Daily Question July 18, 2016 (EIA Discussion): 3 Wealth points for replies, plus 5 Wealth points for correct answers (single-choice question)
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29. Regarding the use of biological methods for nitrogen and phosphorus removal from wastewater, which statement is correct? ( ) A. When only phosphorus removal is required, the anoxic/aerobic process should be used. B. When only nitrogen removal is required, the anaerobic/aerobic process should be used. C. When both nitrogen and phosphorus removal are needed simultaneously, the anaerobic/anoxic/aerobic process should be used. D. When both nitrogen and phosphorus removal are needed simultaneously, the anoxic/anaerobic/aerobic process should be used. Answer: C. Explanation: The anaerobic/aerobic process is used for phosphorus removal, the anoxic/aerobic process for nitrogen removal, while the anaerobic/anoxic/aerobic process is used when both processes are required simultaneously
C. When simultaneous nitrogen and phosphorus removal is required, the anaerobic/anoxic/aerobic process should be used
C. When simultaneous nitrogen and phosphorus removal is required, the anaerobic/anoxic/aerobic process should be used
C. When simultaneous nitrogen and phosphorus removal is required, the anaerobic/anoxic/aerobic process should be used
C. When simultaneous nitrogen and phosphorus removal is required, the anaerobic/anoxic/aerobic process should be used
Regarding the use of biological methods for nitrogen and phosphorus removal from wastewater, the correct statement is (C): A. When only phosphorus removal is required, the anoxic/aerobic method should be used. B. When only nitrogen removal is required, the anaerobic/aerobic method should be used. C. When both nitrogen and phosphorus removal are needed simultaneously, the anaerobic/anoxic/aerobic method should be used. D. When both nitrogen and phosphorus removal are needed simultaneously, the anoxic/anaerobic/aerobic method should be used