The building water supply and drainage system is the task, will produce sanitary appliances and production equipment in building sewage and wastewater, landed on the roof of the rain water collected after smoothly discharged into the outdoor drainage system, sewage treatment plants or rows of people for comprehensive utilization.
According to the type of waste water, the building drainage system can be divided into three categories:
1. Living drainage system. The utility model can be used for eliminating the waste water, such as toilet, bath, toilet, etc., which are generated by people's daily life in residential buildings, public buildings and factories. In order to make effective use of water resources, it can be further divided into domestic sewage drainage system and domestic waste water drainage system. Sewage contains large amounts of organic impurities and bacteria, the pollution degree is heavy, be discharged into the city sewage treatment plant, and then discharged to the river or to the comprehensive utilization of wastewater; pollution degree is light, after appropriate treatment can be used in buildings or residential quarters, used to flush the toilet, watering Road, green lawn vegetation, light water can reduce environmental pollution, increase the utilization of water resources.
2. Industrial waste water drainage system. Used to eliminate waste water produced in the production process. Due to a wide variety of industrial production, the production process is different, the water quality is extremely complex, for the effective use of water resources, according to the degree of pollution can be divided into drainage production sewage drainage system and production wastewater system. The production of sewage pollution is heavy, need to go through the factory to deal with their own, to achieve discharge standards and then discharged to the outdoor drainage system. Production waste water pollution is relatively light, can be recycled or discharged after a simple treatment.
3. Storm water drainage system. Used to collect rainwater on the roof to exclude and melting snow.
