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本研究选用三种灌溉水质（原污水、滤出水、清水）、二种土壤（砂壤、轻壤）和三种作物（水稻、黄瓜、油菜）进行了为期二年的对比试验，以观察滤出水灌溉对作物、水生生物（鱼）和地下水的环境影响。试验结果表明：滤出水灌溉不会对作物（含蔬菜）、鱼和地下水产生二次污染，并且水稻籽粒和鱼体中重金属Ｈｇ和Ｃｄ的含量均不超过食品卫生标准，蔬菜中的硝酸盐不会明显积累，地下水中ＮＯ３－Ｎ也不超过地下水质标准。
In this study, three kinds of irrigation water quality (original sewage, filtered water, clear water), two kinds of soil (sandy soil, light soil) and three crops (rice, cucumber and rape) The environmental impact of effluent irrigation on crops, aquatic organisms (fish) and groundwater. The results showed that the filtered water irrigation did not produce secondary pollution on crops (including vegetables), fish and groundwater, and the contents of heavy metals Hg and Cd in rice grains and fish did not exceed the food hygiene standards. The nitrate in vegetables was not Will obviously accumulate, groundwater NO3-N does not exceed the groundwater quality standards.