Environmental Biotechnology章节测试课后答案2024春

第五章测试

1.Secondary consumers in the activated sludge system include: ( ).
A:chemolithotrophic bacteria B:heterotrophic bacteria C:prokaryotes D:predators
答案:ACD
2.Which one of the following is the most popular reactor configurations being used in wastewater treatment these days ( ).
A:Step aeration B:Conventional Aeration C:Modified Aeration D:Completely mixed 3.The conventional activated sludge system could remove BOD5 and suspended solids (SS) by ( ) percent or more for municipal sewage treatment.
A:90 B:75 C:80 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:错 B:对 5.In most situations, the electron donor, or the BOD, is rate limiting for microorganism reproduction and growth.（ ）
A:对 B:错