EP 3020862 B1 20190220 - SLIME CONTROL METHOD
Title (en)
SLIME CONTROL METHOD
Title (de)
VERFAHREN ZUR SCHLAMMBEKÄMPFUNG
Title (fr)
PROCÉDÉ DE CONTRÔLE DE BOUE
Publication
Application
Priority
- JP 2013144051 A 20130709
- JP 2013144052 A 20130709
- JP 2014068365 W 20140709
Abstract (en)
[origin: EP3020862A1] An efficient slime control method in a white water circulation line in a paper making process is provided. The present slime control method in a white water circulation line in a paper making process including the steps of: aerating with an oxygen-containing gas either one or both of a white water circulation line and the water feeding line for feeding water into the white water circulation line; and adding a slime control agent to at least one line of the white water circulation line and the water feeding line aerated with the oxygen-containing gas in the aerating step. Preferably, the step of measuring at least one selected from the group of measurement items consisting of the oxidation reduction potential, the sulfite ion concentration and the amount of dissolved oxygen in the white water circulation line is further included. Based on the measurement result obtained in the measurement step, the aeration rate in the aerating step and/or the amount of the slime control agent added in the adding step of the slime control agent may be regulated.
IPC 8 full level
D21H 21/04 (2006.01); D21H 21/02 (2006.01)
CPC (source: EP)
D21H 21/02 (2013.01); D21H 21/04 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3020862 A1 20160518; EP 3020862 A4 20170315; EP 3020862 B1 20190220; CN 105378178 A 20160302; CN 105378178 B 20170711; ES 2716891 T3 20190617; KR 101793979 B1 20171106; KR 20160029739 A 20160315; WO 2015005404 A1 20150115
DOCDB simple family (application)
EP 14822321 A 20140709; CN 201480039317 A 20140709; ES 14822321 T 20140709; JP 2014068365 W 20140709; KR 20157033845 A 20140709