BR9917254A - Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process - Google Patents

Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process

Info

Publication number
BR9917254A
BR9917254A BR9917254-2A BR9917254A BR9917254A BR 9917254 A BR9917254 A BR 9917254A BR 9917254 A BR9917254 A BR 9917254A BR 9917254 A BR9917254 A BR 9917254A
Authority
BR
Brazil
Prior art keywords
water
waste
drainage
tailings
paper
Prior art date
Application number
BR9917254-2A
Other languages
Portuguese (pt)
Inventor
Elise E Maury
Rudolf Buelter
Cathy Johnson
Original Assignee
Nalco Chemical 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 Nalco Chemical Co filed Critical Nalco Chemical Co
Priority to BR9917254-2A priority Critical patent/BR9917254A/en
Priority claimed from PCT/US1999/007916 external-priority patent/WO2000061501A1/en
Publication of BR9917254A publication Critical patent/BR9917254A/en

Links

Landscapes

  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

"PROCESSOS PARA A CLARIFICAçãO DE áGUA DE REJEITO, PARA A REMOçãO DE áGUA EM áGUA DE REJEITO, E PARA MELHORAR A RETENçãO E A DRENAGEM DE áGUA DO PROCESSO EM PRODUçãO DE POLPA E DE PAPEL". A invenção é um processo para clarificação, remoção de água ou para melhorar a retenção e a drenagem de água de rejeito industrial ou de aplicação de aprestos de papel com uma quantidade eficaz de pelo menos uma dispersão de um floculante catiónico de polímero solúvel em água em que o melhoramento compreende a adição do dito polímero que tem uma concetração de pelo menos vinte e cinco por cento à dita água de rejeito ou de aprestos de papel. O rejeito industrial é de preferência água de rejeitos de processamento de alimentos, água de rejeitos oleosos água de rejeitos de fábrica de papel e água de rejeitos contaminados por componentes inorgânicos. O apresto de papel pode ser uma suspensão aquosa celulósica."PROCESSES FOR THE CLARIFICATION OF REJECTED WATER, FOR THE REMOVAL OF WATER IN REJECTED WATER, AND TO IMPROVE THE WATER RETENTION AND DRAINAGE OF THE PROCESS IN PULP AND PAPER PRODUCTION". The invention is a process for clarifying, removing water or for improving the retention and drainage of industrial waste water or applying paper coatings with an effective amount of at least one dispersion of a water-soluble polymer cationic flocculant in that the improvement comprises the addition of said polymer which has a concentration of at least twenty-five percent to said waste water or paper wastes. Industrial waste is preferably water from food processing waste, water from oily waste water from paper mill waste and water from waste contaminated by inorganic components. Paper primer can be an aqueous cellulosic suspension.

BR9917254-2A 1999-04-09 1999-04-09 Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process BR9917254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR9917254-2A BR9917254A (en) 1999-04-09 1999-04-09 Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9917254-2A BR9917254A (en) 1999-04-09 1999-04-09 Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process
PCT/US1999/007916 WO2000061501A1 (en) 1999-04-09 1999-04-09 Higher actives dispersion polymer to aid clarification, dewatering, and retention and drainage

Publications (1)

Publication Number Publication Date
BR9917254A true BR9917254A (en) 2002-06-04

Family

ID=25665492

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9917254-2A BR9917254A (en) 1999-04-09 1999-04-09 Processes for the clarification of tailings water, for the removal of water in tailings water, and for improving the water retention and drainage of the pulp and paper production process

Country Status (1)

Country Link
BR (1) BR9917254A (en)

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]