Rapid start-up and efficient long-term nitritation of low strength ammonium wastewater with a sequencing batch reactor containing immobilized cells
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چکیده
منابع مشابه
Performance and microbial ecology of a nitritation sequencing batch reactor treating high-strength ammonia wastewater
The partial nitrification (PN) performance and the microbial community variations were evaluated in a sequencing batch reactor (SBR) for 172 days, with the stepwise elevation of ammonium concentration. Free ammonia (FA) and low dissolved oxygen inhibition of nitrite-oxidized bacteria (NOB) were used to achieve nitritation in the SBR. During the 172 days operation, the nitrogen loading rate of t...
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Sequencing batch reactor (SBR) technology has found many applications in industrial wastewater treatment in recent years. The aim of this study was to determine the optimal time for a cycle of the sequencing batch reactor (SBR) and evaluate the performance of a SBR for petrochemical wastewater treatment in that cycle time. The reactor was operated with a suspended biomass configuration under ae...
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از گذشته تا کنون، تحقیقات بسیاری صورت گرفته است که همگی به گونه ای بر مثمر ثمر بودن استفاده از استراتژی های یادگیری لغت در یک زبان بیگانه اذعان داشته اند. این تحقیق به بررسی تاثیر دو روش مختلف آموزش واژگان انگلیسی (کلیدی و بافتی) بر تلفظ و دانش لغوی فراگیران ایرانی زیر متوسط زبان انگلیسی و بر ماندگاری آن در حافظه می پردازد. به این منظور، تعداد شصت نفر از زبان آموزان ایرانی هشت تا چهارده ساله با...
15 صفحه اولTreatment of Low-strength Wastewater Using Immobilized Biomass in a Sequencing Batch External Loop Reactor: Influence of the Medium Superficial Velocity on the Stability and Performance
An anaerobic sequencing batch bioreactor with external circulation of the liquid phase wherein the biomass was immobilized on a polyurethane foam matrix was analyzed, focussing on the influence of the liquid superficial velocity on the reactor’s stability and efficiency. Eight-hour cycles were carried out at 30C treating glucose-based synthetic wastewater around 500 mgDQO/L. The performance of ...
متن کاملEffect of nitrite from nitritation on biological phosphorus removal in a sequencing batch reactor treating domestic wastewater.
Although nitrite effect on enhanced biological phosphorus removal (EBPR) has been previously studied, very limited research has been undertaken about the effect of nitrite accumulation caused by nitritation on EBPR. This paper focused on nitrite effect from nitritation on EBPR in a sequencing batch reactor treating domestic wastewater. Results showed that nitrite of below 10mg/L did not inhibit...
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ژورنال
عنوان ژورنال: Water Science and Technology
سال: 2014
ISSN: 0273-1223,1996-9732
DOI: 10.2166/wst.2014.251