| 摘要 |
PURPOSE:To minimize the supply of sewage to a public sewage treatment plant, by classifying sewage generated each home by kind and collecting the same in a state classified by sewage concn. to treat the same. CONSTITUTION:Distribution piping 2 is layed from a bathroom 1a or washing area 1b for discharging low concn. sewage and faced to an outdoor culvert through a contact oxidation tank 3 functioning as a simple water treatment tank provided to the leading end part of said piping 2. The other distribution piping 5 is layed from a kitchen 1c or washing area 1b for discharging high concn. sewage and the flooding port 6a of the spoilage tank 6 connected to a toilet 1d is branched to be connected on the way of the piping 5. The leading end of the piping 5 is faced to an org. water channel 8 coming to outdoor public sewage through a flowmeter 7.
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