The sludge does not contain waste water from_________________?

A. Methane gas
B. Hydrogen sulphide
C. Carbondioxide gas
D. Diesel vapours

A. 0.4 to 0.5 m
B. 0.5 to 0.7 m
C. 0.7 to 0.9 m
D. 0.9 to 1.20 m

A. 50 m
B. 100 m
C. 200 m
D. 300 m

A. Q = [(4 + )/(18 + )] q
B. Q = [(18 + P)/(4 + )] q
C. Q = [(18 + )/(4 + )] q
D. Q = [(5 + )/((15 + )] q

A. 1 in 5
B. 1 in 10
C. 1 in 15
D. 1 in 20