Annexure -

ETP BRIEF PROCESS DETAILS

The effluent from process plant comes to Collection tank. From there, we take it from Collection tank to Equalization tank. Where the quality & quantity is uniformed. Then after the effluent is taken to Neutralization tank. Where the effluent is neutral and added Polyelectrolyte and Alum for better flocculation. From there the effluent is filtered in filter bed. After that, the clear effluent is taken in primary clarifier. Where the sludge is settled down. The clear effluent is then taken to Aeration tank. Where the organic material is decomposed by micro organism in presence of oxygen. In this way the COD & BOD are reduced. From there, the effluent is taken to secondary clarifier. The sludge is settled to the bottom of clarifier. Which is either recycle to aeration tank or discharged to sludge drying bed as per process requirements. From there the effluent is taken to collection tank. After that, the effluent is passed to send filter & carbon column where S.S & color is removed & finally the treated effluent goes to GIDC under ground drainage system.

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Details of Effluent Treatment Plant

No. Name Of the unit Capacity in m3 MOC Flow from Flow to

1. Collection Tank 50 KL x 2 Nos. RCC with BL

Process Plant Equalization Tank

2. Equalization Tank 180 KL x 2 Nos.

RCC with BL

Collection Tank Neutralization Tank

3. Neutralization Tank 75 KL x 2 Nos. RCC with BL

Equalization Tank Filter Bed

4. Filter Bed 60 Sq. Mtr. RCC Neutralization Tank Primary Clarifier 5. Primary Clarifier 15 KL RCC Filter Bed Aeration Tank 6. Aeration Tank 530 KL RCC Primary Clarifier Secondary Clarifier

with mechanism. 7. Secondary Clarifier

with mechanism. 15 KL RCC Aeration Tank Sump

8. Sump 6 KL RCC Secondary Clarifier with mechanism.

Sand filter

9. Sand filter 1.2 KL MS Sump Act. Carbon filter 10. Act. Carbon filter 1.2 KL MS Sand filter To GIDC under

ground drainage system.

11. Aerator 20 HP x 1 No. & 15 HP x 1 No.

MS/ CI --- ---

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