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2026-09-042026年7月27日, inside the water treatment workshop of Anhui Huaibei Juneng Power Generation Co., Ltd., urban reclaimed water, after层层 filtration and purification, is delivered via pipelines to the cooling system of the 660-MW ultra-supercritical double-reheat clean and efficient coal-fired power generating unit, marking a new milestone in "point-to-point" reclaimed water reuse for the thermal power industry in this water-scarce city in northern Anhui. Currently, Huaibei's reclaimed water utilization rate has exceeded 45%, with reclaimed water accounting for approximately one-third of industrial water use, and the cumulative industrial reclaimed water utilization volume has surpassed 3.5亿 cubic meters.
The Water Scarcity Challenge: Per Capita Water Resources of Only 398 Cubic Meters
Huaibei is a typical resource-based water-scarce city in northern Anhui, with per capita water resources of only 398 cubic meters, far below the internationally recognized 500 cubic meter "extreme water scarcity" warning line. On one hand, pillar industries with high water consumption such as thermal power and chemicals must operate steadily; on the other hand, groundwater over-extraction urgently needs to be curbed — reclaimed water utilization has become the key option to break the deadlock. In recent years, Huaibei has focused on high water-consuming industries, establishing a full-chain reclaimed water utilization system covering "production—transmission and distribution—application—management," providing industrial enterprises with a stable and reliable "second water source."
Engineering Support: 16-km Dedicated Pipeline Built with 5732万 Yuan from Central Water Conservancy Development Funds
The core infrastructure for this "point-to-point" utilization in the thermal power industry is the 16-km reclaimed water "point-to-point" transmission and distribution pipeline, constructed with an investment of 5732万 yuan from central water conservancy development funds. This project is an important component of Huaibei's reclaimed water utilization configuration pilot program. Construction commenced in 2025年 5月 and water supply was commissioned in 12月 of the same year. Project funds were managed under a full-process closed-loop system, with a fund payment rate of 100% as of 2026年 6月.
At the other end of the pipeline, Huaibei Juneng Power Generation Co., Ltd.'s 660-MW ultra-supercritical double-reheat unit is one of Anhui Province's major clean and efficient coal-fired power units, with an enormous cooling system water demand. After reclaimed water is integrated into the enterprise's production system, it can replace approximately 1100万 cubic meters of high-quality fresh water resources annually, effectively reducing the enterprise's external raw water procurement expenditure and lowering water treatment costs. Meanwhile, the power plant's production end is equipped with a full-plant Zero Liquid Discharge (ZLD) process, with circulating water blowdown reused and concentrated brine treated via flash evaporation, achieving maximum utilization of water resources.
Scale Effect: Utilization Rate Above 45%, Ranking Among the Nation's Advanced Levels
Point-to-point water supply is only one facet of Huaibei's reclaimed water landscape. Systematic data better demonstrates the city's transformation achievements:
- Leading utilization rate — In 2026年 2月, Huaibei's reclaimed water utilization configuration pilot passed the on-site evaluation by six ministries and commissions including the Ministry of Water Resources, and was selected among the nation's advanced typical cases; currently, the city's reclaimed water utilization rate has exceeded 45%, with reclaimed water accounting for approximately one-third of industrial water use;
- Substantial cumulative utilization volume — The city's cumulative industrial reclaimed water utilization volume has surpassed 3.5亿 cubic meters, and the conventional water sources replaced can meet the 3年 water demand of all city residents;
- Significant improvement in water ecology — The water quality of the Old Sui River has stably met the Class III surface water standard, the proportion of excellent water quality at 4 national surface water assessment sections has surged from 25% to 75%, the area of groundwater over-extraction zones has been reduced by 35%, and groundwater levels continue to recover.
With the large-scale utilization of industrial reclaimed water, the external discharge of treated municipal wastewater tailwater in Huaibei has been substantially reduced, and the water ecological environment continues to improve, charting a new path of high-quality development that coordinates water conservation, pollution control, and economic growth for a water-scarce industrial city.
Outlook for the 15th Five-Year Plan: Mandatory Allocation and Full Supply
A relevant official from the Huaibei Municipal Water Affairs Bureau stated that during the "15th Five-Year Plan" period, the city will strictly implement mandatory reclaimed water allocation, improve pipeline networks in industrial parks, and gradually expand utilization scenarios such as municipal miscellaneous use and ecological water replenishment, truly achieving "full supply where required and full utilization where applicable," continuously transforming "wastewater" into resources and investment into added value.
What This Means for Us: TIANYI TECH's Perspective
The value of the Huaibei case lies in its presentation of three clear accounts: a resource account (a 16-km pipeline leveraging an annual replacement volume of 1100万 cubic meters), an economic account (dual reduction in enterprises' external raw water procurement expenditure and water treatment costs), and an ecological account (a 50-percentage-point improvement in the proportion of excellent water quality at assessment sections). In our Reclaimed Water Reuse practices for Industrial Parks and high water-consuming industries, TIANYI TECH likewise insists on calculating these three accounts clearly — breaking through the transmission and distribution bottleneck between wastewater treatment plants and industrial users through "point-to-point" dedicated pipelines, ensuring water quality stability for industrial scenarios such as cooling water through advanced treatment, and achieving cascaded utilization through full-plant water balance optimization. As mandatory reclaimed water allocation policies are rolled out across regions, the "thermal power point-to-point" model will be replicated in more water-scarce cities, and we will continue to provide high water-consuming customers with full-chain reuse services from solution design to operation management.
About TIANYI TECH (TIANYI LIMITED): TIANYI TECH has been deeply engaged in the fields of wastewater treatment and reclaimed water reuse, committed to providing efficient, low-carbon, and sustainable water treatment solutions for municipal and industrial clients.
Source: Xinhua Net Anhui Channel, Huaibei News Network (2026年8月4日) and other public reports. This article is a compilation of industry information for readers' reference.
