厌氧滤池和曝气生物滤池集成系统的动力学分析与实验验证。

A kinetic analysis and experimental validation of an integrated system of anaerobic filter and biological aerated filter.

机构信息

Radiation Research Division for Industry & Environment, Korea Atomic Energy Research Institute, 1266 Sinjeong, Jeongeup, Jeollabuk-do 580-185, Republic of Korea.

出版信息

Bioresour Technol. 2011 Nov;102(22):10371-6. doi: 10.1016/j.biortech.2011.09.005. Epub 2011 Sep 8.

DOI:10.1016/j.biortech.2011.09.005

PMID:21958523

Abstract

An anaerobic/aerobic filter (AF/BAF) system was developed treating dairy wastewater. The influent was blended with recirculated effluent to allow for pre-denitrification in the AF followed by nitrification in the BAF. The recirculation ratio ranged 100-300%. The average chemical oxygen demand (COD) removal efficiency was 79.8-86.8% in the AF and the average total nitrogen removal efficiency was 50.5-80.8% in the AF/BAF system. Steady-state mass balances on the AF were used to analyze removal kinetics in the AF. The kinetic model values for effluent COD in the AF were overestimated as compared with experimental data. The integrated suspended and attached biomass growth rates in the AF were estimated. The specific growth rate of the integrated biomass at each recirculation ratios was 0.6213, 0.6647, and 1.20831/day, respectively. The increase in specific growth rate corresponded to increases in biomass sloughing as the recirculation ratio increased.

摘要

开发了一种厌氧/好氧滤池（AF/BAF）系统来处理乳品废水。进水与循环回流混合，使 AF 中的预反硝化，然后在 BAF 中硝化。循环比范围为 100-300%。AF 中的平均化学需氧量（COD）去除效率为 79.8-86.8%，AF/BAF 系统中的平均总氮去除效率为 50.5-80.8%。使用 AF 的稳态质量平衡来分析 AF 中的去除动力学。与实验数据相比，AF 中出水 COD 的动力学模型值被高估了。估计了 AF 中悬浮和附着生物量的综合增长率。在每个循环比下，综合生物量的特定生长率分别为 0.6213、0.6647 和 1.20831/天。随着循环比的增加，特定生长率的增加对应于生物量剥落的增加。