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Anonymous users2024-01-24If it is not possible according to the requirements of national regulations, rainwater and sewage are separated, rainwater can be directly discharged into the river, and wastewater only needs to be treated before it can be discharged into the river nature, so rainwater and sewage cannot be combined, but your situation is that rainwater is discharged to the sewage pipe, so the impact is relatively small.
Yes, it's not a problem, just make a slight slope so that there is no dirt in it.
It cannot be changed, one of the two calibers is not the same, it is necessary to change small to large, it is easy to block, even if the two calibers are the same, the reservoir is not the same, which is not conducive to urban sewage discharge.
No need to do it. What must be done is that the sewer end of the water pipe should be made an exhaust pipe. In this case, air resistance will occur when draining water.
Since the plumbing of the bathroom is arranged by the developer, the building is not as good as the general bungalow, and there are people on the upper and lower floors to live. However, if there is really an irrational phenomenon, the toilet drain in the bathroom can be appropriately modified. >>>More