肥城：再生水利用让“废水”变“活水”

Core Insights - The article highlights the innovative water resource management approach in Feicheng, Shandong Province, focusing on the integration of wastewater treatment, wetland purification, and recycled water utilization to transform wastewater into usable water [1][2]. Group 1: Water Resource Management - Feicheng has implemented a comprehensive system for water resource management, addressing severe water scarcity by creating a full-chain system from wastewater treatment to purification and recycling [1]. - The National Energy Group Shandong Shiheng Thermal Power Co., Ltd. benefits significantly from recycled water, reducing annual wastewater generation by approximately 600,000 tons and improving the efficiency of its boiler water treatment system [1]. Group 2: Wastewater Treatment and Purification - The Kanghui Wastewater Treatment Plant plays a crucial role in the water management system, utilizing A²O integrated oxidation ditch technology to treat wastewater before it is sent to the Kanghui River wetland for further purification [2]. - After wetland treatment, the water is processed at the Kangrun Water Co., Ltd. recycling plant using a "ultrafiltration + reverse osmosis" dual membrane method, ensuring the water quality exceeds national standards for industrial water reuse [2]. Group 3: Recycled Water Utilization - The chemical industry park in Feicheng has achieved a 90% allocation of recycled water, with an industrial water reuse rate of 96%, allowing for the replacement of 11 million cubic meters of fresh water annually [3]. - The implementation of recycled water not only meets industrial production needs but also supports ecological replenishment and municipal uses, creating a beneficial cycle of "wastewater purification - ecological restoration - recycled utilization" [3].