【作者】 张晔；

【导师】 姜应和；

【作者基本信息】 武汉理工大学 ， 市政工程， 2003， 硕士

【摘要】 针对我国当前及今后一段时期内污水治理资金严重短缺的状况，着眼于寻求高效低耗的污水处理工艺，本文设计了一体化微氧气提内循环流化床反应器模型并以此进行了试验研究。 模型设计过程中运用的基于伯诺里方程的能量试算模式，描述了升流区流速随升流区截面积占反应区总截面积中的比例而变化的规律，可用于该类型反应器反应区的放大设计。示踪实验显示该模型体积利用率高(95.5％)，水力学结构良好。 采用模拟武汉市城市污水人工配制的试验污水，成功实现了反应器的挂膜启动，同时证明了“好氧预挂膜”以及“快速排泥法”确有强化挂膜启动效果的作用。 通过模型正交试验，对可能影响反应器运行效果的因素进行了影响性评价，并据此推荐了三组较佳的操作条件。 提出了内循环流化床处理低浓度污水的宏观、微观动力学模型。其中宏观模型与CSTR反应器反应动力学模型一致。更多还原

【Abstract】 In order to develop some wastewater treatment processes with less energy consumption to solve financial problem in wastewater treatment plants, an inner circulation airlift fluidized bed reactor was assembled and a series of experiment was done with it.Based on Bernoulli equation, the energy calculation method used to design the reactor model can describe the velocity change in up-flow zone along with proportion change of area of up-flow section to the area of total section, can be used for magnification design of such kind of reactor. It was shown in tracing experiment that the model is with high volume availability, which means its structure is proper for hydraulics.The raw wastewater of the experiment was simulative waste-water prepared according to the character of municipal wastewater in Wuhan city. And the biofilm reactor was started up successfully. It was also proved that the methods, such as Start-up Under Aerobic Condition in Advance and Draining Activated Sludge Rapidly, do enhance adhering between microbe and carriers.The factors that might affect the operation of the reactor model were assessed through orthogonal experiment. Further more, some probably optimal operation conditions were recommended based on the data of the orthogonal experiment.The macroscopical and microcosmic kinetics model of degrading organic in the wastewater with low contaminant concentration in the inner circulation fluidized bed biofilm reactor were deduced. And the former is same as its counterpart in CSTR.更多还原