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Pretreatment of Pulping Medium Wastewater by Fe/C Micro-Electrolysis

Xiaoli Li

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Abstract

Micro-electrolysis is an environment-friendly technology of wastewater treatment and has significance of using waste to treat waste. In this paper effect of factors on treatment of pulping medium wastewater by micro-electrolysis was studied,and the optimum conditions were determined. The results showed that when the aeration amount was 6L·min-1,pH=4,Fe/C=4,and the reaction time was 30min,the COD and color removal rate was more than 60% and 80%,respectively. The same result was observed from UV spectrum,which indicated that most chromophoric groups of the lignin were removed by micro-electrolysis technology.

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What this paper is about

Micro-electrolysis is an environment-friendly technology of wastewater treatment and has significance of using waste to treat waste. In this paper effect of factors on treatment of pulping medium wastewater by micro-electrolysis was studied,and the optimum conditions were determined. The results showed that when the aeration amount was 6L·min-1,pH=4,Fe/C=4,and the reaction time was 30min,the COD and color removal rate was more than 60% and 80%,respectively. The same result was observed from UV spectrum,which indicated that most chromophoric groups of the lignin were removed by micro-electrolysis technology.

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Available abstract

Micro-electrolysis is an environment-friendly technology of wastewater treatment and has significance of using waste to treat waste. In this paper effect of factors on treatment of pulping medium wastewater by micro-electrolysis was studied,and the optimum conditions were determined. The results showed that when the aeration amount was 6L·min-1,pH=4,Fe/C=4,and the reaction time was 30min,the COD and color removal rate was more than 60% and 80%,respectively. The same result was observed from UV spectrum,which indicated that most chromophoric groups of the lignin were removed by micro-electrolysis technology.

Key concepts: Electrolysis, Wastewater, Aeration, Pulp and paper industry, Waste management, Chemistry, Black liquor, Environmental science

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