Membrane fouling in reverse-osmosis filters during real drinking water purification: Impact of operation modes and pretreatment

2019 ◽  
Vol 159 ◽  
pp. 214-223
Author(s):  
Bifeng Zhang ◽  
Yijuan Jiang ◽  
Fang Fang ◽  
Kaisong Zhang
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
Water Purification ◽  
Membrane Fouling ◽  
Operation Modes ◽  
Drinking Water Purification

scholarly journals Membrane Fouling and Performance of Flat Ceramic Membranes in the Application of Drinking Water Purification

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2606 ◽  
Author(s):  
Shujuan Meng ◽  
Minmin Zhang ◽  
Meng Yao ◽  
Zhuguo Qiu ◽  
Yubin Hong ◽  
...  
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Water Purification ◽  
Membrane Fouling ◽  
Membrane Surface ◽  
Water Flux ◽  
Ceramic Membranes ◽  
Surface Water Treatment ◽  
Drinking Water Purification

Membrane technologies have been widely applied in surface water treatment for drinking water purification. The main obstacles to the large scale application of membranes include membrane fouling, energy consumption and high investment. This study systematically investigated the performance of a hybrid system including in-situ coagulation and membrane module. The key parameters of a membrane system, including initial flux, operation mode (intermediate or continuous, time intervals, backwashing and aeration) was comprehensively investigated. In addition, the treatment performance in terms of turbidity, organic matter removal, membrane fouling and cleaning, and the effect of coagulants, were also studied. It was found that flat ceramic membranes with in-situ coagulation for surface water treatment performed much better without aeration and frequent backwashing, which gave interesting and important implications for future applications of a flat ceramic membrane, especially in drinking water purification. The hybrid system can achieve a high-water flux of 150 L/m2·h (LMH) for 8 h operation without aeration and backwash. The removal of turbidity, UV254 and COD can achieve 99%, 85% and 81%, respectively. The cake layer on the membrane surface formed from the coagulation flocs turned out to prevent the membrane to be exposed to organic pollutant immediately which minimized the fouling problem. In addition, the fouling layer on the membrane surface can be easily cleaned by air scouring and backwash at the end of experiments, with a water flux recovery of higher than 90%. These results in this study provided an alternative strategy for membrane fouling control and energy conservation.

scholarly journals Fate of Sulfate in the Course of Japanese Drinking Water Purification Plants −Implications for Dialysis Therapy−

2020 ◽  
Vol 18 (1) ◽  
pp. 54-61
Author(s):  
Dai Simazaki ◽  
Kousei Futami ◽  
Kodai Ichimaru ◽  
Taiki Kumagai ◽  
Susumu Konuma ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Dialysis Therapy ◽  
Drinking Water Purification

A study of the parameters affecting the effectiveness of Moringa oleifera in drinking water purification

2010 ◽  
Vol 35 (13-14) ◽  
pp. 791-797 ◽  
Author(s):  
M. Pritchard ◽  
T. Craven ◽  
T. Mkandawire ◽  
A.S. Edmondson ◽  
J.G. O’Neill
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Moringa Oleifera ◽  
Drinking Water Purification
Sign in / Sign up

Export Citation Format

Share Document