改良Fenton工艺用于化工园区污水深度处理的小试

发布时间：2018-01-16 22:32

本文关键词：改良Fenton工艺用于化工园区污水深度处理的小试　出处：《环境工程学报》2017年11期 　论文类型：期刊论文

【摘要】：针对传统Fenton工艺产泥量大,处理成本高等问题,开发了一种基于含铁污泥再生回用的改良Fenton工艺。改良Fenton工艺主要包括Fenton水处理和含铁污泥再生两部分,其中含铁污泥再生工艺包括酸化过程和还原过程。实验结果表明,酸化反应的加酸量和上清液总铁浓度可根据含铁污泥浓度进行估算;还原反应铁粉投加量与酸化后溶液中总铁浓度1∶1时最优,生成的Fe2+浓度约为原溶液总铁浓度1.5倍,剩余铁粉可重复利用。含铁污泥再生催化剂用于Fenton工艺,降解COD的效果与Fe SO4作为催化剂的效果一致。利用改良Fenton工艺对化工园区污水进行深度处理,出水COD低于60 mg·L~(-1)。与传统Fenton工艺相比,改良Fenton工艺能减少60%的含铁污泥排放,降低运行成本40%以上。
[Abstract]:Aiming at the problems of high sludge production and high treatment cost in traditional Fenton process. An improved Fenton process based on the regeneration and reuse of ferric sludge was developed. The modified Fenton process mainly includes two parts: Fenton water treatment and iron sludge regeneration. The experimental results show that the acid addition and total iron concentration of supernatant can be estimated according to the concentration of ferric sludge. When the amount of iron powder was added and the total iron concentration of acidified solution was 1: 1, the concentration of Fe2 was about 1.5 times that of the original solution. The residual iron powder can be reused. Ferric sludge regeneration catalyst is used in Fenton process. The effect of COD degradation was the same as that of Fe SO4 as catalyst. The improved Fenton process was used for advanced treatment of wastewater from chemical industry park. The effluent COD is less than 60mg 路L ~ (-1) Fenton. Compared with the traditional Fenton process, the improved Fenton process can reduce the discharge of ferric sludge by 60% and reduce the running cost by more than 40%.
【作者单位】：上海电气集团股份有限公司中央研究院;
【分类号】：X703
【正文快照】： 随着我国新一轮产业结构的调整和环保型工业化模式的发展,园区化管理已成为化工行业发展的主流,园区废水统一收集,集中处理,也成为化工园区废水处理的主要模式。化工园区废水具有成分复杂、可生化性差、有毒有害污染物多和冲击负荷大等特点[1-2]。随着污水排放标准的不断提高,

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