GB1535886A - Removal of so2 from sulphite-and/or bisulphate containing effluents - Google Patents

Removal of so2 from sulphite-and/or bisulphate containing effluents

Info

Publication number
GB1535886A
GB1535886A GB14540/77A GB1454077A GB1535886A GB 1535886 A GB1535886 A GB 1535886A GB 14540/77 A GB14540/77 A GB 14540/77A GB 1454077 A GB1454077 A GB 1454077A GB 1535886 A GB1535886 A GB 1535886A
Authority
GB
United Kingdom
Prior art keywords
sulphite
waste water
sulphurdioxide
air
bisulphate
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.)
Expired
Application number
GB14540/77A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1535886A publication Critical patent/GB1535886A/en
Expired 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
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation
    • 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
    • B01D53/50—Sulfur oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/24—Sulfates of ammonium
    • C01C1/245—Preparation from compounds containing nitrogen and sulfur
    • C01C1/246—Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds
    • C01C1/247—Preparation from compounds containing nitrogen and sulfur from sulfur-containing ammonium compounds by oxidation with free oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Treating Waste Gases (AREA)

Abstract

Sulphite- or hydrogen-sulphite-containing waste waters are purified with simultaneous substantial recovery of sulphur dioxide by establishing an acidic pH range in the sulphur-dioxide-containing waste water and expelling the liberated sulphurdioxide at elevated temperatures using air as far as a residual sulphurdioxide concentration of 1-10 g of SO2/l of waste water. After the treatment with air, the waste water is reacted at temperatures of 20 to 230 DEG C with industrially pure oxygen at pressures of 1 to 30 bar at a redox potential between 300 and 600 mV up to virtually complete formation of sulphate. The redox potentials are based on a measurement which is performed at a measurement position outside the reaction vessel using a platinum electrode having an Ag/AgCl comparison electrode.
GB14540/77A 1976-04-07 1977-04-06 Removal of so2 from sulphite-and/or bisulphate containing effluents Expired GB1535886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762615037 DE2615037A1 (en) 1976-04-07 1976-04-07 REMOVAL OF SULFUR DIOXIDE FROM SULPHITE-CONTAINING WASTE

Publications (1)

Publication Number Publication Date
GB1535886A true GB1535886A (en) 1978-12-13

Family

ID=5974700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14540/77A Expired GB1535886A (en) 1976-04-07 1977-04-06 Removal of so2 from sulphite-and/or bisulphate containing effluents

Country Status (8)

Country Link
JP (1) JPS52123375A (en)
BE (1) BE853320A (en)
CH (1) CH630587A5 (en)
DE (1) DE2615037A1 (en)
FR (1) FR2347316A1 (en)
GB (1) GB1535886A (en)
NL (1) NL7703728A (en)
SE (1) SE7704038L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ308440B6 (en) * 2019-09-12 2020-08-19 ECOCOAL, s.r.o. Method and device for processing sludges containing alkaline earth metal sulphates and sulphates

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2657011B2 (en) * 1976-12-16 1978-12-14 Hoechst Ag, 6000 Frankfurt Process for cleaning the waste water resulting from the production of hydroxyaromatics with the simultaneous recovery of alkali sulphate
EP0224627A1 (en) * 1985-12-06 1987-06-10 Mitsubishi Jukogyo Kabushiki Kaisha Method for desulfurizing exhaust gas

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761409A (en) * 1971-10-06 1973-09-25 Texaco Inc Continuous process for the air oxidation of sour water
DE2534892B2 (en) * 1975-08-05 1979-07-05 Bayer Ag, 5090 Leverkusen Process for the oxidative treatment of wastewater containing sulphides, sulphites and thiosulphates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ308440B6 (en) * 2019-09-12 2020-08-19 ECOCOAL, s.r.o. Method and device for processing sludges containing alkaline earth metal sulphates and sulphates

Also Published As

Publication number Publication date
SE7704038L (en) 1977-10-08
JPS52123375A (en) 1977-10-17
CH630587A5 (en) 1982-06-30
DE2615037A1 (en) 1977-10-20
BE853320A (en) 1977-10-07
FR2347316A1 (en) 1977-11-04
NL7703728A (en) 1977-10-11

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee