L&T Awarded DJBs 106 MGD Chandrawal WTP
Delhi to get 106 MGD WTP at Chandrawal
New Drinking Water Treatment Plant (WTP) at Chandrawal was recently approved by Delhi Jal Board (DJB) in its 146th meeting held under under the chairmanship of Arvind Kejriwal Chief Minister Delhi and Chairman DJB as per DJB’s press release dtd. 29th May 2019.
The board has given approval for construction of an additional WTP of 106 Millions of Gallons per Day (MGD) / 477 Millions of Litres Per Day (MLD) (47.7 Crore Litres per day) capacity. The expected cost of the plant is about Rs. 598 Cr. and is envisaged that the construction could be completed in a period of 3 years. The project is funded under Japan International Cooperation Agency (JICA) scheme.
The Chandrawal WTP is part of the Government’s Delhi Water Supply Improvement Project (DWSIP) with mission of providing continuous and equal water distribution in Delhi. The project has been awarded to L&T ECC.
As per L&T’s press release dtd. 10th June 2019 “An EPC order has been bagged from the Delhi Jal Board for the design, construction, installation, automation, testing, commissioning and O&M of a 477 MLD water treatment plant (WTP), a 105 ML clear water reservoir and a pump house for the Chandrawal command area.”
This plant shall cater to 22 lakh residents of various areas such as Civil Lines, Karol Bagh, Rajender Nagar, Naraina, Delhi Cantonment area partly, NDMC areas, Chandni Chowk etc (the project’s command area).
About Chandrawal WTP
Chandrawal WTP was constructed in two phases earlier in the year 1930 (159 MLD / 35 MGD) and 1960 (250 MLD / 55 MGD). The new approved WTP will be constructed in addition to existing 90 MGD plants. The current capacity of the project is 98 MGD or which 8 MGD is the capacity of the recycling unit. After completion of new plant, total capacity shall become 204 MGD.
Benefits of Coming Up Project
The plant shall have advanced technology of Ozonation and Activated Carbon which shall help in treating high ammonia content level up to 4 ppm in Yamuna’s water. The plant shall also consist of advanced central water monitoring system which shall monitor and control water flow in its entire command area.
The high level of ammonia treating ability of the new proposed Chandrawal WTP shall help in avoiding plant shutdowns which result in disruption to water supply. This shall result in smooth functioning and shall not be effected by ammonia discharge by Haryana. Currently, presence of 1 ppm of ammonia in the raw water could cause the WTP to shut down.
Present WTPs of Delhi
Presently utility is supplying 900 MGD of drinking water to Delhi with average demand of 1,120 MGD. The peak production is of 935 MGD. In all there are 11 WTPs in Delhi.
In addition to the above project, the 55 MGD WTP which is part of the existing plant would also be rehabilitated at the cost of 95 Cr. as approved by the board. Five packages of rehabilitation of water supply network, pumping stations are also in advance stages of tendering and estimation process and may be rolled out in next 4-5 months.