水质硬度

水质硬度测定用复合硬度指示剂的研究应用

Determination of water hardness with a complex water hardness indicator

水质硬度对煤和蒙脱石颗粒分散行为的影响

Effects of Water Hardness on the Dispersion of Fine Coal and Montmorillonite

反渗透膜进水预处理及水质硬度过大的对策

Pretreatment for reverse osmosis membranes and the countermeasure against hard-water

水质硬度对选煤厂循环水澄清的影响

Influence of Water Hardness on Clarification of Circulating Water in Coal Processing Plant

随着水质硬度的上升，浊点下降。

It was found that the cloud point was decreased with the water hardness increasing .

水质硬度测定仪的研制及应用

Development and Application of Water Hardness Analyzer

考察了水质硬度、温度、流速对结垢过程的影响。

The influences of cold water hardness , temperature , velocity on fouling formation were experimentally studied .

瓶装保健酒产生沉淀的原因有：（1）水质硬度大；

The causations of precipitate in bottled health wine were as follows : 1 . high water hardness ;

水质硬度自动在线监控系统是在生产实践中逐步发展和完善的自动化控制系统。

The automatic online monitoring system of the hardness of water quality is a automatic control system which has been developed and perfected progressively in the production practice .

容量法测定水质总硬度时对分析结果误差的分析

Analysis of the Error of Result by Volumetry in Determination of Total Water Hardness

稳健统计法在水质总硬度检测比对中的应用

Comparison test of total hardness of the ground water quality by robust statistical techniques

络合滴定测定水质总硬度的误差来源与消除

Study on the End Point Error of Determination of Water Hardness by Using Complexometric Titration

运用离子色谱法间接测定水质总硬度。

A method of determination hardness in water by Ion Chromatography was introduced in the paper .

随着碱性水处理技术的发展和循环水浓缩倍数的不断提高，循环水水质向高硬度、高碱度、高pH值，甚至高温的方向发展，进一步增加了水质控制的难度。

With the development of water alkaline treatment technology and the increase of concentration times , the quality of circulating water tend to become high hardness , high alkalinity , high pH value and even high temperature , which deepened the difficulty in controlling these problems .

已风化矿物粒度越小，风化程度越高，离子越易溶出，易造成水质的总硬度、硫酸盐污染；

The less minerals grain-size is , the higher weathering degree is , ions solve easier and it would produces pollution of acid , hardness , sulfate ;

饮用水的黄水现象，在水质碱度和硬度较低的地区时有发生，在流速较低，水力停留时间较长的供水管网末梢也时常发生。

" Red water " phenomenon occurs in regions with low alkalinity and low water hardness . It also happened in the tips of water distribution system in which water velocity is low and stagnant time is long .

工业循环冷却水水质分析中的硬度和碱度测定

Measurement of Hardness and Alkalinity in Water Quality Analysis of Industrial Circulation Cooling Water