Fenton氧化法处理石化含油废水生化出水
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摘要
采用Fenton氧化法处理石化含油废水生化出水,通过正交实验和单因素实验优化了反应工艺条件。正交实验得到各因素对COD去除率的影响大小顺序为:溶液初始pH>H_2O_2投加量>n(H_2O_2)∶n(Fe~(2+))>反应温度。实验最佳工艺条件为:初始溶液pH 4.0,H_2O_2投加量3.00 mL/L,n(H_2O_2)∶n(Fe~(2+))=10,反应温度35℃,反应时间60 min。在此最佳工艺条件下COD可降至60.33 mg/L,COD去除率达61.33%。在最佳工艺条件下,分别采用超声(US)-Fenton氧化和紫外光(UV)-Fenton氧化技术处理含油废水生化出水,COD去除率分别达76.77%和80.23%。但单一Fenton氧化、US-Fenton氧化和UV-Fenton氧化工艺对NH_3-N的去除效果均并不明显。
The petrochemical wastewater effluent after biochemical treatment was treated by Fenton oxidation process. The process conditions were optimized by orthogonal experiments and single factor experiments. The order of effects on COD removal rate was as follows:initial solution pH > H_2O_2 addition amount > n(H_2O_2)∶n(Fe~(2+))> reaction temperature. The optimum process conditions were as follows:initial solution pH 4.0,H_2O_2 addition amount 3.00 mL/L,n(H_2O_2)∶n(Fe~(2+))=10,reaction temperature 35 ℃,reaction time 60 min. Under these conditions COD was decreased to 60.33 mg/L with 61.33% of the removal rate. When the effluent was treated by ultrasound(US)-Fenton oxidation process and UV-Fenton oxidation process under these optimum conditions,the COD removal rate was 76.77%and 80.23% respectively. But all processes of single Fenton oxidation,US-Fenton oxidation and UV-Fenton oxidation had little effect on NH_3-N removal.
The petrochemical wastewater effluent after biochemical treatment was treated by Fenton oxidation process. The process conditions were optimized by orthogonal experiments and single factor experiments. The order of effects on COD removal rate was as follows:initial solution pH > H_2O_2 addition amount > n(H_2O_2)∶n(Fe~(2+))> reaction temperature. The optimum process conditions were as follows:initial solution pH 4.0,H_2O_2 addition amount 3.00 mL/L,n(H_2O_2)∶n(Fe~(2+))=10,reaction temperature 35 ℃,reaction time 60 min. Under these conditions COD was decreased to 60.33 mg/L with 61.33% of the removal rate. When the effluent was treated by ultrasound(US)-Fenton oxidation process and UV-Fenton oxidation process under these optimum conditions,the COD removal rate was 76.77%and 80.23% respectively. But all processes of single Fenton oxidation,US-Fenton oxidation and UV-Fenton oxidation had little effect on NH_3-N removal.
引文
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[2]何怡萱,施震东,李佳慧,等.用CO2改性碱渣废水强化炼油废水的硝化效能[J].化工环保,2016,36(3):307-311.
[3]武文丽,颜家保,纪南南,等.炼油废水中异养硝化-好养反硝化菌的筛选[J].化工环保,2016,36(4):354-358.
[4]张雪.Fenton氧化处理石化二级出水的试验研究[D].兰州:兰州交通大学,2014.
[5]魏健,赵乐,宋永会,等.均相Fenton法处理干法腈纶废水工艺优化与分析[J].环境科学学报,2013,33(8):2187-2192.
[6]张晓娟,刘发强,王树勖,等.Fenton试剂处理污水回用装置反渗透单元浓水的研究[J].广东化工,2011,38(4):156-157,159.
[7]彭人勇,邱晓.O3-H2O2氧化法处理印染废水[J].化工环保,2013,33(4):308-311.
[8]魏继苗.Fenton氧化法处理石化二级出水的试验研究[D].西安:长安大学,2013.
[9]国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2010:102-103,211-212,279-281.
[10]姜成春,庞素艳,马军,等.钛盐光度法测定Fenton氧化中的过氧化氢[J].中国给水排水,2006,4(22):88-91.
[11]Bautista P,Mohedano A F,Gilarranz M A,et al.Application of Fenton oxidation to cosmetic wastewaters treatment[J].J Hazard Mater,2007,143(12):128-134.
[12]邢乃军,王金刚,王晨,等.Fenton试剂在有机废水处理中的应用[J].山东轻工业学院学报:自然科学版,2009,23(1):6-9.
[13]Velo-Gala I,López-Pe?alver J J,Sánchez-Polo M,et al.Comparative study of oxidative degradation of sodium diatrizoate in aqueous solution by H2O2/Fe2+,H2O2/Fe3+,Fe(Ⅵ)and UV,H2O2/UV,K2S2O8/UV[J].Chem Eng J,2014,241(4):504-512.