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      Question

      Which chemical is commonly used in the

      tertiary treatment process for phosphorus removal?
      A Sodium hypochlorite Correct Answer Incorrect Answer
      B Hydrogen peroxide Correct Answer Incorrect Answer
      C Aluminium sulfate (Alum) Correct Answer Incorrect Answer
      D Calcium carbonate Correct Answer Incorrect Answer

      Solution

      Aluminium sulfate (Alum) is often used in the chemical precipitation process to remove phosphorus by forming an insoluble precipitate called aluminium phosphate.

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