污泥资源化过程中新兴污染物的赋存与控制研究进展

RESEARCH PROGRESS ON OCCURRENCE AND CONTROL OF EMERGING POLLUTANTS IN PROCESS OF SLUDGE RECYCLING

新兴污染物在污泥中的检出率逐年增加,给污泥的处理带来安全隐患。污泥资源化利用(厌氧消化制沼气和好氧堆肥制土壤改良剂)不仅能实现废弃物的循环利用,还能有效削减污泥中的新兴污染物。从污泥中检出率较高的3类新兴污染物入手,综述不同新兴污染物在污泥中的赋存状况以及污泥资源化过程中新兴污染物的控制措施。污泥资源化处理工艺能够有效控制和削减污泥中存在的大部分新兴污染物。不同新兴污染物的去除效果主要受污染物自身理化性质、降解难易程度、温度、pH、C/N、外源物质添加等因素影响。提出未来应将多种新兴污染物共存体系的去除路径及降解机制研究、优化关键控制参数、提高新兴污染物去除率作为重点研究及技术突破。

The detected ratea of emerging pollutants in sludge are increasing year by year,which brings potential safety hazard to sludge treatment.Sludge utilization(anaerobic digestion to biogas and aerobic composting to soil amendment)can not only realize the recycling of waste,but also effectively reduce the emerging pollutants in sludge.Therefore,this paper reviewed the occurrence of different emerging pollutants in sludge and the control measures of emerging pollutants in the process of sludge recycling.Sludge resource treatment process can effectively control and reduce the majority of emerging pollutants in the sludge.The removal efficiency of different emerging pollutants was mainly affected by the physical and chemical properties of the pollutants,degradation difficulty,temperature,pH,C/N and the addition of exogenous substances.It was proposed that the removal paths and degradation mechanism of multiple emerging pollutants coexistence system,optimization of the control parameters and rise of removal rate of emerging pollutants should be the technical breakthrough points in the future.