A treatment of electroplating wastewater from Shenzhen using microbial flocculants was studied.The microbial flocculants were produced by a strain of Bacillus mucilaginosus.Results showed that,after adding flocculant(FT),the concentrations of heavy metal ions decreased and the pH values of wastewater samples increased.The control groups,using autoclaved flocculants and adjusting pH by NaOH solution,were set up;the important role of bacteria in the microbial flocculants as well as the superiority of the micr...