Performance evaluation of a locally developed domestic drinking water filter

2010 ◽  
Vol 67 (5) ◽  
pp. 763-771 ◽  
Author(s):  
B.O. Bolaji ◽  
G.A. Bolaji ◽  
S.O. Ismaila
Keyword(s):  
Drinking Water ◽  
Performance Evaluation ◽  
Water Filter

A performance evaluation and modification of the UNICEF upward-flow water filter

Waterlines ◽  
1993 ◽  
Vol 12 (2) ◽  
pp. 29-31 ◽  
Author(s):  
Vinay Pratap Singh ◽  
Malay Chaudhuri
Keyword(s):  
Performance Evaluation ◽  
Upward Flow ◽  
Water Filter ◽  
A Performance

Asbestos in Drinking Water Performance Evaluation Studies

2009 ◽  
pp. 273-273-15
Author(s):  
Gary B. Collins ◽  
Paul W. Britton ◽  
Patrick J. Clark ◽  
Kim A. Brackett ◽  
Eric J. Chatfield
Keyword(s):  
Drinking Water ◽  
Performance Evaluation ◽  
Evaluation Studies

Nutrient removal in subsurface flow constructed wetlands for application in sensitive regions

2001 ◽  
Vol 44 (11-12) ◽  
pp. 149-155 ◽  
Author(s):  
H. Rustige ◽  
Chr. Platzer
Keyword(s):  
Drinking Water ◽  
High Performance ◽  
Treatment Plant ◽  
Filter Medium ◽  
Water Filter ◽  
Multi Stage ◽  
Reed Bed ◽  
One Year ◽  
Performance Rate ◽  
Filter Bed

One of the most interesting sites for research on CWs in Germany has been established in Wiedersberg (Saxonia). The multi-stage concept with primary settling, vertical and horizontal flow reed bed followed by UV-disinfection and a special phosphorus filter bed, allows numerous ways of operation and investigations. Denitrification can be improved by recirculation through VF bed and sedimentation tank or by means of adding carbonaceous water from the primary stage to a second level within the VFB or directly to the following HF bed. In order to investigate the efficiency of P-elimination four kinds of natural sands containing different amounts of iron have been used. To maintain a long-term capacity for P-reduction an additional filter bed is filled with gravelly sand which had been used for the precipitation of iron from drinking water before. After saturating with P this filter medium can be exchanged easily. A result of more than one year of operation is the high performance rate for adsorption of phosphorus by enriched iron on drinking water filter sand. At a total loading rate of 350 g P/m3 filter medium 250 g P/m3 have been adsorbed. Design considerations can not be given yet. The median denitrification rate at VFB is 1.3 g N m-2d-1 and at HFB is 0.25 g Nm-2d-1. The low denitrifcation rate of HFB might be due to a very high quota of wastewater dilution by storm- and ground-water of 100 to 200 percent. The investigations on this wastewater treatment plant will be continued until June 2001 and experiments with filter columns will be added.

Evaluation of an integrated membrane system for water repurification

2001 ◽  
Vol 43 (10) ◽  
pp. 219-224 ◽  
Author(s):  
P. Gagliardo ◽  
S. Adham ◽  
A. Olivieri ◽  
R. Trussell
Keyword(s):  
Drinking Water ◽  
Performance Evaluation ◽  
Membrane Fouling ◽  
Reclaimed Water ◽  
Membrane System ◽  
Drinking Water Standards ◽  
Wide Range ◽  
Membrane Type

An integrated membrane system was evaluated for water repurification. Performance evaluation of the membrane system was based on three criteria: flux and fouling, disinfection capability, and rejection of pollutants. Minimal membrane fouling was observed for all of the membranes employed in the study. Significant contaminant rejection was also achieved by the membrane system purifying the reclaimed water to meet and exceed drinking water standards. Wide range of virus rejection was observed for the membranes, which was dependent on the membrane type, manufacturer, and the fouling status. Overall, the results of this study demonstrated that the integrated membrane system is a very effective and reliable process for water repurification.

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