What is the ideal mixing time required for polymers?

What is the one disadvantage of adding chemicals to bring about precipitation?

What is the time period for which the water is stored in fill and draw type of sedimentation tank?

What is the major assumption made when solid flux method is used to find the area of the sedimentation basin?

At what pH is phosphate precipitated out?

Microflocculation is brought about by which phenomenon?

1 micrometer = ___

How is the height of the sludge calculated in a sludge drying bed?