OUXue-lian,GUOYan-ping,HUANGGuan-ying,et al.A Pilot Study on Low-temperature Sludge Drying Process Based on Double Air Duct and Large Air Volume[J].China Water & Wastewater,2023,39(11):115-121.
Click Copy

A Pilot Study on Low-temperature Sludge Drying Process Based on Double Air Duct and Large Air Volume

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第11期 Page: 115-121 Column: Date of publication: 2023-06-01
Author(s):
OU　Xue-lian1; 2;  GUO　Yan-ping1; 3;  HUANG　Guan-ying3;  HUANG　Qing-ying3;  ZHU　Gang-li1;  ZHANG　Hao3;  PAN　Ting-feng1;  MA　Kai1;  HU　Jia-rui1
（1. Guangdong Engineering and Technology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control， Guangdong Polytechnic of Environmental Protection Engineering， Foshan 528216， China； 2. Guangdong Huanyuan Environmental Engineering Co. Ltd.， Guangzhou 510665， China； 3. Guangdong Jikang Environmental System Technology Co. Ltd.， Foshan 528200， China）
Keywords:
low-temperature drying;  double air duct;  municipal sludge;  energy efficiency ratio
Abstract:
Aiming at the low drying efficiency of sludge with high moisture content or high viscosity, a pilot study on municipal sludge low-temperature drying process was carried out. The reliability and adaptability of the low-temperature drying equipment was verified by using double air duct and large air volume technology, and the influence of different operating parameters on the energy efficiency of the unit was discussed. The pilot unit ran continuously and stably. When the drying temperature was between 55 ℃ and 70 ℃, the moisture content of the sludge was reduced from 80% to less than 30%. The average unit energy consumption of water removal reached 3.72 kg/(kW·h), and the energy consumption of wet sludge treatment was 192 kW·h/t.
Last Update: 2023-06-01