Drainage engineering is a project to remove human domestic sewage, various production wastewater and excess surface water. It consists of drainage pipeline system (or channel), sewage treatment plant and final treatment facilities. Usually includes pumping facilities (such as drainage pumping stations).
1, drainage pipeline system refers to the pipe network for collecting and conveying wastewater (sewage), including confluence pipeline system and shunt pipeline system.
2. Sewage treatment plants include sedimentation tanks, grit chambers, aeration tanks, biofilters, clarification tanks and other facilities, as well as pumping stations, laboratories, sludge dewatering rooms, repair plants and other buildings. The overall goal of wastewater treatment is to remove suspended solids and increase oxygen consumption, and sometimes it will be disinfected and further treated.
3. Final treatment facilities. According to different drainage objects, there are pumps or other water lifting machines to discharge the wastewater treated by the treatment plant and meeting the specified discharge requirements into water or land.
Extended data
It consists of water supply source, water intake structure, raw water pipeline, water treatment plant, water supply pipe network, etc. It has the functions of collecting and transporting raw water and improving water quality.
1, and the water supply sources are surface water, groundwater and recycled water.
2. Water intake structures include surface water intake structures and groundwater intake structures.
Baidu Encyclopedia-Water Supply and Drainage Science and Engineering