The step feed plus reversed A2/O biological treatment process is adopted in the first-stage project of Shanghai Volkswagen Jiading Wastewater Treatment Co.
上海大众嘉定污水处理有限公司一期工程采用多点进水倒置A2/O工艺，介绍了工艺流程、各处理单元的设计参数及运行经验。
The first stage of the project was started in 2004 with a proposed daily treatment capacity of 20 tons, using improved A2/O technology.
该系统首期工程于2004年动工建设，设计日处理污水能力20万吨，采用改良A2/O工艺。
The first stage of the project was started in 2004 with a proposed daily treatment capacity of 20 tons, using improved A2/O technology.
该系统首期工程于2004年动工建设，设计日处理污水能力20万吨，采用改良A2/O工艺。
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