CAJ | 학술논문

湿地系统处理重金属废水后,系统截留金属主要被固定在基质填料层,占98%以上。基质的浸渍和冲淋实验表明,以物理吸附形式存在的可交换态重金属铜占截留总量的1.07%,说明系统内重金属得到很好的固定。但是在pH小于3.3的情况下,固定的金属铜和铅比较容易被再次溶出,发生污染转移。
습지계통처리중금속폐수후,계통절류금속주요피고정재기질전료층,점98%이상。기질적침지화충림실험표명,이물리흡부형식존재적가교환태중금속동점절류총량적1.07%,설명계통내중금속득도흔호적고정。단시재pH소우3.3적정황하,고정적금속동화연비교용역피재차용출,발생오염전이。
More than 98% of the three heavy metals remained in the system were in the substrate filler.The result of the dipping and flushing experiment of the substrate treated by heavy metals wastewater showed that the heavy metals remained in the systems were immobilized well.The exchangeable heavy metal copper in physical absorption form accounting for 1.07% of total retention.However,under the condition of pH ≤ 3.3,the heavy metals immobilized,such as copper and lead,were easy to be released,and pollution transfer occurred.