某大型污泥填埋场不揭膜取泥技术研究

Study on Technology of Sludge Extraction without Removing Membrane in a Large Sludge Landfill

摘要:

污水厂污泥未实行规范填埋期间，大量的污水厂污泥倾倒在简易填埋场，随着时间推移，填埋场的稳定性和环境污染倍受关注，如何安全稳定异位处置填埋场污泥这已经成为新的环境问题。针对这种问题，采用清淤机器人膜下清淤的技术对污泥库中的污泥进行取泥中试试验，探讨清淤机器人膜下清淤的技术对填埋场污泥进行处理的可行性。研究结果表明：清淤机器人膜下清淤技术适用于填埋场污泥取泥工艺；填埋场污泥库区过大可采取分区域取泥；可采用中间缓冲池过渡提高出泥的稳定性；膜下取泥需进行多重除杂工艺便于输送及后续处置。清淤机器人膜下清淤的技术是填埋场污泥异位处置的有效途径之一，对于深层污泥的取泥技术要求还需进一步研究。

Abstract:

During the period of non-standardized landfill of sewage sludge in WWTP, a large amount of WWTP sludge is dumped into in a simple landfill. As time goes by, the stability of landfill and the environmental pollution have been concerned. How to safely and stably dispose the landfill sludge to the other places has become a new environmental problem. Aiming at this problem, the technology of desilting robot to desilt under membrane is used to carry out the pilot test of desilting sludge in the sludge library. The feasibility of the technology of desilting robot under membrane to treat the landfill sludge is discussed. The study result shows that the technology of desilting robot under membrane can be applicable to the desilting process of landfill sludge. If the landfill sludge library is overlarge, the desilting can be carried out by subareas. The transition of intermediate buffer pool can be used to improve the desilting stability. The desilting under membrane is required with the process of multiple removing impurities convenient for the conveyance and follow-up disposal. The technology of desilting robot under membrane is one of the effective ways to dispose the landfill sludge to other place. The technical requirements of deep sludge desilting need to be further studied.