Term
| Name four/five sources of wastewater |
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Definition
| residential, industrial, commercial, runoff/infiltration |
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Term
| what constituents are found in residential/commercial? |
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Definition
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Term
| what constituents are found in industrial? |
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Definition
| heavy metals, EDCs, toxic organics |
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Term
| what constituents are found in runoff? |
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Definition
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Term
| what constituents are found in infiltration? |
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Definition
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Term
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Definition
| National Pollutant Discharge Elimination System: pretreatment by generators before publicly owned treatment works (POTW) will accept it |
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Term
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Definition
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Term
| What was required in 1977? |
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Definition
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Term
| What did the Clean Water Act establish? |
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Definition
| WW standards for industry and water quality standards for surface water |
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Term
| Which part of CFR is important? |
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Definition
Title 40: protection of environment
Section Q: Sewage Sludge |
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Term
| What are the regulatory 30-day and 7-day values of BOD5 (mg/L) in WW effluent? |
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Definition
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Term
| What are the regulatory 30-day and 7-day values of TSS (mg/L) in WW effluent? |
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Definition
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Term
| What is the regulatory pH of WW effluent? |
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Definition
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Term
| What does TMDL stand for and what does it mean? |
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Definition
| Total Maximum Daily Load: threshhold that must not be exceeded. |
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Term
| What are typical levels of influent TS? |
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Definition
| mg/L: strong: 1200. Medium: 700. Weak: 350 |
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Term
| What are typical levels of influent TDS (<2 micrometer, correlates with conductivity)? |
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Definition
| mg/L. strong: 850. medium: 500. weak: 250 |
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Term
| Typical influent TSS values |
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Definition
| mg/L: strong: 350. medium: 200. weak: 100. |
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Term
| What are typical BOD5 influent values? |
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Definition
| mg/L: strong: 300. medium: 200. weak: 100. |
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Term
| typical influent alkalinity |
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Definition
| mg CaCO3/L: strong: 200. medium: 100. weak: 50. |
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Term
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Definition
| mg/L: strong: 85. medium: 40. weak: 20. |
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Term
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Definition
| mg/L: strong: 20. medium: 10. weak: 6. |
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Term
| What capacity of WWTP is most common in the U.S.? |
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Definition
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Term
| What capacity of WWTP contributes the most to all WW flow in the U.S.? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| What is the mole fraction? |
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Definition
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Term
| What is the most important physical constituent? |
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Definition
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Term
| How do you find total solids (TS)? |
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Definition
| tare pan, place known volume in pan, dry at 105 degrees, weigh. |
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Term
| How do you find total suspended solids? |
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Definition
| tare filter, filter known volume, dry at 105 degrees, weigh |
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Term
| How do you find total dissolved solids? |
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Definition
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Term
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Definition
| use TSS filter, place in furnace at 550 degrees Celsius, weigh. FSS = fixed suspended solids = solids still on filter. VSS = TSS - FSS |
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Term
| How is turbidity measured? |
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Definition
| light transmission through a sample. Turbidity meter = Nephelometer. |
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Term
| In what units is turbidity? |
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Definition
| NTU: Nephelometric Turbidity Units. Rivers typically <10 NTU. |
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Term
| How many NTU is an activated sludge facility, usually? |
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Definition
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Term
| What other qualities are important in water treatment? |
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Definition
| color, odor, taste, conductivity (correlates to TDS), temperature |
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Term
| What happens when you have too high of a pH? |
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Definition
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Term
| How do you determine the pH? |
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Definition
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Term
| How do you determine alkalinity? |
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Definition
| [HCO3-] + 2[CO3^2-] + [OH-] - [H+] |
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Term
| What sort of compounds do carbonates and bicarbonates come from in alkalinity? |
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Definition
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Term
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Definition
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Term
| What pH do methanogens require? |
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Definition
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Term
| What do acetogens produce? |
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Definition
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Term
| What is the nitrification process? |
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Definition
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Term
| How much alkalinity is consumed to convert NH4+? |
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Definition
| 7.14g CaCO3/gNH4-N converted |
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Term
| How much alkalinity is produced with NO3-? |
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Definition
| 3.57gCaCO3/gNO3- converted |
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Term
| What is the alkalinity of an anaerobic digester? |
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Definition
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