ZHANGFang-fang,LIUXiao-zhi,ZHANGBo.Application of A2O/MBR/Catalytic Ozonation in Upgrading and Reconstruction of Wastewater Treatment Plant in Chemical Industrial Park[J].China Water & Wastewater,2022,38(20):61-64.
A2O+MBR+臭氧催化氧化用于化工园区污水厂升级改造
- Title:
- Application of A2O/MBR/Catalytic Ozonation in Upgrading and Reconstruction of Wastewater Treatment Plant in Chemical Industrial Park
- Keywords:
- wastewater treatment plant in chemical industrial park; upgrading and reconstruction; catalytic ozonation
- 摘要:
- 在山东省乐陵市铁营镇循环经济工业园1×104 m3/d规模污水处理厂提标改造工程设计中，针对来水水量不稳定且水质成分复杂、污染物含量高、有毒有害物质多、难生物降解物质多、色度高等特点，以及污水处理厂无水量水质调节工艺且生化出水可溶性难降解COD高等问题，采用了增加应急事故调节池、通过更换碳源等手段强化原有A2O+MBR工艺处理效果，并增加臭氧催化氧化工艺的改造思路。试运行结果表明，出水水质可以稳定达到地表水Ⅳ类标准（TN除外）。污水处理厂提标改造工程总投资1 900万元，提标改造后直接运行成本约为1.99元/m3（不包括污泥处置、折旧、维修、膜工艺材料更换等费用）。
- Abstract:
- In the design of a wastewater treatment plant upgrading project with scale of 1×104 m3/d in Circular Economy Industrial Park, Tieying Town, Laoling City, Shandong Province, the inflow is unstable and the water quality is characterized by complex composition, high pollutant concentration, containing lots of toxic, harmful and refractory substances and high chroma. In addition, there is no wastewater flow and quality adjustment process in the wastewater treatment plant, and high soluble refractory COD in the effluent from the biochemical process is detected. To solve these problems, a reconstruction scheme was proposed, including constructing an accident regulating tank and changing the carbon source to enhance the treatment performance of the original A2O/MBR process and adding catalytic ozonation process. The results of trial operation showed that the effluent quality stably reached the surface water class Ⅳ standard (except TN). The total investment of the wastewater treatment plant upgrading project was 19 million yuan, and the direct operating cost after upgrading was approximately 1.99 yuan/m3 (excluding the cost of sludge disposal, depreciation, maintenance, membrane process material replacement, etc.).
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