Dbp

Question 1

Dbp removal systems (3)

Answer 1

1. Oxidation- ozone, chlorine dioxide, UV
2. Aeration- open storage, diffused air and packed towers
3. Absorption- PAC AND synthetic resins

Question 2

Turbidity reduction

Answer 2

Using conventional or direct filtration, enhanced coagulation and softening , flocculation, sedimentation, and disinfection

Question 3

DBP’s are produced by

Answer 3

The reaction of free chlorine with organic materials found in natural waters called precursors

Question 4

Dbp reduction techniques (3)

Answer 4

I. Reducing detention times in storage tanks
2. Ensuring turnover in system
3. Flushing dead ends

Question 5

Chloramines are formed by adding

Answer 5

Ammonia to chlorine

Question 6

What increases production of thms?

Answer 6

Pre chlorination