GB1475452A - Method and apparatus for treating sewage or waste sludge - Google Patents

Method and apparatus for treating sewage or waste sludge

Info

Publication number
GB1475452A
GB1475452A GB285875A GB285875A GB1475452A GB 1475452 A GB1475452 A GB 1475452A GB 285875 A GB285875 A GB 285875A GB 285875 A GB285875 A GB 285875A GB 1475452 A GB1475452 A GB 1475452A
Authority
GB
United Kingdom
Prior art keywords
sludge
treated
oxidizing chamber
heat
chamber
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
GB285875A
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.)
Kubota Corp
Original Assignee
Kubota Corp
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
Priority claimed from JP1398574A external-priority patent/JPS50108175A/ja
Priority claimed from JP5371974A external-priority patent/JPS50144673A/ja
Priority claimed from JP13733974A external-priority patent/JPS5162552A/en
Application filed by Kubota Corp filed Critical Kubota Corp
Publication of GB1475452A publication Critical patent/GB1475452A/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

Landscapes

  • 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)
  • Treatment Of Sludge (AREA)

Abstract

1475452 Treating sludges KUBOTA TEKKO KK 22 Jan 1975 [2 Feb 1974 10 May 1974 26 Nov 1974] 2858/75 Heading ClC Sewage or waste sludge is treated by initially heating the sludge in a heat exchanger wherein previously treated sludge is used to heat the untreated sludge, supplying the preheated sludge to an oxidizing chamber of a reactor partitioned into the oxidizing chamber and a heat concentrating chamber, the sludge in the oxidizing chamber being mixed with steam so that its temperature is 130-150‹ C. and with a volume of air 10-30 times that of the sludge being treated, said air containing free O 2 capable of reducing the COD of the sludge by 2-4%, the reaction pressure being kept below 10 kg./cm.<SP>2</SP> during the oxidation treatment which lasts for at least 30 minutes. Apparatus for carrying out the treatment is described.
GB285875A 1974-02-02 1975-01-22 Method and apparatus for treating sewage or waste sludge Expired GB1475452A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1398574A JPS50108175A (en) 1974-02-02 1974-02-02
JP5371974A JPS50144673A (en) 1974-05-10 1974-05-10
JP13733974A JPS5162552A (en) 1974-11-26 1974-11-26 Jukiseiodeino shorihohoto sochi

Publications (1)

Publication Number Publication Date
GB1475452A true GB1475452A (en) 1977-06-01

Family

ID=27280486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB285875A Expired GB1475452A (en) 1974-02-02 1975-01-22 Method and apparatus for treating sewage or waste sludge

Country Status (1)

Country Link
GB (1) GB1475452A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711040A1 (en) * 1976-03-13 1977-09-22 Kubota Ltd PROCESS AND EQUIPMENT FOR Sludge TREATMENT
EP0132224A1 (en) * 1983-06-24 1985-01-23 Ciba-Geigy Ag Bubble column reactor for gas-liquid exchange reactions
EP3560578A1 (en) * 2018-04-27 2019-10-30 Linde Aktiengesellschaft Method for treating a spent liquor containing sulphides

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711040A1 (en) * 1976-03-13 1977-09-22 Kubota Ltd PROCESS AND EQUIPMENT FOR Sludge TREATMENT
EP0132224A1 (en) * 1983-06-24 1985-01-23 Ciba-Geigy Ag Bubble column reactor for gas-liquid exchange reactions
EP3560578A1 (en) * 2018-04-27 2019-10-30 Linde Aktiengesellschaft Method for treating a spent liquor containing sulphides
WO2019207136A1 (en) 2018-04-27 2019-10-31 Linde Aktiengesellschaft Method for treating a sulphide-containing waste lye
CN112020392A (en) * 2018-04-27 2020-12-01 林德有限责任公司 Method for treating sulfide-containing spent lye
CN112020392B (en) * 2018-04-27 2022-11-25 林德有限责任公司 Method for treating sulfide-containing spent lye

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19950121