在底端封闭的聚乙烯管 (长 12 8mm ,内径 15mm ,管盖下方管壁有直径 1 5mm释氯孔 )内装2 5片漂白粉精片 (36 0mg/片 ,主要成分为次氯酸钙 ) ,悬挂于手压式抽水井井筒内。对悬挂该管 30min的36口井 ,采水样检测 ,由释氯孔释入水中的有效氯可使其全部达到消毒标准 (细菌总数 <10 0cfu/ml,大肠菌群数 <3个 /L) ;而消毒前仅 1口井水的细菌总数未超标 ,其余均超标 The bottom of the closed polyethylene tube (length 12 8mm, an inner diameter of 15mm, the tube wall has a diameter of 1 5mm chlorine hole) 25 pieces of bleach refined tablets (36 0mg / tablet, the main component of calcium hypochlorite) , Hanging in the hand-pressure pumping well bore. 36 wells suspended the tube 30min, water samples detected by the release of chlorine chlorine into the water can make all of its disinfection standards (total bacteria <10 0 cfu / ml, coliform bacteria <3 / L ); While only a single well before disinfection of bacteria did not exceed the total number of bacteria, the rest were exceeded