多氯联苯在土壤水环境中生物降解过程规律研究

Study on biodegradation of PCBs in soil-water-microbes system

土壤水环境中的有机污染物多氯联苯 (PCB)可以采用土地生物处理的方法进行降解 ,在综合考虑土壤水环境系统中有机污染物生物降解各分过程的基础上所建立的数学模型 ,可以预测降解PCB所需的时间、降解程度以及降解结束后被土壤所屏蔽的PCB的量 .数学模型通过美国Alcoa公司在LTU基地的大型土地生物处理工程得到了验证 .利用数学模型和理论分析 ,预测了 2 ,3,4和 5 Cl

Based on the mass\|balance theory, a comprehensive mathematical model, concerning the effects of diffusion, sorption/desorption, biodegradation, especially the intraparticle irreversible sequestration, has been developed in this paper in order to predict organic chemical biodegradation in remediation site. Model simulation results match successfully with the field data of bioremediation processes in LTU sites on Alcoa′s Massena, New York. By using this model and theoretical analysis,2,3,4, and 5\|Cl\|PCBs biodegradation processes and regularities including the treatment time and extent in remediation sites have been predicted in this paper.