【 Weak current College 】 community water supply and drainage and hot water, drinking-water supply section VI

This section describes the types and standards for drinking water, drinking water preparation, water supply and other content, learning to understand better the attention focused on the supply of drinking water. Drinking water supply of content from the system, categorized in part building water supply system, especially as the city facilities and the continuing development of living standards and an "drinking water" has walked into the millions.　　At present, the drinking water quality standards have been implemented and is in the process of developing the water quality standards for drinking water.　　1. drinking water types and standards 1. drinking water type drinking water supply of the type there are two kinds, one kind is the water supply system, the other cold drinks water supply system. 2. drinking water standards (1) drinking water quantity fixed
Water quantity of quota should be based on the nature of the building or the nature of labour as well as the areas of climate conditions, according to the equipment and facilities management of schedules 5 to select. (2) drinking water quality
A variety of drinking water must conform to current standards for drinking water quality. (3) water temperature ① water: water after burning to 100 degrees centigrade and lasts 3 minutes, calculation of temperature with 100 ℃. ② temperature warm water: calculation using 50 ℃ ~ 55 ℃. ③ unboiled water: typically 10 ℃ ~ 30 ℃. 　　④ cold drink water: specific temperature see the equipment and facilities management (Liu, Wang Wei yan editor-in-Chief, telecommunications press) Schedule 5. Second, water preparation 1. water preparation ① direct heating method, use of the heat source as coal, oil, gas and electricity. ② preparation using htm indirect heating hot water. 　　Both are concentrated preparation of boiling water.　　In Office buildings, research building and laboratories, a small electric water heater, also prepared cold drink water, are distributed by way of preparation of boiling water. 2. cold drink water preparation cold drink water of many varieties, but conventional production methods have the following. ① tap water to the boil, then cool-water temperature. ② by tap water purification treatment after the water heater heating and water temperature. ③ tap coal after direct supply user or water points. ④ natural mineral water obtained from underground deep cycle of groundwater. ⑤ distilled water is heated by water vapour, steam condensation. ⑥ pure water through the depth of the water conditioning, primary processing, reprocessing, etc. ⑦ active water is electric, ultrasound, magnetic or laser and water-activated. 　　⑧ ion water is tap water by filtration, adsorption and ion exchange, ionization and sterilization process, such as separating out the alkaline ionized water for drinking, and acidic Ionic water for beauty.　　3. drinking water supply modes 1. boiling water concentrated preparation of centralized supply of preparation in boiling water, people between centrally with container for water to drink.　　2. water preparation of the consolidated source dispersion dispersion supply in construction put htm conveying to each layer, and then set each layer of water between the preparation of hot water.　　3. boiling water concentration in the water supply in the preparation of scattered uniformly through the preparation of hot water to boiling water intake pipe transportation, this system on the pipeline material requirements are higher, make sure that the water is not contaminated. 4. cold drink water concentrate supply with cold drinks prepared by dispersed water concentrated preparation, through pipelines to water points, most used in schools, General Stadium (Museum), station, dock, cinema and the walking Street and other mobility more focused public places