A high BOD value means
A) a large amount of oxygen has been used AND a small amount of degradable organic matter is present.
B) a small amount of oxygen has been used AND a large amount of degradable organic matter is present.
C) a large amount of degradable organic matter is present AND a small number of viruses are present.
D) a small number of viruses are present AND a large amount of oxygen has been used.
E) a large amount of oxygen has been used AND a large amount of degradable organic matter is present.
Correct Answer:
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Q15: Water treatment processes for drinking water
A) are
Q16: The term "potable water" refers to water
Q17: In sewage treatment, the removal of large
Q18: Vibrio cholerae is most often associated with
A)
Q19: Advanced treatment of sewage
A) is done to
Q21: Trickling filters may be used in place
Q22: Other microorganisms besides coliforms that have been
Q23: Coliforms are
A) lactose-fermenting.
B) Gram-positive.
C) coccus-shaped.
D) spore-forming.
E) All
Q24: The compost pile temperature at which pathogens,
Q25: High BOD values reflect small amounts of
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