摘要
[目的]研究曝气生物滤池对污水厂出水的深度处理效果。[方法]采用上流式曝气生物滤池对污水厂出水进行深度处理,研究气水比、水力负荷对处理效果的影响,分析滤池中沿程微生物活性与污染物降解规律。[结果]在气水比4∶1,水力负荷为0.35m3/（m2·h）时,COD的去除效率为54%,色度的去除率为78%,NH3-N去除率为91%,满足GB/T 18920-2002城市杂用水水质标准。试验条件下,60 cm滤料层以下为COD降解主要区域,60~90 cm为NH3-N降解主要区域。生物量沿滤池高度范围逐渐降低,并趋于稳定,微生物活性呈现先升高后降低再升高的趋势。[结论]该研究可为污水处理厂污水处理工艺提标升级提供基础数据和理论支撑。
[ Objective] The research aimed to study the advanced treatment effects of biological aerated filter on the sewage plant effluent. [ Method] Sewage plant effluent was treated with up-flow biological aerated filter, and the influences of gas-water ratio, hydraulic loading on the treatment effects was studied at the same time. In addition, the microbes activities from the inlet to the outlet and the degradation rules were analyzed. [ Result] The results showed that with gas-water ratio of 4： 1, hydraulic loading rate of 0.35 m3/（m2 h）, the COD removal rate was 55% , colority removal rate was 78% , NH3-N removal rate was 91%. The effluent could meet the GB/T 18920 -2002 urban miscellaneous water quality standards. The main COD removal area was below the 60 cm height of filter. The main NH3-N removal area was between 60 cm and 90 cm area. Microbe biomass decreased from the inlet to the outlet. The microbial activity reduced after the first increase and then increased again. [ Conclusion] This study could provide basic data and theoretical supports for the improvement of sewage treatment technology in sewage plant.
出处
《安徽农业科学》
CAS
2014年第31期11091-11094,共4页
Journal of Anhui Agricultural Sciences
关键词
生物滤池
印染废水
深度处理
Biological filter
Dyeing wastewater
Advanced treatment
