title

ارزیابی کمی ریسک میکروبی تخم آسکاریس و کیست ژیاردیا در پساب تصفیه خانه فاضلاب استفاده شده برای آبیاری کشاورزی: مطالعه موردی

شرفی, کیومرث and پیرصاحب, مقداد and داودی, رضا and غفاری, حمیدرضا and فضل زاده دویل, مهدی and کریمایی, مصطفی and میری, محمد and دیندارلو, کاووس and آذری, علی and ارفعی نیا, حسین (1396) ارزیابی کمی ریسک میکروبی تخم آسکاریس و کیست ژیاردیا در پساب تصفیه خانه فاضلاب استفاده شده برای آبیاری کشاورزی: مطالعه موردی. Desalination and Water Treatment ــ 80 . pp. 142-148. شاپا 1944-3994

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Official URL: http://www.deswater.com/DWT_abstracts/vol_80/80_20...


Title

Quantitative microbial risk assessment of Giardia cyst and Ascaris egg in effluent of wastewater treatment plants used for agriculture irrigation - a case study

English Abstract

The aim of this study was to determine the concentration of Giardia cyst and Ascaris egg in influent and effluent of six wastewater treatment plants (WWTPs) in Kermanshah province, Iran, and to assess human health risk imposed by these organisms. Samples were taken from influent and effluent at weekly interval during 6 months. Samples were analyzed for Giardia cyst and Ascaris egg using McMaster egg counting technique according to Bailenger method. The Monte Carlo simulation method was used to calculate daily and annual infection risks. The efficiencies of all WWTPs to remove Giardia cyst and Ascaris egg from raw wastewater were more than 95%. However, maximum concentrations of these organisms were higher than acceptable level in some WWTPs effluents. Maximum concentration of Giardia cyst (2 counts/L) and Ascaris egg (4 counts/L) in effluent were observed in Kermanshah WWTP. The results of risk assessment indicated that annual infection risk related to both organisms were much more than acceptable level (10–4 pppy). Also, the imposed risk by Ascaris was higher than Giardia. There is a need for more precautions to be considered by farmers and other susceptible groups in contact to reclaimed wastewater in agricultural land, landscape and parks. Also, responsible organization should conduct more vigorous safety plans in site where WWTPs effluent is used for irrigation.

Item Type:Article
زبان سند : انگلیسی
نویسنده اول :کیومرث شرفی
نویسنده مسئول :حمیدرضا غفاری
نویسنده :مهدی فضل زاده دویل
Additional Information:Impact factor (2016) 1.631 Indexed in:ISI, Scopus, Chemical Abstracts, Google Scholar
کلیدواژه ها (انگلیسی):Risk assessment; Giardia cyst; Ascaris egg; Wastewater treatment plants; Agriculture irrigation
Subjects:WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions:Faculty of Health > Department of Environmental health
ID Code:9177
Deposited By: MR Mahdi Fazlzadeh
Deposited On:11 Jul 1396 04:54
Last Modified:10 Apr 1398 10:39

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