供水厂水质超标问题诊断与调试运行思路  

Analysis on Reasons of Standard-exceeding of Water Quality in Waterworks and Its Solutions

作　　者：门绚[1] 李冬[1] 蔡言安[1] 曾辉平[1] 李元斌 孙海林 李树奇 张杰[1,3] 

机构地区：[1]北京工业大学水质科学与水环境恢复工程北京市重点实验室,北京100124 [2]呼伦贝尔市海拉尔区自来水公司,内蒙古呼伦贝尔021000 [3]哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090

出　　处：《中国给水排水》2015年第11期1-4,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51222807);教育部新世纪优秀人才支持计划项目(NCET-10-0008)

摘　　要：针对供水厂氧化除锰难的问题进行诊断分析并提出了相应的调试运行方案。水厂前期运行数据表明，对于3—4℃的低温水质，以高锰酸钾作为氧化剂不但不能有效氧化锰，反而引起水中锰浓度超标。调试运行方案以液氯为氧化剂，投氯点设于气浮池之后、滤池进水总管之上。结果表明，氯化作用可实现对铁、锰、氨氮的同步去除；运行过程中保证气浮池的正常工作可有效避免消毒副产物的产生。Reasons of standard-exceeding of water quality in manganese removal were investigated based on the operational data of a waterworks. The analytical results indicated that potassium permanga- nate as a stronger oxidant failed to achieve manganese oxidation in low-temperature groundwater （3 to 4 ℃）, instead, caused a higher manganese level in the produced water than that in raw water. The solu- tion was using liquid chlorine as oxidant, and the chlorine was dosed at the inlet of the filter following the air floatation tank. The results showed that the chlorination could achieve the simultaneous removal of i- ron, manganese and ammonia nitrogen. The normal operation of the air floatation tank could effectively a- void the generation of disinfection by-products in the chlorination process.

关 键 词：低温地下水 除铁除锰 高锰酸钾氧化 折点氯化 

分 类 号：TU991.2[建筑科学—市政工程]