用于市政污泥深度脱水的隔膜压滤机系统设计要点

Design Considerations for the Diaphragm Filter Press System Aimed at Achieving Deep Dewatering of Municipal Sludge

用于市政污泥深度脱水的隔膜压滤机系统复杂,设备多,对运行控制要求高,前期设计是否合理直接影响到该系统的正常运行。针对一些项目的压滤机系统运行过程中存在的进料时间长、处理效率低、泥饼含水率高等问题,根据该系统的工作原理和性能特点,通过现场调查,从设计和运行角度对进料污泥含水率、污泥调理效果、过滤和压榨压力等关键影响因素进行了全面研究和分析,归纳总结了污泥调理、进料和压榨等环节的设计要点,并对压滤机选型、污泥浓缩形式、调理池设计、进料泵选型及安装和压榨等提出建议,可为类似项目的设计和运行提供借鉴。

The diaphragm filter press system utilized for the deep dewatering of municipal sludge is intricate,involving much equipment and requiring meticulous operational control.The initial design plays a crucial role in ensuring smooth system operation.Addressing issues such as prolonged feeding time,low treatment efficiency,and elevated moisture content in the mud cake during the operation,a comprehensive study and analysis are conducted.This examination encompasses design and operational aspects,leveraging insights from the system’s working principles and performance characteristics gathered through field investigations.Key influencing factors including incoming sludge moisture content,sludge conditioning effectiveness,filtration and pressing pressure are thoroughly examined.The study focuses on critical aspects including sludge conditioning,feeding process,and pressing procedure are summarized while recommendations regarding filter press type selection,sludge concentration form determination,conditioning tank design optimization,feed pump selection and installation,pressing system.These proposals are intended to serve as valuable references for the design and operation of similar projects in the future.