Wastewater Operator Class 3 Definitions (2022/2023) 100% Pass

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Wastewater Operator Class 3 Definitions (2022/2023) 100% Pass Clean Water Act ✔✔1977 primary legislation concerning water pollution and its regulation. It establishes the NPDES permit system th... at prohibits point sources from discharging pollutants into waters of the United States. EPA ✔✔Environmental Protection Agency is an agency of the federal government of the United States charged with protecting human health and the environment by writing and enforcing regulations based on laws passed by Congress NPDES ✔✔National Pollutant Discharge Elimination System is a permit issued by state or federal government regulating amount of pollutants wastewater treatment plants can discharge CFR ✔✔Code of Federal Regulations is the codification of the general and permanent rules and regulations published in the 'Federal Register' by the executive departments and agencies (like EPA) of the Federal Government of the United States Wastewater ✔✔The spent water of a community from homes, businesses, and industries Domestic Wastewater ✔✔Wastewater from homes and businesses with little to no industrial components Wastewater Physical Characteristics ✔✔temperature, color (gray), odor (musty), turbidity Sewer Use Ordinance ✔✔Local ordinance that addresses what is prohibited from being discharged and sets limits for particular pollutants POTW ✔✔Publicly Owned Treatment Works. A treatment works, as defined by Section 212 of the CWA, that is owned by the state or municipality. Includes the treatment plant and the collection system. Industrial Pretreatment Program ✔✔A program run by a permitting authority requiring industries to pretreat wastes and establishing discharge limits for the water sent to the POTW Sanitary Sewer ✔✔Sewer system that transports spent water from homes, business, and industries to the wastewater treatment plant SSO ✔✔Sanitary Sewer Overflow. Untreated of partiality treated sewage overflows from a sanitary sewer collection system Storm Sewer ✔✔Sewer system that transports stormwater runoff to a water body Combined Sewer System ✔✔A sewer system that transports both sanitary sewage and stormwater typically found in older municipalities CSO ✔✔Combined Sewer Overflow. A discharge of untreated wastewater from a combined sewer system at a point prior to the headworks of a POTW. CSOs generally occur during wet weather (rainfall or snowmelt) Sewer Main ✔✔Pipe that collects the wastewater from the system laterals and branch sewers and conveys it to larger trunk sewers Trunk Sewers ✔✔The main arteries of a collections system that convey water to treatment plants or interceptors Manhole ✔✔Opening to a sewer line for the purpose of permitting operators or equipment to enter or leave a sewer Lift Station ✔✔A wastewater pumping station that lifts the wastewater to a higher elevation; usually the next gravity sewer or the treatment plant The Collection System ✔✔A network of pipes equipment, and appurtenances that collect, pump, and transport wastewater to the wastewater treatment plant Slope ✔✔The ratio of the vertical distance over the horizontal distance. Rise over run Velocity ✔✔Ratio of distance over time (miles per hour) Minimum 2 ft/sec prevents solids from dropping out. Maximum 10 ft/sec because more than that causes scouring Roughness Coefficient ✔✔Related to the roughness of the interior of a pipe. Manning's formula. Roughness coefficient "n" The higher the value, the rougher the pipe Valves ✔✔Devices used to stop or modify the flow of water in a pipe Check Valve ✔✔A valve that normally allows water to flow through it in only one direction Inflow ✔✔A direct discharge into the sewer system through illegal connections or surface water entering through faulty joints or displaced manhole covers Infiltration ✔✔The seepage of groundwater into the sewer system through cracked joints or pipes Exfiltration ✔✔Sewage that unintentionally leaks out of a sewer pipe and into the environment. Usually from broken pipes, joints, cracks Cross-Connection ✔✔A connection between [Show More]

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