Two - Sessions Time | Xinhua News Agency: Beijing Tongzhou Bishui Reclaimed Water Plant Contributes to the “Dual - Carbon” Goals and High - Quality Urban Development

In November 2024, the National Development and Reform Commission and the Ministry of Housing and Urban - Rural Development jointly released the first batch of national green and low - carbon benchmark sewage treatment plants and their experience. The Bishui Reclaimed Water Plant of China Water Environment Group in Beijing's sub - center was selected as a “technology and management innovation - oriented benchmark plant” for its distributed and sunken reclaimed water ecosystem and significant achievements in reducing pollution and carbon emissions.

Solving the “Not - in - My - Backyard” Problem and Creating a “Second Water Source”

The Bishui Reclaimed Water Plant is the first sunken reclaimed water plant in China to adopt the “non - stop production expansion and reconstruction on - site” model. Its core technology — the distributed and sunken reclaimed water ecosystem — was independently developed by China Water Environment Group, completely replacing foreign technologies.

By placing the 180,000 - ton - per - day sewage treatment facilities entirely underground, the project has thoroughly solved the “not - in - my - backyard” problems of odors and noise in traditional sewage plants. It has saved two - thirds of the land resources, released more than 70,000 square meters of above - ground space, and created an ecological complex of “underground water plant + above - ground park” integrating artificial wetlands and garden landscapes.

As the largest - scale reclaimed water plant in the eastern region of Beijing's sub - center, the Bishui project serves a population of nearly 700,000 and covers 84% of the domestic sewage treatment tasks in the developed area of Tongzhou. The water quality of the effluent reaches the Class IV standard for surface water. The 65 million tons of high - quality reclaimed water produced each year is 100% reused in areas such as Universal Studios, administrative office zones, and Yudai River ecological water - replenishment. This is equivalent to saving a medium - sized reservoir's water volume for Beijing.

Aligning with National Strategy and Creating a Green Development Benchmark

In terms of energy - saving and carbon - emission reduction, the Bishui Reclaimed Water Plant project integrates and applies multiple technologies such as intelligent aeration control and water - source heat pumps, reducing carbon emissions by more than 10,000 tons per year. The Nanming River project of China Water Environment Group in Guiyang, which uses this system technology, was selected for the “Typical Cases of Carbon - Peak and Carbon - Neutrality in Urban and Rural Construction.”

“Sewage is the city's ‘second water source’ and an important strategic resource for green development,” said Hou Feng, chairman of China Water Environment Group. “The Bishui project has achieved 100% utilization of water resources, land resources, and green energy through technological and management innovation, providing a systematic solution to the contradiction between water security and ecological space in large cities.”

Maximizing “Water - related” Efforts to Empower Beijing's Sub - center

Beijing's sub - center is focusing on the construction of a national - level demonstration zone. Through policy innovation, technological application, and industrial upgrading, an ecological layout of blue - green interweaving and water - city integration is taking shape, with a more distinct green and ecological foundation.

Currently, Beijing's sub - center is accelerating the construction of the Grand Canal Cultural Belt and the integrated development of “culture, tourism, sports, and commerce” by taking the Bishui project as a model. Projects such as the improvement of the North Canal's waterside shoreline and water - scene performances have been successively launched to promote the coordinated release of water - shore economy and ecological value.