产漆酶血红密孔菌对城市污泥堆肥过程中有机氯农药的降解效应

发布时间：2019-05-23 12:40

【摘要】：为降低城市污泥堆肥中有机氯农药对环境的影响,实验室通过外加热源提供堆肥环境温度条件,并在不同堆料中接种不同剂量的产漆酶血红密孔菌,研究不同处理下产漆酶血红密孔菌对污泥中HCH、DDT和HCB的降解性能的影响。结果表明,供试血红密孔菌对3种有机氯农药的降解有明显的促进作用。未接种菌剂情况下,高温堆肥本身对HCH、DDT和HCB的降解率分别为51.1%、43.6%和63.4%;接种1%菌剂时,HCH、DDT和HCB比未接种堆料降解率分别提高了16.2%、34.6%和21.7%;接种3%菌剂时,HCH、DDT和HCB比未接种堆料降解率分别提高了41.1%、34.6%和20.1%。供试菌剂对DDT的降解效果最好,且DDT和HCH的降解能力与接种量大小呈正相关。此外,供试菌剂剂量大小对HCH不同异构体和DDT不同衍生物降解效果也不尽相同。
[Abstract]:In order to reduce the influence of organochlorine pesticides on the environment in municipal sludge compost, the laboratory provided the environmental temperature conditions of composting through external heat source, and inoculated different doses of laccase-producing Haemonella in different composting materials. The effects of different treatments on the degradation of HCH,DDT and HCB in sludge were studied. The results showed that the degradation of three organochlorine pesticides was obviously promoted by the tested red pore bacteria. The degradation rates of HCH,DDT and HCB by high temperature compost were 51.1%, 43.6% and 63.4%, respectively. When inoculated with 1% microbial agent, the degradation rates of HCH,DDT and HCB were increased by 16.2%, 34.6% and 21.7%, respectively. When inoculated with 3% fungicides, the degradation rates of HCH,DDT and HCB were 41.1%, 34.6% and 20.1% higher than those of uninoculated reactors, respectively. The degradation effect of DDT was the best, and the degradation ability of DDT and HCH was positively correlated with the size of inoculum. In addition, the degradation effect of different isomers of HCH and different derivatives of DDT was not the same.
【作者单位】：许昌市环境监测中心;山东省冶金设计院股份有限公司;河南农业大学林学园艺学院;郑州市气象局;
【基金】：河南省科技攻关项目(152102310021) 河南省高等学校重点科研项目(17A610001)
【分类号】：S141.4;X592

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