铁碳微电解技术处理实际印染废水

Treatment of actual dyeing wastewater with iron-carbon micro-electrolysis technology

针对印染废水水质波动大、有机成分复杂且难降解的问题,采用铁碳微电解技术对印染废水进行预处理,以达到降低印染废水浓度并提高其可生化性的目的.选用市售铁碳填料对实际印染废水进行微电解处理,通过单因素实验获得最佳反应条件.结果表明,在曝气条件下当铁碳填料质量与废水体积的配比为1∶2,初始p H值为3,废水停留时间为120 min时,印染废水的COD去除率可达52.74%,B/C比可以提高至0.53.因此,利用铁碳微电解技术处理印染废水具有明显优势,且能够提高废水的可生化性.

Aiming at the problem of high water quality variation,complex organic composition and difficult degradation of dyeing wastewater,the pretreatment of dyeing wastewater with iron-carbon micro-electrolysis technology was performed in order to reduce the concentration of dyeing wastewater and improve its biodegradability. The micro-electrolysis treatment for the actual dyeing wastewater was carried out with the commercial iron-carbon filler, and the best reaction condition was obtained through the single factor experiment. The results showthat under the aeration condition,when the volume ratio between the filler mass and wastewater volume is 1 ∶ 2,the initial pH value is 3 and the residence time of wastewater is 120 min,the COD removal rate of dyeing wastewater reaches 52. 74%,and the B/C ratio increases to 0. 53. Therefore,the iron-carbon micro-electrolysis technology has obvious advantages in the treatment of dyeing wastewater,and can improve the biodegradability of wastewater.