There is a bathroom on the first floor of the villa. How to discharge sewage?

Generally speaking, when it comes to sewage risers, our response is that places without sewers need basements to solve the drainage problem. The water in the basement is lifted to the main sewer upstairs, and then flows into the municipal sewage pipeline together with the sewage in the main sewer, thus solving the drainage problem in the basement.

Then, why do places like high floors need sewage risers? Can't the sewage upstairs be drained from top to bottom by gravity?

What it says above is normal. Generally, when building or decorating, developers will reserve pipelines. Generally, rooms that need drainage will have reserved sewage pipes, and sewage can flow down the river.

In these cases where we want to add toilets or rebuild toilets, we don't have sewer pipes. If we don't want to pry open the floor and re-lay the pipes, we need to use sewage risers to solve the drainage in the basement.

The principle is to transport the sewage from the new place to the nearest main sewage pipeline through the power of the sewage hoist, so that the workload is relatively small and the original structure of the house is destroyed as little as possible.

In the case of adding a new toilet, the quietness and continuity of drainage are worthy of our attention. Because it is installed on the ground, the sound of the machine running will spread more widely than in the pit, so the mute effect of the machine itself is very important. At this time, oil-cooled sewage elevator can be considered to solve the problem of silent drainage. 1000ml motor wrapped in mineral oil will reduce the noise a lot and will not disturb neighbors or offices around.

In the case of new toilets, high-rise toilets are also places where there is no sewer. At this time, sewage riser is needed to solve the problem.