[Migration and removal of organic matters in reclaimed wastewater during groundwater recharge].
Artificial groundwater recharge is one of the efficient approaches in mitigating water shortage in China. With laboratory scale soil column system, this paper examined the migration and removal of organic matters in reclaimed wastewater during groundwater recharge. The results showed that after the secondary effluent pretreated by activated carbon was percolated through soil column system, the TOC, UV-254 and BOD5 in the effluent were removed by 44%, 34.36% and 95%, respectively, and the majority of the organic matters was removed in the first 0-0.5 m of soil column. When the TOC concentration of influent was 9-11 mg x L(-1), the variation of TOC concentration with soil depth during recharge followed exponential equation C = 10e (-0.6934h) (R2 = 0.8697). This equation could be used to well predict the TOC concentration of the effluent from soil column system.
Zhao
Qing-Liang
QL
School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. qlzhao@hit.edu.cn
Wang
Li-Na
LN
Xue
Shuang
S
Liu
Zhi-Gang
ZG
You
Shi-Jie
SJ
Wang
Shao-Hua
SH
D014865:Waste Disposal, Fluid / Q000379:methods*; D014872:Water Movements; D014873:Water Pollutants / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply
D014873:Water Pollutants