Method of processing waste water and recycling protein

A waste water treatment and protein technology, which is applied to the preparation method of peptides, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of high investment and operation costs, seldom used, high salt content of protein, etc., to achieve The economic and environmental benefits are obvious, the effects of promoting gastrointestinal absorption and reasonable nutritional structure of animals

Active Publication Date: 2010-01-13
烟台金润达动物营养有限公司
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used protein recovery method is spray drying technology. The advantage of this method is that almost 100% of the protein in the wastewater can be recovered. The disadvantage is that the initial protein content of recovery is too high (more than 20%), which restricts subsequent use as feed additives, etc. In addition, a large amount of exhaust gas is produced during the spray drying process, causing a certain degree of odor pollution
Reverse osmosis membrane technology, such as ultrafiltration, can also achieve good results when used to recover protein in wastewater, but it is rarely used due to its high investment and operating costs
Moreover, the production of chondroitin sulfate is often accompanied by a large amount of high-concentration production wastewater, which makes wastewater treatment difficult due to the special nature of the wastewater
Because its chemical oxygen demand (COD) value is generally higher than 100,000mg / L, but the inorganic nitrogen content is very low, that is, the nutritional structure of the wastewater composition is extremely unreasonable, and the wastewater is difficult to be treated by conventional activated sludge methods. High-concentration wastewater There is a huge environmental risk in the direct discharge of

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
  • Method of processing waste water and recycling protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Take a certain amount of chondroitin sulfate production wastewater, adjust the pH value of the wastewater to 3.5 with dilute hydrochloric acid, and prepare solution I;

[0019] (2) Make a certain amount of powdery calcium-based bentonite and diatomite and other active clay minerals into a paste with warm water, and then slowly add the above-mentioned prepared solution I to prepare solution II, wherein the active clay minerals are in solution II The mass concentration is 1%, and the stirring is continued for about 10 minutes at a certain speed;

[0020] (3) Slowly add the chitosan solution with a mass concentration of 0.5% to the obtained solution II under stirring, and continue stirring at a certain speed for 3-5 minutes to obtain solution III, wherein the concentration of chitosan in solution III 200mg / L;

[0021] (4) Slowly add polyaluminum chloride with a mass concentration of 1% to the obtained solution III under stirring, and continue stirring at a certain spe...

Embodiment 2

[0025] The difference between this embodiment and Example 1 is only: the pH value is adjusted to 9.5 in the step (1); the mass concentration of the active clay mineral in the step (2) in the solution is 10%; in the step (3) Adding mass concentration is the chitosan solution of 1.5%, and the concentration of chitosan in solution III is 1000mg / L;; In step (4), adding mass concentration is 10% polymerized polyaluminum sulfate solution, polyaluminum sulfate is in solution The concentration in IV was 800 mg / L.

Embodiment 3

[0027] The difference between this embodiment and Example 1 is only: the pH value is adjusted to 6 in the step (1); the mass concentration of the active clay mineral in the solution in the step (2) is 5%; in the step (3) Adding mass concentration is the chitosan solution of 1%, and the concentration of chitosan in solution III is 600mg / L;; Adding mass concentration in step (4) is the polyaluminum ferric sulfate solution of 5%, polyaluminum ferric sulfate is in The concentration in solution IV was 450 mg / L.

[0028] Take a chondroitin sulfate production enterprise in Yantai, Shandong Province as an example: the raw material is chicken cartilage, the production capacity of chondroitin sulfate is 300-500 kg / day, and the waste water production is 3-8 tons / day, of which the COD value of waste water is 120000mg / L, TOC value 84000mg / L, protein content 3-18% in the waste water, waste water treatment mode is to adopt cooling water to dilute and discharge to local sewage treatment plan...

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

No PUM Login to view more

Abstract

The invention relates to a method of processing waste water and recycling protein during the production of chondroitin sulfate, comprising the following steps: (1) adjusting the acidity; (2) adding powdery calcium-base bentonite; (3) adding chitosan: (4) adding polymeric aluminum; (5) filtering; and (6) drying and crushing. The invention has the advantages that bentonite of feedstuff is used as adsorbent to recycle the protein in the waste water from the production of the chondroitin sulfate, and the bentonite of feedstuff can be used as feedstuff additive; the chitosan which is polymeric flocculant can well process the protein in the waste water; after the protein in the waste water is recycled, the chemical oxygen demand (COD) of the waste water can be reduced by over 90 percent, and the subsequent low-concentration waste water can be easily processed by the conventional activated-sludge process; the waste water can be processed with simple process, the cost of investment is low, and the economic benefit and the environmental benefit are obvious.

Description

technical field [0001] The invention relates to the field of water treatment of environmental engineering, in particular to a method for wastewater treatment and protein recovery of chondroitin sulfate production. technical background [0002] Chondroitin sulfate is a mixture of 4-sulfate chondroitin, 6-sulfate, chondroitin A, B and other chondroitin sulfates extracted from the nasal bones, throat bones and other cartilages of pigs, cattle, sheep and other animals. Its trade name is "Kangdeling", its main use is to treat headache, migraine, arteriosclerosis, coronary heart disease, angina pectoris, myocardial hypoxia, myocardial infarction and other pharmaceutical agents, and it is also widely used in food and beverage And all kinds of health care products and nourishing products, the domestic demand is increasing day by day, and it is a very popular commodity in the domestic market. In recent years, with the continuous improvement of people's understanding of chondroitin s...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66C02F1/28C02F1/52C07K1/30A23K1/16A23K20/147
Inventor 盛彦清
Owner 烟台金润达动物营养有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap