Bodík I, Kratochvíl K, Herdová B, Tapia G, Gaspariková E
Department of Environmental Sciences, Slovak University of Technology, Bratislava.
Water Sci Technol. 2002;46(8):127-35.
This paper presents the pilot-scale experiments with anaerobic-aerobic treatment of municipal wastewater. As the anaerobic part of the pilot-scale system, the combination of the anaerobic baffled reactor and the anaerobic filter was used. The aerobic part of reactor was designed as an activated sludge system with the carrier of biomass (polypropylene cords). Two pilot-scale reactors (AN-I and AN-II) under real conditions were monitored. All technological parameters were identical in both reactors, but the AN-I reactor was inoculated with the psychrophilic digested sludge. The HRT in the anaerobic and aerobic parts of reactors were about 15 hours and 4 hours, respectively. The temperature in both reactors varied during the year from 4.5 to 23 degrees C. During the yearly operation time both systems removed all monitored parameters with relatively high efficiencies (COD-78.6-83.0%, BOD5-92.5-94.0 and SS-80.9-92.7%). The intensive nitrification process was observed during the whole year in both reactors (under average temperature of 5.9 degrees C in January 2000, too). The average removal of the NH4-N varied during the year from 46.4 to 87.3%. In both systems the effective denitrification process was observed, too. In the real conditions it is possible to operate such systems for a long time without removing excess sludge.
本文介绍了城市污水厌氧-好氧处理的中试规模实验。作为中试规模系统的厌氧部分，采用了厌氧折流板反应器和厌氧滤池的组合。反应器的好氧部分设计为带有生物质载体（聚丙烯绳）的活性污泥系统。对两个实际条件下的中试规模反应器（AN-I和AN-II）进行了监测。两个反应器的所有工艺参数均相同，但AN-I反应器接种了嗜冷消化污泥。反应器厌氧和好氧部分的水力停留时间分别约为15小时和4小时。两个反应器的温度全年在4.5至23摄氏度之间变化。在全年运行期间，两个系统都以相对较高的效率去除了所有监测参数（化学需氧量-78.6-83.0%，生化需氧量-92.5-94.0%，悬浮物-80.9-92.7%）。在两个反应器中全年都观察到了强烈的硝化过程（在2000年1月平均温度为5.9摄氏度的情况下也是如此）。全年氨氮的平均去除率在46.4%至87.3%之间变化。在两个系统中也观察到了有效的反硝化过程。在实际条件下，这样的系统可以长时间运行而无需去除剩余污泥。
