The Experimental Study On Sewage Purification Of Baiyang Artificial Reed Wetland

Water is the foundation of people's survival and development,the world is facing serious problems of water shortages. Along with economical development,industrial wastewater and sewage increases day by day ,Water pollution has become an important factor which cause global water resources shortage.In various means of managing water pollution ,artificial wetland processing technology is a new technology ,which is charactered as good effect,low consumption,favors converting into resources and the overall ecological environment improvement ,has caused great attention in domestic and foreign academic circles .The paper according to the life and industrial sewage water pollution characteristics of BaoDing AnXin county ,through dynamic test ,studies the different operation parameters to the decontamination effect influence and the rule on the artificial wetland processing system .The paper bases on the foundation of Baiyang artificial reed wetland wastewater treatment engineering ,makes reed planting density,operating water level and hydraulic retention time as tested parameters , compares the different operation parameters to the decontamination effect influence and the rule on the artificial wetland processing system .Test outdoor under natural conditions is divided into three sections .The first part researches hydraulic retention time of purification effect in different reed planting density ;the second part researches hydraulic retention time of purification effect in different operating water level;the third part researches hydraulic load in purifying effect in different operating water level.Conclusions can be summed up as follows :(1) No matter how reed planting density is ,the remove power of artificial wetland system to the pollutants,such as SS,COD_c,rNH⁺₄-N,TP,strengthens along with the increase of hydraulic retention time ,after maximum ,recedes along with the increase.But in different reed planting density,the effects of hydraulic retention time to the sewage purification of contaminants is different .When the reed planting density is 15 plants/m² ,the effect is biggest.Then is 20 plants/m²,25 plants/m²,30 plants/m².(2) No matter how water running conditions are, the remove power of artificial wetland system to the pollutants,such as SS,COD_cr,NH⁺₄-N,TP,strengthens along with the increase of hydraulic retention time ,after maximum ,recedes along with the increase.But in different water operating conditions ,the effects of hydraulic retention time to the sewage purification of contaminants is different .When the condition is 50cm,the effect is biggest.Then is 45cm,40cm.(3) No matter how water running conditions are,the remove power of artificial wetland system to the pollutants, such as SS,COD_cr,NH⁺₄-N,TP, strengthens along with the increase of hydraulic loading, after maximum, recedes along with the increase. But in different water operating conditions, the effects of hydraulic loading to the sewage purification of contaminants is different. When the condition is 40cm,the effect is biggest.But the affect is similar when the condition is 45cm and 50cm.This paper according to the sewage purification technology study on Baiyang Marsh artificial reed wetland ,proposes the deep processing technology for life and industrial sewage in AnXing country,has a positive meaning in supplementing clean water,securiting quality and restoring wetland for Baiyang Marsh.