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Loading flocculation pretreatment method of antibiotic fermentation wastewater

A technology for fermenting waste water and antibiotics, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve problems such as large pH fluctuations, high cost, and substandard treatment, and achieve Recycling and reuse, saving treatment costs, and improving the effect of flocculation

Active Publication Date: 2013-06-12
河北协同环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of this type of wastewater, the residual sulfate, nutrient organic matter, and waste mycelia in the wastewater have a high concentration of suspended solids, high chroma, and large pH fluctuations, which often result in poor pretreatment effects of existing treatment methods and flocculation and sedimentation. Insufficient amount increases the difficulty of subsequent biochemical treatment, resulting in low COD removal rate and substandard treatment
In order to enhance the effect of flocculation and sedimentation, it is necessary to increase the amount of flocculant added, resulting in an increase in processing costs
Especially for intermittently discharged pharmaceutical wastewater, this treatment method is costly

Method used

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  • Loading flocculation pretreatment method of antibiotic fermentation wastewater
  • Loading flocculation pretreatment method of antibiotic fermentation wastewater
  • Loading flocculation pretreatment method of antibiotic fermentation wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The wastewater from the terminal regulator of the antibiotic fermentation process of a pharmaceutical factory has a temperature of 36°C, a pH of 7.69, a COD of 11514mg / L, and SS of 2355mg / L. The treatment process is as follows:

[0023] Disperse a certain amount of polyaluminum chloride in water to prepare a mixed solution with a mass concentration of 5%. This mixed solution is added to the waste water under stirring to make the content of polyaluminum chloride in the waste water 300mg / L, the stirring speed is 300r / min, and the stirring time is 10s.

[0024] Disperse a certain amount of polyacrylamide in water to prepare a mixed solution with a mass concentration of 0.1%. The above mixed solution is added to the wastewater treated with polyaluminum chloride under stirring, so that the polyacrylamide is in the The content in the wastewater is 2.5mg / L, the stirring speed is 300r / min, and the stirring time is 20s.

[0025] A certain amount of antibiotic fermentation wastewater ...

Embodiment 2～10

[0028] The waste liquid from the terminal regulator of the antibiotic fermentation process of a pharmaceutical factory has a temperature of 34°C, a pH of 7.06, a COD of 14264mg / L, and SS of 1724mg / L. The treatment process is as follows:

[0029] Take a certain amount of loading agent and disperse it in water to make the concentration C 1 To adjust the pH of the suspension. Under stirring conditions, add the above suspension to the waste liquid at a stirring speed of V 1 , The mixing time is T 1 . The volume ratio of waste liquid to suspension is 100:a.

[0030] Disperse a certain amount of polyaluminum chloride in water to prepare a mass percentage of C 2 The mixed solution of polyaluminum chloride was added to the wastewater treated with activated sludge under stirring conditions, and the stirring speed was V 2 , The mixing time is T 2 . The dosage of the polyaluminum chloride mixture is such that the content of polyaluminum chloride in the wastewater is b.

[0031] Disperse a cer...

Embodiment 8

[0035] The loading agent of Example 8 is the activated sludge produced by the biochemical treatment of the supernatant obtained by the solid-liquid separation of the antibiotic fermentation wastewater after flocculation treatment, and the precipitated sludge obtained by the solid-liquid separation after the antibiotic fermentation wastewater flocculation pretreatment. Mix in a ratio of 1:1;

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Abstract

The invention discloses a loading flocculation pretreatment method of antibiotic fermentation wastewater and is suitable for processing mixed wastewater discharged during each antibiotic fermentation technological section. By the adoption of the loading flocculation technology, flocculation pretreatment is carried out on mixed wastewater of a crystallization solution, waste mother liquor, dona tub washing wastewater and washing wastewater for a fermentation cylinder during the antibiotic production process. A flocculating agent contains polyaluminum chloride and polyacrylamide; and the addition sequence of the flocculating agent is to add polyaluminum chloride at first and then add polyacrylamide. A loading agent contains one or two mixtures selected from active carbon, fly ash, activatedsludge and settling sludge. By the adoption of the method provided by the invention, the flocculation treatment can be effectively carried out on high-density organic wastewater generated during the antibiotic fermentation production. The method provided by the invention is simple, requires low cost and has a stable effect. By the adoption of the method, the treated wastewater can reach the requirement of subsequent biochemical treatment.

Description

Technical field [0001] The invention belongs to the field of sewage treatment, and particularly relates to a loading flocculation treatment method of antibiotic fermentation wastewater. Background technique [0002] At present, there are more than 300 antibiotic production enterprises in my country, which can produce 70 kinds of antibiotics that account for 20%-30% of the world's output. The output is increasing every year, and it has become one of the world's major antibiotic preparation producers. Antibiotic production includes processes such as microbial fermentation, filtration, extraction crystallization, refining, and refining. The fermentation production of antibiotics usually uses grain or molasses as raw materials, and the wastewater in the production process mainly comes from high-concentration organic wastewater from separation, extraction, and purification processes, such as crystal liquid, waste mother liquor, seed tank washing wastewater, and fermentation tank washi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 卢琼刘洪泉石亚静赵永强
Owner 河北协同环境科技有限公司
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