摘要
采用了药剂软化法,即向水样中投加碳酸钠,并煮沸,对自来水硬度进行软化。考察了药剂软化效率的主要影响因素:药剂量、温度、时间、酸碱度。结果表明:饮用水硬度软化效率随药剂量、温度以及时间的增加而提高;软化效率随酸碱度的增大呈先提高后下降的趋势。最佳软化效率的条件为:100mL的自来水水样,药剂量为0.021g,温度100℃,时间10min,pH值为11。此条件下软化效率为94.2%。
Pharmacy-method was used, putting appropriate medicament into water sample and boiling, to make the hardness of the tap water soften. The main factors such as drug dose, temperature, time and pH, which influenced the pharmacy softening efficiency, were inspected, The results showed that the softening efficiency increased with the increasing of the drug dose, temperature and time; the softening efficiency increased with increasing of pH at first, then decreased with the increasing of pH. The softening efficiency could reach 94.2% under the best conditions when water sample was 100ml, medicine close was 0.021 g, temperature was 100 ℃, reaction time was 10 minutes, and pH was 11.
关键词
生活饮用水
水硬度
药剂软化
Drinking water
Water hardness
Pharmacy softening
