Over the past year or so, we have noticed a rotten egg (sewer) smell in our laundry area when the washing machine is running or has run. We have a Frigidaire side loader that we purchased new about 4 years ago. We never had a problem with it making a smell in the first 3 years. I'm 99% sure the smell is coming from the discharge line and not the washer itself.
About 3 months ago, I physically moved the discharge line 2 feet closer to the main stack, thinking that it was not close enough to the stack for venting (see attached pic). You can see in the photo where the old line was from the paint marks. The discharge line goes into a drum trap. I use the correct discharge hose from the washer, with the curved piece to go into the PVC discharge pipe. The problem seemed to disappear for about 3 months after I moved the pipe. However, we started noticing the smell again this past weekend.
What could be causing this smell? I'm guessing that mold/algae or something is growing in the drum trap and causing this smell. Why would it do that? Is there anything I can do to prevent it or something I can do to neutralize the odor? We only smell it when the washer runs or right after it is done.
Any help or insight is greatly appreciated.
P.S. We have no other problems with any of the other waste lines in the house.
About 3 months ago, I physically moved the discharge line 2 feet closer to the main stack, thinking that it was not close enough to the stack for venting (see attached pic). You can see in the photo where the old line was from the paint marks. The discharge line goes into a drum trap. I use the correct discharge hose from the washer, with the curved piece to go into the PVC discharge pipe. The problem seemed to disappear for about 3 months after I moved the pipe. However, we started noticing the smell again this past weekend.
What could be causing this smell? I'm guessing that mold/algae or something is growing in the drum trap and causing this smell. Why would it do that? Is there anything I can do to prevent it or something I can do to neutralize the odor? We only smell it when the washer runs or right after it is done.
Any help or insight is greatly appreciated.
P.S. We have no other problems with any of the other waste lines in the house.