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مقالات فارسیISIکنفرانسهاژورنالها

Inactivation of Coliforms in Sludge Through Cavitation Phenomena by Ultrasonic Waves

محل انتشار: مجله پیشرفت در تحقیقات بهداشت محیط، دوره: 11، شماره: 2
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 149

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لینک ثابت به این مقاله:
https://civilica.com/doc/1747218

شناسه ملی سند علمی:

JR_JAEHR-11-2_003

تاریخ نمایه سازی: 11 شهریور 1402

چکیده مقاله:

Background: One of the most challenging and critical processes in wastewater treatment is sludge treatment. This study aimed to investigate the effects of low frequency ultrasound and high level of energy on inactivation rate of total coliform of sludge and ascertain the optimal operating parameters of the ultrasound waves.Methods: In this research, the density of ultrasound (W/mL) and time (minutes) were investigated. The effect of these parameters on the inactivation of total coliform in sludge was also investigated.Results: The results revealed that the optimum operating time and ultrasound density were ۳۰ minutes and ۲.۵ W/mL, respectively. Also, the frequency of ۲۰ kHz of total coliform removal rate in these conditions was ۹۹.۴۴% .Conclusion: Ultrasound waves as well as micro and nano bubbles could remove total coliform and decontaminate the sludge, thereby incrementing the rate of treatment.

کلیدواژه ها:

Cavitation ، Nano-Bubbles ، Sludge ، Total Coliform ، Ultrasound Density

نویسندگان

Farshad Golbabaei Kootenaei

Department of Environmental Engineering, Faculty of Environment, College of Engineering, University of Tehran, Tehran, Iran

Nasser Mehrdadi

Department of Environmental Engineering, Faculty of Environment, College of Engineering, University of Tehran, Tehran, Iran

Gholamreza Nabi Bidhendi

Department of Environmental Engineering, Faculty of Environment, College of Engineering, University of Tehran, Tehran, Iran

Hasan Aminirad

Department of Environmental Engineering, Faculty of Civil Engineering, Babol (Noshirvani) University of Technology, Babol, Iran

Mohammad Amin Mirrezaei

Department of Environmental Engineering, Faculty of Environment, College of Engineering, University of Tehran, Tehran, Iran

Farimah Saeidi

Department of Environmental Engineering, Faculty of Environment, College of Engineering, University of Tehran, Tehran, Iran

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