There are several different types of pumps for commercial systems. One thing they often have in common is their large demand for lifting effluent and achieving a high flow rate. Most pumps are three phased, making them more efficient and cost effective.
The use of multiple pumps to achieve dosing to the field is common. This provides a built-in fail safe if one pump stops working and can extend a pump’s life by allowing the second pump to take 50% of the work load. The control panel is aware of the pumps and will alternate their use.