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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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

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

Examples

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Example Embodiment

[0028] Example 1: Comparative test of erythromycin production wastewater in aerobic activated sludge pond after hydrolysis and acidification

[0029] Divide the erythromycin production wastewater treated by hydrolysis and acidification into two groups, one of which is the control group, in which no reagents or strains are added except for the aerobic activated sludge, and the other is the bacteria-injection group. Microbial agents were added to the oxygen activated sludge every day. In both experiments, after 24 hours of aeration reaction, the supernatant in the tank was discharged after settling for half an hour, and the wastewater from the hydrolysis acidification tank was re-added. In the two 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 of the inoculation group was 10‰ (volume ratio), and the dosage after one week of continuous dosage was 1‰ (Volume ratio), stop the dosing after f...

Example Embodiment

[0031] Example 2: Pilot test of the method of the present invention to treat wastewater from penicillin production

[0032] Take the wastewater from the penicillin production wastewater pretreatment of Shandong New Times Pharmaceutical Co., Ltd. for pilot test. During the test, the wastewater stays in the hydrolysis and acidification tank for 60 hours, the pH value is 7.0, and the dissolved oxygen is 0.3 mg / l; the wastewater is aerobic 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 agents is 10‰ (volume ratio), and the dosage is 0.5‰ (volume ratio) after continuous dosing for two weeks ), continue to add COD and NH for six weeks 3 -N and penicillin concentration is basically stable, stop dosing; wastewater in Fenton oxidation tank pH value 3.0, Fe 2+ Mass concentration 10mg / l, H 2 O 2 The total mass concentration is 120mg / l, and it is uniformly dosed in three times, once every 2h, for a to...

Example Embodiment

[0034] Example 3: Pilot test of erythromycin production wastewater treatment by the method of the present invention

[0035] Take the wastewater from the erythromycin production wastewater of Shandong New Times Pharmaceutical Co., Ltd. for pilot test. During the test, the wastewater stays in the hydrolysis and acidification tank for 48h, pH value is 6.5, and dissolved oxygen is 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 agents is 15‰ (volume ratio), and the dosage after one week of continuous dosage is 1‰ (volume) Than), continue to add COD and NH for four weeks 3 -N and erythromycin concentrations are basically stable, stop dosing; wastewater in Fenton oxidation tank pH value 3.0, Fe 2+ Mass concentration 15mg / l, H 2 O 2 The total mass concentration is 150mg / l, and it is uniformly dosed in three times, once every 3h, for a total reaction of 9h; the residence time of w...

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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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