Remove Watermark Wondershare
PDFelement
Industrial Wastewater Treatment
, Remove Watermark Wondershare
PDFelement
Question 1: circle the most correct answer
1. An increase in water temperature is considered as pollution for several reasons:
a. in warm water than in cold, aquatic life suffers and less D.O is available for aquatic life and for
natural biological degradation of any organic pollution discharged into these warm surface
b. bacterial action increases in higher temperatures, resulting in accelerated consumption of the
streams oxygen resources
c. Heated water is of less value due to decreased levels of D.O
d. (a + b + c) are correct answers
2. The term “Industrial wastewater” includes:
a. Contaminated cooling water. Contaminated process waters and wash-down waters.
b. Water discharged from homes, businesses, schools and offices
c. Contaminated rain water collected at industrial plants
d. All (a +b + c) are correct answers
3. The filter should be backwashed when following conditions have been met:
a. The head loss is so high
b. Flocs starts to break through the filter and the turbidity in the filter effluent increases
c. Filter run reaches a given hour of operation
d. (a,b,c) all are correct
4. Filtration processes are installed in Water treatment plants for :
a. Removal of dissolved solids (salts and metal ions)
b. Removal of turbidity, suspended and colloidal solids
c. Inactivation of pathogens
d. (a + b+ c) are correct answers
5. In filtration, the amount of dissolved solids passing through the filters is
a. Difference between total solids and suspended solids
b. Sum of total solids and suspended solids
c. Independent of suspended solids
d. None of the above
6. In water treatment procedures, the purpose of coagulation and flocculation is to
e. Disinfect the water supply
f. Remove microorganisms, organic matter, and suspended fine particles
g. Soften the water by removing calcium and magnesium
h. Remove taste and odor problems
7. Which major step in wastewater treatment promotes the biological transformation of dissolved
organic matter into microbial biomass and carbon dioxide?
a. Primary treatment
b. Secondary treatment
c. Tertiary treatment
d. All of the above
PDFelement
Industrial Wastewater Treatment
, Remove Watermark Wondershare
PDFelement
Question 1: circle the most correct answer
1. An increase in water temperature is considered as pollution for several reasons:
a. in warm water than in cold, aquatic life suffers and less D.O is available for aquatic life and for
natural biological degradation of any organic pollution discharged into these warm surface
b. bacterial action increases in higher temperatures, resulting in accelerated consumption of the
streams oxygen resources
c. Heated water is of less value due to decreased levels of D.O
d. (a + b + c) are correct answers
2. The term “Industrial wastewater” includes:
a. Contaminated cooling water. Contaminated process waters and wash-down waters.
b. Water discharged from homes, businesses, schools and offices
c. Contaminated rain water collected at industrial plants
d. All (a +b + c) are correct answers
3. The filter should be backwashed when following conditions have been met:
a. The head loss is so high
b. Flocs starts to break through the filter and the turbidity in the filter effluent increases
c. Filter run reaches a given hour of operation
d. (a,b,c) all are correct
4. Filtration processes are installed in Water treatment plants for :
a. Removal of dissolved solids (salts and metal ions)
b. Removal of turbidity, suspended and colloidal solids
c. Inactivation of pathogens
d. (a + b+ c) are correct answers
5. In filtration, the amount of dissolved solids passing through the filters is
a. Difference between total solids and suspended solids
b. Sum of total solids and suspended solids
c. Independent of suspended solids
d. None of the above
6. In water treatment procedures, the purpose of coagulation and flocculation is to
e. Disinfect the water supply
f. Remove microorganisms, organic matter, and suspended fine particles
g. Soften the water by removing calcium and magnesium
h. Remove taste and odor problems
7. Which major step in wastewater treatment promotes the biological transformation of dissolved
organic matter into microbial biomass and carbon dioxide?
a. Primary treatment
b. Secondary treatment
c. Tertiary treatment
d. All of the above
