摘要
低温真空脱水干化成套技术是一种新型污泥半干化技术。该技术将污泥的脱水、压滤与热干化等工序合成一体,在同一设备上连续完成。含水率为90%~99%的物料经一次工艺处理后,其含水率降至30%以下。嘉定某污水处理厂污泥处理采用低温真空脱水干化成套技术,设计规模为100 t/d(污泥含水率为80%),处理后污泥含水率<30%,可作建材利用或与生活垃圾掺烧。介绍了污泥低温真空脱水干化的原理、工艺流程、系统组成、设计及运行成本等。
Low-temperature vacuum dewatering and drying technology is a new type of sludge semi-drying technology.The technology integrates the steps of dewatering,pressure filtration and heat drying of sludge,and completes them continuously on the same equipment.The material moisture content of 90%-99%is reduced to less than 30%after one cycle.The low-temperature vacuum dewatering and drying technology was adopted in a sewage treatment plant in Jiading with the sludge treatment design capacity of 100 t/d when the sludge moisture content was 80%.After treatment,the sludge water content was less than 30%and could be used for building materials or incinerated together with domestic garbage.The principle,process flow,system composition,design and operation cost of sludge lowtemperature vacuum dewatering and drying was elaborated.
作者
王首都
WANG Shou-du(Shanghai Municipal Engineering Design and Research Institute<Group>Co.Ltd.,Shanghai 200092,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2019年第22期91-95,共5页
China Water & Wastewater
关键词
污泥处理
污泥半干化
低温真空脱水干化技术
sludge treatment
sludge semi-drying
low-temperature vacuum dewatering and drying technology
