Environmental Biotechnology章节测试课后答案2024春

第八章测试

1.Keeping the organic loading below 2 to 6 kg BODL/(1,000 m2d) makes it possible to maintain a sufficient bulk-liquid DO. ( )
A:错 B:对
答案:B
2.The overall reaction from NO3- to N2 reduce the N by 5 electron equivalents per N. ( )
A:对 B:错 3.Almost all bio-film system work well for de-nitrification, as long as oxygen transfer can be kept to a minimum and plugging does not occur. ( )
A:错 B:对 4.One possible drawback of the UCT process is that the sludge recycle returns NO3- to the anaerobic tank. ( )
A:对 B:错 5.When phosphorus is removed as part of biological treatment, metal salts can be added to the influent wastewater, directly to the aeration basin, or to the mixed liquor before it goes to the settler. ( )
A:对 B:错