中文
INNOVATIVE TECHNOLOGY

Technical Innovation

Guiyang Nanming River Intergrated Water Environmental Management PPP Project
Project generalization
The Nanming River, joined by 5tributaries of 82 km in length, drains a watershed of 6,600 km2 and runs 118.4 km long, including36.4 km of urban section. The Guiyang Nanming River Water Environmental Management PPP Project consists of multiple sub-projects regarding sewage interception and treatment, channel dredging, ecosystem restoration and landscape renovation, involving the construction of 9 high-standard WWTPs, upgrading of 6 existing WWTPs, and the construction of 100-km-long sewer pipe networks.
Project characteristics

1.Coming off three years of systematic management, the inferior ClassV water bodies in the mainstream and tributaries of the Nanming River declined to 7% from 51%, the ClassIV and III waterbodies increased to 31.6% and 35.6%, the water quality (COD measurement) of the mainstream steadily achieved Surface Water Quality Standard Class III, and the coverage rate of the aquatic plant was up from 15% to over 73%, making the project a successful example in the management of urban black and odorous “mother river” approved by the Ministry of Finance, Ministry of Ecology and Environment, Ministry of Housing and Urban-Rural Development.

2.The project saved RMB 1.1 billion of investment in sewer pipe network, 1053 mu of land, RMB 158 million of water transfer costs (the high-standard underground WWTP provided 200 million m3 of reclaimed water for ecological replenishment of watercourses each year) and RMB 30 million electricity costs per year, and reduced the construction time by 6 months.

3.The Guiyang Qingshan Underground WWTP as a key part of the Guiyang Nanming River Water Environmental Management PPP Project represents the first success of China in producing effluent achieving Surface Water Quality Standard ClassIV and effective ecological water replenishment. The WWTP provides a good place for the recreation of people and has been designated as the permanent site for Eco Forum Global Annual Conference Guiyang.


1. In August 2016

Chen Miner (the second from the left)

the then Secretary of the CPC Guizhou Provincial Committee

and Chen Gang (the third from the left)

the then Secretary of the CPC Guizhou Municipal Committee

inspected the implementation of the Guiyang Nanming River Water Environmental Management PPP Project. Chen Miner held that the project should give full play to its demonstration effects to comprehensively promote the ecological civilization construction of Guizhou.

2. In August 2016

Chen Miner (the second from the left)

the then Secretary of the CPC Guizhou Provincial Committee

and Chen Gang (the third from the left)

the then Secretary of the CPC Guizhou Municipal Committee