Which device is used to lift sewage by entraining it in a high velocity jet of steam air or perforated piping?

The correct answer is that a sewage ejector is specifically designed to lift sewage by using a mechanism that entrains it in a high-velocity jet of steam, air, or perforated piping. This device is particularly effective in applications where sewage must be moved from a lower elevation to a higher elevation, such as in basement installations where the sewage cannot flow by gravity.

Sewage ejectors work by creating a powerful suction that draws the sewage into the ejector system, mixing it with pressurized air or steam. The high velocity generated by the jetting allows the sewage to be propelled upward and out of the ejector, effectively overcoming gravity and transport limitations. This is essential in ensuring appropriate drainage and preventing backups in plumbing systems, particularly in residential settings where basements or below-grade facilities are involved.

The other devices listed serve different functions in the management of sewage and wastewater. A sewage pump does not rely on a jet of steam or air; it typically uses a motor-driven impeller to move sewage. A sewage separator primarily separates solids from liquids rather than lifting sewage. A sewage grinder reduces the size of solids to facilitate flow but does not have the capability to lift sewage like an ejector.

In summary, the sewage ejector's use of high