Q6 (10 Marks)
General
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Repeated 5x in exams
MEKG • Written Exam
(a) Sketch and describe a biological sewage treatment system. (6)
(b) How does the biological Sewage Treatment Plant work?Explain. (6)
(c) What is understood by the term BOD? What factors affect BOD (4)
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Dec 2025Dec 2024 - 1Feb 2024Sep 2023Apr 2023