7Simon T. Reuse of effluent water-Benefits and risks[J]. Agricultural Water Management, 2006, 80( 1 - 3) : 147 - 159.
8Liu W H, Zhao J Z, Ouyang Z Y, et al. Impacts of sewage irrigation on heavy metal distribution and contamination in Beijing,China[J]. Environment International, 2005, 31:805 - 812.
9Anderson A D, Heryford A G, Sarisky J P, et al. A waterbome outbreak of Norwalk-like virus among snowmobilers-Wyominw, 2001[J]. Journal of Infectious Diseases, 2003, 187:303- 306.
10Singh K P, Mohan D, Sinha S, et al. Impact assessment of treated/untreated wastewater toxicants discharged by sewage treatment plants on health, agricultural, and environmental quality in the wastewater disposal area[J]. Chemosphere, 2004, 55:227- 255.
