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WO1993002800A1 - Procede et dispositif de traitement des matieres retenues par la grille dans des stations d'epuration - Google Patents

Procede et dispositif de traitement des matieres retenues par la grille dans des stations d'epuration Download PDF

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Publication number
WO1993002800A1
WO1993002800A1 PCT/EP1992/001716 EP9201716W WO9302800A1 WO 1993002800 A1 WO1993002800 A1 WO 1993002800A1 EP 9201716 W EP9201716 W EP 9201716W WO 9302800 A1 WO9302800 A1 WO 9302800A1
Authority
WO
WIPO (PCT)
Prior art keywords
screenings
mixing
liquid
trough
drainage
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.)
Ceased
Application number
PCT/EP1992/001716
Other languages
German (de)
English (en)
Inventor
Erich Fink
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1993002800A1 publication Critical patent/WO1993002800A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • 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
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/48—Washing granular, powdered or lumpy materials; Wet separating by mechanical classifiers
    • B03B5/52—Spiral classifiers
    • 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
    • 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
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly

Definitions

  • the invention relates to a method for processing screenings in sewage treatment plants, the degradable organic components being washed out of the screenings and fed to the clarification process and the remaining screenings being dewatered and compressed.
  • the invention also relates to an advantageous device for carrying out the method.
  • the screenings resulting from fine screens at the inlet of wastewater treatment plants are compacted and dewatered with screenings presses.
  • a rising discharge pipe immediately adjoins the screw conveyor leading out of the screen housing.
  • the friction stopper that forms in the discharge pipe causes the compaction and simultaneous dewatering of the screenings conveyed by the conveyor and dewatering screw.
  • This screenings press can be arranged under the discharge end of the fine screen and conveys the screenings directly into a collecting container.
  • all fixed components of the screenings are removed from the clarification process; only the water separated from the screenings with the waste materials dissolved in it gets back into the clarification process.
  • biodegradable organic components are predominantly water-soluble and can therefore be washed out of the screenings. It mainly concerns faeces, food residues as well as vegetable and animal substances.
  • the screenings are precompressed and partially dewatered in the process. Wash water is then added to the screenings spread out on a sieve tray in order to wash out the degradable organic constituents, since these constituents are predominantly water-soluble or at least can be washed out. The remaining screenings are compressed and dewatered in a briquetting press. The screenings briquettes thus formed are disposed of.
  • the object of the invention is therefore to design a method of the type mentioned in the introduction in such a way that a high proportion of the degradable organic constituents is washed out of the screenings. This effect should also be ensured if relatively large amounts of screenings are produced. In particular, those organic constituents are also to be washed out which are initially difficult to dissolve in the screenings, for example in animal or vegetable tissue parts which are not or not yet sufficiently digested for a washing-out process.
  • This object is achieved in that the screenings are mechanically crushed and mixed in a mixing trough with added water, and that the liquid with the solids contained therein is drawn off at the liquid surface of the mixing trough and subjected to a dewatering and compression process, the resulting liquid fed to the clarification process and the resulting compacted screenings are disposed of.
  • the mechanical crushing upstream of the washing process ensures that the entire screenings and so that the degradable organic constituents contained therein have such a small particle size that intimate contact with the wash water is inevitably ensured in the subsequent washing process.
  • the shredded screenings are mixed intensively with the wash water in the mixing trough, with further shredding taking place through the mixing process in the water. This forced mixing process significantly promotes the dissolving of the degradable organic components in the water.
  • the predominantly insoluble and non-degradable, predominantly inorganic components of the screenings are compressed, while the outflowing liquid, which contains the dissolved degradable organic components, is fed to the clarification process.
  • the clarification process receives a sufficient amount of degradable organic components, which is necessary to achieve the biological denitrification and the phosphate degradation in the clarification process.
  • the device according to the invention for carrying out the method has a washing device and a compaction device for the screenings and is characterized in that a mechanical comminution device is arranged above an open-top mixing pan, that at least one horizontal, driven mixing shaft equipped with mixing blades is arranged in the mixing pan is, and that the mixing trough near the liquid surface has an overflow edge, which is followed by an inlet for a drainage and compression device.
  • This device is of particularly simple construction and requires little space; it enables continuous operation and enables adaptation to different types of screenings. It has relatively few mechanically moving parts.
  • a particular advantage over known devices is that no pre-compression of the screenings is required before the washing process.
  • Compression device arranged directly next to the mixing trough. This results in a compact unit in which no transport devices between the mixing trough and the drainage and compression device are required.
  • Fig. 2 is a view of the device of FIG. 1 in the direction of arrow II and
  • Fig. 3 is a plan view of the device according to Figs. 1 and 2, wherein the sectional plane of Fig. 1 in Fig. 3 is indicated by the line I-I.
  • the device shown in the drawing is connected to a fine screen (not shown) in a biological sewage treatment plant.
  • the screenings which are screened out of the wastewater to be clarified by the Feinre ⁇ hen, fall into a feed hopper 1, which can be arranged directly below the discharge end of the fine screen.
  • the coarse components contained in the screenings such as stones, squares and the like, are separated by a coarse material separator 2 arranged in the funnel 1. Such a coarse material separator 2 is necessary if the coarse screen is not preceded by a coarse screen.
  • the Grobmaterialab ⁇ cheider 2 has an inclined perforated plate 3, which is resiliently received in the funnel 1 and is driven by a vibratory drive 4 in such a way that vibrating movements that the discharged coarse material is conveyed out of the side of the funnel 1 and via a slide 5 into a container 6 falls.
  • the screenings falling through the perforated plate 3 reach a mechanical shredding device 7 which is arranged under the hopper 1 and has two cutting rollers 8 driven in opposite directions.
  • the two cutting rollers 8 are each equipped with intermeshing knife disks 9, which shred the screenings through a large number of shearing processes.
  • the mechanical comminution device 7 is arranged above a mixing trough 10 which is open at the top and is filled with water.
  • a horizontal mixing shaft 12 equipped with mixing blades 11 is arranged in the mixing trough 10 and is driven by a geared motor 12a.
  • the mixing blades 11 rotating in the mixing trough 10 cause a mechanical swirling of the liquid, which covers the predominant space of the mixing trough 10, with the crushed screenings contained therein, as a result of which intensive mixing and further crushing of the screenings takes place.
  • the mixing trough 10 has an overflow edge 15, via which the liquid with the comminuted solids still contained therein flows into a drainage and compression device 16 arranged directly next to the mixing trough 10. Due to the intensive mixing and washing process, which is caused by the rotating mixing vanes 11 in the mixing trough 10, the shredded screenings have been opened up to such an extent that all soluble, degradable organic components contained therein are largely dissolved in the washing water or at least passed into a finely divided suspension are.
  • Compression device 16 has a trough-shaped sieve housing 17 arranged directly next to the mixing trough 10, under which a liquid drain 18 is arranged.
  • a conveyor and dewatering screw 20 driven by a geared motor 19 is arranged in the screen housing 17.
  • the screen housing 17 has a plurality of openings 21 on, which open into the liquid drain 18. Through these openings 21, the washing water with the degradable organic constituents contained therein in solution or suspension emerges from the sieve housing 17 and is fed to the biological clarification process via the liquid outlet 18.
  • the conveying and dewatering screw 20 conveys the predominantly inorganic components of the screenings remaining in the screen housing 17 to an axial end of the screen housing 17. There the end of the conveyor and dewatering screw 20 projects into a discharge pipe 22 for the remaining screenings.
  • the discharge pipe 22 is curved upwards and rises to a pipe bend 23, the discharge end of which is located above a container 24 for the residual screenings.
  • the screenings conveyed into the discharge pipe 22 form a friction stopper there, which causes the screenings to be compressed and thereby dewatered.
  • the described device for processing screenings can be arranged directly under the discharge end of a fine screen. If several fine screens are provided in a sewage treatment plant, a conveying and collecting device can be provided which collects the screenings from several fine screens and conveys them to a common device for washing out and compacting the screenings.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

Les matières retenues par la grille fine d'une station d'épuration sont broyées par des cylindres tranchants entraînés (8) dans un dispositif broyeur mécanique (7) et tombent dans une cuve de mélange (10) dans laquelle les matières broyées sont mélangées avec de l'eau et broyées davantage au moyen d'un arbre mélangeur entraîné (12) pourvu de pales mélangeuses (11). Le liquide s'écoule de la cuve de mélange (10) en passant par un bord de déversement (15) pour aboutir dans un système adjacent de déshydratation et de compression (16). L'eau avec les éléments organiques dégradables dissous qu'elle contient s'écoule à travers un boîtier de filtrage (17) et est épurée, alors que les matières solides résiduelles, surtout anorganiques, sont comprimées et déshydratées par une vis sans fin de transport et de déshydratation (20).
PCT/EP1992/001716 1991-08-02 1992-07-29 Procede et dispositif de traitement des matieres retenues par la grille dans des stations d'epuration Ceased WO1993002800A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914125565 DE4125565A1 (de) 1991-08-02 1991-08-02 Verfahren und vorrichtung zur aufbereitung von rechengut an klaeranlagen
DEP4125565.8 1991-08-02

Publications (1)

Publication Number Publication Date
WO1993002800A1 true WO1993002800A1 (fr) 1993-02-18

Family

ID=6437526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/001716 Ceased WO1993002800A1 (fr) 1991-08-02 1992-07-29 Procede et dispositif de traitement des matieres retenues par la grille dans des stations d'epuration

Country Status (3)

Country Link
AU (1) AU2386692A (fr)
DE (1) DE4125565A1 (fr)
WO (1) WO1993002800A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680789A1 (fr) * 1994-01-25 1995-11-08 Chin-Ching Yen Dispositif d'élimination de déchets
DE19536319A1 (de) * 1995-09-29 1997-04-03 Passavant Werke Verfahren und Einrichtung zum Waschen von organisch verunreinigtem Rechengut aus Kläranlageneinläufen
US7080650B1 (en) 2001-04-26 2006-07-25 Jwc Environmental Screenings washer
US7081171B1 (en) 2001-04-26 2006-07-25 Jwc Environmental Screenings washer
US7383842B1 (en) 2006-08-03 2008-06-10 Jwc Environmental Screenings washer apparatus
CN104174478A (zh) * 2013-07-31 2014-12-03 秦家运 生活垃圾水砍三分离装置
CN104314165A (zh) * 2014-11-05 2015-01-28 上海尼塔建筑景观设计有限公司 公园污水分离回收装置
CN107876192A (zh) * 2017-12-08 2018-04-06 金恩升 一种食品检测专用分体式榨汁机
CN108816467A (zh) * 2018-05-28 2018-11-16 南安市鸿博计算机技术有限公司 一种机加工生产用余料收集装置
CN109967179A (zh) * 2019-04-17 2019-07-05 杭州柔晴电子商务有限公司 一种甘草研磨装置
CN111636541A (zh) * 2020-05-28 2020-09-08 安徽金之杰机械科技有限责任公司 一种厂房防堵排水沟

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343380C2 (de) * 1993-12-18 2002-11-14 Utisol Technologies Ag Zug Rechengutpresse
FR3006907B1 (fr) * 2013-06-14 2017-07-28 Bernard Beaulieu Installation de tamisage d'un effluent charge de matieres en suspension

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1960828A1 (de) * 1969-02-14 1970-09-03 Seadun Trennung und Beseitigung von schwimmfaehigen Teilen aus Muell vor der nachfolgenden Weiterbehandlung
DE2362674A1 (de) * 1973-03-14 1974-09-26 Fmc Corp Vorrichtung zum abtrennen der festen und der fluessigen bestandteile aus einer schlamm fuehrenden fluessigkeit
DE2602306A1 (de) * 1976-01-22 1977-07-28 Adolf H Borst Verfahren zum mischen von abwasser und muell, zum trennen schwimmfaehiger und nicht schwimmfaehiger stoffe voneinander im abwasser und zum zerkleinern von muellgrobstoffen im abwasser und einrichtung zur durchfuehrung des verfahrens
DE2924306A1 (de) * 1979-06-15 1980-12-18 Manfred Braeuer Verfahren und vorrichtung zur aussortierung von schwermetallen, insbesondere von gold aus sand- und kieshaltigen lagerstaetten
DE3325504A1 (de) * 1983-07-15 1983-12-29 Peter 7869 Holzinshaus Voelskow Verfahren zur aufbereitung mit teilrecycling von hausmuell, sperrmuell, im wesentlichen aus verpackungsabfall bestehendem gewerbemuell und kommunalem klaerschlamm sowie einrichtungen zur ausuebung des verfahrens
EP0228724A2 (fr) * 1985-12-19 1987-07-15 DANECO DANIELI ECOLOGIA SpA Séparateur pour agrégats
WO1990008645A1 (fr) * 1989-01-24 1990-08-09 Hedemora Ab Appareil de traitement de materiau par egouttage et par pressage
DE9104551U1 (de) * 1991-04-13 1991-06-06 Bormet, Horst, 6108 Weiterstadt Siebrechen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1960828A1 (de) * 1969-02-14 1970-09-03 Seadun Trennung und Beseitigung von schwimmfaehigen Teilen aus Muell vor der nachfolgenden Weiterbehandlung
DE2362674A1 (de) * 1973-03-14 1974-09-26 Fmc Corp Vorrichtung zum abtrennen der festen und der fluessigen bestandteile aus einer schlamm fuehrenden fluessigkeit
DE2602306A1 (de) * 1976-01-22 1977-07-28 Adolf H Borst Verfahren zum mischen von abwasser und muell, zum trennen schwimmfaehiger und nicht schwimmfaehiger stoffe voneinander im abwasser und zum zerkleinern von muellgrobstoffen im abwasser und einrichtung zur durchfuehrung des verfahrens
DE2924306A1 (de) * 1979-06-15 1980-12-18 Manfred Braeuer Verfahren und vorrichtung zur aussortierung von schwermetallen, insbesondere von gold aus sand- und kieshaltigen lagerstaetten
DE3325504A1 (de) * 1983-07-15 1983-12-29 Peter 7869 Holzinshaus Voelskow Verfahren zur aufbereitung mit teilrecycling von hausmuell, sperrmuell, im wesentlichen aus verpackungsabfall bestehendem gewerbemuell und kommunalem klaerschlamm sowie einrichtungen zur ausuebung des verfahrens
EP0228724A2 (fr) * 1985-12-19 1987-07-15 DANECO DANIELI ECOLOGIA SpA Séparateur pour agrégats
WO1990008645A1 (fr) * 1989-01-24 1990-08-09 Hedemora Ab Appareil de traitement de materiau par egouttage et par pressage
DE9104551U1 (de) * 1991-04-13 1991-06-06 Bormet, Horst, 6108 Weiterstadt Siebrechen

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680789A1 (fr) * 1994-01-25 1995-11-08 Chin-Ching Yen Dispositif d'élimination de déchets
DE19536319A1 (de) * 1995-09-29 1997-04-03 Passavant Werke Verfahren und Einrichtung zum Waschen von organisch verunreinigtem Rechengut aus Kläranlageneinläufen
US7080650B1 (en) 2001-04-26 2006-07-25 Jwc Environmental Screenings washer
US7081171B1 (en) 2001-04-26 2006-07-25 Jwc Environmental Screenings washer
US7086405B1 (en) 2001-04-26 2006-08-08 Jwc Environmental Screenings washer
US7383842B1 (en) 2006-08-03 2008-06-10 Jwc Environmental Screenings washer apparatus
CN104174478A (zh) * 2013-07-31 2014-12-03 秦家运 生活垃圾水砍三分离装置
CN104314165A (zh) * 2014-11-05 2015-01-28 上海尼塔建筑景观设计有限公司 公园污水分离回收装置
CN104314165B (zh) * 2014-11-05 2015-12-09 上海尼塔建筑景观设计有限公司 公园污水分离回收装置
CN107876192A (zh) * 2017-12-08 2018-04-06 金恩升 一种食品检测专用分体式榨汁机
CN108816467A (zh) * 2018-05-28 2018-11-16 南安市鸿博计算机技术有限公司 一种机加工生产用余料收集装置
CN109967179A (zh) * 2019-04-17 2019-07-05 杭州柔晴电子商务有限公司 一种甘草研磨装置
CN111636541A (zh) * 2020-05-28 2020-09-08 安徽金之杰机械科技有限责任公司 一种厂房防堵排水沟

Also Published As

Publication number Publication date
AU2386692A (en) 1993-03-02
DE4125565A1 (de) 1993-02-04

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