污泥间接干化产生尾气的恶臭污染潜力分级评价  

Rating evaluation of odor potential pollution capacity for odor gas released during process of sludge indirectly drying

作　　者：丁文杰[1,2,3] 张觊 张科 李琳[1,2] 刘俊新[1,2] 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]中国科学院大学,北京100049 [3]中电建路桥集团有限公司,北京100048 [4]北京水泥厂有限责任公司,北京102202

出　　处：《环境工程学报》2017年第5期3009-3016,共8页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2010ZX07319-001-03);国家自然科学基金重点基金资助项目(51138009)

摘　　要：目前,污泥干化是其资源化处理及其他处置的基础。污泥受热干化时会释放恶臭物质,易引发恶臭污染,对周围环境和居民生活造成影响。以污泥间接干化产生的尾气为对象,基于国内外恶臭污染相关规定,综合考虑污泥间接干化产生的尾气中物质浓度、嗅阈值、阈限值、气味安全级别以及饱和蒸汽压,通过指标权重评分方法筛选出污泥间接干化产生尾气中的主要恶臭污染物。以恶臭污染潜力为评价目标,风险系数和臭气排放强度为评价指标,通过韦伯-费希纳定律构建污泥间接干化产生尾气的恶臭污染潜力分级评价模型,形成适合污泥间接干化产生尾气的恶臭污染潜力分级评价方法,为恶臭污染的预防和控制提供借鉴。利用本方法对污泥间接干化案例进行分析,结果显示,污泥间接干化产生尾气的恶臭污染潜力值为3.21,潜在恶臭污染能力属于Ⅳ级。At present,sludge drying is a necessary step for sludge handling and resourcing. Thermal drying is an effective way to desiccate sludge. However, odors and volatile organic compounds are generated and released dur- ing sludge drying,which could lead to odor pollution. The aim of the present study was to form a rating evaluation method of odor potential pollution capacity suitable for an indirect sludge drying process and provide important reference for the prevention and control of odor pollution. The main odor pollutants were selected by a multi-in- dex integrated assessment method. The pollutant concentration, olfactory threshold, threshold limit value, smell security level, and saturated vapor pressure were used as indices, based on related domestic and foreign regula- tions. Using the pollution potential as the evaluation target and the risk index and odor emission intensity as eval- uation indices,a rated evaluation model of odor pollution potential by the pollutants was built according to the Weber-Fechner law. An indirect sludge drying case was analyzed by the evaluation method, with results showing that the odor potential pollution capacity value was 3.21 and the odor potential pollution level was IV.

关 键 词：污泥间接干化 干化尾气 恶臭污染潜力 分级评价 韦伯-费希纳定律 

分 类 号：X512[环境科学与工程—环境工程]