Pectin wastewater decomposition drying treatment technology

Abstract

The invention discloses a pectin wastewater decomposition drying treatment technology. The technology comprises the following steps: allowing pectin wastewater to go through a first grid in order to remove large impurities; arranging straws in an acidification bacterium straw culture pool, and culturing acidification bacteria in the straws; introducing wastewater to the straw pool, pouring the straws to the straw pool, mixing, and taking out the straws; allowing obtained wastewater to go through a second grid; introducing wastewater to an air floatation pool, and carrying out an aeration air floatation process to remove a certain amount of pectin in the wastewater; adjusting the pH value of the wastewater to 3-8; introducing obtained wastewater to a wastewater microbe reaction pool, and introducing moulds in a microbe culture pool to the wastewater microbe reaction pool; and filtering and compressing obtained wastewater by using a filter press to press pectin in the wastewater into a dry pectin material. The technology well meets treatment of wastewater generated in the orange production process, and has the advantages of good treatment effect and high efficiency.

Description

【Technical field】 [0001] The invention relates to the technical field of wastewater treatment, in particular to the technical field of a process for decomposing and drying pectin wastewater. 【Background technique】 [0002] Pectin is a group of polygalacturonic acid, which is a polysaccharide mixture composed of galacturonic acid. It contains many methylated pectic acids with a molecular weight of about 50,000 to 300,000. It is found in the wastewater discharged from the citrus production process The pectin content is as high as 1%. Pectin is a thickener, which can make the citrus canned production wastewater appear viscous and affect biological treatment. Citrus production effluents with high pectin content are difficult to dry by ordinary processes. The main reason is When the filter press process is used, the filter press operation cannot be performed due to its poor water permeability. When the filter dry process is used, the filter drying time is longer, and the fine pul...

AI Technical Summary

Problems solved by technology

[0002] Pectin is a group of polygalacturonic acid, which is a polysaccharide mixture composed of galacturonic acid. It contains many methylated pectic acids with a molecular weight of about 50,000 to 300,000. It is found in the wastewater discharged from the citrus production process The pectin content is as high as 1%. Pectin is a thickener, which can make the citrus canned production wastewater appear viscous and affect biological treatment. Citrus production effluents with high pectin content are difficult to dry by ordinary processes. The main reason is When the filter press process is used, the filter press operation cannot be performed due to its poor water permeability. When the filter dry process is used, the filter drying time is longer, and the fine pulp in the wastewater is easy to rot. The method of microbial decomposition decomposes the pectin in the wastewater. For fruit The wastewater discharged from the production of canned citrus with high pectin content is not ideal for microbial decomposition, because the pectin content is large, the microbial decomposition efficiency is low, and the cost of cultivating microorganisms is high, so the traditional flocculation sedimentation is used to treat it from activated sludge methods are more difficult

Images