It is widely applied in drinking water purification, domestic sewage and industrial wastewater treatment.
Index name | index | ||
First Grade | |||
Drinking water % | Non drinking water % | ||
alumina (AL2O3) mass fraction/%≥ | 28-30 | 27-29.0 | |
Basicity/% | 40-90 | 40-90 | |
density (20oC)/(g/cm3) ≥ | 1.12 | 1.12 | |
Mass fraction of water insolubles /% ≤ | 1.0 | 1.5 | |
PH(1% aqueous solution) | 3.5-5.0 | 3.5-5.0 | |
arsenic (As) mass fraction /% ≤ | 0.005 | 0.005 | |
lead (Pb) mass fraction /% ≤ | 0.001 | 0.003 | |
cadmium (Cd) mass fraction /% ≤ | 0.002 | 0.002 | |
mercury (Hg) mass fraction /% ≤ | 0.00001 | 0.00001 | |
Six valence chromium(Cr+6) mass fraction /% ≤ | 0.005 | 0.005 |