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35 Cards in this Set
- Front
- Back
The physical characteristics of water can be crudely evaluated using |
Our five senses |
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What is the term for living organisms that live in water |
Biological characteristics |
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Every substance that dissolved in water can be called |
A chemical water characteristic |
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What is the booklet produced by Health Canada |
Guidelines for Canadian Drinking Water and Quality |
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Inorganic pollutants are the |
Minerals and salts dissolved in water and the silt suspended in water |
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The acceptable range of pH is |
6.5 to 8.5 |
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The recommended limit of bicarbonate is |
1000mg/l |
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The recommended limit of chloride is |
250mg/l |
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The recommended limit of nitrate and nitrite is |
10mg/l |
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The recommended limit of sulphate is |
500mg/l |
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What is extremely undesirable in water |
Iron |
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What are the two forms of iron |
Ferrous and ferric |
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What form of iron is recognized by a stringy, slimy growth inside a toilet tank |
Bacterial iron |
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Water softeners can remove iron up to |
3ppm |
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High levels of iron can be removed by |
Manganese green sand filter |
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Manganese green sand filter will remove iron up to |
10ppm |
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Manganese green sand filter is regenerated using |
Potassium permanganate |
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Chem free iron filters introduce a small amount of |
Air into the system using a hydro charger |
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Chlorination followed by filtration through sand can remove |
Any quantity of iron in any form |
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What can be used to correct acidic water |
Neutralizer or soda ash |
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What filter will remove tastes and odours |
Activated charcoal |
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What is the acceptable level of TDS in water |
Up to 500ppm |
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Turbidity in water can be removed by the addition of |
Alum |
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Alum coagulates fine material into larger particles called |
Floc |
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Testing of water should be performed |
Annually |
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Hardness, iron and other minerals are more prevalent in |
Deep wells |
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Wells that are cleaner but are more likely to contain chemicals, minerals and pollution are usually |
Shallow wells |
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How many ppm is soft water |
0-50 |
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How many ppm is moderately hard water |
100-150 |
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How many ppm is hard water |
150-200 |
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People with high blood pressure should not drink water with more than |
20 mg/l |
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Sulphur and H2S can be removed by using |
Manganese green sand filter Chem free Chlorination |
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Biological impurities can removed by using a |
Chlorination UV light or boiling for a minimum of 10min |
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What two minerals cause permanent hardness |
Calcium carbonate Magnesium carbonate |
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What are the four factors that affect quantity of dissolved minerals in water |
Temperature Time Minerals pH |