| 摘要 |
<p>A waste water treatment equipment adapted to treat, with high removal performance at all times, waste water drained from various sources is provided with a pretreatment device in which chemical is supplied to a treatment tank so as to accelerate decomposition of the solid waste left after crushing garbage by fermentation and putrefaction, and digestion of the solid wastes and water pollution materials by anaerobic bacteria. The sewage pretreated in the pretreatment device is introduced in a sewage treatment device in which sewage is caused to flow in a plurality of sewage treatment tanks sequentially in order, and the pollution materials such as BOD, COD, etc. in the sewage are subject to oxidation decomposition and removal by activated sludge process beds of specific configuration in which arrangement of activated sludge varies for each tank. A settling tank and a disinfecting tank are further provided.</p> |
