How much spacing should be provided in between the tubes?

______ allow the water to soak into the ground.

What is the size of the oil droplets?

What is the velocity considered for a flotation thickener to remove oil?

The first chamber in a septic tank should be at least __ of the total length.

Which of the following reasons is correct with respect to the need of providing baffle walls?

What is the function of two tanks provided in septic tank systems?

The heavy particles in the tank _____