How to solve the problem of upward backflow of water in kitchen sewer pipe

When the kitchen sewer pipe is up, you can clean the sewer pipe in the following ways:

1, poke and stir method, which is the most direct solution. Since the pipe is blocked, poke the blockage open. If it's a hard object like chopsticks or spoons, you have to hook it out.

2, air pressure method, for less serious congestion, you can use air pressure gas to wash away.

3, water pressure method, the sewer is full of water, press it down with a cork, and then lift it hard, which will form a certain pressure and pumping force, which may wash away the blocked debris.

4, dissolution method, the main reason for the blockage of the sewer pipe is that oil adheres to and accumulates on the inner wall of the pipe, making the pipe narrower and narrower, and finally it is easy to be blocked by finely cut vegetable chips. This is very similar to the process of narrowing blood vessels in patients with viscous blood to embolize stroke. This kind of blockage accounts for the vast majority and can be treated by dissolving fat.

5. If there is a blockage under the main sewage pipe, once the sewage is not discharged smoothly, the sewage will flow back to the nearest water outlet from the blockage point. You can't handle this situation, so you can only contact the dredging company.

Extended data:

There are several reasons why the sewer runs against the water:

First, the corrosion and water leakage of the sewer pipe of the old building may be caused by the corrosion of the original water pipe. Because half of the old houses are buried with cast iron sewer pipes, and the sewage seriously corrodes iron products, it will rot and lead to leakage if buried underground for a long time.

The transformation method is to replace the iron sewer pipe with PVC sewer pipe with better quality and corrosion resistance. If you ask the decoration company to renovate, friends should know the workers, and it is best to know the brand and quality of the sewer pipes used by the workers to avoid secondary renovation. If you transform yourself, you must first measure the size of the sewer pipe and make a dummy connection before the actual installation to prevent the wrong installation.

Second, another common reason for the backflow of sewer pipes is mainly the design problem of sewer pipes, such as improper choice of backflow elbow, or even no backflow elbow. Because the drainage of houses generally depends on gravity drainage, sewage will stay for a period of time when it flows down from the drainage riser into the horizontal drainage pipe. If the amount of sewage and dirt is large, it is easy to cause the horizontal drainage pipe to be blocked instantly, and it is difficult to discharge sewage and dirt for a while. If there is no reverse bend or there is something wrong with the reverse bend design, then the sewage that is difficult to discharge will come up.

The solution is to let workers check whether the diameter of the horizontal pipe is too small or the design is reversed. If it is a problem with the horizontal pipe, you can consider replacing it with a horizontal pipe with a larger diameter or a longer diameter. If the problem is inverted bend, it is necessary to consider installing inverted bend or replacing inverted bend with appropriate caliber and structure.

Third, there is also a reason why the kitchen sewer runs against the water. The inner wall of sewer pipe is rough, which leads to easy accumulation of dirt. In the long run, dirt will block the sewer and cause anti-water. In this case, the friends should clean the sewer pipe, or replace the sewer pipe with smooth inner wall and difficult deposition of dirt.

References:

Baidu encyclopedia-sewer