WO1989002417A1 - Ameliorations relatives au traitement d'effluents - Google Patents

Ameliorations relatives au traitement d'effluents Download PDF

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Publication number
WO1989002417A1
WO1989002417A1 PCT/GB1988/000743 GB8800743W WO8902417A1 WO 1989002417 A1 WO1989002417 A1 WO 1989002417A1 GB 8800743 W GB8800743 W GB 8800743W WO 8902417 A1 WO8902417 A1 WO 8902417A1
Authority
WO
WIPO (PCT)
Prior art keywords
effluent
units
acrylamide
resin
weight percent
Prior art date
Application number
PCT/GB1988/000743
Other languages
English (en)
Inventor
David M. Owen
Original Assignee
Chemisolv Limited
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 Chemisolv Limited filed Critical Chemisolv Limited
Publication of WO1989002417A1 publication Critical patent/WO1989002417A1/fr

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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents

Definitions

  • the present invention concerns improvements in or relating to effluent treatment. More particularly, the present invention is concerned with the treatment of effluent emanating from apparatus for making paper, board or the like material. Various methods and apparatus are known for the treatment of effluent emanating from apparatus for making paper, board and the like material.
  • Paper, board or the like materials are generally produced by mechanical or chemical pulping techniques and subsequent paper or board formation.
  • Mechanical pulping methods are used chiefly for coniferous moods and aim at a high yield rather than a pure pulp.
  • Chemical or cooking methods remove more of the unwanted materials, resulting in a lower yield but a higher quality pulp.
  • Such chemical or cooking methods are generally divided into two categories: acid liquor and alkaline liquor.
  • NSSC neutral sulphite semi-chemical
  • a method for the treatment of effluent emanating from a neutral sulphite semi-chemical (NSSC) process for the production of paper or board material comprising the addition of an ionic acrylamide polymer resin for removing undesired impurities therefrom.
  • the ionic acrylamide polymer resin is added to the effluent stream of the NSSC process after the formation of the web on the cloth or wire for example.
  • the resin may be added prior to the web formation.
  • the hydrophobic units are preferably derived from styrene or from methyl methacrylate.
  • R and R 1 are each preferably methyl groups.
  • a preferred resin comprises:
  • said units being present in a molar ratio of 85:10:5 respectively and in total forming at least 90 mol percent of the polymer.
  • the processes 1, 2, 3 on the right-hand side of the drawing are involved in the production of various types of paper and/or board material from which the effluent emanating therefrom is treated in accordance with utilisation of normal materials, such as clarifiers and coagulants.
  • normal materials such as clarifiers and coagulants.
  • polyamines as coagulants are added to the effluent at the paint A prior to the effluent passing through various overflow tanks B and then being transmitted by pump means C to a flocculating tank D containing polyacrylamide.
  • the process 4 on the left-hand side of the drawing is utilised in the production of strengthening material for cardboard by the NSSC process.
  • the effluent emanating therefrom is treated with alum and/or polyamine and/or polyethylene imine and/or PDADM at point E as coagulants and then would normally mix with the effluent emanating from the other sections of the plant.
  • an ionic acrylamide polymer resin in accordance with the present invention suitably at point F in particular, the impurities, e.g. black liquor, contained in the effluent are suitably dispersed, the colour of the effluent water being clarified and material being flocculated out in the flocculation tank D.
  • the ionic acrylamide polymer utilised in the invention can be added at other points in the treatment process and even in the section of the plant in which the material is being manufactured.
  • the treatment process is applicable to other liquors, such as black liquor.
  • Any other suitable coagulant material or clarifiers can be added as desired.

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)
  • Paper (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Procédé de traitement d'effluents émanant d'un procédé semi-chimique au sulfite neutre (NSSC), permettant la production de papier ou de carton, comportant l'addition d'une résine polymère d'acrylamide ionique afin d'en retirer les impuretés indésirables.
PCT/GB1988/000743 1987-09-10 1988-09-09 Ameliorations relatives au traitement d'effluents WO1989002417A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8721310 1987-09-10
GB8721310A GB2211180B (en) 1987-09-10 1987-09-10 Treating effluent from a paper or board manufacturing process

Publications (1)

Publication Number Publication Date
WO1989002417A1 true WO1989002417A1 (fr) 1989-03-23

Family

ID=10623573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1988/000743 WO1989002417A1 (fr) 1987-09-10 1988-09-09 Ameliorations relatives au traitement d'effluents

Country Status (3)

Country Link
AU (1) AU2421788A (fr)
GB (1) GB2211180B (fr)
WO (1) WO1989002417A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492188A2 (fr) * 1990-12-28 1992-07-01 OPTIMATION Industrieberatung für Laser- und analytische Messtechnik GmbH Complexes de polyélectrolytes
US5178770A (en) * 1991-07-12 1993-01-12 Nalco Canada Inc. Method of treating bctmp/ctmp wastewater
US5230808A (en) * 1991-06-17 1993-07-27 Nalco Canada Inc. Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater
US5314627A (en) * 1992-07-14 1994-05-24 Nalco Chemical Company Hydrophobic polyelectrolytes used in color removal
US5435922A (en) * 1993-06-14 1995-07-25 Nalco Chemical Company Method of removing color from waste water using an aqueous dispersion polymer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1399129A (en) * 1971-10-18 1975-06-25 Gaf Corp Terpolymers
US3956122A (en) * 1972-12-18 1976-05-11 American Cyanamid Company Cationic arylamide-styrene copolymers and flocculation of sewage therewith
US4392917A (en) * 1979-10-15 1983-07-12 Diamond Shamrock Corporation Amphoteric water-in-oil self-inverting polymer emulsion

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901916A (en) * 1959-12-24 1962-07-25 Ici Ltd Separation process
GB982891A (en) * 1961-04-05 1965-02-10 Ici Ltd Flocculating solids in liquids
GB1373034A (en) * 1971-02-24 1974-11-06 Allied Colloids Ltd Flocculating agents and processes
JPS4948666B1 (fr) * 1971-06-18 1974-12-23
GB1497280A (en) * 1974-12-10 1978-01-05 Ass Portland Cement Agglomerating suspended particulate material in aqueous systems
FR2507606B1 (fr) * 1981-06-12 1985-11-15 Hoechst France Nouvelles dispersions stables, eau dans huile de polymeres cationiques hydrosolubles a base d'acrylate de dimethylaminoethyle salifie ou quaternise, leur procede de fabrication et leur application comme floculants

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1399129A (en) * 1971-10-18 1975-06-25 Gaf Corp Terpolymers
US3956122A (en) * 1972-12-18 1976-05-11 American Cyanamid Company Cationic arylamide-styrene copolymers and flocculation of sewage therewith
US4392917A (en) * 1979-10-15 1983-07-12 Diamond Shamrock Corporation Amphoteric water-in-oil self-inverting polymer emulsion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Chemical Abstracts, vol. 81, no. 23, 1974 (Columbus, Ohio, US) Anon.: "Food additives. Components of paper and paperboard in contact with aqueous and fatty foods", see page 403 *
Chemical Abstracts, vol. 86, no. 16, 18 April 1977 (Columbus, Ohio, US) J. Fischer: "Field experience with an electrolytic method for the purification of NSSC effluent", see page 269 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492188A2 (fr) * 1990-12-28 1992-07-01 OPTIMATION Industrieberatung für Laser- und analytische Messtechnik GmbH Complexes de polyélectrolytes
EP0492188A3 (en) * 1990-12-28 1992-07-22 Optimation Industrieberatung Fuer Laser- Und Analytische Messtechnik Gmbh Polyelectrolyte complexes
US5230808A (en) * 1991-06-17 1993-07-27 Nalco Canada Inc. Liquid suspension of polyethylene oxide for use in treating paper and pulp wastewater
US5178770A (en) * 1991-07-12 1993-01-12 Nalco Canada Inc. Method of treating bctmp/ctmp wastewater
US5314627A (en) * 1992-07-14 1994-05-24 Nalco Chemical Company Hydrophobic polyelectrolytes used in color removal
US5435922A (en) * 1993-06-14 1995-07-25 Nalco Chemical Company Method of removing color from waste water using an aqueous dispersion polymer

Also Published As

Publication number Publication date
GB2211180B (en) 1991-05-22
GB2211180A (en) 1989-06-28
AU2421788A (en) 1989-04-17
GB8721310D0 (en) 1987-10-14

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