Title of article :
Modified Sequencing Batch Airlift Reactor Capability in MTBE Removal
Author/Authors :
Ayati, B Civil & Environmental Engineering Faculty - Tarbiat Modares University, Tehran , Rezaei, M Civil & Environmental Engineering Faculty - Tarbiat Modares University, Tehran
Abstract :
The aim of this study was to investigate MTBE removal efficiency using sequencing batch airlift reactor (SBAR) and to determine the share of aeration and adsorption processes during the operation. The present study was conducted with a new design of the system (cubic area and embedded baffle). The reactor was applied in 4-h cycles, which included 2 min filling, 210 min aeration, 5 min sedimentation, 8 min draw, and 15 min idle time. One week after start-up, the initial brown granules were observed. During the operation, some granules were formed with the size of 2–6 mm, average settling velocity and density of 0.66 cm/s and 0.06 g/mL, respectively. The results showed that COD removal efficiency was over 94 percent.
Farsi abstract :
هدف از اين تحقيق، بررسي راندمان حذف متيل ترشياري بوتيل اتر با استفاده از سيستم SBAR بود كه توسط يك سيستم بافلدار مكعبي با طراحي جديد انجام شد. راكتور در سيكل هاي 4 ساعته شامل 2 دقيقه خوراك دهي، 210 دقيقه هوادهي، 5 دقيقه ته نشيني، 8 دقيقه تخليه و 15 دقيقه سكون به كار گرفته شد. يك هفته بعد از راه اندازي، گرانولهاي اوليه به رنگ قهوه اي مشاهده شدند. طي دوره، گرانولهائي با قطر 6-2 ميلي متر، سرعت ته نشيني و دانسيته به ترتيب 0٫66 سانتي متر بر ثانيه و 0/06 گرم بر ميلي ليتر تشكيل شدند. طبق نتايج، راندمان حذف بيش از 94 درصد COD حاصل شد.
Keywords :
Aerobic bio-granule , COD , Diametere , Density , MTBE
Journal title :
Astroparticle Physics
