《Bioresource Technology》杂志刊登“序批式反应器间歇曝气去除屠宰场废水中的营养物质”

作者：J.P. Li, M.G. Healy, X.M. Zhan, M. Rodgers

刊物：《Bioresource Technology》，2008年11月，第16期，卷99，7644~7650页

关键词：间歇曝气；营养物去除；短程硝化；序批式反应器

摘要：本文在室温下对10L序批式反应器处理屠宰废水的性能进行了研究。进水污水的化学需氧量（COD）为4672 ± 952 mg/L，总氮（TN）为356 ± 46 mg/L，总磷（TP）为29 ± 10 mg/L。整个循环过程为8小时，包括4个阶段：进水7分钟，反应393分钟，静置30分钟，停运50分钟。在反应器反应阶段，间歇曝气的进气量为0.8 L/min，每运行50分钟，间歇50分钟，反复运行4次。进水有机负荷率为1.2gCOD/(L d)，出水的COD，TN，TP的平均浓度分别为150 mg/L，15mg/L和0.8mg/L，这表明COD，TN，TP的去除率分别为96%，96% 和99%。对不同阶段进行分析，结果表明生物磷的吸收发生在第一次曝气时期，氮是通过随后的短程硝化和反硝化作用去除的。根据氮平衡可知，反硝化作用和生物吸收对于氮的去除所占比例分别为66%和34%。

Nutrient removal from slaughterhouse wastewater in an intermittently aerated sequencing batch reactor

Authors: J.P. Li, M.G. Healy, X.M. Zhan, M. Rodgers

Journal: Bioresource Technology, November 2008, Volume 99, Issue 16, Pages 7644-7650

Key word: Intermittent aeration; Nutrient removal; Partial nitrification; Sequencing batch reactor

Abstract: The performance of a 10 L sequencing batch reactor (SBR) treating slaughterhouse wastewater was examined at ambient temperature. The influent wastewater comprised 4672 ± 952 mg chemical oxygen demand (COD)/L, 356 ± 46 mg total nitrogen (TN)/L and 29 ± 10 mg total phosphorus (TP)/L. The duration of a complete cycle was 8 h and comprised four phases: fill (7 min), react (393 min), settle (30 min) and draw/idle (50 min). During the react phase, the reactor was intermittently aerated with an air supply of 0.8 L/min four times at 50-min intervals, 50 min each time. At an influent organic loading rate of 1.2 g COD/(L d), average effluent concentrations of COD, TN and TP were 150 mg/L, 15 mg/L and 0.8 mg/L, respectively. This represented COD, TN and TP removals of 96%, 96% and 99%, respectively. Phase studies show that biological phosphorus uptake occurred in the first aeration period and nitrogen removal took place in the following reaction time by means of partial nitrification and denitrification. The nitrogen balance analysis indicates that denitrification and biomass synthesis contributed to 66% and 34% of TN removed, respectively.

原文链接：http://www.sciencedirect.com/science/article/pii/S0960852408001168