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Kolhapur Municipal Corporation to test treated water every week
The Kolhapur Municipal Corporation (KMC) has independently started testing the treated waste water samples from sewage treatment plant (STP) at Kasba Bawada.
The decision has been taken after the draft environment status report (ESR) prepared by a third party slammed the civic administration for failing to effectively treat the waste water.
The draft ESR claimed that parameters like biological oxygen demand (BOD) is on the higher side which means the amount of pollutants in the treated water is bad and should not be released in Panchganga river.
Abhijeet Chaudhari, municipal commissioner, said, "We have decided to test the treated waste water samples every week. The samples will be sent to the laboratory at Shivaji University. The quality of treated waste water can be effectively monitored through the sample testing."
The waste water from Jayanthi nullah is lifted to the STP with capacity to treat 76 million litre per day. The Maharashtra Pollution Control Board (MPCB) has asked the KMC to strictly monitor the quality of the waste treated. If the quality remains poor then it means the plant is not effectively functioning.
The KMC has to frequently issue advisories to villagers in the downstream area to drink boiled drink water to avoid water-borne diseases. The KMC authorities have found that many components of the STP are not installed and have ordered to stop bills till these components are in place.
"The atomisation components such as SCADA (supervisory control and data acquisition) have not been fully activated. The sludge system and chlorination needs to be atomised. I have asked the officials to stop the bills till these components are not installed," said Chaudhari.
The STP consists of six basins and the sewage pumped is settles in these basins. The oxygen level of the waste water is increased by continuous stirring and the sludge is removed. The waste water is then chlorinated.
The STP is meant for secondary treatment of the waste water which involves use of microbes to remove pollutants and bring down the BOD level to the level of the river water.
The technology used in the STP is called sequential bed reactor (SBR) which is based on the process of aeration and decanting the sewage water in a series of simultaneous reactions operating in cycles. The technology is advantageous as it decreases the biological oxygen demand to match up with the river water, less manpower is required to operate and stable sludge is generated which is easy to dispose. However, the officials have found that the STP is not functioning as expected.