[go: up one dir, main page]

WO2009151347A1 - Photoréacteur, procédé et système pour le traitement des eaux usées sanitaires et domestiques et des eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage - Google Patents

Photoréacteur, procédé et système pour le traitement des eaux usées sanitaires et domestiques et des eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage Download PDF

Info

Publication number
WO2009151347A1
WO2009151347A1 PCT/PL2009/000068 PL2009000068W WO2009151347A1 WO 2009151347 A1 WO2009151347 A1 WO 2009151347A1 PL 2009000068 W PL2009000068 W PL 2009000068W WO 2009151347 A1 WO2009151347 A1 WO 2009151347A1
Authority
WO
WIPO (PCT)
Prior art keywords
sewage
photoreactor
photocatalyst
watercrafts
sanitary
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/PL2009/000068
Other languages
English (en)
Inventor
Jan Hupka
Adriana Zaleska
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.)
Gdansk University of Technology
Original Assignee
Gdansk University of Technology
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 Gdansk University of Technology filed Critical Gdansk University of Technology
Publication of WO2009151347A1 publication Critical patent/WO2009151347A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • 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
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/286—Anaerobic digestion processes including two or more steps
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • 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
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • Photoreactor and method and system for sanitary and domestic sewage and bilge sewage water treatment generated especially on small and medium watercrafts or drilling platforms
  • the subject of the invention is the photoreactor for treatment of sanitary and domestic sewage and bilge sewage water generated on small and medium watercrafts or drilling platforms and method and system for sanitary and domestic sewage treatment and bilge sewage water generated especially on small and medium watercrafts or drilling platforms.
  • sewage treatment based on coagulation, sedimentation and filtration are installed on larger vessels as well and cannot reduce organic carbon from dissolved compounds.
  • Another kind of sewage treatment consisting in degradation of contaminants with presence of semiconductors and UV- Vis radiation, based on reactions with presence of hydroxyl radicals. Hydroxyl radicals are among the strongest nonselective oxidizers which can be implemented in treatment of water and sewage as their redox potential is 2,80V. In this method almost all organic and sewage as their redox potential is 2,80V. In this method almost all organic compounds undergo degradation.
  • the kind and the amount of semiconductor, reaction time and radiation intensity are selected.
  • reaction chamber equipped with reaction chamber covered with UV- Vis light permeable layer and covered with the internal layer of photocatalyst.
  • WO2007079749 is known the method and the system for photocatalytic removal of organic halides from water.
  • Reaction chamber is covered with the layer of photocatalyst and fitted with one or several lamps emitting polychromatic radiation, preferably from UV range and into them may be dosed one or several oxidizing agents.
  • US7108782 is the onboard system for sewage treatment utilizing the membrane bioreactors.
  • the system applies the fact that bacteria naturally present in the stream of raw sewage cause degradation of contaminants existent in the sewage.
  • the membranes placed in the bioreactors compose a barrier stopping the bacteria and contaminants.
  • After leaving bioreactor sewage is subject to disinfection with UV radiation.
  • the sewage after passing through the membrane has the level of purity allowing release into the sea.
  • the onboard sewage treatment system permitting removal of suspended particles and biological treatment is the subject of the invention US6361695.
  • the bioreactivator is fed with gaseous phase containing oxygen.
  • any photocatalytic installations for sewage treatment on watercrafts which apply solar radiation There is not known either any method of sanitary-domestic sewage on small and medium watercrafts, which applies solar radiation for photocatalytic reactions.
  • Photoreactor for sanitary and domestic sewage and bilge sewage water treatment generated especially on small and medium watercrafts or drilling platforms fitted with reaction chamber covered with UV- Vis light permeable layer with photocatalyst located internally is characterized according to the invention with the feature of being supplied, preferably with system for measuring flux of radiant power in the range of UV-Vis, with modified titanium dioxide(IV) as photocatalyst.
  • Dioxide is the product achieved through heating process of titanium hydroxide (IV) blended with non metals, preferably with organic compounds containing carbon and/or nitrogen and/or sulfur and/or boron and/or nanoparticles of precious metals preferably silver and/or platinum in the quantities from 0,001 to 10% of weight.
  • Photocatalyst has the form of layer in the quantity from 0,05 to 5g/m 2 or in the form of suspension in the quantity from 0,01 to 5g/dm 3 or photocatalyst is seated on the support in the quantity from 0,01 to 5g/m 2 .
  • the method of sanitary and domestic sewage and bilge sewage water treatment generated especially on small and medium watercrafts or drilling platforms based on separation from the sewage floating and sedimenting substances, determining pH of sewage solution at the level of 6-8 and next making the obtained solution the subject to the physicochemical processing in the closed cycle is characterized according to the invention by making the sewage solution the subject to photocatalytic process in the photoreactor.
  • the sewage solution undergoes light flux treatment at the power of 10-12.000 W/m 2 , preferably 300-4.000 W/m 2 , preferably to decrease COD to the value of 125 mg O 2 /dm 3 for the period of minimum 30 minutes, preferably 8 hours at the average linear velocity of values preferably from 0,2 to 2,0m/s.
  • hydrogen peroxide is added, in the quantity from 20:1 to 1:1 in relation to COD, until the level of COD remains at 60 mg O 2 /dm 3 at the most.
  • the system for sanitary and domestic sewage and bilge sewage water treatment generated especially on small and medium watercrafts or drilling platforms equipped with slop tanks, floating substance separator, sedimenting by the fact that it consists of at least two slope tanks connected in parallel which are connected by means of a pump and an aeration device with the photoreactor.
  • Photocatalyst in the photoreactor is modified titanium dioxide(IV) containing carbon and/or nitrogen and/or sulfur and/or boron in the quantities from 0,001 to 10% of weight.
  • a dosing mechanism preferably dosing pump for hydrogen peroxide.
  • floating substance separator and sedimenting substances separator are connected with methane fermentation chamber.
  • floating substance separator and sedimenting substances separator are connected with the aerobic sludge digestion.
  • floating substance separator and sedimenting substances separator are connected with an incinerator.
  • the invention it is possible to mount the sewage treatment installation on small and medium watercrafts or on drilling platforms with respect to environment protection.
  • the advantage of the system according to the invention is the application of renewable solar energy and protection of biosphere against pollution.
  • the system according to the invention may be a leakproof system, eliminating unpleasant smells with automated maintenance.
  • the system may be main or ancillary installation for biological sewage treatment plants that large watercrafts are equipped with.
  • fig.1 presents the layout of the sewage treatment device in the variant with methane fermentation chamber
  • fig.2 presents the layout of the sewage treatment device in the variant with the aerobic sludge digestion
  • flg.3 presents the layout of the sewage treatment device in the variant with the incinerator.
  • the sewage from sanitary facilities 7 with the COD value 1600 mg O 2 /dm 3 is directed to one of the storage reservoirs 3a, 3b.
  • the sewage fat from caboose 8 is removed in the fat separator 9 and directed to the incinerator 10.
  • the suspended matter of the value > 25 ⁇ m is removed in the sedimentation process and directed to the methane fermentation chamber 11.
  • the photoreactor 1 is fitted with the sensor measuring solar radiation flux in the UV- Vis scope and the reaction chamber 2, covered internally with photocatalyst which is a modified titanium dioxide (IV), achieved through heating titanium hydroxide (IV) blended with organic compounds containing carbon with quantity 0.05% of weight and platinum in the quantity 0.1% of weight.
  • the system is fitted with ports for sample extraction allowing evaluation of the sewage purification level and with the aeration device 5 and a dosing mechanism for hydrogen peroxide solution 6.
  • carbon peroxide is added to the sewage solution. Hydrogen peroxide/COD ratio in the sewage equals 20:1 to 1:1.
  • Procedure as in the example I The suspended matter of the value > 25 ⁇ m are removed in the sedimentation process and directed to the aerobic sludge digestion chamber 12, which takes place with the presence of microorganisms and oxygen. Further procedure is as in the example I but with modified titanium dioxide(IV) as the photocatalyst achieved through heating titanium hydroxide(IV) blended with organic compounds containing nitrogen in the quantity 0.2% of weight.
  • Procedure as in the example I The suspended matter of the value > 25 ⁇ m are removed in the sedimentation process and directed to the incinerator. Further procedure is as in the example I but with modified titanium dioxide(IV) as the photocatalyst achieved through heating titanium hydroxide(IV) blended with blended with organic compounds containing sulfur in the quantity 0.1% of weight.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • 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)
  • Catalysts (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

Cette invention concerne un photoréacteur destiné à traiter les eaux usées sanitaires et domestiques et les eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage. Le photoréacteur selon l'invention est équipé d'une chambre de réaction revêtue d'une couche perméable aux UV et à la lumière visible. Il utilise un photocatalyseur interne et est caractérisé selon l'invention en ce que le photocatalyseur est un dioxyde de titane (IV) modifié, ledit dioxyde étant le produit obtenu par chauffage d'un hydroxyde de titane (IV) mélangé à des non-métaux et/ou à des nanoparticules de métaux précieux. Le procédé est caractérisé selon l'invention par soumission de la solution d'eaux usées au procédé photocatalytique dans le photoréacteur, un dioxyde de titane (IV) modifié étant utilisé à titre de photocatalyseur. Le système selon l'invention est caractérisé en ce qu'il comprend au moins deux citernes à résidus (3a, 3b), reliées en parallèle au moyen d'une pompe (4) et d'un dispositif d'aération (5) au photoréacteur (1). Le photocatalyseur dans le photoréacteur est un dioxyde de titane (IV) modifié.
PCT/PL2009/000068 2008-06-13 2009-06-15 Photoréacteur, procédé et système pour le traitement des eaux usées sanitaires et domestiques et des eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage Ceased WO2009151347A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL385431A PL219139B1 (pl) 2008-06-13 2008-06-13 Układ do oczyszczania ścieków sanitarno-bytowych generowanych na małych i średnich jednostkach pływających
PLP-385431 2008-06-13

Publications (1)

Publication Number Publication Date
WO2009151347A1 true WO2009151347A1 (fr) 2009-12-17

Family

ID=41036766

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2009/000068 Ceased WO2009151347A1 (fr) 2008-06-13 2009-06-15 Photoréacteur, procédé et système pour le traitement des eaux usées sanitaires et domestiques et des eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage

Country Status (2)

Country Link
PL (1) PL219139B1 (fr)
WO (1) WO2009151347A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107486203A (zh) * 2017-09-11 2017-12-19 浙江工商大学 一种可回收漂浮型复合光催化球及其制备方法和应用
CN109293140A (zh) * 2018-10-13 2019-02-01 湖北安达泰建设工程有限公司 一种市政道路污水处理方法及其处理系统
CN109336331A (zh) * 2018-11-13 2019-02-15 四川锐源能环科技有限公司 一种实现卫生间废物资源循环利用的卫生设施及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000001416A (ko) * 1998-06-11 2000-01-15 김형벽 자외선 조사 및 용존산소량 제어를 이용한 매립지 침출수처리방법 및 장치
EP1041042A1 (fr) * 1999-04-02 2000-10-04 Hitachi, Ltd. Procédé et dispositif de purification de l'eau
KR20010008265A (ko) * 2000-11-20 2001-02-05 김현용 태양광/자외선/광촉매를 이용한 에너지절약형 광촉매 반응수처리시스템
US6221259B1 (en) * 1999-03-08 2001-04-24 Kse Inc. Process and catalyst for photocatalytic conversion of contaminants
WO2001070396A2 (fr) * 2000-03-22 2001-09-27 Speer Samuel E Dispositif permettant d'ameliorer les reactions photocatalytiques et photolytiques
US20040009119A1 (en) * 2000-03-28 2004-01-15 Degussa Ag Doped titanium oxides
US7108782B1 (en) * 2003-06-27 2006-09-19 The United States Of America As Represented By The Secretary Of The Navy Marine vessel onboard wastewater treatment system
US20080190826A1 (en) * 2007-02-09 2008-08-14 Miner Jeffery G Ballast water treatment system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000001416A (ko) * 1998-06-11 2000-01-15 김형벽 자외선 조사 및 용존산소량 제어를 이용한 매립지 침출수처리방법 및 장치
US6221259B1 (en) * 1999-03-08 2001-04-24 Kse Inc. Process and catalyst for photocatalytic conversion of contaminants
EP1041042A1 (fr) * 1999-04-02 2000-10-04 Hitachi, Ltd. Procédé et dispositif de purification de l'eau
WO2001070396A2 (fr) * 2000-03-22 2001-09-27 Speer Samuel E Dispositif permettant d'ameliorer les reactions photocatalytiques et photolytiques
US20040009119A1 (en) * 2000-03-28 2004-01-15 Degussa Ag Doped titanium oxides
KR20010008265A (ko) * 2000-11-20 2001-02-05 김현용 태양광/자외선/광촉매를 이용한 에너지절약형 광촉매 반응수처리시스템
US7108782B1 (en) * 2003-06-27 2006-09-19 The United States Of America As Represented By The Secretary Of The Navy Marine vessel onboard wastewater treatment system
US20080190826A1 (en) * 2007-02-09 2008-08-14 Miner Jeffery G Ballast water treatment system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107486203A (zh) * 2017-09-11 2017-12-19 浙江工商大学 一种可回收漂浮型复合光催化球及其制备方法和应用
CN107486203B (zh) * 2017-09-11 2019-12-24 浙江工商大学 一种可回收漂浮型复合光催化球及其制备方法和应用
CN109293140A (zh) * 2018-10-13 2019-02-01 湖北安达泰建设工程有限公司 一种市政道路污水处理方法及其处理系统
CN109336331A (zh) * 2018-11-13 2019-02-15 四川锐源能环科技有限公司 一种实现卫生间废物资源循环利用的卫生设施及方法

Also Published As

Publication number Publication date
PL219139B1 (pl) 2015-03-31
PL385431A1 (pl) 2008-12-08

Similar Documents

Publication Publication Date Title
Changotra et al. Treatment of real pharmaceutical wastewater using combined approach of Fenton applications and aerobic biological treatment
Lefebvre Beyond NEWater: an insight into Singapore's water reuse prospects
Gao et al. The present status of landfill leachate treatment and its development trend from a technological point of view
Ding et al. Effects of GAC layer on the performance of gravity-driven membrane filtration (GDM) system for rainwater recycling
CN102781846B (zh) 电化学处理废水的设备和方法
Atasoy et al. Membrane bioreactor (MBR) treatment of segregated household wastewater for reuse
Ranjit et al. Conventional wastewater treatment processes
Valderrama et al. Winery wastewater treatment for water reuse purpose: Conventional activated sludge versus membrane bioreactor (MBR): A comparative case study
US7534357B2 (en) Dual-train wastewater reclamation and treatment system
Farsani et al. Effective leachate treatment by a pilot-scale submerged electro-membrane bioreactor
US20140054206A1 (en) Systems, methods and components for water treatment and remediation
Gai et al. The role of powdered activated carbon in enhancing the performance of membrane systems for water treatment
Li et al. Resources and nutrients oriented greywater treatment for non-potable reuses
Huang et al. Operational conditions of a membrane filtration reactor coupled with photocatalytic oxidation
KR101210536B1 (ko) 선박용 오수처리장치
Ongena et al. Comparison of MBR and MBBR followed by UV or electrochemical disinfection for decentralized greywater treatment
Ravindran et al. Hybrid membrane bioreactor technology for small water treatment utilities: Process evaluation and primordial considerations
Ibrahim et al. Comparative study of suspended and attached growth in membrane bioreactors for wastewater treatment
CA3133969A1 (fr) Procede de traitement des eaux usees
WO2009151347A1 (fr) Photoréacteur, procédé et système pour le traitement des eaux usées sanitaires et domestiques et des eaux usées de cale générées, en particulier, sur des bateaux et navires de petites et moyennes tailles ou sur des plateformes de forage
Tian et al. Hybrid process of BAC and sMBR for treating polluted raw water
JP2005169304A (ja) 高濃度着色有機排水の処理方法
CN102329040A (zh) 丁位内酯合成香料生产废水的处理方法
Kalash et al. Performance of Thermophilic Aerobic Membrane Reactor (TAMR) for Carpet Cleaning Wastewater
Nagda et al. Current treatment technologies available for different types of wastewater

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09762728

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09762728

Country of ref document: EP

Kind code of ref document: A1