水厂加碱调节pH值试验研究

Research on dosing alkali to adjusting pH in water plant

对于低碱度、低 pH 值的原水,在水处理过程中通常投加碱调节剂,以提高出水的碱度和 pH 值,从而增强出水的化学稳定性。本文通过烧杯搅拌试验、中试和生产性试验,对三种碱调节剂—石灰、氢氧化钠、碳酸钠进行了对比试验,以了解三种不同碱剂的投加效果,同时对三种碱剂的投加成本进行了对比分析。

The pH value of raw water with low alkalinity can be increased by adding alkali in water treatment to improve chemic stability. The adjusting effect of pH value was researched by pilot and productive experiment through adding three kinds of alkali regulator respectively, lime, NaOH and Na2CO3. The dosing cost of alkali was estimated and compared.