removal of coagulant aluminum from water treatment at thailand

removal of coagulant aluminum from water treatment at thailand
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  • Should aluminium coagulants be controlled in water treatment plants?
  • Aluminium exerts undeniable human health effects, so its concentration should be controlled in water treatment plants. The article presents and discusses the results of studies on the influence of selected properties of aluminium coagulants on the concentration of aluminium remaining in the purified water.
  • Does alum affect the pH of coagulation treated water?
  • While comparing the resultant pH of coagulation treated water, it was observed that alum exhibits a different behavior compared to other coagulants. pH of treated water tends to stay stable when alum was used as coagulant, whereas when treated with other coagulants, the pH of treated water increases tremendously.
  • Can alum coagulants remove turbidity from brown water?
  • The brown water with 250NTU turbidity when coagulated with alum and assorted coagulants proved that maximum turbidity removal was witnessed using alum dose of 0.25 g/l at ph 6 with a sedimentation time of 30 min. Choy SY (2016) Performance of conventional starches as natural coagulants for turbidity removal.
  • Which concentration of residual aluminum is deter-mined after coagulation?
  • ally justifiable.The concentration of residual aluminum was also deter-mined in the water after the coagulation process. Analysis of the obtained test results showed that after coagula-tion with sodium aluminate the highest concentrations of residual aluminum were found (Fig. 4) about three times the acceptable concentration in water intende