麦草秸秆浸泡过程中污染物释放过程研究  

Research on the Release Process of Pollutants During the Soaking of Wheat Straw

作　　者：杨道林 卞为林 徐汝超 王晴晴 王林刚 蒋昊 YANG Dao-lin;BIAN Wei-lin;XV Ru-chao;WANG Qing-qing;WANG Lin-gang;JIANG Hao(Yancheng Funing Ecological Environment Monitoring Station,Yancheng Jiangsu 224499,China;Nanjing University Yancheng Institute of Environmental Technology and Engineering,Yancheng Jiangsu 224499,China;Research Institute of Water Environment Engineering Technology,Jiangsu Institute of Industrial Technology,Yancheng Jiangsu 224499,China)

机构地区：[1]盐城市阜宁生态环境监测站,江苏盐城224499 [2]南京大学盐城环保技术与工程研究院,江苏盐城224000 [3]江苏省产业技术研究院水环境工程技术研究所,江苏盐城224000

出　　处：《辽宁化工》2023年第2期194-199,207,共7页Liaoning Chemical Industry

摘　　要：以建湖县、涟水县和阜宁县农田地块为研究对象,研究了不同地区、不同环境下麦草秸秆在浸泡过程中污染物的释放情况,通过检测p H、COD_(Mn)、总氮、总磷、铁和锰含量等水质指标来动态监测污染物的含量变化。试验结果表明:4个地区的麦草秸秆在浸泡过程中污染物释放情况具有共性,秸秆浸出液的p H降低、COD_(Mn)升高,水体中的总氮和Fe含量缓慢增加;同时各个地块又具有各自的特点,建湖田块的秸秆浸出液COD_(Mn)高达400 mg·L^(-1),阜宁田块的秸秆浸出液p H低至4.95。在秸秆与土壤同时存在的环境下,水体的锰含量显著增高。Taking the farmland plots of Jianhu county,Lianshui county and Funing county as the research objects,the release of pollutants during the soaking process of wheat straw in different regions and different environments was studied.By detecting pH,COD_(Mn),total nitrogen,total phosphorus,the change of water quality indicators such as iron and manganese content was dynamically monitored in the content of pollutants.The test results showed that the release of pollutants during the soaking process of wheat straw in the four regions was common,the pH of the straw leachate decreased,the COD_(Mn)increased,and the total nitrogen and Fe content in the water increased slowly;at the same time,each plot had its own characteristics.Characteristic,the COD_(Mn)of straw leachate from Jianhu field was as high as 400 mg·L^(-1),and the pH of straw leachate from Funing field was as low as 4.95.In the environment where straw and soil coexisted,the manganese content in the water body increased significantly.

关 键 词：不同地区 麦草还田 污染物释放 PH COD_(Mn) 锰 

分 类 号：X701[环境科学与工程—环境工程]