High calcium organic wastewater treatment method
A technology of organic wastewater and treatment methods, applied in the direction of extraction water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., to achieve the effect of easy reaction process, simple process, and realization of resource reuse
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Embodiment 1
[0019] In the acidification reactor, the industrial wastewater containing 0.6% calcium acetate and phosphoric acid were mixed in a molar ratio of 1:0.4, and acidification was carried out at 75°C for 10 minutes. Filter the mixed material with normal-pressure filter paper to separate the crude calcium phosphate product, wash the crude product to remove impurities, and dry it naturally to obtain a semi-finished product of calcium phosphate. At the same time, the filtrate was mixed with the extractant system consisting of 3 parts of trioctylamine, 5 parts of n-butanol and 3 parts of kerosene in the extraction tank with a mass ratio of 1:2, and the liquid-liquid extraction reaction under normal temperature conditions was carried out for 30 minute. The upper layer material is distilled under reduced pressure at a vacuum of 0.06MPa, and the fraction with a gas phase temperature of 60-100°C is collected. The fraction is naturally settled and separated, and the lower layer obtains a 43...
Embodiment 2
[0021] In the acidification reactor, the industrial wastewater containing 10% calcium propionate and sulfuric acid were mixed in a molar ratio of 1:0.55, and acidification was carried out at 50°C for 50 minutes. Centrifuge the mixed material at a speed of 3000 rpm to separate the crude calcium sulfate product, wash the crude product to remove impurities, and dry it naturally to obtain a semi-finished product of calcium sulfate. At the same time, the filtrate is mixed with the extractant system consisting of 4 parts of trioctylamine, 3 parts of n-pentanol and 3 parts of kerosene in the extraction tank with a mass ratio of 2:3, and the liquid-liquid extraction under normal temperature conditions is carried out. The extraction reaction was carried out for 40 minutes. The upper material is distilled under reduced pressure at a vacuum of 0.065MPa, and the fraction with a gas phase temperature of 60-100°C is collected. The fraction is naturally settled and separated, and the lower l...
Embodiment 3
[0023] In the acidification reactor, the industrial wastewater containing 12% calcium formate and sulfuric acid were mixed in a molar ratio of 1:1, and acidification was carried out at 60° C. for 45 minutes. Centrifuge the mixed material at a speed of 2000 rpm to separate the crude calcium sulfate product, wash the crude product to remove impurities, and dry it naturally to obtain a semi-finished product of calcium sulfate. At the same time, the filtrate is mixed with the extractant system consisting of 4 parts by mass of tripentylamine, 5 parts of n-decyl alcohol and 1 part of chloroform in the extraction tank at a ratio of 5:1 by mass, and the liquid-liquid extraction under normal temperature conditions is carried out. The extraction reaction was 60 minutes. The upper layer material is distilled under reduced pressure at a vacuum of 0.04MPa, and the fraction with a gas phase temperature of 60-100°C is collected, and the fraction is naturally settled and separated. The lower ...
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