water treatment chemicals and decolouring agents arron in brazil

water treatment chemicals and decolouring agents arron in brazil
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  • Does sludge contaminate drinking water treatment plants in Rio de Janeiro?
  • Mercury contamination in the sludge of drinking water treatment plants dumping into a reservoir in Rio de Janeiro, Brazil. Environ. Sci. Pollut.
  • Why is tertiary wastewater treatment important in Brazil?
  • Municipal wastewater treatment facilities in Brazil treat up to the secondary (biological) stage, leading to limited removal of contaminants of emerging concern. It is an urgent priority to improve the sanitation infrastructure implementing tertiary treatment ( Starling et al. 2018 ).
  • How many chemical contaminants are found in Brazilian drinking water?
  • In the present systematic review, 77 different chemical contaminants were found in Brazilian drinking water, 22 of which were predicted in the Brazilian health-based target and 54 emerging pollutants where guidelines were proposed.
  • Which coagulants are used in tannery effluent treatment?
  • Inorganic coagulants such as aluminum sulfate, ferrous sulfate, and ferric chloride have been employed for treating tannery effluents and paper and pulp industries. These assist in reducing the COD and suspended solids along with dye removal capacity (Ates et al. 1997; Lofrano et al. 2006).