电芬顿-臭氧一体化工艺处理船舶生活污水

摘要

高级氧化技术是一种新型、绿色的水处理工艺，通过各种强化技术更快、更多地产生具有强氧化性的羟基自由基，使其与废水中的有机物发生链式反应，从而将废水中的有机物快速高效降解为无害的无机盐。采用两种典型的高级氧化技术：电芬顿和臭氧，一体化处理船舶生活污水，研究结果表明：在电流密度20 mA/cm²，芬顿试剂n（H₂O₂）：n（Fe²⁺）=3：1，C（Fe²⁺）为0.01 mol/L，氧气速率2 L/min，臭氧投加量6 g/L时，电芬顿-臭氧一体化装置能有效降解船舶生活污水中的污染物，当处理时间为120 min时，对COD去除率可达86.4%。

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	张未军
	齐崴
	苏荣欣
	何志敏

关键词：生活污水；电芬顿；臭氧； COD；过氧化氢

Abstract：

Advanced oxidation processes (AOPs) are considered a new type of environmental-friendly technology used for wastewater treatment. AOPs are based on the generation of a large amount of hydroxyl radicals rapidly through a variety of reinforcement technologies, then organics in the sewage can be quickly and efficiently degraded into harmless inorganic salts by chain reaction induced between hydroxyl radicals and the organic matters. As two typical technologies of the AOPs, Electro-Fenton and ozone were introduced for ship sewage treatment by integrated method. The efficiency of this new E-Fenton/O₃ system on the ship sewage treatment was evaluated in terms of its removal efficiency of chemical oxygen demand (COD). The results showed that under optimal reaction conditions that included a current density of 20 mA/cm², Fenton reagent (H₂O₂ and Fe²⁺) ratio of 3:1 with Fe²⁺ dosage of 0.01 mol/L, the O₂ flow rate of 2 L/min and the ozone dosage of 6 g/L, the integrated process by E-Fenton/O₃ system could effectively degrade sewage and achieve the removal of COD as high as 86.4% in 120 min.

Keywords： sewage； Electro-Fenton； ozone； COD； hydrogen peroxide

Received 2015-05-09;

Fund:

天津市科技兴海计划项目（KX2010-0007）。

Corresponding Authors: 齐崴,E-mail:qiwei@tju.edu.cn。 Email: qiwei@tju.edu.cn

About author: 张未军(1989-),男,硕士研究生,从事水处理研究。

引用本文:

张未军, 齐崴, 苏荣欣, 何志敏.电芬顿-臭氧一体化工艺处理船舶生活污水[J]. 化学工业与工程, 2017,34(2): 62-67

Zhang Weijun, Qi Wei, Su Rongxin, He Zhimin.Removal of COD from Sewage by Integrated E-Fenton and Ozone[J]. Chemcial Industry and Engineering, 2017,34(2): 62-67

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