Study on Pre-treatment of the Domestic Sewage by Water-dropping Aeration Zeolite Bed Technology

• 作者: GAO Chang-fei
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 曝气方式 生活污水 前处理 水床 沸石 技术 生物接触氧化法 水力停留时间
• 年，卷（期）: 2012,（10）
• 页码范围: 48-51
• 页数: 4页
• 分类号: X52

摘要

[Objective] The research aimed to study pre-treatment effect of the domestic sewage by water-dropping aeration zeolite bed technology. [Method] By water-dropping aeration manner, we conducted sewage reoxygenation. Zeolite was used to replace traditional contact oxidization filler. We inspected oxygenation effect of the water-dropping aeration manner and removal efficiency of the pollutant in sewage after biological contact oxidation. [Result] Under the experimental condition with water-dropping heights of 0.30, 0.45 and 0.60 m, average added values of the dissolved oxygen for raw water were respectively 2.4, 3.6 and 4.2 mg/L after water-dropping aeration. Under the situation with average HRT of 2 h, when COD, TN and TP of the influent were respectively 309.0-464.0, 33.3-95.0 and 4.0-7.5 mg/L, their corresponding average removal rates were 47.25%, 46.39% and 40.75%. [Conclusion] The research conducted useful attempt for high-efficiency and low-cost treatment of the domestic sewage in rural area.