WO2021090075A1 - Abattoir waste treatment method - Google Patents
Abattoir waste treatment method Download PDFInfo
- Publication number
- WO2021090075A1 WO2021090075A1 PCT/IB2020/051061 IB2020051061W WO2021090075A1 WO 2021090075 A1 WO2021090075 A1 WO 2021090075A1 IB 2020051061 W IB2020051061 W IB 2020051061W WO 2021090075 A1 WO2021090075 A1 WO 2021090075A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mixture
- abattoir
- water
- waste
- abattoir waste
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Definitions
- the invention relates to a method for treating abattoir waste and the production of amino acids from the aforementioned method.
- Some abattoir animal waste products which may include non-solids, are usually high in protein content, with an organic component due to the intestinal liquids and contents.
- the pH is increased by adding an alkaline agent.
- the alkaline agent is selected from any one or more of the group consisting of potassium hydroxide and sodium hydroxide.
- micro-organisms are added for biodegrading the mixture.
- the water is abattoir waste water.
- the abattoir waste water includes blood.
- a further step includes oxidizing the mixture with an oxidizing agent.
- the oxidizing agent is nitric acid.
- micro-organisms that are added are selected from any one or more of the group consisting of:
- a further step includes the adding of a catalyzer to the mixture for catalyzing microbial growth.
- the catalyzer for catalyzing microbial growth is a syrup.
- a further step includes agitating the mixture at time intervals.
- the method also includes the step of regulating the acidity and basicity of the mixture and / or abattoir waste.
- a further step includes removing amino acids and/or micro-organisms from the mixture.
- abattoir waste will be received from an abattoir for treatment thereof, or, alternatively be treated on the same site as the abattoir.
- the waste normally includes meat, intestines, lungs, heart, blood and manure (excluding bones).
- the high biologic content of the waste poses a health risk, and advantageously, contains substrate for the growth of micro-organisms which is selected for biodegrading and thereby, generating an amino acid containing liquid from the waste.
- a vessel normally a 1000-liter size bin.
- the abattoir waste can be broken down into smaller pieces. This breaking down the abattoir waste can be achieved by grinding the abattoir waste. This step of breaking down the abattoir waste can also include agitating the mixture.
- the pH of the mixture will be increased by adding 25 kg of an alkaline agent, normally potassium hydroxide or sodium hydroxide.
- the alkaline agent serves to break down protein in the waste into primary building blocks such as amino acids and peptides.
- the mixture is kept and stirred periodically in the vessel for about 48 hours, where after the mixture will have a resultant pH value in the region of 11 - 12.
- molasses used as a catalyzer for microbial growth
- 10 liters of a separately brewed biological composition of micro-organisms selected from the group consisting of Bacillus laterosporus, Bacillus thurgiensis, Trichoderma harzianum T22, Pseudomonas filourescens A505 and lactic acid culture with a colony-forming unit (“CFU”) of 10 9 for biodegrading the mixture.
- CFU colony-forming unit
- the mixture is further kept in the vessel for approximately 48 hours and continuously and / or periodically stirred or until such time as the pH value of the mixture measures about 6.5.
- the resulting mixture is oxidized by adding about 33 kg nitric acid (hydrogen nitrate) as oxidizing agent to the mixture, which serves to extract amino acids from the mixture. More water and blood, abattoir waste water normally includes blood, of about 250 liters is then added.
- nitric acid hydrogen nitrate
- This mixture is stirred periodically for a further 48 hours.
- the mixture can also be agitated at time intervals.
- the resulting mixture having a pH of about 1 .5, will comprise of amino acids and micro-organisms which can be drained from the vessel, where after the resulting solid contents may be utilized in composting.
- the invention is advantageous in that a novel method is disclosed for treating abattoir waste and simultaneously extracting protein building blocks such as amino acids from the waste which amino acids have shown to be beneficial in the microbial treatment of soil as well as the production of renewable energy.
- the invention is further advantageous in that value is added to materials which are considered to be waste.
Abstract
The invention relates to a method for treating abattoir waste. Pieces of abattoir waste obtained from an abattoir are mixed with water to form a mixture. The pH of the mixture is increased, Micro-organisms are added to the mixture and the mixture is oxidized. Amino acids and micro-organisms are removed from the mixture.
Description
ABATTOIR WASTE TREATMENT METHOD
Field of the invention
The invention relates to a method for treating abattoir waste and the production of amino acids from the aforementioned method.
Background to the invention
Farms, food processing plants, abattoirs and the like produce waste which needs to be treated in order to render it suitable for discharge into the environment. Abattoir waste management is a serious challenge for the abattoir industry.
Traditional methods to discard of biologic waste such as incineration, disposal at a waste disposal facility, burying and the like may be costly and due to environmental and health risks are not a first option for many abattoirs.
Some abattoir animal waste products, which may include non-solids, are usually high in protein content, with an organic component due to the intestinal liquids and contents.
Object of the invention
It is an object of the invention to provide a method for treating abattoir waste which, at least partially, alleviates the aforementioned difficulty.
Summary of the invention
According to the invention there is provided a method for treating abattoir waste comprising:
- mixing pieces of the abattoir waste with water to form a mixture;
- increasing the pH of the mixture;
- adding micro-organisms to the mixture; and
- oxidizing the mixture.
The pH is increased by adding an alkaline agent.
The alkaline agent is selected from any one or more of the group consisting of potassium hydroxide and sodium hydroxide.
The micro-organisms are added for biodegrading the mixture.
The water is abattoir waste water.
The abattoir waste water includes blood.
A further step includes oxidizing the mixture with an oxidizing agent.
The oxidizing agent is nitric acid.
The micro-organisms that are added are selected from any one or more of the group consisting of:
- Bacillus laterosporus;
- Bacillus thurgiensis;
- Trichoderma harzianum T22;
- Pseudomonas filourescens A505; and
- Lactic acid culture with a colony-forming unit of 109.
Prior to mixing the water with the pieces of abattoir waste, the water is aerated and / or stirred for the introduction of oxygen therein.
A further step includes the adding of a catalyzer to the mixture for catalyzing microbial growth.
The catalyzer for catalyzing microbial growth is a syrup.
A further step includes agitating the mixture at time intervals.
The method also includes the step of regulating the acidity and basicity of the mixture and / or abattoir waste.
A further step includes removing amino acids and/or micro-organisms from the mixture.
These and other features of the invention are described below.
Description of one embodiment of the invention
One embodiment of the invention is described below as an example only.
In practice, abattoir waste will be received from an abattoir for treatment thereof, or, alternatively be treated on the same site as the abattoir.
The waste normally includes meat, intestines, lungs, heart, blood and manure (excluding bones). The high biologic content of the waste poses a health risk, and advantageously, contains substrate for the growth of micro-organisms which is selected for biodegrading and thereby, generating an amino acid containing liquid from the waste.
Firstly, pieces of abattoir waste are placed into a vessel, normally a 1000-liter size bin. The abattoir waste can be broken down into smaller pieces. This breaking down the abattoir waste can be achieved by grinding the abattoir waste. This step of breaking down the abattoir waste can also include agitating the mixture.
Thereafter, 250 liters of water, which is abattoir waste water mixed with blood which has been aerated, is mixed with a volume of 500 liters of the pieces of abattoir waste to form a mixture.
Thereafter, the pH of the mixture will be increased by adding 25 kg of an alkaline agent, normally potassium hydroxide or sodium hydroxide. The alkaline agent serves to break down protein in the waste into primary building blocks such as amino acids and peptides.
At this stage, the mixture is kept and stirred periodically in the vessel for about 48 hours, where after the mixture will have a resultant pH value in the region of 11 - 12.
To the resulting, high-pH mixture, 50 liters of molasses (used as a catalyzer for microbial growth) is added as well as 10 liters of a separately brewed biological composition of micro-organisms selected from the group consisting of Bacillus laterosporus, Bacillus thurgiensis, Trichoderma harzianum T22, Pseudomonas filourescens A505 and lactic acid culture with a colony-forming unit (“CFU”) of 109 for biodegrading the mixture.
The mixture is further kept in the vessel for approximately 48 hours and continuously and / or periodically stirred or until such time as the pH value of the mixture measures about 6.5.
Thereafter, the resulting mixture is oxidized by adding about 33 kg nitric acid (hydrogen nitrate) as oxidizing agent to the mixture, which serves to extract amino acids from the mixture.
More water and blood, abattoir waste water normally includes blood, of about 250 liters is then added.
This mixture is stirred periodically for a further 48 hours. The mixture can also be agitated at time intervals.
At this stage, the resulting mixture, having a pH of about 1 .5, will comprise of amino acids and micro-organisms which can be drained from the vessel, where after the resulting solid contents may be utilized in composting.
Analysis of the composition p H OHM N% P% K% Ca% Na.mg/kg C% E.coli cfu/ml 0.5 50 1.83 0.03 0.7 0.04 602 208 <1
The invention is advantageous in that a novel method is disclosed for treating abattoir waste and simultaneously extracting protein building blocks such as amino acids from the waste which amino acids have shown to be beneficial in the microbial treatment of soil as well as the production of renewable energy.
The invention is further advantageous in that value is added to materials which are considered to be waste.
The invention is not limited to the precise detail as described herein. Many other embodiments are possible without departing from the scope of the invention.
Claims
1 . A method for treating abattoir waste comprising: mixing pieces of the abattoir waste with water to form a mixture; increasing the pH of the mixture; adding micro-organisms to the mixture; and oxidizing the mixture.
2. A method as claimed in claim 1 wherein the step of increasing the pH includes adding an alkaline agent.
3. A method as claimed in claim 2 wherein the alkaline agent is selected from any one or more of the group consisting of potassium hydroxide and sodium hydroxide.
4. A method as claimed in any one of the preceding claims wherein the micro organisms are added for biodegrading the mixture.
5. A method as claimed in any one of the preceding claims wherein the water is abattoir waste water.
6. A method as claimed in claims 5 wherein the abattoir waste water includes blood.
7. A method as claimed in any one of the preceding claims wherein the mixture is oxidized with an oxidizing agent.
8. A method as claimed in claim 7 wherein the oxidizing agent is nitric acid.
9. A method as claimed in any one of the preceding claims wherein the micro organisms are selected from any of or more of the group consisting of:
- Bacillus laterosporus;
- Bacillus thurgiensis;
- Trichoderma harzianum T22;
- Pseudomonas fluorescens A505; and
- Lactic acid culture with a colony-forming unit of 109.
10. A method as claimed in any one of the preceding claims wherein the water is aerated and/or stirred for the introduction of oxygen therein prior to mixing the water with the pieces of abattoir waste.
11 . A method as claimed in any one of the preceding claims wherein the method further includes the step of adding a catalyzer for catalyzing microbial growth.
12. A method as claimed in claim 11 wherein the catalyzer is a syrup.
13. A method as claimed in any one of the preceding claims including a further step of agitating the mixture at time intervals.
14. A method as claimed in any one of the preceding claims further including regulating the acidity and basicity of the abattoir waste and / or mixture.
15. A method as claimed in any one of the preceding claims further including the step of removing amino acids and/or micro-organisms from the mixture.
16. A method substantially as herein described.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA201807484 | 2019-01-15 | ||
| ZA2019/07420 | 2019-11-07 | ||
| ZA2019/07420A ZA201907420B (en) | 2019-01-15 | 2019-11-07 | Abattoir waste treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021090075A1 true WO2021090075A1 (en) | 2021-05-14 |
Family
ID=72958140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2020/051061 WO2021090075A1 (en) | 2019-01-15 | 2020-02-11 | Abattoir waste treatment method |
Country Status (2)
| Country | Link |
|---|---|
| WO (1) | WO2021090075A1 (en) |
| ZA (1) | ZA201907420B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT395226B (en) * | 1988-09-23 | 1992-10-27 | Hajdu Bihar Megyei Allatforgal | Process for the fermentation treatment of the byproducts and/or waste from slaughterhouses for producing feedstuff |
| WO2004108609A1 (en) * | 2003-06-06 | 2004-12-16 | Forskningscenter Risø | Fermentation media comprising wastewater and use hereof |
| KR100845195B1 (en) * | 2007-06-13 | 2008-07-10 | 한국과학기술원 | Treating method of slaughterhouse wastewater using sequencing batch bioreactor |
| CN101962622A (en) * | 2009-07-24 | 2011-02-02 | 许民强 | Complex bacteria inoculant for preparing organic fertilizer from effluents of animal slaughter houses and breeding plants serving as raw materials and preparation method thereof |
-
2019
- 2019-11-07 ZA ZA2019/07420A patent/ZA201907420B/en unknown
-
2020
- 2020-02-11 WO PCT/IB2020/051061 patent/WO2021090075A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT395226B (en) * | 1988-09-23 | 1992-10-27 | Hajdu Bihar Megyei Allatforgal | Process for the fermentation treatment of the byproducts and/or waste from slaughterhouses for producing feedstuff |
| WO2004108609A1 (en) * | 2003-06-06 | 2004-12-16 | Forskningscenter Risø | Fermentation media comprising wastewater and use hereof |
| KR100845195B1 (en) * | 2007-06-13 | 2008-07-10 | 한국과학기술원 | Treating method of slaughterhouse wastewater using sequencing batch bioreactor |
| CN101962622A (en) * | 2009-07-24 | 2011-02-02 | 许民强 | Complex bacteria inoculant for preparing organic fertilizer from effluents of animal slaughter houses and breeding plants serving as raw materials and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201907420B (en) | 2020-10-28 |
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