Quote:
Originally Posted by Hairytank
Just to be certain where the noise is coming from...according to your post it sounds like your noise is coming from your sump and not the overflow..is this correct?
ie: when you stick your head in the stand over the sump..the sound is coming from there and not from above...?
Some possible solutions if it is the water entering the sump that is causing the noise.
If the end of the plumbing for the water to enter into the sump is submerged too much then there will be backpressure and it is more difficult for the air to get out until pressure builds up and then large bubbles will be forced out relieving the pressure until it builds again. This will cause fluctuations in your water as once the built up bubbles escape then the water flows better, lowering the water level.
A couple of solutions for this one, angle the pvc entering the sump and have it no more than 1-2" below the surface. If the plumbing is perpendicular (90 degree angle) to the water then it is harder for the air to be released. I would also add a filter sock to the plumbing entering the sump and this will break the bubbles up some and help reduce noise and bubbles in the sump. Besides a filter sock if maintained properly will polish your water nicely.
|
The noise is from the water entering the sump. There are a great amount of large bubbles with the water. I was also thinking that the backpressure was the cause of the fluctuating water level, but I was hoping for a different solution as the sump would need to be changed to allow for a different angle of entry.
"But the main purpose is to stop the air from entering the drain and stay in the standpipe exiting through the vent hole(s). Running a horizontal section will also help, it will slow the flow and cause the pipes to flood better again keeping air in the standpipe not the sump. It really sounds like you would benefit from a Herbie style overflow, but I'm guessing you only have the one drain?"
I agree that it is probably the air coming through with the water causing the noise. The drain is right above the inlet to the sump so not enough room for a horizontal section unless I change the inlet to the sump to another corner. Yes you're right, only one drain.