Accurate Traceability of Pollutants in Zhoucheng River Channel in Liyang

River and lake water environment governance and enhancement have become the focus of high-quality development. The premise of accurate pollution control is to precisely trace the source. Targeting the outstanding problems of rivers, implementing “one river, one policy,” strengthening supervision and management, and enhancing the pertinence and operability are the important tasks that need to be solved at this stage of river water environment improvement and remediation. The Zhoucheng River is located in the third-tier protection zone of the Taihu Lake Basin, and its water environmental protection is the focus of its renovation. In order to systematically carry out the Zhoucheng River water environment renovation to meet the standards, the Zhoucheng River water environment pollution comprehensive traceability, classifying and establishing a long-term mechanism as the main task, based on the investigation and analysis of the current state of the water environment quality to clarify the Zhoucheng River pollution status and causes, and further propose water quality management measures to meet the standards in a targeted manner. Through comprehensive evaluation of water quality, identification of main pollution factors and evaluation of main water quality indexes, etc., know that the water quality of the main stream of Zhoucheng River gradually deteriorates from upstream to downstream, and its main pollution factor is ammonia nitrogen, followed by total phosphorus and finally permanganate index. Besides, the main polluted section of the main stream of Zhoucheng River is located in the upstream section and the middle and downstream (Zhoucheng Settlement section).