How long must a pretreatment system operate to process wastewater generated by an industry producing 100000 gallons per shift for 8 hours?

To determine how long a pretreatment system must operate to process wastewater produced by an industry, we need to calculate the daily wastewater generation and then assess the operational time required for treatment.

In this case, the industry is generating 100,000 gallons of wastewater per shift that lasts 8 hours. This means the total amount of wastewater produced in one shift is already given as 100,000 gallons.

The pretreatment system must be able to process the entire volume of wastewater generated during that 8-hour shift. If the system has a particular flow rate (the rate at which it can treat water), you can use that rate to calculate how long it will take for the system to process the 100,000 gallons.

The correct answer, which states that the pretreatment system must operate for approximately 11.1 hours, indicates that the flow rate of the treatment system is likely lower than what is needed to process 100,000 gallons within the 8-hour shift. To arrive at 11.1 hours, one could deduce that the system operates at a certain capacity that requires an extended amount of time compared to the shift duration.

This reveals the importance of knowing the treatment system's capacity and time required to process specific volumes of wastewater