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Method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification and wastewater treatment method

A technology for tiamulin and wastewater, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The win-win effect of COD, low cost, environmental governance and economic benefits

Active Publication Date: 2012-08-22
山东胜利生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the recycling of waste, and greatly reduces the COD of sewage. The waste water after recovering 4-methyl-2-pentanone can be used for traditional sewage treatment, which solves the problem of the original high-concentration tiamulin sewage (i.e. high COD value sewage) is difficult to biodegrade

Method used

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  • Method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification and wastewater treatment method
  • Method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification and wastewater treatment method
  • Method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification and wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Research on the steps of salting out:

[0023] Take 1L of tiamulin waste water and carry out salting-out treatment. The salts used are: sodium chloride, sodium sulfate, and calcium chloride, and the addition ratio is 0.5% of the mass of the tiamulin waste water. filter, after suction filtration, dry the precipitated substance, then weigh, and the weights are respectively:

[0024]

[0025] From the above experiments, it can be seen that the effect of adding sodium chloride for salting out is the best, the most solid matter is precipitated, and the effect of reducing COD and solvent separation of sewage is the best.

[0026] 2. Research on acidification steps:

[0027] Take 1L of tiamulin wastewater, and carry out acid adjustment treatment. The acids used are: concentrated sulfuric acid (98wt%), concentrated hydrochloric acid (36wt%), concentrated phosphoric acid (85wt%), and the pH of the wastewater is adjusted to 5.0. The amount is shown in the following table....

Embodiment 2

[0030] Take 1L of tiamulin wastewater, first add 0.5% sodium chloride of wastewater quality for salting out operation, and then adjust the pH value with concentrated sulfuric acid, so that the pH value of tiamulin synthetic wastewater is in the range of 4.5-5.5, 4.0-4.5 Within the range of 3.3-4.0, stand and separate for 6h, collect the ketone phase after the separation, the obtained 4-methyl-2-pentanone is as follows:

[0031]

[0032] It can be seen from the above results that the recovery of 4-methyl-2-pentanone is the best when the pH range of the wastewater is 3.3-4.0.

Embodiment 3

[0034] Further, the 4-methyl-2-pentanone isolated in Example 2 can also be added to a rectification tower for rectification to improve the purity, and the product purity after rectification is as follows:

[0035]

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Abstract

The invention discloses a method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification. The method comprises the following steps: inorganic salt is added to the tiamulin wastewater for carrying out salting out, part of organic substance sediment is dissolved out, the sediment is removed by filtering, and then inorganic strong acid is added to the wastewater for adjusting the pH value of the wastewater, the wastewater is enabled to be layered, and the separated organic phase is 4-methyl-2-pentanone. The invention also provides the treatment method for the tiamulin wastewater. According to the method, 4-methyl-2-pentanone is recovered from the tiamulin wastewater through salting-out and acidification, the recycle of waste is realized, the COD (Chemical Oxygen Demand)of the wastewater in which the 4-methyl-2-pentanone is recovered is greatly lowered, and the emission requirements can be achieved through common wastewater treatment procedures. Compared with the current treatment of tiamulin wastewater, the difficulty of the wastewater treatment method is low, the cost is low, the cyclic utilization of raw materials is realized, and the requirements on circulareconomy and clean production are met.

Description

technical field [0001] The invention relates to a method for recovering 4-methyl-2-pentanone by acidifying tiamulin wastewater and a treatment method for tiamulin wastewater, belonging to the technical field of wastewater treatment. Background technique [0002] Tiamulin is produced by the higher fungus Basidiomycetes Pleurotus Pleurotus mutilus Pleuromutilin is fermented and then chemically synthesized to obtain hydrogenated fumarate, which is a special diterpene antibiotic for livestock and poultry. The synthesis process of tiamulin is a one-step sulfonation reaction, that is, the sulfonation reaction of pleuromutilin and p-toluenesulfonyl chloride to generate an intermediate, and the acylation reaction of the intermediate with ethanethiol to generate the tiamulin base product. After the synthesis, it must be washed with water before proceeding to the next step. Tiamulin wastewater has a high COD value. The general wastewater treatment method is to directly treat tiamuli...

Claims

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Application Information

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IPC IPC(8): C02F9/04C07C49/04C07C45/78
Inventor 张建风张宗鹏杜敏辉郭文营王振华张巨平王向前
Owner 山东胜利生物工程有限公司
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