carbonate hardness

This paper suggests that although relatively more complicated, this technique can remove the carbonate hardness, and SiO2, etc., and reduce the suspended substances in water, BOD5, and the turbidity of phosphor, etc.

认为：该工艺虽较复杂，但可有效去除碳酸盐硬度、SiO2等，降低水中的悬浮物、BOD5、磷浊度等。

Some effective methods have been given, for instance, decreasing the carbonate's hardness for the scale of recirculated water, thermal deoxidization, adding inhibitor and covering the metal surface with coating materials for the corrosion control of the system.

对于循环水结垢应采用降低循环水中的碳酸盐硬度和加阻垢剂；对于循环水系统的腐蚀可采用热力除氧、投加缓蚀剂及使用涂料覆盖于金属表面等方法。

Study on a new type of utmost carbonate hardness measuring instrument and its evaluation method

一种新型极限碳酸盐硬度测定仪及评价方法研究