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Method for recovering protein from heparin sodium extraction waste liquid

A technology of heparin sodium and protein, which is applied in the field of protein recovery, can solve the problems of incomplete removal of pollutants and long process cycle, and achieve the effects of fast flocculation and precipitation, small dosage, and strong bridging adsorption performance

Inactive Publication Date: 2015-04-01
SHANDONG SHEN LIAN BIOLOGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment process has a long cycle and the removal of pollutants is not complete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Extract 6000L of heparin sodium wastewater, temperature 45°C, pH 8.5, salt content 4.5%, add polyaluminum chloride solution 30KG (concentration 50%), stir for 10 minutes, add polyacrylamide solution 20KG (concentration 10%), continue stirring for 10 minutes, turn off the stirring, let stand for 10 minutes, the protein precipitates to the bottom, the supernatant is clarified, the supernatant solution is pumped off, the bottom protein is collected, dried, weighed, and the weight is 78KG. The COD removal rate is 96 %, the protein recovery rate was 98%.

Embodiment 2

[0021] Extract 8000L of heparin sodium wastewater, temperature 44°C, pH 8.0, salt content 4.4%, add 40KG polyaluminum chloride solution (concentration 50%), stir for 10 minutes, add polyacrylamide solution 25KG (concentration 10%) after stirring evenly %), continue to stir for 10 minutes, turn off the stirring, and let it stand for 10 minutes, the protein precipitates to the bottom, the supernatant is clarified, the supernatant solution is sucked off, the bottom protein is collected, dried, weighed, and the weight is 102KG. COD removal rate is 97% , The protein recovery rate was 99%.

Embodiment 3

[0023] Extract 4000L of waste water of heparin sodium, temperature 46°C, pH 8.3, salt content 4.6%, add polyaluminum chloride solution 20KG (concentration 50%), stir for 10 minutes, after stirring evenly, add polyacrylamide solution 13KG (concentration 10%) %), continue to stir for 10 minutes, turn off the stirring, and let it stand for 10 minutes, the protein precipitates to the bottom, the supernatant is clarified, the supernatant solution is sucked off, the bottom protein is collected, dried, weighed, and the weight is 50KG. COD removal rate is 95% , The protein recovery rate was 98%.

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Abstract

The invention specifically relates to a method for recovering a protein from heparin sodium extraction waste liquid, which comprises the following steps: adding an aluminum salt solution in heparin sodium extraction waste liquid, and stirring; after uniformly stirring, adding a flocculant solution, and stirring; when a large amount of flocculent precipitate appears, standing; drawing off the supernatant, and collecting the precipitate; and drying to obtain the protein. According to the invention, the used polyaluminum chloride product has high bridging adsorbability, and physical and chemical processes such as condensation, adsorption, precipitation and the like are accompanied in the hydrolytic process. The polyaluminum chloride structurally comprises a shape-variable multi-element carboxyl complex, has a high flocculent precipitation speed and a wide applicable pH value range, and causes no corrosion to pipeline equipment. The high molecular weight polyacrylamide forms bridges among the adsorbed particles to generate flocs, thereby being beneficial to settling of the particles; and the polyacrylamide is low in consumption, high in efficiency and easy to realize post treatment.

Description

(1) Technical field [0001] The invention relates to a method for recovering protein from industrial waste water, in particular to a method for recovering protein from heparin sodium extraction waste liquid. (2) Background technology [0002] Heparin is a mucopolysaccharide widely present in mammalian tissues. Heparin sodium is the sodium salt of heparin, which has anticoagulant, antithrombotic and blood lipid regulating effects, and also has anti-inflammatory, anti-allergic, anti-viral, anti-cancer and other functions. It is widely used in surgery and treatment of cerebral thrombosis and myocardial infarction. As a natural anticoagulant substance, heparin sodium has been valued by countries all over the world. It is also one of the main export drugs in my country. Crude heparin sodium is a traditional export product of our country and occupies an important position in the world. [0003] At present, heparin sodium is mainly extracted from the small intestinal mucosa of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07K1/30C02F9/04
Inventor 谢成君李鑫王慧陈露甄爱华刘建洋
Owner SHANDONG SHEN LIAN BIOLOGY TECH CO LTD
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