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Method for preparing feed addictive by tea polyphenols organic waste water

A feed additive and organic sewage technology, which is applied in the molding or processing of animal feed, animal feed, animal feed, etc., can solve the problem of inappropriate treatment of organic sewage with tea polyphenols, achieve good social and economic benefits, and reduce consumption. , the effect of reducing production costs

Inactive Publication Date: 2006-12-27
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this technology is not suitable for the treatment of tea polyphenol organic sewage

Method used

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  • Method for preparing feed addictive by tea polyphenols organic waste water
  • Method for preparing feed addictive by tea polyphenols organic waste water

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Embodiment 1

[0032] The present invention is further illustrated by taking the successful application in a certain tea polyphenol production enterprise as an example: the enterprise adopts solvent extraction method to extract tea polyphenols from tea leaves, and its technological process is as attached figure 2 shown. 15 tons of tea polyphenol organic sewage is discharged after production every day, and the specific gravity of sewage is 1.024g / cm 3, with a solid content of about 6.6%, containing water-soluble components in tea such as tea polyphenols, tea polysaccharides, amino acids, and proteins, and about 3% of the reagent ethyl acetate remains. The chemical oxygen demand (COD) of sewage is as high as 82000mg / L after testing, it is difficult to use conventional methods for harmless treatment.

[0033] Adopt the processing step of the present invention to prepare feed additive with tea polyphenol organic sewage as follows:

[0034] 1) Pretreatment: The temperature of the tea polypheno...

Embodiment 2

[0045] The tea polyphenol organic sewage that adopts is with embodiment 1, and the processing step of preparing feed additive is as follows:

[0046] 1) Pretreatment: The temperature of the tea polyphenol organic sewage discharged from the distiller reaches 80°C, and it is forced to cool to 30°C through a heat exchanger with internal circulating cooling water, and then it is transported by a low-pressure pump to a filter fineness of 1~ The fine particles suspended in the sewage are removed by filtering with a 5μm precision filter, and the pretreated tea polyphenol organic sewage is obtained.

[0047] 2) Membrane separation and concentration: adopt compressive strength 41kgf / cm 2 , The polyamide composite reverse osmosis membrane with a desalination rate of 99.2% uses a cross-flow filtration method to perform membrane separation and cycle concentration on the pretreated tea polyphenol organic sewage, and the obtained tea polyphenol concentrated sewage has a specific gravity of ...

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Abstract

A method for preparing feed additive by using tea polyphenol organic sewage comprises the steps of 1) preprocessing: cooling and filtering tea polyphenol organic sewage to remove suspended finely ground particles to produce preprocessed tea polyphenol organic sewage; 2) membrane separation concentration: membrane separation and cyclic concentration of preprocessed tea polyphenol organic sewage to give tea polyphenol concentrated sewage containing 15-35% of solid by using reverse osmosis membrane in a manner of cross-flow filtering; 3) drying: drying tea polyphenol concentrated sewage to give powder which is feed additives; 4) Circulation use of infiltration water: Circulation using of infiltration water by filtering in membrane separation concentration process. Compared to conventional method, the method in the invention can save production cost and reduce energy consumption.

Description

technical field [0001] The invention relates to a method for preparing feed additives from tea polyphenol organic sewage. Background technique [0002] my country is the world's leading tea producer. In recent years, due to the relatively saturated demand in the international tea market and a slight oversupply, my country’s tea export situation is not optimistic and domestic sales prices have dropped. Therefore, extracting and utilizing functional ingredients in tea and opening up new uses for tea is a new direction for the development of the tea industry. . [0003] The medicinal value of tea has a long history, and the health function of tea can be traced back to "Shen Nong's Herbal Classic". The main ingredient with special medicinal value in tea is tea polyphenols (TeaPolyphenols, TP), which accounts for 20-35% of the dry weight of tea. Tea polyphenols have various pharmacological effects such as anti-aging, lowering blood lipid, anti-radiation, weight loss, and antise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/175A23K20/121A23K40/10
Inventor 周宇松逯庆国郭红燕
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH