非碳酸盐碱度对石灰处理二级排放水的影响

The influence of non-carbonate alkalinity on secondary drainage treatment by using lime

介绍了城市污水处理厂二级排放水碱度和硬度的特点,分析了非碳酸盐碱度对石灰软化处理系统石灰加药量、硫酸加药量、出水残留碱度和硬度的影响。指出在石灰软化处理城市污水处理厂二级排放水过程中,不能忽略非碳酸盐碱度的影响。

The alkalinity and hardness characteristics of secondary drainage from municipal sewage plant were introduced. The influence of non-carbonate alkalinity on the lime required dosage,the sulfuric acid required dosage,and the rudimental alkalinity and the hardness of the output water in lime softening treatment system was analyzed. It is pointed out that in the lime softening treatment process of secondary drainage from municipal sewage plant,the influence of non-carbonate alkalinity can not be neglected.