Environmental Biotechnology答案2023秋

第五章测试

1.Secondary consumers in the activated sludge system include: ( ).
A:predators
B:heterotrophic bacteria
C:prokaryotes
D:chemolithotrophic bacteria

答案:ACD
2.Which one of the following is the most popular reactor configurations being used in wastewater treatment these days ( ).
A:Modified Aeration
B:Conventional Aeration
C:Completely mixed
D:Step aeration
3.The conventional activated sludge system could remove BOD5 and suspended solids (SS) by ( ) percent or more for municipal sewage treatment.
A:80
B:75
C:90
D:85
4.For a conventional design for the activated sludge treatment of domestic sewage, the F/M ratio suggested is 0.25 to 0.5 kg BOD5 per day per kg MLSS.（ ）
A:对 B:错 5.In most situations, the electron donor, or the BOD, is rate limiting for microorganism reproduction and growth.（ ）
A:对 B:错