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Influent
Influent is flow that enters the Wastewater Treatment Plant and is a combination of residential, commercial and industrial wastewater. The WWTP services The City of Red Deer and the Waskasoo Regional Line from the community of Penhold. Characterization of wastewater describes the concentration or amount of waste in the wastewater as the following tests will determine and are collected and analyzed by WWTP staff.
- BOD (Biochemical Oxygen Demand)
- COD (Chemical Oxygen Demand)
- Nitrogen as ammonia, nitrite and nitrate
- Phosphorus
- TSS (Total Suspended Solids)
- SS (Settleable Solids)
- pH
- Temperature
- DO (Dissolved Oxygen)
- Dissolved Solids
- Chloride
Other pollutants measured include toxic substances such as arsenic, zinc, and copper. Another important factor to consider is the flow or volume of wastewater received daily.
Headworks
The headworks is the first process for the wastewater as it enters the WWTP. Large screw pumps lift the wastewater into the headworks where the wastewater passes through screens for removal of large solids, sticks and rags. The influent flow is sampled automatically for lab analysis and the flow is monitored for explosive and toxic products such as; gasoline, solvents and H2S gas.
Grit Traps
Grit traps remove the inert (untreatable) solids such as sand, silt and gravel. Grit removal is accomplished by providing an enlarged chamber, which causes the flow velocity to be reduced through differential sedimentation (vortex) and allows the heavier grit to settle to the bottom of the channel where it can be removed and brought to the Waste Management Facility.
Primary Clarifiers
Primary treatment is a wastewater treatment process that takes place in our large aboveground circular tanks. It allows the substances in wastewater that readily settle (sludge) or float (scum) to be separated from the wastewater being treated. The sludge and scum are pumped to a different process for further treatment.
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