WO2011154760A1 - Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante - Google Patents

Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante Download PDF

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Publication number
WO2011154760A1
WO2011154760A1 PCT/IB2010/001428 IB2010001428W WO2011154760A1 WO 2011154760 A1 WO2011154760 A1 WO 2011154760A1 IB 2010001428 W IB2010001428 W IB 2010001428W WO 2011154760 A1 WO2011154760 A1 WO 2011154760A1
Authority
WO
WIPO (PCT)
Prior art keywords
sludge
annex
dewatering
installation
resulting
Prior art date
Application number
PCT/IB2010/001428
Other languages
English (en)
Original Assignee
Zhu, Qing, Hai
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 Zhu, Qing, Hai filed Critical Zhu, Qing, Hai
Priority to PCT/IB2010/001428 priority Critical patent/WO2011154760A1/fr
Priority to CA2715773A priority patent/CA2715773A1/fr
Publication of WO2011154760A1 publication Critical patent/WO2011154760A1/fr

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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
    • 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
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents

Definitions

  • This invention is a technology in the sludge treatment field specializing in sludge dewatering equipment and installations.
  • Sludge is produced as a waste product during wastewater treatment processes.
  • the resulting sludge is high in organic content, and highly decomposable emitting foul odour.
  • the sludge has low density and high moisture content. It is also a hydrophilic matter with a colloidal structure that poses challenges for dewatering.
  • As sludge contains high nitrogen and phosphorous , if released into water body, it promotes eutrophication, resulting in low dissolved oxygen and deterioration of water quality.
  • Sludge contains pathogen, parasites and other harmful substances which are transferrable to human within the biosphere causing health problems.
  • This new technology provides effective treatment of sludge waste at relatively low energy consumption.
  • Wastewater treatment an important part of environmental protection, produces increasingly large quantity of sludge that is difficult to be dewatered.
  • the traditional centrifugal hydro-extractor, belt filter press, and frame filter press are only able to decrease water content of sludge to 75-85%, and hence are considered ineffective. Heating and drying are employed in most cases to further dewater the sludge, but potential problems of high energy consumption, offensive odour, and air pollution are also created.
  • the invention provides a new means and equipment for dewatering of sludge at ambient temperature, reducing water content of sludge from 95-98% to 20-30% without additional source of heat such as burning of coal, oil, or gas. This is in compliance with the globally promoted concept of energy saving and carbon reduction, offering a solution to the problem of environmental pollution caused by sludge dewatering.
  • the invention provides a means and an equipment for conditioning, dewatering, and drying of sludge at ambient temperature.
  • the conditioning device comprises an additive weighing unit, a feeding unit, a discharging unit, and a stirring unit.
  • the additive weighing unit includes a crew conveyor and a weighing pad.
  • a display unit showing quantity of feed and discharge, a feeding unit, a discharging unit, and a stirring unit are also available in the conditioning device.
  • the dewatering device is a plate press dewatering device.
  • the plates are equipped with certain number of springs and a feeding inlet at the center of each plate .
  • the plates are mobile, and each filtering unit is of a composite structure.
  • Hydraulic unit is integrated with dewatering unit and controlling unit in the hydraulic cylinder.
  • a cooling unit is installed in the cylinder. Cavities are available in the plates with sealing units at the sides of the plates. Water is discharged through an inverted-V-shape water container followed by troughs at two sides of the container. Flipping the water container by 180 degrees transforms it into a holder of filter cake.
  • the drying device is a mixing roller equipped with
  • Each filtering plate of the plate press dewatering device is of a mobile and composite structure, made from
  • Feeding is done at the center [6] of the filtering plates.
  • Cavities [7] with net lining are available at two sides of each of the filtering plates, increasing water output of filter chamber.
  • filtering plates are pushed forward by piston-rods, and volume of the filter chamber is hence reduced. Filter cake is then dewatered under an evenly distributed pressure.
  • a cooling unit [8] in the cylinder ensures undisturbed
  • tilting system transforms it into a holder of filter cake, which transports the cake into a drying unit below when the cake drops.
  • the advantage of the conditioning device is that it works with all kinds of sludge by adding conditioner according to the composition of the sludge, and completely mixing the sludge with the conditioner, creating favorable condition for the subsequent dewatering process.
  • the conditioned sludge is pumped to dewatering device, producing filter cake with low water content, which can be further lowered through cold air stripping.
  • the entire system is a continuous integrated production process. Because the process is completed at ambient temperature, cost is minimized, and the

Abstract

Cette invention est une technique relevant du domaine du traitement des boues dédiée à l'équipement et aux installations de déshydratation des boues. Les boues sont les déchets produits dans les procédés de traitement des eaux usées. Les boues obtenues ont une forte teneur organique d'où émanent des effluves malodorants hautement décomposables. Elles ont une basse densité et une teneur élevée en humidité. Ce sont également des matières hydrophiles ayant une structure colloïdale dont la déshydratation représente de véritables défis. Comme les boues ont des teneurs élevées en azote et phosphore, si elles sont libérées dans un élément aqueux, elles favorisent l'eutrophication, se traduisant par une faible teneur en oxygène dissous et une détérioration de la qualité de l'eau. Les boues contiennent des pathogènes, des parasites et autres substances nocives qui peuvent se transmettre à l'homme au sein de la biosphère, provoquant des problèmes de santé. La nouvelle technique selon l'invention propose un traitement efficace des boues usées à une consommation énergétique relativement basse.
PCT/IB2010/001428 2010-06-11 2010-06-11 Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante WO2011154760A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IB2010/001428 WO2011154760A1 (fr) 2010-06-11 2010-06-11 Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante
CA2715773A CA2715773A1 (fr) 2010-06-11 2010-09-20 Une methode de deshyrogenation et de sechage et installation pour le conditionnement de boues a temperature ambiante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2010/001428 WO2011154760A1 (fr) 2010-06-11 2010-06-11 Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante

Publications (1)

Publication Number Publication Date
WO2011154760A1 true WO2011154760A1 (fr) 2011-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/001428 WO2011154760A1 (fr) 2010-06-11 2010-06-11 Procédé de déshydrogénation et de séchage et installation de conditionnement de boues à température ambiante

Country Status (2)

Country Link
CA (1) CA2715773A1 (fr)
WO (1) WO2011154760A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103288327A (zh) * 2013-06-06 2013-09-11 江苏富大环境科技有限公司 一种污泥处理方法
CN105347651A (zh) * 2015-12-15 2016-02-24 南安市先创环保技术服务有限公司 一种污泥脱水调理设备
CN108147643A (zh) * 2018-01-12 2018-06-12 洛阳浦惠环保科技有限公司 剩余污泥深化处理再生利用装置
CN111892278A (zh) * 2020-08-12 2020-11-06 宁波市路棠电子科技有限公司 一种单次摄入定量淤泥并搅拌的固化处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107892461A (zh) * 2017-11-09 2018-04-10 韩文雅 一种淤泥脱水装置中的切割机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082192A (ja) * 1983-10-13 1985-05-10 Ebara Infilco Co Ltd 有機性汚泥の処理方法
US5227073A (en) * 1990-10-18 1993-07-13 Alb. Klein Gmbh & Co. Kg Method of dewatering suspensions or the like slurry-like mixtures
US5562832A (en) * 1995-01-13 1996-10-08 Beloit Technologies, Inc. Absorptive sludge dewatering process for papermaking waste
US20030196969A1 (en) * 2002-04-17 2003-10-23 Anderson Paul W. Sludge stripping process and system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6082192A (ja) * 1983-10-13 1985-05-10 Ebara Infilco Co Ltd 有機性汚泥の処理方法
US5227073A (en) * 1990-10-18 1993-07-13 Alb. Klein Gmbh & Co. Kg Method of dewatering suspensions or the like slurry-like mixtures
US5562832A (en) * 1995-01-13 1996-10-08 Beloit Technologies, Inc. Absorptive sludge dewatering process for papermaking waste
US20030196969A1 (en) * 2002-04-17 2003-10-23 Anderson Paul W. Sludge stripping process and system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103288327A (zh) * 2013-06-06 2013-09-11 江苏富大环境科技有限公司 一种污泥处理方法
CN105347651A (zh) * 2015-12-15 2016-02-24 南安市先创环保技术服务有限公司 一种污泥脱水调理设备
CN108147643A (zh) * 2018-01-12 2018-06-12 洛阳浦惠环保科技有限公司 剩余污泥深化处理再生利用装置
CN111892278A (zh) * 2020-08-12 2020-11-06 宁波市路棠电子科技有限公司 一种单次摄入定量淤泥并搅拌的固化处理装置

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Publication number Publication date
CA2715773A1 (fr) 2011-12-11

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