Preparation method of microbial preparation and application thereof in leather wastewater treatment

Abstract

The invention discloses a preparation method of microbial preparation and application thereof in leather wastewater treatment, relates to industrial sewage treatment and provides a microbial preparation for leather sewage treatment. The microbial preparation is prepared from the following effective viable bacteria of 106 to 107CFU/mL of saccharomyces cerevisiae, 106 to 108CFU/mL candida utilis, 106 to 108CFU/mL of lactobacillus fermenti, 106 to 108CFU/mL of lactobacillus casei, 105 to 107CFU/mL of photosynthetic bacterium and 105 to 107CFU/mL of micrococcus luteus. The microbial preparation can be applied to treating leather wastewater. The microbial preparation disclosed by the invention has the beneficial effects of tolerating and decomposing sulfide and lipid in leather wastewater in high efficiency, saving a part of coagulating sedimentation link in an original leather wastewater treatment technology, remarkably reducing a chemical sludge yield and effectively inhibiting growth ofmicroorganisms of putrefying bacteria and the like and solving the problem of stink generated in a wastewater treatment process.

Description

technical field [0001] The invention relates to industrial sewage treatment, in particular to a preparation method of a microbial preparation and its application in leather wastewater treatment. Background technique [0002] The pollution of the environment by the tanning industry is serious, and the annual wastewater discharge volume of the existing tanning enterprises in my country has reached 100 million tons. Due to the relatively low utilization rate of raw materials in the tanning process, a large amount of protein and fat are transferred to the wastewater, and a large amount of chemical raw materials are added in the tanning process: acid, alkali, salt, sodium sulfide, lime, surfactant, chromium Tanning agents, dyes, etc., except for a part absorbed, most of them enter the waste water and cause pollution. Tannery wastewater has deep color, heavy odor, high suspended solids, high pH value, high organic matter content, and complex components. Due to the intermittent di...

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Problems solved by technology

[0003] At present, the leather wastewater treatment technology mainly uses chemical flocculation for pretreatment, followed by biological oxidation treatment, and finally advanced treatment such as advanced oxidation technology and membrane filtration. 2 、Na 2 The strong alkaline depilation and liming wastewater of S, and the degreasing wastewater containing oil and saponification are divided and pretreated. Not only the treatment process is complicated and cumbersome, but also chemicals such as flocculants and acids are used in the treatment process to form a large amount of excess sludge, which costs a lot of treatment. At the same time, the factory area is usually accompanied by foul smell

At present, the microbial agents in the domestic market are relatively poor in specificity. Although the efficiency of the biochemical system can be improved to a certain extent after use, the front-end shunt pretreatment is still required, and the production process of the product is cumbersome and the cost is high.

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