GB2050339A - Treating zootechnic liquids - Google Patents
Treating zootechnic liquids Download PDFInfo
- Publication number
- GB2050339A GB2050339A GB8014578A GB8014578A GB2050339A GB 2050339 A GB2050339 A GB 2050339A GB 8014578 A GB8014578 A GB 8014578A GB 8014578 A GB8014578 A GB 8014578A GB 2050339 A GB2050339 A GB 2050339A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid material
- muds
- zootechnic
- fermentation reactor
- fertilising
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
- C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Sustainable Development (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
In a process for converting zootechnic liquid material into combustible gases and fertilising muds the liquid material is kept under stirring within an air sealed vessel for from 10 to 20 days at from 30 DEG C to 40 DEG C.
Description
SPECIFICATION
Treating Zootechnic Liquids
The invention relates to a process for converting zootechnic liquid material into combustible gases and fertilising muds.
At large zootechnic farms, particularly at cattle and swine farms, there are produced large amounts of liquid materials, the disposal of which presents a serious problem, particularly for the high pollution that may derive therefrom. It is true that in some cases such zootechnic liquid materials can be used as fertilisers. This, however, necessitates the provision of very large collecting tanks for storage of the liquid materials until they are to be used, and specially constructed motor vehicles are required for transportation thereof to the site of use.
The invention provides a process for converting zootechnic liquid material into combustible gases and fertilising muds, the process comprising keeping zootechnic liquid material under stirring within an air sealed vessel for from 10 to 20 days at from 30"C to 40"C.
The invention is illustrated by the drawing, which is a schematic diagram of the process according to the invention.
Azootechnic liquid material from a pipe 1 is supplied to a tank 2 passing through a gridiron 3. By means of a submersible electropump 4 and a pipe 5 the liquid material is fed to a homogenisation tank 6 provided with a mechanical stirrer. From this tank 6 the liquid material is then supplied by a pump 7 and a pipe 8 to the top of a fermentation reactor 9, also
provided with a mechanical stirrer outlined in the
drawing. A fermentation reactor suitable for use in the process of the invention is described in detail in our copending Application No.
-At the top of the fermentation reactor 9 is a conduit 10 for the withdrawal of combustible gases formed within the reactor which, after passing through a condensate separator and depuration tower (not shown for the sake of simplicity), may be directly used, for example for heating or production of electric energy. From the base of the fermentation reactor 9, the fermenting liquid material is withdrawn through a pipe 11 and circulated by a pump 12 to a heat exchanger 13 and then recycled to the reactor9through return piping 14.
The heat exchanger 13 serves to maintain the liquid in the fermentation reactor 9 at a constant temperature. Should the fermentation process be continuous, the digested muds (those muds for which the fermentation cycle has been completed) are continuously discharged through a discharge outlet 15 provided near the top of the fermentation reactor 9. When a batch process is used, the muds may be discharged from the reactor bottom. The zootechnic liquid material (which, if bovine liquid material is treated, is first tritu rated to crumble straw contained therein and then coarsely screened, while, if swine liquid material is treated, is first merely coarsely screened) is held in the fermentation reactor 9 (which is air sealed) for about 10 to 20 days at a temperature of about 30"C to 40"C, preferably 35"C.
For bovine liquid material, an optimum holding time in the reactor 9 at a temperature of 35"C to complete the liquid material digestion is 15 to 20 days, while only 10 to 15 days suffice in the case of swine liquid material. The dry contents in the fermentation reactor 9 is desirably from 5% to 10% by weight of the total contents when bovine liquid material is treated.
Under these fermentation conditions, there will be within the fermentation reactor 9, a spontaneous development of anaerobic stocks (stocks of the same type could be added to the fermentation reactor 9 from the outside) which digest the liquid material developing combustible gases, the latter comprising on average about 70% methane and 30% carbon dioxide, which are withdrawn through the conduit 10, without need of pumps or the like, because of a slight overpressure of about 200 mm of water in the fermentation reactor 9. The muds formed within the fermentation reactor 9 and continuously or discontinuously discharged therefrom have a very high fertilising grade, the same as that of the starting material.These fertilising muds have also the property of being "balanced", that is having nitrogen, phosphorus and potassium contents within correct metering ranges for direct use as fertilizers.
The muds provided by the process according to the invention have further important characteristics in that they can be readily dehydrated (which enables bag-filling thereof, storage in reduced volumes and ready capability of transportation) and that they are water permeable (which enables water percolation through them when spread on land for manuring purposes). Moreover, the muds can be readily pumped (this facilitating the use for required soil fertilisation) due to the small size of the solid particles suspended therein and the reduced contents of volatile solids.
The equipment used in the invention is simple and of low cost; useful gases and easily handled fertilising muds are produced. Thus the disadvantages outlined above of directly using zootechnic liquid materials as fertilisers are obviated.
1. A process for converting zootechnic liquid material into combustible gases and fertilising muds, the process comprising keeping zootechnic liquid material under stirring within an air sealed vessel for from 10 to 20 days at from 30"C to 40"C.
2. A process according to claim 1 in which the temperature is maintained substantially constant at 35"C.
3. A process according to claim 1 or claim 2 in which the liquid material is kept in the vessel for from 15 to 20 days.
4. A process according to any preceding claims in which the dry contents in the vessel or container is maintained at from 5% to 10% by weight of the total contents of the vessel.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. A process for converting zootechnic liquid material into combustible gases and fertilising muds, the process comprising keeping zootechnic liquid material under stirring within an air sealed vessel for from 10 to 20 days at from 30"C to 40"C.
2. A process according to claim 1 in which the temperature is maintained substantially constant at 35"C.
3. A process according to claim 1 or claim 2 in which the liquid material is kept in the vessel for from 15 to 20 days.
4. A process according to any preceding claims in which the dry contents in the vessel or container is maintained at from 5% to 10% by weight of the total contents of the vessel.
5. A process for converting zootechnic liquid material into combustible gases and fertilising muds, the process being substantially as described herein with reference to the drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2248879A IT1113392B (en) | 1979-05-09 | 1979-05-09 | PROCEDURE FOR THE TRANSFORMATION OF ZOOTECHNICAL LIQUAMS IN COMBUSTIBLE GASES AND IN FERTILIZING MUD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2050339A true GB2050339A (en) | 1981-01-07 |
Family
ID=11196938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8014578A Withdrawn GB2050339A (en) | 1979-05-09 | 1980-05-02 | Treating zootechnic liquids |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS5665699A (en) |
| AR (1) | AR224402A1 (en) |
| AU (1) | AU5802380A (en) |
| BE (1) | BE883184A (en) |
| BR (1) | BR8002824A (en) |
| CH (1) | CH641746A5 (en) |
| DD (1) | DD150592A5 (en) |
| DE (1) | DE3017642A1 (en) |
| DK (1) | DK170880A (en) |
| ES (1) | ES491270A0 (en) |
| FI (1) | FI801349A (en) |
| FR (1) | FR2455848A1 (en) |
| GB (1) | GB2050339A (en) |
| GR (1) | GR67603B (en) |
| IN (1) | IN152493B (en) |
| IT (1) | IT1113392B (en) |
| MA (1) | MA18835A1 (en) |
| NO (1) | NO801364L (en) |
| PL (1) | PL224112A1 (en) |
| PT (1) | PT71193A (en) |
| SE (1) | SE8003431L (en) |
| YU (1) | YU123080A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6929744B2 (en) | 2000-05-12 | 2005-08-16 | United Utilites Plc | Sludge treatment at a mesophilic temperature |
| RU2796354C1 (en) * | 2022-10-28 | 2023-05-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) | Biogas unit |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8602652A (en) * | 1986-10-23 | 1988-05-16 | Promest Bv | METHOD FOR PROCESSING SLURRY. |
| AUPM452094A0 (en) * | 1994-03-17 | 1994-04-14 | University Of Queensland, The | Waste treatment plant and process |
| IT1400936B1 (en) * | 2010-07-08 | 2013-07-02 | Loppoli | IMPROVED PLANT FOR BIOGAS PRODUCTION. |
-
1979
- 1979-05-09 IT IT2248879A patent/IT1113392B/en active
-
1980
- 1980-04-22 GR GR61746A patent/GR67603B/el unknown
- 1980-04-22 DK DK170880A patent/DK170880A/en active IP Right Grant
- 1980-04-23 IN IN468/CAL/80A patent/IN152493B/en unknown
- 1980-04-23 CH CH311680A patent/CH641746A5/en not_active IP Right Cessation
- 1980-04-25 FI FI801349A patent/FI801349A/en not_active Application Discontinuation
- 1980-05-02 GB GB8014578A patent/GB2050339A/en not_active Withdrawn
- 1980-05-02 AU AU58023/80A patent/AU5802380A/en not_active Abandoned
- 1980-05-06 JP JP5874880A patent/JPS5665699A/en active Pending
- 1980-05-06 PT PT7119380A patent/PT71193A/en unknown
- 1980-05-07 SE SE8003431A patent/SE8003431L/en not_active Application Discontinuation
- 1980-05-08 MA MA19031A patent/MA18835A1/en unknown
- 1980-05-08 NO NO801364A patent/NO801364L/en unknown
- 1980-05-08 DE DE19803017642 patent/DE3017642A1/en not_active Withdrawn
- 1980-05-08 ES ES491270A patent/ES491270A0/en active Granted
- 1980-05-08 BR BR8002824A patent/BR8002824A/en unknown
- 1980-05-08 FR FR8010251A patent/FR2455848A1/en active Pending
- 1980-05-08 PL PL22411280A patent/PL224112A1/xx unknown
- 1980-05-08 BE BE0/200525A patent/BE883184A/en not_active IP Right Cessation
- 1980-05-09 YU YU123080A patent/YU123080A/en unknown
- 1980-05-09 AR AR28097280A patent/AR224402A1/en active
- 1980-05-09 DD DD80221007A patent/DD150592A5/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6929744B2 (en) | 2000-05-12 | 2005-08-16 | United Utilites Plc | Sludge treatment at a mesophilic temperature |
| RU2796354C1 (en) * | 2022-10-28 | 2023-05-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный аграрный университет" (ФГБОУ ВО Казанский ГАУ) | Biogas unit |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3017642A1 (en) | 1980-11-20 |
| PL224112A1 (en) | 1981-02-13 |
| SE8003431L (en) | 1980-11-10 |
| CH641746A5 (en) | 1984-03-15 |
| FR2455848A1 (en) | 1980-12-05 |
| ES8102071A1 (en) | 1981-01-16 |
| YU123080A (en) | 1983-01-21 |
| AU5802380A (en) | 1980-11-13 |
| JPS5665699A (en) | 1981-06-03 |
| GR67603B (en) | 1981-08-31 |
| BE883184A (en) | 1980-09-01 |
| IN152493B (en) | 1984-01-28 |
| PT71193A (en) | 1980-06-01 |
| AR224402A1 (en) | 1981-11-30 |
| MA18835A1 (en) | 1980-12-31 |
| DK170880A (en) | 1980-11-10 |
| IT1113392B (en) | 1986-01-20 |
| BR8002824A (en) | 1980-12-16 |
| DD150592A5 (en) | 1981-09-09 |
| IT7922488A0 (en) | 1979-05-09 |
| FI801349A (en) | 1980-11-10 |
| NO801364L (en) | 1980-11-10 |
| ES491270A0 (en) | 1981-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |