WO1997022569A1 - Base material, growing medium and fertilizer all containing dairy waste products and processes for the manufacture thereof - Google Patents
Base material, growing medium and fertilizer all containing dairy waste products and processes for the manufacture thereof Download PDFInfo
- Publication number
- WO1997022569A1 WO1997022569A1 PCT/IE1996/000089 IE9600089W WO9722569A1 WO 1997022569 A1 WO1997022569 A1 WO 1997022569A1 IE 9600089 W IE9600089 W IE 9600089W WO 9722569 A1 WO9722569 A1 WO 9722569A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nutrient
- base material
- growing medium
- nutrient rich
- waste
- Prior art date
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
- C05F1/00—Fertilisers made from animal corpses, or parts thereof
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/40—Treatment of liquids or slurries
-
- 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
- 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
Definitions
- the present invention relates to a nutrient rich base material, a growing medium and a fertiliser, all based o dairy waste and to processes for manufacturing the nutrient rich base material, growing medium and fertiliser.
- the invention relates to a growing medium which is made from dairy waste composted with other organic materials and to a nutrient base fertiliser made from dairy waste which is dried and blended with inorganic compounds to produce a fertiliser.
- dairy waste refers, for example, to effluent from the manufacture of cheese, milk powder, casein, whey products, butter and dairy spreads.
- dairy waste is treated in a two stage sludge effluent plant and is disposed of by spreading onto agricultural land where it decomposes. While it has beneficial properties in terms of fertilisation and soil improvement, it also has deleterious effects in that nutrients in the waste are washed into the soil and leach into the water table and nearby rivers and streams causing pollution and loss of aquatic life. Furthermore, the waste is in the form of a liquid sludge which is difficult and expensive to handle.
- Organically derived nitrogen has an available component and a reserve component. Nitrogen is transferred from its reserve component to its available component by a process called nitrogen mineralisation. Only when nitrogen is mineralised can it be absorbed and utilised by plants. In an organic growing medium, the relative proportion of reserve nitrogen to available nitrogen and the speed at which mineralisation can take place are more important than levels of total nitrogen.
- growing media made with an organic nutrient base are adversely affected by irrigation or surplus overhead watering as can occur with the average user applying water with a watering can or hose. All the soluble, i.e. available nutrients, particularly nitrogen, can be flushed or leached out resulting in starved plants and poor growth.
- the seed germination performance of growing media with an organic nutrient base is poor.
- the high salt concentration created by the presence of organic nutrients has an inhibitory effect on seed germination and seedling root growth. So far as is known, a means of protection from this effect has never before been built into an organic growing medium.
- the present invention aims to provide an organic nutrient rich base material, a multi-purpose growing medium, a nutrient base fertiliser and methods for manufacturing the nutrient rich base material, growing medium and nutrient base fertiliser respectively.
- growing medium includes a medium capable of sustaining plant or root growth.
- nutrient rich base material is used herein to include the nutrient-supplying component of a growing medium.
- the nutrient base material is normally a synthetic granular composition containing nitrogen, phosphate, potassium salts and trace elements, which usually takes up less than 1% of the total volume of the medium.
- the nutrient base material is typically a bulky material such as composted animal manure.
- matrix material is used herein to include the substrate with which a nutrient base is mixed.
- the nature of the matrix material dictates the physical properties of the growing medium, for example its water permeability (or percolation index [PI]), and its air to water content (or air-filled porosity [AFP]).
- the invention accordingly provides a process for producing a nutrient rich material, the process comprising dewatering dairy food processing effluent to produce a nutrient rich base material having a solids content of between 20% and 30% by weight.
- the invention also provides a nutrient rich base material comprising dairy food processing effluent having a solids content of between 20% and 30% by weight.
- the dairy food processing effluent may include dairy waste, meat waste, vegetable processing waste, waste from an industrial fermentation process, or a mixture of any thereof.
- the process may further include the step of mixing the nutrient rich base material with a matrix material to produce a growing medium.
- the matrix material comprises any one or more of the following group: composted bark, peat and lignite. Bark is especially useful as it opens up the compost, takes up nitrogen and absorbs smells.
- the nutrient rich base material and the matrix material are co-composted under aerobic conditions in a composting process to produce the growing medium.
- the composting process is carried out until such time as the temperature of compost does not exceed 43°C within 72 hours of the compost being disturbed.
- the process may includes the step of further drying the nutrient rich base material to approximately
- the process also includes the step of adding organic and/or inorganic nutrients to the dried nutrient rich base material so as to produce a nutrient base fertiliser.
- the drying step is carried out using a dryer of the pneumatic conveying type.
- superheated steam is used as the carrying medium in the dryer.
- the present invention also provides a growing medium comprising the nutrient rich base material co-composted with the matrix material including composted bark, peat and lignite.
- the present invention also provides a nutrient base fertiliser comprising the nutrient rich base material derived from dairy food processing effluent which has been dewatered to between 20-30% by weight solids content, and which has been further dried to approximately 90% solids by weight to form a dried nutrient base.
- a nutrient base fertiliser comprising the nutrient rich base material derived from dairy food processing effluent which has been dewatered to between 20-30% by weight solids content, and which has been further dried to approximately 90% solids by weight to form a dried nutrient base.
- organic and/or inorganic nutrients are added to the dried nutrient base to form the nutrient base fertiliser.
- Effluent from dairy processing plant is treated in a two stage activated sludge effluent plant and the nutrient rich sludge emerging from the plant has a solids content of approximately 2% by weight.
- the solids are then concentrated by a mechanical dewatering process to increase the solid content to between 20% to 30% by weight.
- the bark used in the matrix material is in the form of small chips, granules, or shreds, conveniently derived from coniferous species of trees such as spruce, larch or pine.
- the bark is matured, aged or composted prior to mixing with the dairy sludge.
- a nitrogen source such as poultry manure is added to the bark to facilitate the maturing, ageing, composting process, prior to mixing with the dairy effluent material.
- Peat is included in the matrix material to function as a pH buffer, for odour control and for its moisture holding capacity. Peat is widely used as a conventional base material in compost for its air filled porosity (AFP).
- AFP air filled porosity
- Lignite is incorporated into the matrix material to enhance the texture of the dairy sludge, bark and peat mixture. Lignite also provides a source of carbon to the growing medium.
- the components of the nutrient rich base material i.e. the dairy sludge, bark, peat and lignite are mixed, conditioned and stabilised by co-composting under aerobic conditions. This composting process is carried out until the temperature of the compost has stabilised. Temperature stabilisation occurs when the temperature of the compost no longer exceeds 43°C within 72 hours of being disturbed as a routine procedure in the composting process. When the composting process employs conventional mechanically turned windrows, a conditioning time of approximately 6 to 8 weeks is typical . The product at this stage is known as a (compost) growing medium.
- an enhanced growing medium can be produced by mixing the (compost) growing medium with a second matrix material.
- the second matrix material preferably comprises peat to which may be added one or more of non-peat matrix materials such as, for example sand, loam, perlite, coir, vermiculite, zeolite and certain crop-plant residue products such as leaf-litter, straw products, coffee wastes, or cocoa shells. It can then be milled and screened to standard specifications for a multi-purpose compost and packaged, as desired.
- the growing media of the invention have an excellent nutrient supplying capacity and do not suffer from the disadvantages of known growing media and in particular, those of sewage-based growing media.
- Optimising the quantities of nutrients in growing media is a notoriously difficult operation, especially when the growing medium is required for multipurpose use. Too little nutrient and plants starve, too much nutrient and the salinity levels rise rapidly to phytotoxic levels.
- the nutrient rich base material according to the present invention provides unusually high proportions of nutrient with no adverse effect on germination and plant growth salinity levels (>800 ⁇ S/cm 2 ) which in other growing media would result in severe phytotoxicity.
- Another major advantage of the growing media of the invention is that its nutrients are not susceptible to leaching. This may be due to the fat content of the dairy processing waste and the particular way in which the composted residue of the fat is integrated with the matrix, preventing nutrients from being flushed out or leached by excessive watering.
- the growing medium of the invention is suitable for seed sowing, rooting cuttings, container growing, and in general horticultural and amenity use.
- matrix material such as bark to the dairy processing waste also has the advantage of eliminating or reducing noxious odours from the waste. As such, the matrix material is useful as a means of waste treatment, irrespective of subsequent use of the combined material.
- Effluent from dairy food processing undergos standard primary and secondary treatment to produce an activated, nutrient-rich effluent sludge with approximately 2% solids.
- the solids are concentrated, by a mechanical de-watering process to produce a sludge of approximately 20% - 30% dry matter.
- the sludge is combined with bark, at source, as it is removed from the de-watering process. This is because bark has the added benefit of acting as an absorbent and bio-filter to absorb ammonia and noxious putrescence odours such as hydrogen sulphide gas. Without the bark for this purpose, any handling of the sludge material once it starts to putrefy, and consequent disturbance of the noxious odours, poses a series olfactory threat and, more seriously, a health threat to operatives from ammonia and volatile ammonia-based compounds.
- the bark and dairy-waste-sludge mix are augmented, with peat and non-peat matrix and/or nutrient rich base materials.
- the nutrient content may also be augmented when and wherever levels of such organically-permitted materials such as dried blood, hoof and horn, fishmeal, seaweed and trace element supplements etc.
- the dairy waste sludge (nutrient base) and chipped-shredded/grannulated bark combination is co-composted with peat and lignite (matrix material).
- the inclusion rate of peat and lignite at this stage can vary according to inconsistencies from one batch of bark and sludge and the next in their physical and chemical composition (for example moisture content and nitrogen levels respectively) . Values for the moisture content of the materials are important, as this directly affects the proposition of air available to initiate the compositing process.
- the standard inclusion rate of peat and lignite with the dairy-waste-sludge and bark is:
- Lignite 10% The composting process is aerobic (mechanically turned windrows) - although an identical finished product could be obtained with other aerobic composting methods and systems, e.g. by using in-vessel compost reactors) and deemed fully conditioned when the temperature of the material has stabilised. Temperature stabilisation occurs when the temperature of the material no longer exceeds 43°C.
- the conditioning time should be four to ten weeks, depending on ambient temperature, and preferably the conditioning time is six to eight weeks.
- the composted material is blended with a further addition of peat to create a range of growing media products, or bagged without any further additions to create a range of soil improve products, nominal styled, for example, "tree and shrub starter”, “rose feed”, “sports turf top dressing”, “root zone mix”, etc.
- peat to create a range of growing media products
- bagged without any further additions to create a range of soil improve products nominal styled, for example, "tree and shrub starter”, “rose feed”, “sports turf top dressing”, “root zone mix”, etc.
- the latter two products may be mixed with sharp sand at various inclusion rates according to the specifications required.
- Inorganic nutrients e.g. N.P.K
- a nutrient base fertiliser is produced firstly by dewatering dairy food processing effluent to 20%-30% dry solids as described in Example 1 , followed by drying the sludge to 90% dry solids.
- the drying is effected by means of a evaporative type drier.
- the dryer is of the pneumatic conveying type with superheated steam as the carrying medium.
- the superheated steam is formed from the evaporated moisture and is kept superheated by extracting heat from two heat exchangers, one in the recycle pipe and one in the duct where the sludge is simultaneously transported and dried.
- the heat exchangers are indirectly heated from a thermal oil unit which is gas fired.
- N Nitrogen
- P Phosphorus
- K Potassium
- Blends In order to apply these above blends to the soil in a proper manner the blended compounds have to be granulated.
- the blends are mixed, granulated, cooled, screened, sieved, bagged and despatched according to customer specification.
- Other compounds such as Silica Sand, Calcified Seaweed, Trace elements, fillers and binders are added as per customer specification.
- This dried dairy base fertiliser when blended with suitable compounds is suitable for use in agricultural, horticultural and amenity sectors.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Fertilizers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19960944127 EP0868414B1 (en) | 1995-12-18 | 1996-12-18 | Base material, growing medium and fertilizer all containing dairy waste products and processes for the manufacture thereof |
DE69608308T DE69608308T2 (en) | 1995-12-18 | 1996-12-18 | BASE MATERIAL, PLANT GROWTH MEDIUM AND FERTILIZER BASED ON MILK WASTE PRODUCTS AND METHOD FOR THE PRODUCTION THEREOF |
AU13968/97A AU1396897A (en) | 1995-12-18 | 1996-12-18 | Base material, growing medium and fertilizer all containing dairy waste products and processes for the manufacture thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IES950951 IES74258B2 (en) | 1995-12-18 | 1995-12-18 | Growing medium and a process for its manufacture |
IES950951 | 1995-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997022569A1 true WO1997022569A1 (en) | 1997-06-26 |
Family
ID=11041000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IE1996/000089 WO1997022569A1 (en) | 1995-12-18 | 1996-12-18 | Base material, growing medium and fertilizer all containing dairy waste products and processes for the manufacture thereof |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0868414B1 (en) |
AU (1) | AU1396897A (en) |
DE (1) | DE69608308T2 (en) |
IE (1) | IES74258B2 (en) |
WO (1) | WO1997022569A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2387841A (en) * | 2002-04-25 | 2003-10-29 | Bord Na Mona Plc | Growing medium free from peat and animal products |
CN106105467A (en) * | 2016-07-15 | 2016-11-16 | 山东胜伟园林科技有限公司 | A kind of desulfurated plaster combines the method for animal wastes improvement alkaline land soil |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2305623A1 (en) | 2009-08-18 | 2011-04-06 | Bräutigam, Theresia U. | Cocoa shell powder |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981002888A1 (en) * | 1980-04-03 | 1981-10-15 | Oxfam | Treatment of activated or humus sludge |
GB2185472A (en) * | 1986-01-20 | 1987-07-22 | Ivsd Avangard | Plant leaf feeding composition and method for the production thereof |
WO1989003369A1 (en) * | 1987-10-12 | 1989-04-20 | Veszprémi Vegyipari Egyetem | Improved process and equipment for purifying treatment and utilization of waste-waters from the dairy industry |
EP0535544A1 (en) * | 1991-10-04 | 1993-04-07 | MANEKO, spol. s r.o. | Process for treating sewage |
WO1993015026A1 (en) * | 1992-01-30 | 1993-08-05 | Chemring Group Plc | Effluent treatment process |
EP0588775A2 (en) * | 1992-09-11 | 1994-03-23 | Osuuskunta Tuottajain Maito | Process for utilizing dairy wastes |
WO1996012687A1 (en) * | 1994-10-19 | 1996-05-02 | Ceres Holdings Limited | Growing media |
-
1995
- 1995-12-18 IE IES950951 patent/IES74258B2/en not_active IP Right Cessation
-
1996
- 1996-12-18 WO PCT/IE1996/000089 patent/WO1997022569A1/en active IP Right Grant
- 1996-12-18 AU AU13968/97A patent/AU1396897A/en not_active Abandoned
- 1996-12-18 DE DE69608308T patent/DE69608308T2/en not_active Expired - Fee Related
- 1996-12-18 EP EP19960944127 patent/EP0868414B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981002888A1 (en) * | 1980-04-03 | 1981-10-15 | Oxfam | Treatment of activated or humus sludge |
GB2185472A (en) * | 1986-01-20 | 1987-07-22 | Ivsd Avangard | Plant leaf feeding composition and method for the production thereof |
WO1989003369A1 (en) * | 1987-10-12 | 1989-04-20 | Veszprémi Vegyipari Egyetem | Improved process and equipment for purifying treatment and utilization of waste-waters from the dairy industry |
EP0535544A1 (en) * | 1991-10-04 | 1993-04-07 | MANEKO, spol. s r.o. | Process for treating sewage |
WO1993015026A1 (en) * | 1992-01-30 | 1993-08-05 | Chemring Group Plc | Effluent treatment process |
EP0588775A2 (en) * | 1992-09-11 | 1994-03-23 | Osuuskunta Tuottajain Maito | Process for utilizing dairy wastes |
WO1996012687A1 (en) * | 1994-10-19 | 1996-05-02 | Ceres Holdings Limited | Growing media |
Non-Patent Citations (1)
Title |
---|
P. JELEN: "Reprocessing of whey and other dairy wastes for use as food ingredients", FOOD TECHNOLOGY, vol. 37, no. 2, 1983, CHICAGO, ILLINOIS,USA, pages 81 - 84, XP002028831 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2387841A (en) * | 2002-04-25 | 2003-10-29 | Bord Na Mona Plc | Growing medium free from peat and animal products |
CN106105467A (en) * | 2016-07-15 | 2016-11-16 | 山东胜伟园林科技有限公司 | A kind of desulfurated plaster combines the method for animal wastes improvement alkaline land soil |
Also Published As
Publication number | Publication date |
---|---|
DE69608308D1 (en) | 2000-06-15 |
EP0868414B1 (en) | 2000-05-10 |
IES74258B2 (en) | 1997-07-16 |
AU1396897A (en) | 1997-07-14 |
DE69608308T2 (en) | 2001-02-08 |
EP0868414A1 (en) | 1998-10-07 |
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