GB1398661A - Treatment of waste water - Google Patents

Treatment of waste water

Info

Publication number
GB1398661A
GB1398661A GB4031773A GB4031773A GB1398661A GB 1398661 A GB1398661 A GB 1398661A GB 4031773 A GB4031773 A GB 4031773A GB 4031773 A GB4031773 A GB 4031773A GB 1398661 A GB1398661 A GB 1398661A
Authority
GB
United Kingdom
Prior art keywords
plant cells
waste water
exceeding
isoelectric point
contacted
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
GB4031773A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 JP47084535A external-priority patent/JPS5238345B2/ja
Priority claimed from JP9980372A external-priority patent/JPS4957659A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1398661A publication Critical patent/GB1398661A/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
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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
    • C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C02F2101/22—Chromium or chromium compounds, e.g. chromates
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Biotechnology (AREA)
  • Botany (AREA)
  • Removal Of Specific Substances (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

1398661 Waste water treatment HITACHI Ltd 24 Aug 1973 [25 Aug 1972 6 Oct 1972] 40317/73 Heading C1C Material having a cationic or anionic charge is removed from waste water by contacting the waste water with plant cells at a pH exceeding the isoelectric point of the plant cells when the material to be removed is cationic or at a pH not exceeding the isoelectric point of the plant cells when the material is anionic so as to adsorb the material on the plant cells and separating the plant cells. The pH of the waste water may be adjusted before contacting with the cells or the pH of the mixture may be adjusted after contacting. The cationic material removed may be a heavy metal, such as Mn, Ni, Ag, Cd, Hg or Pb and the anionic material removed may be an acid dye, a mordant dye or hexavalent chromium. The plant cells may be obtained from yeasts, green algae and permanent tissues of seed plants. Where the waste water contains both cationic and anionic material the water may first be contacted with plant cells at a pH exceeding their isoelectric point and then be contacted with plant cells (which may be the same as or different from the first plant cells) at a pH not exceeding their isoelectric point. Where hexavalent chromium is to be removed the waste water may first be contacted with plant cells at a pH not exceeding their isoelectric point and then be contacted with plant cells at a pH exceeding their isoelectric point to remove chromium which has been converted to Cr<SP>3+</SP> on contact with the plant cells. The plant cells may be separated from the waste water by centrifugation and/or by using a precipitation tube.
GB4031773A 1972-08-25 1973-08-24 Treatment of waste water Expired GB1398661A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47084535A JPS5238345B2 (en) 1972-08-25 1972-08-25
JP9980372A JPS4957659A (en) 1972-10-06 1972-10-06

Publications (1)

Publication Number Publication Date
GB1398661A true GB1398661A (en) 1975-06-25

Family

ID=26425559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4031773A Expired GB1398661A (en) 1972-08-25 1973-08-24 Treatment of waste water

Country Status (1)

Country Link
GB (1) GB1398661A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244485A (en) * 1990-05-30 1991-12-04 Us Energy Method of removal of metal atoms and explosives from aqueous solution using suspended plant cells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2244485A (en) * 1990-05-30 1991-12-04 Us Energy Method of removal of metal atoms and explosives from aqueous solution using suspended plant cells

Also Published As

Publication number Publication date
DE2342913A1 (en) 1974-03-28
DE2342913B2 (en) 1976-11-04

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Legal Events

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