Which of the following involves the removal of phosphorous and nitrogen from sewage?
A) tertiary sewage treatment
B) primary sewage treatment
C) secondary sewage treatment
D) activated sludge sewage treatment
Correct Answer:
Verified
Q16: Which of the following is NOT a
Q17: Water enters the atmosphere because of
A)plants releasing
Q18: What is biochemical oxygen demand?
A)amount of oxygen
Q19: Eutrophication occurs when
A)nutrient increase causes excessive aquatic
Q20: The amount of oxygen required to decompose
Q22: Which of the following best matches the
Q23: What percent of sewage is treated in
Q24: What two land uses result in substantial
Q25: Which of the following best matches the
Q26: The upper surface of an unconfined aquifer
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