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41 Cards in this Set
- Front
- Back
- 3rd side (hint)
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A wastewater with a pH of 6.8 would be considered? |
Acidic |
Below neutral |
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A pH balance of 7.0 is ? |
Neutral |
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A pH balance at 9.3 is considered? |
Alkaline |
Above neutral |
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Wastewater usually appears? |
Gray |
Before treatment |
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Gpcd is? |
Gallons per capita per day |
Perperson |
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Each person contributes how many gallons of water per day? |
100 gallons per day of wastewater |
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What is waste water? |
Used water and solids that flow to the treatment plant. |
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In Iowa wastewater facilities are classified as? |
Grade I, II, III, IV, IL, IIL |
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What are the requirements to take your first level of operator certification? |
A high school diploma and one year of operators experience. |
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What state agency regulates publicly owned treatment plants? |
DNR department of natural resources |
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How many regional offices does DNR have an Iowa? |
6 |
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DNR is the? |
Department of Natural Resources |
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The term "influent" means? |
Waste water flowing into a tank, reservoir, holding pond, basin, treatment process, or plant |
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The term "effluent" mean? |
Waste water flowing from a tank, reservoir, holding pond, basin, treatment process, or plant |
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Preliminary and primary treatment are the same thing. true or false? |
False |
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The definition of "pollution" is? |
The impairment of water quality which threatens aquatic and human health. |
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The impairment of water quality which threatens aquatic and human health is? |
Pollution |
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What is hydraulic loading? |
Refers to the flows to a treatment plant or process. |
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What are the flows to a treatment plant or process called? |
Hydraulic loading |
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Organic loading is? |
The BOD loading on a treatment plan for process. |
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What is BOD loading on a treatment plan or process called? |
Organic loading |
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Scum is? |
The solids that float on the surface of a tank or clarifier. |
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The solids that float on the surface of a tank or clarifier is called? |
Scum |
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Biosolids are? |
Primarily organic solid product, produced by wastewater treatment process that can be beneficially recycled. |
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The primary organic solid product, produced by wastewater treatment process that can be beneficially recycled. |
Biosolids |
Replaces the word sludge |
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Aerated |
Another term for "Anaerobic" |
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Another term for "Anaerobic" is? |
Aerated |
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H2s is? |
Hydrogen sulfide |
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What is the periodic term for hydrogen sulfide? |
H2s |
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How much does a gallon of water weigh? |
8.34 pounds |
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What is BOD? |
Biochemical oxygen demand |
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What information must be on a warning tag attached to a switch that has been locked out? |
Signature of person who locked out of the switch and who is the only person authorized to remove the tag. |
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The minimum scouring velocity normally use for sanitary collection line is? |
2 ft/sec |
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The maximum scouring velocity normally use for sanitary collection line is? |
10 ft/sec |
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How many CEUs are needed to renew a grade 1 wastewater certificate every two years? |
1 CEU |
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How many CEUs is required to renew a grade 3 wastewater certificate every two years? |
2 CEUS |
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TSS |
Total suspended solids |
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What does "NPDES" stand for? |
National pollutant discharge elimination system |
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What is the most common method/means of preserving a waste water sample that cannot be analyzed immediatly? |
Keeping it below 6 degrees C |
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PH samples must be analyzed? |
Immediately |
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What temperature should a BOD incubator be maintained at when incubating BOD samples? |
20 degrees C +/- 1 dagree C |
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