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1)  two steps RO
两级反渗透
1.
Effect of alkli addition in two steps RO purtied water system;
两级反渗透纯水系统投碱效果浅析
2)  two-pass RO system
两级反渗透系统
1.
3 by dose alkali in a two-pass RO system; the formula can be used as a reference for design and debugging of the system to calculate the added alkali in two-pass RO .
本文根据水中碳酸平衡原理分析了反渗透系统产水pH值的变化,得出pH值下降量等于系统对HCO3-透过率的负对数的结果,并导出了在两级反渗透系统中加碱调节pH值至8。
3)  two-pass reverse osmosis
二级反渗透
1.
Applications of the two-pass reverse osmosis technology in electroplating industry;
二级反渗透技术在电镀工业中的应用
2.
Though studying the rate of permeable salt of two-pass reverse osmosis system,the effects of feed water pH value,permeant flux,feed water conductivity on the permeable salt rate of the system are analyzed and the change regular of permeable salt rate along with the three factors is summarized.
以二级反渗透系统的透盐率为研究对象,分析了给水pH值、产水通量、给水电导率对系统透盐率的影响,总结了透盐率随三个因素的变化规律,比较得出了其中给水pH值对透盐率的影响最大的结论,且给水pH值为弱碱性条件下的透盐率最低。
4)  two stage RO
2级反渗透
1.
The first process is a traditional process which consists of pretreatment; two stage ED and IX, the second process consists of pretreatment consists of pretreat; one stage RO and IX, the third process consists of pretreatment; two stage RO.
方案一是一个较传统的工艺,它由预处理、2级电渗析和混床构成;方案二由预处理、1级反渗透和混床构成;方案三由预处理和2级反渗透组成。
5)  first pass RO
一级反渗透
1.
The ultrafiltration and reverse osmosis process are applied for the desalination station,subsequently through the UF,the first pass RO,the second pass RO,then flow to the mixed bed.
脱盐水站采用双膜法水处理工艺,经过超滤、一级反渗透、二级反渗透系统,再经过混床进行深度处理,精脱盐水水量640 m~3/h,出水水质电导率小于0。
6)  twice reverse osmosis
二级反渗透法
1.
Examination of the quality of purified water made by twice reverse osmosis;
二级反渗透法制备纯化水的质量考察
补充资料:低压反渗透膜
分子式:
CAS号:

性质:低压反渗透膜指操作压力为0.7~1.5MPa的反渗透膜,若操作压力为0.3~0.7MPa,称超低压反渗透膜。反渗透过程的操作压力是由水溶液的渗透压和反渗透膜性能决定的,反渗透膜性能好,只要操作压力略高于渗透压,就能得到近似理论计算值的透水量和很高的脱盐率,这是理想的低压反渗透膜。另一类超低压反渗透膜是用于含盐量很低的水溶液,其本身渗透压就很低,因而操作压力也低。当前工业用低压反渗透膜,用于含盐量1×10-3左右的水溶液脱盐,操作压力范围在0.3~2.1MPa,随操作压力降低,透水量成倍减少,脱盐率以百分点降低。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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