An experimental study on waste water Containing chromium of continuous foam separation

摘要

Study on waste water containing chromium of continuous foam separation.In continuous foam separation,surface-active agent was inputted into the system at adding mode.Under certain height of liquid level, the influence of the height of chang-in,pH value of the wasterwater, the feeding speed of SDS, the charging capacity of Fe(NO3)3, gas flux and charge-in flux on foam flotation effect was investigated and the optimal parameters was obtained.The concentration of chromium ion was about 0.3mg.L-1,COD was smaller than 100mg.L-1.PH value was close to neutrality,which reach the Second Wastewater Discharge Standard of Country.