1.
International Journal of Environmental Research. 2008; 2 (3): 269-274
em Inglês
| IMEMR
| ID: emr-86904
RESUMO
In this study, NF membrane was used for surface water treatment. The rejection of organic material, measured as Total organic carbon [TOC], by Nanofiltration was examined. The effects of application of pre-ozonation and pre-chlorination on TOC removal are discussed and their performances are compared with the performances of Nanofiltraion system without pretreatment process. In NF, natural organic rejection is high and no pre-treatment are required. Coagulation targets large hydrophobic organics which foul NF membranes by precipitation and gel layer formation. The results showed that TOC removal in Preozonation-coagulation was higher than prechlorination-Coagulation. In addition pretreatment increases Nanofiltration efficiency