Journal of East China Normal University(Natural Science) ›› 2024, Vol. 2024 ›› Issue (1): 29-35.doi: 10.3969/j.issn.1000-5641.2024.01.004

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Treatment of industrial park wastewater using a combination of hydrolysis acidification, anaerobic-anoxic-oxic-anoxic-oxic, and Fenton oxidation technology

Yanjie HUANG1(), Guoyi ZHENG1, Huayong YU1, Hanbin ZHU2,3, Fudong YU1, Jing WANG1, Xuchao SUN1, Jiguang YIN1, Lei AN1, Yuanyuan LIN1,*()   

  1. 1. Zhejiang Province Environmental Engineering Co. Ltd., Hangzhou　310012, China
    2. School of Ecological and Environmental Sciences, East China Normal University, Shanghai　200241, China
    3. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai　200241, China
  • Received:2023-08-21 Accepted:2023-12-01 Online:2024-01-25 Published:2024-01-23
  • Contact: Yuanyuan LIN E-mail:hyj_autoon@126.com;46605276@qq.com

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Abstract:

Industrial park wastewater is characterized by various components, changeable water quality, complex pollutant factors, poor biodegradability, and high emission standards. A full-scale industrial park wastewater treatment plant in Deqing was used as an example to investigate the technical-economic feasibility of a process combining hydrolysis acidification, anaerobic-anoxic-oxic-anoxic-oxic (A2/O+AO), and Fenton oxidation in treating wastewater from various enterprises, primarily printing and dyeing, food manufacturing, and metal processing factories. The effluent chemical oxygen demand, ammoniacal nitrogen, total nitrogen, and total phosphorus stably met the required discharge limits for Urban Sewage Treatment Plants (DB33/2169—2018), while other indicators reached Grade A standard for Urban Sewage Treatment Plants (GB18918—2002). The engineering investment and actual operation costs of the wastewater treatment plant were 8200 and 2.39 yuan/m3, respectively.

Key words: industrial park wastewater, hydrolytic acidification, anaerobic-anoxic-oxic-anoxic-oxic (A2/O+AO), Fenton oxidation

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