Comparison of natural organic matter removal by ultrafiltration, granular activated carbon filtration and full scale conventional water treatment

2018 ◽  
Vol 6 (5) ◽  
pp. 6282-6289 ◽  
Author(s):  
S.S. Marais ◽  
E.J. Ncube ◽  
T.A.M Msagati ◽  
B.B. Mamba ◽  
Thabo T.I. Nkambule
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Water Treatment ◽  
Natural Organic Matter ◽  
Granular Activated Carbon ◽  
Full Scale ◽  
Organic Matter Removal ◽  
Carbon Filtration

Influence of natural organic matter (NOM) fouling on the removal of pharmaceuticals by nanofiltration and activated carbon filtration

2007 ◽  
Vol 7 (4) ◽  
pp. 17-23 ◽  
Author(s):  
S.G.J. Heijman ◽  
A.R.D. Verliefde ◽  
E.R. Cornelissen ◽  
G. Amy ◽  
J.C. van Dijk
Keyword(s):  
Organic Matter ◽  
Activated Carbon ◽  
Natural Organic Matter ◽  
Granular Activated Carbon ◽  
Diverse Group ◽  
Sequential Combination ◽  
Carbon Filtration ◽  
Positively Charged ◽  
Micro Pollutants

The influence of natural organic matter (NOM) fouling on the rejection of micro pollutants in nanofiltration (NF) and the adsorption during granular activated carbon (GAC) filtration is investigated for a diverse group of pharmaceuticals. These pharmaceuticals were first spiked in feed waters filtered through a virgin NF-membrane and a corresponding NOM fouled membrane. The differences in rejection were never larger than 5%. The rejection of the negatively charged molecules on the fouled membrane slightly decreased and the rejection of the positively charged molecules slightly increased. These trends can be explained by a decrease of the repulsion of negative compounds and a decrease of the attraction of positive compounds by the fouled membrane. The sequential combination of NF and GAC was very effective in removing all types of pharmaceuticals. Compounds not well rejected by nanofiltration were more readily adsorbed by the GAC.

scholarly journals Partial renewal of granular activated carbon biofilters for improved drinking water treatment

2018 ◽  
Vol 4 (4) ◽  
pp. 529-538 ◽  
Author(s):  
Nashita Moona ◽  
Kathleen R. Murphy ◽  
Mia Bondelind ◽  
Olof Bergstedt ◽  
Thomas J. R. Pettersson
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Organic Matter ◽  
Activated Carbon ◽  
Water Treatment ◽  
Natural Organic Matter ◽  
Drinking Water Treatment ◽  
Granular Activated Carbon ◽  
Nordic Countries ◽  
Drinking Waters

There is a trend of increasing natural organic matter (NOM) in raw drinking waters of Nordic countries due to climate change.

The Role of Ozonation and Activated Carbon Filtration in the Natural Organic Matter Removal from Drinking Water

2006 ◽  
Vol 27 (10) ◽  
pp. 1171-1180 ◽  
Author(s):  
A. Matilainen ◽  
P. Iivari ◽  
J. Sallanko ◽  
E. Heiska ◽  
T. Tuhkanen
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Activated Carbon ◽  
Natural Organic Matter ◽  
Organic Matter Removal ◽  
Carbon Filtration

Cost-effective water treatment of polluted surface water by using direct filtration and granular activated carbon filtration

2002 ◽  
Vol 2 (1) ◽  
pp. 233-240 ◽  
Author(s):  
J. Cromphout ◽  
W. Rougge
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Process ◽  
Treatment Plant ◽  
Granular Activated Carbon ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Direct Filtration ◽  
Carbon Filtration ◽  
Effective Water

In Harelbeke a Water Treatment Plant with a capacity of 15,000 m3/day, using Schelde river water has been in operation since April 1995. The treatment process comprises nitrification, dephosphatation by direct filtration, storage into a reservoir, direct filtration, granular activated carbon filtration and disinfection. The design of the three-layer direct filters was based on pilot experiments. The performance of the plant during the five years of operation is discussed. It was found that the removal of atrazin by activated carbon depends on the water temperature.

scholarly journals Effects of ozonation and temperature on biodegradation of natural organic matter in biological granular activated carbon filters

2010 ◽  
Vol 3 (1) ◽  
pp. 107-132 ◽  
Author(s):  
L. T. J. van der Aa ◽  
L. C. Rietveld ◽  
J. C. van Dijk
Keyword(s):  
Carbon Dioxide ◽  
Organic Matter ◽  
Activated Carbon ◽  
Organic Carbon ◽  
Natural Organic Matter ◽  
Granular Activated Carbon ◽  
Carbon Dioxide Production ◽  
Oxygen Removal ◽  
Theoretical Maximum ◽  
Increasing Temperature

Abstract. Four pilot (biological) granular activated carbon ((B)GAC) filters were operated to quantify the effects of ozonation and water temperature on the biodegradation of natural organic matter (NOM) in (B)GAC filters. Removal of dissolved organic carbon (DOC), assimilable organic carbon (AOC) and oxygen and the production of carbon dioxide were taken as indicators for NOM biodegradation. Ozonation stimulated DOC and AOC removal in the BGAC filters, but had no significant effect on oxygen removal and carbon dioxide production. The temperature had no significant effect on DOC and AOC removal, while oxygen removal and carbon dioxide production increased with increasing temperature. Multivariate linear regression was used to quantify these relations. In summer the ratio between oxygen consumption and DOC removal exceeded the theoretical maximum of 2.5 g O2·g C−1 and the ratio between carbon dioxide production and DOC removal exceeded the theoretical maximum of 3.7 g CO2·g C−1. Bioregeneration of large NOM molecules could explain this excesses and the non-correlation between DOC and AOC removal and oxygen removal and carbon dioxide production. However bioregeneration of large NOM molecules was considered not likely to happen, due to sequestration.

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