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[来源:www.yuniguhua.com] [作者:淤泥固化] [日期:22-01-29]

相关研究认为,2020年我国市政污泥年产量将达到6000万吨至9000万吨。在污泥处置缺口日趋增大的趋势下,如何拓展污泥处置市场,探索污泥资源化利用技术,是污水处理行业创新突破的必经之路。如何打通污水处理“最后一公里”,为污泥处置寻找一条合适的出路成为亟待解决的难题。
Relevant studies believe that the annual output of municipal sludge in China will reach 60 million tons to 90 million tons in 2020. With the increasing gap of sludge disposal, how to expand the sludge disposal market and explore sludge resource utilization technology is the only way for innovation and breakthrough in the sewage treatment industry. How to get through the "last mile" of sewage treatment and find a suitable way for sludge disposal has become an urgent problem to be solved.
污泥处置技术多点开花,污泥焚烧成大势所趋
Sludge disposal technology blossoms at many points, and sludge incineration has become a general trend
近年来,污泥已经从过去单一的填埋处置转变为填埋与农艺运用、焚烧消化等兼而用之的多种处置方式。其中,污泥“丢弃”( 如填埋、农用) 是最为简单和经济的方式,在“地大物博”的中国,污泥“丢弃率”高达70%以上。从经济性及操作难易程度等方面考虑,“丢弃”固然备受青睐,但受空间和农业的限制,我国现有的填埋场将满负荷运行。没有足够可持续接纳污泥的填埋场地,技术路线也是临时过渡性的,且填埋也不符合我国提倡的无废城市理念及未来发展趋势。另外,据一些园林绿化公司反馈,污泥对植物生长的作用远比不上肥料,而且黏稠、味重,因此园林绿化公司免费接收并不积极。由此可见,污泥填埋及农用并非污泥处置长期可行的最佳方式。
In recent years, sludge has changed from a single landfill disposal in the past to a variety of disposal methods combined with landfill, agronomic application, incineration and digestion. Among them, sludge "discarding" (such as landfill and agriculture) is the most simple and economical way. In China with "vast land and abundant resources", the sludge "discarding rate" is as high as more than 70%. In terms of economy and ease of operation, "discarding" is favored, but due to the limitations of space and agriculture, China's existing landfill will operate at full capacity. There is not enough landfill site for sustainable acceptance of sludge, the technical route is also temporary and transitional, and the landfill is not in line with the concept of waste free city and future development trend advocated by China. In addition, according to the feedback of some landscaping companies, the effect of sludge on plant growth is far less than that of fertilizer, and it is sticky and tastes heavy. Therefore, landscaping companies are not active in receiving it free of charge. It can be seen that sludge landfill and agriculture are not the best long-term feasible ways of sludge disposal.

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