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Case analysis on textile wastewater subjected to combined physicochemical–biological treatment and ozonation

机译：物理化学-生物处理-臭氧混合法处理纺织废水的案例分析

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摘要

The large amount of wastewater produced by the textile industry necessitates a cost-effective technology for enhanced wastewater treatment. In this study, a combined processing method was established to enhance discharge water quality. This process incorporated a pretreatment system, a biological contact oxidation unit, an ozone oxidation unit, and an intensive treatment system. Through this treatment approach, the ozonation of textile wastewater was examined to determine the effects of ozone dosage, ozonation time, and color/chemical oxygen demand (COD) of feed wastewater. Results revealed that the color and COD removal rates increased with increased ozone dosage. Color and COD decreased whereas NH3-N slightly increased with the progress of ozonation. Color removal rate decreased whereas ozone dosage increased with increased feed color and COD. Feed color greatly influenced ozone dosage but not COD. Color removal rate during ozonation can be controlled to 50%-55% at a response time of approximately 2 h. The average ozone dosage was 51 g m(-3). After treatment by the combined process, the final discharge water was able to meet the national first-grade emission standard (GB4287-2012). The total removal rates of COD and color reached 95.2% and 95.4%, respectively. The cost of wastewater treatment amounted to only approximately 1.70 Yuan RMB m(-3) wastewater.
机译：纺织工业产生的大量废水需要一种经济有效的技术来增强废水处理能力。在这项研究中，建立了一种联合处理方法来提高排放水的质量。该方法包括预处理系统，生物接触氧化单元，臭氧氧化单元和强化处理系统。通过这种处理方法，对纺织品废水的臭氧化进行了检查，以确定臭氧剂量，臭氧化时间和进料废水的颜色/化学需氧量（COD）的影响。结果表明，颜色和化学需氧量去除率随臭氧剂量的增加而增加。随着臭氧化的进行，颜色和化学需氧量降低，而NH3-N略有增加。脱色率降低，而臭氧剂量随饲料颜色和COD的增加而增加。进料颜色极大地影响了臭氧的用量，但未影响COD。臭氧化过程中的脱色率可以在大约2小时的响应时间内控制在50％-55％。平均臭氧剂量为51 g m（-3）。经过联合工艺处理后，最终排放水达到国家一级排放标准（GB4287-2012）。 COD和颜色的总去除率分别达到95.2％和95.4％。废水处理成本仅约为1.70元人民币m（-3）废水。

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  • 来源
    《Desalination and water treatment》 |2017年第3期|140-148|共9页
  • 作者

    Yin Hua; Guo Huafang; Qiu Peiwen; Yi Linzi; Li Jiajie;

  • 作者单位

    Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;

    Foshan City Jialida Environm Protect Technol Corp, 10 Xingtang Rd,Datang Ind Pk, Foshan 528143, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;

    Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Textile wastewater; Physicochemical-biological treatment; Ozonation; Color removal;

    机译：纺织废水;物化生物处理;臭氧化;脱色;

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