Partial clarification of water by coagulation and sedimentation done prior to
fiItration is known as ____________________.
If used, plain sedimentation always includes:
Chemically induced disinfection.
d. Chemically assisted filtration.
What is floc?
a. A fluffy white, sticky substance, which floats on the surface.
b. A transparent, gelatinous and sticky mass, which makes the water very
An insoluble, jelly-Iike substance that entraps turbid particles to form fast
d. A chemical compound, which reduces surface tension, thereby assisting in the
What are the three critical essentials to proper flocculation?
b. Continuous aeration.
Thorough and uniform mixing.
d. Carefully controlled temperature.
e. Carefully controlled chemical feeding.
Carefully controlled depth of the water.