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Hardness cations are ubiquitous and abundant in source water, while the effect of hardness on the performance of coagulation for dissolved organic matter (DOM) removal in water treatment remains unclear due to the limitation of methods that can characterise the subtle interactions between DOM, coagulant and hardness cations. This work quantified the competition between coagulant Al3+ and hardness...
This study developed a novel KMnO 4 –Fe(II) process to remove the cells of Microcystis aeruginosa, and the mechanisms involved in have been investigated. At KMnO 4 doses of 0–10.0 μM, the KMnO 4 –Fe(II) process showed 23.4–53.3% higher efficiency than the KMnO 4 –Fe(III) process did. This was first attributed to the moderate pre-oxidation of M. aeruginosa by KMnO ...
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