HEJiali,FANGWeile,ZHOUPeiliang,et al.Research on Intelligent Backwashing System of Filters in Waterworks[J].China Water & Wastewater,2026,42(8):88-94.
自来水厂滤池智能反冲洗系统研究
- Title:
- Research on Intelligent Backwashing System of Filters in Waterworks
- Keywords:
- waterworks; filter; upgrading and transformation; intelligent backwashing; mathematical model; multilayer perceptron (MLP); multiple regression algorithm
- 摘要:
- 针对目前国内大部分自来水厂的滤池自动反冲洗控制主要通过人工设定滤池反冲洗周期的问题，以传统工艺水厂为例，不增加设备成本，利用原有自控条件，对过滤系统进行升级改造。根据试验水厂滤池的生产数据，利用神经网络的多层感知器（MLP）和多元回归算法建立数学模型，并将时间周期、水位、清水阀开度、压差等作为滤池反冲洗的触发条件，结合可编程逻辑控制器（PLC）技术，为滤池设定最优的反冲洗周期，保障滤池正常运行并起到节能降耗的作用。试验水厂运行数据显示，该系统在保证滤池反冲洗效果的同时，平均延长滤池运行时间约7 h，预计节省反冲洗清水约60 391 m3/a、反冲洗电耗约5 110 kW·h/a。
- Abstract:
- The intelligent backwashing system for filters is an important part of the construction of a smart waterworks. At present, in most domestic waterworks, the automatic backwashing control of filters is mainly achieved through manually setting the backwashing cycle of the filter. This study takes a traditional process waterworks as an example. Considering not to increase the equipment cost, it upgrades and transforms the waterworks filtration system based on the existing automatic control conditions of the waterworks. According to the production data of the filter in the test waterworks, mathematical models were established using MLP neural networks and multiple regression algorithms. Time cycle, water level, clear water valve opening, and pressure difference are taken as the trigger conditions for filter backwashing. Combined with PLC control technology, the optimal backwashing cycle is set for the filter to ensure its normal operation and achieve energy saving and consumption reduction. The operation data of the test waterworks shows that the system can ensure the backwashing effect of the filter while extending its operating time by an average of about 7 hours. It is estimated that about 60 391 m3 of backwashing water and 5 110 kW·h of backwashing electricity can be saved each year.
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