| With the rapid economic development, domestic sewage, as the basic pollutants in people's daily life has gradually threat to human survival environment. Now, with the new rural and urban communities surrounding the rapid development of urban sewage pipe network coverage far and these areas, separating the old city sewage system, no mixed rain and sewage, waste water can not effectively deal with; Meanwhile, as the population increased, the amount of sewage will continue to increase, resulting in urban, rural and remote areas of natural water bodies polluted, especially in recent years, increased water pollution, largely due to pollution dispersion not in a timely manner caused by sewage treatment.This paper is to study the one for rural, urban residential quarters, hotels, resorts, nursing homes and the airport is designed sewage treatment-anaerobic contact decentralized sewage treatment process combined with the ecology. Shandong Jianzhu University in Water Station water as raw water for different water conditions and operating conditions of a pilot study to investigate the feasibility and effectiveness of this process, while accumulation of some of the relevant process design and operating parameters for the process further refinement and development of theoretical and applied basis.In this paper, the anaerobic contact process on the removal of pollutants in water conditions. Three-dimensional packing with built-in flexible ways, through vaccination starts, stable operation, variable load operation of the testing process, using curing anaerobic biofilm on the SS obviously organic and removal rates were 45% to 55%-60%. By increasing the hydraulic loading, water index and to obtain a stable removal rate, hydraulic retention time optimization control for 12h. In addition, by analyzing the anaerobic reaction mechanism and the measured data, the results show that the anaerobic contact process on the removal of nitrogen and phosphorus poor, have higher trend.After the initial start-up and stable operation of the two-stage testing process, analysis of the modified subsurface flow constructed wetlands to remove pollutants in water conditions. Start-up phase by controlling the level of wetland change, promoting the development of reed growth, the vacancy of the night, so that oxygen capacity of wetland restoration. Stable operation phase CODcr 50% to 60% removal, SS removal rate of 76%-81%, the results show that the packing of different gradation, SS sieve retention and microbial degradation is the removal of the main SS reasons. Lower ammonia removal, phosphorus removal efficiency of 35% to 45%. As eco-processing technology, has modified the natural subsurface flow wetland ecological character, by the environment and the climate is very clear, after rainfall, water indicators declined.Combined Processes CODcr and SS removal rate of 70% to 85%,95% to 98.5% with excellent results. Nitrogen and phosphorous removal mainly occurred in the wetland unit. Combined process optimization through the combination of modular units, the demand for different dispersed sources of pollution, flexible settings, on the less demanding areas of anaerobic contact element can be used directly to meet the requirements; on the demanding areas, increase the modified subsurface flow wetland unit enhanced treatment effect. The overall process of low cost, can be realized without power to run; results show that the combined process has more applicability and applied.
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