摘要
传统砂滤池运行按照固定时间或者水头损失阈值触发相同的反冲洗策略方式,无法满足实际运行精准冲洗的需求。上海临港水厂从累计过滤流量、标准化水头损失和滤池出水浊度阈值3个方面构建了滤池综合健康度评价体系,分别对单格滤池运行状态进行实时监测、评估和预测,依据健康度预测结果,同时考虑峰谷电价因素,规划滤池的反冲洗排班,实现按需冲洗。智能滤池投运后,平均处理水量提升13.71%。另外,还构建了反冲洗效用模型,利用优化算法动态调整气冲、气水冲、水冲三阶段的反冲洗时长,与系统上线前相比,初滤水浊度由0.24 NTU降至0.09 NTU,出水浊度由0.05 NTU降至0.03 NTU。此外,在保证滤池清洗到位的前提下,反冲洗水耗降低11.73%,电费降低36.61%。
Traditional sand filter operation triggers the same backwash strategy at a fixed time or head loss threshold,which does not meet the need for precise flushing according to the actual situation.Shanghai Lingang waterworks has constructed a comprehensive health evaluation system for the filter from three aspects:cumulative filtration flow,standardized head loss,and filter effluent turbidity threshold,which monitors,evaluates and predicts the operation status of the single‑grid filter in real time,and plans the backwash schedule of the filter according to the health prediction results and the peak and valley electricity price factors at the same time,so as to achieve on‑demand flushing.After the intelligent filter was put into operation,the average water treatment increased by 13.71%.The system also constructs a backwash utility model,and uses the optimization algorithm to dynamically adjust the three‑stage backwash duration of air flushing,air-water flushing,and water flushing,which reduces the turbidity of primary filtered water from 0.24 NTU to 0.09 NTU,and the turbidity of effluent from 0.05 NTU to 0.03 NTU compared with before the system is launched.In addition,on the premise of ensuring that the filter is cleaned in place,the backwash water consumption is reduced by 11.73%,and the electricity cost is reduced by 36.61%.
作者
陈德放
CHEN De‑fang(Lingang Water Supply and Drainage Development Co.Ltd.,Shanghai 201306,China)
出处
《中国给水排水》
北大核心
2025年第14期87-93,共7页
China Water & Wastewater
关键词
智能滤池
滤池健康度
遗传算法
反冲洗优化
intelligent filter
filter health
genetic algorithm
backwash optimization
