Newsletter 高速鐵路簡訊 . 交通部高速鐵路工程局
桃園機場捷運車站給排水系統簡介 Briefing of the Water and Drainage System for TIAA MRT Stations
機場捷運車站給排水管線。

捷運車站給排水系統與車站旅客環境、安全息息相關,舉凡空調設備、衛生設備及消防設備,都需要有良好的給排水設計。
給水系統一般可分為直接給水及間接給水,倘自來水管供應之水壓及水量可以滿足用戶設備所需,即採直接供水方式,若無法達到所需水壓及水量,則採間接給水方式。間接給水方式又可分為重力槽給水、泵浦給水及壓力槽給水。機場捷運車站給水系統係提供衛生設備、空調設備、消防設備及植栽灌溉等用水,因捷運車站之型式包含有高架、平面及地下車站,因此其給水方式將依捷運車站之型式並考量當地自來水單位供應的水壓狀況來決定採直接供水、間接供水或兩者併用,目前車站之給水方式多採間接給水之泵浦給水方式。
一般車站排水系統可分為污水、廢水及雨水等排水,其排放方式又分為重力排水、機械式排水及間接排水,原則上地面以上排水採重力排水,地面以下則採機械式排水。污水排放包含廁所、洗手台、拖布盆、廁所地板落水頭等之排水,係排放至衛生下水道或設置污水處理設施;廢水排放包含空調設備、冷氣機、除濕機、隧道、出入口截水溝及機房之地板落水頭等排水,一般皆集中至車站集水坑再排放至公共下水道。雨水排水一般皆設置獨立排水管路,可回收後利用於植栽灌溉或排放至公共下水道。

The water supply and drainage system of MRT stations are closely related to the station environment and even concerns passenger safety. Everything from air conditioning, sanitary equipment to fire protection equipment all rely on a greatly designed drainage system.
There are two types of water supply systems, the direct water supply system and indirect water supply system. If the water pressure and yield from piped water can satisfy end-equipment needs, it is defined as direct water supply system; conversely, the indirect water supply system. The indirect system includes the gravity tank water supply, pumped water supply and pressure tank water supply. The water supply systems of TIAA MRT stations are used in sanitary equipment, air conditioning system fire protection system and irrigation of plants. Due to different station structure designs, including elevated, plane and underground, water supply measures depend both on the station design and also the water supply condition originating from each local water departments. Of all TIAA MRT stations, pumped water supply is currently used most frequently.
The water drainage systems of general stations include sewage, waste water and rainwater drainage and methods used are gravity drainage, mechanical drainage and indirect drainage. Generally, the gravity drainage method is used for above ground and mechanical drainage is used for underground areas. Sewage include water from toilets, sinks, mop basins, floor pipes, etc. and is usually discharged into the sanitary drain or went through sewage treatment system. Waste water include water from the air conditioning systems, dehumidifiers, tunnels, entrance/exit gutters, drains from mechanical rooms, etc. and is usually gathered in a central pit and then discharged into a public sewer. As for rainwater, there is usually an independent drainage system which the water can be recycled for irrigation or also discharged into the public sewer.

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