+

WO2007009749A1 - Reacteur permettant de produire du phosphate ammoniaco-magnesien et procede de production de phosphate ammoniaco-magnesien a partir de lisier ou de gaz d'echappement contenant de l'ammonium - Google Patents

Reacteur permettant de produire du phosphate ammoniaco-magnesien et procede de production de phosphate ammoniaco-magnesien a partir de lisier ou de gaz d'echappement contenant de l'ammonium Download PDF

Info

Publication number
WO2007009749A1
WO2007009749A1 PCT/EP2006/007057 EP2006007057W WO2007009749A1 WO 2007009749 A1 WO2007009749 A1 WO 2007009749A1 EP 2006007057 W EP2006007057 W EP 2006007057W WO 2007009749 A1 WO2007009749 A1 WO 2007009749A1
Authority
WO
WIPO (PCT)
Prior art keywords
reactor
ammonium phosphate
magnesium
magnesium ammonium
manure
Prior art date
Application number
PCT/EP2006/007057
Other languages
German (de)
English (en)
Inventor
Siegfried Egner
Dieter Brynioc
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. filed Critical Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
Publication of WO2007009749A1 publication Critical patent/WO2007009749A1/fr

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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • 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
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • 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
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • 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
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4616—Power supply
    • C02F2201/4617—DC only

Definitions

  • Magnesium ammonium phosphate is a high quality and valuable fertilizer for which there is a high demand.
  • waste materials such as manure or exhaust air streams containing relevant concentrations of ammonium in the dissolved state.
  • ammonium can be removed by stripping from ammonium-containing water or precipitated in the form of ammonium sulfate or magnesium ammonium phosphate and recovered as valuable material.
  • Magnesium ammonium phosphate - hereinafter abbreviated to MAP - is carried out according to the prior art by first measuring the ammonium concentration in the water containing ammonium. In a second step, phosphoric acid is added to the ammonium-containing water in a ratio of 1: 1 and then magnesium salts or magnesium oxide are added. If phosphate is already present in the water, this must be taken into account when dosing the phosphoric acid.
  • magnesium chloride which is cheaper than magnesium oxide, leads to salification of the water, so that the water can not be recycled.
  • the invention has for its object to provide a reactor and a process for obtaining magnesium ammonium phosphate, which overcome the above-mentioned disadvantages of the prior art. Furthermore, the object of the invention is to provide methods for obtaining MAP, with the aid of which manure, industrial wastewater and / or ammonia-containing waste gases can be treated and fed to a further use.
  • a reactor with a housing, with two groups of electrodes, wherein one group of electrodes are operated as cathodes and the other group of electrodes are operated as anodes or as sacrificial electrodes, and wherein the sacrificial electrodes made of magnesium or from a consist of magnesium-containing material.
  • ammonia is in the form of ammonium hydroxide:
  • magnesium is provided to the victim elec trode:
  • the total balance is as follows:
  • An advantage of the reactions taking place in the reactor according to the invention is that the water does not salt up, so that it can be circulated. In addition, only small amounts of phosphoric acid are necessary as a chemical. In addition, the yield in the use of the reactor according to the invention is higher because the amount of required process water is not increased. Furthermore, the shorter and more controllable process times and a better controllable process management should be mentioned as advantages.
  • the sacrificial electrodes consist essentially of magnesium.
  • electrode materials covered by the scope consist of a magnesium alloy or magnesium with minor additions of other ingredients.
  • the reactor has an inlet and a drain.
  • the housing of the reactor can be closed or open.
  • the object mentioned at the outset is also achieved by a process for obtaining magnesium ammonium phosphate from a liquid, in particular an aqueous liquid and / or a suspension, by means of a reactor equipped with two groups of electrodes of different polarity, the sacrificial electrodes being made of a magnesium-containing Material in which a DC electrical voltage is applied to the electrodes and the reactor is filled with an ammonium-containing liquid, so that magnesium ammonium phosphate forms and precipitates.
  • the process control can be further improved if the reactor is continuously flowed through by the arrunonium-containing liquid. As a result, continuous process management is possible, which brings with it the well-known advantages in terms of efficiency and throughput rate.
  • the magnesium ammonium phosphate obtained in the process according to the invention can subsequently be separated from the liquid by filtration, in particular by means of a filter press and / or a cyclone separator.
  • the liquid can then be recycled, which has a positive effect on the economy of the method according to the invention.
  • Magnesium ammonium phosphate from manure in particular from the manure of chickens, can be used by diluting the manure with water until a predetermined pH and / or until reaching a predetermined water content, the solid components are separated from the liquid and the formation of magnesium ammonium phosphate is carried out according to one of the previously described methods.
  • magnesium phosphate from the liquid manure, in particular the manure of chickens, by diluting the manure with water until a predetermined pH and / or until a predetermined water content is reached, the diluted manure Bioreactor is supplied for the production of biogas, the process water filtered in the bioreactor and Magnesium ammonium phosphate is formed from the process water according to one of the previously described methods.
  • Magnesium ammonium phosphate and biogas is decomposed. Both the magnesium ammonium phosphate and the biogas have a significant market value, so that the implementation of the method according to the invention is not only cost-covering, but even allows operating profits.
  • the remaining solids in the bioreactor are chemically inert and hygienically safe by the filtration, and can therefore be used without difficulty as natural fertilizer or disposed of in a landfill.
  • the process according to the invention can also be used to purify ammonium-containing waste gases and at the same time to obtain magnesium ammonium phosphate.
  • the exhaust gases are washed in a preferably acidic gas scrubber with phosphoric acid and the magnesium ammonium phosphate is recovered from the process water of the gas scrubber according to one of the methods described above in the reactor according to the invention.
  • FIG. 1 shows a schematic representation of a reactor according to the invention
  • Figure 2 is a flow chart of a first invention
  • FIG. 3 shows a flow chart of a second method according to the invention for obtaining MAP from chicken manure
  • FIG. 4 shows a flow diagram of a method according to the invention for obtaining MAP from ammonium-containing exhaust gases.
  • FIG. 1 shows a schematic representation of a reactor according to the invention.
  • the reactor 1 has a housing 3 on.
  • the housing 3 serves to receive an ammonium-containing aqueous liquid 5.
  • an ammonium-containing aqueous liquid 5 dip two electrodes 7 and 9, which are electrically connected to a DC power source 11.
  • the electrode 7 is a so-called sacrificial anode, which is connected to the positive pole of the DC power source 11, while the electrode 9 is a cathode which is connected to the negative pole of the DC power source 11.
  • the sacrificial electrode 7 is made of a magnesium-containing material, so that magnesium ions get into the liquid 5 as soon as an electrical voltage is applied to the electrodes 7 and 9.
  • the equations of the reactions taking place in the reactor 1 are shown in FIG. 1 and, moreover, are explained in more detail in the introduction to the description.
  • a ⁇ unoniumhydroxid and phosphoric acid are fed and obtained MAP.
  • the MAP settles to the bottom of the reactor 1 and can be separated from the liquid 5 by filtration, for example.
  • FIG. 2 schematically illustrates an application of the reactor according to the invention in the production of MAP from chicken manure.
  • a chicken coop 13 chicken manure falls, which is diluted in a first step 15 with water, in particular rainwater or accumulating process water until a predetermined pH is reached and / or the water content of the manure has reached a predetermined value.
  • a filtration 17 is carried out, in which the solid components with a low ammonium content and a high proportion of organic carbon compound are separated from a liquid 18 having a high ammonium content.
  • the high-concentration ammonium liquid 18 is supplied to a reactor 1 of the present invention. At the same time the reactor 1 is still supplied phosphoric acid.
  • magnesium ions enter the liquid, so that MAP is formed and at the same time low-process water 19 is formed.
  • the process water 19 can be fed to a bioreactor 21 as well as the organic solids obtained in the filtration 17.
  • a bioreactor is known, for example, from EP 019 151 72 and converts the organic carbon compounds contained in the solids into biogas and mineralized residues. This produces process water 23, which is partially recycled and used for dilution of the manure.
  • the process water 23 is filtered in a filter 27 and the solids retained in the filter 27 are supplied to the bioreactor 21.
  • An advantage of the method according to the invention is its high rate of application, its ease of implementation and its positive energy balance.
  • an advantage of the method according to the invention is its high rate of application, its ease of implementation and its positive energy balance.
  • only valuable products that cause the inventive method is also very advantageous from an economic point of view, arise.
  • FIG. 2 An alternative method for obtaining MAP from chicken manure is shown in FIG. The same material flows are provided with the same reference numerals and the same applies with regard to FIG. 2.
  • the liquid manure diluted with water is fed directly to the bioreactor 21 after process step 15, where biogas is produced there.
  • Process water 23 deducted and removed in a decanter 25 the resulting mineralized residues.
  • the partial stream 23a of the recycled process water 23 through the decanter 25 is now used again for dilution 15 of the chicken manure.
  • Another substream 23b of the process water 23 is filtered in the filter 27 and the filtered solid constituents 28 are fed directly to the bioreactor 21.
  • the ammonium-containing process water 23b obtained in the filter 27 is now fed to the reactor 1 according to the invention, wherein at the same time phosphoric acid is also supplied.
  • MAP is obtained in the manner described above and simultaneously provided ammonium-free process water 19. This process water 19 is also used for diluting and / or slurrying 15 of the manure.
  • FIG. 4 shows a further application of the reactor 1 according to the invention in the production of MAP from ammonia-containing exhaust gases.
  • the ammonia-containing exhaust gases 29 are fed to an acid gas scrubber 31.
  • the acid gas scrubber 31 the ammonium contained in the exhaust gas is removed from the exhaust gases 29 and absorbed by a process water 33.
  • the process water 33 is in addition to the ammonium still phosphoric acid. This process water 33 is now fed to the reactor 1 according to the invention.
  • reactor 1 according to the invention and the processes according to the invention for recovering magnesium ammonium phosphate are not restricted to the examples of use explained with reference to FIGS. 2-4, but can in principle be used there in a variety of ways where aqueous solutions of ammonium hydroxide or ammonium-containing Exhaust gases are present.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Removal Of Specific Substances (AREA)
  • Fertilizers (AREA)
  • Treating Waste Gases (AREA)

Abstract

L'invention concerne un réacteur et un procédé permettant de produire du phosphate ammoniaco-magnésien, lequel réacteur comporte deux groupes d'électrodes. Une électrode est constituée d'un matériau contenant du magnésium. Ledit procédé permet de produire du phosphate de magnésium à partir de lisier.
PCT/EP2006/007057 2005-07-19 2006-07-18 Reacteur permettant de produire du phosphate ammoniaco-magnesien et procede de production de phosphate ammoniaco-magnesien a partir de lisier ou de gaz d'echappement contenant de l'ammonium WO2007009749A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005034138.1 2005-07-19
DE102005034138A DE102005034138A1 (de) 2005-07-19 2005-07-19 Reaktor zur Gewinnung von Magnesiumammoniumphosphat und Verfahren zur Gewinnung von Magnesiumammoniumphosphat aus Gülle oder ammoniumhaltigen Abgasen

Publications (1)

Publication Number Publication Date
WO2007009749A1 true WO2007009749A1 (fr) 2007-01-25

Family

ID=37215991

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/007057 WO2007009749A1 (fr) 2005-07-19 2006-07-18 Reacteur permettant de produire du phosphate ammoniaco-magnesien et procede de production de phosphate ammoniaco-magnesien a partir de lisier ou de gaz d'echappement contenant de l'ammonium

Country Status (2)

Country Link
DE (1) DE102005034138A1 (fr)
WO (1) WO2007009749A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059465A1 (fr) 2010-11-06 2012-05-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Réacteur pour récupérer des sels de phosphates contenus dans un liquide
WO2012059464A1 (fr) 2010-11-06 2012-05-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de récupération des sels de phosphates contenus dans un liquide
US9194049B2 (en) 2012-07-23 2015-11-24 E2Metrix Inc. Method for simultaneous elimination of orthophosphate and ammonium using electrolytic process
WO2017190240A1 (fr) 2016-05-04 2017-11-09 E2Metrix, Inc. Alliage à base de magnésium et son utilisation dans la fabrication d'électrodes et la synthèse electrochimique de la struvite
WO2018037008A1 (fr) * 2016-08-22 2018-03-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Système de récupération de sels de phosphate et procédé pour faire fonctionner ce système
CN109609970A (zh) * 2018-12-21 2019-04-12 北京林业大学 一种镁阳极电腐蚀促进尿液废水中钾回收的系统及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1396006B1 (it) * 2009-06-30 2012-11-09 Sereco Biotest Snc Studi E Ricerche Ambientali Procedimento ed impianto per l'abbattimento dell'ammoniaca/ammonio presenti in acque reflue mediante precipitazione di map
DE102016109822A1 (de) * 2016-05-27 2017-11-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Elektrolytischer Reaktor
US10837116B2 (en) 2017-11-27 2020-11-17 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Electrolytic reactor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030941A1 (fr) * 1996-02-22 1997-08-28 Enpar Technologies Inc. Traitement electrochimique d'eau contaminee par des composes azotes
EP0968964A1 (fr) * 1998-07-03 2000-01-05 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Procédé de valorisation de lisier
EP1084993A1 (fr) * 1999-09-14 2001-03-21 Eco Flanders S.A. Dispositif et procédé de traitement de lisier
WO2001056937A1 (fr) * 2000-01-31 2001-08-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Installation de traitement des eaux

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648668A (en) * 1970-07-08 1972-03-14 Ebert Michael Gas-operated internal combustion engine
DE3732896A1 (de) * 1986-11-07 1988-08-25 Schulze Rettmer Rainer Verfahren zur eliminierung von ammonium und phosphat aus abwasser und prozesswasser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997030941A1 (fr) * 1996-02-22 1997-08-28 Enpar Technologies Inc. Traitement electrochimique d'eau contaminee par des composes azotes
EP0968964A1 (fr) * 1998-07-03 2000-01-05 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Procédé de valorisation de lisier
EP1084993A1 (fr) * 1999-09-14 2001-03-21 Eco Flanders S.A. Dispositif et procédé de traitement de lisier
WO2001056937A1 (fr) * 2000-01-31 2001-08-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Installation de traitement des eaux

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012059465A1 (fr) 2010-11-06 2012-05-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Réacteur pour récupérer des sels de phosphates contenus dans un liquide
WO2012059464A1 (fr) 2010-11-06 2012-05-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Procédé de récupération des sels de phosphates contenus dans un liquide
US9194049B2 (en) 2012-07-23 2015-11-24 E2Metrix Inc. Method for simultaneous elimination of orthophosphate and ammonium using electrolytic process
WO2017190240A1 (fr) 2016-05-04 2017-11-09 E2Metrix, Inc. Alliage à base de magnésium et son utilisation dans la fabrication d'électrodes et la synthèse electrochimique de la struvite
WO2018037008A1 (fr) * 2016-08-22 2018-03-01 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Système de récupération de sels de phosphate et procédé pour faire fonctionner ce système
CN109609970A (zh) * 2018-12-21 2019-04-12 北京林业大学 一种镁阳极电腐蚀促进尿液废水中钾回收的系统及方法

Also Published As

Publication number Publication date
DE102005034138A1 (de) 2007-01-25

Similar Documents

Publication Publication Date Title
DE102010050691B3 (de) Verfahren Rückgewinnung von Phospatsalzen aus einer Flüssigkeit
WO2007009749A1 (fr) Reacteur permettant de produire du phosphate ammoniaco-magnesien et procede de production de phosphate ammoniaco-magnesien a partir de lisier ou de gaz d'echappement contenant de l'ammonium
DE102010050692B3 (de) Reaktor zur Rückgewinnung von Phosphatsalzen aus einer Flüssigkeit
DE2158847A1 (de) Verfahren und Vorrichtung zur Entfernung und zum Abbau von Verunreinigungen aus bzw. in Abwässern
EP2401229A2 (fr) Procédé d'épuration d'eaux usées contenant du lithium lors de la production continue de phosphates de métaux de transition de lithium
DE19856840A1 (de) Verfahren zur Abwasser-Behandlung und Behandlungsvorrichtung hierfür
WO2019015919A1 (fr) Co2-électrolyseur
WO2018037008A1 (fr) Système de récupération de sels de phosphate et procédé pour faire fonctionner ce système
DE2528889B2 (de) Verfahren zum Entfernen von Schwefelwasserstoff aus einem Gas
DE2523117A1 (de) Verfahren und vorrichtung zur regeneration einer dekapierloesung
DE60308949T2 (de) Verfahren zum Abbau organischer Verbindungen in zu behandelnder Flüssigkeit
EP0633227B1 (fr) Procédé pour le traitement d'eaux résiduaires provenant de la fabrication d'accumulateurs au plomb
DE2908592B2 (de) Verfahren zur Abtrennung und Gewinnung eines chalcophilen Elements aus einer wäßrigen Lösung
DE3047988A1 (de) Verfahren zur verringerung des saeuregehaltes einer salpetersauren loesung unter verwendung eines elektrolysestromes und vorrichtung zur durchfuehrung des verfahrens
DE60111558T2 (de) Verfahren und vorrichtung zur abtrennung und zerstörung von gelöstem nitrat
WO2013068253A1 (fr) Procédé de neutralisation de substances nocives chargées négativement dans des fluides aqueux
DE19815669C2 (de) Verfahren zur reduktiven elektrochemisch katalytischen Eliminierung von Nitrat aus konzentrierten Lösungen
DE19926887A1 (de) Elektrolyseverfahren
DE19506242C2 (de) Verfahren zur direkten elektrochemischen Oxidation von sulfithaltigen Lösungen, insbesondere Abwässern aus Gasreinigungsanlagen
DE2219095A1 (de) Verfahren zur Reinigung von Abwässern
EP3114087B1 (fr) Verfahren und vorrichtung zur herstellung wässriger chlordioxidlösungen
EP0951448A1 (fr) Procede et dispositif de traitement electrophysique de l'eau
DE69512356T2 (de) Elektrolytische behandlung eines materials
DE3330838C2 (fr)
DE2617991C3 (de) Verfahren und Vorrichtung zur Behandlung von Abwassern

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06776285

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载