曝气生物滤池在腈纶废水处理中的应用研究

曝气生物滤池在腈纶废水处理中的应用研究
摘  要
工厂生产过程和家庭废水中大量的腈纶废水，不仅占用了大量的空间还严重危害了环境，而目前世界上已有数百多座污水处理厂，采用曝气生物滤池(Biological Aerated Filter 简称BAF)这种新工艺技术来处理废水，并有着非常广泛的用途，所以我设计实验利用曝气生物滤池处理腈纶废水。
该实验以曝气式生物滤池反应器内填料上所附生物膜中微生物的氧化分解作用为理论基础。通过采用研制的曝气生物滤池对腈纶废水进行处理，研究其性能特点和影响因素，从而找到该技术处理腈纶废水的最佳条件。
经过由曝气式生物滤池处理过的腈纶废水，对其中微生物的某些生物特性（化学需氧量（COD），氨氮（NH4+－N），pH等）进行测定实验。通过测试反应温度，反应器内的pH值和碱度，溶解氧因素，及表面水力负荷的条件来确定最佳的反应条件。最后得到最佳的反应条件为，反应温度30～36℃，pH值和碱度为7～8，溶解氧（气水比）为3：1，表面水力负荷为3.0 m3／(m2•h)。在这样的反应条件下，重复实验，得到腈纶废水的处理效率最佳。
关键字：曝气式生物滤池，腈纶废水，生物特性

Study on the Application of Biological Aerated Filter in Acrylic Fiber Wastewater Treatment
 
Abstract
So much acrylic fiber wastewater in factory production and domestic sewage, not only takes up a lot of space, but also severely threatens the environment. While currently there are over hundreds of sewage treatment plants using biological aerated filter (Biological Aerated Filter referred to as BAF) of this new technology to handle wastewater, and has a very wide range of uses, so I design an experiment using biological aerated filter of application to handle acrylic fiber wastewater.
The experiment with biological aerated filter reactor packed on microbial biofilm based on the role of oxidative decomposition. Through the use of developed BAF on acrylic wastewater treatment, study its performance characteristics and influencing factors, so find the best conditions to handle the acrylic fiber wastewater.
Some properties（Chemical Oxygen Demand(COD), Ammonium（NH4+－N）, pH et al.）of microorganisms of acrylic fiber wastewater was determined for the experiment after the BAF treats. Through testing the reaction temperature, the reactor pH and alkalinity, dissolved oxygen (air to water ratio), and hydraulic surface loading, determine the optimal reaction conditions. Finally get the best reaction conditions, the reaction temperature is 30～36℃, pH is 7～8, dissolved oxygen (air to water ratio) is 3：1, hydraulic surface loading is 3.0 m3／(m2•h). Under such conditions, repeat the experiments, to get the best treatment efficiency of acrylic fiber wastewater.
Key words: biological aerated filters, acrylic fiber wastewater, properties of microorganisms

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