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Decoloration of molasses alcohol wastewater

Jiang Linbo

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Abstract

The decoloration of molasses alcohol wastewater was discussed in this paper. During the experimental processes, the molasses alcohol wastewater was frist flocculated by the mixture of polayaluminium chloride (PAC) and Polyacrylamide (PAM) at the rate of 5∶1. After this pretreatment the removal rates of COD and turbidity reach 95% and 90% respectively; the chroma decreases at the same time. Then the decoloration with activated carbon, strong chlorine and activated carbon-strong chlorine composite stabilizer was studied. The results showed that using the activated carbon alone could attain the best decolorizing effect. Furthermore, when pH is 4, 34 g/L of activated carbon can significantly reduce the chroma by 95%, after 180 min of chemical reaction.

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What this paper is about

The decoloration of molasses alcohol wastewater was discussed in this paper. During the experimental processes, the molasses alcohol wastewater was frist flocculated by the mixture of polayaluminium chloride (PAC) and Polyacrylamide (PAM) at the rate of 5∶1. After this pretreatment the removal rates of COD and turbidity reach 95% and 90% respectively; the chroma decreases at the same time. Then the decoloration with activated carbon, strong chlorine and activated carbon-strong chlorine composite stabilizer was studied. The results showed that using the activated carbon alone could attain the best decolorizing effect. Furthermore, when pH is 4, 34 g/L of activated carbon can significantly reduce the chroma by 95%, after 180 min of chemical reaction.

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Available abstract

The decoloration of molasses alcohol wastewater was discussed in this paper. During the experimental processes, the molasses alcohol wastewater was frist flocculated by the mixture of polayaluminium chloride (PAC) and Polyacrylamide (PAM) at the rate of 5∶1. After this pretreatment the removal rates of COD and turbidity reach 95% and 90% respectively; the chroma decreases at the same time. Then the decoloration with activated carbon, strong chlorine and activated carbon-strong chlorine composite stabilizer was studied. The results showed that using the activated carbon alone could attain the best decolorizing effect. Furthermore, when pH is 4, 34 g/L of activated carbon can significantly reduce the chroma by 95%, after 180 min of chemical reaction.

Key concepts: Chlorine, Activated carbon, Chemistry, Wastewater, Polyacrylamide, Alcohol, Turbidity, Powdered activated carbon treatment

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