研究论文
吴为中,王占生.不同生物接触氧化方法对藻类的去除效果比较及其途径分析[J].环境科学学报,2001,21(3):277-281
不同生物接触氧化方法对藻类的去除效果比较及其途径分析
- Effects on the algae removal by different biological contact oxidation processes and their mechanisms
- 基金项目：国家“九五”攻关项目(9690903)
- 作者
- 单位
- 吴为中
- 环境模拟与污染控制国家重点实验室,北京大学环境科学中心,北京 100871
- 王占生
- 清华大学环境科学与工程系,北京 100084
- 摘要：比较了3种生物接触氧化法对富营养化水源水中藻类的去除效果,探讨其去除藻类的途径.试验结果表明:淹没式曝气生物陶粒滤池(Ⅰ型)在4-6mh过滤速度条件下,对藻类总数的去除效率稳定,平均为70%左右;采用YDT弹性立体填料的中心导流筒曝气生物接触氧化法(Ⅱ型)与直接微孔曝气生物接触氧化法(Ⅲ型),在试验初期对藻类总数的去除率较低,平均去除率分别为60.2%、51.6%但随着生物膜厚度的增加,试验后期对藻类的去除效果逐步得到提高,平均达70%以上.生物膜对藻类的生物絮凝、吸附、生物膜的脱落沉降等是生物接触氧化法
- Abstract：Effects on the algae removal by three different contact oxidizations in the eutrophic raw water and their mechanisms were studied The results have showed that: biofilter Ⅰ (aerated submerged biological filter) gains a steady removal rate for the gross algae, about 70% averagely; for biofilter Ⅱ (air lift biological contact oxidization reactor) equipped with the elastic YDT as the media and biofilter Ⅲ (direct micropore aerated biological reactor), the average algae removal rates are 60.2% and 51.6% respectively within the beginning stage of the experiment, but gradually rise to more than 70% averagely during the later stage of the experiment with the increase of biofilm depth The substantial algae removal ways are bio flocculation, adsorption, detachment and sedimentation by the biofilm.
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