重庆大学, 三峡库区生态环境教育部重点实验室, 重庆 400045
Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
对排水管网和污水处理厂的一体化管理,可极大提升城市排水系统运行的高效性和安全性。作为厂网一体化运营理念的一部分,铁盐的综合使用愈发受到关注。在城市排水系统中,铁盐可在污水输送、污水处理及污泥处理过程中发挥作用。围绕铁盐的迁移转化路径、铁盐在污水输送和污水处理厂中的作用机制,以及系统末端铁盐的回收这4个方面,综述了城市排水系统中铁盐综合使用的研究进展。最后根据当前的研究现状,总结了铁盐综合使用中面临的挑战并给出了相关建议,并从厂网一体化铁盐自动加药控制和末端铁盐的进一步回收两方面进行了展望。
The integrated management of drainage network and sewage treatment plant has greatly improved the efficiency and safety of urban drainage system. As a part of plant-network integrated operation concept, the comprehensive use of iron salt has attracted more and more attention. In urban drainage systems, iron salt can play a role in sewage conveyance, sewage treatment and sludge treatment. This paper summarizes the research progress of comprehensive use of iron salt in urban drainage system from four aspects: the migration and transformation path of iron salt, the action mechanism of iron salt in sewage conveyance and sewage treatment plant, and the recovery of iron salt at the end of the system. Finally, according to the current research status, the challenges faced in the comprehensive use of iron salt are summarized, and the usage suggestions are given,and the research prospects are put forward on plant-network integrated automatic dosing control and terminal further recovery of iron salt.
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Migration and transformation path of iron salt in urban drainage systems
Variation of sulfide species proportion with pH
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