Structural-filler-reinforced rural domestic and catering wastewater treatment plant and method

Abstract

The invention discloses a structural-filler-reinforced rural domestic and catering wastewater treatment plant and method. The wastewater treatment plant comprises an oil removal tank, an anaerobic tank, an anoxic tank, an aerobic tank, an aerobic reflux tank and a precipitation tank which are sequentially connected, wherein the oil removal tank is provided with a water inlet; a suspended oil absorption filler is arranged in the oil removal tank; a biological filler is respectively arranged in the anaerobic tank, anoxic tank and aerobic tank; a guide pipe is respectively arranged between the oil removal tank and anaerobic tank, and between the anoxic tank and aerobic tank; an aeration branch pipe in the aerobic reflux tank is provided with an aeration head; an ascending pipe is arranged above the aeration head; the side wall of the ascending pipe body is connected with the anoxic tank through a return pipe; and a gas stripping reflux mode is adopted to implement wastewater reflux. An integrated treatment technique is adopted in the entire allocation, has the advantages of simple construction and investment saving, has higher treatment capacity, can remove more than 75% of total nitrogen and more than 65% of total phosphorus and degrade more than 90% of COD (chemical oxygen demand), and is very suitable for distributed treatment of rural domestic wastewater.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a rural life and catering wastewater treatment device and method thereof reinforced by structural fillers. Background technique [0002] In recent years, with the rapid improvement of the economy and residents' living standards in rural areas of our country, the discharge of rural sewage has continued to increase. Most rural areas are generally far away from urban sewage pipe networks, and the discharged sewage is directly discharged into adjacent water bodies after being treated in septic tanks. The water environment has been polluted, especially nitrogen and phosphorus pollution has seriously caused eutrophication of the water body. [0003] At present, rural domestic sewage treatment technologies include: land treatment system, artificial wetland sewage treatment system, biological contact oxidation tank, ecological pond sewage treatment system, soil infiltration sewage treatment ...

AI Technical Summary

Problems solved by technology

The main problem is that the installation of the degreasing tank will affect the subsequent carbon-nitrogen ratio and thus affect the removal effect, so that the integrated device does not have a special degreasing tank for the characteristics of more oil in rural domestic sewage, and the COD removal effect is not ideal; Moreover, the efficiency of biological treatment is low, especially the removal rate of nitrogen and phosphorus is very low, and nitrogen and phosphorus pollution is the main cause of water eutrophication

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