Treatment method of fermentation antibiotic wastewater

Abstract

The invention belongs to the technical field of water, wastewater, sewage or sewage treatment, and in particular discloses a treatment method of fermentation antibiotic wastewater. The method comprises a pretreatment stage and a biochemical treatment stage, wherein the pretreatment stage comprises the following steps: (1) removing suspended solids; (2) adding quicklime into the wastewater treatedin step (1) so as to enable the pH value of the wastewater to be equal to 8-10; (3) adding a cationic polymer into the wastewater treated in the step (2); (4) filtering the wastewater, treated in thestep (3), with a filter membrane; (5) adding concentrated sulfuric acid into the wastewater treated in the step (4) until the pH value of the wastewater is equal to 2-3; (6) adding the quicklime intothe wastewater treated in the step (5) so as to enable the pH value of the wastewater to be equal to 6-8; (7) settling and filtering the wastewater treated in the step (6). The method not only can enable antibiotics to inactivate and does not cause secondary pollution, but also can cause partial ions, generated after hydrolysis of the antibiotics, to precipitate so as to effectively reduce the concentration of the wastewater.

Description

technical field [0001] The invention belongs to the technical field of water, waste water, sewage or sludge treatment, and specifically discloses a method for treating fermented antibiotic waste water. Background technique [0002] Fermentation antibiotic wastewater refers to the wastewater produced when antibiotics or other active ingredients are produced by fermentation. In recent years, my country's antibiotic pharmacy has developed rapidly. More than 300 domestic enterprises can produce more than 70 kinds of antibiotics, and the output of antibiotics accounts for 20%-30% of the world's antibiotic output. The wastewater quality of antibiotics has problems such as complex components, poor biodegradability, large wastewater discharge and large changes in wastewater volume. In addition, antibiotic wastewater contains a large number of antibiotics and metabolites, which have certain acute toxicity and microbial inhibition. [0003] From the perspective of the water quality ...

AI Technical Summary

Problems solved by technology

Existing deactivation methods often cause secondary pollution to the environment

[0004] In addition, in addition to a large amount of antibiotics, wastewater also contains a large amount of sulfate. If the wastewater containing a large amount of sulfate is discharged into the water body, the sulfate has a strong inhibitory effect on microorganisms, and will cause the water body to produce foul smell and Corrosive H 2 S, directly endangering human health and ecological balance

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