南方地区农村集中式供水水源隐孢子虫与贾第鞭毛虫调查

Survey on Cryptosporidium and Giardia in rural central water Supply of Southern China

目的了解我国南方3省农村集中式供水水源隐孢子虫与贾第鞭毛虫污染现状。方法采用《生活饮用水标准检验方法微生物指标》(GB/T 5750.12)中Filta-Max Xprss方法对水样进行检测,并调查水源地和水厂的基本情况。结果所调查的水源水隐孢子虫卵囊与贾第鞭毛虫孢囊检出率分别为23.33%和33.33%,部分水源地缺乏防护措施或措施不完善,所调查的农村水厂多采用传统水处理工艺,管理人员对"两虫"来源的相关知识不甚了解。结论调查地区以地表水作为水源,"两虫"检出率较高,提示应该进一步加强水源地防护,完善水厂水处理工艺,加强水厂管理人员对"两虫"相关知识的培训。

Objective To describe the status of the drinking water polluted by Cryptosporidium and Giardia in the throe provinces of Southern China. Methods Filta-Max Xprss method of Standard examination methods for drinking waterMicrobiological parameters was used for detecting, and the general information of water source areas and water plants were surveyed. Results The positive rate of Cryptosporidium and Giardia of the water we detected were 23.33% and 33.33% respectively. Some of the water source areas had no protection or with un-qualified water treatment facilities. Most of the plants used traditional water treatment processes, and the workers knew little about Cryptosporidium and Giardia contamination. Conclusions The investigated districts which used surface water as source had the high rate of Cryptosporidium and Giardia contamination. Water source protection and water treatment processes should be strengthened and improved. Furthernro, the managerial personnel of the water plants should be trained to know moro about Cryptosporidium and Giardia.