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Table 5 Water hardness agents removal efficiency

From: Evaluation of the efficiency of ceramic filters for water treatment in Kambata Tabaro zone, southern Ethiopia

Filter code Concentration of Mg2+, Ca2+, So 2−4 , Po 3−4 before filtration (ppm) Concentration of Mg2+, Ca2+, So 2−4 , Po 3−4 after filtration (ppm) Percent removal efficiency (%)
Mg2+ Ca2+ So 2−4 Po 3−4 Mg2+ Ca2+ So 2−4 Po 3−4 Mg2+ Ca2+ So 2−4 Po 3−4
1 19.75 56.25 46 5.4 13 39 8 2.2 34.18 30.1 82.6 59.3
2 19.75 56.25 46 5.4 9.5 28.5 6 2.6 51.89 49.3 86.96 51.9
3 19.75 56.25 46 5.4 5.6 16.8 2.5 0.5 71.65 70.1 94.6 90.7
4 19.75 56.25 46 5.4 11.5 34.5 12 0.52 41.77 38.7 73.9 90.4
5 19.75 56.25 46 5.4 7.8 23.55 4 0.69 60.51 58.1 91.3 87.2
6 19.75 56.25 46 5.4 4.6 13.87 1.5 2.40 76.71 75.3 96.7 55.6
7 19.75 56.25 46 5.4 10.5 30.5 7 0.84 46.84 45.8 84.8 84.4
8 19.75 56.25 46 5.4 6.6 20.2 3.4 1.4 66.58 64.1 92.6 74.1
9 19.75 56.25 46 5.4 3.75 11.2 1.2 0.40 81.01 80.1 97.4 92.6