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Loading flocculation pretreatment method of antibiotic fermentation wastewater

A technology for fermenting wastewater and antibiotics, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., which can solve the problems of substandard treatment, increasing the amount of flocculant added, and increasing treatment costs. , to achieve the effect of improving flocculation effect, improving removal efficiency and improving collision efficiency

Active Publication Date: 2012-02-15
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 in the terminal adjustment tank of antibiotic fermentation process in a pharmaceutical factory has a temperature of 36°C, a pH of 7.69, a COD of 11514mg / L, and a 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%, and add the mixed solution to the waste water while stirring, so that the content of polyaluminum chloride in the waste water is 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%, and add the above mixed solution to the above-mentioned waste water treated with polyaluminum chloride under stirring to make the polyacrylamide The content in the waste water is 2.5mg / L, the stirring speed is 300r / min, and the stirring time is 20s.

[0025] Take a certain amount of sedimentation...

Embodiment 2～10

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

[0029] Take a certain amount of loading agent, disperse it in water, and prepare the concentration as C 1suspension, adjust the pH of the suspension. Add the above-mentioned suspension to the waste liquid under the condition of stirring, the stirring speed is V 1 , the stirring time is T 1 . The volume ratio of waste liquid to suspension liquid 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 is added to the above-mentioned waste water treated with activated sludge under the condition of stirring, and the stirring speed is V 2 , the stirring time is T 2 . The amount of the polyaluminum chloride mixed solution is such that t...

Embodiment 8

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

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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, in particular to a loading and flocculation treatment method for antibiotic fermentation wastewater. Background technique [0002] At present, there are more than 300 antibiotic production enterprises in my country, which can produce 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 world's major antibiotic preparation countries. Antibiotic production includes microbial fermentation, filtration, extraction and crystallization, refining, refining and other processes. The fermentation production of antibiotics usually uses grain or molasses as raw materials. The wastewater in the production process mainly comes from high-concentration organic wastewater in the separation, extraction, and purification processes, such as crystallization liquid, waste mother liquor, seed tank washing wastewater, fermentation ...

Claims

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Application Information

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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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