A Survey of Parasitic Contamination in Qasr-e-Shirin Raw Wastewater: the Role of a Constructed Wetland in Removing Contamination

Kiomars  Sharafi; Masud  Moradi; Touba  Khosravi; Meghdad  Pirsaheb

Journal of Health Reports and Technology

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A Survey of Parasitic Contamination in Qasr-e-Shirin Raw Wastewater: the Role of a Constructed Wetland in Removing Contamination

Author(s):

Kiomars Sharafi¹,

Masud Moradi¹,

Touba Khosravi¹,

Meghdad Pirsaheb^1,*

1Department of Environmental Health Engineering, School of Public Health, Kermanshah University of Medical Science, Iran

Journal of Health Reports and Technology:Vol. 1, issue 1; e69807

Published online:Dec 08, 2014

Article type:Research Article

Received:Jun 10, 2014

Accepted:Sep 04, 2014

How to Cite:Kiomars SharafiMasud MoradiTouba KhosraviMeghdad PirsahebA Survey of Parasitic Contamination in Qasr-e-Shirin Raw Wastewater: the Role of a Constructed Wetland in Removing Contamination.J Health Rep Technol.1(1):e69807.

Abstract

The use of raw wastewater or effluent from inefficient wastewater treatment plants can result in an outbreak of parasitic diseases in a community. The aim of this study was to measure the parasite contamination of raw wastewater in Qasr-e-Shirin and evaluate the performance of a constructed wetland system in removing this contamination. This descriptive cross-sectional study was conducted over the course of 6 months (24 weeks), with a total of 48 samples selected to be tested. Every week a sample was taken from the raw wastewater of the influent and effluent. To identify parasites on the basis of a modified Bailenger method, parasitic analysis was conducted using a McMaster counting slide. The results showed that the minimum, average, and maximum number of all parasite eggs in the raw wastewater of Qasr-e Shirin was 0.08, 35.85, and 167.8 per liter, respectively. The minimum, average, and maximum number of protozoan cysts was 0, 19.95, and 75 per liter, respectively. In the wetland system of Qasr-e-Shirin, removal levels of protozoan cysts and parasite eggs were found to be 99.7 ± 0.23% and 100%, respectively. Because of parasitic wastewater contamination in Qasr-e-Shirin, outbreaks of parasitic diseases in this city are important issues. On the basis of the results of this study, constructed wetlands are very effective in removing parasitic contaminants. In addition, in term of parasite nematode eggs, the final effluent was consistent with the standards for reusing agriculture irrigation (1≥ number per L).

Keywords

Parasitic contamination

Raw wastewater

Constructed wetland

Qasr-e-Shirin

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