景观型与蔬菜型水平潜流湿地除磷动力学模型

发布时间：2018-03-28 20:12

本文选题：景观型、蔬菜型水平潜流湿地　切入点：总磷　出处：《化工学报》2016年05期

【摘要】：利用景观型和蔬菜型水平潜流湿地净化经生化处理后的生活污水尾水,进行湿地除磷动力学模型研究。对比分析不同湿地单元的除磷效率。为优化湿地除磷设计,采用一级动力学模型和Monod模型模拟除磷效果,对比模拟准确性,讨论水温、水力负荷与模型反应速率常数间关系,并建立湿地除磷模型构建式。结果表明,景观型湿地除磷能力顺序:美人蕉单元再力花单元鸢尾单元,蔬菜型湿地:空心菜单元茭白单元番茄单元,除磷效果差异归因于不同类植物的生物量区别。Monod模型(模型效率值ME:0.76~0.86)对湿地除磷的预测较一级动力学模型(ME:0.53~0.72)具有更高准确性。总磷面积去除率随水温的降低而减小,Arrhenius拟合结果表明,美人蕉(?=1.006)、再力花(?=1.008)和空心菜(?=1.006)单元Kmax对水温变化不敏感,水温对鸢尾(?=1.015)和茭白(?=1.014)单元除磷效率有较大影响。Kmax20与水力负荷间存在显著正相关性,两者符合乘幂方程(R2:0.657;0.805)关系。考虑了水温和水力负荷因素的Monod模型构建式,对试验湿地除磷预测具备准确性。
[Abstract]:Purification after the biochemical treatment of sewage tail water use landscape type and vegetable type of wetland horizontal subsurface flow wetland, phosphorus dynamics model. Analysis of the phosphorus removal efficiency of different wetland unit contrast. In order to optimize the design of the wetland removal, kinetic model and Monod model to simulate the effect of phosphorus removal, comparing the simulation accuracy, discussed water temperature, hydraulic loading the relationship between the model and the reaction rate constant, and the establishment of wetland construction type phosphorus removal model. The results show that the wetland landscape removal capability in order: Canna unit Thalia iris unit unit: unit type wet vegetable spinach tomato biomass Zizania unit unit. The difference between.Monod model and phosphorus removal was attributed to the difference of different plants (model the efficiency value of ME:0.76~0.86) prediction on wetland phosphorus removal is a first-order kinetic model (ME:0.53~0.72) has higher accuracy. The total phosphorus removal rate with the water area The effect of fitting results of Arrhenius show that Canna (? =1.006), Thalia (? =1.008) and spinach (=1.006? Kmax) unit is not sensitive to changes in water temperature and water temperature on the iris (? =1.015) and Zizania latifolia (? =1.014) unit has a great influence on the phosphorus removal efficiency has a significant positive correlation between.Kmax20 and hydraulic the load between the two with the power equation (R2:0.657; 0.805). Considering the construction of Monod model of water temperature and hydraulic load factors, to test prediction accuracy. With the removal of Wetland

【作者单位】：东南大学能源与环境学院;
【基金】：国家科技支撑项目(2013BAJ10B13)~~
【分类号】：X703

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