| 摘要 |
PROBLEM TO BE SOLVED: To obtain a combined treatment system which realizes a combined sewage treatment tank by effectively utilizing an existing single sewage treatment tank. SOLUTION: The combined treatment system 20 having a biological filter chamber 22 and a disinfection chamber 24 is connected to the downstream side of the single sewage treatment tank 1 having a first anaerobic treatment chamber 12 and a second anaerobic treatment chamber 13, by which the admission of night soil, kitchen waste water, laundering waste water, etc. into an inflow port 2 of the single sewage treatment tank 1 and the combined type collection treatment thereof are made possible.
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