The Effect of Wastewater Irrigation on the Activity of Soil Microorganisms
- سال انتشار: 1400
- محل انتشار: فصلنامه بهداشت محیط و توسعه پایدار، دوره: 6، شماره: 3
- کد COI اختصاصی: JR_JEHSD-6-3_008
- زبان مقاله: انگلیسی
- تعداد مشاهده: 263
نویسندگان
Student Research Committee and Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Environmental Health Engineering, Educational Development Center, Shahrekord University of Medical Sciences, Shahrekord, Iran.
چکیده
Introduction: The use of wastewater for irrigation in arid and semi-arid regions of the world is increasing. This study aimed to evaluate the effects of wastewater on the microbial activity of irrigated soils using the enzymatic activity of soil microorganisms. Materials and Methods: In this study, for soil irrigation, the secondary effluent of the Isfahan municipal wastewater treatment plant was used. As a control, tap water that has no microbial load was also used. Soil samples were collected in two stages, before and immediately after irrigation. All samples were collected in sterile bags, transferred immediately to the laboratory for physicochemical and microbiological tests. Soil samples were analyzed for the amounts of enzymatic activity (Fluorescein Diacetate (FDA) and dehydrogenase), electrical conductivity (EC), oxidation-reduction potential (ORP), and pH. Results: The EC levels before and after irrigation with tap water was ۲۳۱.۲ and ۲۶۰.۶۳ µs.cm-۱, respectively, which was significantly different from levels of wastewater-irrigated soil (P < ۰.۰۵). pH in the two types of used water before and after irrigation was ۶-۸ and ۷-۸, respectively. No significant difference was observed in the levels of FDA, dehydrogenase, ORP, and microbial population in samples irrigated with water and wastewaters (p > ۰.۰۵). It was found that there is a significant relationship between bacterial density and FDA (P < ۰.۰۵). Conclusion: The results of the study showed that irrigation with wastewater has no significant effect on the microbial activity of irrigated soil. Because of the short-term wastewater irrigation in the present study, however, further investigation is needed to evaluate the effect of long-term wastewater irrigation on the microbial and physicochemical quality of soil. < meta http-equiv=Content-Type content="text/html; charset=utf-۸"> < meta name=ProgId content=Word.Document> < meta name=Generator content="Microsoft Word ۱۴"> < meta name=Originator content="Microsoft Word ۱۴"> < meta http-equiv=Content-Type content="text/html; charset=utf-۸"> < meta name=ProgId content=Word.Document> < meta name=Generator content="Microsoft Word ۱۴"> < meta name=Originator content="Microsoft Word ۱۴">کلیدواژه ها
Enzymatic Activity, Fluorescein Diacetate, Microbial Population.اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.