Performance of Integrated Household Constructed Wetland for Rural Domestic Wastewater Treatment
Due to the likely strengthening of environmental legislation in recent years,the issues of drinking water security and wastewater treatment in rural areas have increasingly become an concern for both the researchers and the government officials.On-site purification systems are good options to reduce the high cost of sewage disposal in China rural areas.An integrated household constructed wetland system (IHCWS) was developed to treat the wastewater in rural villages in north China.The system comprises two-stage sedimentation tanks with capacities of 0.6 and 0.4 m3,respectively,and a vertical flow constructed sand bed with a section area of 1.2 m2 and a depth of 1.0 m.It had a significant effect on the thermal insulation with a 0.5 m sawdust layer covering the system to make the temperature in constructed sand bed keep above 6 ℃,even in the lowest climate temperature-15 ℃.The average removal efficiency for COD,BOD5,TSS,turbidity,NH3-N,TN,TP were 93.0%,96.0%,97.0%,89.6%,88.4%,75.4% and 87.7%,respectively.The system with no energy input in operation has performed well for 10 months without hydraulic failure and clogging.The result indicates that the household integrated constructed wetland system is feasible for wastewater purification in the rural areas of north China.
Constructed wetland Rural areas Wastewater treatment
Shubiao WU Xu ZHAI Jing HU Renjie DONG
Key Laboratory of Agricultural Engineering in Structure and Environment,College of Water Conservancy & Civil Engineering,China Agricultural University,Beijing 100083,P.R.China
国际会议
The 2nd China-Japan Graduate Student Forum -- Life, Environment and Energy (第二届中日研究生论坛--生命,环境与能源)
北京
英文
239-246
2009-09-24（万方平台首次上网日期，不代表论文的发表时间）