... costs low 3,Prevent sludge bulking 4,Get a higherBOD,COD andAmmonia oxygen Technology Characterisitics:My company in paper making, chemical ... contact with the mixture, not only can degrade BOD and COD, sewage part of the biochemical sex is greatly improved.3 ... activated sludge process completely mixed, so get a higher BOD, COD, ammonia nitrogen removal efficiency.5,On the environment temperature lower ...