PRETREATMENT OF CELLULOSE ZYMOLYTIC WASTEWATER WITH IRON-CARBON AERATION MICROELECTROLYSIS METHOD
Dongxiao Zhang
Abstract
Dongxiao Zhang
Abstract
The pretreatment of cellulose zymolytic wastewater with iron-carbon aeration microelectrolysis method was researched by orthogonal experiment. The optimum conditions were determined as follows∶pH 4—5,the mass concentration of iron150 g· l-1,the ratio of iron to carbon was 1∶2,reaction time 1 hour,aeration rate 30ml·min-1. Under these conditions,the CODCr decreased about 25%,and the removal ratio of chroma was 87.5%,the inhibitors to ferment ethanol were removed well and the biodegradability was improved greatly. Simultaneity,the influences of particle sizes and Cu to microelectrolysis were studied. It was show that when cuprum was added,it formed a copper-iron-carbon double electrolytic reaction,so that the effect of microelectrolysis was increased.
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The pretreatment of cellulose zymolytic wastewater with iron-carbon aeration microelectrolysis method was researched by orthogonal experiment. The optimum conditions were determined as follows∶pH 4—5,the mass concentration of iron150 g· l-1,the ratio of iron to carbon was 1∶2,reaction time 1 hour,aeration rate 30ml·min-1. Under these conditions,the CODCr decreased about 25%,and the removal ratio of chroma was 87.5%,the inhibitors to ferment ethanol were removed well and the biodegradability was improved greatly. Simultaneity,the influences of particle sizes and Cu to microelectrolysis were studied. It was show that when cuprum was added,it formed a copper-iron-carbon double electrolytic reaction,so that the effect of microelectrolysis was increased.
Key concepts: Chemistry, Aeration, Biodegradation, Cellulose, Wastewater, Carbon fibers, Environmental chemistry, Pulp and paper industry