What is the composition and role of the building drainage system?

Building water supply system mainly consists of

Low-level tank (water storage),

Water pump (water transmission power),

Piping system (water distribution and delivery),

High-level tank (water storage and pressure stabilization),

Control valves (regulating and controlling the water use),

Heat exchanger (heating cold water into hot water),

Water recycling pump (ensure the timely supply of hot water),

Water equipment and appliances.

Hot water circulation pump (to ensure the timely supply of hot water),

Water equipment and appliances and other components.

The above is the water supply system

Below is the drainage system

1, the classification of the drainage system

Building drainage system can be divided into three categories of drainage system according to the nature of its discharge of domestic sewage, production of wastewater, rainwater, but also according to the nature of the sewage and the state of the city's drainage system, the nature of the domestic and production of wastewater with the nature of the merger. When the nature of the difference is large, can not use the combined flow system.

2, the composition of the building drainage system

Drainage systems strive to be brief, the installation of a correct and firm, non-seepage and no leakage, so that the pipeline operation is normal, it is usually composed of the following parts. Drainage system consists of sanitary appliances, drainage pipes, clearing equipment, pumping equipment, ventilation piping system and local sewage treatment system.

1) sanitary ware: sanitary ware is the starting point of the drainage system within the building, used to meet a variety of hygiene requirements in daily life and the production process, the collection and elimination of sewage and waste water equipment. Including washbasin, washbasin, laundry basin, washbasin, bathtub, floor drain, etc..

2) Drainage pipes: by connecting the sanitary ware drainpipe, cross-branch pipe, riser, drainpipe, and the main trunk pipe.

3) clearing equipment: clearing equipment on the drain pipe are inspection wells, clearing ports and ground sweeping ports. Outdoor pipe clearance equipment is the inspection well. Clearance equipment is mainly used as unclogging the drain pipe.

4) pumping equipment: when the drainage can not be gravity flow to the outdoor drainage pipe, must set up local sewage pumping equipment to remove internal sewage. Commonly used pumping equipment are sewage pumps, submersible pumps, jet pumps, hand pumps and air pressure water conveyor.

5) ventilation pipe system: ventilation pipe is connected to the drainage pipe system is a system, but the pipe system is not water, there is a complementary air to strengthen the drainage pipe system within the air circulation flow and thus control the function of the pressure change, to prevent sanitary appliances, water seal damage, so that the piping system of odors and harmful gases emitted into the atmosphere.

6) local sewage treatment system: when the building's internal sewage is not allowed to be directly discharged into the municipal drainage network or water body without treatment, there must be a local sewage treatment system.