Research on Optimization Model of Rural Domestic Sewage Treatment Based on Control Unit

Most of the current research on rural domestic sewage is dispersal, while the research on unitized centralized domestic sewage treatment is relatively rare. The paper uses the bio-ecological combination technology to combine the constructed wetland as the control unit to carry out the ecological process ABR composite artificial optimization model research. Firstly, phosphorus removal research on five kinds of matrix fillers such as anthracite, coal slag, ceramicists, sandstone and brick slag is carried out, and the sewage at various levels is studied by adjusting the low, medium and high influenced pollutant loads and controlling the hydraulic retention time of pollutants. The processing efficiency of the processing unit during the filming period and the running period. Finally, the surface flow constructed wetland and the subsurface flow constructed wetland were set up as the secondary treatment unit for rural sewage treatment. The deep identification and extemporization of the sewage was carried out, and finally the effluent quality reached the first-level indicator of the Pollutant Discharge Standard of Urban Sewage Treatment Plant.