EP0000195A1 - Procédé pour le traitement des boues ou des cendres, en particulier des boues de clarification ou des cendres de boues de clarification - Google Patents

Procédé pour le traitement des boues ou des cendres, en particulier des boues de clarification ou des cendres de boues de clarification Download PDF

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Publication number
EP0000195A1
EP0000195A1 EP78100246A EP78100246A EP0000195A1 EP 0000195 A1 EP0000195 A1 EP 0000195A1 EP 78100246 A EP78100246 A EP 78100246A EP 78100246 A EP78100246 A EP 78100246A EP 0000195 A1 EP0000195 A1 EP 0000195A1
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EP
European Patent Office
Prior art keywords
sewage sludge
ashes
ash
sewage
temperature treatment
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.)
Granted
Application number
EP78100246A
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German (de)
English (en)
Other versions
EP0000195B1 (fr
Inventor
Horst Dr.-Ing. Huck
Harald Dr. Dipl. Landwirt Munk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAARBERG FERNWAERME GmbH
Saarberg-Fernwarme GmbH
Thomasphosphatfabriken GmbH
Original Assignee
SAARBERG FERNWAERME GmbH
Saarberg-Fernwarme GmbH
THOMASPHOSPHATFABRIKEN GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAARBERG FERNWAERME GmbH, Saarberg-Fernwarme GmbH, THOMASPHOSPHATFABRIKEN GmbH filed Critical SAARBERG FERNWAERME GmbH
Publication of EP0000195A1 publication Critical patent/EP0000195A1/fr
Application granted granted Critical
Publication of EP0000195B1 publication Critical patent/EP0000195B1/fr
Expired legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
    • 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

Definitions

  • the invention relates to a process for the treatment of sewage sludge or sewage sludge ash which contains mineral fertilizer components which are difficult to obtain for plants.
  • a sewage sludge is the end product, which is usually either burned, thickened or composted with household waste.
  • the value of these sewage sludges as fertilizers is impaired by the fact that the mineral fertilizer components contained in them, especially the phosphate compounds such as iron, aluminum or calcium phosphates, are not fully available to the plants as fertilizers due to their chemical bonding. are, d. that is, the plants are only imperfectly able to absorb these mineral fertilizer components.
  • the object of the invention is to develop a method which makes it possible to produce high-quality fertilizers from sewage sludge or sewage sludge ash.
  • This object is achieved in that the sewage sludge or sewage sludge ash is subjected to a high-temperature treatment in the presence of one or more disintegrants, in which the fertilizer components which are not available to plants are converted into those which are available to plants.
  • the sewage sludge or sewage sludge ash according to the invention By treating the sewage sludge or sewage sludge ash according to the invention with a suitable disintegrating agent, it chemically reacts with the fertilizer component not available to the plants in the course of a high-temperature treatment. that substances are formed which are now available to the plants as fertilizers, it is possible to produce a high-quality thinner from less valuable sewage sludge or sewage sludge ash.
  • the iron, calcium and aluminum phosphates are suitable as disintegrants, in particular substances such as Na 2 CO 3 , CaO, Ca (OH) 2 , Mg0 and Mg SO 4 .
  • the corresponding plant-available CaNaPO 4 can be obtained from the poorly plant-available iron, calcium and aluminum phosphates.
  • Mg salts As a disintegrant, the readily plant-available Mg (PO 4 ) 2 is formed , while when using Ca0 as a disintegrant, calcium silicosophosphates, which are readily available to the plants, are formed, since the sewage sludge or its ashes always contain a high amount of Si O 2 .
  • the necessary addition of these disintegrants fluctuates greatly depending on the composition of the sewage sludge or sewage sludge ash and is generally between 5 and 40% based on the mixture.
  • a degree of digestion of 73% is obtained by adding 20% soda; in the case of sludge, on the other hand, with a P 2 O 5 content of 8% in the ashes, 5.7% soda is sufficient for a degree of digestion of 74%.
  • both sewage sludge and sewage sludge ash can be fed to the high-temperature treatment in the presence of disintegrating agents.
  • sewage sludge ash is to be understood as meaning both the solid residue which arises in the sewage sludge incineration and in the sewage sludge gasification to produce a fuel gas.
  • the treatment of the sewage sludge ash can take place in the melt, preferably in a so-called melting chamber furnace, the mass transfer in the melt being higher than in the solid phase, which leads to a shortening of the reaction times.
  • the high-temperature treatment of the sewage sludge or sewage sludge ash can also be carried out in other furnaces, for example in rotary drum furnaces, rotary tubular furnaces, muffle furnaces or fluidized bed furnaces.
  • Another method is to briquette the sewage sludge ash to be treated with admixture of disintegrant and to mix the briquettes with hot iron slag for high-temperature treatment.
  • the hot slag serves as a source of heat for the chemical. Implementation in the briquette between ash and, for example, soda.
  • the heat content of the slag is transferred to the briquettes to be digested, so that the supply of external heat can advantageously be dispensed with.
  • the z. B. due to radiation up to 0.7 - 0.8 t ash briquettes can be brought to a temperature of about 800 ° C with I t slag.
  • Table 1 shows the result of two vegetation tests as an example of the success of the method according to the invention. This shows that a sewage sludge ash digested with soda has the same plant efficacy as the standard fertilizer Thomas phosphate.
  • the mineral fertilizer components available for plants such as B. contains iron, aluminum and calcium phosphates, fed via a line 1 to the plant and in a mixing plant 2 intensively with a suitable disintegrant, such as. B. Na 2 CO 3 , or. MgO, which the Mischbe via a line 3 and a metering device 4 container 2 is fed, mixed, then the mixture of sewage sludge and disintegrant is conveyed by means of a screw conveyor 5 in a fluidized bed furnace 6 and burned there at a temperature of about 900 ° C.
  • the combustion air is the fluidized bed furnace 6 via a line 7 and a preheater 8 and the required fuel, for. B. gas or oil, fed via a line 9.
  • the sludge is combusted and, at the same time, there is a chemical conversion of the non-plant-available phosphate compounds contained in the sewage sludge into phosphate compounds, which are now available to the plants and. are therefore particularly suitable as fertilizers.
  • the cleaned exhaust gas leaves the filter via a line 16, while the fine ash separated in the filter is drawn off via a line 17.
  • the ashes accumulating in the cyclone 12 and in the filter 15 can be used as high-quality fertilizers as a result of the conversion, according to the invention, of the non-plant-available fertilizer components into plants available after appropriate grinding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)
  • Treatment Of Sludge (AREA)
EP78100246A 1977-06-29 1978-06-27 Procédé pour le traitement des boues ou des cendres, en particulier des boues de clarification ou des cendres de boues de clarification Expired EP0000195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772729277 DE2729277A1 (de) 1977-06-29 1977-06-29 Verfahren zur behandlung von schlaemmen oder aschen, insbesondere von klaerschlamm oder klaerschlammaschen
DE2729277 1977-06-29

Publications (2)

Publication Number Publication Date
EP0000195A1 true EP0000195A1 (fr) 1979-01-10
EP0000195B1 EP0000195B1 (fr) 1982-04-21

Family

ID=6012645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100246A Expired EP0000195B1 (fr) 1977-06-29 1978-06-27 Procédé pour le traitement des boues ou des cendres, en particulier des boues de clarification ou des cendres de boues de clarification

Country Status (6)

Country Link
EP (1) EP0000195B1 (fr)
JP (1) JPS5445272A (fr)
AT (1) AT361414B (fr)
DD (1) DD136133A5 (fr)
DE (1) DE2729277A1 (fr)
DK (1) DK292178A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715884A (en) * 1983-05-06 1987-12-29 Imperial Chemical Industries Plc Herbicidal cyclohexane-1,3-dione derivatives
US5302179A (en) * 1991-09-11 1994-04-12 Astec Industries, Inc. Method and apparatus for producing useful soil products from waste products
EP1767509A1 (fr) * 2004-06-21 2007-03-28 Sanki Engineering Co., Ltd Procédé et appareil pour la fabrication d'un fertisilant phosphaté en utilisant des cendres d'incinération
CN103649016A (zh) * 2011-06-27 2014-03-19 太平洋水泥株式会社 磷酸肥料及磷酸肥料的制造方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1134206B1 (fr) 2000-03-16 2013-05-15 GFR Gesellschaft für die Aufbereitung und Verwertung von Reststoffen mbH Utilisation des cendres d'incinération de boues d'égouts comme engrais phosphaté
DE10243840B4 (de) * 2002-09-13 2004-07-22 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren zur Abtrennung von umweltrelevanten Schwermetallen aus Klärschlammasche
DE102004059935A1 (de) 2004-12-09 2006-06-14 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren zur Abtrennung von Schwermetallen aus Klärschlammasche
DE102009014884B4 (de) 2009-03-25 2014-11-06 Ingeborg Klose Verfahren zur Eliminierung von Schadstoffen aus Klärschlamm und Verfahren zur Herstellung von Phosphaten und phosphathaltigen Verbindungen
DE102012015065B3 (de) * 2012-07-31 2013-07-18 Remondis Aqua Gmbh & Co. Kg Einstufiges Verfahren in einem Reaktor zur Umwandlung von Aluminiumphosphat in Kalziumphosphat
JP6021182B2 (ja) * 2012-12-14 2016-11-09 太平洋セメント株式会社 苦土りん酸肥料の製造方法
KR101782709B1 (ko) * 2013-05-03 2017-09-27 오토텍 (핀랜드) 오와이 인함유 출발 물질로부터 중금속들을 분리하는 방법 및 플랜트
JP6391142B2 (ja) * 2014-02-13 2018-09-19 太平洋セメント株式会社 りん酸質肥料の製造方法
DE102015115119A1 (de) * 2015-09-09 2017-03-09 Wehrle-Werk Ag Verfahren zur Phosphorrückgewinnung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB150375A (en) * 1919-04-29 1920-08-30 George Young Improvements in the utilization of sewage sludge for the production of a marketable manure and other products therefrom
US2139419A (en) * 1935-08-19 1938-12-06 Henry H Moreton Method of destroying sewage
US2655883A (en) * 1949-01-19 1953-10-20 Warren S Martin Apparatus for heat treatment of sewage sludge and method adapted to be carried out therein
FR1264788A (fr) * 1960-08-05 1961-06-23 Metallgesellschaft Ag Procédé pour la déshydratation et la destruction de boues présentant une forte teneur en substances organiques
FR2187707A1 (fr) * 1972-06-12 1974-01-18 Speichim
FR2237127A1 (fr) * 1973-05-07 1975-02-07 Ebara Infilco
FR2260549A1 (en) * 1974-02-11 1975-09-05 Saint Gobain Techn Nouvelles Treatment of effluents from animal rearing units - to give fertilizer products and reusable water for cleansing units
FR2338902A1 (fr) * 1976-01-22 1977-08-19 Nittetsu Kakoki Kk Procede d'evacuation d'effluents contenant des ions ammonium et sulfate et des substances organiques

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB150375A (en) * 1919-04-29 1920-08-30 George Young Improvements in the utilization of sewage sludge for the production of a marketable manure and other products therefrom
US2139419A (en) * 1935-08-19 1938-12-06 Henry H Moreton Method of destroying sewage
US2655883A (en) * 1949-01-19 1953-10-20 Warren S Martin Apparatus for heat treatment of sewage sludge and method adapted to be carried out therein
FR1264788A (fr) * 1960-08-05 1961-06-23 Metallgesellschaft Ag Procédé pour la déshydratation et la destruction de boues présentant une forte teneur en substances organiques
FR2187707A1 (fr) * 1972-06-12 1974-01-18 Speichim
FR2237127A1 (fr) * 1973-05-07 1975-02-07 Ebara Infilco
FR2260549A1 (en) * 1974-02-11 1975-09-05 Saint Gobain Techn Nouvelles Treatment of effluents from animal rearing units - to give fertilizer products and reusable water for cleansing units
FR2338902A1 (fr) * 1976-01-22 1977-08-19 Nittetsu Kakoki Kk Procede d'evacuation d'effluents contenant des ions ammonium et sulfate et des substances organiques

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715884A (en) * 1983-05-06 1987-12-29 Imperial Chemical Industries Plc Herbicidal cyclohexane-1,3-dione derivatives
US5302179A (en) * 1991-09-11 1994-04-12 Astec Industries, Inc. Method and apparatus for producing useful soil products from waste products
EP1767509A1 (fr) * 2004-06-21 2007-03-28 Sanki Engineering Co., Ltd Procédé et appareil pour la fabrication d'un fertisilant phosphaté en utilisant des cendres d'incinération
EP1767509A4 (fr) * 2004-06-21 2011-07-06 Sanki Eng Co Ltd Procédé et appareil pour la fabrication d'un fertisilant phosphaté en utilisant des cendres d'incinération
CN103649016A (zh) * 2011-06-27 2014-03-19 太平洋水泥株式会社 磷酸肥料及磷酸肥料的制造方法
EP2725001A1 (fr) * 2011-06-27 2014-04-30 Taiheiyo Cement Corporation Engrais phosphaté, et son procédé de production
EP2725001A4 (fr) * 2011-06-27 2015-01-07 Taiheiyo Cement Corp Engrais phosphaté, et son procédé de production

Also Published As

Publication number Publication date
AT361414B (de) 1981-03-10
EP0000195B1 (fr) 1982-04-21
DD136133A5 (de) 1979-06-20
DK292178A (da) 1978-12-30
JPS5445272A (en) 1979-04-10
ATA454078A (de) 1980-07-15
DE2729277A1 (de) 1979-01-04

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