AWWA MTC69694

The performance of the reverse osmosis (RO) membrane when reclaiming high fouling produced water atan elevated pH and temperature is distinctive from more common municipalwastewaters. This unique process offers an opportunity to better understand ROmembrane salt passage and durability, as well as RO element and system design, atmore extreme conditions. This paper discusses the characteristics ofthe RO membrane in a system reclaiming high pH/high temperature produced waterfrom the oil and gas extraction process. This characterization is based onlaboratory studies, pilot studies, and actual plant performance.In addition to understanding salt passage when treating high pH water, a betterunderstanding of membrane longevity is necessary considering the high pH and hightemperature operation associated with this process. Operation at high pH can mitigateorganic fouling of the RO and act as a kind of continuous cleaning, but exposure tohigh pH can also adversely affect the integrity of the membrane's polyester support. Ananalysis of flow, salt passage, and strength was performed to characterize the effects oflong term exposure of the membrane to these extreme conditions. Includes 6 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2009

Number of Pages:

16

File Size:

1 file , 780 KB