污泥电干化设备的工程应用
Engineering Application of Sludge Electric Drying Equipment

随着城镇化进程加快，污水处理厂污泥产量激增，传统处置方式面临环境与经济性双重挑战。本文以陕西省某地污泥无害化资源化处理工程为例，探讨电能驱动的低温干化技术应用。项目采用热泵耦合低温带式干化工艺，设计规模为280 t/d (含水率80%)，通过电能驱动热泵回收余热，实现污泥含水率从80%降至40%。运行数据显示，系统单位能耗为0.25 kWh/kg·H？O，综合成本较燃煤干化降低18%。研究表明，电能作为清洁热源可显著降低碳排放，为中小型城市污泥处理提供高效低碳解决方案。
With the acceleration of urbanization, the sludge production of sewage treatment plants has increased sharply, and traditional disposal methods face dual challenges of environment and economy. This paper takes the harmless resource treatment project of sludge in a certain place in Shaanxi Province as an example to explore the application of low-temperature drying technology driven by electric energy. The project adopts a heat pump coupled low-temperature belt drying process with a design scale of 280 t/d (water content 80%). The waste heat is recovered by electric energy-driven heat pump to reduce the sludge moisture content from 80% to 40%. Operation data shows that the unit energy consumption of the system is 0.25 kWh/kg·H？O, and the comprehensive cost is 18% lower than that of coal-fired drying. Studies have shown that electricity as a clean heat source can significantly reduce carbon emissions and provide an efficient and low-carbon solution for sludge treatment in small and medium-sized cities.