Effects of magnetic ion-exchange resin addition during coagulation on floc properties and membrane filtration.
Water Environ Res
; 82(3): 259-66, 2010 Mar.
Article
em En
| MEDLINE
| ID: mdl-20369570
ABSTRACT
The application of magnetic ion-exchange resin (MIEX) during chemical coagulation was investigated for the removal of organic matters responsible for fouling in membrane processes. Two different coagulants were used-polyaluminium chloride (PAC1) and polyaluminum chloride silicate (PACS). The MIEX addition during coagulation with both PAC1 and PACS considerably enhanced removal of dissolved organic carbon. Coagulation with MIEX treatment substantially removed all portions of natural organic matter (NOM), while the MIEX treatment alone effectively removed the hydrophobic and transphilic portions of NOM. The enhanced NOM removal by PAC1 coagulation with the addition of MIEX had positive effects on membrane flux at moderate transmembrane pressure conditions. However, the almost identical flux patterns were reported in the experiments of coagulation with PACS and PACS with MIEX addition. The results of the specific cake resistances indicated that the MIEX addition substantially decreased the resistances. The larger size distributions of PAC1 with MIEX corresponded well with the flux improvement.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Gerenciamento de Resíduos
/
Hidróxido de Alumínio
/
Silicatos de Alumínio
/
Resinas de Troca Iônica
Idioma:
En
Revista:
Water Environ Res
Assunto da revista:
SAUDE AMBIENTAL
/
TOXICOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article