Construction Industry News
Water Minister Satyendar Jain announced on Tuesday that the Delhi Jal Board (DJB) is building a 200 tons per day sludge treatment plant at its Kondli Water Treatment Plant (STP), and that all STPs in Delhi will have their sludge treatment plant within the next two years.
According to Jain, DJB's 36 WWTPs produce about 700-800 tons of sludge residue per day, which will be treated with modern technology in sewage treatment plants.
Sludge management has become a major problem in the city, according to a senior DJB official.
The official said sewage sludge is a solid or sludge residue that forms as a by-product of sewage treatment plants. This sludge is transferred to tanks where anaerobic bacteria break it down to produce biogas, which can be used to generate electricity at low cost. The residual sludge is then dumped at the sludge dumps of the DJB or municipal corporations. But it eventually pollutes the area.
The sludge treatment plant being built in Kondli, East Delhi, aims to address this problem. According to the official, it will be built on the site of the existing Kondli facility, which already has four STPs.
The water minister said only 5% of the sludge will remain once the sludge treatment plant is operational.
Even the remnants will be used to make tiles and improve soil conditions. According to Jain, the project will have an operation and maintenance period of 15 years.
The facility will be operational on March 31, 2022, and the model can be replicated across all 36 STPs currently in use, according to Jain.
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