【摘要】 结合水厂现有工艺,采用常规—超滤膜工艺处理南方河网地区的湖泊水,以解决现行常规处理工艺出水中细菌、藻类和有机物超标以及微生物泄漏等问题。研究表明:在砂滤出水中加入适量的NaClO作为杀菌剂能够减缓跨膜压差的增长速度,稳定超滤膜运行;常规—超滤工艺出水的浊度、CODMn和DOC平均值分别为0.07NTU、2.85mg/L、3.95mg/L,藻类平均数量为2.79×104个/L,细菌未检出。更多还原

【Abstract】 In order to solve the problems such as over standard of bacteria,algae and organic matters and microbial leakage in treated water by conventional processes,the conventional process/ultrafiltration membrane technology was used to treat lake water in river network area in Southern China.The results show that adding NaClO as bactericide into the treated water by sand filtration can alleviate the increase of transmembrane pressure(TMP)and stabilize the operation of ultrafiltration membrane.The average turbidity,CODMn,DOC and algae in treated water by the conventional/ultrafiltration membrane process are 0.07 NTU,2.85 mg/L,3.95 mg/L and 2.79×104 cells/L,and no bacteria are detected.更多还原