What is the minimum vent pipe size from a sump or receiving tank for a sewage pump system?

The minimum vent pipe size from a sump or receiving tank for a sewage pump system is 1 1/2 inches. This size is designed to ensure that any gases produced during the sewage handling process can escape effectively, preventing pressure buildup within the system. Adequate venting is crucial not just for the safe operation of a sewage pump but also for overall safety and odor control in sewage systems. A vent pipe that is too small might lead to inadequate ventilation, which can create pressure issues or result in the release of harmful gases inside the structure. A 1 1/2-inch pipe is typically the standard minimum size that balances efficient ventilation while still conforming to plumbing codes and safety regulations.

Other options, while larger, could unnecessarily increase the cost and complexity of the system without providing significant benefits for venting in typical applications. Therefore, using 1 1/2 inches as the minimum size is both practical and compliant with established plumbing standards.