玻璃蚀刻含氟废水处理污泥危险废物鉴别研究

Study on Hazardous Waste Identification of Fluorine-containing Sludge in Glass Etching Production Wastewater Treatment

以某AG(防眩光)玻璃生产企业玻璃蚀刻含氟废水处理污泥为研究对象,依据国家规定的危险废物鉴别标准和鉴别方法明确了含氟污泥的固体废物属性。运用溯源分析为主、检测分析为辅的方法,通过AG玻璃原辅料、生产工艺、废水处理工艺确定了含氟污泥有害成分的来源,结合初筛检测明确了含氟污泥危险特性分析指标,通过系统采样、检测分析判定含氟污泥的固体废物属性。结果表明,初筛分析判定含氟污泥不具有感染性、反应性、急性毒性,采样分析表明含氟污泥不具有腐蚀性、浸出毒性,毒性物质含量未超过标准限值要求,综合判定含氟污泥不具有危险特性。研究结果可作为玻璃蚀刻含氟污泥固体废物属性判定的参考,鉴别思路可为其他固体废物鉴别工作的开展提供借鉴。

Taking the sludge of fluorine-containing wastewater treatment from glass etching in an AG(Anti-glare)glass production enterprise as the research object,the solid waste characteristics of fluorine-containing sludge were clarified according to the identification standards and methods of hazardous waste stipulated by the state.Using the method of source tracing and detection analysis,the source of harmful components of fluorine-containing sludge was determined by AG glass raw materials,production process and wastewater treatment process.Combined with the preliminary screening test,the analysis index of the risk characteristics of fluorine-containing sludge was determined,and the solid waste properties of fluorine-containing sludge were determined by systematic sampling and detection analysis.As a result,the preliminary screening analysis showed that the fluorine-containing sludge was not infectious,reactive and acute toxic.The sampling analysis showed that the fluorine-containing sludge was not corrosive and leaching toxic.The content of toxic substances did not exceed the standard limit requirements,and the fluorine-containing sludge was comprehensively determined not to have hazardous characteristics.The research results can be used as a reference for the determination of the properties of glass etching fluorine-containing sludge solid waste,and the identification method can provide reference for other solid waste identification work.