FR2364184A1 - Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations - Google Patents

Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations

Info

Publication number
FR2364184A1
FR2364184A1 FR7627490A FR7627490A FR2364184A1 FR 2364184 A1 FR2364184 A1 FR 2364184A1 FR 7627490 A FR7627490 A FR 7627490A FR 7627490 A FR7627490 A FR 7627490A FR 2364184 A1 FR2364184 A1 FR 2364184A1
Authority
FR
France
Prior art keywords
anaerobic
stage
aerobic
fermentation
acid
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Withdrawn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
FR7627490A
Other languages
French (fr)
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.)
Vysoka Skola Chemicko Technologicka V Praze
Original Assignee
Vysoka Skola Chemicko Technologicka V Praze
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 Vysoka Skola Chemicko Technologicka V Praze filed Critical Vysoka Skola Chemicko Technologicka V Praze
Priority to FR7627490A priority Critical patent/FR2364184A1/en
Publication of FR2364184A1 publication Critical patent/FR2364184A1/en
Withdrawn legal-status Critical Current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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Treatment Of Sludge (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Process for the purificn. of waste water having a high content of organic material comprises several stages. The first stage is initially anaerobic fermentation by means of a microbial culture at 20-50 degrees C in acid medium for a residue time of 0.1-0.8 d. kg-1.m3 with conversion of the contained oxygen to a mixt. of organic acids; this is followed by aerobic fermentation for a residence time of 0.03 d. kg-1. m3. At the second stage the mixt. is submitted to an anaerobic methane fermentation by an anaerobic microorganism culture for 6-15 days. The resulting mixt. may then if desired be further purified by a second aerobic stage. By present methods involving an anaerobic followed by an anaerobic stage, in the 1st stage, e.g. methane fermentation, the acids formed lower the pH and inhibit the fermentation. Chalk is used to neutralise the acid but this complicates the process. The above process converts the acids to CO2/water resulting in simplification of the process and avoidance of the use of chalk.
FR7627490A 1976-09-13 1976-09-13 Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations Withdrawn FR2364184A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7627490A FR2364184A1 (en) 1976-09-13 1976-09-13 Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7627490A FR2364184A1 (en) 1976-09-13 1976-09-13 Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations

Publications (1)

Publication Number Publication Date
FR2364184A1 true FR2364184A1 (en) 1978-04-07

Family

ID=9177622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7627490A Withdrawn FR2364184A1 (en) 1976-09-13 1976-09-13 Purifying waste water of high organic content - first acid anaerobic, then aerobic, then anaerobic methane fermentations

Country Status (1)

Country Link
FR (1) FR2364184A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1658083B2 (en) * 1951-01-28 1973-10-18 Braunschweigische Maschinenbauanstalt, 3300 Braunschweig
FR2194658A1 (en) * 1972-08-04 1974-03-01 South African Inventions
FR2324581A1 (en) * 1975-05-14 1977-04-15 Hitachi Ltd METHOD AND SYSTEM FOR THE ANAEROBIC TREATMENT OF BIOCHEMICAL WASTE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1658083B2 (en) * 1951-01-28 1973-10-18 Braunschweigische Maschinenbauanstalt, 3300 Braunschweig
FR2194658A1 (en) * 1972-08-04 1974-03-01 South African Inventions
FR2324581A1 (en) * 1975-05-14 1977-04-15 Hitachi Ltd METHOD AND SYSTEM FOR THE ANAEROBIC TREATMENT OF BIOCHEMICAL WASTE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV913/75 *

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Legal Events

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