STUDY ON EFFLUENT

TREATMENT PLANT

WHAT IS AN EFFLUENT TREATMENT PLANT?

• ETP is used to

purify the

contaminated

water coming

from the

industries.

SEMI CONTINUITY PICKLING

FLOW CHAT OF ETP

RINSE WATERSPENT ACID

AREATION & NEUTRALIZATION

PRE-TREATMENT

REVERSE OSMOSIS

PRODUCT WATER TANK

INLET FROM SCP

TEXTILE INDUSTRY

RINSE WATER

• The rinse water coming from the SCP

contains pH value 2 and total dissolved

salts(TDS) 6500 to 7500 ppm.

• This rinse water will be collected in the

collection tank

PROCESS INVOLVED IN ETP

• AERATION & NEUTRALIZATION

• PRE-TREATMENT

• REVERSE OSMOSIS

AERATION

• In this process lime powder is added to the rinse water upto 10 pH.

• Aeration brings water and air in close contact in order to remove dissolved gases such as carbon dioxide and soluble ferrous and manganese compounds present in the water may get oxidised in to insoluble ferric and manganic compounds, which can be sediment out easily.

NEUTRALIZATION

• The water can neutralized by using lime powder (ph 8 to 10 and TDC 6500 to 7500 ppm) in this mainly used for two reasons one is used for softening and another one is bond breaking iron and Manganese by rising ph value in the rinse water.

• rectangular tank is used to increase the gravitational force by adding polyelectrolyte.

TUBE SETLLER

• Device using bundles

of tubes to let solids

in water settle to the

bottom for removal by

conventional sludge

collection means;

sometimes used in

sedimentation basins

and clarifiers to

improve particle

removal.

FILTER PRESS

• Filter press separate the solids from the liquid, filter press generally work in a batch manner. The plates are clamped together, then a pump starts feeding the slurry in the filter press to the filer press to complete a filtering cycle and produces a batch of solid iron sludge filtered material, called the filter cake. The stack plate is opened solid is removed and fill in to the poly bags finally sludge send to the Ramky TSDF and the stack plate is re clamped and filtering cycle repeated.

STRUCTURE OF FILTER PRESS

IRON AND CARBON REMOVAL

• As water passes through

the green sand filter,

soluble iron and

manganese are absorbed

and later react to form

insoluble iron and

manganese. Insoluble

iron and manganese will

build up in the greensand

filter and will be removed

by backwashing.

• Activated carbon filter is used for the treatment dechlorination and removal of taste and odor from water, through absorption of the compounds that causes these problems. Activated carbon filter operates to an adsorption. Adsorption is directly related to the surface area to the media.

UF MODULES

• UF filter is removes suspended matter from the water the fine pores from an ideal physical barrier to remove impurities while allowing water molecules to pass through. Generally it contains 0.01micron.

REVERSE OSMOSIS

• WHAT IS REVERSE OSMOSIS ?

• The term osmosis means the net amount of water molecules from a region of high water potential to region of low water potential across a permeable membrane.

By applying an External pressure to

reverse the natural flow of solvent, these

process is known as revrse osmosis.

The external pressure is known as osmotic

pressure.

WHAT IS AN OSMOTIC

PRESSURE ?

• The tendency for solvent to flow through the membrane can be expressed as "osmotic pressure".

• Reverse osmosis involves a diffusive

mechanism so that separation efficiency is

dependent on solute concentration.

• Reverse osmosis is most commonly known for

its use in drinking water purification from sea

water.

• Remaining salts and other effluent materials

from the water molicules or from industrial

effluents.

WHY SHOULD WE HAVE TO APPLY AN OSMOTIC PRESSURE ?

WHAT IS MEMBRANE ?

• A membrane is a thin,film like structure that separates two fluids.

• It acts as a selective barrier.

• The membrane allows only solvent.

• The efficiency of the membrane is 75 to 80%.

THANK YOU

ABOUT ME

N MOHAN REDDY

B.Tech, M.Des (Industrial Design)

Mobile:9966282072