洗井废水对土壤质量及作物的影响

通过测定受洗井废水影响的土壤及作物中的重金属、有机污染物以及作物的生长发育和籽实中的营养成分，并与大庆地区无此类污染的相应作物比较表明：土壤和作物中的石油污染物随洗井废水灌入量的增加而有增高的趋势，这种趋势尤以硫化物为重，而重金属和3，4-苯并芘（BaP）的含量水平均在本地区正常范围内。在试验浓度条件下，洗井废水对作物没有不良影响，各浓度组都有利于作物的生长和营养物质的合成与积累。

The effect of well cleanout sewage upon soil quality and crops

By means of determining the heavy metals and organic pollutants insoil and crops influenced by well cleanout sewage,as well as the nutrition compositionsin growing crops and gathered crop seed,and comparing these with those in other areaswithout this kind of pollution in Daqing region,authors demonstrated that,as the irrigat-ed well cleanout sewage increased,the petroleum pollutants in soil and crops tended toincrease,of which sulfide increased evidently,however the content of heavy metals and3, 4-benzopyrene were both within the normal ranges of this locality. Under conditionsof tested concentrations, the well cleanout sewage didn't effect crops harmfully, everyconcentration group of well cleanout sewage was favorable to the growth of crops and tothe synthesis and accumulation of nutrition material in crops.