Investigating the Effect of Vermifiltration with Different Bulking Agents on Some Important Properties of Municipal Sewage Influent
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 169
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شناسه ملی سند علمی:
JR_JAEHR-10-1_008
تاریخ نمایه سازی: 8 تیر 1401
چکیده مقاله:
Background: Farmers have been persuaded to use wastewater in agriculture due to drought and water deficiency. However, an important challenge is the environmental constraints.Methods: This study investigated the effect of vermifiltration on the properties of sewage influent. The sewage influent was obtained from the aerated lagoons of the Qahdarijan wastewater treatment plant, Isfahan Province, Iran. The sewage was mixed with Rice Husk (RH) and Wheat Straw (WS) as the bulking agents at three proportions (۰%, ۵%, and ۱۰%v/v). Then, EarthWorm (EW) (Eisenia fetida) were added to the sewage sludge in two proportions (۰ and ۵۰ adult earthworms/۶ kg sewage sludge).Results: The results showed a significant decrease in electrical conductivity (about ۱۰۰% decrease compared to the control), total dissolved solids (up to ۳ times in RH۰+ EW treatment less than the control), total suspended solids (up to ۹۰ times in WS۱۰+EW and RH+EW treatments decrease compared to the control), biochemical oxygen demand (significant decrease in RH levels+EW compared to other treatments), and chemical oxygen demand (a reverse status was observed for WS and RH treatments, but the role of vermifiltration was considerable). The concentration of Pb was significantly decreased in WS when it was enriched with earthworms (about an ۸% decrease compared to control), but a reverse status was observed for RS treatment.Conclusion: Vermifiltration may be an efficient tool for improving the properties of wastewater to use in agriculture, but more studies are suggested to evaluate different aspects of this technique.
کلیدواژه ها:
نویسندگان
Abdol Rasoul Jafarzadeh Ghahdarijani
Department of Soil Science, Faculty of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Mehran Hoodaji
Department of Soil Science, Faculty of Agriculture, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
Arezoo Tahmourespour
Department of Basic Medical Sciences, Faculty of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
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