污泥深度脱水+带式干化组合工艺探讨

Discussion on Combined Process of Sludge Deep Dewatering and Belt Drying

目前污泥干化工艺一般是直接将80%含水率的污泥干化到10%~30%,存在蒸发水量大、运行能耗高、工艺流程复杂和运行维护成本高等问题,制约着污泥干化工艺的应用。研究表明,采用污泥深度脱水+带式干化组合工艺可大大节省能耗,同时具有运行成本低、工艺流程简单、工程投资省和可资源化利用等优点,对污泥干化工艺推广应用具有重要意义。

The water content of sludge can be reduced from 80% to 10% -30% directly by sludge drying process. However, the application of sludge drying process was restricted usually by the problems such as large evaporation rate, high energy consumption, complicated process and high cost of operation and maintenance. Instead, the combined process of sludge deep dewatering and belt drying can reduce energy consumption greatly. Meanwhile, it has many advantages of low operation cost, simple process, low engineering investment and resource utilization. These characteristics of sludge drying process are of great significance to its application.