REPAIRING METHOD FOR BIOREACTION REGION IN BIOTREATMENT EQUIPMENT FOR SEWAGE

摘要

PROBLEM TO BE SOLVED: To provide a repairing method for a bioreaction region for a biotreatment equipment for sewage which is not only capable of repairing the bioreaction region in parallel with the biotreatment of waste water but is capable of evading the degradation in the biotreatment efficiency of the waste water and maintaining an assured water quality of treated water as a high degree of the biotreatment is easily performed. SOLUTION: A bypass passage 20 for connecting a fore treating vessel 51 and a post treating vessel 57 by bypassing a bioreaction chamber 52 and a settling tank 64 is formed. A membrane separating and sewage treating equipment 1 of a mobile immersion type of a unit system which can be loaded on vehicles and can be conveyed by the same is interposed in this bypass passage 20, and thereafter while the waste water 60 for the biotreatment (water 6 to be treated) is subjected to the biotreatment in the state of shutting off the flow from the fore treating vessel 51 to the bioreaction chamber 52, the bioreaction chamber 52 of the biotreatment equipment 50 is subjected to repairing, such as rebuilding, reforming and repairing in parallel to the biotreatment.