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文献综述
A/A/O工艺与生物炭吸附工艺的改良升级进展摘要:厌氧/缺氧/好氧工艺简称A/A/O工艺，三者结合后污染物去除效率高，运行稳定，能较好的耐受冲击负荷。
三种不同的环境条件和不同种类微生物菌群的有机配合，能同时具有去除有机物、脱氮除磷的功能。
生物质炭具有来源广、比表面积大、孔隙量大、稳定性强等特点被广泛应用，而经过物理、化学、生物改性后的生物炭将获得更加良好的表面物理化学性质，从而提高其对于污染物的吸附处理效果。
本文对A/A/O工艺及其升级改进现况以及改性生物炭的应用进行介绍。
关键词:污水处理；氮、磷去除；A/A/O工艺；生物炭；改良升级Progress in improvement and upgrading of A / A / O process and biochar adsorption processAbstract:Anaerobic / anoxic / aerobic process is referred to as A / A / O process. After the combination of the three processes, the pollutant removal efficiency is high, the operation is stable, and the impact load can be well tolerated. The organic combination of three different environmental conditions and different kinds of microbial flora can simultaneously remove organic matter, nitrogen and phosphorus. Biochar is widely used because of its wide source, large specific surface area, large pore volume and strong stability. After physical, chemical and biological modification, biochar will obtain better surface physical and chemical properties, so as to improve its adsorption effect for pollutants. In this paper, the A / A / O process and its upgrading and improvement status, as well as the application of modified biochar are introduced.Key words:wastewater treatment; nitrogen and phosphorus removal; A / A / O process; biochar; improvement and upgrading1、前言如今，为响应绿水青山就是金山银山的号召，在新的环境影响大评估也随之到来，因此各地城镇污水排放与处理标准不断提高，之前的工艺已过时或无法达到现有标准。
如何解决当前问题，改进技术，提高污水中各种杂质的去除率，或已成为众多水处理项目和研究的中心议题。
厌氧/缺氧/好氧工艺(A/A/O)结构简单，使用广泛，甚至可完全建成地下或半地下式设施，能有效去除COD、BOD、氮磷，为社会带来良好的经济与生态效益[1]。
但传统上的A/A/O技术中DO 和硝酸盐对聚磷菌厌氧释磷存在影响，碳源与曝气量需求大，且反硝化菌和聚磷菌对碳源的竞争问题仍旧存在[2]。
因此，对A/A/O工艺进行改进迫在眉睫，需寻求方法改进处理效果，解决原有问题，提升净水质量[3]。
