Why does the sewer on the second floor always regurgitate upwards?

Prove that your second-floor sewer branch and main joint are located higher than your sewer inlet, and when there is water coming down upstairs, it will backwater back!

2nd floor sewer backwater solution.

Sewer dredging is generally divided into several types:

1. Solutions to foreign body blockage.

In daily use, if you accidentally fall into a foreign object or cause a blockage caused by a mistake in the newly installed pipeline, you generally use a pipe dredging machine to dredge or replace the pipe.

2. Dirt blockage solution.

Some sewer pipes will be scaled after a period of use, so that the inner diameter of the pipe becomes thinner and affects the normal sewer discharge, this dredging must use high-pressure water to clean the pipeline, remove the dirt on the inner wall of the pipeline, expand the inner diameter of the sewer pipe, and dredge the sewer. This condition is the most common in kitchen drains.

3. Poor solution to hydraulic conditions.

First of all, all disadvantages should be taken into account from the design of the house, and the drainage pipes should be arranged in such a way as to meet the optimal hydraulic conditions. Therefore, special attention should be paid to: The connection between the drainage riser and the drainage horizontal trunk pipe should be connected by two 90° elbows of 45° or a bending radius of not less than 4 times the pipe diameter.

The drainage pipe should be connected in a straight line as much as possible, and there should be fewer turns. The diameter and slope of the drainage horizontal trunk pipe are appropriately enlarged.

4. The solution to the large settlement of the house.

1) When the drainage pipe passes through the foundation, there should be enough settlement above the top of the pipe, which is generally not less than 150mm.

2) Increase the slope of the drainage outlet pipe to leave a room for maneuver. However, it should be noted that too much slope of the drainage pipeline will scour the pipeline too much and affect the service life of the pipeline, and the slope of the general drainage pipeline shall not be greater than 15°.

3) wait for the house to be capped and then construct the drainage pipe, then the preliminary settlement of the building is completed, and the settlement space is limited in the future, which can reduce the damage of the house settlement to the pipe.

5. Pipe problem solving.

For completed dwellings, if the backwater problem of the ground floor dwelling is very serious due to pipe problems, and the original drainage pipe needs to be rebuilt, then plastic drainage pipe or mechanical centrifugal cast iron pipe should be used.

Answer in the building people often encounter a variety of problems, anti-water is one of them, the problem of sewer backwater is currently many people living in the building will encounter, especially people living on the first floor is most likely to encounter the problem of sewer backwater, in order to help people solve these problems, people must find specific reasons, so as to solve the problem, the following is a specific analysis of the prevention of the first floor of the pipeline backwater method is what? How to solve the problem of backwater on the 2nd floor?

What is the method to prevent water backflow in the pipes on the first floor.

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Join a group chat. Sewer backwater is a common problem faced by residents on the first floor, usually because the upstairs residents do not install sewer shredders, and the garbage that should not be flushed into the sewer is discharged into the sewer pipes, the best way to solve the problem is to ask someone to install independent sewers, which can completely solve the problem of backwater. Before construction, it is necessary to check whether the water pipes and related accessories are in good condition, whether there are damages, cracks and other phenomena, so as to avoid rework after construction.

When installing, it is necessary to consider the thickness of the wall tiles and the thickness of the floor slab, and use as little or no connection accessories as possible under the wall and the ground, so as to reduce the hidden danger of leakage, and the installation of the connecting accessories should be firm and no leakage. When installing the sewer pipe, you should also consider the installation location of the faucet for the washing machine at home, the arrangement of the sewer, etc., and also pay attention to whether the location of the power outlet is appropriate. Or also install check valve, check valve is to rely on the flow of the pipeline medium itself to open or close, mainly to prevent the control of the pipeline medium backflow, so it is called the check valve or reverse flow valve, the medium can only flow in one direction, can only flow out and can not retreat, when the pipeline medium backflow, under the push of the fluid pressure, the valve plate is resisted by the pressure of the fluid.

Contact your side to find the property to deal with.

The property helped pull the upstairs neighbor into a group and said that he agreed to pay compensation, only one said he agreed, and the others did not reply.

The answer to this phenomenon is relatively rare. If it is blocked, it will backflow from the sewer well on the outdoor ground, and this design is designed to prevent water backflow indoors. If there is a backwatering phenomenon, call ** to find a pipeline dredging company for the property, and use a pipeline dredging machine to directly dredge or replace the pipe.

The principle of anti-water: the first floor is an independent sewer, the first floor of the sewer pressure is low or even no pressure, but to the second floor when the outside of the building sewer pipe is estimated to be able to spray up from the manhole cover, not easy to block, because the first floor is lower and the second floor is one floor higher than the first floor. On the second floor and above the second floor, there is one general, so it is relatively easy to reverse water. Residential drainage is generally gravity self-flowing drainage, and sewage is discharged from the sanitary appliances of the house into the drainage riser and then into the drainage trunk.

Finally, it is discharged into the outdoor drainage inspection well. The drainage speed of the general drainage riser is greater than that of the drainage horizontal trunk pipe, when the sewage is discharged to the bottom of the drainage riser and transferred to the drainage horizontal trunk pipe, instantaneous congestion will be generated, and a short period of positive pressure water column is formed at the bottom of the drainage riser, if the hydraulic conditions are not good, (such as the drainage riser and the drainage horizontal trunk pipe are not connected with two 45 elbows, the diameter of the drainage horizontal trunk pipe is small, the slope is small, or when the blockage occurs), the positive pressure water column is relatively high, when the positive pressure water column is higher than the sanitary appliances of the ground floor residence, Sewage overflows from the sanitary appliances of the ground floor dwellings, which is commonly referred to as sewer backwater.

Reasons for rebate:1It is very likely that there is a blockage under the main sewage pipe, and once the sewage is not discharged, the sewage will go back to the nearest outlet from the blockage point, and you have no way to deal with this situation, but to dredge the pipeline company.

Do the math how much it will cost you to renovate your home

I believe that many people have encountered this situation, that is, their home is not blocked, but at this time there will be backwater, so you must find the cause before figuring it out, and only after the reason is found will you know who is responsible. Let's introduce to you who is responsible for the backlash of the sewer on the second floor.

Who is responsible for the backwater in the sewer on the second floor.

This should be determined according to the actual situation, if the residents on the first floor have changed the independent drainage pipes without permission, resulting in the residents on the second floor having backwater, the residents on the first floor need to pay the corresponding responsibility, but if the drainage pipes have not been changed, it is a public facility failure, and the responsibility lies with the property.

The reason for the backwater in the sewer on the second floor.

1. There is a blockage.

It may be that the main sewage pipe is blocked, and then there will be a bad sewage discharge, in this case, there is no way to deal with it, and you have to go directly to the pipeline company to deal with it.

2. The main pipeline is blocked.

If you live on the second floor and the water arrives at your house, it means that the pipes below the second floor can be blocked, which means that its main sewer is blocked.

3. The amount of house subsidence is large.

The slope of the main pipe must reach the standard slope in residential projects, so that the sewage can be added to the self-purification flow rate in the pipeline. In this case, special attention should be paid to the fact that the amount of subsidence of the house will crush the exit pipe, which will lead to poor irrigation.

4. Pipe problems.

Now the material of water pipes is divided into cast iron pipes, which have hard inner walls and poor anti-corrosion, which will lead to poor irrigation. Plastic pipe, its inner wall is smooth and easy to let the dirt hang and accumulate violently, it can be said that its water capacity will be 10% 26% greater than that of cast iron pipe.

Summary: About the second floor sewer who is responsible for the anti-water content will be introduced here, this should be determined according to their actual situation, in order to find the corresponding responsibility. If you want to know more about related knowledge, you can consult Qijia.com.

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The solution to the backwater of the sewer on the second floor of the high-rise: ask someone to dredge and install the anti-reverse valve.

1. If it is a problem with your own pipeline, you can ask someone to dredge it, if you can't solve it by asking someone to dredge it, it is a blockage of the sewage pipe in the public area, and you need to ask the property to dredge. If the new house is within the shelf life, it may be because the house is dislocated due to the settlement of the house, or the pipe is deformed due to the settlement of the earthwork, and the noisy hall can ask the developer to deal with it.

2. Install the check valve. Buy the check valve first, then connect the elbow, short pipe, and check valve in order, and then apply glue to the connection to make it firmly bonded together. After the anti-reflection valve is installed, when the water flow is hidden in the reverse flow of liquid hail, under the action of water pressure, the anti-reverse valve will be resisted, so as to close, preventing the water flow from reversing water.

Sewer backwater causes

1. There is a blockage.

If the main sewage pipe accidentally falls into a hard object, it will lead to blockage for a long time, causing sewage to seep back to the nearest outlet from the blockage point.

2. The amount of subsidence of the house is large

If the construction of the house does not meet the standard, such as the subsidence of the house due to its own weight and other reasons, and the corresponding measures are taken during the construction, the slope of the irrigation outlet pipe will be reduced, and the sewer pipe is prone to backwater.

3. Pipe problem

If the developer uses inferior pipe products when arranging drainage pipes, it is prone to problems such as hanging dirt and corrosion, especially if the cast iron pipe products are used for sand mold irrigation, the phenomenon of water backlash will be more serious. It is recommended to use plastic drainage pipes, mechanism centrifugal cast iron pipes, etc., which are more unimpeded, as long as they are used properly, there is no need to worry about backwater.

Answer: Is there a high probability of anti-water on the second floor, what is the probability of anti-water on the second floor of the high-rise, and it depends on what the pipeline design is. In general, if the design is reasonable and used correctly, then the probability of water reversal is relatively low. If the first floor is an independent sewer, then the second floor is the lowest point of the whole floor pipe, when the bottom of the pipe is blocked or the drainage capacity is insufficient, the sewage in the drainage riser is backlogged, the water level rises, and when it is higher than the second floor, the sewage in the pipe will be poured back from the kitchen sewer pipe on the second floor, the toilet in the bathroom or the floor drain to the second floor.

The main reason for the anti-water and anti-water on the second floor of the high-rise is the pipeline design and construction problems, the pipe diameter is too thin, the ventilation pipe is problematic, the buried pipeline is damaged, there are obstacles in the pipe, the bottom transverse pipe is too long, the bend angle is too sharp, the slope is not enough or even the reverse slope, the distance between the lowest transverse branch pipe and the bottom or bottom transverse pipe of the riser is not up to the specification, the radius of the elbow is too small when the riser turns transverse (the specification is two 45-degree elbows or 4 times the diameter of the large elbow or variable diameter elbow), insufficient drainage capacity and so on.

How to solve the problem of backwater on the 2nd floor 1, if the situation of backwater has occurred, we need to let the property company to solve, generally speaking, it is necessary to use a pipeline dredge to dredge directly, if the leakage is more serious, it is caused by the problem of the pipeline, at this time directly replace the new pipeline, and at the same time make the cross-sectional area of the pipeline slightly larger, and the speed of drainage will also be accelerated. 2. Many pipes will be easy to produce scale after being used for a period of time, and there will be impurities in them, so the pipes must be cleaned regularly, which will also effectively prevent the problem of backwater on the second floor, especially the pipes in the kitchen, which should be cleaned regularly. 3. When designing the community, especially the drainage pipe on the second floor, its angle and pipeline have relevant requirements, generally speaking, it should be designed as straight as possible, so that it is not easy to have the problem of blockage and backwater.

Question: Can the safety check valve avoid backwater?

Usually, the first floor is a separate sewer with low water pressure, so it is not easy to clog. The kitchen sewer on the first floor is backwater, and the first thing to judge is to judgeWhether it is caused by the blockage of the main plexus, I came across a situation becauseThe flux is not enough to produce water similar to chokingThe effect of such wordsExtending the sewer pipes can make a difference.

What should I do if the sewer on the first floor is blocked and the water backs up?

1. If the anti-water isDue to a clogged sewer, that's mainly becauseDredging is not carried out on a regular basisYou can directly find the property company to dredge the pipes, able to solve the trouble of anti-water.

2. Or we canUnclog the sewers yourself at home, with caustic soda dredging, the effect is still very good. We can also boil another pot of hot water before dredging, pour the caustic soda into the drain, and then pour the boiling water directly into it. Basically, the phenomenon of blockage is not particularly serious, or it does not take long, it can be directly dredged.

3. Because the flux is not enough, Bi Zheng loss will produce an effect similar to choking water, in this caseExtend sewer pipes

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Do-it-yourself extension.

In addition, to elaborate, the kitchen sewer backwater caused by the blockage of the sewer pipe, the blockage is also divided into two situations:

1.The kitchen drain is backwater when you use it, and it belongs to your own pipe blockage, so you can dredge it with a small dredging machine.

2.If you are backwater when you don't use water, the main pipe of the whole building is blocked, and the kitchen sewer pipe is easy to form grease, so you may need to ask a professional master to clean the pipe, which is more thorough.

In addition to the above reasons, the hydraulic conditions, the pipes used for the sewer pipe can also affect the drainage of the kitchen sewer:

1.Residential drainage is generally gravity self-flowing drainage, the drainage speed of the drainage riser is greater than that of the drainage horizontal trunk pipe, and when the sewage is discharged to the bottom of the drainage riser and transferred to the drainage horizontal trunk pipe, the drainage speed will be slowed down, especially when the water volume is large, it may cause instantaneous congestion. Sewage forms a short period of positive pressure water column at the bottom of the drainage riser, if the hydraulic conditions of this part are not good, the positive pressure water column is formed relatively high, when the positive pressure water column is higher than the kitchen and bathroom appliances of the ground floor residence, the sewage overflows from the kitchen and bathroom appliances of the ground floor residence, that is, the sewer water is usually said to be the situation of sewer backwater.

This is generally caused by unreasonable drainage design.

2.The inner wall of the pipe can also affect the quality of the drainage. For example, in the past, the drainage pipe of the house usually used sand mold cast iron pipe, the inner wall of this pipe is relatively rough, which is easy to cause dirt "retention", and if the anti-corrosion is not done well, it will eventually lead to rust of the pipe, resulting in poor drainage.

If the problem of water backwater in the ground floor house is very serious because of the pipe problemIt is necessary to renovate the original drainage pipes and replace them with pipes with smooth inner walls that are not easy to hang dirt, and plastic drainage pipes or mechanism centrifugal cast iron pipes are the two most commonly used now.