【摘要】 对西安地区典型污泥特性进行了检测分析,对当前我国主要的污泥处置方式进行了阐述,探讨西安地区适宜的污泥处置方式。泥质分析结果为,含水率81%~86%,p H7.03~7.75,有机物含量60%~69%,灰分29.94%~36.26%,挥发分54.39%~59.13%,高位发热量14.73~16.47 MJ/kg,少数重金属含量超出土地利用国家相关标准规定,格金焦油产率25%~30%,半焦产率41%~47%。基于泥质分析,以及土地资源紧张,污泥产量大、增长快等西安地区现状,污泥的焚烧及干化热解资源化技术有望成为当地污泥处置的重要方式,焚烧项目在选址时需留意"邻避效应"。更多还原

【Abstract】 The article analyzes and detects the typical sludge characters in the area of Xian, sets forth the main sludge disposal methods now in China and discusses the sludge disposal methods suitable for the area of Xian.The analysis results of sludge quality show that the moisture content is 81%~86%, the pH is 7.03~7.75, the organic content is 60%~69%, the ash content is 29.94%~36.26%, the volatile component is 54.39%~59.13%,and the higher heating value is 14.73~16.47 MJ/kg. And a few heavy metal contents of Gray-King tar yield25%~30% and char yield 41%~47% exceed the national relative standards and regulations of land utilization.Based on the analysis of sludge quality and the present situation of limited land resource, large sludge output and fast sludge increment in the area of Xian, the incineration and drying pyrolysis recycling technology of sludge is expected to become the important method of local sludge disposal. The attention should be paid to the "nimby effect" when the sites of incineration project are selected.更多还原