{"id":316,"date":"2017-08-24T09:37:55","date_gmt":"2017-08-24T07:37:55","guid":{"rendered":"http:\/\/wp.doc-labor.de\/?page_id=316"},"modified":"2018-01-24T16:43:46","modified_gmt":"2018-01-24T14:43:46","slug":"drinking-water-2-2-2","status":"publish","type":"page","link":"https:\/\/doc-labor.de\/?page_id=316","title":{"rendered":"Marine Water"},"content":{"rendered":"

How is the UF and membrane fouling potential for given raw water?<\/strong><\/p>\n

We quantify colloidal Transparent Exopolymer Particles < 0.45\u00b5m (cTEP) and from this we can assess the fouling potential.<\/p>\n

\n

We add an antiscalant to our feed water. Will it induce RO fouling?<\/strong><\/p>\n

If we get a sample of the antiscalant we can see how it behaves. Will it complex to humics? Will it be found more or less quantitatively in the RO concentrate?<\/p>\n

\n

Examples<\/h3>\n\n
<\/i><\/i>Diversity of marine NOM<\/h5><\/a><\/div>
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 <\/p>\n

An illustrative figure showing how complex and heterogeneous marine NOM can be.<\/p>\n<\/div>

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<\/i><\/i>Biopolymers as membrane foulants<\/h5><\/a><\/div>
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 <\/p>\n

Biopolymers are assumed to be primarily responsible for UF and RO membrane fouling.<\/p>\n

This is illustrated in this example of 2 sites with heavy or almost no fouling.<\/p>\n

The only difference in the raw waters is the concentration and quality of the biopolymer fraction.<\/p>\n

Of particular importance appears a sub-fraction of biopolymers which elutes at the exclusion volume of the column.
\nThis material is very high in molecular weight (> 150 kDa) and is referred to by some authors as \u201dTEP\u201d, although it is – by definition – dissolved (< 0.45 um).<\/p>\n<\/div>

\n

\"\"<\/p>\n

 <\/p>\n<\/div><\/div>\n<\/div><\/div><\/div>\n

<\/i><\/i>Antiscalants and NOM<\/h5><\/a><\/div>
\n
\n

 <\/p>\n

Antiscalants are often added in sub to low ppm concentrations to suppress membrane fouling.<\/p>\n

With LC-OCD, antiscalants can be detected and quantified in the presence of NOM.<\/p>\n

 <\/p>\n<\/div>

\n

\"\"<\/p>\n<\/div><\/div>\n<\/div><\/div><\/div>\n

<\/i><\/i>Reproducability study on marine water<\/h5><\/a><\/div>
\n
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 <\/p>\n

A reproducibility test of a marine water showing the main important data obtained with LC-OCD.<\/p>\n<\/div>

\n

\"\"<\/p>\n<\/div><\/div>\n<\/div><\/div><\/div><\/div>\n\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

How is the UF and membrane fouling potential for given raw water? We quantify colloidal Transparent Exopolymer Particles < 0.45\u00b5m (cTEP) and from this we can assess the fouling potential. We add an antiscalant to our feed water. Will it … Continued<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":41,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"page-fullwidth.php","meta":{"footnotes":""},"class_list":["post-316","page","type-page","status-publish","hentry"],"jetpack_shortlink":"https:\/\/wp.me\/P9uTgp-56","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/pages\/316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/doc-labor.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=316"}],"version-history":[{"count":3,"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/pages\/316\/revisions"}],"predecessor-version":[{"id":621,"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/pages\/316\/revisions\/621"}],"up":[{"embeddable":true,"href":"https:\/\/doc-labor.de\/index.php?rest_route=\/wp\/v2\/pages\/41"}],"wp:attachment":[{"href":"https:\/\/doc-labor.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}