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›› 2014, Vol. 14 ›› Issue (4): 610-616.

• 过程与工艺 • 上一篇    下一篇

Fe/C微电解-Fenton氧化-混凝沉淀-生化法处理松节油加工废水

聂丽君 周如金 钟华文 邱松山 米世伍   

  1. 广东石油化工学院 广东石油化工学院 广东石油化工学院 广东石油化工学院 广东松林香料有限公司
  • 收稿日期:2014-06-12 修回日期:2014-07-21 出版日期:2014-08-20 发布日期:2014-08-20
  • 通讯作者: 聂丽君

Treatment of Turpentine Processing Wastewater by Combined Process of Fe/C Microelectrolysis-Fenton Oxidation-Coagulation Sedimentation-Biochemical Technology

NIE Li-jun ZHOU Ru-jin ZHONG Hua-wen QIU Song-shan MI Shi-wu   

  1. Guangdong University of petrochemical technology College of Chemical and Environment Engineering , Guangdong University of Petrochemical Technology Guangdong University of petrochemical technology Guangdong University of petrochemical technology Guangdong Songlin Spice Co., Ltd
  • Received:2014-06-12 Revised:2014-07-21 Online:2014-08-20 Published:2014-08-20
  • Contact: NIE Li-jun

摘要: 采用Fe/C微电解-Fenton氧化-混凝沉淀-生化法组合工艺处理松节油加工废水,首选通过正交和单因素实验,确定Fe/C微电解、Fenton氧化、混凝沉淀等工艺运行的最佳条件,考察COD的去除效果及BOD5/CODCr比值的改变,探讨废水的可生化性的改善;然后通过BAF工艺进行生化处理,确定工艺影响参数,考察废水达标排放的可行性. 结果表明,在铁屑投加量为100 g/L,Fe/C质量比为1.5:1,H2O2投加量为40 mL/L,PAM投加量为8 mg/L时,废水经Fe/C微电解、Fenton氧化、混凝沉淀等工艺预处理后出水COD为200~450 mg/L,COD去除率达98%,BOD5/CODCr比值由0.13提高到0.64,满足后续生化处理要求;生化处理单元采用曝气生物滤池,在水力停留时间为5 h、DO浓度为2~3 mg/L,处理后出水COD、动植物油和色度为50~90, 3~10和30~50 mg/L时,出水水质达到《污水综合排放标准》(GB8978-1996)一级标准.

关键词: 松节油废水, Fe/C微电解, Fenton氧化, 混凝沉淀, 曝气生物滤池

Abstract: The combined process of Fe/C microelectrolysis-Fenton oxidation-coagulation sedimentation and biochemical technology is adopted to treat the turpentine processing wastewater. Firstly, through the signal factor and orthogonal experiments, the optimal operating conditions of Fe/C microelectrolysis, Fenton oxidation and coagulation sedimentation are determined, and the removal efficiency of chemical oxygen demand (COD) and the change of BOD5/CODCr value are investigated. The improvement of biodegradability of the wastewater is then discussed. Secondly, by the treatment of biological aeration filter (BAF), the influential parameters can be defined, and the feasibility of wastewater discharging standard is then investigated. The results show that when the dosage of iron chips is 100 g/L, Fe/C ratio 1.5:1, dosage of H2O2 40 mL/L and dosage of PAM 8 mg/L, respectively, the COD value is 200~450 mg/L, the COD removal efficiency 98% and the BOD5/CODCr value can be improved from 0.13 to 0.64, meeting the requirements for the successive biochemical treatment unit. Thus BAF is used for the biochemical treatment unit. The indices of COD, fats and oils, and chroma of treated water are 50~90, 3~10 and 30~50 mg/L, respectively, under the conditions of hydraulic retention time for 5 h and concentration of DO at 2~3 mg/L. The output water quality meets the first grade standard in Comprehensive Discharging Standard for Wastewater (GB8978-1996).

Key words: turpentine processing wastewater, Fe/C microelectrolysis, Fenton oxidation, coagulation sedimentation, biological aeration filter

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