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Industrial Water Treatment
Keshopur Sewage treatment plant has a capacity of 72 MGD consisting of three STPs viz 12 MGD Phase I, 20 MGD Phase II, 40 MGD Phase III. Phase I STP with 12 MGD treatment capacity was commissioned in 1956 and has been abandoned about 8 year back. The plant is in the stage of dismantling; only civil structures are standing. All electrical and mechanical equipment including steel structures have been removed. Daily 12 MGD raw sewage is being pumped into Yamuna River through Najafgarh drain without any treatment. This STP is going to be replaced with a new 12 MGD STP that is under construction and is likely to be commissioned in 2010-11.
J M Enviro Technologies Pvt. Ltd. proposed the Delhi Jal Board to treat the sewage with ABR technology using Persnickety®713 with same existing structures without any use of power or major renovation in the plant. Delhi Jal Board readily agreed to our proposal and awarded work to us for bringing this plant operative and maintain for 6 months.
We took the job as a challenge and after making minor civil repairs in the existing system made the sewage to pass through all the component of STP i.e. bar screen, primary settling tank, aeration tank, final settling tank. Once the sewage started passing through all components, we started dosing the pre-calculated doses of Persnickety®713 at the inlet of plant on 23 March 2009.
By the end of first month, the average BOD load discharged to Yamuna River was reduced from 16.5 tons to 7.6 tons per day i.e. reduction of 54% and subsequently the reduction in BOD load was increased to more than 80% within six months.
The most significant achievement in this project is that BOD load reduction was obtained without any power consumption during the treatment of sewage at the sewage treatment plant; the manpower was also very minimal, since there was no requirement of skilled engineers, technicians etc.
The pictures given are witnessed for the conditions of STP before and after ABR Treatment to confirm the claims of JM Enviro.
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