Research on the Purification Effect and Nitrogen and Phosphorus Resource Utilization of Rural Domestic Wastewater in Guangxi by Combination Process
This study is based on the current situation of domestic sewage in rural areas of Guangxi.A"biological treatment device+ecological pond+artificial wetland corridor"biological ecological combination process is constructed to treat domestic sewage in Wubaitang Village,Xing'an County,Guilin City,Guangxi Province.The main research results are as follows:The combined process has a certain seasonal effect on the removal of pollutants.The average removal rates of COD,NH3-N,TN,and TP by the summer combined process were 71.27%,32.64%,74.89%,and 78.62%,while it in winter were 65.82%,19.69%,63.53%,and 65.39%,respectively.The overall effluent quality is good and basically meets the discharge level requirements of Class A standard.After being treated by biological treatment devices and ecological ponds,the regenerated water still contains a certain amount of nitrogen and phosphorus nutrients.The economic benefits and safe edible advantages of irrigating taro and water bamboo are significant.The recycled water irrigation model for vegetables can not only meet the water requirements for plant growth,save sewage treatment costs,but also save 16455 yuan/hm2 of nitrogen and phosphorus fertilizer application fees annually.
Bioecological combination processRural domestic sewageResource utilizationAnalysis of vegetable food safety
万方数据
维普
