Physical characteristics of WW

Question 1

What are phy charact of WW

Answer 1

Color and odor

Question 2

how color

Answer 2

yellowish : fresh, no decomp
grey-brown: partially decomp
black : fully decomp
others: show presence of industrial waste

Question 3

odor how

Answer 3

fresh sewage no odor, starts showing odor as decomposition starts

Question 4

odor caused due to

Answer 4

tempenes,hydrocarbons,oxygenated compounds,NH3,H2S,VOCs,H2S

Question 5

Sensorial techniques

Answer 5

dynamic olfactometry,field inspection,recordings from residents

Question 6

analytical techniques

Answer 6

GS-MS and GC-MS/0, Identification of specific compounds, electronic nose

Question 7

Dispersion models

Answer 7

Gaussian, Lagrangian,Eulerian

Question 8

What is turbidity measured by

Answer 8

Formazin Turbidity unit (FTU)

Formazin Nephelometric Units (FNU)

Jackson Turbidity Unit (JTU)

Nephelometric Turbidity unit (NTU)

Question 9

Turbidity determination in lab steps

Answer 9

1. Take 3 water samples : tap,muddy and distilled
2. Start turbidity meter and let it get stabilized
   3.take distilled water in sample tube and place it in turbidity meter. Then set zero
   4.then take tap water. tap water is clear so reading is zero
   5.now chec for muddy water
   measured in NTU