Process design of the wastewater treatment 50000 tons per day
General description of the design: The design is the design of sewage treatment of a town, so we should have a certain understanding of urban sewage. Sewage sewage refers to urban residents, organs, schools, hospitals, commercial services and various public facilities and drainage, and allowed into the urban sewage collection system of industrial waste water and rainwater, etc Urban sewage has the characteristics as follows:
(1) a small population, water consumption standard is low, small scale wastewater treatment;
(2) the level of economic development is low, economic bear ability is weak, can choose the suitable technology less;
(3) because of small scale caused by engineering construction costs and operating costs are too high;
(4) maintenance management and technical personnel and management experience of lack.
According to the design of water and wastewater characteristics, through technological analysis and economic comparison, this design uses sequencing batch reactor activated sludge process(SBR)[1].SBR is a sequencing batch activated sludge method abbreviation, it is a kind of intermittent aeration activated sludge wastewater treatment technology operation. Its main feature is the sequencing and batch operation, SBR technology is the core of the SBR reaction pool, the pool sets are, primary sedimentation and biological degradation, two sink functions in a pool, no sludge return system. Especially suitable for intermittent discharge and flow changes in large occasions.