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5th 6 Months > WATER TREATMENT CHAPTER 3 > Flashcards

WATER TREATMENT CHAPTER 3 Flashcards

(48 cards)

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1
Q

LOCAL CONDITIONS HAVE LITTLE INFLUENCE ON METHODS OF MAN-AGING LAKES AND RES. USED FOR DOMESTIC WATER SUPPLIES

A

FALSE

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2
Q

THE AMOUNT AND TYPE OF PUBLIC USE ALLOWED ON RES. HAS BEEN STANDARDIZED BY LAWS AND REGS.

A

FALSE

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3
Q

FEW OF THE CONDITIONS ADVERSELY AFFECT WATER QUALITY IN DOMESTIC WATER SUPPLY RES. RESULT FROM THE IMPACTS OF MAN’S ACTIVITIES UPON THE ENVIRONMENT

A

FALSE

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4
Q

OBJECTIONAL TASTES AND ODORS IN DOMESTIC WATER SUPPLIES ARE OFTEN RELATED TO THE OCCURRENCE OF ALGAL BLOOMS

A

TRUE

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5
Q

MANY CONVENTIONAL WATER TREATMENT PLANTS ARE CAPABLE OF REDUCING TASTES AND ODORS TO ACCEPTABLE LEVELS WHEN OPERATED PROPERLY

A

TRUE

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6
Q

ALGAE CAN DIE OF OXYGEN STARVATION

A

TRUE

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7
Q

IN A MONOMICTIC LAKE DURING WINTER MONTHS THE LAKE TEMP. IS UNIFORM FROM TOP TO BOTTOM

A

TRUE

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8
Q

MIXING OCCURS BETWEEN THE EPILIMNION AND HYPOLIMNION ZONES IN THERMALLY STRATIFIED LAKES

A

FALSE

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9
Q

FISH KILLS CAN RESULT FROM ALGAE CLOGGING THE GILLS OF FISH

A

TRUE

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10
Q

ONCE VEGETATION REMOVAL IS ACCOMPLISHED AT A RES. SITE REGROWTH SHOULD BE CONTROLLED UNTIL THE RES. IS FILLED

A

TRUE

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11
Q

CHLORINATION OF A WATER SUPPLY MAY EITHER INCREASE OR DECREASE TASTES AND ODORS

A

TRUE

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12
Q

THE BEST TOOL WHICH CAN BE USED FOR MANAGING WATER SHEDS IN MOST CASES IS THE REGULATORY PROCESS

A

TRUE

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13
Q

PHOSPHATE BASE FERTILIZERS USUALLY DO NOT CAUSE THE WATER QUALITY PROBLEMS CAUSED BY NITROGEN FERTILIZERS BECAUSE OF THE SOIL BINDING CHARACTERISTICS OF PHOSPHATE COMPOUNDS

A

TRUE

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14
Q

ALL ALGAE REACT THE SAME WAY TO COPPER SULFATE

A

FALSE

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15
Q

DESTRATIFICATION ALWAYS INCREASES THE NUMBER OF ALGAL BLOOMS IN RES.

A

FALSE

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16
Q

WITH COMPLETE DESTRATIFICATION TEMPS IN A RES. WILL BE NEARLY UNIFORM FROM TOP TO BOTTOM

A

TRUE

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17
Q

THROUGH PROPER DESIGN AND OPERATION RE DESTRATIFICATION SYSTEMS CAN BE USED TO MANIPULATE TEMPS AND DISSOLVED OXYGEN CONTENT TO DESIRED LEVELS

A

TRUE

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18
Q

THE OPERATOR OF A SMALL WATER SUPPLY SYSTEM MUST BE ABLE TO MANAGE THE WATER SHED AS WELL AS OPERATORS OF LARGE SYSTEMS

A

TRUE

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19
Q

RECORDS ARE VERY VALUABLE ONLY WHEN THEY ARE COMPLETED AND FILED BY LAB PERSONNEL

A

FALSE

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20
Q

THE INLET TO A SINGLE LEVEL INTAKE IS USUALLY LOCATED NEAR THE WATER SURFACE

21
Q

NUTRIENTS ACT AS A ________ IN A LAKE

22
Q

RES. WHICH ARE RICH IN NUTRIENTS AND VERY PRODUCTIVE IN TERMS OF AQUATIC ANIMAL AND PLANT LIFE ARE COMMONLY REFERRED TO AS

23
Q

WHAT PROBLEMS MAY BE CREATED FOR OPERATORS BY ALGAL BLOOMS IN DOMESTIC WATER SUPPLY RES.

24
Q

WHAT WATER QUALITY PROBLEMS ARE CAUSED BY IRON AND MANGANESE IN DRINKING WATER

Study These Flashcards
A

-DIRTY WATER
-STAINING CLOTHES
-STAINING PORCELAIN FIXTURES

25
PROPER MANAGEMENT CAN INCREASE RECREATIONAL VALUES OF A RES BE
-CONTROLLING MANS ACTIVITIES ON THE WATERSHED -REDUCING LARGE MATS OF ALGAE -REDUCING SCUMS OF ALGAE -REMOVING VEGATATION BEFORE FLOODING
26
TREES AND BRUSH SHOULD BE REMOVED FROM AREAS TO BE FLOODED BY RES. TO REDUCE THE _______ LOADING
-NUTRIENT -ORGANIC
27
ANAEROBIC CONDITIONS IN THE HYPOLIMNION OF A RES. CAN CAUSE
-FISH KILLS -ROTTEN EGG ODORS -IRON AND MANGANESE PROBLEMS
28
ALGAL BLOOMS IN LAKES AND RES. CAN BE CONTROLLED BE
-CHEMICAL METHODS -LIMITING NUTRIENT RECYCLING -PREVENTING NUTRIENT INFLOW
29
WHICH OF THE FOLLOWING WATER QUALITY INDICATORS HAVE A SIGNIFICANT IMPACT ON THE EFFICIENCY OF COPPER SULFATE AS AN ALGICIDE
-ALKALINITY -PH -SUSPENDED MATTER -WATER TEMP
30
WHICH CHEMICAL IS USED TO MAKE COPPER SULFATE EFFECTIVE IN HIGHLY ALKALINE WATERS
CITRIC ACID
31
THE REASONS FOR USING DESTRIFICATION PROGRAMS IN DOMESTIC WATER SUPPLY RES. INCLUDE IMPROVING
-AESTHETICS -FISHERIES -RECREATIONAL VEHICLES -WATER QUALITY
32
IMPORTANT WATER QUALITY INDICATORS THAT SHOULD BE CONSIDERED IN A LAKE DESTRIFICATION PROGRAM INCLUDE
-DISSOVLED OXYGEN -TEMP.
33
FACTORS AFFECTING WATERSHED MANAGMENT PROGRAMS INCLUDE
-SIZE OF WATERSHED -TOPOGRAPHY -VEGETATIVE CONDITION -WATER QUALITY PROBLEMS
34
WHICH OF THE FOLLOWING WATERSHED PRACTICES CAN AFFECT WATER QUALITY IN A WATER SUPPLY RES.
ALL
35
WATER QUALITY LAB ANALYSES WHICH MAY BE BES PERFORMED BY COMMERCIAL LABS INCLUDE
-PESTICIDES -RADIOACTIVITY -TEMP. -TRIHALOMETHANES
36
INTAKE FACILITIES SHOULD PREVENT ______ FROM ENTERING A WATER SHED SUPPLY SYSTEM
-ALGAL SCUMS -FISH
37
WATER QUALITY PROBLEMS CAUSED BY ANAEROBIC WATER ENTERING THE INTAKE INLET INCLUDE HIGH CONCENTRATIONS OF
-HYDROGEN SULFIDE -IRON -MANGANESE
38
TYPES OF INTAKE SCREENS INCLUDE
-SLOTTED PLATES -VEE WIRE -WOVEN WIRE
39
METHODS OF CLEANING INTAKE SCREENS INCLUDE
-BRUSHING WITH BRISTLE BRUSHES -JETTING WITH HIGH PRESSURE WATER -REVERSING THE FLOW
40
FACTORS THAT ADVERSELY AFFECT WATER QUALITY IN LAKES AND RES. INCLUDE
ALL
41
OBJECTIONAL TASTES AND ODORS IN A DOMESTIC SUPPLY MAY BE CAUSED BY
-ALGAE -HYDROGEN SULFIDE -OVERTURNS
42
TRIHALOMETHANES ARE OFTEN FORMED DURING CHLORINATION BY REACTIONS WITH
NATURAL ORANIC MATERIALS
43
PURPOSES OF RES. MANAGEMENT PROGRAMS INCLUDE
ALL
44
WHAT IS THE SURFACE AREA OF A RECTANGULAR SETTLING BASIN 60FT BY 15FT
900 SQUARE FEET
45
WHAT IS THE SURFACE AREA OF A CIRCULAR CLARIFIER 4O FT IN DIAMETER
1256 SQUARE FEET
46
CALCULATE THE VOLUME IN CUBIC FEET OF A RECTANGULAR SETTLING BASIN 8FTX15FTX60FT
7200 CUBIC FEET
47
CALCULATE THE VOLUME OF A CIRCULAR CLARIFIER 7FT DEEP BY 40FT IN DIAMETER
8800 CUBIC FEET
48
HOW MANY POUNDS OF COPPER SULFATE WILL BE NEEDED TO DOSE A RES. WITH .5 mg/L COPPER? THE RES. VOLUME IS 20 MILLION GAL. THE COPPER SULFATE IS 25% COPPER
335 POUNDS

5th 6 Months (13 decks)

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