为探寻菌藻结合实现光驱动同步硝化反硝化(SND)生化工艺的应用,在自制的AAO+沉淀池的反应器中通过人工配制进水的方式模拟对现实生活污水处理.经过四个月的运行成功实现光驱动SND生化工艺的稳定运行,在提供光照的条件下,降低约 42.86%的曝气量出水依旧能达到一级 A 排放标准.培养过程中污泥产生大量的蛋白质(PN)和多糖(PS),PN/PS由 2.89 增长到 5.05,实现污泥颗粒化,由于颗粒内部氧气传质的影响,实现内层缺氧,外层好氧的结构,为氨化细菌(AOB)、硝化细菌(NOB)和反硝化细菌的生长提供了适宜的场所,从而实现同步硝化反硝化(SND)脱氮过程的运行.根据计算得出,最终培养出的菌藻共生(ABS)系统相比原有系统曝气能耗更低,且具有更大的资源化潜力和脱氮潜力.
Study on Biochemical Process of SND Driven by Optical
To explore the application of microbial-algal symbiosis in achieving light-driven simultaneous nitrification-denitrification(SND)bio-process,a reactor with self-made AAO and sedimentation tank was constructed to simulate real-life wastewater treatment using artificially prepared influent.After four months of operation,stable SND bio-process driven by light was successfully achieved.Under light conditions,a reduction of approximately 42.86%in aeration was achieved while still meeting the Class A effluent discharge standards.During the cultivation process,the sludge generated a large amount of protein(PN)and polysaccharides(PS).The PN/PS ratio increased from 2.89 to 5.05,facilitating sludge granulation.The internal oxygen mass transfer within the granules resulted in an anoxic zone in the inner layer and an aerobic zone in the outer layer,providing suitable conditions for the growth of ammonia-oxidizing bacteria(AOB),nitrifying bacteria(NOB),and denitrifying bacteria,enabling the operation of simultaneous nitrification-denitrification(SND)nitrogen removal process.Based on calculations,the final cultured microbial-algal symbiosis(MABS)system exhibited lower aeration energy consumption compared to the original system,while demonstrating greater potential for resource utilization and denitrification.
optical drivesimultaneous nitrification and denitrificationbacteria and algae symbiosisapplication potential
NETL
NSTL
万方数据
维普
