Clean-up working for once-polluted Shenzhen river
Shenzhen has finished 86 percent of a comprehensive improvement project of the local Shawan River, aiming to clean-up the once-polluted river and restore its ecological system, according to the manager of the company undertaking the project.
The three-year project is scheduled to be finished by the end of this year at a cost of about 640 million yuan ($91 million).
The Shawan River originates in the Niuwei range in Longgang district, and has a drainage area of more than 26 square kilometers, mostly located in the upper reaches of rivers flowing into the Shenzhen Reservoir, the most important source of drinking water for Shenzhen and neighboring Hong Kong.
The river was surrounded by many residential communities and industrial zones before the project started. In 2016, it was identified as one of the 36 major polluted waterways in the city.
The project also aims to improve the river’s flood prevention ability to a level whereby it can handle a heavy flood occurring once a century. A new sewage water processing system was built near the river to ensure that all waste water in the dry seasons can be treated.
Also, a 12,000-square-meter wetland park and a 13.77-km-long green belt will be built, providing local residents with ideal places for leisure activities.