内环流颗粒污泥床硝化反应器的氮损失

对内环流颗粒污泥床硝化反应器的氮损失现象进行了研究,结果表明氨逃逸是氮损失的主要致因.基于双膜理论和热力学原理,构建了氨逃逸的动力学模型,并分析了氨逃逸的影响因子.该模型预测值与反应器实际运行过程中实测的氮损失量基本吻合.进一步对影响氨逃逸的因素进行了参数灵敏度分析,结果表明,pH值对氨逃逸速率的影响程度最大.

Nitrogen loss in internal-loop granular sludge bed nitrifying reactor

The nitrogen loss in internal-loop granular sludge bed nitrifying reactor was studied, and the results indicated that ammonia escape is an important factor causing nitrogen loss. Based on double film theory and thermodynamics theory, the kinetic model for ammonia escape was constructed, and factors affecting the ammonia escape were investigated. The model predictions for ammonia escape were in good agreement with the experimental data and therefore could be used to predict the nitrogen loss in the reactor. The sensitivity analysis showed that pH is the most sensitive parameter affecting ammonia escape.