To solve the question regarding the removal of permanent hardness in water, we can follow these steps:1. Understanding Permanent Hardness: - Permanent hardness in water is primarily caused by the presence of dissolved calci
perched permanent ground water 常静滞地下水 permanent hard water 永久硬水 permanent memory permanent storage 永久性存储器 dry hardness 干态硬度 相似单词 hardness n.[U] 坚硬,困难,严厉,勇气 Permanent a. 永久的,不变的,固定的,持久的 n. 电烫的头发 a. 永久的 permanent adj. 1. 永久的,...
permanent-hardness-of-water网络水的永久硬度网络释义 1. 水的永久硬度 为永久硬度,permanent... ... ) permanent hardness of water 永久硬度 ) permanent hardness of water 水的永久硬度 ... www.dictall.com|基于1 个网页© 2024 Microsoft 隐私声明和 Cookie 法律声明 广告 帮助 反馈...
chem hardness of water that cannot be removed by boiling as it results mainly from the presence of calcium and magnesium chlorides and sulphatesDiscover More Example Sentences The total hardness of water is therefore commonly made up of temporary and permanent hardness. From Project Gutenberg Boiling...
Temporary hardness is less detrimental because it can be eliminated through boiling. However, permanent hardness can be removed only by means of chemical treatment. Permanent hardness in water can damage piping, boilers as well as other pressurized systems. Hard water tends to form scale deposits th...
Twitter Google Share on Facebook permanent hardness Encyclopedia n (Chemistry)chemhardness of water that cannot be removed by boiling as it results mainly from the presence of calcium and magnesium chlorides and sulphates Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © Ha...
The meaning of PERMANENT HARDNESS is the part of the total hardness of water that persists after boiling —distinguished from temporary hardness.
Any remaining solid that does not settle can be removed using a filtration process. This method of treating hard water is known as Clark's process. 5. Conclusion: The treatment of permanent hard water with slaked lime effectively removes hardness by precipitating calcium carbonate and magnesium ...
4) permanent hardness of water 永久硬度5) permanent hardness 为永久硬度6) permanent hardness 永久硬度<冶>补充资料:为永久硬度 分子式:CAS号:性质:又称为永久硬度。由硫酸钙、氯化钙等微溶于水,加热水时不产生沉淀的无机化合物构成的水硬度。 说明:补充资料仅用于学习参考,请勿用于其它任何用途。
Optimum operation conditions were determined as initial pH 7.1, resin dose 8 g dry resin•L-1, temperature 25 oC, contact time of 360 min, and in those conditions the retention capacity for the Ca2+ ions is 17.18 mg•g-1 that corresponds to a removal efficiency equal to 85.7%.Bogdan...