DE2816979A1 - Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln. - Google Patents

Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln.

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Publication number
DE2816979A1
DE2816979A1 DE19782816979 DE2816979A DE2816979A1 DE 2816979 A1 DE2816979 A1 DE 2816979A1 DE 19782816979 DE19782816979 DE 19782816979 DE 2816979 A DE2816979 A DE 2816979A DE 2816979 A1 DE2816979 A1 DE 2816979A1
Authority
DE
Germany
Prior art keywords
potassium permanganate
treatment plants
waste gas
scrubbing
sewage treatment
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.)
Withdrawn
Application number
DE19782816979
Other languages
German (de)
Inventor
Heinz Gresch
Heinz Hoelter
Heinrich Igelbuescher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19782816979 priority Critical patent/DE2816979A1/en
Publication of DE2816979A1 publication Critical patent/DE2816979A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons

Abstract

Elimination of odorous substances (I), e.g. H2S, NH3, amines, nitrous and other organic substances, from waste gas is effected by scrubbing with water contg. FeSO4 (e.g. as pickling liquor salt, FeSO4.7H2Oe and KmNO4. Scrubbing can be carried out in 2 stages, one using FeSO4 soln. and the other KMnO4 soln. The process is useful for scrubbing wate gas from sewate treatment plants.

Description

Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application

'Verfahren zur Beseitigung von geruchsbildenden Stoffen wie Schwefelwasserstoff, Ammoniak, Aminen, Nitrose und sonstigen organischen Stoffen, aus der Abluft.' Es ist bekannt, Abgase, die mit geruchsbildenden organischen Stoffen belastet sind einer Oxidationswasserwäsche mittels Kaliumpermanganat zu unterziehen.'' Process for removing odor-causing substances such as hydrogen sulphide, Ammonia, amines, nitrous and other organic substances from the exhaust air. ' It is known, exhaust gases that are polluted with odor-causing organic substances to be subjected to oxidation water washing using potassium permanganate.

Ferner ist die saure Wasserwäsche mittels Schwefelsäure hinter der Oxidationswäsche bekannt, um Ammoniak, Amine usw. zu binden.Furthermore, the acidic water washing by means of sulfuric acid is behind the Oxidation scrubbing is known to bind ammonia, amines, etc.

Diese Zweistufenwaschung erfordert höhere Investitionen und die Betriebsmittelverbände hinsichtlich des Kaliumpermanganat- und Schwefelsäureverbräuche sind auch erhöht.This two-stage washing requires higher investments and the resource associations with regard to potassium permanganate and sulfuric acid consumption are also increased.

Es wurde gefunden, daß sich diese Abgase, insbesondere die Abluft von Abwasserkläranlagen in einer Waschstufe durch Zuimpfung von Kaliumpermanganat und Beizlaugensalz (FeSO4 7H20) gemeinsam zum Waschwasser durchführen läßt.It has been found that these exhaust gases, especially the exhaust air of sewage treatment plants in a washing stage by inoculating potassium permanganate and pickling liquor salt (FeSO4 7H20) can be carried out together with the washing water.

Das Beizlaugensalz, das in Stahlwerken als Abfallstoff anfällt,kann als 0,5 - 10 %ige Lösung über eine Impfstation dem Waschwasser entsprechend der Menge geruchsbildender Stoffe zugeimpft werden. Die Eisenionen des FeSO4. 7H2 0 binden vorzugsweise den Schwefelwasserstoff und die Nitrose und die freigesetzten Sulfationen, das Ammoniak, die Amine und sonstige Stoffe, die mit SO4"-Ionen eine Verbindung eingehen. Je nach Verhältnis, z. B. Ammoniak/Amine zu Schwefel-Wasserstoff bilden sich: a) Bei einem stöchiometrisch ausgeglichenen Verhältnis die entsprechenden Salze bei voller Umsetzung des Eisen II Sulfates.The pickling liquor salt, which is a waste material in steelworks, can as a 0.5 - 10% solution via an inoculation station to the washing water according to Amount of odor-causing substances are inoculated. The iron ions of FeSO4. 7H2 0 bind preferentially the hydrogen sulfide and the nitrous and the released ones Sulphate ions, ammonia, amines and other substances that interact with SO4 "ions Enter into connection. Depending on the ratio, e.g. B. ammonia / amines to sulfur-hydrogen form: a) If the ratio is stoichiometrically balanced, the corresponding Salts with full conversion of the iron II sulfate.

b) Bei einem Überschuß an Ammoniak/Amine das entsprechende Sulfat und Eisenhydroxid.b) If there is an excess of ammonia / amines, the corresponding sulfate and iron hydroxide.

c) Bei einem Überschuß an H2 5 das entsprechende Eisensulfid und freie S04,1-Ionen.c) If there is an excess of H2 5, the corresponding iron sulfide and free SO4.1 ions.

Entsprechend der oben angeführten Schadstoffverhältnisse wird die Zugabe der Eisen II Sulfatimpfmenge über den pH-Wert der Waschlösung gesteuert. Der pH-Wert der Waschlösung sollte pH 6,5 nicht unterschreiten.According to the pollutant ratios listed above, the The addition of the iron II sulfate inoculum is controlled by the pH of the washing solution. The pH of the washing solution should not fall below pH 6.5.

Der Kaliumpermanganatzusatz über eine Impfstation als 0,5 Sige Lösung bewirkt als starkes Oxidationsmittel die Beseitigung aller nicht erfassten, insbesondere der organischen Geruchsschadstoffe.The potassium permanganate addition via a vaccination station as a 0.5 Sige solution As a strong oxidizing agent, causes the elimination of all unrecognized, in particular of organic odor pollutants.

Je nach Zusatzmenge an Kaliumpermanganat kann besonders wie unter Punkt C beschrieben der Schwefelstoff und das FeS zu Schwefel bzw. beim FeS zu Schwefel und dreiwertigem Eisen oxidiert werden.Depending on the amount of potassium permanganate added, especially as below Point C describes the sulfur and the FeS to sulfur and in the case of FeS to sulfur and trivalent iron are oxidized.

Es ich auch möglich, die Abgase bzw. die Abluft von Abwasserkläranlagen in zwei Waschstufen zu reinigen, wobei die erste Stufe mit Beizlaugenzusatz (FeSO4 . 7H20) betrieben wird und die zweite Stufe durch Zusatz von Kaliumpermanganat als Oxidationsstufe geschaltet ist.It is also possible to use the exhaust gases or the exhaust air from sewage treatment plants to be cleaned in two washing stages, the first stage with the addition of pickling liquor (FeSO4 . 7H20) is operated and the second stage by adding potassium permanganate as Oxidation level is switched.

Die ablaufenden Wässer beider Waschstufen können über einen Waschwasserbehälter geführt werden.The draining water from both washing stages can be stored in a washing water tank be guided.

Patentansprüche:Patent claims:

Claims (1)

Patentansprüch: Anspruch 1: Beseitigung von geruchsbildenden Stoffen wie Schwefelwasserstoff, Ammoniak, Aminen, Nitrosen und sonstigen organischen Stoffen, aus der Abluft, dadurch gekennzeichnet, daß zur Entfernung von Geruchsstoffen aus Abgasen eine Waschung der Gase mit Wasser dem Eisen II Sulfat (z.B. als Beizlaugesalz zugemischt) und Kaliumpermanganat zugesetzt ist.Claims: Claim 1: Removal of odor-causing substances such as hydrogen sulphide, ammonia, amines, nitrous and other organic substances, from the exhaust air, characterized in that for the removal of odorous substances Offgassing is a washing of the gases with water containing iron II sulfate (e.g. as pickling liquor salt mixed in) and potassium permanganate is added. Anspruch 2: Beseitigung von geruchsbildenden Stoffen wie Schwefelwasserstoff, Ammoniak, Aminen, Nitrosen und sonstigen organischen Stoffen, aus der Abluft, nach Anspruch 1 dadurch gekennzeichnet, daß das Abgas vorzugsweise 2-stufig gewaschen wird, wobei das Waschwasser der ersten Stufe mit Eisen II Sulfat und die 2. Waschstufe mit Kaliumpermanganatzusatz betrieben wird, oder umgekehrt.Claim 2: Removal of odor-causing substances such as hydrogen sulfide, Ammonia, amines, nitrous and other organic substances from the exhaust air Claim 1, characterized in that the exhaust gas is preferably washed in 2 stages the washing water of the first stage with iron II sulfate and the 2nd washing stage is operated with the addition of potassium permanganate, or vice versa.
DE19782816979 1978-04-19 1978-04-19 Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln. Withdrawn DE2816979A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782816979 DE2816979A1 (en) 1978-04-19 1978-04-19 Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782816979 DE2816979A1 (en) 1978-04-19 1978-04-19 Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln.

Publications (1)

Publication Number Publication Date
DE2816979A1 true DE2816979A1 (en) 1979-10-31

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DE19782816979 Withdrawn DE2816979A1 (en) 1978-04-19 1978-04-19 Deodorisation of waste gas e.g. from sewage treatment plants - involves scrubbing with ferrous sulphate and potassium permanganate soln.

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Country Link
DE (1) DE2816979A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370306A (en) * 1979-04-03 1983-01-25 Dechema Deutsche Gesellschaft Fur Chemisches Apparatewesen E V Process for separation of traces of gaseous contaminants from waste gases by chemical absorption
CN112591795A (en) * 2020-12-28 2021-04-02 湖南众鑫新材料科技股份有限公司 Method for treating tail gas generated in preparation of low-valence vanadium from ammonium metavanadate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE516851C (en) * 1927-09-17 1931-01-30 August Kristensson Process for removing hydrogen sulfide from gases
DE521648C (en) * 1928-12-30 1931-03-29 Karl Eugen Spanier Dipl Ing Process for removing hydrogen sulphide from carbon distillation gases
DE971405C (en) * 1953-07-18 1959-01-22 F J Collin Ag Zur Verwertung V Process for the utilization of sulfuric acid iron (II) salt solutions, in particular pickling liquors
DE2125036A1 (en) * 1970-08-05 1972-02-10 Cit Alcatel Process for physico-chemical cleaning of smoke and gases and device for its implementation
DE2307619A1 (en) * 1972-02-19 1973-08-30 Mitsubishi Metal Mining Co Ltd PROCESS FOR THE REMOVAL OF NITROGEN OXIDES FROM GASEOUS MIXTURES

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE516851C (en) * 1927-09-17 1931-01-30 August Kristensson Process for removing hydrogen sulfide from gases
DE521648C (en) * 1928-12-30 1931-03-29 Karl Eugen Spanier Dipl Ing Process for removing hydrogen sulphide from carbon distillation gases
DE971405C (en) * 1953-07-18 1959-01-22 F J Collin Ag Zur Verwertung V Process for the utilization of sulfuric acid iron (II) salt solutions, in particular pickling liquors
DE2125036A1 (en) * 1970-08-05 1972-02-10 Cit Alcatel Process for physico-chemical cleaning of smoke and gases and device for its implementation
DE2307619A1 (en) * 1972-02-19 1973-08-30 Mitsubishi Metal Mining Co Ltd PROCESS FOR THE REMOVAL OF NITROGEN OXIDES FROM GASEOUS MIXTURES

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370306A (en) * 1979-04-03 1983-01-25 Dechema Deutsche Gesellschaft Fur Chemisches Apparatewesen E V Process for separation of traces of gaseous contaminants from waste gases by chemical absorption
CN112591795A (en) * 2020-12-28 2021-04-02 湖南众鑫新材料科技股份有限公司 Method for treating tail gas generated in preparation of low-valence vanadium from ammonium metavanadate
CN112591795B (en) * 2020-12-28 2023-09-12 湖南众鑫新材料科技股份有限公司 Treatment method for tail gas of low-valence vanadium prepared from ammonium metavanadate

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