Experimental Study on Ramie Wastewater Pre-Treatment by Acidification and Ferrous-Carbon Inner Electrolysis

Ramie wastewater was pre-treated by acidification combined with ferrous-carbon inner-electrolysis,probing into the influences of ferrous-carbon inner-electrolysis on the treatment of wastewater under pH-adjusted condition.The result showed that under room temperature,with wastewater's pH adjusted to 3.00 and because of emission of organic substance,COD_(Cr) decreased from 15,789.47mg/L to 11,491.23mg/L,the removal rate of COD_(Cr) and color removal rate reached 27.22% and 83.58% respectively;then with the best technical condition of pH equal to 3.00,40min of treatment time and the ratio of 3:1 between Fe and Carbon,the mass ratio of wastewater of 1:5 and the temperature of 30℃,COD_(Cr) could be reduced to 6,948.38mg/L and COD_(Cr) removal rate reached about 80% by ferrous-carbon inner-electrolysis treatment.