摘要
血粉原位修复DDTs污染土壤技术具有成本低、环境友好的特点,有良好的应用前景。为了研究血粉原位修复DDTs污染农田土壤过程中对微生物的影响,分析了血粉原位修复DDTs污染土壤过程中土壤酶活性和DDTs降解菌的变化情况,对血粉原位修复DDTs污染过程中土壤微生物的变化情况进行研究。结果表明:添加血粉和葡萄糖可以显著提高过氧化氢酶和转化酶活性,但脲酶活性提高程度不显著。修复1个月后,土壤酶活性达到最大值;然后,随着修复时间的增加,酶活性不断降低。与葡萄糖相比,血粉易于吸附在土壤颗粒上且不溶于水,能够长效地提高土壤中酶活性。添加血粉辅以定期翻土有利于DDTs降解微生物的增殖,同时显著提高了血粉原位修复DDTs污染土壤过程中土壤脲酶、过氧化氢酶、转化酶的活性,有利于土壤中DDTs的降解。
In-situ remediation technology of DDTs contamination soil using blood meal is a cost-effective and eco-friendly remediation method. In order to study its effects on the soil microbial,the degradation rate of DDTs,soil enzyme activities and DDTs degradation bacteria were analyzed,and the effects on soil microbial were studied in in-situ remediation experiment of DDTs contaminated using blood meal. Catalase activity and invertase activity were significantly improved,but urease activity wasn＇t evident in in-situ soil remediation using blood meal or glucose. The soil enzyme activities reached maximum after one month remediation,then began to reduce with the increase of remediation time. Compared with glucose,blood meal was a long-term additive to improve the soil enzyme activities. Because of the increase of soil aeration and oxygen content,remediation technology using blood meal supplemented by plowing the soil once a week could significantly improve the soil enzyme activities and the DDTs degradation rate,and had good effect on degradation of DDTs.
作者
王辉
刘春跃
王英刚
孙丽娜
WANG Hui;LIU Chun-yue;WANG Ying-gang;SUN Li-na(Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education,Shenyang University, Shenyang 110044, China)
出处
《环境工程》
CAS
CSCD
北大核心
2018年第6期169-173,共5页
Environmental Engineering
基金
辽宁省自然科学基金指导计划(20170540656)
沈阳市科学事业费竞争性选择项目"城市生态环境风险管理及其修复技术研究"
国家重点基础研究发展计划项目(973计划)(2014CB441106)
关键词
血粉
土壤酶活性
DDTs降解菌
土壤微生物
blood meal
soil enzyme activities
DDTs degradation bacteria
soil microbial
