04 خرداد 1403
پيوند واله شيدا

پیوند واله شیدا

مرتبه علمی: دانشیار
نشانی: کرمانشاه، دانشگاه صنعتی کرمانشاه-دانشکده مهندسی-گروه مهندسی شیمی
تحصیلات: دکترای تخصصی / مهندسی شیمی
تلفن: 083-38305004 (1166)
دانشکده: دانشکده مهندسی

مشخصات پژوهش

عنوان
Towards a CFD-based analysis of a full-scale sludge tank to enhance dewatering capacity of the downstream filter press
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Computational fluid dynamics Settling velocity Mixer Sludge tank Energy consumption
پژوهشگران الهام میر (نفر اول)، حامد رشیدی (نفر دوم)، پیوند واله شیدا (نفر سوم)

چکیده

A computational fluid dynamics (CFD) model was developed for sludge mixing-settling in a laboratory scale sludge tank based on the Takács exponential function. A dynamic experimental program was also undertaken at different rotational speeds of mixers and the concentration of sludge to validate the sludge sump model. The deviation between the simulated interface height and the experimental data was 2%. The validated CFD model was then employed to develop a novel operating methodology for operation of a full-scale sludge tank. The proposed model includes two consecutive periods of sludge mixing and settling, resulting in reducing the mixers’ working time. In the current operating mode, the energy consumption of mixers has been reduced by 91.67%. Based on the two-phase, 3-D modeling results of the sludge tank, the post-construction sludge tank is simultaneously able to act as a secondary clarifier, as well as a storage tank. As a key finding of the study, the treatment capacity of the filter press in downstream has accelerated, so that the working hours and energy consumption of the filter press has been improved by 55%.