[1]施祖辉,叶心彤,张艳,等.郑州新区污水处理厂污泥消化干化技术的应用[J].中国给水排水,2024,40(16):116-120.
　SHIZu-hui,YEXin-tong,ZHANGYan,et al.Application of Sludge Digestion and Drying Technology in Zhengzhou New District WWTP[J].China Water & Wastewater,2024,40(16):116-120.
点击复制

郑州新区污水处理厂污泥消化干化技术的应用

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第16期 页码: 116-120 栏目: 出版日期: 2024-08-17
Title:
Application of Sludge Digestion and Drying Technology in Zhengzhou New District WWTP
作者:
施祖辉1， 叶心彤1， 张艳2， 曹鑫莉2
（1.上海市政工程设计研究总院<集团>有限公司，上海 200092；2.中原环保股份有限公司，河南 郑州 450018）
Author(s):
SHI　Zu-hui1， YE　Xin-tong1， ZHANG　Yan2， CAO　Xin-li2
（1. Shanghai Municipal Engineering Design Institute Co. Ltd.， Shanghai 200092， China； 2. Zhongyuan Environmental Protection Co. Ltd.， Zhengzhou 450018， China）
关键词:
郑州新区污水处理厂;  污泥消化干化;  厌氧消化;  沼气
Keywords:
Zhengzhou New District wastewater treatment plant;  sludge digestion and drying;  anaerobic digestion;  biogas
摘要:
郑州新区污水处理厂污泥处理采用浓缩-脱水-消化-干化工艺，污泥消化规模为200 tDS/d，干化规模为300 t/d（污泥含水率按80%计），建成至今，消化、干化系统均运行稳定，产气率高。该系统根据功能定位，可分为污泥处理、污泥气利用、热量回收利用三部分。污泥经厌氧消化后产生沼气，沼气燃烧得到的热能用来干化消化后的剩余污泥；干化产生的高温尾气通过热能回收，用来提供维持厌氧需要的能量。最终得到含水率30%以下的干化污泥，外运处置利用，实现了系统的能量平衡，并为碳减排作出贡献。
Abstract:
The sludge treatment process of Zhengzhou New District wastewater treatment plant(WWTP) includes thickening, dewatering, digestion and drying. The sludge digestion capacity is 200 tDS/d and the drying capacity is 300 t/d (80% sludge water content), which have been running stably with high gas production rate since its completion. According to the function orientation, the system is divided into 3 major systems, such as sludge treatment, biogas utilization and heat recovery system. After anaerobic digestion of sludge, biogas is produced, and the heat energy obtained from the combustion of biogas is used to dry the remaining sludge after digestion. The high-temperature exhaust gas produced by drying is used to provide the energy needed to maintain the anaerobic temperature through heat recovery. The final dried sludge with less than 30% water content is obtained and shipped out for disposal and utilization, achieving the energy balance of the system and contributing to carbon emission reduction.
更新日期/Last Update: 2024-08-17