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ACTIVATED SLUDGE MODEL

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ACTIVATED SLUDGE MODEL . By Rudra Narayan Gooptu. Objective. Its aim is to treat wastewater in a Wastewater treatment plant where nitrification is enabled. Constituents of the Plant . The plant is where the activated sludge process is implemented It consists of:.

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slide1
ACTIVATED SLUDGE MODEL

By

Rudra Narayan Gooptu

objective
Objective

Its aim is to treat wastewater in a Wastewater treatment plant where nitrification is enabled

constituents of the plant
Constituents of the Plant

The plant is where the activated sludge process is implemented

It consists of:

slide4
Flow scheme of Treatment Plant

Influent

Secondary Clarifier

Reactor 2

Anoxic

Reactor 3

Aerobic

Reactor 1

Anaerobic

Effluent

Return Sludge

computations
Computations

ASM provides the following types of computation:

slide6
Maximum Aeration Basin and Sludge

Sludge

Maximum Aeration Basin

managing supernatant
Managing Supernatant

The processes involved are:

introducing control mechanisms
Introducing Control Mechanisms

Control in ASMare of the following types:

  • On/off control
  • Proportional control
  • Aeration Control: oxygen concentration depends upon pollutant load and temperature. Aeration control is of the following types:
  • On/off control
  • Temperature control
denitrification in secondary clarifier
Denitrification in Secondary Clarifier

A secondary clarifier aims at an ideal separation of sludge, and providing a hydraulic hindrance to the wastewater flow

The Process Involves:

  • Formation Of sludge blankets
  • Consumption of residual oxygen
  • Formation of sludge islands
slide13
Sludge Treatment using retrievable diffusers

Bacteria ( seen under a microscope)

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