CA1046665A - Inexpensive purification of urea waste streams - Google Patents

Inexpensive purification of urea waste streams

Info

Publication number
CA1046665A
CA1046665A CA221,425A CA221425A CA1046665A CA 1046665 A CA1046665 A CA 1046665A CA 221425 A CA221425 A CA 221425A CA 1046665 A CA1046665 A CA 1046665A
Authority
CA
Canada
Prior art keywords
urea
stream
cations
exchange resin
aqueous stream
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
CA221,425A
Other languages
English (en)
French (fr)
Other versions
CA221425S (en
Inventor
William O. Fitzgibbons
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.)
Standard Oil Co
Original Assignee
Standard Oil Co
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 Standard Oil Co filed Critical Standard Oil Co
Application granted granted Critical
Publication of CA1046665A publication Critical patent/CA1046665A/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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Treatment Of Water By Ion Exchange (AREA)
  • Treating Waste Gases (AREA)
CA221,425A 1974-04-24 1975-03-06 Inexpensive purification of urea waste streams Expired CA1046665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46347674A 1974-04-24 1974-04-24

Publications (1)

Publication Number Publication Date
CA1046665A true CA1046665A (en) 1979-01-16

Family

ID=23840226

Family Applications (1)

Application Number Title Priority Date Filing Date
CA221,425A Expired CA1046665A (en) 1974-04-24 1975-03-06 Inexpensive purification of urea waste streams

Country Status (8)

Country Link
US (1) US4188292A (enExample)
JP (1) JPS50139549A (enExample)
BE (1) BE828141A (enExample)
CA (1) CA1046665A (enExample)
DE (1) DE2512718A1 (enExample)
FR (1) FR2268759A1 (enExample)
IT (1) IT1034767B (enExample)
NL (1) NL7504477A (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044602A1 (de) * 1980-11-27 1982-07-01 Uhde Gmbh, 4600 Dortmund Verfahren zur aufbereitung von kondensat aus harnstoff-produktionsanlagen
DE3814819A1 (de) * 1988-05-02 1989-11-16 Wieland Edelmetalle Verfahren und vorrichtung zur behandlung nitrithaltiger abwaesser
FR2632808B1 (fr) * 1988-06-15 1996-08-02 Sofrechim Procede de traitement depolluant des lisiers
US5994444A (en) * 1997-10-16 1999-11-30 Medtronic, Inc. Polymeric material that releases nitric oxide
JP2006068680A (ja) * 2004-09-03 2006-03-16 Purearth Inc 脱硝用還元剤組成物およびその製造方法
CA2698026C (en) * 2007-08-29 2013-06-11 Colonial Chemical Company Method and system for removing impurities from a urea solution
CN106029579A (zh) * 2013-11-11 2016-10-12 菲利普.赖琴 从水去除尿素的方法
SG11202004963YA (en) * 2017-11-28 2020-06-29 Organo Corp Analysis method and analysis apparatus for urea
CN109553679B (zh) * 2019-02-19 2019-08-23 上海医药集团股份有限公司 高纯度乌司他丁及其制备方法和含有乌司他丁的药物组合物

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744840A (en) * 1950-06-16 1956-05-08 Holly Sugar Corp Sugar purification ion exchange method and apparatus
FR1337578A (fr) * 1962-08-25 1963-09-13 Procédé de régénération des résines cationiques
US3313726A (en) * 1963-06-24 1967-04-11 Monsanto Co Process for regenerating ion exchange resins
US3655395A (en) * 1969-01-10 1972-04-11 John N Karnemaat Process for treating waste materials
US3755088A (en) * 1969-08-04 1973-08-28 Hydro Chem & Mineral Corp Internally interconnected multi-stage distillation system

Also Published As

Publication number Publication date
BE828141A (fr) 1975-10-20
FR2268759A1 (en) 1975-11-21
US4188292A (en) 1980-02-12
DE2512718A1 (de) 1975-11-06
NL7504477A (nl) 1975-10-28
IT1034767B (it) 1979-10-10
JPS50139549A (enExample) 1975-11-07
FR2268759B1 (enExample) 1982-04-09

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