高压带机+低温干化工艺用于污泥深度脱水  

Application of High-pressure Belt Filter and Low Temperature Sludge Dryer System in Sludge Deep Dewatering

作　　者：阮燕霞 杨文文 魏宏斌[2] RUAN Yan-xia;YANG Wen-wen;WEI Hong-bin(Shanghai Zhongyao Environment Protection Industry Co.Ltd.,Shanghai 200092,China;College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海中耀环保实业有限公司,上海200092 [2]同济大学环境科学与工程学院,上海200092

出　　处：《中国给水排水》2024年第8期119-124,共6页China Water & Wastewater

摘　　要：通过现场试验对比研究污泥进泥性状、含水率以及出泥含水率对低温干化设备单位时间除水量的影响,并在此基础上研究了联用工艺(进泥含水率约80%)的运行费用、单位功率除水量(SMER)、设备初投资和污泥处理量等。试验结果表明,高压带机能够降低低温干化段的进泥含水率和改良污泥孔隙率,使低温干化单位时间除水量和SMER分别提高7.2%和5.0%以上。技术经济分析结果表明,联用工艺最多可节约运行费用33.4%以上,设备投资最高可降低30.3%以上,且随着低温干化段出泥含水率的提高,节约效益更加显著。对于既有项目,通过增设高压带机(连续污泥深度脱水设备)最高可提升200%的污泥处理量。“高压带机+低温干化”联用工艺与直接低温干化相比,在设备运行效率、运行费用、设备初投资和污泥处理量4个方面均有较大优势。Influences of sludge property,moisture content of inlet sludge and outlet sludge moisture content on the specific moisture extraction of low temperature sludge dryer have been experimentally studied.On this basis,the operating costs,the specific moisture evaporation rate(SMER),initial investment and sludge treatment capacity of the combined process(about 80%moisture content of inlet sludge)were discussed.The experiment results show that the high-pressure belt can reduce the inlet sludge moisture content and improve the sludge porosity in low temperature sludge dryer section,and increase specific moisture extraction and SMER by above 7.2%and 5.0%,respectively.The results of technical and economic analysis show that the combined process can save operating costs and initial investment by over 33.4%and 30.3%,respectively,which could be more significant with the increase of the outlet sludge moisture content in the low temperature drying section.The sludge treatment capacity of the excited project could be doubled by adding high-pressure belt continuous sludge deep dewatering equipment.Therefore,the combination of high-pressure belt filter for continuous deep dewatering and low temperature sludge dryer system has notably advantages on operating efficiency,operating costs,initial investment and sludge processing capacity,compared with using low-temperature sludge dryer technology separately.

关 键 词：污泥深度脱水 高压带机 低温干化 污泥含水率 

分 类 号：TU992[建筑科学—市政工程]