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The aim of this study was to assess the effects of two fl occulants that are often used to overcome activated sludge bulking problems - aluminium chloride, AlCl 3 , and aluminium sulphate, Al 2 (SO 4(More)
We assessed the toxicity of ammonia ions to Stentor coeruleus and Coleps hirtus (Protozoa) isolated from activated sludge taken from two municipal wastewater treatment plants in southern Poland.(More)