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目首先使固化剂与淤泥接触前就与水混合形成固化剂混合液,省去了常规工艺中洒干粉导致的配比不精确,固化剂干粉散布不均匀的问题,同时大大节约了固化剂的用量; Firstly, the curing agent is mixed with water before contacting with sludge to form the curing agent mixture, which eliminates the problems of inaccurate proportion and uneven distribution of curing agent dry powder caused by spraying dry powder in the conventional process, and greatly saves the amount of curing agent; 其次,利用带旋喷的固
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淤泥固化仍存在以下几方面问题 The following problems still exist in sludge solidification (1)目前淤泥固化大多是在淤泥含水率较高、 呈流动状态下进行的, 这就意味着要加入较多的固化材料,因此不仅固化效果不佳,而且经济适用性差。 (1) At present, sludge solidification is mostly carried out under the condition of high moisture content and flowing state of sludge, which means that more solidification materials should be added. Therefore, not only the solidification effect is poor, but also th
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污泥处理就是对污泥进行浓缩、调治、脱水、稳定、干化或焚烧的加工过程。 Sludge treatment is the process of thickening, conditioning, dehydration, stabilization, drying or incineration of sludge. 随着我国经济的发展,城市废水排放量日益增多,污泥产生量也随之大幅度提高,污泥处理处置逐渐成为国内外关注的焦点。 With the development of China's economy, the discharge of urban wastewater is increasing day by day, and the production of sludge is also greatly improved. Sludge treatment and dispos
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污泥的卫生填埋 Sanitary landfill of sludge 这种处置方法简单、易行、成本低,污泥又不需要高度脱水,适应性强。但是污泥填埋也存在一些问题,尤指填埋渗滤液和气体的形成。渗滤液是一种被严重污染的液体,如果填埋场选址或运行不当会污染地下水环境。填埋场产生的气体主要是甲烷,若不采取适当措施会引起爆炸和燃烧。 This treatment method is simple, easy, low cost, sludge does not need high dehydration, and has strong adaptability. However, there are also some problems in sludge landfill, especially the
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污泥的焚烧 Incineration of sludge 湿污泥干化后再直接焚烧应用得较为普遍,没有经过干化的污泥直接进行焚烧不仅十分困难,而且在能耗上也是极不经济的。 Direct incineration of wet sludge after drying is widely used. Direct incineration of sludge without drying is not only very difficult, but also very uneconomic in energy consumption. 污泥焚烧处理 Sludge incineration treatment 以焚烧为核心的污泥处理方法是最彻底的污泥处理方法,它能使有机物全部碳化,杀死病原体,可最大限度地减少污泥体
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随着污染防治攻坚战的推进,我国污水处理率已超过90%,作为污水处理重要副产物的污泥也伴随污水处理规模的扩大而大量产生。但与高污水处理率形成鲜明对比的则是低于30%的污泥无害化处置率。根据《“十三五”生态环境保护规划》目标的明确指示,2020年底前,地级及以上城市污泥无害化处理处置率将达到90%,污泥处置走出“泥泞“困境已刻不容缓。 据统计,我国目前污水处理总量大约2亿吨/天,粗算产生湿污泥量约为20万吨/天,产量惊人。但由于行业内长期“重水轻泥”,我国每年产生的大量污泥中,约3000万吨没有得到妥善安置,形势不
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