疏浚底泥直接土地利用风险分析及控制措施

Risk Analysis and Precautions of Direct Land Utilization of Dredged Sediment

疏浚底泥直接土地利用是底泥减量化、无害化、资源化利用的重要方式。底泥中含有重金属、有机物等污染物,污染物之间相互作用造成复合污染。底泥直接土地利用参考的标准不完善,底泥在疏浚、运输以及直接土地利用过程中可能造成生态及健康风险。根据底泥的污染特性、污染物的暴露途径等采取一系列有效措施可以降低疏浚底泥直接土地利用带来的风险。

Direct land utilization of dredged sediment is an important way of sediment reduction,harmless and resource utilization.The sediment contains heavy metals,organic pollutants and other pollu-tants,and there are complex forms between pollutants.The reference standard for direct land uti-lization of sediment is not perfect,and sediment may cause ecological and health risks during dredging,transportation and direct land utilization.According to the characteristics of sediment pollution and the ways of pollutant exposure,a series of effective measures are taken to reduce the risk of direct land use of dredged sediment.