BAF曝气生物滤池

BAF AERATED BIOLOGICAL FILTER

设备概述/

Summary of the equipment

曝气生物滤池技术(简称BAF)是八十年代末和九十年代初兴起的水处理工艺，是在生物接触氧与生物活性炭的技术基础 上开发出的一种高效、低耗的生物反应器。该技术首先应用于污水深度(三级)处理并回用的场合，后发展成既可应用于 微污染水源水的预处理(如去除有机污染),又能直接用于城市污水二级处理领域的新技术。自80年代后在欧洲建成第 一座使用曝气生物滤池技术处理污水的二级处理厂后，已在欧美和日本等发达国家广为流行,我国在21世纪初，大连城 市污水厂引进了该项技术，目前世界上已有一百多座大大小小的污水处理厂应用了曝气生物滤池技术。

Biological aerated filter (BAF) is rising in the early eighty s and 'ninety s water treatment process, is in the biological contact oxygen and biological activated carbon technology developed on the basis of a kind of high efficiency, low consumption of bioreactor. The technology is applied to the first sewage depth (level 3) treatment and recycle, later developed into the slightly polluted source water can be used in the pretreatment, such as removal of organic pollution, and can directly used for urban sewage secondary processing in the field of new technologies. Built since the 80 s in Europe after the first use of aeration biological filter technology after the secondary sewage treatment plant, has been popular in Europe and the United States and Japan and other developed countries, our country in the 21st century, dalian municipal sewage plant introduced this technology, the world has more than one hundred large and small, the application of biological aerated filter technology in wastewater treatment plant.

设备恃点/

Characteristics of the equipment

1、 占地少：（为传统活性污泥法的1/2 ~ 1/3）。

2、 运行费用低：水气接触时间长，氧传递效率高；水力停留时间 短，气水比低（2 ~ 5：1）。

3、 生物活性高生物膜保持较高的活性;生物量大，处理效率高，水 力停留时间为30-120分钟。

4、 生物降解和吸附作用共存。

5、 处理水质高:处理后污水可达回用水（工业或杂用水）标准。

6、 运行管理方便：便于实现自动控制，操作较简单。

1. Small area: (1/2 ~ 1/3 of traditional activated sludge method).

2. Low operating costs: long contact time of water and gas and high efficiency of oxygen delivery; The hydraulic retention time is short and the gas-water ratio is low (2 ~ 5:1).

3. High biological activity: high activity of biofilm; The biomass is large, the processing efficiency is high, and the hydraulic stay time is 30- 120 minutes.

4. Coexistence of biodegradation and adsorption.

5. High water quality: after treatment, water can be reached back to water (industrial or mixed water) standard.

6. Convenient operation and management: easy to realize automatic control, easy to operate.