北方水库水源净水厂剑水蚤应急处置对策  

Solution of Emergency Measures of Cyclops in North Reservoir Raw Water for WTP

作　　者：袁雅姝[1] 张丽伟 马兴冠[1] 王薇 王东 YUAN Yashu;ZHANG Liwei;MA Xingguan;WANG Wei;WANG Dong(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang110168,China;Shenyang Water Group Co.,Ltd.,Shenyang110168,China;Haicheng Water Group Co.,Ltd.,Anshan114200,China)

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]沈阳水务集团有限公司,辽宁沈阳110168 [3]海城市水务集团有限公司,辽宁鞍山114200

出　　处：《净水技术》2022年第8期41-46,139,共7页Water Purification Technology

基　　金：国家水体污染控制与治理科技重大专项(2018ZX07601001)。

摘　　要：为了解决北方寒冷地区春夏交替及秋季时节水库水源剑水蚤大量孳生问题,对北方某水厂进行运行调试,提出一系列改进措施。研究确定准确合适的预氧化剂投加量,保障滤后水的余氯质量浓度为0.05 mg/L;缩短沉淀周期;增加物理拦截措施,在水厂进水口的稳压井处、沉淀池出水集水槽处加装100目或180目滤袋;根据剑水蚤卵化周期调整过滤时间≤24 h,调整滤料粒径级配(<0.5 mm)。结果表明,次氯酸钠投加量为1.0~2.0 mg/L,及时清理反应池、沉淀池,能有效防止剑水蚤富集;调整水厂的运行后,降低水蚤穿透滤层的风险。通过一系列调试措施,水蚤孳生问题得到有效控制,保证供水水质安全。In order to solve the problem of large numbers of Cyclops in the reservoir water source during the spring and summer in the northern cold region and autumn, the commissioning of the operation of a northern water treatment plant(WTP) was carried out. And a series of improvement measures were proposed. In this study, the accurate and appropriate pre-oxidant dosage was determined to ensure that the residual chlorine of the filtered water was 0.05 mg/L, the sedimentation period was shortened, and physical interception measures were added. Install 100-mesh or 180-mesh filter bags at the pressure-stabilizing well at the water inlet of WTP and at the effluent collection tank of the sedimentation tank. Adjust the filter time≤24 h according to the egg life cycle of Cyclops, and adjust the particle size gradation of the filter material(<0.5 mm). Results showed that adding sodium hypochlorite 1.0~2.0 mg/L, and cleaning the reaction tank and sedimentation tank in time could effectively prevent the concentration of Cyclops. After adjusting the operation of WTP, the risk of Cyclops penetrating the filter layer was reduced. Through a series of debugging measures, the breeding problem of Cyclops has been effectively controlled and the safety of water supply is guaranteed.

关 键 词：剑水蚤 调试 预氧化 沉淀周期 物理拦截 过滤 水厂 

分 类 号：TU991[建筑科学—市政工程]