Neomycin sulfate wastewater treatment method

Abstract

The invention discloses a neomycin sulfate wastewater treatment method which comprises the following steps: pretreatment, air floatation, deamination treatment, hydrolytic acidification, anaerobic digestion treatment, adsorption filtration, elution, comprehensive adjustment, catalytic separation, A / O biochemical treatment, MBR treatment and oxidation decolorization. According to the method, the wastewater generated in the neomycin sulfate production process is divided into a high-concentration fermentation liquor and a low-concentration extracting solution according to the concentration, and the high-concentration fermentation liquor and the low-concentration extracting solution are respectively pretreated according to the water quality characteristics of the fermentation liquor and the extracting solution, so that the biodegradability of the fermentation liquor and the extracting solution is improved, and the subsequent biochemical treatment effect is ensured. The A / O biochemical treatment adopts organic foaming fibers as a microbial carrier, so that the treatment efficiency of aerobic cenobium is improved, and microbial loss caused by antibiotics is avoided. Ozone tail gas enters a catalytic separation and fermentation liquor adjusting tank, the ozone tail gas is fully utilized, and the influence of ozone on subsequent working sections is eliminated. An MBR tank is arranged to improve the effluent quality, and an ozone reactor is used for decolorizing the wastewater, so that the water quality and chromaticity of the wastewater can reach the discharge standard.

Description

technical field [0001] The invention relates to the field of antibiotic production industrial waste water treatment, in particular to a neomycin sulfate waste water treatment method. Background technique [0002] Neomycin sulfate is an aminoglycoside broad-spectrum antibiotic, mainly has strong bactericidal effect on Staphylococcus aureus and aerobic Gram-positive bacteria, and has a strong bactericidal effect on Serratia, Alcaligenes, Brucella, Salmonella Bacillus, Haemophilus, Shigella, Mycobacterium tuberculosis, and other mycobacteria also have good antibacterial effects. Neomycin sulfate uses Streptomyces fradiae as the bacterial species. It is cultured and fermented to obtain a fermented liquid. After being adsorbed by a superacidic cation exchange resin, it is eluted with ammonia water. Prepared after spray drying. [0003] The amount of neomycin sulfate wastewater is generally large, usually including high-concentration fermentation wastewater and low-concentration...

AI Technical Summary

Problems solved by technology

Ozone pretreatment can effectively improve the biodegradability of organic waste, but the insufficient utilization and elimination of ozone leads to increased costs

[0005] At the same time, we found that antibiotics such as neomycin sulfate have little effect on the activity of anaerobic bacteria in the anaerobic treatment process, but have a greater impact on the activity of activated sludge in the aerobic treatment process, even if the concentration of neomycin sulfate is low The extracted liquid wastewater is directly treated with aerobic treatment. The activated sludge needs a large amount of supplement to maintain the activity of the sludge, and the aerobic bacteria group is easy to dissolve and lose in the environment of antibiotics.

Because the existing methods are not ideal enough, there is an urgent need to research and develop new processing technologies.

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