Chapter 6 - Total Suspended Solids

Question 1

Suspended Solids

Answer 1

Particles held in temporary or permanent suspension against the force of gravity. Originate from erosion, vegetative debris, and microorganisms. Vary from colloids to gravel and silt.

Question 2

Total suspended solids analysis

Answer 2

Like TDS analysis, but TSS collects particles contained on the filter

Question 3

Suspended solids settling forces

Answer 3

Buoyant force, drag force, and gravitational force

Question 4

Net gravitational force =

Answer 4

gravitational force - buoyant force

Question 5

Soil classification tool

Answer 5

U.S. Standard Sieve

Question 6

Stokes Law variables

Answer 6

Vs = terminal settling velocity
g = gravitational acceleration (9.81)
pp = particle density
pw = water density
D = particle diameter
u = viscosity

Question 7

Colloids

Answer 7

Suspended particles with sizes 1nm - 1um. Are small and have a large surface area and reactivity

Question 8

Tyndall effect

Answer 8

colloids are large enough to scatter light, so the light path in a colloidal suspension is visible

Question 9

Brownian movement

Answer 9

The random movement of colloidal particles

Question 10

What can be absorbed into a colloid?

Answer 10

Contaminants

Question 11

What is a risk due to colloid-facilitated transport?

Answer 11

Groundwater contamination

Question 12

Water absorbs light more strongly at what part of the visible spectrum?

Answer 12

Red

Question 13

What color light is scattered back and visible?

Answer 13

Blue-green

Question 14

Can remove suspended solids with what instrument?

Answer 14

Settling basin

Question 15

Suspended particles do what to natural waters?

Answer 15

Increase turbidity, impact apparent color, and interfere with light penetration