The specifics of chemical sedimentation of calcium ions from diluted aqueous solutions

Increasing the hardness of natural waters requires introduction mitigation systems in offices and private homes apartments, where it is impossible to implement heating settling water, typical traditional technologies. The efficiency soda - lime softening water conditions low temperatures absence has been studied very little. Therefore, purpose this work was study features under different terms its use household office systems. specifics calcium carbonate formation process during diluted aqueous solutions for home or were researched. At 13 18 °C, significant reagents overconsumption compared stoichiometry, which a negative factor application such conditions. In addition quantity cannot be comparable with obtained effect. Increased 5 times dose reduces total treated only twice. Even increased 10 reduce residual solution lower 0.6 mg-eq/dm3. Also there no clear dependence intensity on ratio components. pH increasing less effective than temperature increasing. sediment also depends changing these parameters. It found that neutral medium at 30 °C initial 8 mg-eq/dm3 single flakes occurred solution. By further heating, number individual constantly increases 70 they even without treatment sodium carbonate. up 8.4 40 accompanied by turbidity, after treating precipitant instantaneous white fine precipitate observed all volume. turbidity particles started temperature. more big hardness. ions are sedimented quite intensively certain between concentrations K = [CO32-, mg-eq] / [Ca2+, determining factor. This especially noticeable range coefficient from 0 15. Further did not provide effect, regardless However, conditions, method can’t used