METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE
Process water from pulp manufacture is purified in a separator device by mechanical or a combination of mechanical and chemical methods and is thereafter evaporated, at least part of the concentrate resulting from the evaporation being recycled and mixed with the process water fed into the separator...
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| creator | GOERANSSON, GUNNAR SUNDBLAD, BIRGITTA LANDFORS, JOHAN BALTS N, HANS, KE |
| description | Process water from pulp manufacture is purified in a separator device by mechanical or a combination of mechanical and chemical methods and is thereafter evaporated, at least part of the concentrate resulting from the evaporation being recycled and mixed with the process water fed into the separator device. In a preferred embodiment, a precipitant is added to the mixed water comprising the process water and the concentrate. The part of the concentrate not recycled and mixed with the process water is supplied, optionally after further evaporation, with an acid to a pH of 1-5, whereupon resulting flocs and precipitates are removed in a separator device. |
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| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_EP0729439B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>EP0729439B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_EP0729439B13</originalsourceid><addsrcrecordid>eNrjZLDwdQ3x8HdRcPMPUggIDfJ0i_T0c1cICPJ3dg0OVgh3DHENUnAL8vcFSvoEKPg6-oW6OTqHhAa58jCwpiXmFKfyQmluBgU31xBnD93Ugvz41OKCxOTUvNSSeNcAA3MjSxNjSydDYyKUAAAzcShk</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE</title><source>esp@cenet</source><creator>GOERANSSON, GUNNAR ; SUNDBLAD, BIRGITTA ; LANDFORS, JOHAN ; BALTS N, HANS, KE</creator><creatorcontrib>GOERANSSON, GUNNAR ; SUNDBLAD, BIRGITTA ; LANDFORS, JOHAN ; BALTS N, HANS, KE</creatorcontrib><description>Process water from pulp manufacture is purified in a separator device by mechanical or a combination of mechanical and chemical methods and is thereafter evaporated, at least part of the concentrate resulting from the evaporation being recycled and mixed with the process water fed into the separator device. In a preferred embodiment, a precipitant is added to the mixed water comprising the process water and the concentrate. The part of the concentrate not recycled and mixed with the process water is supplied, optionally after further evaporation, with an acid to a pH of 1-5, whereupon resulting flocs and precipitates are removed in a separator device.</description><edition>6</edition><language>eng ; fre ; ger</language><subject>CHEMISTRY ; METALLURGY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING ; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980401&DB=EPODOC&CC=EP&NR=0729439B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980401&DB=EPODOC&CC=EP&NR=0729439B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GOERANSSON, GUNNAR</creatorcontrib><creatorcontrib>SUNDBLAD, BIRGITTA</creatorcontrib><creatorcontrib>LANDFORS, JOHAN</creatorcontrib><creatorcontrib>BALTS N, HANS, KE</creatorcontrib><title>METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE</title><description>Process water from pulp manufacture is purified in a separator device by mechanical or a combination of mechanical and chemical methods and is thereafter evaporated, at least part of the concentrate resulting from the evaporation being recycled and mixed with the process water fed into the separator device. In a preferred embodiment, a precipitant is added to the mixed water comprising the process water and the concentrate. The part of the concentrate not recycled and mixed with the process water is supplied, optionally after further evaporation, with an acid to a pH of 1-5, whereupon resulting flocs and precipitates are removed in a separator device.</description><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>SEPARATION</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLDwdQ3x8HdRcPMPUggIDfJ0i_T0c1cICPJ3dg0OVgh3DHENUnAL8vcFSvoEKPg6-oW6OTqHhAa58jCwpiXmFKfyQmluBgU31xBnD93Ugvz41OKCxOTUvNSSeNcAA3MjSxNjSydDYyKUAAAzcShk</recordid><startdate>19980401</startdate><enddate>19980401</enddate><creator>GOERANSSON, GUNNAR</creator><creator>SUNDBLAD, BIRGITTA</creator><creator>LANDFORS, JOHAN</creator><creator>BALTS N, HANS, KE</creator><scope>EVB</scope></search><sort><creationdate>19980401</creationdate><title>METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE</title><author>GOERANSSON, GUNNAR ; SUNDBLAD, BIRGITTA ; LANDFORS, JOHAN ; BALTS N, HANS, KE</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0729439B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1998</creationdate><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>SEPARATION</topic><topic>TRANSPORTING</topic><topic>TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE</topic><toplevel>online_resources</toplevel><creatorcontrib>GOERANSSON, GUNNAR</creatorcontrib><creatorcontrib>SUNDBLAD, BIRGITTA</creatorcontrib><creatorcontrib>LANDFORS, JOHAN</creatorcontrib><creatorcontrib>BALTS N, HANS, KE</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>GOERANSSON, GUNNAR</au><au>SUNDBLAD, BIRGITTA</au><au>LANDFORS, JOHAN</au><au>BALTS N, HANS, KE</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE</title><date>1998-04-01</date><risdate>1998</risdate><abstract>Process water from pulp manufacture is purified in a separator device by mechanical or a combination of mechanical and chemical methods and is thereafter evaporated, at least part of the concentrate resulting from the evaporation being recycled and mixed with the process water fed into the separator device. In a preferred embodiment, a precipitant is added to the mixed water comprising the process water and the concentrate. The part of the concentrate not recycled and mixed with the process water is supplied, optionally after further evaporation, with an acid to a pH of 1-5, whereupon resulting flocs and precipitates are removed in a separator device.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | METHOD FOR PURIFYING PROCESS WATER FROM PULP MANUFACTURE |
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