What is a mechanical device for removing sewage or liquid waste from a sump called?

A sump pump is specifically designed to remove sewage and liquid waste from a sump pit, which is commonly found in basements and areas prone to flooding. This type of pump actively collects water that accumulates in the pit and pumps it away to prevent flooding or other water-related issues in the area it serves.

The sump pump operates automatically, activating when the water rises to a certain level, ensuring that the area remains dry and safe. Its construction and functionality enable it to handle a mix of liquid waste, including water containing solids, making it suitable for residential and commercial wastewater management.

In contrast, effluent pumps are tailored more towards pumping treated wastewater, primarily from septic tanks to absorption fields, rather than direct sewage removal. Drainage pumps typically refer to general pumps used for water removal in various applications, not specifically designed for sewage. Water pumps generally cover a broad category of pumps for moving water but do not focus on the sewage disposal needs that a sump pump addresses.