Choosing the Right Basin Size for Your Sewage Ejector Pump System

When it comes to selecting the right basin size for your sewage ejector pump system, there are several factors to consider. One of the best sources of guidance in this matter is the manufacturer of the pumping system itself.

In cases where only clear water enters the pit and is merely storm drainage, a larger basin may not be necessary. However, if you're dealing with a massive inflow caused by a 100-year rain or normal toilet waste that's being drained into the pit, it's crucial to ensure there's enough room for solids.

Debris buildup in the pit can be detrimental to level control systems, causing problems such as hanging up controls and damage to power cords and pumps. Having ample space in the pit also makes maintenance from above easier and less likely to cause system failure.

On the other hand, a larger basin than usual may not always be an advantage. Grease, for instance, can rise to the top of the pit and harden, making it challenging for ejector pumps to function effectively. In commercial buildings where waste is received from grease traps, this can be particularly problematic.

In any application where solids will be introduced into the basin, it's essential to consider the potential challenges and make informed decisions about space allocation. This may involve fighting for more space or allowing for a smaller pit depending on the specific demands of your system.

Building codes typically require a minimum sump level of three feet below the lowest inlet, but this may not be sufficient in all cases. A general rule of thumb is to ensure at least four feet from the lowest inlet to the bottom of the basin and a foot or more of clearance outside each pump and between them, depending on the type of media being pumped.

Ultimately, choosing the right basin size for your sewage ejector pump system requires careful consideration of these factors to ensure optimal performance and longevity. By consulting with manufacturers and following guidelines such as those outlined above, you can make informed decisions that protect your investment and minimize maintenance headaches down the line.

Sewage ejector pump system