文档介绍：摘要
随着我国社会主义现代化建设的深入进行、城市化进程的加快以及人民生活水平的不断提高,不仅用水量将迅速增加,而且对水质的要求也会越来越高。
而人们对水的认识是随着制水工艺的发展而逐步深化的,早期把蒸馏水当做纯水,在25℃~·cm,总固形物含量高达1~5mg/L。随着科技的发展,许多行业如医院、化工,尤其是电子行业对水的质量提出了越来越高的要求。只有水质指标更高的高纯水或超纯水才能满足需求。所谓的高纯水或超纯水是指25℃时电阻率不低于18 MΩ·cm、总固形物含量不超过每升数十维克的水,而且其中微生物、溶解气体、胶体及固体颗粒物质的含量也接近于零。
水处理是对水质成分的变革,亦即采用各种必要的物理、化学或生物学的工艺技术,将水中的污染物质分离出去,使水质达到所要求水质标准的一种加工净化过程。按照原水水质性质类别的不同,水处理通常分为给水处理和污(废)水处理两大类。近些年来,由于天然水源水质不断污染以及污水资源化的逐步实施,使原来两类水处理工艺技术的隶属关系正在模糊,从而也使两类水处理技术的界限日渐淡化。
本设计方案是以反渗透膜技术为核心,辅以合适的前处理手段和后处理措施制取高质量桶装饮用纯水以及去离子水的完整系统。整个纯水系统各设备相互补充、相辅相成,系统设计先进、运行可靠、操作简单、监控自动化程度高。
关键词:水处理工艺;水质;反渗透膜技术;纯水;
Abstract
With the deepening of China's socialist modernization carried out to speed up the urbanization process, as well as the continuous improvement of people's living standard, not only water use will increase quickly, but also increasing the demand for water.
And people's understanding of water craft along with the development of water gradually deepening, early to distilled water as pure water, at 25 ℃, the resistivity is usually only ~ • cm, the total solids content of up to 1 ~ 5mg / L. With the development of technology, many industries such as hospitals, chemical industry, especially the electronics industry for the quality of water higher and higher requirements. Only a higher water quality indicators of high water, or ultra-pure water in order to meet demand. The so-called high-pure water or ultra-pure water is 25 ℃, the resistivity of not less than 18 MΩ• cm, the total solids content of no more than tens of Vick per liter of water,and these anisms, dissolved gases, colloidal and solid particulate matter content is also close to zero.
Water is a change in water ponent, which is necessary to use a variety of physical, chemical or biological process technology, will separate contaminants in water to make the water reach the required water quality standards of a machining process of purification. In accordance with the nature of raw water types o