Question

05 Identify A, B, C and D:
A schematic diagram of waste water treatment plant:
A
Primary treatment
First stage
Secondary treatment
D
Third stage
С​

Answer 1

generalized wastewater treatment diagram is shown in Figure 5. ... In large sewage treatment plants (> 7600 m3/d in the US), primary sludge is most ... In the third aerobic zone, the sludge age is such that almost complete nitrification takes ... Effluent from first-stage anaerobic ponds will overflow into secondary facultative ...