WO2014027122A1 - Système et procédé pour le traitement des eaux - Google Patents

Système et procédé pour le traitement des eaux Download PDF

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Publication number
WO2014027122A1
WO2014027122A1 PCT/ES2012/070627 ES2012070627W WO2014027122A1 WO 2014027122 A1 WO2014027122 A1 WO 2014027122A1 ES 2012070627 W ES2012070627 W ES 2012070627W WO 2014027122 A1 WO2014027122 A1 WO 2014027122A1
Authority
WO
WIPO (PCT)
Prior art keywords
filtering
tank
water treatment
effluent
module
Prior art date
Application number
PCT/ES2012/070627
Other languages
English (en)
Spanish (es)
Other versions
WO2014027122A8 (fr
Inventor
Jordi BACARDIT PEÑARROYA
Nuria MARGARIT BEL
Jorge Juan MALFEITO
Alejandro ZARZUELA
Original Assignee
Acciona Agua, S.A.U.
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 Acciona Agua, S.A.U. filed Critical Acciona Agua, S.A.U.
Priority to PCT/ES2012/070627 priority Critical patent/WO2014027122A1/fr
Publication of WO2014027122A1 publication Critical patent/WO2014027122A1/fr
Publication of WO2014027122A8 publication Critical patent/WO2014027122A8/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

Definitions

  • the present invention is framed in the field of water treatments.
  • the object of the invention consists in a method of wastewater treatment based on a low pressure and membrane passage system.
  • a commonly used treatment includes reverse osmosis treatment. Fluid flows resulting from reverse osmosis desalination plants are not usually recovered and are often discarded by taking them to the sewer system.
  • primary dehydration is generally achieved by sedimentation, filtration, flotation, among others, while secondary dehydration is used to further increase the solids content and reduce the water content.
  • the separation techniques have been improved by the use of polymeric materials that facilitate the solids concentration process (coagulation-flocculation).
  • coagulation-flocculation coagulation-flocculation
  • sludge dehydration has become an essential part of sewage treatment and the improvement of sludge dehydration can lead to increased savings, especially with regard to the costs associated with sludge transport of being eliminated.
  • the membrane elements can then be used as bioreactors as described in US201 1 / 0263009A1.
  • a membrane-bioreactor is a modification of the conventional process, where the traditional secondary clarifier is replaced and the activated sludge is concentrated in a bioreactor that is connected to a membrane crossflow ultrafiltration unit for the separation of treated water from the mixed solution (Scholz and Fuchs 2000).
  • the effluent quality depends on the operating condition in the sedimentation tank and the characteristics of sludge sedimentation.
  • the amount of sludge that can be maintained in a conventional treatment plant is limited due to the sedimentation capacity of poor sludge in a high concentration. Therefore, different secondary clarification processes need to be applied in order to achieve improved sludge retention.
  • the combination of conventional biological process with the ultrafiltrate process [UF] has recently been adapted to maximize process efficiency.
  • Ultrafiltration has also been considered as a pre-treatment system to reverse osmosis feeding (Wilf and Schierach 2001). Recently submerged ultrafiltration membranes have been developed in conjunction with chemical precipitation or lime softening that can be used to treat reverse osmosis feeding (Aguinaldo 2009).
  • the object of the invention allows a better use of the water treatment processes since its application allows to obtain water from the fluid flows or fluid / solid mixtures resulting from water treatments.
  • both the system and the method described here cover at least two possible aspects related to the problem described above, on the one hand the use of recycled or reused elements is proposed and on the other hand the optimization of water treatment systems through recovery of clarified water.
  • the person skilled in the art will appreciate that the described method is applied to a system that has been subject to the insertion of the recycled elements mentioned above.
  • the method of the invention is based on the sedimentation of the fluid flows that come from water treatment plants, which becomes a treatment that allows a reconditioning of the condensation of the fluid resulting in a thickening of said flow rates. Said treatment, in turn, achieves the result of obtaining water extracted from the flow from the water treatment plant.
  • Figure 1 Shows a scheme of an application of the method object of the invention where the different elements used and their relationship between them can be seen.
  • the system (1) for water treatment described herein is based on the use of a tank (2) connected to at least one effluent from at least a part of at least one water treatment plant. waters; destined to collect all the effluents that leave each of the parts or plants.
  • said tank (2) there is at least one filter module (3) located in a low pressure vessel comprising at least one filter element, which may be a submerged filter element or a pressurized ultrafiltrate element intended to receive and treat said effluent and concentrate residual sludge.
  • the filtering module (3) is equipped with one or more fluid treatment or filtering elements based on: pretreatment, filtering by osmosis, filtering by reverse osmosis, post treatment, counter current filtering, chemically enhanced counter current filtering, aeration or in-situ cleaning.
  • the system (1) is completed with a solids recovery equipment connected to the filtering module (3) designed to manage solid particles from the filtering module 5 (3).
  • At least one outflow or effluent flow is collected from the tank (2) from either at least a part of a water treatment plant or a water treatment plant. water treatment.
  • the effluent from at least a part of at least one water treatment plant comprises at least one flow from a water treatment selected from the group5 consisting of: sand filtration, osmosis filtration, DAF filtration, filtration by osmosis, filtered by reverse osmosis, filtered by ultrafiltration, filtered by membrane, floated with chemical stage and comprises at least water and other materials, said other materials may be solid or liquid, but are mixed together with the or water in said effluent in such a way that they make up a single flow.
  • a water treatment selected from the group5 consisting of: sand filtration, osmosis filtration, DAF filtration, filtration by osmosis, filtered by reverse osmosis, filtered by ultrafiltration, filtered by membrane, floated with chemical stage and comprises at least water and other materials, said other materials may be solid or liquid, but are mixed together with the or water in said effluent in such a way that they make up a single flow.
  • All said effluent, components and flows are collected in the tank (2) where all the effluents from both the different parts of the water treatment plant, and from the treatment plant 5 itself (this is output) common of said plant through an exit channel) or several water treatment plants. With this it is achieved that in said tank (2) a content corresponding to a mixed solution composed of different fluids comprising waste from water treatments is generated.
  • the content of the tank (2) is treated by at least one filter module (3) to condition it by the filter module (3) which comprises at least one element of filtering which can be submerged filtering or pressurized ultrafiltration.
  • Said content of the tank (2) is treated in the tank itself (2) preferably by means of a filtering module (3) which has an ultrafiltration system using pressurized or submerged modules equipped with filtering equipment that can be chosen from counter-current filtering. , aeration, countercurrent filtering with the intervention of chemical agents or in-situ cleaning.
  • Said treatment is carried out to condition the content by processing it to separate water from waste. Once separated the waste is sent to a waste management module while the filtered water is recirculated and / or made to reach the water treatment plant

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un système et un procédé permettant d'épaissir et de déshydrater des déchets, ledit procédé pouvant être appliqué à n'importe quel type de déchet, de pré-traitement, de post-traitement et d'installations de dessalinisation par osmose, ou à n'importe quels autres effluents qui peuvent être récupérés pendant le processus, par utilisation d'un système de basse pression par membrane qui comprend les unités suivantes: un réservoir tampon dans lequel sont regroupés et mélangés tous les courants, un récipient à basse pression comportant des modules de membranes et des éléments réutilisés/recyclés, une station de récupération de matières solides et les tubes/tuyaux nécessaires pour que l'effluent traité puisse arriver à l'installation.
PCT/ES2012/070627 2012-08-16 2012-08-16 Système et procédé pour le traitement des eaux WO2014027122A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ES2012/070627 WO2014027122A1 (fr) 2012-08-16 2012-08-16 Système et procédé pour le traitement des eaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2012/070627 WO2014027122A1 (fr) 2012-08-16 2012-08-16 Système et procédé pour le traitement des eaux

Publications (2)

Publication Number Publication Date
WO2014027122A1 true WO2014027122A1 (fr) 2014-02-20
WO2014027122A8 WO2014027122A8 (fr) 2014-04-17

Family

ID=47116041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2012/070627 WO2014027122A1 (fr) 2012-08-16 2012-08-16 Système et procédé pour le traitement des eaux

Country Status (1)

Country Link
WO (1) WO2014027122A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082671A (en) 1976-09-30 1978-04-04 Envirotech Corporation Sludge thickening apparatus
US4259185A (en) 1978-07-31 1981-03-31 Mixon James A Sludge thickening apparatus
US4336146A (en) 1980-08-25 1982-06-22 Hercules Incorporated Method of thickening heavy brine solutions
US4404099A (en) 1980-05-09 1983-09-13 Simon-Hartley Limited Sludge thickening
US5720887A (en) 1996-11-21 1998-02-24 Betzdearborn Inc. Methods for sludge dewatering
WO2001068536A1 (fr) * 2000-03-10 2001-09-20 Va Tech Wabag Gmbh Procede et dispositif pour l'epuration d'eaux usees
US6413433B1 (en) 2000-08-31 2002-07-02 Nalco Chemical Company Method for dewatering of sludge
US20060169636A1 (en) * 2005-01-31 2006-08-03 Ashbrook Corporation Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane
US20110131994A1 (en) 2009-12-04 2011-06-09 General Electric Company Economical and Sustainable Disposal of Zero Liquid Discharge Salt Byproduct
US20110180479A1 (en) 2010-01-27 2011-07-28 Milton Roy Company Zero liquid discharge water treatment system and method
US20110263009A1 (en) 2008-10-30 2011-10-27 Paques I.P. B.V. Method for the filtration of a bioreactor liquid from a bioreactor; cross-flow membrane module, and bioreactor membrane system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082671A (en) 1976-09-30 1978-04-04 Envirotech Corporation Sludge thickening apparatus
US4259185A (en) 1978-07-31 1981-03-31 Mixon James A Sludge thickening apparatus
US4404099A (en) 1980-05-09 1983-09-13 Simon-Hartley Limited Sludge thickening
US4336146A (en) 1980-08-25 1982-06-22 Hercules Incorporated Method of thickening heavy brine solutions
US5720887A (en) 1996-11-21 1998-02-24 Betzdearborn Inc. Methods for sludge dewatering
WO2001068536A1 (fr) * 2000-03-10 2001-09-20 Va Tech Wabag Gmbh Procede et dispositif pour l'epuration d'eaux usees
US6413433B1 (en) 2000-08-31 2002-07-02 Nalco Chemical Company Method for dewatering of sludge
US20060169636A1 (en) * 2005-01-31 2006-08-03 Ashbrook Corporation Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane
US20110263009A1 (en) 2008-10-30 2011-10-27 Paques I.P. B.V. Method for the filtration of a bioreactor liquid from a bioreactor; cross-flow membrane module, and bioreactor membrane system
US20110131994A1 (en) 2009-12-04 2011-06-09 General Electric Company Economical and Sustainable Disposal of Zero Liquid Discharge Salt Byproduct
US20110180479A1 (en) 2010-01-27 2011-07-28 Milton Roy Company Zero liquid discharge water treatment system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CICEK N: "A Review of Membrane Bioreactors and Their Potential Application in the Treatment of Agricultural Wastewater", CANADIAN BIOSYSTEMS ENGINEERING, THE SOCIETY = LA SOCIÉTÉ, SASKATOON, CA, vol. 45, no. 6, 1 January 2003 (2003-01-01), pages 37 - 49, XP003018792, ISSN: 1492-9058 *

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