酸析-铁碳内电解预处理苎麻废水实验研究

Pre-treatment of Ramie Wastewater by Acidification and Iron Chip Inner-Electrolysis

作者采用酸析结合铁碳内电解法对苎麻废水进行了预处理,探讨了pH调节条件及铁碳内电解法对废水处理效果的影响。结果表明,在室温下将废水pH调节至3.00时,COD cr可以从15789.47m g/L下降到11491.23m g/L,COD cr去除率达27.22%,色度去除率达83.58%;接着在pH=3.00,处理时间40m in,铁碳加入量:废水(质量比)=1:5,铁:碳=3:1,温度=300C的最佳工艺条件下,用铁碳内电解法进一步对废水进行了处理,COD cr可以进一步下降到6948.38m g/L,COD cr去除率接近55%,色度去除率达80%。

Ramie wastewater was pretreated by acidification combined with icon chip inner--electrolysis in this paper. We discussed how pH adjustment and iron chip inner-electrolysis effect on the treatment of waste Water. When the pH of wastewater was adjusted to 3. 0 at room temperature, some organic matter would be removed from the water. As a consequence, CODcr and color rate would have a decrease in 83. 58% and 27.22%, respectively. Then, under the most favorable working condition, we luther treated the wastewater by the above method, resulting in the removal rate of colors and CODcr reaching about 80% and 55%, repectively. The condition is as follows： pH= 3. 00, reaction time= 40 min, mass ratio of Fe＆C to wastewater = 0. 2, Fe： C = 3, and the temperature = 30℃.