Nait 4Th Period Intro To Water Treatment

Front 1

The water cycle is also known as

Back 1

Hydrological cycle

Front 2

What are the three cycles of water when it reaches land

Back 2

Evaporation

Percolation

Surface runoff

Front 3

The level at which water stands in a shallow well is called

Back 3

Water table

Front 4

What is the common name for sodium hydroxide

Back 4

Caustic soda

Front 5

What are the complexes formed from the reaction of ammonia and chlorine

Back 5

Chloramines

Front 6

What is the weight of matter in true solution in a volume of water called

Back 6

Dissolved solids

Front 7

Gpg is measured as one gpg is equal to ____mg/l or ppm

Back 7

17.1mg/l

Front 8

Soft water is any water that contains less than

Back 8

1gpg of hardness minerals

Front 9

Water hardness is defined as

Back 9

Calcium and magnesium salts in solution

Front 10

Most home supplies range in hardness from ____gpg to ____gpg

Back 10

3 gpg to 50 gpg

Front 11

Hardness is measured in terms of gpg, ppm or mg/l. To convert from ppm to USg divide ppm by _____

Back 11

17.1

Front 12

The term hardness has three designations applying to water

Back 12

Total hardness

Temporary hardness

Permanent hardness

Front 13

Very hard water is over ______mg/l

Back 13

200mg/l

Front 14

Permanent hardness occurs if water is heated above

Back 14

299F (148C)

Front 15

Temporary hardness occurs at what temperature

Back 15

140F (60C)

Front 16

Total hardness is defined as

Back 16

Total amount of temporary and permanent hardness

Front 17

What is the acceptable pH for potable water

Back 17

6.5 to 8.5

Front 18

Acidic water can be treated with

Back 18

Neutralizing filter

Front 19

Turbidity can usually be removed by

Back 19

Sand filter or alum

Front 20

TDS should not be more than ____ppm

Back 20

500ppm

Front 21

TDS can be reduced by

Back 21

Reverse Osmosis

Distillation

Front 22

People with high blood pressure should not drink water with more than ______mg/L

Back 22

20

Front 23

The only method to remove sodium is

Back 23

Reverse osmosis

Front 24

Sulphur and H2S can be removed by

Back 24

Manganese green sand

Chem free

Chlorination

Front 25

To convert from ppm to grains/impgal divide ppm by

Back 25

14.3

Front 26

A pH of 7 is considered

Back 26

Neutral

Front 27

A pH of 3 is considered

Back 27

Acidic

Front 28

Iron is harder to backwash from a softener because

Back 28

It is heavier

Front 29

Potassium permanganate chemically recharges greensand iron filter with

Back 29

Oxygen

Front 30

To remove waste and odor from water use

Back 30

Activated carbon filter

Front 31

What minerals are used to recharge a softener

Back 31

Sodium

Potassium chloride