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Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation
Frontiers of Environmental Science & Engineering ( IF 6.4 ) Pub Date : 2020-03-20 , DOI: 10.1007/s11783-020-1222-4
Zhengsheng Lu , Moran Wang , Mingkai Zhang , Ji Li , Ying Xu , Hanchang Shi , Yanchen Liu , Xia Huang

This study aims to propose a multi-point integrated real-time control method based on discrete dynamic water level variations, which can be realized only based on the programmable logic controller (PLC) system without using a complex mathematical model. A discretized water level control model was developed to conduct the real-time control based on data-automation. It combines the upstream pumping stations and the downstream influent pumping systems of wastewater treatment plant (WWTP). The discretized water level control method can regulate dynamic wastewater pumping flow of pumps following the dynamic water level variation in the sewer system. This control method has been successfully applied in practical integrated operations of sewer-WWTP following the sensitive flow disturbances of the sewer system. The operational results showed that the control method could provide a more stabilized regulate pumping flow for treatment process; it can also reduce the occurrence risk of combined sewer overflow (CSO) during heavy rainfall events by increasing transport capacity of pumping station and influent flow in WWTP, which takes full advantage of storage space in the sewer system.



中文翻译:

基于水位的离散集成动态控制来调节下水道污水处理厂的流量

这项研究旨在提出一种基于离散动态水位变化的多点集成实时控制方法,该方法只能基于可编程逻辑控制器(PLC)系统才能实现,而无需使用复杂的数学模型。建立了离散水位控制模型,以基于数据自动化进行实时控制。它结合了废水处理厂(WWTP)的上游泵站和下游进水泵系统。离散水位控制方法可以根据下水道系统中动态水位变化来调节泵的动态废水泵送流量。该控制方法已经成功地应用于下水道污水处理厂的实际集成操作中,该系统可根据下水道系统的敏感流量扰动进行操作。运行结果表明,该控制方法可以为处理过程提供更加稳定的调节泵送流量。通过增加泵站的输送能力和污水处理厂的进水量,它还可以减少暴雨期间下水道溢流(CSO)的发生风险,充分利用了下水道系统中的存储空间。

更新日期:2020-04-21
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