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Anonymous users2024-01-23Sewers are a type of urban public facility that has been used as early as the ancient Roman period. The prototype of modern sewers originated in Paris, France, and Paris still has the largest urban sewer system in the world. Generally speaking, the sewer system is used to collect and discharge domestic wastewater generated by the city and industrial wastewater generated on the industrial sewer product.
Urban rainfall is counted as urban wastewater for the time being).
Sewer noise is generally caused by the low-frequency noise caused by the water hitting the pipe wall and the high-frequency noise of the large water flow during flushing. The root cause of noise in household sewer pipes is the main source of noise caused by the vibration caused by the water flow hitting the pipe wall. The sound is amplified by repeated refraction in the pipe, and the most likely location for household pipe noise is the elbow of the pipe, and the straight pipe wall is the culprit of sound wave reflection and resonance. >>>More
Some rats can dive, I tried to put the rats in the cage into the water to dimmer, and they didn't die after a while, and it took a long time to die, indicating that the rats will hold their breath like people. There is also a water rat, also called a water rat, which has a certain diving ability, but cannot live in the water for a long time, and the water rat breathes by the lungs.
The culprit of the easy blockage of the kitchen drain is oil! >>>More
The reason is that the pressure is low in rainy weather, the air pressure in the ground is high, and the odor flows from high pressure to low pressure. >>>More
: The sound will be loud due to the fast flow of water, pipe vibration, etc. If the cause cannot be eliminated, the only way to do it is to insulation.