城市污水厂污泥处置技术分析及福州市污泥处置的思考

The analysis of disposal sewage sludge and reflections on disposal sewage sludge in Fuzhou

本文对城市污水厂污泥处理处置主要技术进行分析,并阐述了国外污泥处置技术发展趋势,提出了污泥处理处置工作急需解决的问题。结合当前的污泥处置技术发展趋势,通过对福州市污水厂污泥处置现状及存在问题分析,提出了福州市今后的污泥处置技术路线:将厌氧消化做为有效减容、减量的手段,对污染物指标达到国家土地利用标准的污泥考虑土地利用,污染物指标不符合国家土地利用标准的污泥考虑焚烧和建材利用。

The primary technologies of wastewater treatment plant were analysed and their developing trend worldwide were expatiated on in this paper. Some issues about sludge treatment work, which needed urgently solved were also brought up. Considering the development trend of sludge treatment technologies , current status and technical problems of wastewater treatment plants in Fuzhou, we set up the future technical direction of sludge treatment of Fuzhou. Anaero- bic digestion should be used as an effective method to reduce the volume and magnitude. With pollutant index under the national standards for land use, sludge could be reused in land, and sludge, of which pollutant index exceeded the standard might be incinerated or used as building materials.