Category:catering food
Question:
how long the operation of water supply tap handle production of tap water! Relevant data need to thank
Answer:
tap water plant in the main process is as follows:
1, water: In the river, river, stream the appropriate place to establish room for water, drilling wells for water or directly from the river the stream water. Water water water meets the required hygiene standards, lead, mercury, cadmium and other harmful substances can not exceed the required standards. The more serious water pollution would make the cost of water works system, the higher the water.
2, exposure, violence gas: In the pool water using mechanical approach to the full roll, let the water as much exposure to sunlight and air, making it fully exposed sharp gas, the role and use of photochemical oxidation of organic matter to the water and other harmful material decomposition.
3, add alum: in the water by adding alum, alum flocculation in water to form complex, accelerate the precipitation of impurities in the water.
4, precipitation: Let alum has been added in the settling tank full of water, sediment, so that the water impurities and water separation, the last into the clear pool.
5, chlorination disinfection: the election of tap water in the factory by adding chlorine to kill the water bacteria, viruses and so on. Are generally used in the past, the pool of water by adding bleach method, now generally in force in the outlet pipe into the chlorine filled, so that there is a certain amount of chlorine dissolved in water, tap water to reach the user when there is a certain degree of residual chlorine, so that bacteria, viruses and other harmful pathogenic micro-organisms can not survive in tap water to ensure water quality standards of health.
Chinese:自来水
类别: 餐饮食品
问题:
自来水供应 自来水长如何运作处理 生产自来水！需相关资料 谢谢
回答:
自来水厂生产自来水的主要工艺过程如下：
1、取水：在江、河、溪边适当地方建立取水机房，打井取水或直接从江河溪中取水。要求水质符合自来水取水的卫生标准，铅、汞、镉等对人体有害物质不能超过规定标准。水源污染越严重就会使自来水厂的制水成本越高。
2、曝光、暴气：在水池中用机械的方法让水充分翻滚，让水尽量多地接触阳光和空气，让它充分曝光暴气，利用光化学作用和氧化作用让水中的有机物和其它有害物质分解。
3、加矾：在水中加入明矾，明矾在水中形成絮状络合物，加快水中杂质的沉淀。
4、沉淀：让已经加矾的水在沉淀池中充分沉淀，使水中杂质与水分离，{zh1}流入清水池。
5、加氯sj：在出厂的选自来水中加入氯杀灭水中xj、病毒等。过去一般是用在清水池中加入漂白粉的方法，现在一般是在出水口管路中强行充入氯气，让水中溶解有一定数量的氯，自来水到达用户时还有一定的余氯，使xj、病毒等有害致病微生物无法在自来水中生存，保证自来水的卫生质量标准。