摘要
将包埋菌曝气池作为生物预处理单元与常规处理工艺结合,处理NH_4^+-N及有机物超标的河流原水,考察了NH_4^+-N、NO_2^--N和有机物的去除情况。为期12个月的生产性试验结果表明,预处理单元可有效去除NH_4^+-N和NO_2^--N,但出水有机物不达标;经过沉淀、砂滤进一步处理后,出水各项指标均稳定达到《生活饮用水卫生标准》要求。包埋菌生物预处理可以提高常规工艺处理性能,应对原水NH_4^+-N、有机物超标等问题,是一种投资省、运行费用低的技术改造技术。
The excessive NH4＋ - N and organics from raw water was treated by combined of embedded immobilized microorganism pretreatment and conventional process. And the removal of NH4 - N, NO2- - N and organics was investigated. The 12-month pilot test indicated that NH4 - N and NO2- - N could be removed effectively by the pretreatment process, but organics in effluent could not fit the standards. After treatment of sedimentation and sand filtration, all indexes of the effluent could fit the requirement of the Standards for Drinking Water Quality. The embedded immobilized microorganism pretreatment could improve the efficiency of conventional process for removal of excessive NH4＋ - N and organics from raw water. It is a renovation technology with less investment and operational cost. Key words： microorganism pretreatment; embedded immobilized microorganism; conventional process ; NH4＋ - N ： NO2- - N
出处
《供水技术》
2011年第1期1-3,共3页
Water Technology
