WANG Sheng-dong.A Case of Sludge Deep Dewatering in Laogang Landfill Leachate Emergency Treatment Project[J].China Water & Wastewater,2021,37(24):107-112.
老港垃圾渗滤液应急项目污泥深度脱水工程实例
- Title:
- A Case of Sludge Deep Dewatering in Laogang Landfill Leachate Emergency Treatment Project
- Keywords:
- landfill leachate; membrane technology; emergency treatment; deep dewatering; plate and frame filter press
- 摘要:
- 垃圾渗滤液处理多采用膜工艺,采用膜法处理渗滤液，且将剩余污泥含水率降至60%以下，是渗滤液处理的难点之一。老港应急渗滤液处理工程通过生产性的实证，试验了多种药剂工况，得出了板框压滤结合有机混凝剂的方法，可实现剩余污泥含水率降至60%以下,其中采用聚胺法运行费用最低，约为600~750元/t绝干泥。该方法解决了膜法处理渗滤液将剩余污泥含水率降至60%以下的难题，可在类似工程中推广使用。
- Abstract:
- Membrane technology is widely used in landfill leachate treatment, however, it is difficult to reduce the moisture content of residual sludge to below 60%. It is realized by the method of plate and frame filter press combined with organic coagulant through productive demonstration at Laogang landfill leachate emergency treatment plant, after testing a variety of chemical conditions. Among them, the polyamine method has the lowest operation cost of about 600-750 yuan/tDS. This method solves the problem of reducing the moisture content of residual sludge to below 60% in membrane treatment of leachate and can be widely used in similar projects.
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