Term
| Sulfate levels are an imprtant consideration in water because... |
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Definition
- it forms hard scale in boilers and hot water systems
- it causes oders in sewers
- in forms hydrogen sulfide under anaerobic conditions
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Term
| The advantage of the gravimetric test for sulfates is... |
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Definition
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Term
| The purpose of the barium ion in the sulfate test is.... |
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Definition
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Term
| At what level of silica will interfere with sulfate measurement? |
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Definition
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Term
| Sulfide form from sulfates under aerobic conditions |
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Definition
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Term
| The purpose of the jar tests is to evaluate coagulation and floculation only. |
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Definition
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Term
| Lower temperature water will likely cause a decrease in coagulant dose. |
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Definition
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Term
| How many RPMs is the current speed for flash mixing? |
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Definition
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Term
| BOD is defined as the amount of oxygen required by bacteria while stabilizing docomposable organic matter under aerobic conditions at 20 degrees C. |
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Definition
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Term
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Definition
| Biochemical Oxygen Demand |
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Term
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Definition
- determine the pollutional strength of streams
- determine the pollutional strength of domestic sewage
- determine the pollutional strength of industrial wastes
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Term
| The standard BOD test is incubated for a period of ____ days. |
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Definition
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Term
| The byproducts of complete oxidation in the BOD test are... |
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Definition
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Term
| The BOD oxidation is complete after... |
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Definition
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Term
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Definition
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Term
| The major item (s) of importance in the BOD test is (are)... |
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Definition
- freeedom from toxic materials
- favorable pH and osmotic pressure
- available nutrient elements
- presence of mixed organisms from soil conditions
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Term
| What minimum DO level is acceptable for statistical reliable BOD calculations? |
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Definition
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Term
| What minimum DO demand is acceptable for statistical reliable BOD calculations? |
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Definition
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Term
| Which bacterial group are nitrite formers |
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Definition
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Term
| Which bacterial group are nitrate formers? |
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Definition
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Term
| Discharge of ammonia nitrogen to receiving streams can seriously increase the dissolved oxygen levels. |
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Definition
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Term
| In the COD test, the organics are converted to carbon dioxide and water regardless of the biological assimilability of the substabces. |
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Definition
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Term
| The COD test results will always be higher than the BOD test results on the same sample. |
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Definition
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Term
| One of the advantages of the COD test is its ability to differentiate between biologically oxidizable and biologically inert organic matter. |
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Definition
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Term
| COD data can be interpreted in terms of BOD values after sufficient experience has been accumulated to establish reliable correlation factors. |
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Definition
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Term
| An excess of oxidizing agent must be present to ensure that all organic matter is completely oxidized in the COD dichromatic method. |
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Definition
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Term
| Ferrous ammonium sulfate titrant is a reducing agent in the Manganese III method. |
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Definition
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Term
| The design velocity for the silt and mud tank at the Canal Plant was how much? |
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Definition
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Term
| The detention time in the primary sedimentation tank at the Canal Plant was how much? |
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Definition
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Term
| The design time through the flash mixer at the Canal Plant was... |
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Definition
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Term
| The maximum permissible filter effluent turbidity required by TCEQ is how much? |
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Definition
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Term
| What were the two raw water oxidants used at the Canal Plant? |
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Definition
| Chlorine and Chlorine dioxide |
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Term
| Name the two finished water disinfectants used at the Canal Plant. |
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Definition
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