Advanced treatment system and method for foul water of middle.small size village by using a media

摘要

The present invention relates to one. Small village sewer system and treatment advanced treatment method using the median, The organic material in the wastewater treatment process of a conventional unit constant concentration is possible, but there is a problem in that the removal of nitrogen and phosphorus (TP) well-devised operating costs consuming. ; In the present invention water tank 110, between the flow rate-adjusting tank 120, an aeration tank 130, the sedimentation tank 140, a filtration tank 150, to configure the processing system of the O / wastewater to package and discharge tank 160, water tank 110 and the flow-adjusting tank 120, medium 172 to install the microbial growth tank 170 is deposited on and between the flow rate-adjusting tank 120 and an aeration tank (130) and install the anaerobic tank 180, the anoxic tank 190, a medium in the aeration tank (130) (132) was laminated, an aeration tank 130 and settling tank 140 between the installation and the material supplied to the circulation water tank 200 to the anoxic treatment portion 190, the filtration tank 150 to a medium for culturing the microorganism 152, and as the filling of the filtration tank to be conveyed to backwash (150) to the aeration tank 130, the invention is by layering a large amount of microbial growth in the medium tank and the aeration tank and a filtration tank to give change the water inlet flow quantity change and water There will be a stable growth culturable microorganisms Nitrogen and phosphorous removal efficiency is excellent because the high processing costs less to change the entire system.