| 摘要 |
PROBLEM TO BE SOLVED: To realize a combined sewage treatment tank by effectively utilizing existing single sewage treatment tank. SOLUTION: This combined sewage treatment tank is constituted by providing a single sewage treatment tank having a first anaerobic treatment section, a second anaerobic treatment section and a disinfection chamber, a combined treatment system having a biological filter chamber and a settling chamber, and the piping for connecting the point just before the disinfection chamber of the single type private sewage treatment system and the inflow port of the combined type collection treatment system, for connecting the outflow port of the combined type collection treatment system and the disinfection chamber of the single type private sewage treatment system and for flowing night soil and kitchen waste water into the port of the single sewage treatment tank.
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