采用 Fe-BAF 和臭氧氧化相结合的创新方法处理石化二级出水，以增强磷和有机微污染物的去除效果。
Innovative combination of Fe-BAF and ozonation for enhancing phosphorus and organic micropollutants removal treating petrochemical secondary effluent.
机构信息
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China.
出版信息
J Hazard Mater. 2017 Feb 5;323(Pt B):654-662. doi: 10.1016/j.jhazmat.2016.10.029. Epub 2016 Oct 14.
Two sets of BAF - ozonation systems, with (System-A) and without (System-B) Fe dosing into BAF, were used for organic micropollutants (OMPs) and phosphorus removal in the advanced treatment of petrochemical secondary effluent. Pilot scale study showed that when the influent COD, TP and TSS were 73.0, 1.40 and 24.6mgL, the effluent COD, TP and TSS were 48.9, 0.32, 7.78mgL for System-A with the ozone and Fe dosage of 25mgL and 0.08mmolL, and 60.2, 1.16, 6.44mgL for System-B with the ozone dosage of 25mgL. The dosage of Fe into the BAF significantly enhanced the TP and OMPs removal ability. Exactly, the residual Fe in the BAF-A effluent stimulated the catalytic ozonation in the following ozone unit. Therefore, the OMPs removal in System-A was obviously better than that in System-B. The dosage of Fe from 0.02 to 0.10mmolL had slight adverse effect on the biofilm activity in BAF. Based on the TP and OMPs removal ability, the System-B is selected as a proposed process for the advanced treatment of petrochemical secondary effluent.
两组 BAF-臭氧系统，一组（系统 A）和一组不（系统 B）向 BAF 中投加 Fe，用于石化二级出水的深度处理去除有机微污染物（OMPs）和磷。中试研究表明，当进水 COD、TP 和 TSS 分别为 73.0、1.40 和 24.6mg/L 时，系统 A 的臭氧和 Fe 投加量分别为 25mg/L 和 0.08mmol/L，出水 COD、TP 和 TSS 分别为 48.9、0.32 和 7.78mg/L；系统 B 的臭氧投加量为 25mg/L，出水 COD、TP 和 TSS 分别为 60.2、1.16 和 6.44mg/L。向 BAF 中投加 Fe 显著提高了 TP 和 OMPs 的去除能力。确切地说，BAF-A 出水中残留的 Fe 刺激了后续臭氧单元中的催化臭氧氧化。因此，系统 A 中的 OMPs 去除明显优于系统 B。从 0.02 到 0.10mmol/L 的 Fe 投加量对 BAF 中的生物膜活性有轻微的不利影响。基于 TP 和 OMPs 的去除能力，选择系统 B 作为石化二级出水深度处理的推荐工艺。
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