Method for treating vitamin K3 production wastewater

A technology for producing wastewater and vitamins, which is applied in natural water treatment, chemical instruments and methods, and multi-stage water/sewage treatment. It can solve the problems of difficult evaporation, difficult biochemical treatment, and high energy consumption.

Active Publication Date: 2014-03-05
SICHUAN YINHE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for wastewater with high salinity and high organic content, evaporative concentration not only consumes a lot of energy, but also is difficult to evaporate and the operation stability is not high
At the same time, incineration will release odorous gas, which will easily cause secondary pollution and increase the cost of treatment
[0007] In addition, there are also dilution biochemical treatment methods, but for high-concentration wastewater, dilution not only consumes a lot of water but also increases the total discharge
However, in a high-salinity environment, biochemical treatment is difficult to achieve, and the treatment effect is not good.
Moreover, due to the high salt content in the wastewater, it is difficult for microorganisms to survive, making it impossible to use biological active treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Add a solution of 40.11 g of aluminum potassium sulfate in 500 ml of water to 5000 ml of vitamin K3 production wastewater with COD = 25.56 g / L and an inorganic salt content of 5 wt %, mix well, flocculate at 50 ° C for 1.5 h, and filter to remove residue. Take 1000ml of the waste water filtrate obtained by the aforementioned flocculation and put it into the autoclave, stir and heat up to 180°C, introduce industrial oxygen with an oxygen content of 99.2% by volume and pressurize to 0.5MPa, react for 1h, and filter to remove residue. Add 10 g of activated carbon (analytical grade, purity 99%, particle size 4 mesh) to the obtained filtrate, adsorb at 40°C for 30 min, and then filter off the adsorbent. The filtrate obtained after filtering the adsorbent was analyzed and tested, and its COD=92.18mg / L, which reached the first-class standard of organic matter discharge in the industrial wastewater discharge standard. The waste water was directly returned to the vitamin K3 work...

Embodiment 2

[0052] Take 1000ml of waste water with COD=276.18mg / L finally obtained in Comparative Example 2, add 10g of activated carbon (analytical grade, purity 99%, particle size is 4 mesh) to it, adsorb at 50°C for 5min, and then filter out the adsorbent. The filtrate obtained after filtering the adsorbent was analyzed and tested, and its COD=59.25mg / L, which reached the first-class standard of organic matter discharge in the industrial wastewater discharge standard. The waste water was directly returned to the vitamin K3 workshop for production and use. After recycling the waste water 20 times, it was not found that the quality of the vitamin K3 product was adversely affected by the use of the recycled waste water.

Embodiment 3

[0054] Add a solution of 3.125g polyacrylamide (number average molecular weight is 5 million, anionic) in 125ml water and 3.125g aluminum sulfate to 5000ml of vitamin K3 production wastewater with COD=28.69g / L and inorganic salt content of 5% by weight Potassium solution in 125ml of water, mixed evenly, flocculated at 30°C for 0.5h, filtered to remove residue. Take 1000ml of the waste water filtrate obtained by the aforementioned flocculation and put it into the autoclave, stir and heat up to 180°C, introduce industrial oxygen with an oxygen content of 99.2% by volume and pressurize to 2MPa, react for 3h, and filter to remove residue. Add 50 g of activated carbon (analytical grade, purity 99%, particle size 4 mesh) to the obtained filtrate, adsorb at 40°C for 10 min, and then filter off the adsorbent. The filtrate obtained after filtering the adsorbent was analyzed and tested, and its COD=36.28mg / L, which reached the first-class standard of organic matter discharge in the indu...

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Abstract

The invention relates to a method for treating vitamin K3 production wastewater. The method comprises the following steps: a) adding a flocculant into the vitamin K3 production wastewater to flocculate suspended solids and/or flotage in the wastewater and remove the suspended solids and/or flotage as filter residues; b) enabling the wastewater obtained by flocculation and residue removal in the step a) to come into contact with oxygen at 100-360 DEG C for 1-8 hours to carry out an oxidation reaction; and c) adding an adsorbent capable of decoloring and deodorizing the wastewater into the wastewater which has the oxidation reaction in the step b). The method can be used for removing a large amount of organic pollutants out of the vitamin K3 wastewater, the treated wastewater can not only reach the direct emission standard, but also can be recycled, even can be directly reused in a vitamin K3 production process, and the method is low in energy consumption, free of secondary pollution and capable of realizing zero wastewater emission, so that the method is a very clean and environmental-friendly wastewater treatment method.

Description

technical field [0001] The invention relates to a method for treating wastewater produced by vitamin K3, in particular to a cleaning method for treating wastewater produced by vitamin K3. Background technique [0002] At present, vitamin K3 products on the market mainly include menadione sodium bisulfite (MSB), menadione sodium bisulfite complex (MSBC), menadione pyrimidine sulfite (MPB), menadione Niacinamide Sulfite (MNB). Vitamin K3 has medical functions, is the earliest used vitamin, and is the most biologically active vitamin K family. It is also an important intermediate of anti-hemorrhagic drugs, clinically used to prevent and treat bleeding, relieve spasm, and analgesia. It can also be used as a feed additive, plant growth regulator, accelerator, and herbicide; it can also be used in coatings for ships, warships, etc. It has a wide range of uses and a broad market prospect. [0003] Vitamin K3 products MSB (menaquinone sodium bisulfite) and MNB (menaquinone bisulf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/36
Inventor 李先荣陈宁董明甫谢友才黄玉西
Owner SICHUAN YINHE CHEM
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