I have a "squelching" noise coming from the discharge of my basement sump pump line.?

Question

I am unfamiliar with basement sumps. I was awoken by my wife early this morning due to a "whirring sound coming from our "living room". After investigating, I traced the noise to the basement. I cannot locate the exact source ot the noise, but I am fairly certain that the noise is coming from the discharge line of one of our sump pumps. It sounds similar to high pressure air rushing through a restricted pipe. I can feel that particular pipe vibrating. I have NO idea what is going on. The vent line does not vibrate, the pump is not on. I can now hear the noise throughout the house. Great...in the process of typing this post, the sound is gone. Any ideas what the noise could be or how to fix it should it return?

Thanks in advance,

D

Answer 1

This could be the water softener discharging into the sump.

Answer 2

that may have been the backflow after the pump shut off. the pump will never eject every drop. you may have heard the pump as it was pumping the last that it could. then shut off, then the backwash. if sump is empty that is probably what it was