Skip to main content

Rejection Capabilities of RO Membranes to DHS Notification-level Chemicals and Selected Endocrine-disrupting Chemicals

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial

Abstract:

The information regarding rejection capabilities of RO to non-regulated compounds such as "DHS notification level chemicals" and endocrine-disrupting chemicals (EDCs) is very limited. In this study, a pilot scale MF (providing pretreatment for RO) and a two-stage RO process receiving secondary treated wastewater effluent from Big Bear Area Regional Water Agency (BBARWA) WWTP was tested to determine the rejection capabilities of the RO membranes for specific non-regulated compounds and CDHS specified endocrine disrupter chemicals (EDCs). Due to limitations in analytical methods, the following EDCs have been tested: Acetaminophen, bisphenol A, caffeine, 17b-estradiol, EDTA, fluoxetine, gemfibrozil, ibuprofen, iopromide, 4-methyl phenol, polybrominated diphenyl ethers, progestrone, testosterone, triclosan and sulfamethoxale. Due to domestic nature of BBARWA wastewater and the degree of secondary treatment (extended aeration) provided, with the exception of boron and chlorate, all DHS notification (action) level compounds were below their detection limits in RO feed water. For the detected compounds, the RO exhibited 93.7 percent rejection capability to chlorate while rejecting boron only 44 percent. EDC testing results have shown that with the exception of 4-methyl phenol, the RO exhibited very good rejection capabilities to the tested EDCs. In this study a very good correlation between RO rejection and molecular size, polarity (charge) and solubility of the compounds.

Keywords: DHS; Endocrine Disrupting Chemicals; Rejection; Reverse Osmosis

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864707786542634

Publication date: July 29, 2007

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites
wef/wefproc/2007/00002007/00000006/art00005
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more