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MEO Class IV – EK-General : 2023/SEP/06 – 2024/FEB/09

Question

Q6. i) Sketch and describe a biological sewage treatment system. (6)

ii) How does the biological Sewage Treatment Plant work? Explain. (6)

iii) What Is understood by the term BOD? What factors affect BOD. (4)

Asked in Year/Month/Ques No.

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