CSE Lab

2.5 MLD CAMUS – SBT Type Sewage Treatment Plant at Pandharpur, Maharashtra

Photo Credit: CSE
February 25, 2022

 

Scale of service

Suburb Level

Area of installation (Sq-m)

1800 Sq-m + Utility space

Year of Installation

September, 2019

Capital cost

Rs. 5 Crores

Location

Pandharpur, Maharashtra

Operational & Maintenance cost

Rs. 15 Lakhs/ Year

Funding Agency

Pandharpur Municipal Council

Design Capacity

 2.5 MLD

Technical Support Partner

Vision Earthcare Pvt Ltd
 
Project Background: The 2.5 MLD capacity of soil biotechnology (SBT) based decentralized wastewater treatment plant at Pandharpur was set up to treat wastewater from pilgrim accommodation and colonies. The treated water is being used for irrigation and horticulture purposes.
 

The Wet Well (WW) paves the way by a coarse screen, where plastics and other detritus are captured, and the sewage then enters the wet well. The wet well is provided with multiple pumps for working in standby condition, and the pumps are provided with a block and tackle method for removal of the pumps. After the WW, the water is pumped into the inlet screen chamber (ISC) of the STP; the ISC is provided with a fine screen that removes the fine particles like fibers, which may have escaped the core screen. After this, the water enters the first preliminary treatment process through a pipe, where the water joins the inlet weir of the tube settler and goes downwards. Here, it rises through the tube settler pack and is suspended solids in the sewage are removed at this stage.

Further, the water goes into the next tank, the Equalization tank (EQT). It is provided with multiple pumps, and it transfers the clarified sewage from EQT to the next stage. The EQT is designed to handle the peak flows of the system.  The pipe is then connected to Bio Mound 1 (BM1), where nitrification takes place. Here, the water is evenly distributed and collected in Collection Tank 1 (CT1).  The ammonia in the inlet water has converted into nitrate in CT1. Then this water is pumped along with the residual EQT water into Bio Mound 2 (BM2), where the final removal of nitrogen by denitrification and residual of COD takes place. The water then percolates through BM2 and gets collected in Collection Tank 2 (CT2). The sludge from the bottom of the tube settler is pumped into the solids handling system, which is built on top; once the sludge is dewatered, a red worm culture is used to compost the sewage solids gets converted into vermi compost.
 
Since three years of Operation & Maintenance, Plant has achieved sustained results with treatment efficiency in terms COD<50, BOD<10, TSS<10, respectively. The treated water is odor-free and color-free. Below are the outlet parameters as of August 2020.

Parameters

Inlet

Outlet

BOD (mg/l)

250

5

COD (mg/l)

425

15

TSS (mg/l)

300

6


Plant Process Walkthrough Video: https://www.youtube.com/watch?v=nJJuqP9BObw

Dr Chandrashekar Shankar
Mobile No: +91 9769605447
Email Id: cshankar@visionearthcare.com
Address: Vision Earthcare Pvt. Ltd.202/4,
Mandakini, Cosmopolitan CHS, Plot17, Sec19A, Nerul (E) 400706
Website: http://www.visionearthcare.com