Microbes in Sewage Treatment
BIOXII10: MICROBES IN HUMAN WELFARE

343957 Secondary treatment of sewage

1 Removes grit and large pieces of organic matter
2 Involves shredding, chuming, filtration and sedimentation
3 Does not require aeration
4 Involves microbial digestion of organic matter
BIOXII10: MICROBES IN HUMAN WELFARE

343958 Which of the following is put into anaerobic sludge digester for further sewage treatment?

1 Floating debris
2 Effluents of primary treatment
3 Activated sludge
4 Primary sludge
BIOXII10: MICROBES IN HUMAN WELFARE

343959 The domestic sewage mixes with river water

1 Small animals like rats will die after drinking river water.
2 The increased microbial activity releases micronutrients such as iron.
3 The decreased microbial activity uses up dissolved oxygen.
4 The increased microbial activity uses up dissolved oxygen
BIOXII10: MICROBES IN HUMAN WELFARE

343960 BOD refers to

1 Botanical oxygen demand
2 Biochemical oxygen demand
3 Bioreductive oxygen demand
4 Biological oxygen demand
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BIOXII10: MICROBES IN HUMAN WELFARE

343957 Secondary treatment of sewage

1 Removes grit and large pieces of organic matter
2 Involves shredding, chuming, filtration and sedimentation
3 Does not require aeration
4 Involves microbial digestion of organic matter
BIOXII10: MICROBES IN HUMAN WELFARE

343958 Which of the following is put into anaerobic sludge digester for further sewage treatment?

1 Floating debris
2 Effluents of primary treatment
3 Activated sludge
4 Primary sludge
BIOXII10: MICROBES IN HUMAN WELFARE

343959 The domestic sewage mixes with river water

1 Small animals like rats will die after drinking river water.
2 The increased microbial activity releases micronutrients such as iron.
3 The decreased microbial activity uses up dissolved oxygen.
4 The increased microbial activity uses up dissolved oxygen
BIOXII10: MICROBES IN HUMAN WELFARE

343960 BOD refers to

1 Botanical oxygen demand
2 Biochemical oxygen demand
3 Bioreductive oxygen demand
4 Biological oxygen demand
BIOXII10: MICROBES IN HUMAN WELFARE

343957 Secondary treatment of sewage

1 Removes grit and large pieces of organic matter
2 Involves shredding, chuming, filtration and sedimentation
3 Does not require aeration
4 Involves microbial digestion of organic matter
BIOXII10: MICROBES IN HUMAN WELFARE

343958 Which of the following is put into anaerobic sludge digester for further sewage treatment?

1 Floating debris
2 Effluents of primary treatment
3 Activated sludge
4 Primary sludge
BIOXII10: MICROBES IN HUMAN WELFARE

343959 The domestic sewage mixes with river water

1 Small animals like rats will die after drinking river water.
2 The increased microbial activity releases micronutrients such as iron.
3 The decreased microbial activity uses up dissolved oxygen.
4 The increased microbial activity uses up dissolved oxygen
BIOXII10: MICROBES IN HUMAN WELFARE

343960 BOD refers to

1 Botanical oxygen demand
2 Biochemical oxygen demand
3 Bioreductive oxygen demand
4 Biological oxygen demand
BIOXII10: MICROBES IN HUMAN WELFARE

343957 Secondary treatment of sewage

1 Removes grit and large pieces of organic matter
2 Involves shredding, chuming, filtration and sedimentation
3 Does not require aeration
4 Involves microbial digestion of organic matter
BIOXII10: MICROBES IN HUMAN WELFARE

343958 Which of the following is put into anaerobic sludge digester for further sewage treatment?

1 Floating debris
2 Effluents of primary treatment
3 Activated sludge
4 Primary sludge
BIOXII10: MICROBES IN HUMAN WELFARE

343959 The domestic sewage mixes with river water

1 Small animals like rats will die after drinking river water.
2 The increased microbial activity releases micronutrients such as iron.
3 The decreased microbial activity uses up dissolved oxygen.
4 The increased microbial activity uses up dissolved oxygen
BIOXII10: MICROBES IN HUMAN WELFARE

343960 BOD refers to

1 Botanical oxygen demand
2 Biochemical oxygen demand
3 Bioreductive oxygen demand
4 Biological oxygen demand