自来水厂的能耗和药耗普遍较高，节能降耗优化是今后水厂的主要发展趋势，同时随着人们生活水平的提高，对饮用水的品质要求也越来越高，水厂的内控指标也在逐渐提高，如何满足水厂内控标准也是水厂优化运行的重要内容。本文主要针对重庆市长寿中法水厂运行中面临的能耗和药耗较高、如何满足水厂新内控指标的问题，开展优化运行研究，以降低水厂的整体能耗、药耗，同时满足新的水厂内控标准。 通过对水厂现有水质及成本分析，原水水质整体稳定，略有下降，出厂水水质较稳定，但部分时段不能满足水厂0.3NTU的内控指标。水厂运行成本主要以药耗成本、电耗成本和水耗成本为主，三种能耗都存在一定的节约空间。 研究了现有条件下水厂的优化运行，在药耗优化方面，最优的运行参数为：投加点为配水井的跌水口、混凝剂种类为聚合氯化铝铁、投加量3 mg/L，年絮凝剂成本下降24%；在电耗优化方面，通过更换口环、修复泵壳、优化机组运行方式、切削叶轮、高位回流供水、环状供水和更换送水泵等方式，供水电单耗从1.032 kwh/m3下降到0.772 kwh/m3，以2016年的供水量计算，节约电力3375400 kwh，合人民币236万元；在水耗优化方面，主要通过优化排泥顺序和排泥频次、优化反冲洗强度来降低水耗，取制水损耗率从11.4%下降到1.6%。 自2017年起，水厂浊度的内控指标提高到0.2 NTU，针对新的内控指标，开展了水厂工艺的优化运行研究，优化后的最优运行参数为：聚合氯化铝铁投加量3.5 mg/L，滤池运行周期52 h，过滤速度6.72 m/h，出厂水可稳定达到0.2NTU的内控指标。

The energy consumption and drug consumption of waterworks are generally higher. Optimization of energy saving and consumption reduction is the main trend of development of water plants in the future. With the improvement of people’s living standards, the quality requirements of water are getting higher and higher. In this case, how to meet the water plant internal control standards is also an important part of the optimal operation of the water plant. This article mainly focuses on the problem of energy consumption and drug consumption in Chongqing Changshou Sino French Water Plant, how to meet the new water plant internal control indicators, and conducts optimization research to reduce the overall energy consumption and drug consumption of the water plant. Through the analysis of the existing water quality and cost of the water plant, the quality of the raw water is generally stable and the water quality of the factory water is relatively stable. However, the internal control index of the 0.3 NTU of the water plant can not be met for some periods. Water plant operating costs are mainly based on drug consumption costs, electricity consumption costs and water consumption costs. There are certain space-savings for all three energy consumptions. The optimized operation of the water plant under the existing conditions was studied. In the optimization of drug consumption, the optimal operating parameters were: the dropping point for the water distribution well was the injection point, the type of coagulant was polyaluminum iron chloride, and the dosage was 3 mg/L, the annual flocculant cost decreased by 24%; in terms of power consumption optimization, through the replacement of the mouth ring, repair pump casing, optimize the unit operation mode, cutting impeller, high return water supply, annular water supply and replace the water pump, etc. The consumption dropped from 1.032 kwh/m3 to 0.772 kwh/m3. Calculating the quantity of water supplied in 2016, the electricity was saved at 3,375,400 kwh, which was equivalent to RMB 2.36 million; in terms of water consumption optimization, the optimization of the order of mud discharge and the frequency of sludge discharge were optimized. The backwash strength reduces the water consumption, and the loss rate of the dewatering water drops from 11.4% to 1.6%. Since 2017, the internal control index of water plant turbidity has been increased by 0.2 NTU. According to the new internal control indicators, the optimal operation of the waterworks process has been studied. The optimized optimal operating parameters are: 3.5 mg/L, the filter operating period is 51 h, the filtration rate is 6.72 m/h, and the factory water can maintain a stable internal control of 0.2 NTU.