污泥脱水精确控制系统的设计和应用  

Design and Application of Precise Control System for Sludge Dewatering

作　　者：赵林辉 林莉峰 尹希勤 ZHAO Linhui;LIN Lifeng;YIN Xiqin(Shanghai Municipal Engineering Design InstituteCo.,Ltd.,Shanghai200092,China;Shanghai Zexi Environmental Protection Engineering Co.,Ltd.,Shanghai200092,China)

机构地区：[1]上海市政工程设计研究总院<集团>有限公司,上海200092 [2]上海择希环保工程有限公司,上海200092

出　　处：《净水技术》2022年第3期154-159,共6页Water Purification Technology

基　　金：上海市科委基金:污水厂污泥绿色低耗干化焚烧关键技术研究及示范(19230730900)。

摘　　要：脱水污泥的含水率对污泥干化焚烧工程的运行成本起着至关重要的作用。以上海市白龙港污泥处理处置二期工程为实践依据,介绍污泥脱水精确控制系统的设计和应用。根据在线采集的进泥流量信号、污泥进出浓度信号,通过数学模型计算每台污泥脱水机的加药量,通过控制加药螺杆泵频率改变加药泵的流量,进而精准控制出泥含水率,节省药剂使用量,保证脱水、干化和焚烧全系统稳定高效运行。同时,精确控制系统的应用解决了以往脱水系统与干化焚烧系统的信息孤岛问题,实时监控污泥浓度变化,进一步完善了智慧水务运行管理平台的设计,促进信息共享和畅通,具有重要的应用价值。The moisture content of dewatered sludge plays an important role in the operation cost of sludge drying and incineration project. Based on Shanghai Bailonggang sludge treatment and disposal phase II project, the design and application of precise control system for sludge dewatering are introduced. According to the signal of sludge flow rate and sludge concentration collected online, the dosage of each sludge dehydrator is calculated by mathematical model. The frequency of dosing screw pump is controlled to change the flow of dosing pump to accurately control the water content of sludge, the dosage of reagent can be saved, and the stable and efficient operation of the whole system of dehydration, drying and incineration can be ensured. At the same time, the application of accurate control system solves the problem of information island of previous dehydration system and drying and incineration system, and monitors the change of sludge concentration in real time, which further improves the design of intelligent water operation management platform and promotes information sharing and smooth flow, which has important application value.

关 键 词：精确控制 出泥含水率 智慧水务 数学模型 微波浓度计 

分 类 号：TU992[建筑科学—市政工程]