WO2006136156A1 - Procédé et appareil pour la déshydratation de boues - Google Patents

Procédé et appareil pour la déshydratation de boues Download PDF

Info

Publication number
WO2006136156A1
WO2006136156A1 PCT/DK2006/000172 DK2006000172W WO2006136156A1 WO 2006136156 A1 WO2006136156 A1 WO 2006136156A1 DK 2006000172 W DK2006000172 W DK 2006000172W WO 2006136156 A1 WO2006136156 A1 WO 2006136156A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
liquid
sludge
permeable
movement
Prior art date
Application number
PCT/DK2006/000172
Other languages
English (en)
Inventor
Hans Larsen
Original Assignee
J.Hvidtved Larsen A/S
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 J.Hvidtved Larsen A/S filed Critical J.Hvidtved Larsen A/S
Priority to EP06722865A priority Critical patent/EP1907095A1/fr
Publication of WO2006136156A1 publication Critical patent/WO2006136156A1/fr
Priority to NO20076204A priority patent/NO20076204L/no

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/824—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
    • B30B9/062—Extrusion presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/06—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers
    • B30B9/067—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with permeable casings or strainers with a retractable abutment member closing one end of the press chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers

Definitions

  • the invention relates to a method of liquid expelling of mixtures or materials containing liquid, such as draining and/or dewatering of sludge by compressing the material, e.g. sludge with a piston, which is permeable to liquid.
  • the invention moreover relates to a apparatus for expelling liquid from mixtures or materials, which contains liquid, such as dewatering of sludge by compressing a liquid permeable piston.
  • Dewatering of sludge is typically used in connection with e.g. emptying of septic tanks.
  • sewer cleaning vehicles or gully emptiers are typically used, which are customized trucks, which contain the necessary remedies for the emptying process, such as e.g. pumps, reservoir tank etc.
  • a dewatering unit which expels liquid from sludge by compressing the sludge with a piston, which is in the top, similarly to the pressure surface, provided with holes, through which liquid from the sludge can be channeled out when the piston compresses the sludge.
  • the liquid permeable piston which is known from DE 299 04 504 has in practice turned out to be inappropriate to use for most types of sludge, since the holes in the top of the piston are clogged by the sludge.
  • the object of the invention is achieved by a method of the type stated in the introductory portion of claim 1 , which is characterized in that the piston on the pressure surface consists of a liquid permeable gap filter where the gaps for liquid expelling creates a transition between one or several fastened pins and one or several movable piston parts.
  • the advantage is achieved that the gap filters can be made self- cleaning, which adds to stabilize the efficiency of the process, increase the dependability and reduce maintenance costs of the new dewatering unit.
  • the piston on the side surface which is parallel with the piston's direction of movement, consists of a filter, which is permeable to liquid, e.g. in the shape of parallel gaps.
  • the invention also relates to a product.
  • This product is characterized in that the piston is provided with liquid permeable gap filters, which can automatically be cleaned by movement or by built-in jet nozzles and by the piston being controlled by hydraulics, which is mounted in a regenerative piping.
  • the advantage is achieved that the total capacity of the gully emptier is increased to a high extent.
  • Fig. 1 shows a principle sketch of the dewatering unit, where the liquid permeable piston is in the rearmost position.
  • Fig. 2 shows a principle sketch of the dewatering unit, where the liquid permeable piston is in a forward movement and is compressing sludge.
  • Fig. 3 shows a principle sketch of the dewatering unit, where the liquid permeable piston is in the frontal position.
  • Fig. 4 shows a principle sketch of the dewatering unit, where the liquid permeable piston is in a backwards movement.
  • Fig. 5 shows a principle sketch of an air operated pinch valve in closed state.
  • Fig. 6 shows a principle sketch of an air operated pinch valve in open state.
  • Fig. 7 shows, in a cross section, a principle sketch of the liquid permeable piston, where a movable holed plate in the piston's pressure surface is depicted in a forward placed position.
  • Fig. 8 shows, in a cross section, a principle sketch of the liquid permeable piston, where a movable holed plate in the piston's pressure surface is depicted in a retracted position.
  • Fig. 9 shows, seen at an angle from the front, the cylindrical side surface of the liquid permeable piston.
  • Fig. 10 shows a segment of the piston's liquid permeable side surface.
  • Fig. 11 shows a principle sketch of the cleaning of an inspection window, mounted in a reservoir tank for collection of sludge.
  • fig. 1 is with 1 shown a dewatering unit, where a liquid permeable piston 11 compresses sludge, which is lead to the dewatering unit via the feed inlet 7.
  • the sludge is lead to a pre-dewatering chamber 6, where the water in the sludge can be removed from the sludge by penetration with the piston's 11 liquid permeable side surface, and be channeled away from the dewatering unit 1 via the drain 9.
  • the piston 1 is, as indicated with the arrow 10, shown in its most backward position.
  • the dewatering unit 1 is provided with gaskets 5 and 8, which are partly used for sealing around the piston, but at the same time it rubs clean the piston, when it is moved.
  • gaskets solid gaskets manufactured in a polymeric material can be used, and so-called non-return flap gaskets can also be used.
  • the sludge is moved from the pre- dewatering chamber 6 to a so-called pressing chamber 4, where the compressed sludge 2 is gathered radially along the internal side surfaces of the pressing chamber 4, or forms a clog in front of the piston after falling down from the compressing chamber's 4 upper part, as a result of the force of gravity.
  • the dewatering unit's 1 outlet pipe is blocked by a valve 3, which in a preferred embodiment is a so-called pinch valve.
  • the pinch valve 3 has the specific characteristic that it first opens, when the pressure from the compressed sludge 2 in the pressure chamber 4 exceeds a given pressure.
  • This characteristic of the air operated pinch valve 3 means that the compressed sludge 2 can first be separated from the pressure chamber 4, when it has been compressed to a pressure, which is equal to or greater than the opening pressure of the pinch valve 3.
  • the piston compresses the sludge 12 to reach a pressure, which makes it possible to open the outlet valve 3, after which the dewatered sludge 13 can be removed from the dewatering unit 1.
  • the total dewatering efficiency can in this way be adjusted by adjusting the opening pressure on the pinch valve 3.
  • the liquid can be conducted away by penetration of the piston's 11 pressure surface, which is provided with gap filters, but it can also be removed through the side surface of the piston 11 , which is parallel to the piston's direction of movement, and which can also be provided with filters, which are permeable to liquid.
  • fig. 3 is shown the same principle sketch of the dewatering unit as in fig. 1 and fig. 2, but in fig. 3, the piston 11 is depicted in the frontal position indicated by the arrow 10. In the frontal piston position, the compression of the sludge 12 is thus completed.
  • fig. 4 is shown the same principle sketch of the dewatering unit, which also founds the basis of fig. 1 to fig. 3, but in fig. 4, the piston is shown in a backwards movement, as indicated by the arrow 10.
  • the piston 11 can be driven by several types of transmissions, including electrical linear actuators, but in a preferred embodiment, the movement of the piston is controlled by hydraulics.
  • fig. 5 a principle sketch of a pinch valve, which in a preferred embodiment is used as an outlet valve 3 in a dewatering unit 1.
  • the pinch valve consists of a bellow 15, which as in fig. 5 blocks the entrance opening 17 from the exit point opening 18.
  • the bellow 15 blocks with a specific pressure of a pressing air, gas or liquid, supplied via the valve 16.
  • fig. 6 In fig. 6 is shown a principle sketch of the pinch valve, which is also shown in fig. 5, but where the valve is now open, as indicated by the arrow 19.
  • the pinch valve opens when the pressure at 17 or 18 exceeds the internal pressure in the bellow 15, which is made by supply of a pressure creating medium through the valve 16.
  • the drawing in fig. 7 shows, in a cross section, the principle of the piston 11.
  • the piston pressure surface 20 consists of a movable circular holed plate 23, which can be moved between a number of filter pins 21.
  • the filter pins 21 are in a continuous interaction with each its hole in the holed plate 23, but the holed plate can me moved in relation to the pins 21 by activating the drive shaft 25, which can be powered by a hydraulic cylinder 26.
  • the liquid, which is removed from the sludge through the gaps 22 in the piston's pressure surface 20 are conducted away from the piston surface 20 via the drain pipe 41.
  • the piston's external side surface 27 is shaped like a series of parallel gap sieves, which follows parallel to the piston's 11 direction of movement.
  • the sieves as the mentioned parallel gap sieves in the piston's 11 side surface 27, can be cleaned automatically by applying jet nozzles 28.
  • jet nozzles 28 Via the jet nozzles 28, which can be placed on one or several means of mounting such as pipe pieces 29, liquid such as water can with pressure wash and/or flush the sieves clean from the internal side of the piston 11.
  • the drawing fig. 10 shows a section of the edge of the surface 27 of the piston 11 , which is shown in fig. 9. As it is seen from fig. 10, the parallel liquid permeable gaps in the piston's surface 27 emerge as the gaps between parallel placed rods 31.
  • the rods 31 are wedge-shaped, so that they are narrowed towards the center axis of the filter surface 27.
  • the parallel rods 31 which are the surface of the piston 11 , are as shown in fig. 10 in a preferred embodiment mounted on a series of parallel rings 30, placed internally in the piston 11.
  • FIG. 11 is in a cross section shown a principle sketch of an inspection window for e.g. the tank of a gully emptier, which stores sludge under underpressure.
  • the tank with underpressure has a side wall 32, which separates the internal side 35 from its outer side 34, from which it is often necessary to inspect the inner side of the tank 35.
  • the tank typically contains liquid 36 and slurry parts 27.
  • On the tank wall is, mounted in a fastening device 38, an inspection window 33, through which the content of the tank reservoir can be visually inspected.
  • the inspection window 33 can consist of glass or other materials such as transparent polymers.
  • the dewatering unit can also be provided with cleaning- and inspection hatches, where the inspection hatches are manufactured in a transparent material such as a polymer.
  • the inspection hatches are in a preferred embodiment mounted from the inside with sealing strips, which compresses and thereby increases the sealing, when the pressure increases in the dewatering unit. In order to ease mounting and dismantling of the inspectional hatches, these are manufactured to be oblong.
  • the invention is not limited to the embodiments, which can directly be derived from the present invention and the present drawings, but also includes all embodiments, which indirectly can be derived from the description and the drawings or by a combination of these.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

La présente invention a trait à la déshydratation de boues par la compression des boues à l'aide d'un piston perméable à un liquide à épuration autonome. La compression est également utilisée pour le transport des boues déshydratées. Dans un mode de réalisation préféré, le piston est équipé de filtres perméable au liquide sous la forme de filtres à intervalles tant sur la surface de pression que sur la surface latérale, qui sont parallèles à la direction de déplacement du piston. L'invention est essentiellement caractérisée en ce que le procédé de déshydratation de boues met en oeuvre des éléments à épuration autonome incorporés, qui assurent une fiabilité élevée et de faibles coûts d'entretien. Etant donné que le procédé de déshydratation est commandé par la pression de piston, l'efficacité du procédé de déshydratation peut être très élevée et entre autres être commandé par l'ouverture de la pression de la conduite de sortie de l'unité de déshydratation.
PCT/DK2006/000172 2005-05-12 2006-03-28 Procédé et appareil pour la déshydratation de boues WO2006136156A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP06722865A EP1907095A1 (fr) 2005-05-12 2006-03-28 Procédé et appareil pour la déshydratation de boues
NO20076204A NO20076204L (no) 2005-05-12 2007-12-03 Fremgangsmate og apparat for uttorking av slam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200500688 2005-05-12
DKPA200500688 2005-05-12

Publications (1)

Publication Number Publication Date
WO2006136156A1 true WO2006136156A1 (fr) 2006-12-28

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PCT/DK2006/000172 WO2006136156A1 (fr) 2005-05-12 2006-03-28 Procédé et appareil pour la déshydratation de boues

Country Status (3)

Country Link
EP (1) EP1907095A1 (fr)
NO (1) NO20076204L (fr)
WO (1) WO2006136156A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009072978A1 (fr) * 2007-12-06 2009-06-11 Metso Fiber Karlstad Ab Système de réception et de transport de boues de chaux depuis un filtre de liqueur blanche
ITRE20090090A1 (it) * 2009-09-18 2011-03-19 Diemme Spa Pressa per la pressatura di prodotti alimentari e relativo metodo
FR2992569A1 (fr) * 2012-06-29 2014-01-03 Peugeot Citroen Automobiles Sa Filtre autonettoyant d'un reservoir de liquide, notamment d'un reservoir de liquide lave-glace de vehicule automobile.
CN105928328A (zh) * 2016-07-11 2016-09-07 济南大学 一种螺旋压榨脱水浒苔的装置
CN106902560A (zh) * 2017-03-24 2017-06-30 合肥慧谷农业科技有限公司 一种猪粪便与尿液的分离装置
CN106995264A (zh) * 2017-06-08 2017-08-01 张花枝 一种化粪池废物治理装置
CN107032577A (zh) * 2017-06-08 2017-08-11 张花枝 一种化粪池治理装置
CN108543634A (zh) * 2018-05-18 2018-09-18 河南联塑实业有限公司 一种喷头防堵装置
CN111606539A (zh) * 2020-06-08 2020-09-01 天津市丽碧朗环保科技有限公司 一种污泥高压脱水方法
CN111606540A (zh) * 2020-06-08 2020-09-01 天津市丽碧朗环保科技有限公司 一种污泥高压脱水处理方法
CN112274994A (zh) * 2020-11-23 2021-01-29 重庆合弘欣环保科技有限公司 一种便于维护的水处理设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107413465B (zh) * 2017-09-05 2023-10-10 池州市琼琚信息技术服务有限公司 一种污泥切碎装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007501A1 (fr) * 1987-03-31 1988-10-06 Optimal Miljøteknik Aps Appareil de drainage de boue
US5979304A (en) * 1994-03-31 1999-11-09 Elf Atochem S.A. Separation of sludge from liquid by piston-aided filtration
US6110388A (en) * 1996-10-25 2000-08-29 Elf Atochem S.A. Sludge filtration device comprising a filter piston, and sludge treatment plant and sludge filtration process thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988007501A1 (fr) * 1987-03-31 1988-10-06 Optimal Miljøteknik Aps Appareil de drainage de boue
US5979304A (en) * 1994-03-31 1999-11-09 Elf Atochem S.A. Separation of sludge from liquid by piston-aided filtration
US6110388A (en) * 1996-10-25 2000-08-29 Elf Atochem S.A. Sludge filtration device comprising a filter piston, and sludge treatment plant and sludge filtration process thereof

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009072980A1 (fr) * 2007-12-06 2009-06-11 Metso Fiber Karlstad Ab Robinet de tuyau d'alimentation en matières finement granulées
WO2009072979A1 (fr) * 2007-12-06 2009-06-11 Metso Fiber Karlstad Ab Procédé de réglage d'un robinet de tuyau
CN101939482B (zh) * 2007-12-06 2012-09-26 美卓造纸机械(瑞典)公司 用于接收并输送来自白液过滤器的石灰泥的系统
RU2465505C2 (ru) * 2007-12-06 2012-10-27 Метсо Пейпер Свиден Актиеболаг Клапан шланга для подачи мелко измельченного материала
WO2009072978A1 (fr) * 2007-12-06 2009-06-11 Metso Fiber Karlstad Ab Système de réception et de transport de boues de chaux depuis un filtre de liqueur blanche
ITRE20090090A1 (it) * 2009-09-18 2011-03-19 Diemme Spa Pressa per la pressatura di prodotti alimentari e relativo metodo
FR2992569A1 (fr) * 2012-06-29 2014-01-03 Peugeot Citroen Automobiles Sa Filtre autonettoyant d'un reservoir de liquide, notamment d'un reservoir de liquide lave-glace de vehicule automobile.
CN105928328B (zh) * 2016-07-11 2018-06-29 济南大学 一种螺旋压榨脱水浒苔的装置
CN105928328A (zh) * 2016-07-11 2016-09-07 济南大学 一种螺旋压榨脱水浒苔的装置
CN106902560A (zh) * 2017-03-24 2017-06-30 合肥慧谷农业科技有限公司 一种猪粪便与尿液的分离装置
CN107032577A (zh) * 2017-06-08 2017-08-11 张花枝 一种化粪池治理装置
CN106995264A (zh) * 2017-06-08 2017-08-01 张花枝 一种化粪池废物治理装置
CN108543634A (zh) * 2018-05-18 2018-09-18 河南联塑实业有限公司 一种喷头防堵装置
CN111606539A (zh) * 2020-06-08 2020-09-01 天津市丽碧朗环保科技有限公司 一种污泥高压脱水方法
CN111606540A (zh) * 2020-06-08 2020-09-01 天津市丽碧朗环保科技有限公司 一种污泥高压脱水处理方法
CN112274994A (zh) * 2020-11-23 2021-01-29 重庆合弘欣环保科技有限公司 一种便于维护的水处理设备

Also Published As

Publication number Publication date
EP1907095A1 (fr) 2008-04-09
NO20076204L (no) 2008-01-31

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