本文评估了废过滤器反冲洗水（SFBW）的特性，并确定了处理策略，以便在不影响原水水质的情况下回收SFBW。对25家具有代表性的水处理厂进行了调查，以比较原水和SFBWs的微生物、物理和化学水质的差异。用免疫荧光法（IFA）分析贾第虫和隐孢子虫。用免疫磁性分离（IMS）浓缩样品后，用IFA和整合细胞培养PCR（CC-PCR）方法分析隐孢子虫。包括14个参考文献、表格和图表。

This paper evaluates characteristics of spent filter backwash water (SFBW) and identifies treatment strategies so that SFBW can be recycled without impacting raw water quality. A survey of 25 representative water treatment plants was conducted to compare differences in microbial, physical and chemical water quality of raw waters and SFBWs. Giardia and Cryptosporidium were analyzed by the immunofluorescence assay (IFA) method. Cryptosporidium was also analyzed by the IFA and integrated cell culture-PCR (CC-PCR) methods after concentrating the sample by immunomagnetic separation (IMS). Includes 14 references, tables, figures.