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两连管消毒法资料中早有提及,它是用装有漂白粉的筒放在水里,通过水孔渗透,达到长时期利用余氯消毒之目的。1、材料制作取长25～30cm,直径4～5cm,中间带节竹简1个,木塞2个,尼龙绳(或麻绳)若干米。在竹节上钻出相距2cm,直径为3mm 的渗出孔2个,在竹筒一端距中间竹节3～4cm 位置对称钻2个直径为1cm 的透水孔,即制作完成。
As mentioned earlier in the two-tube disinfection data, it is placed in the water with a cartridge containing bleaching powder and permeated through the water hole to achieve the purpose of using residual chlorine for a long time. 1, material production to take long 25 ~ 30cm, diameter 4 ~ 5cm, the middle section with bamboo 1, cork 2, nylon rope (or hemp rope) a few meters. Two holes of 2cm in diameter and 3mm in diameter were drilled on the bamboo section. Two holes of 1cm in diameter were symmetrically drilled at a distance of 3 ~ 4cm from the middle bamboo section at one end of the bamboo tube, that is, the production was completed.