Effluent treatment plant process

study of effluent treatment plant ,in this how the industrial effluent are treated by using ETP plant

1. STUDY ON EFFLUENT TREATMENT PLANT

2. WHAT IS AN EFFLUENT TREATMENT PLANT? ETP is used to purify the contaminated water coming from the industries.

3. SEMI CONTINUITY PICKLING

4. FLOW CHAT O F ETP RINSE WATER SPENT ACID AREATION & NEUTRALIZATION PRE-TREATMENT REVERSE OSMOSIS PRODUCT WATER TANK INLET FROM SCP TEXTILE INDUSTRY

5. 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

6. PROCESS INVOLVED IN ETP AERATION & NEUTRALIZATION PRE-TREATMENT REVERSE OSMOSIS

7. 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.

8. NEUTRALIZATION Th e 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.

9. 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.

10. 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.

11. STRUCTURE OF FILTER PRESS

12. 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.

13. 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.

14. 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.

15. 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.

16. WHAT IS AN OSMOTIC PRESSURE ? The tendency for solvent to flow through the membrane can be expressed as "osmotic pressure".

17. 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 ?

18. 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%.

19. THANK YOU

20. ABOUT ME N MOHAN REDDY B.Tech, M.Des (Industrial Design) Mobile:[phone]