Przemysl Chemiczny, Vol.96, No.7, 1477-1480, 2017
Treatment of wastewater from chemical synthesis by activated sludge method. Part 1. Efficiency of the process
Industrial wastewater was treated with H2SO4 or Ca(OH)(2) to adjust pH 7-8.5 and with a Fe salt to coagulate the suspension and then mixed with activated sludge. The municipal wastewater was processed as a ref. The study was carried out for 39 days. A substantial decrease in ammonium N concn. and an increase in the nitrate N concn. were obsd. in both wastewaters. A decrease in COD and BOD was also evidenced. The municipal wastewater showed high ability to nitrification.