山西省循环流化床粉煤灰环境风险评估及管控建议

Environmental risk assessment and management suggestions of circulating fluidized bed fly ash in Shanxi Province

为服务山西省循环流化床粉煤灰环境管理,本文在对全省循环流化床锅炉粉煤灰调查的基础上,选取典型粉煤灰开展了物理化学性质及污染物赋存及浸出特征研究,开展了不同暴露途径的环境风险评估,提出了环境风险管控建议。结果表明,循环流化床粉煤灰堆存对土壤和地下水无致癌风险,但具有一定的危害性,需强化堆存规范性、着力源头减量、拓宽综合利用,加强环境监管。

To serve the environmental management of circulating fluidized bed(CFB)fly ash in Shanxi,based on the province-wide investigation,this paper selected the typical fly ash to carry out the research on physicochemical properties and the occurring and leaching characteristics,and also assessed the environmental risks of different exposure scenarios.The environmental risk management suggestions were proposed.The results showed that CFB fly ash storage had no carcinogenic risk to soil and groundwater.However,because of its hazardous characteristics,it was necessary to strengthen the standardization of CFB fly ash storage,especially focusing on the source reduction,expanding the comprehensive utilization and reinforcing the environmental supervision.