制定BNR工艺最佳运行策略:模拟预测并试验验证

应用一生物营养物去除(BNR)工艺(BCFS)模型,模拟预测工艺参数对出水水质的影响,同时在实验室建立试验装置对模拟预测结果予以试验验证,得出了模拟预测与试验结果近似一致的结果.这表明,在很大程度上数学模拟技术可以替代中间或现场试验,从而被用来诊断运行问题、并制定工艺运行优化策略.模拟与试验显示,回流A与进水之比值(rA)为1.5时,生物除磷效果不受厌氧池微生物量所限制,回流A的大小与COD与N去除率无关;当回流B(rB)2后流量再行增大对提高TN去除效果作用有限,且对COD及TP去除没有影响;回流C(rC)开启与增大对COD、TP及TN的去除几乎没有影响;好氧池DO(DOR5)在1~2.5 mg.L-1以内时对COD、TP的去除均无影响,但当DO2 mg.L-1时,出水NH4+-N则升至1 mg.L-1.因此,最终确定BCFS工艺最佳运行参数为:rA=2,rB为2~2.5,rC=0,DOR5为2~2.5 mg.L-1.

Making Optimal Operation for a BNR Process: Modeling Prediction and Experimental Verification

Based on the process model of a BNR system(BCFS),the effects of operational parameters on the effluent quality were predicted by modeling,and were testified simultaneously by a lab-scale experiment,from which almost the same results in the modeling and the experiment were obtained.This means that modeling can be realizably applied to make the optimal operation schemes regardless of pilot-scale and/or full-scale experiments.Both the modeling and the experiment demonstrated that the bio-P removal performance ...