污水处理外加碳源与除磷药剂减量控制技术研究进展  

Research Progress on Control Technology for Dosage Reduction of External Carbon and Phosphorus Removal Chemicals in Wastewater Treatment Processes

作　　者：杨一夫 夏阳光 YANG Yifu;XIA Yangguang(Suyi Design Group Co.,Ltd.,Nanjing 210012,China;School of Civil Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]苏邑设计集团有限公司,江苏南京210012 [2]东南大学土木工程学院,江苏南京211189

出　　处：《净水技术》2023年第11期49-56,共8页Water Purification Technology

基　　金：江苏省重点研发计划(BE2021619)。

摘　　要：针对污水处理外加碳源与除磷药剂过量投加导致资源浪费与成本增加的问题,文中介绍了外加碳源、除磷药剂和精准化投加技术的研究现状,分析了通过工艺流程优化提升生物脱氮除磷的技术方法,提出了“从全流程工艺优化视角优先开展源头药剂减量,并与基于模糊控制和神经网络控制的智能控制技术相结合”的药剂减量化整体调控策略。结果表明,通过进水方式优化、增/改设内回流、精准曝气等工艺流程优化技术可有效提高脱氮除磷效能,适用于大多数污水处理厂提质增效。而对于进水水质波动大、对外加药剂依赖性较强的污水处理厂,应优先建立完整的智能控制系统。此外,指出了在实际运行中应根据进水水质及其变化特征,综合考虑污水处理厂工艺与运行条件,制定出“一厂一策”的碳源与除磷药剂投加调控策略。文章可为城镇污水处理厂实现低碳化、智能化、高效化发展提供参考。In response to the problem of resource waste and cost increase caused by excessive addition of external carbon sources and phosphorus removal chemicals in wastewater treatment,the status of external carbon sources,phosphorus removal chemicals and precision dosing technology are introduced in this paper,and the biological nitrogen and phosphorus removal improvement through process optimization is analyzed.An overall control strategy for chemicals reduction that combines priority chemicals reduction based on the perspective of comprehensive process optimization and intelligent control technology based on fuzzy control and neural network control is proposed.It is pointed out that the process optimization technology such as influent optimization,increase/change of internal reflux and precise aeration can effectively improve the efficiency of nitrogen and phosphorus removal,which is suitable for improving the quality and efficiency of most wastewater treatment plants(WWTPs).Moreover,a complete intelligent control system should be prioritized for WWTPs with large influent quality fluctuations and strong dependence on external agents.Furthermore,the process and operating conditions of the WWTPs should be considered in accordance with the quality and change characteristics of the influent in actual operation,and therefore a"one plant,one policy"of carbon sources and phosphorus removal chemicals addition control strategy should be formulated.It provides reference for the development of low-carbon,intelligent and high efficiency WWTPs.

关 键 词：外加碳源 除磷药剂 精准化投加 智能控制技术 全流程工艺优化 

分 类 号：TU992[建筑科学—市政工程]