| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a waste water treatment unit at modification or demolition site in which a great shortening of a durable period (durable treating amount) of a microfilter can be expected, and further reduction of dust in sewage, in particular, asbestos content in waste water can be expected. <P>SOLUTION: The waste water treatment unit is used when treating asbestos-containing water generated in a washing process performed prior to modification or demolition of a structure of building materials containing asbestos, and is provided with a water collection means 12, a coarse filter 14, the microfilter 16, and first and second transfer pipes 32, 38 connecting those means. In the coarse filter 14, a filter medium 24 capable of forming a gravity filtering face is mounted on all over the opening of a filter tank 22 to freely attach/detach a filter medium receiver 26. <P>COPYRIGHT: (C)2009,JPO&INPIT |
