Site visit done by: Amrita Bhatnagar
Date of visit: 7 August, 2017
|Location: Gole Market (28.634202, 77.205190)||
Designed Capacity: 200 KLD (Design)
Operational since: February, 2017
Capital Cost: INR 20 Lacs (approx)
Area: 215.25 Sq. m
O&M: INR 600/ year (cost of electricity) + INR 20,000/ month
Gole Market‘s Soil Biotechnology STP is a part of NDMC’s project of building 10 decentralized sewage treatment plants across the city on PPP (Public Private Partnership) model. The need was seen for a DWWT plant which would help in reducing wastewater discharge into rivers as well help in the greenery of the neighbourhood.
The system comprises of the following components:
The system comprises of the following components (see figure 2, 4 & 5):
The water enters the plant via this chamber .This is a small chamber meant to filter out any plastic waste.
This tank is further divided into three parts
Water is pumped to the bio reactor with the help of a 2 hp pump, which then gets delivered to the plants with the help of sprinklers.60% of treatment gets completed, by the time the water flows out of the Bio reactor I. The bioreactor is made up of different layers of brick bats, aggregates and cultural catalyst.
Thickness of layer: 150-200mm
Thickness of layer: 400mm
Thickness of layer: 100 mm
The water under the influence of gravity percolates through the bio reactor and gets collected in the collection tank 1.A 2 HP motor then delivers the water to the bio reactor II.
The bio reactor II is identical to the bio reactor II and intends to facilitate another cycle of filtration. The water from the bio reactor II percolates into collection water tank II.
The water gets pumped to water hydrants with the help of two 5hp and one 3 hp motor.