大型暂存污泥库区污泥绞吸出库技术应用研究

Study on Application of Sludge Suction Storage Technology for Large-scale Sludge Reservoir Area in Short-time Storage

国内市政污泥因历史问题临时覆膜密闭堆放的问题屡见不鲜。某暂存污泥库区需要将污泥取出后进行干化处理后送至电厂焚烧,以解决环保问题,恢复暂存场地土地使用功能。取泥过程易发生臭气外泄,产生二次污染及作业安全问题。采用绞吸技术,可以在全封闭状态下完成污泥绞吸至污泥干化设备,通过牵引实现绞吸装置的膜下移动进行大部分污泥的绞吸出库。在绞吸完成后紧随进行清库作业,直至库区污泥全部取出。通过实践验证,绞吸出库相对常规挖泥工艺有快速、环保、出泥含水率受控等优势,可为类似项目提供参考。

The domestic municipal sludge due to the historical problems of temporary film closed stacking problems is common.In a temporary sludge storage area,the sludge needs to be taken out for drying treatment and then sent to the power plant for incineration in order to solve the environmental problems and restore the land use function of the temporary storage site.In the process of sludge taking,it is easy to cause the secondary pollution and the operation safety problemsdue to odor leakage.With the closed suction technology,the sludge can be pumped to the sludge drying equipment in a fully closed state.The most of sludge can be suctioned out of storage area through the traction to realize the movement of the sludge suction device under the film.The cleaning operation will be carried out immediately after the completion of suction until all the sludge in the storagearea is removed.Through the practical verification,the suction storage technology has the advantages of high speed,environmentalprotection and controllable sludge moisture content compared with the conventional sludge digging technology,which can be referred for the similar projects.