摘要
针对供水厂Ⅴ型滤池的定时法反冲洗因预设时间不够科学合理而导致的水资源浪费或冲洗不彻底的行业痛点,从硬件设计和优化算法两个方面创新反冲洗控制模式,提出彻底冲洗干净和节水效益两种技术经济指标,采用以PLC与人机界面为主要控制载体,辅以在线浊度监控的滤池反冲洗节水系统设计。系统基于任意一个滤池反冲洗工艺的3个阶段时长是可被个性化预设和动态调整的基础上,加装在反冲洗排污出水口位置的浊度计可实时监测反冲洗期间的排污水浊度,为动态控制和结束水反冲洗步骤的决策提供科学依据,旨在使滤池既能被彻底冲洗干净,又可充分发挥节水效益。通过试验研究,对经验定时法和节水系统两种反冲洗控制模式进行技术经济分析对比,计算得出年约节省3万余吨反冲洗水量,结果表明投用于制水量越大的供水厂,节水系统所产生的节水、节能效果越显著。
For the backwash with the timing method in the V-shaped filtering sink of a water supply factory,the preset time is not scientific and reasonable enough,leading to the waste of water resources and incomplete washing.To overcome such a difficulty in the industry,the backwash control mode was innovated in terms of hardware design and optimization algorithm,the technical and economical indexes of complete washing and benefits of water saving were proposed,and the water-saving design of filtering sink backwash with the main control carrier of PLC and human-computer interface supplemented by the online turbidity monitoring was used.The system can be preset and dynamically adjusted in a customized way based on three stages of any filter backwashing process.And a turbidimeter installed at outlet of backwashing sewage outlet can monitor turbidity of sewage during backwashing period in real time,which provides a scientific basis for dynamic control and decision-making of ending water backwashing process,in order to make filter not only be thoroughly washed,but also fully have water-saving benefits and achieve the goal of water-saving and energy-saving.Through the experimental study of the water supply factory tested,technical and economic analysis and comparison were made for the backwash control modes of empirical timing method and water-saving system.According to the calculation,more than 30 000 tons of backwash water can be saved each year.The results show that the bigger the amount of water produced by the water supply factory is,the more obvious the water-saving and energy-saving effect of the water-saving system is.
作者
李明俊
郑洪波
雷斌
苏江
钟钊明
Li Mingjun;Zheng Hongbo;Lei Bin;Su Jiang;Zhong Zhaoming(School of Robotics,Guangdong Vocational College of Science and Technology,Zhuhai,Guangdong 519090,China;Zhuhai Key Laboratory of Advanced Equipment Manufacturing and Material Forming Technology,Zhuhai,Guangdong 519090,China;Duanzhou Water Supply Branch,Zhaoqing Zhaoshui Water Development Co.,Ltd.,Zhaoqing,Guangdong 526060,China)
出处
《机电工程技术》
2021年第12期201-203,210,共4页
Mechanical & Electrical Engineering Technology
基金
广州市科技计划项目(编号:201804010315)
广东省普通高校工程技术中心项目(编号:2021GCZX018)
广东省教育厅2020年度普通高校重点科研平台和项目(编号:2020CJPT004)。
关键词
Ⅴ型滤池
水质浊度监控
反冲洗
节水
结束条件
Ⅴ-shaped filter
water quality turbidity monitoring
backwashing
water-saving
ending conditions
