铁碳微电解材料处理含酚废水的研究

Research on the Treatment of Phenol-Containing Wastewater by Iron-Carbon Microelectrolytic Materials

以生物质碳为造孔剂,以铸铁粉和碳粉为主要原料高温烧结制得多孔铁碳微电解材料,并应用于2-萘酚模拟废水的处理。最佳制备条件为铸铁粉∶活性碳粉末∶膨润土∶花生壳∶硅酸钠的质量比为35∶35∶10∶8.5∶11.5,800℃高温无氧焙烧2 h。实验结果表明废水初始pH为3,反应时间4 h,持续曝气,材料对模拟含酚废水的去除效果最佳,2-萘酚的每克去除量为7.76 mg,去除率达到81.3%,COD的每克去除量为7.38 mg,去除率达到53.74%,该工艺对含酚废水取得了良好的处理效果。造孔剂选用花生壳、秸秆、木屑等,原料易得,价格低廉,制备简单,实现以废治废的目的,在废物利用和绿色环保方面具有一定的意义。

Biomass carbon as a pore-forming agent,cast iron,and carbon powders as the main raw materials were used to prepare porous iron-carbon microelectrolytic materials under high temperatures for the treatment of 2-naphthol simulated wastewater.The optimum preparation conditions were as follows:the mass ratio of cast iron powder,active carbon powder,bentonite,peanut shell,and sodium silicate was 35:35:10:8.5:11.5 unde 800℃ for 2 h without oxygen.The results showed that the best removal effect on the simulated phenol containing wastewater was the initial pH of 3,and the reaction time of 4 h under continuous aeration.The removal rate of 2-naphthol per gram reached 7.76 mg and the removal rate of 81.3%.The removal rate of COD per gram reached 7.38 mg and the removal rate of 53.74%.This process has achieved a good treatment effect on the phenolic wastewater.The pore-forming agent was selected from peanut shells,straw,wood chips,etc.The raw materials are easy to obtain,inexpensive and simple preparation,which realizes the purpose of waste treatment waste.And this process has a certain significance in waste utilization and green environmental protection.