Method for recovering 4-methyl-2-pentanone from tiamulin wastewater by acidification and wastewater treatment method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
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
View PDF3 Cites 9 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
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 t...
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
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]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more