The construction of drainage system in general by the waste water from water, drainage pipe, ventilation pipe, dredge structures, lifting equipment, local sewage treatment structures etc..
1. Sewage water receiving device. The waste water receiving device is at the starting end of the drainage system, water and wastewater will be used to bear the container after use, waste discharge to drainage system, mainly refers to a variety of sanitary ware, collecting and removing industrial wastewater equipment etc..
2. Drainage pipe. The drainage pipe drainage equipment, drainage and drainage pipe, pipe buried in the underground drainage pipe and exhaust discharge pipe etc., its effect is the sewage (waste) water quickly and safely discharged.
3. Vent pipe. A vent pipe is a pipe communicated with the atmosphere in a drainage pipe system. The vent pipe is sanitary appliances drainage, air supply system needs to change its internal drainage pipe, reducing pressure, prevent seal damage of sanitary ware, so that water flow drainage system; the odor and harmful gases in the exhaust to the atmosphere; the piping often convection between fresh air and exhaust gas reduce the waste gas in the pipeline, causing corrosion.
4. Cleaning equipment. The impurities in the water, easy to plug the pipeline, in order to clear the building interior drainage, ensure smooth drainage, drainage system in set clean mouth, check, cross check wells dry indoor buried pipes on the clearing structures etc..
5. Sewage lifting equipment. Civil construction of the basement, civil and industrial buildings and other buildings in the waste water can not be self to the outside row, need to set up sewage lifting equipment, sewage lifting equipment installed in the sewage pump (pump group). The inside of the building waste water lifting includes a sewage pump selection, sewage collection pool (water room) and determine the design volume of sewage pumping station, sewage pumps are submersible pump, liquid pump and horizontal centrifugal pump.
6. Local treatment structures. When the indoor sewage treatment is not allowed to be directly discharged into the urban drainage system or water body should be set up local treatment structures. The commonly used local water treatment structures are septic tanks, oil wells and cooling tank.
