Ecotoxicity assessment of artificial groundwater recharge with reclaimed water: a pilot-scale study.
A demonstration of artificial groundwater recharge with tertiary effluent was evaluated using a set of bioassays (acute toxicity to Daphnia, genotoxicity, estrogenic and antiestrogenic toxicity). Around 95 % genotoxicity and 53 % antiestrogenicity were removed from the feed water by ozonation, whereas significant reduction of acute toxicity to Daphnia magna was achieved during a 3 days vadose soil treatment. The toxicity was further removed to the same level as the local groundwater during a 20 days aquifer soil treatment. The pilot study has shown that ozonation and soil treatments can improve the quality of municipal wastewater treatment plant effluents for possible groundwater recharge purposes.
Laboratory of Environmental Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, People's Republic of China, zhangxue01@gmail.com.
Xue
X
Zhang
Xuan
X
Zhao
D000818:Animals; D003621:Daphnia; D060587:Groundwater / Q000737:chemistry*; D014865:Waste Disposal, Fluid; D062065:Wastewater / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000633:toxicity*; D018508:Water Purification
D062065:Wastewater; D014874:Water Pollutants, Chemical