摘要
本文采用高效澄清与叠螺脱水组合工艺对自来水厂排泥水进行处理，对该工艺试运行期间，出泥含水率达不到设计目标80%情况下，调查分析不达标原因，并制定一些列改进措施。结果表明，通过延长前端排泥水进水混合时间，更换定制螺旋轴，调整浓缩段环片间隙，选择匹配度良好的絮凝剂（PAM）阴阳离子药剂，调整出泥压板间隙，调低叠螺机运行频率，增加投药量等一系列措施能降低排泥水处理后出泥的含水率，使污泥含水率稳定达标，证实本研究在自来水厂排泥水处理应用中具有较强的推广价值。
关键词： 自来水厂；排泥水；污泥含水率；改进措施
Abstract
In this paper, the combination process of high efficiency clarification and snail dewatering is used to treat the sludge discharge water of waterworks. During the trial operation of the process, the water content of sludge discharge is less than 80% of the design target, and the causes are investigated and analyzed, and a series of improvement measures are made. The results showed that a series of measures, such as extending the mixing time of the front-end sludge discharge water, changing the customized spiral shaft, adjusting the gap between the ring pieces of the enrichment section, choosing the PAM with good matching degree, adjusting the gap between the mud discharge plate, reducing the operation frequency of the screw stack machine, increasing the dosage, etc. could reduce the water content of the sludge discharge water treatment and make the sludge water content reach the standard stably. It is proved that this study has strong popularization value in the application of sludge discharge water treatment in waterworks.
Key words： water works; sludge water; water content of sludge; improvement measures
参考文献 References
[1] 童祯恭,童承乾,冯治华,等.净水厂排泥水及其污泥的处置[J].华东交通大学学报,2018,32(6):88-95.
[2] 杨玉军,钱龙,杨金明,等.滇中某自来水厂排泥水的处理[J].城市建设理论研究(电子版),2020(11):46-47.
[3] 张念琦.上海市某水厂排泥水处理应急工程设计[J].净水技术,2022,41(1):140-146.
[4] 杨珊珊,韩国胜.某自来水厂排泥水处理中试设备试验研究[J].城市建设理论研究,2020(06):56-57.
[5] 上海市环境保护局,上海市质量技术监督局.污水综合排放标准:DB 31/199-2018[S].北京:中国标准出版社,2007.
[6] 陈煜伟,何伟.加载絮凝对微污染水的治理效果及应用前景[J].环境工程,2016,34(s1):58-61.
[7] 范金辉,周卫东,杨协栋,等.Fe2+和PMS同步混凝氧化预处理对超滤净化排泥水的影响[J].水资源保护,2021,37(2):148-152.
[8] 顾健.高效组合澄清系统在某雨水泵站污染物削减中的应用[J].净水技术.2019,38(s2):102-105.
[9] 郭文娟,郄燕秋,等.净水厂排泥水处理工艺现状及发展方向.给水排水.2013.Vol39（8）:35-40.
[10] 中华人民共和国工业和信息化部.叠螺式污泥脱水机:JB/T 12578-2015.北京:机械工业出版社,2015.