侧流磷回收强化低碳源污水脱氮除磷效果的模拟与实验研究  

Modeling and experimental study on enhancing effect of BNR by phosphate recovery in side-stream of anaerobic supernatant

作　　者：郝晓地[1] 衣兰凯[1] 付昆明[1] 

机构地区：[1]北京建筑工程学院可持续环境生物技术研发中心,北京100044

出　　处：《环境工程学报》2013年第1期231-236,共6页Chinese Journal of Environmental Engineering

基　　金：北京市属高等学校人才强教深化计划--高层次人才资助项目(PHR20100508)

摘　　要：以实验室营养物(BNR)去除工艺为研究对象,通过模拟预测与实验验证,对侧流磷回收强化低碳源污水脱氮除磷效果的影响进行研究。实验结果与模拟预测均显示,在低碳源生活污水(BOD5/TKN=3.2,COD/TKN=4.8,COD/TP=48.9)前提下,厌氧上清液侧流磷沉淀/回收可以使得出水氮、磷达标(TP≤0.5 mg P/L、TN≤15 mg N/L)。研究结果表明,侧流磷回收可以相对提高后续生物脱氮除磷所需C/N、C/P比,从而强化低碳源污水生物营养物去除效果。模拟预测与实验验证几乎一致的结果表明,数学模拟技术完全可以取代传统实验,对所关心的工艺运行问题进行准确预测。Based on a lab-scale biological nutrient removal （BNR） process, wastewater from low-carbon sources was applied to investigate its phosphorus removal along with phosphate recovery on the side-stream of an- aerobic supernatant, which was conducted by both modeling prediction and experiments. Both results demonstra- ted that phosphate recovery on the side-stream of anaerobic supernatant could effectively make the effluent reach to the discharge standards（TP≤〈0.5 mg P/L, TN ≤ 15 mg N/L） under real wastewater conditions （BODJTKN = 3.2, COD/TKN = 4.8 and COD/TP = 48.9）. The results also indicate that phosphate recovery could relatively increase the ratios of C/N and C/P, and thus enhance the BNR behaviors. The modeling prediction in accord- ance with the experimental results reveals that modeling prediction can completely replace conventional experi- ments for understanding process concerns.

关 键 词：低碳源污水 生物营养物去除(BNR) 厌氧上清液 侧流比 磷回收 数学模拟 

分 类 号：TU992[建筑科学—市政工程]