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Study of oxygen transfer processes improvement for domestic wastewaters treatment

机译：改善生活污水中氧转移过程的研究

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In aerated processes, the oxygen transfer was limited by the presence of the suspended matter as colloid and the dissolved matter, which might decrease the biological degradation effectiveness. In this publication, three series of tests were conducted to study possibilities to reduce these matters: bacterial adaptation which was conducted in a biological aerated filter, adsorption/biosorption conducted on a biological aerated filter with a biofilm of adapted bacteria and percolation in a bioreactor with a packed plastic media. All the tests carried out gave convincing results concerning turbidity and chemical oxygen demand, as parameters limiting the oxygen transfer for a better biodegradation. The advanced adaptation improved their elimination. So, all these treatment techniques could be used as pretreatment processes; in addition, they required very little energy, particularly adsorption/biosorption and percolation.
机译：在充气过程中，氧气的传输受到悬浮物（如胶体）和溶解物的存在的限制，这可能会降低生物降解效率。在该出版物中，进行了三个系列的试验，以研究减少这些问题的可能性：在曝气生物滤池中进行细菌适应，在曝气生物滤池上用适应细菌的生物膜进行吸附/生物吸附，并在生物反应器中进行渗滤。包装好的塑料介质。进行的所有测试均给出了有关浊度和化学需氧量的令人信服的结果，这些参数限制了氧的转移，以实现更好的生物降解。先进的改编改进了它们的消除。因此，所有这些处理技术都可以用作预处理过程。此外，它们所需的能量非常少，尤其是吸附/生物吸附和渗滤。

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