کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5480597 1522103 2017 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimization of ultrasonic waves application in municipal wastewater sludge treatment using response surface method
ترجمه فارسی عنوان
بهینه سازی استفاده از امواج اولتراسونیک در درمان لجن فاضلاب شهری با استفاده از روش سطح پاسخ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Today, many limitations are faced in sludge treatment and disposal. Therefore evaluation of different approaches to reduce sludge production in the activated sludge process has attracted great attention. Application of ultrasonic waves in sludge treatment caused to reduce sludge volume and accelerate sludge digestion. This research intended to study the efficiency of ultrasound in dewatering biological sludge in wastewater treatment plants under different conditions. In this study, response surface method was used to investigate results and optimum conditions were determined. Sludge was treated in different conditions as follows: 330-920 W ultrasound power, 1.5-3.9 L sample volume and 6-20 min ultrasonic exposure duration. Then, the effect of waves was studied in terms of SRF (specific resistance to filtration). Results of the experiments showed that, the ultrasonic method significantly increases the SRF. Also based on response surface method, the best performance of ultrasonic application in sludge treatment is achievable at the following conditions: 625 W ultrasound power, 2.7 L sample volume and 13 min ultrasonic exposure duration. A mathematical model for accurate prediction of SRF changes of the sludge was derived using statistical data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 150, 1 May 2017, Pages 361-370
نویسندگان
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