酸析+铁炭微电解-Fenton氧化预处理印染开纤废水的研究  

Pretreatment Research of Fabric Alkaline Hydrolysis Wastewater by Acid Precipitation + Fe/C micro-electrolysis-Fenton Oxidation

作　　者：吴惠明 

机构地区：[1]中山市恒雅环保工程有限公司,广东中山528403

出　　处：《广东化工》2017年第14期194-195,共2页Guangdong Chemical Industry

摘　　要：采用酸析+铁炭微电解-Fenton氧化预处理印染开纤废水,研究了工艺条件对COD去除率的影响。结果表明,酸析的最佳运行条件:pH=3;铁炭微电解的最佳运行条件为:进水pH=2,反应时间2小时;Fenton氧化进水pH=3,反应时间为60 min,30%浓度H_2O_2最佳投加量2.5 m L/L。在此运行条件下,COD总去除率可以达到94.5%,废水的B/C比由原来的0.02提升至0.25。采用该工艺预处理开纤废水,有效降低了后续生化处理的负荷,提高了废水的可生化性。In this paper, fabric alkaline hydrolysis wastewater was treated by acid precipitation and Fe/C micro-electrolysis -Fenton oxidation. The influence of technological conditions on removal rate of COD was studied. The results show that the optimum operation condition of acid precipitation is pH=3： the optimum operation condition of Fe/C micro-electrolysis is： influent pH=2 and reaction time 2 hours; Fenton oxidation influent pH=3, the reaction time is 60 min, 30 % concentration H2O2, the optimum dosage is 2.5 mL/L. Under this operating condition, the total removal rate of COD can reach 94.5 %, and the B/C of wastewater will be increased from 0.02 to 0.25. The treatment of fabric alkaline hydrolysis wastewater with this process effectively reduces the burden of subsequent biochemical treatment and improves the biodegradability of wastewater.

关 键 词：酸析 铁炭微电解 Fenton氧化 印染 开纤废水 预处理 

分 类 号：TQ[化学工程]