کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6301764 1618024 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intermittent aeration in one-stage partial nitritation/anammox process
ترجمه فارسی عنوان
هوادهی متناوب در مرحله نیتروژن / آناموکس جزئی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
This study investigated the influence of different aeration strategies, characterized by the ratio (R) between non-aerated and aerated phase duration and dissolved oxygen concentration (DO), on one stage partial nitritation/anammox process performance and efficiency treating reject water. The activity of anammox bacteria, ammonium oxidizers, nitrite oxidizers and denitrifiers was determined by measuring specific anammox activity (SAA), oxygen uptake rate (OUR) and nitrate utilization rate (NUR). The results showed that with the same DO level during continuous aeration and intermittent aeration R = 1/3 (in one hour), nitrogen removal efficiencies were similar. This means that introduction of intermittent aeration with R = 1/3 can shorten the duration of aeration without any loss of process efficiency. Around 17-20% of the total decrease in ammonium and nitrate occurred in the non-aerated phase when intermittent aeration with R = 1/3 was applied. Moreover, introduction of non-aerated phases enhanced the activity of anammox bacteria and limited that of nitrite oxidizers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 75, February 2015, Pages 413-420
نویسندگان
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