Abstract
The mixed wastewater of 1, 4 butanediol was tested with iron filings and carbon powder as catalyst by aeration to provide oxygen. The effects of carbon powder, pH value and reaction time on wastewater treatment were studied. The optimal experimental condition was that the mesh number of activated carbons was 20, the pH value was 5, the reaction time was 30min, and the Chemical Oxygen Demand (COD) removal efficiency reached 36.2%. At the same time, The response surface method was used to analyze and optimize the experimental results, and the relation formula of each influencing factor on removal efficiency was established, and the order of influence degree of each factor on removal efficiency (pH> activated carbon mesh number > reaction time) was obtained, in which pH had the greatest influence on the treatment rate of ferro-carbon micro-electrolysis treatment of 1, 4-butanediol wastewater.
Highlights
Introduction1, 4 butanediol is an important organic chemical raw material, which is widely used in pharmaceutical chemical textile paper cars and daily chemical industry [5]
The mixed wastewater of 1, 4 butanediol was tested with iron filings and carbon powder as catalyst by aeration to provide oxygen
The experimental results indicated that the activated carbon mesh number was 20, pH value was 5, reaction time was 30min, and the COD removal efficiency reached 36.2%, which provided the fundamental researches for the Ferro-carbon micro-electrolytic treatment technology of 1, 4-butanediol mixed wastewater
Summary
1, 4 butanediol is an important organic chemical raw material, which is widely used in pharmaceutical chemical textile paper cars and daily chemical industry [5]. Ferro-carbon micro-electrolysis used the metal corrosion principle method to conduct electrolytic treatment of the waste water, by using the self-generated 1.2V potential difference of the micro-electrolytic material filled in the waste water without power, and achieve the purpose of degrading organic pollutants. The oxidation reduction reaction of dissolved oxygen and Fe2+ in wastewater will destroy the molecular structure of some organic substances. 1, 4 butanediol mixed wastewater was taken as the research object, air was taken as the oxidant, and the effects factors such as pH, reaction time and activated carbon mesh number were studied. The experimental results indicated that the activated carbon mesh number was 20, pH value was 5, reaction time was 30min, and the COD removal efficiency reached 36.2%, which provided the fundamental researches for the Ferro-carbon micro-electrolytic treatment technology of 1, 4-butanediol mixed wastewater. Response Surface Methodology (RSM) was used to analyze and optimize the experimental results, and a quadratic polynomial mathematical model was established for the relationship between COD removal efficiency and various factors, and effect of the different factors on COD removal efficiency was analyzed
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