“高压带式TJSD连续污泥深度脱水+低温干化”联用工艺应用于污泥深度脱水的实践和研究 杨文文1，阮燕霞1，魏宏斌2，唐秀华，刘立文，黄健

杨文文¹，阮燕霞¹，魏宏斌²，唐秀华，刘立文，黄健

（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）

摘 要：结合当前直接使用低温干化设备进行污泥减量干化能耗高、占地面积大等缺点，高压带式TJSD连续污泥深度脱水设备能耗低，占地面积小等特点，开发了“高压带式TJSD连续污泥深度脱水+低温干化”联用工艺。通过现场实验对比研究污泥进泥性状、含水率以及污泥出泥含水率对低温干化设备单位时间去水量的影响，并在此基础上对比研究了联用工艺和直接低温干化（进泥含水率为80%左右）的运行费用、单位功率去水量（SMER）、设备初投资和污泥处理量。实验结果表明，联用工艺因为使干化设备使其进泥含水率降低和污泥性状改良，低温干化设备单位时间去水量和SMER分别提高了7.2%和5.0%以上。技术经济分析结果表明，相比于直接采用低温干化工艺，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，且随着低温干化设备出泥含水率的提高，节约效用更加显著。另外对于现有直接低温干化项目，通过增设高压带式连续污泥深度脱水设备最高可提升200%的污泥处理量。故“高压带式TJSD连续污泥深度脱水+低温干化”联用工艺从设备运行效率、运行费用、设备初投资和污泥处理量四个方面相比于直接低温干化均有较大优势，具备明显推广价值。

关键词：高压带式TJSD连续污泥深度脱水，低温干化，联用工艺，污泥，去水量

中图分类号：TU992

Research and Application of the Combination of High-pressure Belt Filter for Continuous Deep Dewatering and Low-temperature Sludge Dryer System in sludge deep dewatering。

(1. Shanghai Zhongyao Environment Protection Industry Co. Ltd, Shanghai 200092，China；2. College of Environmental Science and Engineering, Tongji University, Shanghai 200092，China)

Abstract：the combination of high-pressure belt filter for continuous deep dewatering and low-temperature sludge dryer system has been developed since the high energy consumption and large area occupation of low-temperature sludge dryer and low energy consumption and high space utilization efficiency of the high-pressure belt filter for continuous deep dewatering technology in sludge dewatering. Influences of sludge structure, moisture content of inlet sludge and moisture content of outlet sludge on the specific moisture extraction have been experimentally studied. The specific moisture extraction, the specific moisture rate (SMER), operating costs, initial investment and sludge processing capacity were discussed on the basis of the experiments. The experiments showed that the specific moisture extraction and SMER increased above 7.2% and 5.0% respectively of the low-temperature sludge dryer when the combination system was applied. On the other hand, a 33.4% and 30.3% of the operating costs and initial investment could be saved while using the combination system, respectively. The effect could be more significant with the increase of the outlet sludge moisture content. The sludge processing capacity of the excited project could be doubled while the combination system was applied. In summary, 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. Therefore, the collaboration system is significant valuable in dewatering applications.

Keywords：high-pressure belt filter for continuous deep dewatering; low-temperature sludge dryer; combination system; sludge; quantity of dewatering