Question
Question: Few steps during secondary treatment in a sewage treatment plant, are given: (1) Effluent is passes...
Few steps during secondary treatment in a sewage treatment plant, are given:
(1) Effluent is passes into…..1….. in which specially …..2….. Microbes grow to large masses termed as….3…. .
(2) Once BOD is significantly…..4….., effluent is transferred to …..5….. .
(3) ….. 3…. Are settled here and are termed as …...6……
(1) 2- Anaerobic, 6-Activated sludge
(2) 1- Anaerobic, sludge digesters, 4-increased
(3) 3- Flocks, 4-Decreased
(4) 1- Primary settling tanks, 5- Large settling tanks
A
2- Anaerobic, 6-Activated sludge
B
1- Anaerobic, sludge digesters, 4-increased
C
3- Flocks, 4-Decreased
D
1- Primary settling tanks, 5- Large settling tanks
Answer
3- Flocks, 4-Decreased