ACIUATERM$zco)

W*ter and Wastewater

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ACIUATErtMffi$mmt ffiqu$prnm*t & Mmtmrimll* f*rkVmt*r & kVm,*t*wm*mr'Yx'xm*nn*mt

VisionTo b* one> of ?he rvcrld's to6: engineering mnd

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which emphoses to protectgreen environmenlfrom domoges,

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MissionAquaterm believes in and is committed to

the fundamental philosophy and principle that

the only guarantee for a sustainable and

successful presence in today's competitive

ma*eting is customer satisfaction. Achieving

of Max. customer satisfaction by accelerating

in establish and supply qualified and

requirement goods for industrial and nmnicipal

water and wastewater treatments completely,

in the global market.

Our secondary mission is going to have a deal

and cooperation with world's great and famous

waler and wastewater engineering companies

as their legal indicator by taking advantage of

world's up-date knowledge according to

consulting, repairing, designing and supplying

water and wastewater treatments equipments.

Consequently, personnel, the quality of supply

have allowed us to go beyond the boarders of

our country and become one of the best

companies on the global market.

AQUATERM(rzco)

www.aa{u{}?*rrn.ee

AQUATERM

Aquaterm has been founded in Jebel Ali Free Zone @ubai UAE). It has over

30 years of experience with backing of other companies in the world in utilizing

effective management methods, organizing integrated specialized project

execution teams and employing state-of-the-art technologies.Aquaterm is a company that specialized in the treatment process design and

supply of equipment and plants for water and wastewater treatment by taking

advantages of knowledgeable and skillful personnel in the engineering depar&nent

to perform as a total solution compary. In this matter, it has beea successful

to have deals with other companies worldwide for serving and supplying

engineering, consulting and designing services in field of water and wastewater

treatment plants, completely.

Aquaterm is oommitted to minimizing the damages to the life environment

and committed to security of the employees among the principles of the

compaly.

Territory of Activities

Aquaterm is a company which its vast fields

of activities include supplying and designing

of water and wastewater treatment plants and

equipments for customer requirements in the

global market. So, we attend to supply our

customer requests and also to be contractor in

corporation and joint venture with other big

and famous Europian companies even beyond

the borders.

Afghanistan

Bahrain

Pakistan

Iran

Iraq

Qatqr

U.A.E

Lebanon

Syria

Algeria

Kenya

Armenia

Azerbaij an

Tajikistan

UzbekistanTurkmenistan

tr'ield of Activities

trngineering

According to Aquaterm's long and admirable

experience in field of designing of treatment

process of industrial and hygienic wastewater.

(physical, chemical, aerobic and anaerobic

biological),general designing of needed

equipments of water and wastewater treatment

plants (mechanical, electrical) and designing

and supplying the executing plans ofconstruction and foundation of water and

wastewater treatment plants

Aquaterm's engineering department is

organized by 30 experl engineers in mechanic,

electric and civil who are able to design

compact treatment plant and other plants

equipment that are needs in several divisions.

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Installing

Aquaterm can support its customers in

installatioa part, even it had not made the

compact treatment plants, totally.

Commissioning

Aquaterm is able to support its customer in

field of commissioning by supporting of

expertise personnel, special in Process field;

and also it can offer to its customer suitable

services such as starling, leader and controller

of treatments as you need.

Aquaterm as a supplier can support its customer

in fields of equipments and plans designing

even in the small water and wastewater

treaimenls, engineering, installation and

commissioning.

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ServicesEngineeringInstallationCommissioningSupptyCompact Treatment Plants

Prefabricated Wastewater Treatment Plants/MBBR Process

Prefabricated Wastewater Treatment Plants/MBR Process

Fur:rps

Screw Pumps

Submersible Pumps

Airlift Pumps

Sluice Gates &WeirsOn / Off gates (3-sided rubber seal gates-Sluice gates):

On / Offand control gates (4-sided rubber seal gates):

Adjustable Weirs

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Screw Screens

Curved Screens

Bar Screens

Screw Compactors and Conveyors

Sand and Grit RemovalSand Classifier

Grit Chambers

Prfi trsetment {lornhine UnitsDissolved Air Flotation (DAF)Bioligical keatment

Air Diffuser

Packing/ Moving

High Speed Surface Aerator

Seitling anri Sludgs Removal

Rotating Bridge Srapers

SBR Decanters

Sludge DewateringOdor removal

&xecutionMunicipal and Induskial Water Treatmen Plants

Municipal and Industrial Wastewater Treatmen Plants

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Prefabricated wastewater Tre*trnentPlantslkIBBR Process

In order to improve ee quality of heatrnenq

increasing the treatment capacity and also

being a total solution and environment

protector company in the world, Aquaterm

in corporation with a grcat German-based

company, EYU, that is farnous in the global

market, present their aew products.

Aquaterm according to type of sewage flow,

required treatment proeess type and

environmental conditions, has developed

prefabricated treatment packages utilizing

Moving Bed Biologicai Reactor (MBBR)

methods for sewage biological freatnent which

incorporate the bost technologies in portable

keabnent systems.

Treatrnent process in Aquaterm MBBR

prefabricated plants includes screening,

anaerobic aud aerobic treatment, Lamella

sedimentatiog sludge holding tank and efiiluent

disinfection. MBBR profabricated systems are

completely assembled and ready to run,

Whea eolonios of miuoorganisms grow

on surfaces of moving partsn they are called

Bio-fih. In MBBR technolory, the Bio-film

grow, in the protected way, on engineered

plastic packing wi*r high internal surfrce aroa

also referred as Bio-earriers, which are &eely

*xpended" thororyh mixed thorough the liquid

phase and in csntinuous movement wi&in the

reactor of speeified volume, degrade the

pollutants.

These pollutants that need to be removed

in order to &at the westewater are food fsr

growth of the Bio-Iilm. Thetefore, thc Bio-

carrier design is critic&l due ts requirements

for suffieient ransfer of food and oxygen to

the microorganisms. Excess Bio'film also

sloughs off the Bio-carrier in a natural way.

The Bio-carriers are usually made of high

density polyethylene and have specific gravity

somehow alike wastewater.

Engineered design of aeration systems of

the reactor supplies oxygen to the Bio-film

along with the mixing energyrequiredto keep

the Bio-carriers suspended and completely

mixed within the reactor.

Aerated water flows from reactor thorough a

gnd or a sieve, which retains the Bio-caffiers

in the reactor. In order to remove the sloughed

off biomass from the aerated wastewater,

sedimentation is employed after the aeration

tank. Further treafnent steps are just the same

as conventional trsatment processes.

As it is seen, this technology takes advantage

of both activated sludge process and

conventional fixed film systems without their

disadvantages. MBBR reactors can be operated

at very high load and the treaknent process is

insensitive to load variations and other

disturbances.

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Application

r Hospitals

: Hotel and Resofis

r Military Camps

r Construction Camps

r Athletic Camps

r Food Processing Plants

r Airports and Terminals

r Prisons

AQ-MB6

AQ-MB7

AQ.MB8

AQ-MB9

AOMBI2

100

MainAdvantages

r Shorr time manufacturing

r Compact & beauty design

r Small foot printr Simplicity of installation and operationr Low capital and operating costs

r Reusable treated effluent for irrigationr According to environmental standards

r No need to constructionr Quick installation

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500-650

125 650-800

150 800-900

200 w-1200

6 2.5

7 2.5

I 2.5

I 2.5

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2.1

2i11

11

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Prefabricated wastewater TreatmentPIants/MBR Process

Aquatenn is a company that insists to use ofup-date technology worldwide for supplying

its customer in the global market; according

to achievo this regard, it is dealing with a

famous and experienced company in the

world,Toray on fild of chEmical manufacturiag

and related products, specially carbon fiber

and its composites, plasticso fine chemical and

innovative water treatment technologies.

and also, Aquaterm could able to increase

plants capacity by using of this technology.

The "MEMBRAY" submerged flat sheet

membrane module, when used as a eomponent

of a mcmbrane bioreaotor (MBR) system,

effectively removes suspended solids. This

innovative microfiltration module in a plate-

and-frame configuration with flat sheet

membranes was developed.

The "MEMBRAY" module configuration

comprises an element block and an aeration

block. The element contains a number ofmeurbrane elements stacked at equal intervals,

each of which has flat sheet membranes

attached on both sides of a supporting panel.

Each element connected via a tube to apermeatod water manifold. The aeratioa block

consists ofair diffusers used to supply air.

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Applic*ti*n

Refer to MBBRMethod

Main Advantages

MBR technology enhances waste water

treatrnent efficiency:

l. Using membranes to separate sludge ensures

muchhigher quality for keatedwater free &om

suspended solids. Combination with RO

membranes allows producing water quality

asa good as potable water.

2. Membrane can retain activated sludge at

high concentration, allowing BOD as well as

nitrogen to be removed more efficiently.

3. Unique membrane configuration having an

immense number of minuscule pores delivers

stable high clogging and higher permeated

water quality.

Smaller footprint:

1. The module can be submerged directly in

an activated sludge tank for combining

biological ffeatment and mernbrane separation.

It eliminates the sedimentation or sludge

concentration process.

2. More effective biological treatrnent allows

activated sludge tank size to be reduced.

Fewer chemical cleaning requirements and

coarse screen pretreaknent:

1. The plate-and-frame configuratioa that

employs flat sheet membranes is inherently

stronger against fouling than the hollow fiber

membrane coafiguration. Therefore, it results

in fewer chemical cleaning requirements.

2. Reduced module fouling &om human hair

and o&er obskuctive substances allow coarse

screening as pretreatment process.

' Energy efficient:

1. "MEMBRAY" consumers less energy

compared to hollow fiber membrane due to

motor effective scouring aeration and lower

trans-mernbrane pressure.

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Pemeated WaterMonifold

Element Block

Aeration Block

Air Diffuser

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AQ-MBRS

AQ-MBRlo

AQ-MBR12

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800-lmO

1000-1300

1300-1700

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Wiidth{m}

2.5

?.5

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2.7

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150

200

250

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Screw Pumps Archimedean

The Archimedean screw pumps are suitablefor 1ifting watel wastewater and sludge byhighcapacities up to fixed heads. Large passages

and the open screw make it possible to haadle

solids laden liquids without the danger of ablockage.The Archimedean Screw pumps can be

supplied in two different versions to be installed

in a concrete trough and steel trough.The standard construction is in carbon steelprotected by hot dip galvanization. On request

it is possible to produce metal parts in stainless

stee1.

Applicationr The Archimedean Screw pumps are applicable

in water, wastewater an industrial process, itcaa lifl water even containing solid particels

in suspensionr Domestic sewage

: Return sludger Rainwater and flood waterr Land drainage

r lrrigationr Paper and pulp industryr Different kinds of industrial wastewaterr Handling of industrial liquids.

DOH350400 (rnm) 70-1s000 (m3&) 3.5-7 (mm)

The table is just primery dq{q, furlrnore inforyation please cortact us.

Main advantagesr High performance with 1ow powerrequirement

r Screening atthe intake is notnecessary, thereby

eliminating problems deriving from thisoperation

r The Archemidean screw pump are easy toinstallation and not require special maintenance

even aftercontinuous use andlor after using with certain

types of liquids

: Very durable

r High operational safety and reliability

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5-t4 (m) 2.2-400 (hry)

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Submsrsible Pumps

A submersible pump (or electric submersiblepump (ESP)) is a device which has a close-coupled to the pump body. The whole assembly

is submerged in the fluid to be pumped. Themain advantage of this type of pump is that itprevents . Submersible pumps push fluid tothe surface as opposed to jet pumps having topull fluids. The submersible pumps used inESP installations are multistage centrifigalpumps operating in a vertical position.

Main Advantagesr The main advantage of this type of pump isthat it prevents .

r Hihg-efficiency hydraulic design

r Available as standard or higher specificationr Automatic seal and temperature orritoring: Available as explosion-proofr Designed for fixed or ttransporlable installation

Applicationr Submersible motor pump are applicable forwater supply &om boreholes, wells and cistems,prinkling and irrigation.

r Single stage pumps are used for drainage,sewage pumping, general industrial pumpingand slurry pumping

r 11 is used for , and in .

* ESP's commonly used on board naval vessels

cannot be used to dewater contaminatedflooded spaces

n It caa also be used out of the water, takingsuction with a 2-112 inchnon-collapsible hose

r The pumped liquid is circulated around the

motor for cooling purposes

Rate 10-8000 m3lh 6-100 m

The table is just primery data, for more information please contact us.

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Air Lift Pumps

The air lift pump is generally apply for liftingof water and sludge or water-sands. When the

air enters the pump, it may form a water columnthat tends to go upwards. The air-lift unitconsists of an intake orifice, a lifting pipe withcut-off valve, an air-lift valve and a pipingsystem for the delivery ofextraction air and

washing water.

MainAdvantagesr Economic costsr Ease of maintenancer Ease of operationr No mechanical moving part: High pumping capacityr Absence of any mechanical moving part incontact with the fluid to be lifted

Air Inlet

50-250 (mm) 10-180 (m3&) 50-4500 (mm)

The table is just primery data, for more information please contact us.

ApplicationAquaterm's air lifts can be used in differentunits of keatment plants such as grit chamber.

Inlet

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Sluice Gates &Weirs

Aquatenn Designes and supplys different types

of gates preventing, allowing and coatrollingthe liquid stream in concrete channels andpipes. These gates can be classified as foliows:

1. Slice Gates (On I Off and control gates)

2. weir gates

I. Sluice Gates (On / Off and eontrol gates)

?he Ol i Offand control gate is a componentthat prevents, allows and also controls the

liquid stream in concrete channels and pipes.

On / Offand control gates are divided into twogroups from the view point of sealing type: 3

sided rubber seal gates and 4 sided rubber seal

gates (Penstocks)

1.1- OnlOIf gstes (3 rlded rubber sed gates-

$Iuiee gater)

3 sided rubber seal gates are often utilized inopen channels

3 sided rubber seal gates may be divided intotwo groups due to application type: I slop loggales,2 sluice gates. Stop log gates areutilizedin na:row channels in order to cut offthe liquidstream. Sluice gates also allow and control the

liquid stream besides it's cutting off.

A sluice gate is a vertically sliding valve, bymeans of which the liquid can be prevented,

allowed or controlled in open channelsSluice gates, depending on channel width, are

traveled by one of the following mechanisms:

: Hand wheelr Bevel gear box( single-shaft, two-shaft)r Electric gearbox

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1.2- On/Off and control gates{4 sided mbberseal gates)

4 sided rubber seal gates (Penstocks) areinstalled at the end of pipe lines and ducts, so

as to cat off the liquid stream. The penstockgate consists of cover, frame and stem.Cover is a ductile disk and frame is a ductilering. The frame is installed at the end pipeopening or channel outlet and cover isconnected to the stem. As the stem is tuirred,a ball bearing and a cast bronze thrust nutthreaded to match the stem threads, cover slipsover the frame. Contact surface of frame and

cover is properly finished and this eliminatesthe leakage through the gate.

Penstock gates, depending on duct dimensionsare traveled by one of the followingmechanisms:

r Hand wheelr Bevel gear box( single-shaft, two-shaft)r Electric gearbox

ApplicationThey are installed at the end of pipe lines and

ducts in different units of treatment plants suchas distribution chambers, pump stations, ... Inorder to prevent or allow the liquid stream.

2. Adjustable WeirsRectangular type weir gates are installed intanks outlet and channel openings in order toadjust the liquid level.

r For installing in aeration tank exit weirr For installing in devider of treatments

ApplicationThey are installed at grit chambers, aeratioatanks, chlorination tanks inlet and outlet, openchannels in order to allow, prevent and controlthe liquid flow.

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Gate Dimensions

widrhw

300-1000 (mm)

Gate height

H

500-1000 (mm)

Material

HotDip Galvanized/Stainless Steel

off 1? llul

The table is just primery data, for more information please contact us.

$*re*:*ing

The first unit operation generally encountered

in wastewater-treatment plants is screening

that is used to retain solids, both fine and

coarse, found in the influent wastewater to the

treatment plant that could damage subsequent

process equipment and/or reduce overall

treatment process reliability and effectiveness.

Aquaterm is able to offer both manual and

mechanical bar screens which are widely

utilized frequently in municipal and industrial

wastewater treatment plants.

Aquaterm mechanical screens are divided into

three categories due to their cleaning

mechanisms:

Serelv [{creems

Screw screens for the separation of solids/

liquids; there are two types of screens, one type

is completely vertical while the other one has

been bent a little.

Main Advantages

Sereen frame available with drilling of 6 mm

(10 mm special).

The machine is self-cleaning, thanks tc the

brushes fitted on the screw conveyor.

The screw conveyor with fixed internal shaft

makes it possible to lift materials of differett

sizes and shapes, which are, however, difficult

to kansport, preventing bacldlow to the troading

area.

The wide range available makes it possible

to choose the right version to suit the

application requirements.

The stainless steel structure along with brushes

made of enable plastic material the use of the

machine for handling acids, basic products.

Entire operation of the machine is handled by

the drive units.

Installation is easy and rapid.

Maintenance operations, if necessary, are very

simple.

Application

A combined machine for screening of effluents,

aimed at separating the solid particles from

the liquid, and compacting and dewatering of

the solids extracted.

Range of Screw $creenry$srs* Piamste{,,1,@q,.}!1i{1[

DWScrewLeng&, IowersWply

Lkw3000-6500mm 1.14

*Iead

H

200-1100 mm 450-1500 mm 2000-2700mm

The table is just primery data, for more information please contact us.

Page 20E

Curvcd Srreens

Curved screens are fully automatic. They are

conholled by a head loss sensor or a timer, but

&ey may also be activated manually. If the

waterlevel inthe curved screenupsteam, rises

above a fixed maxirmrm level due to sudden

clogging of the screen, &e level sensor willactivate the electomotor gearbox, pulling &e

rake which was originally in a hcrizontal

position to allow the screen to be cleaned aad

the water to flow *eely again.

Main Advantages

Simplified design

Compact shape

Quick setting-up

No need to civilEasy to operate

works for installation

Available for concrete or steel prefabricated

channels

Application

Curved screens can be installed in open

chanaels, as primary treatment unit in all

municipal aad industrial wastewater keatnent

plants and is adapted to any flow rate.

Filt*tion

Gap d(mm)

15-45

{$*ffit;l**

, CurvedScrecnDimensions

Widtlt

W(mm)

500-2000

Range of Curved Screen

$eight , Max.Len*t Screeirl,englh 'RrkeRadius

H(mm) L{mm) Ll(mm) R(mm)

500-2500 1000-4000 600-2500 800-2800

The table is just primery data, for more information please cottact us.

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Bar screens consist of a fixed vertical frame,

a cleaning rake and a rake cleaning device

which are all fubricated &om coated structural

or stainless steel members, a screening filter

fabricated from parallel steel belts or rods and

a hydraulic power pack with a double acting

cylinder that can handle the bi-directional

control ofthe cleaning rake. These screens are

also equipped with timer or level meters which

activate or stop the rake.

Main Advantages

Totally pre-assembled

Minimum floor space requirement

Easily installed in existing open channels

No limit on height of solid waste discharge

Economical

Simplicity of operation

Minimum maintenance requirement

Application

Bar screens are installed in open channels as

primary lreatmenl unit in all municipal and

industrial waslewater keatment plants. These

screens are mostly used in places with high

screening height.

Chanel Width

w50-2000 mm

Range of Bar Screen

Cha*el Hight Discharge Hight

HH150-3000 mm 100-3100mm

Filtering Gap

F

10-50mm

Power Supply

kw

0.25-L.l

The table is just primery data, for more information please contact us,

Page 22

Screrv Cornpactors with shaftless serew

{spiral}

Screenings compactors can be used to dewater

and reduce the volume of screenings. Suchdevices, including hydraulic ram and screwcompactors, receive screenings directly fromthe bar screens and are capable oftransportingthe compacted screenings to a receiving hopper.

Compactors can reduce the water content ofthe screenings by up to 50 percent and thevolume by up to 75 percent

ApplicationThe combined presence in the area of a suitablyperforated screen (slots) and diaphragm pressor

with variable compression made of SINT@causes compacting- dehydration of the materialconveyed:Screened material with high content of sand

and/ or similar products ;

The compacting area is equipped with a system

using pressurized water jets for continuouscleaning ol the screen

MainAdvantagesLow volume by compacting rubbishesEconomicalEasy to transport

Range of Screw Ccmpactors

Scrsw Diameter

D

20-350 mm

lvidrh

W

50*700 mm

Screw Length

L

2000-3000mm

Power Supply

kw

1.1-4

The table is just primery daia, for more information please contact us

Fage 23

Sand nnd Grit Removal

In order to achieve an efficient grit removal,

Aquaterm provides the grit chambers with

traveling bridges. Aquaterm Mechanical

traveling bridge on two bogies kavels slowly

back and forth on the grit chamber concrete

walls after a pre-set time. These bridges are

equipped with a bottom sand scraper and a

surface scum skimmer. During its forward

motion, collects the scum and oily floating

materials using its scum skimmer and conducts

it to scum box which is located by the grit

chamber wall.

The suitable materials are contact parts in 304

stainless steel except screw in carbon steel

plus lining.

Aquatenn mechanical sand removal is dividsd

into two categories due to their cleaning

mechanisms:

r Sand Classifierr Grit Chambers

l}-****r

Fage 24

Sand Classifier

Machine is suitable to remove sand from

various types of effluent aad to wash out

organic matter.

Main Advantages

r Place the trough on the ground and fix it stably

to prevent it from tippiag over.

rUnpackthe hopper componenB and lay them

out for assembly.

r Apply the gasket supplied and the silicone

seal in the coupling flaages betr*reen the various

hcpper elements;

: Fit the hopp"r, starting from the rear or one

of the side walls;

r Complete the hopper assembly;

r Position and fx the separation plate inside

the hopper;

: Fix the rubber sheath to the outlet container

using the clamp supplied;

r Fit the outlet container on the separation plate

inside the frough;

r Fit the vent on the relative perforated cover;

r Fit the hopper covers;

r Assemble the support foot if this has been

dismantled for transport.

Application

rMunicipal effluents

r lndustrial effluents

r Sludge

Rsnse of Sand Classilier_ :_--*, : "..

Scrow Diameter Max.Width Ma:r.Lenght Max,Flow Rate Power Supply

DWHa20-60mm 1100-2100mm 4000-7000mm 40-60m3

The table is just primery data, for more information please contact us.

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Grit Chambers

The next step aftere screening is to removesmaller objects (such as sand, broken glass,

silt and pebbles). If these objects are notremoved, they can damage pumps and othermechanical devices.

These objects also have a tendency to settle incorners and bends, thus reducing flow capacityand eventually clogging pipes and channels.Grit chambers are concretelined rectangularponds, where the wastewater enters one endand leaves at the opposite end. These charnbers

are typically sized sothat the speed of thewastewater flowing through the chamber iskept slow enough to allow sand particles tosettle out of the wastewater.Up to this velocity the majority of grits willfall out of solution and be collected in a bottomdump pitin the channel. These channels arelong, narrow, relatively deep and aerated withcoarse bubble diffirsers.

Main Advantagesr Efficient separation of liquid and solid phases: Low energy consumption: Economic designr Low maintenance costsr Easy to installation

ApplicationAquaterms traveling bridges are widely utilizedin sand and scum (grease) removal units in bothmunicipal and industrial wastewater treatmenlplants.

. ,uridth 'leng$h ,'dspth,,

Dlm' $r{rlx} 'L{m} ,:,H&i}

2-6 7.5-25 r.25-5

v{*l} qp(mr/hr} *ftftu} ;x*i,qin) Gtlfffft'd

t.25-5 2387s 60-7000 328-1225A 118-4410

The table is just primery data, for more information please contact us.

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Pretreatment Combine

Combiaed lVlechanical Pretreatment units.

MainAdvantagess Screen fizme available with drillings or wedge

openiags in various sizes.

e The machine is self-cleaning, thanks to lhe

brushes fitted on the screw conveyor.

w The shaftless screw conveyor allows liftingof materials of different shapes and difficultto transport.

e The wide range available makes it possible

to choose the right version to suit the

application requirements.

* The staialess steel structure along with brushes

made of plastic material enable the use of the

machine forhandliag acids, basic products and

foodstuffs.

* Entire operation of the machine is handled bythe drive units.

e Installation is easy and rapid.

e Maintenance operations, if necessary, are verysimple.

ApplicationA combined machine for screening of effluents,

aimed at separating the solid particles fromthe liquid, and compacting and dewatering ofthe solids extracted.

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Dissolved*Air Flotator (DAF) I

Aquaterm as a supplier company and forachieving customer satisfaction, is attended tosupply equipments of customer requirements;

in order to gain this regard, Aquaterm has a

corporation wih a Biritain-based compaay,

Processus that has patent for its supplies

that coaclusion:

r Reduce space requirements

r Saves operation and maintenance costs

: Improves puriflcation results

r Suitable for any kiad of water

Ia Dissolved Air Flotation(DAF) system, air is

dissolved in the Liquid under a pressur ofseveral atmospheres, followed by release ofthe pressure to the atnrosphere level. In smallpressure systems, the enlire flow may bepressurized by means of a pump to 275 to 350

KPa with compressed air added at the pumpsuction.

The entire flow is held in aretentiontankunderpressure for several minutes to allow time forthe air to dissolve. It is then admitted through

a pressure-reducing valve to the floatationtank where the air comes out of solution invery fine bubbles.

HYDRAULIC FLOCCU I.ATION

MainAdvantagesr Applicable to upgrading and retrofiffing inexisting plants or new builds

r Well proven technologyr suitable for potable water and tertiary sewage

treatmentr Low capital costr Mininrum plant footprintr Low operating costs

r Plants can be designed in steel or concrete

Applieafion

Removal of suspended solids such as oil orsolids.

Sludge concentration.

PATENTED

HE.FLOTATION OUTFLOW

DRAINAGE

D'STRIBUTION

RATA'WATEB DISSOLVED AIB

AAUATEFrTOGETHER FOR A GREEN WORLD

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Biological Treatment

Biological waste treatment involves bringing

the active microbial growth in contact withwastewater so that they can consume the

impurities as food. A great variety of micro

organisms come into play that include bacteia,protozoa, algae, etc.

These organisms in the presence of oxygen

convert the biodegradable organics into carbon

dioxide, water and other inert products.

Moreover, because of low solubility of oxygen

and the consequent 1ow rate ofoxygen transfer,

suffrcient oxygen to meet the requirements ofaerobic waste treatment does not enler water

through normal surface air-water interfaces.

Therefore, to transfer the large quantities ofoxygen that are needed for microorganisms,

additional interfaces must be formed. Either

air or oxygen can be introduced into the liquid

which is called diffused-air systems, or the

liquid in the form of droplets can be exposed

to the atmosphere which is known as

mechanical aeration.

r Air Diffuserx Packing Media

x High Speed Surface Aerator

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Air Diffuser

An air diffuser or membrane diffuser is adevice typically in the shape of a disc, tube orplate, which is used to transfer air and withthat oxygen into sewage or industrialwastewater. Oxygen is required bymicroorganisms/bacteria residents in the water

to break down the pollutants.

And also, diffusers are generally referred to

as eilher Fine Bubble I Fine Pore and Coarse

Bubble.Fine bubble diffusers are a technology used

to aerate wastewater for sewage treatment.

They produce a plethora of very small airbubbles which rise slowly from the floor of awastewater featrneat plant or sewage featment

plant aeration tank and provide substantial and

effrcient mass transfer of oxygen to the water.

The oxygen, combined with the food source,

allows the bacteria to produce enzymes which

help break down the waste so that it caa settle

in the secondary clarifiers or be filtered bymembranes. Coarse bubble diffusers are a

technology used to aerate and or mixwastewater for sewage treatment.

They produce l14 to ll2 inch bubbles whichrise rapidly from the floor of a wastewater

treatment plant or sewage treatment plant tank.

They are typically used in grit chambers,

equalization basins, chlorine contact tanks,

and sometimes also in aeration tanks.Coarse bubble diffirsers typically provide halfthe mass transfer of oxygen as compared to

fine bubble diffiisers, given the same air volum.

Often in non-newtoaian/pseudoplastic fluids,

such as a digester with high solidsconcentration, it does make sense to use coarse

bubble diffusers rather than fine bubblediffusers, due to the larger bubbles' abiliry toshear through more viscous wastewater.

MainAdvantages; High oxygen transfer efficiency and lowsystem headloss to low energy costs

r Minimal maintenance is requiredr Homogenueous distribution through all the

microholes

r Perfect clogging-proof of the membrane

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Packing Media (Moving Bed)

The Packing Medias usually apply for

biological treatment. In general they can be

used in continiuos flow process and in SBR-

process for partial biological purification, basic

purification with and without sludge

stabilization as well as simultaneous

nitrification / dentrification and biological P-

elimination and demonstrate their value.

Application

The Packing Medias whichAquaterm uses in

the wastewater treatment plants are excellent

for BOD/COD removal and nitrification Identrification in different types of waste water.

rPrifabricated wastewater treatment plants.

rSludge treatment plants ready for use for

municipal waste water (continuous {low and

SBR-plants)

rlmprove efficiency and refitting of exisiting

plants in aay conneclion size

rDelivery of biofilm carriers for biological

processes

r Sludge plaats for indushy

Main Advantages

rMaximum surface and variable density

rExkeme durability

rNo clogging * optimum and stable biofi1m

formation

r Simultaneous nilrification I denitrifi cation by

special carrier figuration

rStrong price performance ratio

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Fligh Speed Surfaee Aer*t$r

Aerators are uiilized in order to supplysufficient oxygen for the organic digestermicroorganisms' breathing, growth andreproduction aad also wastewater completemixing in aeration and equalization tanks, and

aerobic digesters.

Considering the role of aeration unit as themost important stage of a treatment plant,acceding the high performance aerators willbecome necessary. In order to achieve this,Aquaterm. has applied the latest technicalknowledge to supply high performance highspeed aerators.

Operation Mechanism:Aquaterm high speed surface aerator (Aquaair) fuactions as an open pump. It is a highspeed surface aerator which sucks the wastefrom the tank roof axiaily through thecylindrical pump house, bends the liquid flowfrom axial to radial direction and distributesit over the water surface. This ensures thatmaximum kinetic energy is transferred to the

water surface.

Aqua air aerator is fitted with a reflector/impeller group that enables it to obtain a veryhigh mixing and oxygen transfer rate. Thisgroup is directly mounted on the stainless steel

motor shaft avoiding the use of couplings thatcause increases in maintenance costs.

Aerator assemblyMajor components of Aquaair aerators are:

Electromotor: Electromolor is protected toclass F insulation IP 55 standard for all weatheroperations. It is totally enclosed and fan-cooled.

Since these electro motors need high power,

the highest qualrty European suppliers such as

SIEMENS, ABB... will be utilized in Aquaair aerators. It should be noted that Aqua airaerators don't need gearboxes.

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Reflector: In order to direct and distribute the

wastewater over the water surface propedyand increase the wastewater radial spreading,

a reflector with a compatible design is applied.

The reflector is manufactured from a specialmaterial so that it minimizes the erosion to its

minimum level.Shaft and impeller: Shaft and impeller are

fabricated il stainless steel and can be simplyinstalled or removed .both shaft and impellershould pass after-production dynamic tests

before installation. In case eccentricities and

therefore vibrations are observed shaft andimpeller shall be balanced before the aeratorassembling.Float: The float is manufactured in stainlesssteel filled with polyurethane foam, and isstudied for all weather conditions. A1l aerators

connection bolts are in stainless steel.Flow director: In order to direct wastes intothe pump housing and then lead it to the watersurface, a flow director which is supported byfloat, fabricated in epoxy coated structuralsteel and equipped with anti-vortex plates, is

applied.

Main AdvantagesHigh oxygen transfer rate efficiencyHigh basin mixing efficiencyLow investrnent costs for complete installation

Simple and quick insiallation

ApplicationAqua air aerators are utilized in differentbiological wastewater treatment systems and

other units of treatment plants such as

equalization tanks, aerated lagoons, aerobic

sludge digesters sludge reservoir tanks and

sequencing batch reactors (SBR).

Aqua air aerators have been widely used insanitary and industrial wastewater treatmentplants all over the country.

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Settling *nd Scrapers

Sedimentation is the quiescent detention ofwastewater ia specially designed settling tanks

to remove settleable and floating solids. Settling

tanks remove solids from liquid bysedimentation and flotation, and thicken solids

for removal and subsequent processing. Settling

tanks are typically either circular or rectangular.

Selecting a particular type for use in a treatment

facility depends on a number of factors,

including the size of the plant, local site

conditions, existing primary treatmentequipment, judgment of the engineer, and

economics of conslruction and operation.

*Rotating Scrapers

a SBR Decanters

* Sludge thickeners

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Rotating Bridge

Aquaterm supplies rotating bridge scrapers withall needed accessories for circular sedimentation

tanks.

Circular settling tanks normally have a center

feed well with raw wastewater traveling fromthe center inlet loward the outer wall and

discharging over peripheral over flow weirs into

the effluent collection trough. Settled sludge is

fansported 1o a center collection sump by means

of rotating scraper arms (bridges) moving across

the tank floor. A surface skimmer mechanism is

also attached to the sludge scraper arm (bridge)

and rotates around the tank water surface and

conveys floaiing material to a collection box.

Main Advantages

* Efficient separation of liquid and solid phases

+ Low energy consumption

s Economic design

s Low maintenance costs

* Easy to installation

+ long life

Application

Aquaterm rotary bridge scrapers are mainlyutilized in primary and secondary sedimentation

units ia both municipal and industrial wastewater

treatment plants. They are suitable for dealing

with primary sludge, activated sludge and a

variety of settlement application associated withprocess liquors and trade effluents.

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D(m) H(m) P(m) S(m')

4-50 3-4 12.5-157 12-1963

Range of Rotating Bridge

vrm3) Qrr(m3/hr)Primary Secondary

38-7854 15-3500 8-3000

RBC Pri. SEC. RBC

fi-270A s2-6300 15-3900 66-4850

The table is just primery data, for more lnformation please contact us.

Page37 ffiffi:

SBR Decanters

One of the new ffeatnent method is Sequencing

Barch Reactor. In this method, all the biologicalreactions aad sedimentation will happen in the

same tank. According to types of SBR they

will design.

SBR process utilizes a filland-&aw reactor

wi& complete mixing during the batch reaction

step and where the subsequeat steps of aeration

and clarification occur in the same tank. AllSBR systems have 5 steps in common whichare carried out in sequence as follows:

1- Fill

2- React (aeration)

3-Settle (sedimentationiclarification)

4- Draw (decant)

5- Idle

For conlinouse-flow applications, at least 2

SBR tanks must be provided to that one tankreceives {low while the other completes itstreatment cycle. Several Process modificationhave been made in the times associated witheach step to achieve nikogen and phosphorus

removal.

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Major components of Aquadecanters are:

1. Inlet pipe, designed as a horizontallyarranged pipe construction with speciallyformed inlet slots. Morever, this pipe isequipped with a special bafIle, which prevents

&at floating sludge or other swimming material

is entering the decanter.

2. Yerticalpipe, which connects the inlet pipe

with the joint.

3. Stainless steel joint (twistiag link),completely sealed and watertight and equipped

with two connection pipes for inlet and outlet.

4. Level switch, which is located at a special

fastening construction. This construction allows

the adjustment of the level switch in a range

of 0-1.5 m.

5. Eiectrical winch, which is located at the

tank wall. This winch is equipped with a brake-

motor as well as with four limit switches. Byuse of a stainless steel rope, the decantingconstruction can be moved upwards ordownwards accordiag to the process. Uponrequest.

MainAdvantages

e Compact facility

s Flexible operation

w Applicable for a

m Low efflueat (SS)

Applicatiou

e Aeraiion steps

s Aerobic digester

variety of plant size

* For separation lighter fluid

Page39 >ffi

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$ludge Dewatering

Dewatering is a Physical unit operation usedto reduce the moisture content of sludge andbiosolids Dewatered sludge and biosolids are

generally easier to handle than thickened orliquid sludge.

Several techniques are used in dewateringdevices for removing moisture. Some of these

techniques rely on tatural evaporation andpercolation to dewater the solids. ln mechanical

dewateriag devices, mechanically assistedphysical means are used to dewater the sludge

more quickly. The physical means includefiltratioa, squeezingo capillary action andcentrifugal separation and compaction.The selection of the dewatering device is

determined by the type of sludge to bedewatered, characteristics of the dewateredproduct and the space available.

Belt-Filter Press

Belt-Filter Presses are continuous-feeddewatering devices that use the principles ofchemical conditioning, gravity drainage and

mechanically applied pressure to dewatersludge. It is a continuously operating machine,

in which the sludge is carried between twosieve belts along 12 (up to 14) press ro1lers.

The diameter of the press rollers is reducedconstantly which results in an increasingpressure.

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Main Advantagesr Modern high-capacity belt-fi1ter presses insturdy frame and open cons8uction completely

enclosed

r Large gravity thickening area fo predewatering

r High pressue zoae includes 12 (or 10) press

rollers

r High dewatering performaace due to an

coavenient arrangement of the rollers and highpressingpower of 8-10 bar

r Low costs for operation and maintenance

r Wash water consumption can be substituded

by filtrate

Applicationr Municipal plants

r Pulp and paper industry

r Leather industry

r Textile processing

r Fruit and vegetable processing

r Drinking water processing

r Steel works and roller mills

r Sugar industry

r Bio-water processing

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*cl*r ltemoval

Aquaterm for supplying ils customer has acooperation with a big and famous Biritish

company, OSIL . It is a* independentservice provider specialising in the field ofodor control for both the water indusiry and

indusirial application. As a tru1y independent

company we are able to advise and specify the

most appropriate solution to your odor controlproblem.

The principal sources of odors in wastewater

management facilities and the relative potential

for release of odor are presented such as

wastewater-collection system, wastewatertreatment facilities headworks (screening, gritremoval,...), sludge and biosolids facilitiesand etc.

Odorous compounds typically contain eithersulfur or nitrogen. In view of the importance

of odors in &e field of wastewater managemen|

the following discussion will deal with:c The types ofodors encountered

x The sources ofodorss The movement of odorous gases

r Strategies for odor controlx Odor control methods

r The design of odor-control facilities

The general classification of odor-treatmentmethods conclusions:

Chemical Methodss Chemical Scrubbing System: The basic design

objective of a chemical scrubber is to providecontact betweea air,water and chemicals (ifused) to provide oxidation or enlrainment ofthe odorous compounds.

Activated Carbon Methodx Adsorption: Activated carbon adsorbers are

used commonly for odor control. The rate

of adsorption for different constituentscompounds being adsorbed. It has also been

found that the removal of odors depends on

the concentration of the hydrocarbons in the

odorous gas.

Biological Methods

u Biofiltration System: Biofilters are aa odortreatment technology that utilizes biologicalprocesses as the treatment mechanism.Biofilters are considered to be a "green"approach to odor conkol, because they utilizemicroorganisms in media to oxidize odor and

air emission compounds to carbon dioxide,water, biomass, and other benign by-products

such as chloride and sulfate. The biologicalactivity in a biofilter is similar to the activitiesperformed by the microorganisms in activated-

sludge secondary wastewater treatmentprocesses.

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QUALITY

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AEI,JATKM[\il

Warehouse RA08 LA01, JebelAli Free ZoneDubai U.A"E P.O.Box:18427

Tel: +971 (0X-SS76006-7Fax: +971(0)4-8876003

aquaterm@eim.aeyyww.aquaterm.ae