IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v15y2018i7p1369-d155237.html
   My bibliography  Save this article

Continuous Flow-Constructed Wetlands for the Treatment of Swine Waste Water

Author

Listed:
  • Abasiofiok M. Ibekwe

    (USDA-ARS, U.S. Salinity Laboratory, 450 W. Big Springs Rd, Riverside, CA 92507, USA)

  • Shelton E. Murinda

    (Department of Animal and Veterinary Sciences, California State Polytechnic University, Pomona, CA 91768, USA)

Abstract

The microbiological quality of treated waste water is always a concern when waste water is disposed to the environment. However, when treated appropriately, such water can serve many purposes to the general population. Therefore, the treatment and removal of contaminants from swine waste water by continuous flow-constructed wetlands involves complex biological, physical, and chemical processes that may produce better quality water with reduced levels of contaminants. Swine waste contains E. coli populations and other bacterial contaminants originating from swine houses through constructed wetlands, but little is known about E. coli population in swine waste water. To assess the impacts of seasonal variations and the effect of the wetland layout/operations on water quality, E. coli isolates were compared for genetic diversity using repetitive extragenic palindromic polymerase chain reaction (REP-PCR). None of the isolates was confirmed as Shiga toxin producing E. coli O157:H7 (STEC); however, other pathotypes, such as enterotoxigenic E. coli (ETEC) were identified. Using a 90% similarity index from REP-PCR, 69 genotypes out of 421 E. coli isolates were found. Our data showed that the E. coli population was significantly ( p = 0.036) higher in November than in March and August in most of the wetland cells. Furthermore, there was a significant ( p = 0.001) reduction in E. coli populations from wetland influent to the final effluent. Therefore, the use of continuous flow-constructed wetlands may be a good treatment approach for reducing contaminants from different waste water sources.

Suggested Citation

  • Abasiofiok M. Ibekwe & Shelton E. Murinda, 2018. "Continuous Flow-Constructed Wetlands for the Treatment of Swine Waste Water," IJERPH, MDPI, vol. 15(7), pages 1-14, June.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:7:p:1369-:d:155237
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/15/7/1369/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/15/7/1369/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Xiaofeng Huang & Yi Luo & Zuolan Liu & Changlian Zhang & Hang Zhong & Jiajia Xue & Qigui Wang & Zhiping Zhu & Chao Wang, 2019. "Influence of Two-Stage Combinations of Constructed Wetlands on the Removal of Antibiotics, Antibiotic Resistance Genes and Nutrients from Goose Wastewater," IJERPH, MDPI, vol. 16(20), pages 1-11, October.
    2. Sofia Dias & Ana P. Mucha & Rute Duarte Crespo & Pedro Rodrigues & C. Marisa R. Almeida, 2020. "Livestock Wastewater Treatment in Constructed Wetlands for Agriculture Reuse," IJERPH, MDPI, vol. 17(22), pages 1-21, November.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:15:y:2018:i:7:p:1369-:d:155237. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.