Why is there a smell coming down from the toilet bowl in the upstairs toilet

There are several reasons why there will be a foul smell coming down from the toilet bowl in the upstairs toilet:

1. The floor drain is back to smell, and the toilet floor drain should have a reverse water bend, and it is usually relied on the sealing of water to prevent the odor, so it is recommended to use an anti-odor floor drain.

2. The connection between the sewer pipe of the sink and the sewer is not strictly sealed, which becomes the channel for the sewer odor to enter the room. You can ask the renovation worker to seal the gap at the interface with glass glue or other adhesive so that the gas cannot be discharged.

3. The toilet has an aftertaste, the structure of the toilet is unreasonable, and the water seal is not strict, which will cause the smell of the sewage pipe.

4. When the toilet is installed, the sewage pipe is misplaced, the base sealing ring is aging or the base is not well sealed, which will lead to aftertaste and even leakage of sewage, so it is best to reinstall it.

5. The toilet emptying pipe on the floor is blocked, and because the water seal position of the toilet is nearly 70 cm higher than the sewage outlet of the sedimentation tank, this water trap has the effect of odor insulation. Toilets for home improvement generally have their own traps. So when this kind of problem occurs, it is best to find a property.

5. If the renovated pipeline is not equipped with a water trap, the sewage will come out, so it takes a lot of impact to vent from the toilet or there is sewage to come out, and there is a gap between the toilet pressure and the sedimentation tank.

6. There is no windproof plug installed in the exhaust outlet at home.

This problem relates to the field of urban water supply and drainage engineering, especially in the field of drainage, specifically to the special single riser drainage system of sewage and waste confluence (i.e., fecal sewage and washing wastewater discharged with the same pipeline) in the technical measures of civil construction engineering: that is, the drainage pipe is provided with a thicker (generally 110) riser with special pipes or special fittings, and the drainage pipe adopts special fittings when the horizontal branch pipe (generally 50-75) is connected to the drainage riser, and the lower part of the drainage riser adopts the lower special fittings, and only has a top ventilation pipe. According to the above structural analysis, there are three main possibilities for this phenomenon:

1.Because the system does not have an air circulation bypass pipe, when a large amount of drainage is carried out in the upper layer, the waste sewage will be squeezed by gravity and the air of the riser will enter the horizontal branch pipe of the lower layer, if the lower layer is not equipped with special accessories (here it mainly refers to the back-bend or other functional components) when the horizontal branch pipe is connected to the riser, and at the same time, the urinal, washbasin, bathtub, floor drain, etc. are not technically treated, and the odor in the riser will enter the floor through the above-mentioned collection port;

2.The diameter of the main riser is designed to be small or the fouling of the inner wall is serious, resulting in the "piston phenomenon" of the main riser, which makes the above-mentioned facilities or accessories malfunction;

3.The top ventilation pipe at the bottom of the main riser or (and) the roof of the building is blocked, and the air retention in the main riser is serious, and the air vortex generated when falling into the water will break through the above accessories and enter the floor.

Workaround:

1.Install anti-bends at the places where the horizontal branch pipes are connected to the main riser, urinals, washbasins, bathtubs, etc. The floor drain is replaced with an odor-proof floor drain;

2.If the main riser is small, replace the main riser with a larger diameter and check and clean the inner wall of the riser

3.Check and clean the bottom of the main riser, check and dredge the extension top snorkel and install an anti-bird cap.

In addition, it is important to note that if the entire system has reached the end of its useful life, or if the original design is not reasonable enough, it is better to replace the entire drainage system. The design principle of civil drainage system: one pass and three prevention. One pass refers to patency; The three proofs are anti-rat, anti-leakage and anti-odor.

Summary. 1. The floor drain is back to smell, and the toilet floor drain should have a reverse water bend, and it is usually relied on the sealing of water to prevent the odor, so it is recommended to use an anti-odor floor drain. 2. The connection between the sewer pipe of the sink and the sewer is not strictly sealed, which becomes the channel for the sewer odor to enter the room.

You can ask the renovation worker to seal the gap at the interface with glass glue or other adhesive so that the gas cannot be discharged. 3. The toilet has an aftertaste, the structure of the toilet is unreasonable, and the water seal is not strict, which will cause the smell of the sewage pipe. 4. When the toilet is installed, the sewage pipe is misplaced, the base sealing ring is aging or the base is not well sealed, which will lead to aftertaste and even leakage of sewage, so it is best to reinstall it.

5. The toilet emptying pipe on the floor is blocked, and because the water seal position of the toilet is nearly 70 cm higher than the sewage outlet of the sedimentation tank, this water trap has the effect of odor insulation. Toilets for home improvement generally have their own traps. So when this kind of problem occurs, it is best to find a property.

5. If the renovated pipeline is not equipped with a water trap, the sewage will come out, so it takes a lot of impact to vent from the toilet or there is sewage to come out, and there is a gap between the toilet pressure and the sedimentation tank. 6. There is no windproof plug installed in the exhaust outlet at home.

1. The floor drain returns to the smell, the toilet floor drain water should have an anti-water bend, and it is usually sealed by the lack of water to prevent the odor, and it is recommended to use the anti-odor floor drain. 2. The connection between the sewer pipe of the sink and the sewer is not strictly sealed, which becomes the channel for the sewer odor to enter the room. You can ask the renovation worker to seal the gap at the interface with glass glue or other adhesive so that the gas cannot be discharged.

3. The smell of the toilet is unreasonable, and the water seal is not strict, which will cause the smell of the sewage pipe. 4. When the toilet is installed, the sewage pipe is misplaced, the base sealing ring is aging or the base is not well sealed, which will lead to aftertaste and even leakage of sewage, so it is best to reinstall it. 5. The toilet emptying pipe on the floor is blocked, and because the water seal position of the toilet is nearly 70 cm higher than the sewage outlet of the sedimentation tank, this water trap has the effect of odor insulation.

Toilets for home improvement generally have their own traps. Therefore, it is best to find a property when there is a problem of vertical change. 5. If the renovated pipeline is not equipped with a water trap, the sewage will come out, so it takes a lot of impact to vent from the toilet or there is sewage to come out, and there is a gap between the toilet pressure and the sedimentation tank.

6. There is no windproof plug installed in the exhaust outlet at home.

Do you have any other questions?

It is recommended to find the property to see if the bathroom drain pipe on the floor is blocked.

The toilet of home decoration generally has its own water trap, which has the effect of odor isolation, and because the water seal position of the toilet is nearly 70 cm higher than the sewage outlet of the sedimentation tank, it requires a lot of impact from the toilet or sewage coming out. So when this kind of problem occurs, it is best to find a property. Because the sewage pipe of the general sedimentation tank is directly connected to the toilet, there is generally no problem in this link.

Possible factors:

1. The renovated pipeline is not equipped with a water trap. (The trap can be insulated) 2, there is a gap between the toilet pressure and the sedimentation tank, and the sewage will come out.

3. There is a leak in the pipeline.

It is recommended to find the property to see if the bathroom drain pipe on the floor is blocked.

The toilet of home decoration generally has its own water trap, which has the effect of odor insulation, and because the water seal position of the toilet is nearly 70 cm higher than the sewage outlet of the sedimentation tank, it takes a lot of impact to come out of the toilet or sewage from the toilet. So when this kind of problem occurs, it is best to find a property. Because the sewage pipe of the general sedimentation tank is directly connected to the toilet, there is generally no problem in this link.

Whether he has renovated the pipeline has not installed the reverse water bend, and the flush toilet is checked to see if there is a leak, he is the most important.

There are several possibilities for this.

It may be that the toilet sewer pipe upstairs or in your house is not tightly sealed, and there is a leak, which needs to be checked carefully.

It could also be that there is a blockage somewhere, causing the smell to come out of your toilet.

Poor sealing.

Maybe the sealing is not done well, so gas is generated!

Your toilet is clogged under the water inlet, and water from the upper and lower floors escapes into your toilet.

When the water comes down, the gas in the drain pipe is compressed, so that the gas is poured in.

There is a leak. Let's find someone to fix it.

It may be because when you flush upstairs, the smell from the toilet pipes washes down and comes out of your toilet. This must have something to do with the piping design...

Could it be that there is a crack in the water pipe or something that is not connected well?