A Presentation On

By:

Vipul Chavda

Cleantech Water

20,4th Floor,

Ratna Business Square

Opp. H.K.College,

Ashram Road, Ahmedabad.

• Contents

• Waste Water Pollutants / Impact

• Type of Treatment for STP

• Typical STP for Residential Complex

• Three rules for Better STP

• Proper Design

• Proper Engineering

• Proper Operation & Maintenance

• Waste Water Pollutants

• Compliance with Law

• Resource Recovery – Water is Precious

• Improved Surface / Ground Water Quality

• Improved Public Health

• Long-term Sustainability

• Why Waste Water Treatment ??

• Pollutants in Sewage

• BOD ( Bio-Logical Oxygen Demand)

• COD (Chemical Oxygen Demand)

• TSS ( Total Suspended Solids )

• pH

• Oil & Grease

• Type of Treatment for STP

• Aerobic Treatment

• Takes Place in the

presence of Air

• Air can be provided by

External Sources

• The Organic Pollutants

are converted in carbon

DI-oxide and Water.

• AnAerobic Treatment

• Takes place in the

absence of Air

• The Organic Pollutants

are converted by

anaerobic organisms to a

gas containing Methane

and Carbon Di-oxide

• Comparison

• Aerobic Treatment

• No Smell around the Area

• Consumes more

electrical energy

• Sludge Production is high

• AnAerobic Treatment

• Smell all around the

plant area

• Energy consumption is

low

• Sludge Production is low

• Different Technologies to Treat Waste Water

• Activated Sludge Process

• Extended Aeration Process

• Submerged Aerated Fixed Film

• Moving Bed Bio Reactor

• Sequential Batch reactor

• Electro Oxidation

• Membrane Bio Reactor

• Rotating Bio Logical Contactor

• Moving Bed Bio Reactor

• In the MBBR bio film technology the bio film grows

protected within engineered plastic carriers, which are

carefully designed with high internal surface area.

• These bio-film carriers are suspended and thoroughly

mixed throughout the water phase.

• With these technology it is possible to handle

extremely high loading conditions without any problem

of clogging and treat industrial, municipal, and

domestic sewage or waste water on relatively low foot

print area.

Raw Sewage Bar Screen Oil & Grease

trap Chamber

Equalization

Tank

Bio-Reactor Tube Settler Chlorination Tertiary

System

Treated Water Sludge

Handling

Inlet • Flow Diagram for MBBR

Images

• Operating Parameter

Parameter Inlet Outlet

pH 7 to 8 6 to 7.5

BOD 250-350 mg/l <30 mg/l

COD 400-600 mg/l <100 mg/l

TSS 200-300 <20 mg/l

Oil & Grease 100 <5

Flow Sheet for MBBR Process

Presented By

Vipul Chavda

B.E. Chemical , MBA

Director

Cleantech Water

+91-9558996411