The line going through wall to septic tank. As you can see the pump is not sealed so which is it



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is the pipe entering the top a vent ??
i have never seen a sump pump with a vent?
ejectors need a vent as they are a sealed system to prevent sewer smell from entering the home.
ground water type sump pumps need no seal nor do they need a vent.
so, that second pipe will tell you what you have..

what makes you think the pump is NOT "sealed"?

There is no vent and the top of the cover is not sealed there is a opening where the two pipes enter and leave. There is a rotten egg smell coming out of the sump whenever washer or drain is emptying into the sump. Sewage pump that I am familiar with have all the openings sealed a vent. This sump leads to the septic.

There is no vent and the cover of the sump is not sealed.pipe from washer and drain leads to sump the up and out to the septic tank. Terrible rotten egg smell when washer drains or any dryer time you run water into the drain of the wash tub.

your washing machine and other things empty into it..
then it is by definition a sewer ejector pump and needs to have the cover sealed and needs a proper vent to the atmosphere.
they way i would seal the cover would be to seperate the cover from the tank, clean and dry both surfaces really well, lay down a good generous bead of 100% silicone seal, cover the silicone with saran wrap and set the cover back with some weight to hold it until the silicone sets. you will get a good seal which will allow you to remove the cover for service.

Are there drain tile around the inside of the foundation under the floor that empty into the pit through the side(s) of the sump pit?
If so, ground water is going into your septic tank which is not correct. Ground water should be pumped to ground level and be sloped to drain away from the house. To much water going into the septic tank will prevent proper anaerobic bacterial process.
Is there a basement bathroom that drains into this pit through the side under the floor?
That should enter the septic tank and the pit needs a vent.
You may need to remove the cover to determine what you have. Then the experts can properly advise you.

THe picture shows that the cover is BOLTED down already, which SHOULD indicate the lid is sealed even though the pipes are notl

Yes the lid is bolted down but there is a 2 1/2” long slot where you can look into and where the pipes enter. No Vent and that is where I think the odor is coming from. The sewage pump I had in my other house everything was sealed with gaskets around the pipes and lid.

No toilets only washer discharge and drain from a double wash tub. Pretty sure rotten egg smell is coming from this sump cause it only smells when water running into it from washer and drain.

What about the pipes going in to sump and No Vent.

There is a gasket around the lid, which is why it is bolted down. The opening for the vent is where your drains go into the pit. The pipes should have rubber seals around them, but someone may have discarded them rather than go to the trouble of inserting them in the openings and pushing the pipes through them.

If that is true, then that basin was "overkill" for its usage.

You lost me with your last post that it is “over kill “ . With no vent is this causing the rotten egg smell.

overkill meaning the ejector is much larger than it needs to be.
not to worry, this won't hurt a thing...
as for the smell.
when the washer discharges it fills the tank with water. the water displaces the air in the tank and with the lack of a vent the air comes out into the house.
if you were able to seal the tank 100% tight, the washer water would pressurize the tank and most likely spill out the standpipe.

Thank you all for your inputes



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For what it is being used for, a sump with a bolted, gasketed cover is "Overkill". All it needs is a looselay cover over the top of the basin. Your basin is for use with a downstairs bathroom. I do not know where your odors are coming from since it should NOT be from the items draining into it.

Like I said before,the rotten egg smell is coming from the sump/sewage pump that I had sent pictures. Only time it stinks is when water from the washer and/or wash tub. The sump is not vented to the outside and the cover is not sealed where the pipe enters the sump.

if you run a vent from the washer/sink drain that will serve as a vent for the tank as well.