期刊名称：International Journal of Environmental Science and Toxicology Research
电子版ISSN：2408-7262
出版年度：2014
卷号：2
期号：8
页码：152-159
语种：English
出版社：International Invention Journals
摘要：Phosphorous is the main and key nutrient in freshwater systems which is stimulative to algae, aquatic plants and photosynthetic microorganisms’ growth and should be removed to prevent eutrophication phenomenon. In this study efficiency of removal of the COD (Chemical Oxygen Demand) and the TP (Total phosphate) was investigated using a new anaerobic-aerobic/anoxic modified SBR reactor. An anaerobic-aerobic/anoxic modified SBR reactor was used in 4 different operating phases in time range of 3 to 8 hours in order to reach the best COD and TP removal conditions. The input phosphate concentration and input COD were varied from 4 mg/L to 60 mg/L and from 250 mg/L to 1500 mg/L respectively. The phases 3 and 4 were chosen as the best phases with 91.9% and 84.4% in phase 3 for COD and TP removal efficiencies respectively and also 92.7% and 86.9% for COD and TP removal efficiencies in phase 4. The retention time of phase 4 was included alternatively 225 minutes aeration, 165 minutes mixing and 90 minutes sedimentation. This new reactor has several advantages including high efficiency in removal of organic materials and phosphate, continuity in input flow, the low space and volume occupation. Keywords: Modified SBR reactor, phosphate, Anaerobic, Aerobic.
