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A METHOD FOR RECOVERING AND STABILIZING FAT AND FATTY SUBSTANCES AS WELL AS PROTEINS AND PROTEINOUS SUBSTANCES FROM PROCESS WATER
A METHOD FOR RECOVERING AND STABILIZING FAT AND FATTY SUBSTANCES AS WELL AS PROTEINS AND PROTEINOUS SUBSTANCES FROM PROCESS WATER
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机译:一种从过程水中回收和稳定脂肪和脂肪物质以及蛋白质和蛋白质物质的方法
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1468091 Recovering fatty substances from aqueous effluents APOTHEKERNES LABORATORIUM FOR SPECIALPRAEPARATER AS 8 Feb 1974 [9 Feb 1973] 05893/74 Heading C5C [Also in Divisions C1 and C3] Fatty and/or proteinaceous substances are recovered from aqueous effluents by adding an acid hydrolysing metal salt to complex with the substance, reducing the pH to 5 or below if it is above 5, and precipitating the complex in the presence of added alkaline earth metal ions by raising the pH to 6 or more. The acid hydrolysing salt can be ferric sulphate, ferric chloride or aluminium sulphate. The pH can be reduced by adding mineral acid such as sulphuric acid. A calcium salt can be added in aqueous solution together with the acid hydrolysing salt to provide the alkaline earth metal ions and the pH can be raised by alkali metal hydroxide; alternatively CaO or Ca(OH) 2 can be added to both provide the alkaline earth metal ions and to raise the pH. The precipitated complex can be separated from the purified effluent by flotation achieved by the release of air dissolved in the water under pressure, sedimentation or centrifugation. The examples describe the treatment of effluents from a margarine factory, a tallow melting plant and a slaughterhouse. The precipitated complexes are resistant to autoxidation and can be included in animal fodder mixtures.
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机译:1468091从废水中回收脂肪物质APOTHEKERNES LABORATORIUM AS 1974年2月8日[1973年2月9日] 05893/74品目C5C [也在C1和C3分部中]通过添加酸水解金属从废水中回收脂肪和/或蛋白质物质盐与物质形成络合物,如果pH大于5,则将pH降低至5或更低,并在添加碱土金属离子的情况下通过将pH升高至6或更高来沉淀该络合物。酸水解盐可以是硫酸铁,氯化铁或硫酸铝。可以通过添加无机酸例如硫酸来降低pH。可以将钙盐与酸水解盐一起添加到水溶液中以提供碱土金属离子,并且可以通过碱金属氢氧化物来提高pH。或者,可以添加CaO或Ca(OH)2既提供碱土金属离子又提高pH。可以通过浮选将沉淀的复合物与纯化的废水分离,该浮选是通过在压力,沉降或离心作用下释放溶解在水中的空气来实现的。实例描述了来自人造黄油厂,牛脂熔化厂和屠宰场的废水的处理。沉淀的复合物具有抗自氧化作用,可以包含在动物饲料混合物中。
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