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3 cards from this section. Quick, good the night before a test.
Define sludge and its components.
What is formed as a byproduct of wastewater treatment?
What is a mass balance?
Think about how we track materials in an environmental system.
What happens to sludge when rainwater is added?
Consider what mixing adds to the sludge.
True or False: Equilibrium means concentrations change over time.
Think about what equilibrium signifies.
Calculate the concentration of chemical A in a scenario where 500,000 kg of sludge has a concentration of 200 mg/kg. After adding 1000 m³ of rainwater, what is the new concentration if the total volume of the mixture is 600 m³?
Use mass balance principles to find the new concentration.
If a facility wants to reduce the concentration of a pollutant in water from 300 mg/L to below 50 mg/L through dilution with rainwater (concentration 0 mg/L), how much more water must they add if they initially have 1000 L?
Think of how dilution affects concentrations in mass balance calculations.
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