کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7020053 | 1455947 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Feedback control system for filtration optimisation based on a simple fouling model dynamically applied to membrane bioreactors
ترجمه فارسی عنوان
سیستم کنترل بازخورد برای بهینه سازی تصفیه براساس یک مدل تخریب ساده به طور پویا به بیوراکتورهای غشایی اعمال می شود
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
کنترل پویا فیلتراسیون، طول فیلتر تصحیح نقطه، شار بیش از حد بحرانی، کاهش ریزش مو، فیلتر کردن پایان خاتمه یافته،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
چکیده انگلیسی
Increasing permeate flux whilst maintaining energy demands at reasonable levels is of great interest for membrane bioreactors (MBRs) widespread application. One of the main issues for this is to develop effective fouling control strategies under dynamic conditions. This study proposes a filtration length-based feedback control system for optimal filtration performance. A pilot-scale tertiary MBR was used for the control system validation. The control permitted the adjustment of the permeate flux and the final allowable transmembrane pressure at real-time, in order to obtain the desirable filtration length within a filtration cycle. A flux-step procedure was used to develop the model-based control law. The control system was tested by short-term tests under different initial permeate fluxes (30-60â¯L/h m2), transmembrane pressure increment factors (15-25â¯Pa) and sludge characteristics (1.8-3.5â¯mg/L of biopolymeric clusters), revealing a short transient response and a negligible steady-state error. The potential of this control system was reinforced during long-term operation at unsteady organic load conditions. At pre-fixed filtration time of 5â¯min, continuous operation at supra-critical fluxes (47.1-56.8â¯L/h m2) was maintained at low specific aeration demands (SADpnet=â¯6.1-8.2 Nm3air/m3permeate). The control strategy designed in this study achieved better reversible fouling control than the conventional one (fixed permeate fluxes) which in turn led to a considerable lower residual fouling rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 552, 15 April 2018, Pages 243-252
Journal: Journal of Membrane Science - Volume 552, 15 April 2018, Pages 243-252
نویسندگان
Enrique González, Oliver DÃaz, Luisa Vera, Luis E. RodrÃguez-Gómez, Juan RodrÃguez-Sevilla,