The basic composition of the building water supply and drainage systems are water supply system, hot water system, sewage system, wastewater system, rainwater system, air-conditioning condensate system, fire water system.
1, water supply system: usually the case are referred to as a substitute for tap water.
2, hot water system: including solar hot water system, hot water circulation system.
3, sewage system: generally refers to the drainage of the bathroom, collected and discharged to the municipal sewage network after preliminary treatment in the septic tank in this area.
4, wastewater system: generally refers to the drainage in addition to the bathroom, some buildings will take the "combined sewage and waste water" way to discharge wastewater, septic tanks or sewage treatment stations in the region for unified treatment and then discharged to the municipal sewage network. In some areas, the treated wastewater will be recycled (i.e., water).
5. Rainwater system: Generally, the rainwater in this area will be collected and discharged to the surface or centralized and discharged to the municipal rainwater network. And some areas will be treated rainwater recycling (i.e. water).
6, air-conditioning condensate system: as the name suggests, the condensate produced by the air-conditioning, generally take the way of direct discharge, collected and discharged to the region's drainage mains and so on.
7, fire water system: in the building drainage fire water system is a very large weight, building drainage is generally divided into "life drainage" and "fire drainage", fire water system is generally divided into fire hydrant systems, automatic Sprinkler system, water cannon system, water curtain system (similar to spray), water spray system (similar to spray), foam system.