WO2014166631A1 - Procédé permettant une meilleure épuration des eaux usées d'une installation de fours à coke - Google Patents

Procédé permettant une meilleure épuration des eaux usées d'une installation de fours à coke Download PDF

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Publication number
WO2014166631A1
WO2014166631A1 PCT/EP2014/000952 EP2014000952W WO2014166631A1 WO 2014166631 A1 WO2014166631 A1 WO 2014166631A1 EP 2014000952 W EP2014000952 W EP 2014000952W WO 2014166631 A1 WO2014166631 A1 WO 2014166631A1
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WO
WIPO (PCT)
Prior art keywords
wastewater
desorption column
desorption
waste water
steam
Prior art date
Application number
PCT/EP2014/000952
Other languages
German (de)
English (en)
Inventor
Holger Thielert
Original Assignee
Thyssenkrupp Industrial Solutions Ag
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 Thyssenkrupp Industrial Solutions Ag filed Critical Thyssenkrupp Industrial Solutions Ag
Publication of WO2014166631A1 publication Critical patent/WO2014166631A1/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
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
    • 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
    • C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • 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
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • 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
    • 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

Definitions

  • the invention relates to a method and a system for improved purification of wastewater from a coke oven plant.
  • the invention also relates to a process for the improved purification of effluents from a coke oven plant, which purifies the effluents by a biological detoxification stage, and the effluent obtained, which contains substantially only ammonia and carbon dioxide as the main decomposition product (s), without a subsequent Nitrification and denitrification in a second desorption column (intermediate column) passes, from where the desorbed ammonia is fed into a first desorption column, which serves to degas the waste water before biological purification, so that disposal of the ammonia from the biological detoxification stage is possible, and
  • the gas which serves for desorption of the ammonia in the second desorption column (intermediate column) can also be used for degassing the wastewater in the first desorption column.
  • the gas for desorption of the ammonia is steam.
  • CONFIRMATION COPY In order to remove these pollutants before the discharge of the wastewater into the environment, or to convert it into a safe form, the wastewater in the prior art are transferred to a wastewater treatment. Since recovery of these pollutants is generally not economical, the state-of-the-art wastewater is purified from said pollutants by first outgassing them by desorption process and converting the remaining pollutants or foreign substances into a harmless form. The desorption process takes place in a desorption column, into which the unpurified effluents are first added, and in which, as far as possible, all gaseous or gaseous form convertible pollutants or foreign substances are expelled by application of a spewing gas.
  • Such flue gas is in most cases hot steam. This is usually present in large quantities in a coking plant and is an effective flue gas for many compounds. This is also able to thermally split thermally labile pollutants or foreign substances, and then expel the resulting gases.
  • the collected vapor already contains a large part of the pollutants and can be condensed out for the separation of pollutants or be given for disposal, for example in a Claus reactor.
  • the Austriebsvorgang to expel the gaseous substances from the wastewater takes place in a desorption, which is often called Kokereikolonne or stripping column.
  • the expulsion of gases from a liquid is often referred to as Engases of liquids or stripping.
  • US4311597A describes a process for removing ammonia from a waste water containing free and bound ammonia, the process comprising the steps of distilling the waste water to remove the free ammonia, treating the distilled waste water with soda ash to release the bound ammonia, and distilling the treated wastewater to remove the liberated ammonia.
  • low pressure steam is passed through the column to assist in the expulsion of both the free ammonia and the liberated ammonia. In this way, the ammonia can be recovered as valuable material.
  • the effluent obtained after desorption by a gas still contains the non-expansible substances, so that this wastewater can not be readily discharged into the environment.
  • metabolites are, for example, ammonium compounds and carbon dioxide, and sulfates at low sulfur concentration by sulfation.
  • ammonium compounds can not readily be discharged into the environment, they can be converted to nitrogen by the prior art biological processes with the subsequent steps of nitrification and denitrification. In nitrification, the ammonium compounds are converted into nitrates, and in the subsequent denitrification, the nitrates are converted into nitrogen. This is then released into the atmosphere.
  • DE 40 18 309 A1 discloses a process for the treatment of waste water from gasification plants operated under elevated pressure. From DE 1 168 398 a process for the purification of liquids containing ammonia and acidic components is known.
  • DE 1 767 108 describes a process for destroying the ammonia from the water produced in the coking plant and DE 41 35 763 discloses a process for joint workup of NH 3 and / or H 2 S-containing process wastewaters and sodium sulfide-containing sodium hydroxide solution.
  • a first aspect of the invention relates to a process for the treatment of waste water from a coking plant comprising the steps
  • the steps (a) - (e) of the method according to the invention are preferably carried out in alphabetical order, it being possible for individual steps to take place completely or partially simultaneously.
  • the present invention solves this problem in particular by a method which carries out the purification of the wastewater from a coking plant, in which this first in a first desorption column with a (flash gas) desorption gas from the entrained foreign gases is cleaned (step (a)), the sun wastewater purified from foreign gases is then led out of the desorption column into a detoxification stage in which a microbiological wastewater treatment of the previously degasified wastewater is carried out by a biomass (step (b), and the wastewater is separated from the biomass, preferably by filtration (step (c) ), and the resulting purified wastewater is then passed into a second desorption column (intermediate column) in which the ammonia-containing wastewater is freed by a desorbing gas from the entrained residual ammonia and possibly carbon dioxide from the detoxification stage (step (d)), and the desorbing gas
  • the free ammonia and possibly carbon dioxide, which is still contained in the wastewater after the reaction stage of the detoxification, can then be done by expulsion with a gas.
  • This is advantageously carried out in a second desorption column (intermediate column), so that the wastewater from the desorption column, which is passed into the detoxification stage, does not have to be returned to the first desorption column.
  • this can be transferred together with the expelled gas, in particular ammonia in the first desorption column.
  • the ammonia can on the same Way as the expelled foreign gas from the first desorption are performed. If the desorption gas is steam, steam is saved.
  • steam is preferably used in process steps (a) and / or (d) as desorption gas (also referred to above as desorbing gas or flue gas).
  • desorption gas also referred to above as desorbing gas or flue gas.
  • any desorption gas can be used which is suitable for the desorption of foreign gases from waste water.
  • desorption columns used in the process according to the invention can be provided with customary mass transfer elements known to the person skilled in the art in order to improve mass transfer.
  • Also claimed is a process for the treatment of waste water in a coking plant by a microbiological detoxification, wherein
  • a sulfurous and nitrogenous wastewater is obtained, which is purified in a first desorption column while passing through a gas (flare gas) from the entrained dissolved foreign gases, so that the desorbed foreign gases and a purified of dissolved gases wastewater are obtained with the gas , and
  • the wastewater purified from foreign gases laden with impurities from the coking process such as nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds
  • a detoxification reactor where the treated wastewater is treated with a microorganism-containing biomass which aerobic or anaerobic degradation of the impurities such as nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds is carried out, and atmospheric oxygen is reacted so that an ammonia-containing wastewater purified from such impurities is obtained, and
  • the wastewater thus obtained is separated from the biomass by ultrafiltration, and which is characterized in that
  • the sputum gas (desorption gas) after passing through the second desorption column (intermediate column) in the mixture with the desorbed ammonia is transferred to the first desorption column, so that the ammonia is carried out with the desorbed in the first desorption column foreign gases from the desorption column, and from the second desorption column (intermediate column) is obtained a purified wastewater, which is largely free of dissolved gases and pollutants or foreign substances, and can be discharged into the environment.
  • the biomass used in accordance with the invention is based on microorganisms which, if necessary, ensure aerobic or aerobic exclusion anaerobic degradation of pollutants or foreign substances from the coking process, such as nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds.
  • pollutants or foreign substances such as nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds.
  • the person skilled in the art is aware of the suitable composition and provision of biomass for this purpose.
  • the separation of the biomass from the wastewater can not be waived since the microbial wastewater from the detoxification still contains activated sludge, which is harmful in the desorption and pollutes the columns .
  • the separation is carried out by filtration, more preferably by ultrafiltration.
  • this separation step in particular ultrafiltration, is comparatively less complicated than the nitrification and denitrification step which follows in the prior art, which then disappear.
  • the desorbed foreign gases from the first desorption column are carried out and introduced into the sulfurous sour gas for a Claus plant (step (f)) from a Claus furnace for combustion of a substream of the sulfur-containing acid gases in sulfur dioxide , and a Claus Reactor for the conversion of sulfur dioxide with the second partial stream of sulfur-containing acid gas in elemental sulfur.
  • the desorbed foreign gases can be supplied after the discharge from the desorption of any further use. This can also be, for example, a process for producing sulfuric acid.
  • the desorption gas is steam.
  • the steam which is provided as desorption gas and which is used for introduction into the intermediate column may be, for example, a steam which is steam from the steam system of the coking plant.
  • the steam which is used to introduce into the intermediate column but may also be a vapor which is generated in a separate steam boiler.
  • any other desorption gas can be used in principle, which is particularly suitable for the desorption of ammonia from waste water.
  • steam for example, carbon dioxide, nitrogen, helium, hydrogen, ethane, propane or mixtures of two or more of these gases can be used. In practice, however, it has been found that steam is the most suitable desorption gas because steam desorbs the ammonia well and also thermally splits ammonium compounds still present in the wastewater.
  • the vapor which is transferred from the second desorption column (intermediate column) into the first desorption column) Kokereikolonne can be further treated, as is customary in the prior art. This can be condensed out, for example, after removal from the Kokereikolonne, and the foreign gases or foreign substances are recovered. It is also possible within the scope of the invention to pass the steam from the coker column into the Claus process. In many coking plants, a Claus plant is also operated to convert the sulfur-containing foreign substances into elemental sulfur. Claus plants for the conversion of hydrogen sulfide or organosulfur compounds into elemental sulfur are known in the art. Embodiments for a Claus process, for example, disclose WO2004014792A1 and WO2004014791A1.
  • the wastewater which is taken from the detoxification stage without further nitrification and denitrification, after separation from the biomass, in particular after ultrafiltration to filter off the biomass usually has a residual content of foreign substances, which is below the permissible limits for release to the environment ,
  • a post-purification may consist, for example, in a particle filtration or in an oxygen enrichment.
  • the wastewater can be treated if necessary before it is released to the water-bearing environment. It is also possible to at least partially recycle the wastewater into the first desorption column.
  • the wastewater can be passed from the second desorption column (intermediate column) in a container in which this is temporarily stored before discharge into the first desorption.
  • the wastewater treatment by the detoxification reactor is usually carried out in cycles and can therefore be arranged several times.
  • Another aspect of the invention relates to a plant for the purification of waste water from a coke oven plant comprising
  • the plant according to the invention preferably comprises
  • the plant according to the invention preferably comprises
  • the plant according to the invention preferably comprises
  • a plant for carrying out a process for the improved purification of waste water from a coke oven plant comprising a first desorption column for the purification of waste water from a coking plant and a detoxification reactor with subsequent ultrafiltration, in which the loaded wastewater led out of the first desorption column and characterized in that the detoxification reactor has no downstream nitrification and denitrification, and the apparatus comprises a second desorption column (intermediate column) into which the purified wastewater is passed after the ultrafiltration equipped with a steam supply line and with a Discharge line for the steam, which is fed into the first desorption column.
  • the process described above has the advantage of enabling wastewater treatment in a coke production plant, dispensing with the expensive steps of nitrification and denitrification required in the prior art after detoxification to convert the ammonium compounds into elemental nitrogen can, and wherein the wastewater substantially contains ammonia as an impurity which can be readily expelled in a subsequent desorption column (intermediate column), and the desorption used in this case can be used without further energy saving in the first desorption column) (Kokereikolonne). This achieves an improved economy of the entire process.
  • Embodiment 1 Process for the treatment of waste water in a coking plant by a microbiological detoxification, wherein
  • a sulfurous and nitrogenous wastewater is obtained in a coking plant, which is purified in a desorption column while passing gas from the entrained dissolved foreign gases, so that with the gas, the desorbed foreign gases and purified from dissolved gases wastewater is obtained, and
  • the wastewater purified from foreign gases which is loaded with impurities from nitrogen compounds, cyanides, phenols, organic compounds and sulfur compounds, is placed in a detoxification reactor where the treated wastewater is treated with a microorganism-containing biomass which aerobic or anaerobic degradation of the nitrogen compounds, cyanides, Phenols, organic compounds and sulfur compounds is carried out, and atmospheric oxygen is reacted so that an impurities purified ammonia-containing wastewater is obtained, and
  • the wastewater thus obtained is purified by ultrafiltration from the biomass, characterized in that
  • Embodiment 2 Process according to embodiment 1, characterized in that the desorbed foreign gases from the desorption are carried out and are introduced after the execution in the sulfur-containing acid gas for a Claus plant, which consists of a Claus furnace for combustion of a partial stream of the sulfur-containing acid gases in sulfur dioxide, and a Claus reactor for converting the sulfur dioxide with the second partial stream of the sulfur-containing acid gas in elemental sulfur.
  • a Claus plant which consists of a Claus furnace for combustion of a partial stream of the sulfur-containing acid gases in sulfur dioxide, and a Claus reactor for converting the sulfur dioxide with the second partial stream of the sulfur-containing acid gas in elemental sulfur.
  • Embodiment 3 Method according to one of the embodiments 1 or 2, characterized in that the desorption gas is steam.
  • Embodiment 4 Process according to embodiment 3, characterized in that the steam used for introduction into the intermediate column is steam from the steam system of the coking plant.
  • Embodiment 5 Process according to embodiment 3, characterized in that the steam which is used for introduction into the intermediate column is produced in a separate steam boiler.
  • Embodiment 6 Method according to one of embodiments 1 -5, characterized in that the waste water from the intermediate column is led into a container in which it is temporarily stored before execution from the process.
  • Embodiment 7 Method according to one of embodiments 1 to 5, characterized in that the waste water from the intermediate column is passed into a container in which this is temporarily stored before being carried out in the desorption column.
  • Embodiment 8 A plant for carrying out a process according to any one of embodiments 1 to 7, wherein it comprises a desorption column for purifying waste water from a coking plant and a detoxification reactor followed by Ultrafiltration in which the loaded wastewater from the desorption column is performed, characterized in that the detoxification reactor has no downstream nitrification and denitrification, and the apparatus comprises an intermediate column, in which the purified wastewater is passed after the ultrafiltration, which with a Steam supply line is equipped, and with an execution line for the steam, which is fed into the desorption.
  • a wastewater containing pollutants (2) with dissolved foreign gases contained therein is introduced from a coking plant.
  • hot steam (3) is introduced countercurrently into the desorption column (1), which may be provided with mass transfer elements (1a) for improved mass transfer.
  • the foreign gases (4) contained in the wastewater (2) are expelled or, if present as thermally labile solids, thermally decomposed and then expelled.
  • the expelled foreign gases (4) and the vapor (3) are removed from the desorption column (1) (13).
  • the wastewater (4a) purified from the foreign gases is then passed via a pump (2a) into the detoxification reactor (5), which consists of a ventilated basin with an air supply (5a), in which the waste water (6) is passed over a biomass (7 ) is purified by aerobic metabolization.
  • the cleaning process can also be assisted by a stirring process (5b).
  • the purified wastewater (8) is discharged from the detoxification reactor (5) into an ultrafiltration (9).
  • the wastewater (8) is thereby freed from the biomass (7) and contains as foreign substances still carbon dioxide and ammonia as metabolized foreign substances.
  • the purified filtered waste water (10) is then added to a second desorption column (intermediate column) (11) in which the purified waste water (10) is treated with hot steam (12).
  • This steam (12) is generated in a separate steam boiler (12a). This expels the carbon dioxide and ammonia. The carbon dioxide and the ammonia, which are expelled, according to the invention with the steam (12b) in the first desorption column (1), whereby the desorption process in the desorption column (1) is supported. The foreign gas expelled from the desorption column (1) is removed from the desorption column (1) with the vapor (13) and can be introduced into the Claus process via a valve (13a).
  • This consists of a Claus furnace (14) for burning a Partial flow (14a) of the hydrogen sulfide and a Claus reactor (15) for the reaction of the residual hydrogen sulfide (14b) with the sulfur dioxide (16) obtained from the Claus furnace (14).
  • the ammonia, which was expelled from the purified wastewater (10) in the second desorption column (intermediate column) (11) is thus placed in the Claus furnace (14) and there at least partially burned to nitrogen.
  • a nitrogen-containing exhaust gas (15a) is obtained.
  • the wastewater (17) from the intermediate column (11) is discharged via a valve (11a) and placed in a storage tank (18). After storage, it is released into the environment (18a).

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  • 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)
  • Physical Water Treatments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne un procédé et une installation permettant une meilleure épuration des eaux usées d'une installation de fours à coke.
PCT/EP2014/000952 2013-04-12 2014-04-09 Procédé permettant une meilleure épuration des eaux usées d'une installation de fours à coke WO2014166631A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006289.6 2013-04-12
DE201310006289 DE102013006289A1 (de) 2013-04-12 2013-04-12 Verfahren zur verbesserten Reinigung von Abwässern aus einer Koksofenanlage

Publications (1)

Publication Number Publication Date
WO2014166631A1 true WO2014166631A1 (fr) 2014-10-16

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Country Link
DE (1) DE102013006289A1 (fr)
TW (1) TW201512110A (fr)
WO (1) WO2014166631A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107021590A (zh) * 2017-04-24 2017-08-08 莱芜市泰山焦化有限公司 基于煤饼高度干馏逐级分离降低蒸氨废水有害成分的方法
CN109133405A (zh) * 2017-06-19 2019-01-04 中国石油化工股份有限公司 延迟焦化含硫污水的净化方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354346A (zh) * 2018-12-25 2019-02-19 黑龙江建龙化工有限公司 一种高CODcr浓度焦化废水处理工艺

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US2777815A (en) 1953-06-08 1957-01-15 Chicago Pump Co Sewage digestion process
DE1168398B (de) 1962-05-24 1964-04-23 Otto & Co Gmbh Dr C Verfahren zur Reinigung von Fluessigkeiten, die Ammoniak und saure Bestandteile enthalten
US3278423A (en) * 1963-09-17 1966-10-11 Woodall Duckham Constr Co Ltd Process for the treatment of aqueous crude effluent liquors from coal carbonizing plants
DE1767108A1 (de) 1968-04-02 1972-03-16 Roechlingsche Eisen & Stahl Verfahren zum Vernichten des Ammoniaks aus den in der Kokerei anfallenden Waessern
US4260462A (en) * 1978-05-26 1981-04-07 United States Steel Corporation Process for separating acid gases and ammonia from dilute aqueous solutions thereof
US4311597A (en) 1979-02-21 1982-01-19 Republic Steel Corporation Method and apparatus for treatment of wastewater
US4537682A (en) * 1982-01-29 1985-08-27 Environmental Research & Technology Activated sludge wastewater treating process
DE4018309A1 (de) 1990-06-08 1991-12-12 Krupp Koppers Gmbh Verfahren zur aufarbeitung von abwasser aus unter erhoehtem druck betriebenen vergasungsanlagen
DE4135763A1 (de) 1991-07-04 1993-01-07 Krupp Koppers Gmbh Verfahren zur gemeinsamen aufarbeitung von nh(pfeil abwaerts)3(pfeil abwaerts)- und/oder h(pfeil abwaerts)2(pfeil abwaerts)s-haltigen prozessabwaessern sowie natriumsulfidhaltiger natronlauge
WO2004014792A1 (fr) 2002-07-25 2004-02-19 Uhde Gmbh Procédé pour séparer de l'acide sulfhydrique de gaz de cokerie et obtenir du soufre élémentaire dans une installation claus
WO2004014791A1 (fr) 2002-07-25 2004-02-19 Uhde Gmbh Reacteur de fission pour installation claus

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DE102011001962A1 (de) 2011-04-11 2012-10-11 Thyssenkrupp Uhde Gmbh Verfahren und Anlage zur biologischen Reinigung von Kokereiabwasser

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Publication number Priority date Publication date Assignee Title
US2777815A (en) 1953-06-08 1957-01-15 Chicago Pump Co Sewage digestion process
DE1168398B (de) 1962-05-24 1964-04-23 Otto & Co Gmbh Dr C Verfahren zur Reinigung von Fluessigkeiten, die Ammoniak und saure Bestandteile enthalten
US3278423A (en) * 1963-09-17 1966-10-11 Woodall Duckham Constr Co Ltd Process for the treatment of aqueous crude effluent liquors from coal carbonizing plants
DE1767108A1 (de) 1968-04-02 1972-03-16 Roechlingsche Eisen & Stahl Verfahren zum Vernichten des Ammoniaks aus den in der Kokerei anfallenden Waessern
US4260462A (en) * 1978-05-26 1981-04-07 United States Steel Corporation Process for separating acid gases and ammonia from dilute aqueous solutions thereof
US4311597A (en) 1979-02-21 1982-01-19 Republic Steel Corporation Method and apparatus for treatment of wastewater
US4537682A (en) * 1982-01-29 1985-08-27 Environmental Research & Technology Activated sludge wastewater treating process
DE4018309A1 (de) 1990-06-08 1991-12-12 Krupp Koppers Gmbh Verfahren zur aufarbeitung von abwasser aus unter erhoehtem druck betriebenen vergasungsanlagen
DE4135763A1 (de) 1991-07-04 1993-01-07 Krupp Koppers Gmbh Verfahren zur gemeinsamen aufarbeitung von nh(pfeil abwaerts)3(pfeil abwaerts)- und/oder h(pfeil abwaerts)2(pfeil abwaerts)s-haltigen prozessabwaessern sowie natriumsulfidhaltiger natronlauge
WO2004014792A1 (fr) 2002-07-25 2004-02-19 Uhde Gmbh Procédé pour séparer de l'acide sulfhydrique de gaz de cokerie et obtenir du soufre élémentaire dans une installation claus
WO2004014791A1 (fr) 2002-07-25 2004-02-19 Uhde Gmbh Reacteur de fission pour installation claus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107021590A (zh) * 2017-04-24 2017-08-08 莱芜市泰山焦化有限公司 基于煤饼高度干馏逐级分离降低蒸氨废水有害成分的方法
CN107021590B (zh) * 2017-04-24 2020-02-21 莱芜市泰山焦化有限公司 基于煤饼高度干馏逐级分离降低蒸氨废水有害成分的方法
CN109133405A (zh) * 2017-06-19 2019-01-04 中国石油化工股份有限公司 延迟焦化含硫污水的净化方法
CN109133405B (zh) * 2017-06-19 2021-10-08 中国石油化工股份有限公司 延迟焦化含硫污水的净化方法

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DE102013006289A1 (de) 2014-10-16

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