Effects of temperature and hydraulic retention time on the performances of an anaerobic baffled reactor treating low strength wastewater

Title
Effects of temperature and hydraulic retention time on the performances of an anaerobic baffled reactor treating low strength wastewater
Authors
이상화
Keywords
effectsoftemperatureandhydraulicretentiontimeontheperformancesofananaerobicbaffledreactortreatinglowstrengthwastewater
Issue Date
2012
Publisher
인하대학교
Abstract
Effects of hydraulic retention time (HRT) and temperature on the performances of anaerobic baffled reactor (ABR) treating low strength wastewater were evaluated with synthetic wastewater containing equal COD mixture of acetate and propionate. At the organic loading rate (OLR) of 2 kg COD/m³-d and 25 ℃, TCOD removal decreased slightly from 97 to 93 % as HRT decreased from 24 to 3 hr, although effluent VFA was lower than 1 mg COD/L. TCOD removal under the same HRT of 3 hr decreased gradually from 93 to 83 % as temperature decreased from 25 to 15 ℃, and then decreased abruptly to 53 % at 10 oC. At 10 ℃, COD removal increased from 53 to 80 % as HRT increased from 3 to 9 hr. Even at 5 ℃, COD removal was 76 % at HRT of 24 hr. The result indicated that anaerobic treatment of low-strength wastewater is possible even at low temperature if long HRT is provided.
Description
1. Introduction 1 2. Review on Anaerobic Baffled Reactor 3 2.1 Development of ABR reactor 3 2.2 Advantages and disadvantages of ABR 5 2.3. Previous studies with ABR 6 3. Materials and Methods 11 3.1. Anaerobic baffled reactor 11 3.2 Operating conditions 13 3.3 Analytical methods 15 4. Results and Discussion 16 4.1 Performance of ABR at various HRTs under the fixed OLR 16 4.1.1 Water quality 16 4.1.2 Gas production and composition 20 4.2 Performance of ABR at low temperatures 22 4.2.1 Water quality 22 4.2.2 Gas production and composition 30 5. Conclusions 33 References 34
URI
http://dspace.inha.ac.kr/handle/10505/23718
Appears in Collections:
College of Engineering(공과대학) > Environmental Engineering (환경공학) > Theses(환경공학 석박사 학위논문)
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