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procedure for the regeneration and recycling of spent powdery activated carbon in a belebtschlammprozeß
procedure for the regeneration and recycling of spent powdery activated carbon in a belebtschlammprozeß
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机译：belebtschlammprozeß中废粉状活性炭的再生和再循环程序
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摘要
1503093 Regenerating active carbon from water treatment NITTETU CHEMICAL ENG Ltd 1 April 1976 [4 April 1975] 13328/76 Heading C1A Activated sludge containing active carbon powder, from waste water treatment, is treated to regenerate the active carbon by (i) dewatering and at least partially drying the mixture to form a powder, (ii) dispersing the powder in a furnace where it is vigorously agitated by high-velocity hot combustion gases from a burner, under conditions to selectively decompose the sludge and organic substances on the active carbon and gasify them, and so to regenerate the active carbon; and (iii) recirculating the active carbon to the aerator of the water treatment process. Preferred operating conditions in the furnace are 800-1000‹ C., oxygen concentration less than 5% by volume, and powder residence time of 0À3-5 seconds. The regenerated active carbon may be treated with acid, e.g. HCl at pH 2, to reduce its ash content prior to the recirculation.
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机译：1503093通过水处理再生活性炭NITTETU CHEMICAL ENG Ltd 1976年4月1日[1975年4月4日]标题C1A处理废水中含有活性炭粉末的活性污泥，可以通过（i）脱水和至少部分干燥该混合物以形成粉末，（ii）将粉末分散在炉中，在该炉中，通过燃烧器产生的高速热燃烧气体对其进行剧烈搅拌，其条件是选择性地分解活性炭上的污泥和有机物质。将它们气化，从而再生活性炭; （iii）将活性炭再循环到水处理过程的曝气器中。炉中优选的操作条件是800-1000℃，氧气浓度小于5％（体积），粉末停留时间为0-3-5秒。再生的活性炭可以用酸处理，例如酸处理。 pH为2的HCl，以减少再循环之前的灰分。
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