Study on pretreatment of chemical acidic wastewater with micro-electrolysis and aeration
Jingming Liu
Abstract
Jingming Liu
Abstract
The aeration and Fe/C micro-electrolysis process were adopted in treating chemical acidic wastewater of high concentration.The effects of Fe/C ratio and reaction time on the removal efficiency of CODcr etc.were studied.The results showed that when the ratio of Fe/C was 4 and reaction time was 5.0 hours,and when influent CODcr was 1?675?mg/L and pH was 1.77,the greatest removal efficiency of(CODcr) reached 51.5%,and the BOD_5/CODcr of chemical acidic wastewater was improved from 0.22 to(0.35).So a scientific basis of reference was provided for reforming neutralization system.
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The aeration and Fe/C micro-electrolysis process were adopted in treating chemical acidic wastewater of high concentration.The effects of Fe/C ratio and reaction time on the removal efficiency of CODcr etc.were studied.The results showed that when the ratio of Fe/C was 4 and reaction time was 5.0 hours,and when influent CODcr was 1?675?mg/L and pH was 1.77,the greatest removal efficiency of(CODcr) reached 51.5%,and the BOD_5/CODcr of chemical acidic wastewater was improved from 0.22 to(0.35).So a scientific basis of reference was provided for reforming neutralization system.
Key concepts: Electrolysis, Aeration, Wastewater, Chemistry, Pulp and paper industry, Chemical oxygen demand, Environmental chemistry, Environmental science