CA2056889C - A method of processing the wastewater-solids mixture that results from the production of paper and the use of this solids mixture - Google Patents
A method of processing the wastewater-solids mixture that results from the production of paper and the use of this solids mixture Download PDFInfo
- Publication number
- CA2056889C CA2056889C CA 2056889 CA2056889A CA2056889C CA 2056889 C CA2056889 C CA 2056889C CA 2056889 CA2056889 CA 2056889 CA 2056889 A CA2056889 A CA 2056889A CA 2056889 C CA2056889 C CA 2056889C
- Authority
- CA
- Canada
- Prior art keywords
- solids
- solids mixture
- waste
- production
- mixture
- 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.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/02—Working-up waste paper
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/241—Paper, e.g. waste paper; Paper pulp
- C04B18/243—Waste from paper processing or recycling paper, e.g. de-inking sludge
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
-
- 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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- 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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
-
- 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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Civil Engineering (AREA)
- Dispersion Chemistry (AREA)
- Structural Engineering (AREA)
- Paper (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Processing Of Solid Wastes (AREA)
- Disintegrating Or Milling (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a method of processing and re-using the mixture of waste water and solids that is generated during the processing of old paper, the sludge-like mixture of water and solids being intensively mixed and then coarse, fine, or very finely-ground, and it can then serve as the basic material for the production, for example, of paint, glue, putty, or mortar.
Description
- 2~56889 The present invention relates to a method of processing and re-using the mixture of waste water and solids that results from processing used paper.
During the production of paper, fillers are added to the pre-product, i.e., chemical pulp, wood, straw pulp, or rag pulp or old paper half stuff. These are intenAe~ to achieve a continuous surface and to improve the whiteness of the paper.
When processing old paper in order to obtain the old paper half stuff that is necessary for the production of paper, these fillers, which are added in their turn to this old paper during the production of paper, occur as waste product. This waste product consists, for example, of 50%-wt cellulose, 25%-wt kaolin, 20%-wt calcium carbonate, as well as small amounts of gypsum, titanium oxide, and other solids.
During the methods that were previously used to process old paper the method was such that these waste substances were removed from the process as a mixture of waste water and solids. Up to now, this has involved a pure waste product that consists of approximately 50%-wt water and approximately 15%-wt of solid substances that was then stored in dumps. The processing of this waste product, so as to render it fit for this type of storage, is costly. In addition, there are costs involved for transporting this waste product and finally, one has to consider 20~68~9 the dumping costs, for this waste product is not, for example, suitable for the earth dams used for safety embankments.
Some 100,000 tons of this waste product are generated each year in Holland, and this consists of 50%-wt solids and up to 50%-wt water.
The journal Das Papier ~Paper], 26/1972, reports on the disposal of the residual waste water sludge and adds that although the problem of separating the sludge water is considered as solved, the question of disposing of the sludge has not yet been resolved. Reference is made to the fact that during normal paper production, the residual waste water sludge can be used, for example, in brickyards as opening material in order to produce porous bricks, or that fireproof fibres can be extracted from the residual water sludge. Composting has also been employed as a way to reuse the sludge.
Wochenblatt fur papierfabrikation ~The Paper Production Weekly], 23/24, 1977 describes the reuse of ashes generated by waste water sludge.
The processing of the waste water sludge that occurs when old paper is processed has not as yet been described.
4 ~C) 5b ~f~)l It is the task of the present inventlon to descrlbe a way of reuslng thls waste product.
In order to solve thls task, whlch forms the basls for the present lnvention, lt is proposed that the sludge-like water-solids mixture is first intensively mixed and that then this mlxture of water and solid is coarsely, flnely, or very finely ground.
The present invention provides a process for the preparation of a waste solids mlxture arlslng during the preparatlon of waste paper whereln sald solids are substantially composed of cellulose, kaolin and calcium carbonate, said process comprising intenslvely mixing the solids mixture to reduce the size of the sollds partlcles. The waste sollds may be reused by adding a suitable addltlve to the waste solids. For example, in order to produce paint, addltlves such as acrylate, titanium whlte, chalk, gypsum, ammonla and water may be used.
The mlxture of the sludge-llke sollds mlxture ls necessary, for when it ls generated thls waste mlxture has not been intenslvely mixed but can conslst of very dlfferent solid lentils or solid conglomerates. The product has to be reduced, for a large number of fibre-like components are contained ln the sludge-llke solids mixture and these components preiudice subsequent re-use of the product. The product that ls elther ~o s~
4a fine-grained or coarse-grained, depending on lts intended use, can be obtained by appropriately metered reductlon of these fibre-like components.
The mixture of water and extremely fine particles of solids that is obtained in this manner can then be used as the starting substance for the production of various materials such as paint, glue, putty, or mortar. An important feature of this starting material are its thixotropic properties, which make it particularly suitable for the production of the substances enumerated above.
20~6889 As an embodiment, reference can be made to the fact that in order to produce paint one proree~C from the mixture of extremely fine solid particles according to the present invention, acrylate, titanium white, chalk, gypsum, ammonia and additional water being added to this mixture of extremely fine solid particles. The coarsc ~L ained mixture can be used as a starting substance deFDn~ing on the type of colour and, in particular, when it is used for a mortar.
Tests made with paint produced in this manner have shown that it is equal to all the demands made of modern paints that are applied by brushing, so that the appropriate re-use of the product, which can be regarded as a waste product, has been achieved.
During the production of paper, fillers are added to the pre-product, i.e., chemical pulp, wood, straw pulp, or rag pulp or old paper half stuff. These are intenAe~ to achieve a continuous surface and to improve the whiteness of the paper.
When processing old paper in order to obtain the old paper half stuff that is necessary for the production of paper, these fillers, which are added in their turn to this old paper during the production of paper, occur as waste product. This waste product consists, for example, of 50%-wt cellulose, 25%-wt kaolin, 20%-wt calcium carbonate, as well as small amounts of gypsum, titanium oxide, and other solids.
During the methods that were previously used to process old paper the method was such that these waste substances were removed from the process as a mixture of waste water and solids. Up to now, this has involved a pure waste product that consists of approximately 50%-wt water and approximately 15%-wt of solid substances that was then stored in dumps. The processing of this waste product, so as to render it fit for this type of storage, is costly. In addition, there are costs involved for transporting this waste product and finally, one has to consider 20~68~9 the dumping costs, for this waste product is not, for example, suitable for the earth dams used for safety embankments.
Some 100,000 tons of this waste product are generated each year in Holland, and this consists of 50%-wt solids and up to 50%-wt water.
The journal Das Papier ~Paper], 26/1972, reports on the disposal of the residual waste water sludge and adds that although the problem of separating the sludge water is considered as solved, the question of disposing of the sludge has not yet been resolved. Reference is made to the fact that during normal paper production, the residual waste water sludge can be used, for example, in brickyards as opening material in order to produce porous bricks, or that fireproof fibres can be extracted from the residual water sludge. Composting has also been employed as a way to reuse the sludge.
Wochenblatt fur papierfabrikation ~The Paper Production Weekly], 23/24, 1977 describes the reuse of ashes generated by waste water sludge.
The processing of the waste water sludge that occurs when old paper is processed has not as yet been described.
4 ~C) 5b ~f~)l It is the task of the present inventlon to descrlbe a way of reuslng thls waste product.
In order to solve thls task, whlch forms the basls for the present lnvention, lt is proposed that the sludge-like water-solids mixture is first intensively mixed and that then this mlxture of water and solid is coarsely, flnely, or very finely ground.
The present invention provides a process for the preparation of a waste solids mlxture arlslng during the preparatlon of waste paper whereln sald solids are substantially composed of cellulose, kaolin and calcium carbonate, said process comprising intenslvely mixing the solids mixture to reduce the size of the sollds partlcles. The waste sollds may be reused by adding a suitable addltlve to the waste solids. For example, in order to produce paint, addltlves such as acrylate, titanium whlte, chalk, gypsum, ammonla and water may be used.
The mlxture of the sludge-llke sollds mlxture ls necessary, for when it ls generated thls waste mlxture has not been intenslvely mixed but can conslst of very dlfferent solid lentils or solid conglomerates. The product has to be reduced, for a large number of fibre-like components are contained ln the sludge-llke solids mixture and these components preiudice subsequent re-use of the product. The product that ls elther ~o s~
4a fine-grained or coarse-grained, depending on lts intended use, can be obtained by appropriately metered reductlon of these fibre-like components.
The mixture of water and extremely fine particles of solids that is obtained in this manner can then be used as the starting substance for the production of various materials such as paint, glue, putty, or mortar. An important feature of this starting material are its thixotropic properties, which make it particularly suitable for the production of the substances enumerated above.
20~6889 As an embodiment, reference can be made to the fact that in order to produce paint one proree~C from the mixture of extremely fine solid particles according to the present invention, acrylate, titanium white, chalk, gypsum, ammonia and additional water being added to this mixture of extremely fine solid particles. The coarsc ~L ained mixture can be used as a starting substance deFDn~ing on the type of colour and, in particular, when it is used for a mortar.
Tests made with paint produced in this manner have shown that it is equal to all the demands made of modern paints that are applied by brushing, so that the appropriate re-use of the product, which can be regarded as a waste product, has been achieved.
Claims (13)
1. A process for the preparation of a waste solids mixture arising during the preparation of waste paper wherein said solids are substantially composed of cellulose, kaolin and calcium carbonate, said process comprising intensively mixing the solids mixture to reduce the size of the solids particles.
2. The process according to claim 1 further comprising adding a suitable additive to the waste solids so that the waste solids may be reused.
3. A process according to claim 1, wherein the solids mixture is reduced by intensive agitation.
4. A process according to claim 1, wherein the solids particles are finely ground.
5. A process according to claim 1, wherein the solids mixture is dewatered before mixing and reduction.
6. A process according to any one of claims 1 to 5, wherein the solids mixture is additionally supplemented with water before mixing and reduction.
7. The use of the finely or coarsely ground solids mixture prepared according to any one of claims 1 to 5, as a base material for the production of colouring matter.
8. The use according to claim 7, wherein said colouring matter is paint.
9. The use of the fine-ground solids mixture prepared according to any one of claims 1 to 5, as a base material for the production of an adhesive.
10. The use according to claim 9, wherein said adhesive is glue.
11. The use of the finely ground solids mixture prepared according to any one of claims 1 to 5, as a base material for the 0production of filler.
12. The use according to claim 11, wherein said filler is putty.
13. The use of the solids mixture prepared according to any one of claims 1 to 5, as an additive for mortar or plaster.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4040818.3 | 1990-12-20 | ||
| DE4040818 | 1990-12-20 | ||
| DE19914108866 DE4108866C1 (en) | 1990-12-20 | 1991-03-16 | |
| DEP4108866.2 | 1991-03-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2056889A1 CA2056889A1 (en) | 1992-06-21 |
| CA2056889C true CA2056889C (en) | 2001-03-20 |
Family
ID=25899539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2056889 Expired - Fee Related CA2056889C (en) | 1990-12-20 | 1991-12-03 | A method of processing the wastewater-solids mixture that results from the production of paper and the use of this solids mixture |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0492121B1 (en) |
| JP (1) | JP2977352B2 (en) |
| AT (1) | ATE126182T1 (en) |
| CA (1) | CA2056889C (en) |
| DE (2) | DE4108866C1 (en) |
| DK (1) | DK0492121T3 (en) |
| ES (1) | ES2075307T3 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6921994A (en) * | 1993-05-26 | 1994-12-20 | Tran Industrial Research Inc. | Utilization of deinking by-product in building materials |
| DE4341412C2 (en) * | 1993-12-04 | 2003-07-24 | Voith Paper Fiber Systems Gmbh | Process for processing waste paper containing filler |
| AU1310995A (en) * | 1994-01-03 | 1995-08-01 | F.L. Smidth & Co A/S | Method for manufacturing of a filler material |
| GB9606638D0 (en) * | 1996-03-29 | 1996-06-05 | Ecc Int Ltd | Treatment of solid containing material derived from effluent |
| DE19627523C1 (en) | 1996-07-09 | 1997-10-23 | Alpha Calcit Fuellstoff Gmbh | Preparation of filler or pigment coating material for paper, pulp or board from waste sludge |
| DE19750997A1 (en) * | 1997-11-18 | 1999-05-27 | Rigips Gmbh | Plastering mortar |
| AT501868B1 (en) | 2005-06-13 | 2007-04-15 | Andritz Ag Maschf | METHOD FOR THE RECYCLING OF FILLERS AND PIGMENTS OF PAPER, PAPER OR CARTON MANUFACTURING |
| CN105271310B (en) * | 2015-10-13 | 2017-05-10 | 锦州钛业有限公司 | Chlorination-process titanium-white high-salt wastewater comprehensive utilization method |
| CN111841761B (en) * | 2020-07-22 | 2021-09-10 | 山东蒙福居装饰材料有限公司 | Anti-cracking putty powder and preparation method and preparation system thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52153871A (en) * | 1976-06-17 | 1977-12-21 | Sato Yoshiaki | Fixation of pulp sludge |
| JPS5432567A (en) * | 1977-08-17 | 1979-03-09 | Ando Yoshiichirou | Method of making waterproof and flameeresistant building material from paper sludge |
| DE2930602A1 (en) * | 1979-07-27 | 1981-02-19 | Muenster L Graf Zu Handel | METHOD FOR BINDING WASTEWATER AND SLUDGE |
| JPS5913659A (en) * | 1982-07-14 | 1984-01-24 | 北川 重雄 | Manufacture of refractory construction material and structural raw material using used paper pulp sludge |
-
1991
- 1991-03-16 DE DE19914108866 patent/DE4108866C1/de not_active Expired - Lifetime
- 1991-11-16 DK DK91119573T patent/DK0492121T3/en active
- 1991-11-16 ES ES91119573T patent/ES2075307T3/en not_active Expired - Lifetime
- 1991-11-16 AT AT91119573T patent/ATE126182T1/en not_active IP Right Cessation
- 1991-11-16 DE DE59106223T patent/DE59106223D1/en not_active Expired - Fee Related
- 1991-11-16 EP EP19910119573 patent/EP0492121B1/en not_active Expired - Lifetime
- 1991-12-03 CA CA 2056889 patent/CA2056889C/en not_active Expired - Fee Related
- 1991-12-04 JP JP32057991A patent/JP2977352B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59106223D1 (en) | 1995-09-14 |
| JP2977352B2 (en) | 1999-11-15 |
| JPH04267953A (en) | 1992-09-24 |
| ES2075307T3 (en) | 1995-10-01 |
| EP0492121B1 (en) | 1995-08-09 |
| ATE126182T1 (en) | 1995-08-15 |
| EP0492121A1 (en) | 1992-07-01 |
| DE4108866C1 (en) | 1992-03-12 |
| DK0492121T3 (en) | 1995-12-11 |
| CA2056889A1 (en) | 1992-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |