Volume 1, Second Edition

Question 1

What are the four major classifications of waste material in wastewater?

Answer 1

Organic, inorganic, thermal waste and radioactive waste.

Question 2

Domestic wastewater contains mostly (a) organic material, or (b) inorganic material?

Answer 2

(a) organic material

Question 3

What physical characteristics make some solids settleable and others nonsettleable?

Answer 3

The main physical characteristics that determine whether a solid is settleable or nonsettleable are size, shape and weight per unit volume (density) of the solid particles.