由于处理工艺和运行成本的限制, 再生水中仍残留一定数量的污染物, 长期使用必然会对受纳区的土壤和地 下水环境产生一定影响。通过文献调研和数据统计, 获得了再生水受纳区土壤和地下水中有机污染物、重金属、营 养物质、盐度、pH 值和微生物等的种类和浓度, 并结合环境统计年报、土壤环境和地下水质量标准, 分析和讨论了 再生水利用对受纳区土壤和地下水环境的影响。结果表明, 再生水多来自于生活污水, 其受纳区域介质中药物及个 人护理品污染和盐度增加对土壤和地下水环境影响较大, 再生水中其他污染物则影响不大。为了提高再生水利用 安全性, 应根据受纳区的使用功能, 制定出污染物监测方案、应急预案和管理措施。

There ar e residual contaminants in the reclaimed w ater due to the limitatio ns o f w astewater treatment techno log y and operating co sts. The quality o f the so il and gr oundw at er in the reclaimed w ater usag e areas is bo und to deterior ate in the long term. I n this r esear ch, we collected the t ypes and co ncentrat ions of contaminants in these areas thr ough liter atur e investig atio n and data stat istics. We analyzed the effects of or ganic po llut ants ( po ly cyclic ar omatic hydro carbons, persistent o rg anic pollu2 tants, pharmaceuticals and personal car e pr oducts ( PPCPs) and endocrine disrupting chemicals) , heavy metals, nut rients, salini2 ty , pH , and micro bes in reclaimed wat er o n soil and g ro undwater envir onment. Since most reclaimed water is from domestic sew2 ag e, att ention should be paid to the pollutio n of the PPCPs and salinity . We sugg est adopting contaminant mo nitoring pr og rams, emer gency plans, and relev ant management measur es t o ensure the safety o f reclaimed w ater usage.

国家自然科学基金( 51479003) ; 中央级公益性科研院所基本科研业务费专项资金项目( 201729058) ; 北京市自然科学基金 (8164066)