Tests:
1. Where is determined by the residual ozone?
A) after settling tanks
B) after the distribution network
B) on the main lines
D) after coagulation
D) after the displacement chamber
2. Where are the chlorine contact with water?
A) Distribution Network
B) in the pure water tank
B) in lagoons
G) filters
D) in the aeration tank
3. Where is determined by the residual chlorine after the tanks of clean
water?
A) slowly filtered
B) in a horizontal decanter
B) before being fed into the distribution network
D) in the aeration tank
D) in metontenke
4. What methods are used to prevent chlorine smell chlorophenol.
A) dechlorination
B) preammonizatsiya
B) a simple chlorination
D) superchlorinate
5. What do you understand by the optimal dose of chlorine
A) is the dose of coagulant dose of chlorine sanitation +
B) is hlorpoglaschaemost water + sanitary norm of residual chlorine
B) is hlorpoglaschaemost water + 0.3 + 0.5 mg / L chlorine izveti
D) if the index is + if the titer
D) is a haze - transparency
6. The sampling frequency of the residual water determination amounts
of reactants
A) 3 times per day
B) 2 times per day
B) daily
D) 4 times per day
D) at least once per shift
7. Укажите частоту determination of residual chlorine for disinfection of
water products containing chlorine.
A) at least 2 times a day
B) every 0.5 hours
B) at least once per hour
D) 1 time per day
D) two times a day
9. Premises chlorination should be ...
A) isolated from the other room and have an escape route
B) are designed for cooking and Basker bleach
B) stored reserves of chlorine
D) open in order to ventilate
D) are designed for special storage
10. What is the hygienic value determination of residual chlorine?
ON) residual chlorine of 0.1-0.3 mg / l bacterial indicates security water
B) residual chlorine is important when deferrization water
B) residual chlorine 0.3-0.5 mg / L indicates the epidemiological safety of
water
D) residual chlorine is important in eliminating odor
E) the residual chlorine plays a role in the coagulation process water......
1) Give the hygiene standards of residual free chlorine after 30 minutes
of contact.
A 0.5-0.9 mg / l
B- 0.3-0.5 mg / l
B 0.8-1.2 mg / l
T- 0.8-1.5 mg / l
2) Specify the frequency determination of residual chlorine for
disinfection of water containing chlorine preparations.
A least 2 times a day.
Each B- 0.5 hours.
B at least 1 time per hour.
T- 2 times a day.
D- 1 time per day.
33) What are some methods of disinfection of drinking water.
A reagent and mechanical
B- reagentless and tools
B instrumental and mechanical
T- and reagent reagentless
D- and mechanical reagent
4) The reagent methods of disinfection are
A gamma rays, and Coagulation
B-ozonation and UV
B- chlorination, ozonation, act silver
T- UV and chlorination
D- coagulation and fluoridation
5) For non-reagent methods of disinfection include
A gamma rays, and Coagulation
B- desalination and degassing
B boiling and disinfection
T- coagulation, desalination
D- UV and gamma rays
6) the chlorination
A coagulation, giperhlorirovanie
B- simple coagulation
B single, double, giperhlorirovanie
T- detoxification, coagulation
D- coagulation, degassing
7) What is hlorpogloschaemost water
A number of active chlorine going on disinfection and oxidation of 1 liter
of water
B- amount of hypochlorite and chlorine residual disinfection going on 1
liter of water
B- sanitary norm of residual chlorine disinfection going on 1 liter of water
T- bleach which is consumed for water clarification
D- coagulant that is spent for water clarification
8) What is the basis the effectiveness of the disinfection of drinking water
with chlorine.
A) - speed of action, oxidation bacteria preammonizatsiya.
B) -bakteriostaticheskoe action, oxidation bacteria adsorption chemicals.
B) - fast hydrolysis, color, flavor. D) - on the bactericidal action, oxidation
bacteria adsorption on vzveschennyh substances.
D) -preammonizatsiya smell, taste, and speed of hydrolysis.
9) What are the substances used for the chlorination of drinking and
A) Papa, hydrogen sulfide, nitrogen dioxide,
B) - aluminum sulfate, iron chloride, PAA
B) - hypochlorite, aluminum sulphate PAA
D) - liquid chlorine, calcium chloride and potassium
D) - bleach, hypochlorite, liquid chlorine
.
10) What are the requirements for hygienic storage for bleach.
A) - must be chlorine, moist, light,
B) - should be cool, dry and dark. well ventilated
B) - should be an open, bright,
F) - should be bright, sealed, closed
D) - must be sealed and light
1. Choose the correct answer, which meet hygienic requirements
organoleptic properties of drinking water:
A. smell and taste 2 points 2
B. 20 0 color turbidity of 3 mg / l
250 C. color, turbidity 4 mg / l
200 D. chromaticity turbidity 1.5 mg / l
3 E. odor, color 300
2. Specify the special processing of drinking water:
A. removal of iron and fluoridation
B. obezftorirovanie, coagulation
C. fluoridation, UFL
D. obezftorivanie, desalination
E. UV disinfection.
3. What diseases are infectious origin arise from water:
A. caries and fluorosis
B. Mumps and goiter
C. methemoglobinemia and endemic goiter
D. arthritis, kidney stones
E. dysentery
4. What are the advantages of the method of water disinfection UV
compared to chlorination:
A. quickness disinfection
B. independent of colloids and turbidity
C. odorless
D. does not depend on the color, colloids
E. there is no need for reagent facilities.
5. What kind of scheme to improve the quality of water is recommended
if the water quality meets the requirements of Class II water from an
open water source:
A. coagulation and sedimentation
B. desalination and advocacy
C. filtration and disinfection
D. discoloration and filtration
E. aeration
6. Specify the principle of determining the optimal dose of coagulant:
A. Theoretical calculation of the dose
B. Definition of color and transparency
C. chroma and transparency
D. conduct trial coagulation
E. definition of microbial contamination and residual reactants
7. List the basic safety performance of centralized water supply system:
A. chlorides and sulphates 1350 1500
B. 1500 sulfates and nitrites 0.005
C. dry residue 1000 and chlorides 350
D. chlorides 750 and the smell of 10
500 E. sulfates and fluoride 0.7
8. Select the size of the border zone II 3SO for stagnant water bodies:
A. If the number of winds in the direction of the water intake to 10% in all
directions at a distance of 3 km
B. when the amount of wind-100m
C. If more than 10% in all directions 5km
D. the number of winds up to 20% of 10m in all directions
E. when the number of winds up to 20% -100 m
9. What are the requirements for the composition and properties of water
in wells and catchments:
A. transparency of at least 30 cm and 300 chromaticity
B. nitrates 15
C. coli index 100
D. nitrates 10
E. coli index 10
10. What factors depends on the coagulation process:
A. of alkalinity
B. contact time
C. coagulant dose
D. from power
The composition E.