EP0387126A1 - Verfahren und Anlage zur Herstellung von Kompost durch Behandlung von Hausmüll - Google Patents

Verfahren und Anlage zur Herstellung von Kompost durch Behandlung von Hausmüll Download PDF

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Publication number
EP0387126A1
EP0387126A1 EP90400521A EP90400521A EP0387126A1 EP 0387126 A1 EP0387126 A1 EP 0387126A1 EP 90400521 A EP90400521 A EP 90400521A EP 90400521 A EP90400521 A EP 90400521A EP 0387126 A1 EP0387126 A1 EP 0387126A1
Authority
EP
European Patent Office
Prior art keywords
materials
station
pulper
wringing
screen
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Withdrawn
Application number
EP90400521A
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English (en)
French (fr)
Inventor
Gabriel Royal
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.)
Tes Sa
Original Assignee
Tes Sa
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 Tes Sa filed Critical Tes Sa
Publication of EP0387126A1 publication Critical patent/EP0387126A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse

Definitions

  • the present invention relates to a method and a device for producing compost by treating household waste.
  • the usable part of the waste consists of organic matter which can be transformed into compost and therefore polluted with fine particles of plastic and glass sprayed during the grinding operation. These particles are extremely difficult to extract by the various sorting operations because they have a small particle size and a density comparable to that of the organic materials constituting the compost. These materials considerably reduce the quality of the compost produced because, they can injure growers using the compost, or end up in harvested vegetables, especially in the case of vacuum collection.
  • the object of the present invention is to provide a high quality compost, that is to say having less than 20% of parasitic materials, and in particular less than 1% of light plastics.
  • the high quality compost produced in this way can be sold at a higher price than the compost produced today and gives rise to a high level of satisfaction among users.
  • the object of the present invention is to improve the quality of the compost obtained in household waste treatment plants, at low costs and with a large treatment capacity.
  • the method according to the present invention consists in carrying out an initial grinding of household refuse, then in carrying out a magnetic sorting and a screening.
  • the rejects coming from the screening undergo, in a secondary chain, a first densimetric sorting operation followed by wetting in a pulper and a wet filtering, the non-solubilized rejects being eliminated and the solubilized materials then being wrung out.
  • the partial spin is carried out with known devices such as grate and cloth filters.
  • the method according to the present invention consists in mixing the compostable materials coming from the main chain with the compostable materials coming from the secondary chain.
  • the materials found at the end of the main chain are essentially made up of organic waste (plants, food waste) while the materials coming from the secondary chain are mainly made up of fibrous waste (paper, cardboard, small dimensions ).
  • the mixture of these two materials makes it possible to produce a compost of very high quality, at the same time by its richness, by the absence of parasitic materials and its great capacity of water retention.
  • the liquid coming from the step of wringing out the solubilized materials as well as from the wringing of the insoluble refuse is recycled to feed the densimetric sorting as well as the pulper.
  • a liquid content in the compostable product produced by the secondary chain is maintained of around 50%. This liquid content facilitates mixing and avoids the addition of liquid in a later phase of maturation or fermentation.
  • the method implements two successive phases of wetting by the pulper and wet screening.
  • the rejection size of the second screen is smaller than the rejection size of the first screen.
  • the present invention also relates to a household waste treatment installation comprising a main chain of known type as well as a secondary chain connected to the secondary screen of the main chain.
  • the secondary chain includes a densimetric sorting device separating heavy materials from light materials, said light materials being directed to a pulper connected to a wet screening device, the soluble materials coming from the wet screening device being directed to a wringer.
  • said installation further comprises a mixer connected to the outlet of the main chain on the one hand and to the outlet of the secondary chain on the other hand.
  • the installation advantageously comprises a second pulper connected to the outlet of the wet screening device.
  • This second pulper is connected to a second wet screening device with finer screens.
  • the installation comprises a densimetric sorting device consisting of a tank containing a liquid of intermediate density between the heavy materials and the organic materials.
  • the main chain is supplied with household waste.
  • the waste is firstly introduced into a grinding station (1) reducing the various constituents into pieces whose size does not exceed 110mm. Ballistic refusals (3) of higher dimension are rejected towards a landfill (4).
  • the crushed materials are then introduced into a sorting station (2) rejecting the magnetic materials, in particular scrap metal, towards the discharge (4).
  • the materials which have not been eliminated in the two preceding stations are screened in a primary screen (5) and a secondary screen (6). Large rejects (7) eliminated by the primary screen (5) are sent to an incinerator (8) connected to a device for recovering heat (9).
  • the waste passing through the secondary screen of a frame of approximately 40mm is introduced into a ballistic station with blowing (10) allowing the elimination of average refusals (11) which are directed like the big refusals (7) towards the incinerator (8).
  • the following operation consists in operating a densimetric sorting (12) making it possible to separate the light waste which will be sent to a wringing station (13) from the heavy refuse (14) which is sent to the landfill (4).
  • the materials which have not been rejected by the main chain formed by the preceding stations, constitute the compostable material (14).
  • This compostable material emanating from the main chain mainly consists of food and plant waste as well as a small part of paper and cardboard.
  • the materials which have been eliminated by the secondary screen (6) are introduced into a densimetric sorting station (15) and feed a pulper (16).
  • a pulper (16) At the entrance to this pulper, there are approximately 16% of paper and cardboard, 0.6% of textile (threads, twine), 0.1% of glass and stones, 10% of organic matter, 5% of plastic, 0.5% of fine products, such as dust with a particle size less than 2mm, the rest being made up of liquids, in particular liquids used for densimetric sorting carried out at the station (15).
  • the pulper has the effect of softening paper and cardboard in order to make them more soluble.
  • the materials leaving the pulper (16) are introduced into a wet screening station (17) eliminating the non-solubilized materials, such as plastic, textiles and fragments of medium dimensions.
  • the solubilized materials are then spun in a wringing station (18) to form the compostable material (19) consisting essentially of paper and cardboard.
  • the compostable materials (14) from the main chain and the compostable materials (19) from the secondary chain are then mixed in a mixer (20) to form the immature compost (21).
  • the insoluble rejects (22) coming from the wet screening (17) are also spun in a spinning station (23) to then feed the incinerator (8).
  • the liquid recovered in the wringing stations (18) and (23) is reinjected into the densimetric sorting station (15) as well as into the pulper (16).
  • FIG. 2 very schematically represents a secondary chain in accordance with the present invention.
  • the pulper (16) consists of a cylindrical tank (30) into which materials from the densimetric sorting station (15) are continuously introduced.
  • the pulper (16) comprises a propeller (31) known by the name of a "LAMORL” type propeller. This special propeller creates strong turbulences fragmenting and disintegrating paper and cardboard.
  • the solubilized materials and the plastic and granular materials of small sizes are then conveyed by a conduit (32) in the wet screening station (17) constituted by automatic screen.
  • This automatic screen consists of a frame (33) having an arrival of materials (34).
  • An arm (35) supports a comb (36) and is actuated by a gear motor (37).
  • the comb (36) cooperates with a grid field (38) retaining the plastic materials and fragments of glass or pebbles of dimensions greater than about 2mm.
  • the solubilized materials cross the grid field (38) to enter a rejection tank (39) communicating with an ejector (40).
  • the outlet of the ejector (40) is connected via a conduit (41) to a wringing station (18).
  • This wringing station (18) consists of a continuous filter with automatic cleaning comprising an endless conveyor belt (42) circulating above a trough (43).
  • the endless belt (42) is made of viscose fibers from an upstream coil (44). This filter ensures separation of the solid elements suspended in the water to evacuate them in a relatively dry form towards an external tank.
  • the liquid containing the solubilized materials is poured onto the carpet by a chute (42).
  • the water is decanted by simple gravity.
  • the mass of accumulated solid is of a thickness such that the flow rate is substantially reduced, the level of the liquid rises in the trough. In doing so, it raises a float which actuates a switch and starts a motor moving the belt conveyor.
  • the advancement of the strip (42) releases a clean fraction through which the flow of liquid easily passes, resulting in a lowering of the level and therefore of the float causing the engine to stop.

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  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)
EP90400521A 1989-03-09 1990-02-26 Verfahren und Anlage zur Herstellung von Kompost durch Behandlung von Hausmüll Withdrawn EP0387126A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903083 1989-03-09
FR8903083A FR2644083B1 (fr) 1989-03-09 1989-03-09 Procede et installation de production de compost par traitement d'ordures menageres

Publications (1)

Publication Number Publication Date
EP0387126A1 true EP0387126A1 (de) 1990-09-12

Family

ID=9379522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400521A Withdrawn EP0387126A1 (de) 1989-03-09 1990-02-26 Verfahren und Anlage zur Herstellung von Kompost durch Behandlung von Hausmüll

Country Status (2)

Country Link
EP (1) EP0387126A1 (de)
FR (1) FR2644083B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668398A1 (fr) * 1990-10-25 1992-04-30 Otv D Procede et dispositif pour extraire la matiere organique contenue dans les dechets menagers.
FR2695046A1 (fr) * 1992-08-31 1994-03-04 Jean Jouve Procédé de triage des ordures ménagères consistant à séparer les matières plastiques les verres et les métaux des matières organiques réutilisables pour la fabrication de composts.
EP0628526A1 (de) * 1993-06-07 1994-12-14 S.T.R.A.P. S.r.l Verfahren und System zur Abfall-Behandlung
EP0680789A1 (de) * 1994-01-25 1995-11-08 Chin-Ching Yen Vorrichtung zur Entsorgung von Abfällen
ES2592806A1 (es) * 2016-07-20 2016-12-01 Despolimerización De Plásticos Residuales, S.L. Procedimiento para la valorización de restos vegetales mezclados con rafia de poliolefinas procedentes de cultivos hortícolas
CN109046760A (zh) * 2018-09-26 2018-12-21 攀钢集团攀枝花钢铁研究院有限公司 钒钛磁铁矿尾矿的回收利用方法
CN114082492A (zh) * 2021-11-18 2022-02-25 北方化学工业股份有限公司 烟花棉粒径控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436864A1 (de) * 1974-07-31 1976-02-19 Rheinstahl Ag Verfahren zur herstellung von koerpern, naemlich pressteilen oder extrudaten aus thermoplastisch verarbeitbaren stoffen
GB1513511A (en) * 1976-03-17 1978-06-07 Rech Geolog Miniere Methods and apparatus for separating fractions of incinerated refuse
FR2502031A3 (fr) * 1981-03-19 1982-09-24 Esmil Bv Crible rotatif
EP0263330A2 (de) * 1986-10-09 1988-04-13 Altvater & Co. GmbH Aus organischen Massen aufbereiteter Kompost und Verfahren zu dessen Herstellung
AT386771B (de) * 1986-10-24 1988-10-10 Voest Alpine Ag Verfahren zur aufbereitung von muell

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2436864A1 (de) * 1974-07-31 1976-02-19 Rheinstahl Ag Verfahren zur herstellung von koerpern, naemlich pressteilen oder extrudaten aus thermoplastisch verarbeitbaren stoffen
GB1513511A (en) * 1976-03-17 1978-06-07 Rech Geolog Miniere Methods and apparatus for separating fractions of incinerated refuse
FR2502031A3 (fr) * 1981-03-19 1982-09-24 Esmil Bv Crible rotatif
EP0263330A2 (de) * 1986-10-09 1988-04-13 Altvater & Co. GmbH Aus organischen Massen aufbereiteter Kompost und Verfahren zu dessen Herstellung
AT386771B (de) * 1986-10-24 1988-10-10 Voest Alpine Ag Verfahren zur aufbereitung von muell

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668398A1 (fr) * 1990-10-25 1992-04-30 Otv D Procede et dispositif pour extraire la matiere organique contenue dans les dechets menagers.
FR2695046A1 (fr) * 1992-08-31 1994-03-04 Jean Jouve Procédé de triage des ordures ménagères consistant à séparer les matières plastiques les verres et les métaux des matières organiques réutilisables pour la fabrication de composts.
EP0586316A2 (de) * 1992-08-31 1994-03-09 France Brevets Realisations (Sarl) Verfahren zum Sortieren von Hausmüll
EP0586316A3 (de) * 1992-08-31 1994-04-06 France Brevets Realisations Sa
EP0628526A1 (de) * 1993-06-07 1994-12-14 S.T.R.A.P. S.r.l Verfahren und System zur Abfall-Behandlung
EP0680789A1 (de) * 1994-01-25 1995-11-08 Chin-Ching Yen Vorrichtung zur Entsorgung von Abfällen
ES2592806A1 (es) * 2016-07-20 2016-12-01 Despolimerización De Plásticos Residuales, S.L. Procedimiento para la valorización de restos vegetales mezclados con rafia de poliolefinas procedentes de cultivos hortícolas
CN109046760A (zh) * 2018-09-26 2018-12-21 攀钢集团攀枝花钢铁研究院有限公司 钒钛磁铁矿尾矿的回收利用方法
CN109046760B (zh) * 2018-09-26 2021-04-20 攀钢集团攀枝花钢铁研究院有限公司 钒钛磁铁矿尾矿的回收利用方法
CN114082492A (zh) * 2021-11-18 2022-02-25 北方化学工业股份有限公司 烟花棉粒径控制方法

Also Published As

Publication number Publication date
FR2644083A1 (fr) 1990-09-14
FR2644083B1 (fr) 1993-08-27

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