کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6486594 | 1416256 | 2018 | 103 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
State of the art of aerobic granulation in continuous flow bioreactors
ترجمه فارسی عنوان
وضعیت هنر گرانول هوازی در بیوراکتورهای جریان مداوم
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کلمات کلیدی
HRSDOLRAOBUASBPAORASsRTSBRNLRTANMGDALRIFASNOBDEMONphosphate-accumulating organismsmillion gallons per dayEPSsCMASHRTTSSWWTPMBRCSTRCFRSVI - ALLF/M - F / MVSs - VSSdissolved oxygen - اکسیژن محلولreturn activated sludge - بازگشت لجن فعالAmmonia oxidizing bacteria - باکتری اکسید کننده آمونیاکNitrite oxidizing bacteria - باکتری های اکسید کننده نیتریتWAS - بودMembrane bioreactor - بیوراکتور غشاییSour - ترشWastewater treatment plant - تصفیه خانه فاضلاب chemical oxygen demand - تقاضای اکسیژن شیمیاییSMP - دانشکده دبیرستانSequential batch reactor - راکتور بتنی متوالیContinuous flow reactor - راکتور جریان مداومAirlift reactor - راکتور هواپیماSolids retention time - زمان نگهداری جامداتhydraulic retention time - زمان هیدرولیکیnitrogen loading rate - سرعت بارگیری نیتروژنSludge volume index - شاخص حجم لجنSelection pressure - فشار انتخابWaste activated sludge - لجن فعال زبالهtotal suspended solids - مجموع مواد جامد معلقSoluble microbial products - محصولات میکروبی قابل حل استVolatile suspended solids - مواد جامد معلق دائمیExtracellular polymeric substances - مواد پلیمری خارج سلولیSpecific oxygen uptake rate - میزان جذب اکسیژن خاصOrganic loading rate - نرخ بارگیری آلیUpflow anaerobic sludge blanket - پتو لجن بی هوازی UpflowProteins - پروتئین هاPolysaccharides - پلیساکاریدهاCod - کادوCANON - کاننtotal ammonia nitrogen - کل نیتروژن آمونیاکAerobic granules - گرانول های هوازی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی
In the wake of the success of aerobic granulation in sequential batch reactors (SBRs) for treating wastewater, attention is beginning to turn to continuous flow applications. This is a necessary step given the advantages of continuous flow treatment processes and the fact that the majority of full-scale wastewater treatment plants across the world are operated with aeration tanks and clarifiers in a continuous flow mode. As in SBRs, applying a selection pressure, based on differences in either settling velocity or the size of the biomass, is essential for successful granulation in continuous flow reactors (CFRs). CFRs employed for aerobic granulation come in multiple configurations, each with their own means of achieving such a selection pressure. Other factors, such as bioaugmentation and hydraulic shear force, also contribute to aerobic granulation to some extent. Besides the formation of aerobic granules, long-term stability of aerobic granules is also a critical issue to be addressed. Inorganic precipitation, special inocula, and various operational optimization strategies have been used to improve granule long-term structural integrity. Accumulated studies reviewed in this work demonstrate that aerobic granulation in CFRs is capable of removing a wide spectrum of contaminants and achieving properties generally comparable to those in SBRs. Despite the notable research progress made toward successful aerobic granulation in lab-scale CFRs, to the best of our knowledge, there are only three full-scale tests of the technique, two being seeded with anammox-supported aerobic granules and the other with conventional aerobic granules; two other process alternatives are currently in development. Application of settling- or size-based selection pressures and feast/famine conditions are especially difficult to implement to these and similar mainstream systems. Future research efforts needs to be focused on the optimization of the granule-to-floc ratio, enhancement of granule activity, improvement of long-term granule stability, and a better understanding of aerobic granulation mechanisms in CFRs, especially in full-scale applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biotechnology Advances - Volume 36, Issue 4, JulyâAugust 2018, Pages 1139-1166
Journal: Biotechnology Advances - Volume 36, Issue 4, JulyâAugust 2018, Pages 1139-1166
نویسندگان
Timothy R. Kent, Charles B. Bott, Zhi-Wu Wang,