Patent ID: 8647502

Claim:
A sewage reuse system, comprising: (a) a plurality of sewage treatment apparatuses, each comprising: a membrane separation active-sludge treating section which performs a biological treatment on a part of sewage, which is introduced by a water introducing section while flowing through a sewer trunk line, to generate first treated sewage; a membrane highly treating section which performs a membrane high treatment on said first treated sewage to generate second treated sewage; a membrane treating tank which stores a part of said first treated sewage; a membrane highly treating tank which stores said second treated sewage; water level sensors which respectively measure water level of said membrane treating tank and said membrane highly treating tank; and a power-control section which controls water introducing quantity of said water introducing section on the basis of the water level data measured by said water level sensors, (b) wherein said plurality of sewage treatment apparatuses are distributed in an area where there is a sewer trunk line, and (c) further comprising: a supply section which connects all said membrane treating tanks located in respective said sewage treatment apparatuses with each other, as well as connects all said membrane highly treating tanks located in respective said sewage treatment apparatuses with each other, a communication section which transmits driving information of respective said sewage treatment apparatus; and a central control section which supplies reuse water via said supply section to said membrane treating tank located in an area where reuse water is in shortage, supplies reuse water via said supply section to said membrane highly treating tank located in an area where reuse water is in shortage, and controls water storing quantity of each membrane treating tank and/or each membrane highly treating tank located in respective said sewage treatment apparatuses, on the basis of demand for reuse water and said driving information transmitted by said communication section.