Rural Sewage Pipes Buried Experimental Study Of Anaerobic Biological Treatment

In recent years, China’s economy has achieved rapid development, people’s living standards have been greatly improved, Rural sewage indiscriminate discharge of untreated water caused serious pollution, caused great damage to the rural living environment. Sewage vast rural areas with a low concentration of point source dispersion characteristics, so choose a low investment costs, operating costs, simple operation, and maintenance of good water quality craftsmanship governance necessary. In this paper, based on the analysis of China’s rural sewage discharge, decided to adopt a new processing technology-rural sewage pipes buried energy consumption anaerobic biological treatment technology of Shanxi Province rural sewage treatment. The technology has low construction cost, not an area of the table, without expert management, spending no energy, no day-to-day expenses, less secondary pollution, the treatment effect and other characteristic, is ideal for a weak economic foundation, sewage dispersed and less, the lack of professional technical staff of small and medium-sized towns and rural sewage treatment project, the National Rural sewage treatment has a good reference. Rural sewage pipes buried energy consumption anaerobic biological treatment by anaerobic biofilm principle designed for testing small devices, internal pipeline filled with three-dimensional strip packing equipment for processing, and a three-month consecutive trials. It was found, anaerobic biofilm reactor at room temperature using low concentrations of sewage is entirely feasible to start after vaccination anaerobic activated sludge based on the start of the month, cultivate a good performance of the biofilm, tired biofilm reactor treating low concentration sewage, gas production and excess sludge production is very small. Test results showed that after two months of normal operation after a successful start:When the hydraulic retention time of18hours, the reactor effluent CODcr, BOD5and SS average concentration for the57mg/L and16mg/L and14mg/L, the removal rate70.4%,81.8%and80.6%. The treatment effect of urban sewage treatment plant pollutant discharge standard level B standard. Hydraulic retention time is extended to36hours, CODcr, BOD5and SS removal efficiency has been further enhanced, respectively,80.0%,88.9%and85.2%, respectively. Anaerobic reactor removal of ammonia nitrogen, TN and TP, when the hydraulic retention time of18hours the water NH4+in about17mg/L, the removal rate of19.4%, were out of the water, the average concentration of TN and TP27.0mg/L and1.9mg/L, the average removal rate of the water column TN and TP were21.6%and18.9%.