B I O G E S TRAINWATER

Rainwater - Management for theenvironment and nature protection

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B I O G E S T

Flow regulators have the task of re-stricting the pass forward flow from the storm water retention system to a preset value.

ALPHEUS® Type ATThe ALPHEUS® Type AT flow control system has been designed for semi- dry or dry installation in the flow control shaft. In this case, the sys-tem operates independently without external energy. In dry weather, the water flows unhindered through the throttle. If the water level rises above a certain level during rain, the float will be activated and starts the pre-cise regulation. An automatic regene-ration system is integrated for block-ages during flow regulation work.

ALPHEUS® Type AS and Type AAThe ALPHEUS® Type AS and Type AA flow control systems have been designed for a wet installation in the flow control shaft. Both systems work by means of a pressure bell housing which regulates the flow quantity using an interior float.

Vortex regulator Type WAB-UCYThe Vortex flow regulator consists of a cyclone like robust stainless steel construction with no moving parts. The water flows tangentially into the throttle. This leads to the formation of an air-filled vortex core. This vortex has a braking effect without physical-ly obstructing the flow opening and therefore guarantees a predefined maximum capacity.

Vortex regulator Type WAB-CE/VThe vertical vortex regulator is a wet installed unit and there is no need of a separate throttle manhole. It con-sists of a vertical vortex body placed on a plug-in board and is particularly suitable for the limitation of rainwater. With a pull rod/bar, the device can be pulled completely up to remove any possible blockages.

Float operated throttle valve Type SWDSThe float operated throttle valve has been designed for a wet installation in the flow control shaft. During rain activity the float will rise with the water level and causes the gate plate to close progressively the throttle opening. By reducing the discharge opening, the SWDS starts its throttling action and keeps the desired flow rate at a maxi-mum water level constant.

Advantagesmechanicalflow regulators

S TÜV-approved vertical Q/H- characteristic (ALPHEUS)

S Automaticoperationwithout anyexternalpower

S Product variations for dry, semi-dryandwetinstallation

S Automatic deblocking (AT, AA)

S High-quality, robust stainless steel construction

S Adapter options: Circular chamber, emergency bypassandemergencyoverflow.

Type AT Type AS Type WAB-UCY

FlowControl

B I O G E S T

Modern management of the sewer system requires reliable flow con trol systems. The increasing require-ments on flow control call for flexib-le control strategies and intelligent, electrical solutions such as remote operation, data transfer and proces-sing to modern media.

ElectricalflowregulatorTypeEGARThe electrical flow regulator type EGAR has been developed precisely for these requirements. A penstock for flow regulation is controlled by an electrical actuator. The water level recorded from a level measurement is directly involved in the calculation of the gate opening by a discharge formula stored in the PLC. The system offers infinitely adjus-table controlled flow amount via an operating device and automatic de-blocking. In the event of backflow, the downstream level is included in the discharge formula and depending on the control strategy, the throttle pen-stock continues to open and keeps the flow rate approximately constant or the penstock closes to protect the sewer system. The system can easily be retrofitted into existing structures, offers a high operation safety and can be connected to remote control and transfer systems.

MIDFlowcontrolTypeSDSThe electrical flow control type SDS has been developed for high require-ments on flow control accuracy. The flow will be registered by magnetic- inductive flow meters (MID) for semi- and fulfilled pipelines. The registered flow rate is compared with the set flow rate by the electronic control penstock. If the actual value devi-ates from the set flow rate, the control penstock is moved to the correspon-ding position.

The system offers infinitely adjustable controlled flow amount via an opera-ting device. Furthermore, the flow control unit has an automatic deblo-cking system. The backflow detection ensures that, depending on the con-trol strategy, the set flow rate is main-tained as far as possible or the con-trol penstock will be closed to protect the sewer system. Together with the remote control connection to a supe-rior system, this flow control system is a modern and intelligent solution, installed into a separate dry throttle shaft.

Advantageselectricalflow control

S Reliableandconstantflow controlwithverticalQ/H- characteristic

S Multiple control strategies programmable

S Infiniteadjustmentoftheflow rate via operation device

S Automatic deblocking system

S Backflowdetectionand integration in control strategy

S Remotecontrolconnection possibility

S Dry,semidryandwetinstallation possiblewithtypeEGAR

S High-quality, robust stainless steel construction

FlowControl

Type EGAR Type SDS

ControlunitEGARinaprotectivecabinet SDSFlowcontrol

B I O G E S T

A storm tank before (left) andafter(right)rinsingwithaflushingsystem.

Easy cleaning of the sole withthevacuumflushingsystem.

In any storm water retention system, sediments in the form of sludge or settled solids will build up over time on the tank floor. Incoming organic material also results in consider able odor nuisance. In order to effec-tively clean up the retention tanks, BIOGEST® has developed flushing systems which can be used with or without electrical energy.

VacuumflushingsystemTypeMFOnce the water level in a tank or a sewer reaches a certain level, a vacuum pump switches on automa-tically and fills the flushing chamber up with water. As soon as the basin or the sewer has been emptied, the sediments remain on the tank floor. Now the flushing process starts auto-matically by filling the tank or sewer with one surge using the water from the flushing chamber. This powerful flushing action means that any depo-sited sediments are carried away and the tank floor is clean again.

Flushing system principleHere the principle of the flushing pro-cess is demonstrated, using vacuum technology. Incoming mixed water is used to fill the flushing chamber up using a vacuum pump. This starts even with a minimal filling of the tank, respectively with each partial filling event. Once the tank or sewer is empty, the flushing sequence starts automatically. A powerful water surge rinses the floor clean, without any moving parts in the tank.

Advantagesflushingsystem withvacuumtechnology

S No moving parts in contact withwastewater(noriskof blockage)

S Efficientcleaningwithawater head of up to 7 m

S Cleaning action using mixed orrainwaterfromthetank

S Suitable for all kind of tank shapes,flexiblesystem

S Minimal maintenance - no man entry required for maintenance

S Optimalflushingresult,even on very long lanes and large circular tanks

S Safety and hygienic advantages .

Type MF

Flushing system

Flushing of a rectangular tank

Flushingofasewersystem

Flushing of a circular tank

B I O G E S T

Flushing gate in a storm tank in action

GateflushingsystemTypeKSAn established method of surge clea-ning is the technology with flushing gates developed by BIOGEST®. In this case, control can either take place electronically or by using float technology. The flushing chamber is filled whenever water is in the tank or sewer. As soon as the tank is empty, the flushing gates will open subse-quently and the flushing wave enters the sewer or tank with a very high sweeping force.

Advantagesflushingsystem withgatestechnology

S Efficientcleaningwithawater head of up to 3 m

S Cleaning action using mixed orrainwaterfromthetank

S Delayed closing of the gate using damping function (optional)

S Excellent locking technology and very fast opening of the gate

S Lowmaintenancerequirement andlowenergyconsumption .

ChannelflushinggateTypeCFStorm water catchment channels create sediments during storm events. If these long channel sec-tions are not cleaned, the potential for blockages is increased and odor nuisance will occur due to septicity. The channel flushing gate is an ideal solution to solve this problem. Once a flushing is required, the gate will be operated electro-hydraulically in low position. The upstream channel water fills the channel behind the plate. Once filled, the gate will be opened and the flushing sequence starts automatically.

Advantagesflushingwith channelflushinggate

S Channelflushinginlargeand long channels

S Periodic channel management andflushing

S Gateisinopenpositionoutof the cross-section

S Robuststainlesssteel construction

S Lowmaintenance

S Sizes from DN 600 - 2000, larger possible .

Type KS

Flushing system

Channelflushinggateinupperposition

Channelflushinggateinlowposition

Flushingofatankwithgates

B I O G E S T

During periods of heavy rainfall, both the water quantity can lead to problems and coarse solids can be difficult to deal with. Hygiene artic-les or other waste at inlet locations to receiving waterways can result in unwanted pollution, which can even be environmentally damaging. Scree-ning equipment or lamella baffles from BIOGEST® can provide a solu-tion.

FloatingscumbaffleTypeSWTWThe floating scum baffle consists of one or multiple balanced floating bodies up to 6000 mm in total length. Due to the specific arrangement of the floating body, floating matters are effectively retained, even at lowest rising water level.

Advantagesfloatingscum baffles

S Effectiveretentionoffloating solidsbyfloatingbaffle

S Idealforlargeandfluctuating waterlevels

S Vertical and radial versions possibl

StormwaterscreenTypeSAS The BIOGEST® storm screen ensures high performance screening during periods of heavy rainfall. The solid re-tention system is installed at overflow weirs and can easy be retrofitted in existing structures. The waste water flows through the perforated screen basket, which is arranged as a semi- circle section. The screen basket is fully automatically cleaned during operation. The system retains floa-ting matter and sediments efficient and protects the environment from pollution.

Advantagesstormwaterscreen

S Ideal solid retention by means oftwo-dimensionalscreening

S Efficientandcontinuous automatic screen cleaning S Forwardingofextracted screening material to WWTP

S Easyretrofittinginexisting overflowstructures

LamellabaffleTypeLTWThe BIOGEST® lamella baffle is fitted upstream of and below an overflow weir and ensures that sediments floating on the water surface are retained. This means that there are no horizontal flows with suction effect on the surface. The system can be retrofitted easily in existing structures and also adapted individually. There is even a solution suitable for circular structures.

Advantageslamellabaffles

S Effectivefloatingretention offloatingsolids

S Operationwithoutexternal energy

S Installation possible through very small access openings

S Circular version available

S Lowmaintenance

Coarse solid retention

Type SAS Type LTW

B I O G E S T

Wastewater sewers always carry coarse solids such as grit, gravel or stones. These sedimentary materials cause damage to machines and mechanical parts which are installed in wastewater treatment facilities. It makes sense to collect the sedi-mentary material automatically and to repeatedly remove it from the sewers. BIOGEST has developed an extremely effective grit trap for this purpose.

GrittrapTypeGESMOThe grit trap is placed in a shaft without any fixed installed parts. The passing heavier particles sink into the grit trap basket. Moreover, the sedimentary material is aerated and circulated due to holes in the bottom of the basket, while sedimentation of suspended solids is prevented. Following the filling degree, the grit trap can be lifted by means of suit-able lifting gear, emptied and then placed back into the shaft. Aeration of the grit trap is not required for surface and road water drainage. Advantages grit trap

S Simple collection and removal of grit

S Simpleandinexpensivefitting

S No technical installations in the grit trap shaft required

S Compact and robust implementation in stainless steel

S Fast emptying even during operation

S Extremelylowmaintenance

Debris retention system

Grit trap Type GESMO

Grittrapincircularversion

Grittrapinrectangularversion

GESMOoperatingintheshaft

GESMOduringemptying

B I O G E S TRAINWATER

BIOGEST® AGSiemensstraße 165232 TaunussteinTelefon: 06128 / 9758 - 0Email: info@biogest.com

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Innovative concepts forenvironmental technology

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