Journal of Environmental Health and Sustainable Development
مجله بهداشت محیط و توسعه پایدار
J Environ Health Sustain Dev
Medical Sciences
http://jehsd.ssu.ac.ir
1
admin
2476-6267
2476-7433
en
jalali
1401
12
1
gregorian
2023
3
1
8
1
online
1
fulltext
en
Quantitative Microbial Risk Assessment of Urban Wastewater Pertaining to Irrigation of Agricultural Products in Qom, Iran, in 2020
Environmental microbiology
Original articles
<pre style="text-align:justify">
<span style="font-family:Times New Roman;"><span style="font-size:10pt"><span style="line-height:115%"><b><i><span lang="EN" new="" roman="" times="">Introduction:</span></i></b><b> </b><span lang="EN" new="" roman="" times="">The present study aims to evaluate adverse health effects caused by the use of wastewater for the irrigation of fields in Qom province, Iran. </span></span></span></span></pre>
<pre style="text-align:justify">
<span style="font-family:Times New Roman;"><span style="font-size:10pt"><span style="line-height:115%"><b><i><span lang="EN" new="" roman="" times="">Materials and Methods:</span></i></b><b> </b><span new="" roman="" times=""><span style="color:#222222">A</span></span><span lang="EN" new="" roman="" times=""><span style="color:#222222">n environmental monitoring program</span></span> <span lang="EN" new="" roman="" times=""><span style="color:#222222">was designed for 3 pathogens-<i>Escherichia coli</i>, <i>Vibrio cholerae</i>, and <i>E. coli</i> O157 and carried out on 120 samples </span></span><span lang="EN" new="" roman="" times="">from raw wastewater, effluent, and irrigated products with wastewater. In the next phase, exposure assessment and microbial risk assessment were performed using a questionnaire and interviewing 200 participants.</span><b> </b></span></span></span><span style="font-size:10pt"><span style="line-height:115%"><span style="font-family:Consolas"><b><span lang="EN" style="font-family:"Times New Roman","serif""></span></b></span></span></span></pre>
<pre style="text-align:justify">
<span style="font-family:Times New Roman;"><span style="font-size:10pt"><span style="line-height:115%"><b><i><span lang="EN" new="" roman="" times="">Results:</span></i></b><b> </b><span lang="EN" new="" roman="" times="">Concentrations of <i>E. coli</i>, <i>V. Cholerae</i>, and <i>E. coli</i> O157:H7</span><span new="" roman="" times=""> in raw wastewater </span><span lang="EN" new="" roman="" times="">were determined to be 3.4 × 10<sup>3</sup> ± 500 cfu/100ml, 2.1 × 10<sup>3</sup> ± 100 cfu/100ml, and 312 cfu/100ml, respectively. Concentrations of <i>E. coli</i>, <i>V. Cholerae</i>, and <i>E. coli</i> O157:H7</span> <span lang="EN" new="" roman="" times="">in effluent were determined to be 2.1 × 10<sup>3</sup> ± 100 cfu/100ml, 0.8 × 10<sup>3</sup> ± 100 cfu/100ml, and 176 cfu/100ml, respectively. The conventional wastewater treatment system was effective in removing <i>E. coli</i>, <i>V. Cholerae</i>, and <i>E. coli</i> O157: H7 by 50%, 59%, and 43%, respectively. Crops irrigated with effluent contained 400 ± 250 cfu/100ml, 0.1 × 10<sup>3</sup> ± 0.019 cfu/100ml, and 52 cfu/100ml of <i>E. coli</i>, <i>V. Cholerae</i>, and <i>E. coli</i> O157:H7, respectively. According to the exposure scenarios, the total annual probability of infection in the studied population for <i>E. coli</i>, <i>V. Cholerae</i>, and <i>E. coli</i> O157:H7</span> <span lang="EN" new="" roman="" times="">was determined to be 8 × 10<sup>-2</sup>, 8 × 10<sup>-4</sup>, and 17 × 10<sup>-2</sup>, respectively. </span></span></span></span><span style="font-size:10pt"><span style="line-height:115%"><span style="font-family:Consolas"><b><span lang="EN" style="font-family:"Times New Roman","serif""></span></b></span></span></span></pre>
<pre style="text-align:justify">
<span style="font-family:Times New Roman;"><b><i><span lang="EN" style="font-size:11.0pt"><span style="line-height:107%"><span new="" roman="" times="">Conclusions:</span></span></span></i> </b><span lang="EN" style="font-size:11.0pt"><span style="line-height:107%"><span new="" roman="" times="">In irrigating agricultural crops with wastewater</span></span></span> <span lang="EN" style="font-size:11.0pt"><span style="line-height:107%"><span new="" roman="" times="">implementing wastewater safety plans (WWSP) is crucial.</span></span></span></span></pre>
Wastewater, Vibrio Cholerae, Escherichia Coli O157, Qom City, Crops, Agricultural.
1867
1877
http://jehsd.ssu.ac.ir/browse.php?a_code=A-10-328-4&slc_lang=en&sid=1
Ahmad Reza
Yari
yari1ahr@gmail.com