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Method for treating antibiotic wastewater

A treatment method, antibiotic technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of water quality that cannot meet the discharge requirements, large amount of chemical reagents, and environmental problems. Secondary pollution and other issues, to achieve the effect of reducing unit treatment energy consumption, safe and stable effluent water quality, and low infrastructure costs

Active Publication Date: 2012-07-18
SHANDONG NEWTIME PHARMA
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  • Claims
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Problems solved by technology

Among them, the dosage of chemical reagents in the process of physical and chemical pretreatment of wastewater is large, so this method not only has high operating costs, but also the chemical reagents added are likely to cause secondary pollution to the environment; the operating conditions of the anaerobic biological treatment process are strict and the reaction time is long. , and the toxic substances in the wastewater have inhibitory or poisonous effects on anaerobic microorganisms, and the quality of the effluent is poor and has a strong odor; after conventional aerobic biological treatment, the water quality still cannot meet the discharge requirements or can not be reused even though it meets the standards, causing serious damage to water resources. waste

Method used

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  • Method for treating antibiotic wastewater
  • Method for treating antibiotic wastewater
  • Method for treating antibiotic wastewater

Examples

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Embodiment 1

[0028] Embodiment 1: comparative test in the aerobic activated sludge tank after the hydrolytic acidification treatment of erythromycin production wastewater

[0029] The erythromycin production wastewater after hydrolysis and acidification treatment was divided into two groups, one of which was the control group, in which no reagents or strains were added except for the aerobic activated sludge, and the other group was the bacterial injection group, except the well Microbial agents were added to the oxygen-activated sludge every day. In the two groups of experiments, after 24 hours of aeration reaction, the supernatant in the tank was discharged after half an hour of settlement, and the wastewater from the hydrolytic acidification tank was added again. In the two groups of experiments, the pH value of the wastewater was adjusted to 8.0, and the dissolved oxygen was 3mg / l. The initial dosage of the microbial agent in the bacterial injection group was 10‰ (volume ratio), and the...

Embodiment 2

[0031] Embodiment 2: the pilot test of method of the present invention processing penicillin production wastewater

[0032] The wastewater from the penicillin production wastewater pretreatment of Shandong New Times Pharmaceutical Co., Ltd. was used for the pilot test. During the test, the wastewater stayed in the hydrolytic acidification tank for 60 hours, the pH value was 7.0, and the dissolved oxygen was 0.3mg / l; The residence time in the activated sludge tank is 10h, the pH value is 8.0, the dissolved oxygen is 3mg / l, the initial dosage of microbial agent is 10‰ (volume ratio), and after two weeks of continuous dosage, the dosage is 0.5‰ (volume ratio ), continue to add COD and NH in the effluent for six weeks 3 -N and penicillin concentrations were basically stable and stopped adding; the pH value of the wastewater in the Fenton oxidation pond was 3.0, Fe 2+ Mass concentration 10mg / l, H 2 o 2 The total mass concentration is 120mg / l, and it is added evenly in three time...

Embodiment 3

[0034] Embodiment 3: the pilot test of method of the present invention processing erythromycin production waste water

[0035] The wastewater from Shandong New Times Pharmaceutical Co., Ltd. after pretreatment of erythromycin production wastewater was used for a pilot test. During the test, the wastewater stayed in the hydrolytic acidification tank for 48 hours, the pH value was 6.5, and the dissolved oxygen was 0.5mg / l; The residence time in the aerobic activated sludge tank is 10h, the pH value is 8.0, the dissolved oxygen is 4mg / l, the initial dosage of microbial agent is 15‰ (volume ratio), and the dosage after continuous dosage is 1‰ (volume ratio) ratio), continue to add COD and NH in the effluent for four weeks 3 -N and erythromycin concentrations were basically stable and stopped adding; the pH value of the wastewater in the Fenton oxidation pond was 3.0, Fe 2+ Mass concentration 15mg / l, H 2 o 2 The total mass concentration is 150mg / l, and it is added evenly in thre...

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Abstract

The invention discloses a method for treating antibiotic wastewater and belongs to the field of wastewater treatment. The treatment method comprises the following steps: pre-treatment, hydrolysis and acidification, bioaugmentation-based first-stage treatment, Fenton oxidation and biological advanced treatment. The method is applied to treat wastewater from antibiotic production, works with high efficiency, ensures that the effluent quality is safe and stable and meets the requirements listed in the water quality standard GB / T18920-2002, and can achieve the purposes of beneficial cycle of water resources and green production in enterprises.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a method for treating wastewater generated in an antibiotic production process. Background technique [0002] At present, there are more than 300 enterprises producing antibiotics in my country, producing 70 varieties of antibiotics accounting for 20% to 30% of the world's output. The output is increasing year by year, and it has become one of the major antibiotic preparation countries in the world. The antibiotic production process includes microbial fermentation, filtration, extraction, crystallization, refining, refining and other processes. The wastewater produced has a high concentration of organic matter (biochemical oxygen demand is usually 5000-80000mg / l), a high concentration of suspended solids (500-25000mg / L ), complex components (intermediate metabolites, surfactants, high concentrations of acids, alkalis and organic solvents), presence of biologically ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 苏建文陈建华王彩冬朱文杰
Owner SHANDONG NEWTIME PHARMA
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