Authorities in Hanoi started construction on Monday on underground sewer systems for the To Lich and Lu rivers which have been seriously polluted by wastewater.
Hanoi starts construction on underground sewer systems for the To Lich and Lu rivers on May 18
According to Nguyen Van Hung, director of Hanoi’s Drainage and Sewage Project Management Board, the sewer system will span 21 kilometres including 11.4 kilometres running through the To Lich River from Hoang Quoc Viet Street in Cau Giay District to Quang Bridge in Thanh Tri District.
“The sewers will collect wastewater under the river bed and send to a treatment plant in Yen Xa in Thanh Tri District,” Hung said.
A Japanese contractor has been chosen to build the sewer system, and the work is expected to be completed in 48 months.
The Yen Xa Wastewater Treatment Plant has been under construction since October 2016. The plant is part of a bigger project with an investment of VND16.3 trillion (USD709 million). The project included the plant with a capacity of 270,000 cubic metre a day and a sewer system collecting wastewater on an area of 4,874 hectares in the To Lich, Lu, Set and Nhue rivers.
The To Lich River runs 14 kilometres through several districts of Thanh Xuan, Hoang Mai and Thanh Tri and has become infamous for its pollution.
Over 150,000 cubic metres of untreated household wastewater is being discharged into the river every day, according to the city Department of Natural Resources and Environment. Wastewater from factories adds to the pollution.