Removal of Microorganisms from Domestic Greywater Using a Recycling Vertical Flow Constructed Wetland (RVFCW)

$17.50 plus tax (Refund Policy)

Buy Article:


The reuse of greywater (GW) is an attractive addition to water management options. One of the major concerns limiting GW reuse is the possible presence of harmful microorganisms. In addition to total coliform organisms, enteric organisms (Salmonella, Shigella and poliovirus Type 1 Cryptosporidium, Giardia) and opportunistic pathogens ( Staphylococcus aureus and Pseudomonas aeruginosa) may be present in GW. Recently, researchers at Ben Gurion University have developed a new small-scale, decentralized greywater treatment system, the Recycling Vertical Flow Constructed Wetland. The population dynamics of E. coli, Staph. aureus and Ps. aeruginosa in three different synthetic GWs formulated to reflect the variable composition of domestic GW were examined in this treatment system. E. coli, Staph. aureus, and Ps. spp. were present in samples from all of the systems at the beginning of each treatment cycle. Control studies indicated that the concentration of E. coli changed by less than 2% in untreated samples of GW over 3 days. In the RVFCW, E. coli was reduced to concentrations below detection (<1 CFU (100ml)−1 ) at the end of the treatment cycle. (2–3 d) and therefore, consistently resulted in E. coli levels that meet the USEPA standards for water reuse (USEPA, 2004) Removal of Staph aureus varied depending on the formulation of GW while there was no significant change in the number of Ps. spp. in any of the GW formulations. Thus, both of these opportunistic pathogens could be found in treated effluent in the absence of E. coli. These results underscore the need for extensive microbiological monitoring of greywater systems as well as the need for the development of greywater specific standards.

Document Type: Research Article


Publication date: January 1, 2006

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 These proceedings are not peer reviewed.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
  • ingentaconnect is not responsible for the content or availability of external websites



Share Content

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
Cookie Policy
ingentaconnect 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