菌藻共生系统对土霉素生产废水的处理效能  

Performance of the bacterial-algal symbiosis system on treating oxytetracycline production wastewater

作　　者：余江天 乔蕾 周思宁 殷万成 贾妍艳 吕慧[2] YU Jiangtian;QIAO Lei;ZHOU Sining;YIN Wancheng;JIA Yanyan;LYU Hui(Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control,Guilin University of Technology,Guilin 541006,China;School of Environmental Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China;Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin 541006,China;School of Ecology,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]桂林理工大学,广西环境污染控制理论与技术重点实验室,桂林541006 [2]中山大学环境科学与工程学院,广州510275 [3]桂林理工大学,广西岩溶地区水污染控制与用水安全保障协同创新中心,桂林541006 [4]中山大学生态学院,广州510275

出　　处：《环境工程学报》2024年第7期1792-1802,共11页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金重点项目(52131001)。

摘　　要：土霉素生产废水因其可生化性差、生物抑制性强,在利用传统活性污泥法处理过程中常面临能耗高、效能低等一系列问题。相比之下,作为一种新兴工艺,菌藻共生体系因其具有高效低耗的特点,有望在传统生物污水处理领域实现突破。然而,目前利用菌藻共生体系处理抗生素生产废水的研究仍处于起步阶段,相关应用尚未得到广泛开展。因此,该研究通过设置不同进水土霉素(OTC)浓度,对比研究了好氧活性污泥和菌藻共生体系在处理土霉素生产废水方面的性能差异。结果表明,在有无OTC胁迫的情况下,菌藻共生体系在废水处理效能与系统稳定性方面均优于活性污泥体系。当OTC质量浓度分别为10 mg·L^(-1)和50 mg·L^(-1)时,菌藻共生体系受到的影响相对有限,COD去除率维持在75%左右,而NH_(4)^(+)-N去除率均保持在97%以上;然而,活性污泥体系则表现出显著的负面影响,具体表现为COD、氮素和OTC的去除率下降以及胞外聚合物含量和超氧化物歧化酶活性的显著波动。当OTC质量浓度增加至100 mg·L^(-1)和300 mg·L^(-1)时,2种体系均表现出明显的抑制效应,不仅COD和NH_(4)^(+)-N的去除率大幅降低,而且污泥微生物胞外聚合物中的多糖、蛋白质含量以及超氧化物歧化酶活性显著减少,从而影响了系统的稳定性。Due to its poor biodegradability and strong biological inhibition,the oxytetracycline(OTC)production wastewater poses challenges for conventional activated sludge processes facing high energy consumption and low efficiency.In contrast,as an emerging technology,the bacterial-algal symbiosis system are expected to achieve breakthroughs in the field of conventional biological wastewater treatment due to its high efficiency and low energy consumption.However,the research on using bacterial-algal symbiosis system to treat antibiotic production wastewater is still in its infancy,and related applications have not yet been widely developed.Therefore,in this study,the performance of aerobic activated sludge and bacterial-algal symbiosis systems was systematically investigated and compared on treating OTC production wastewater with different influent OTC concentrations.The results showed that the bacterial-algal symbiosis systems outperformed the activated sludge systems in terms of wastewater treatment efficiency and system stability with or without OTC stress.When the OTC concentration was 10 and 50 mg·L^(-1),the bacterial-algal symbiosis systems were relatively unaffected,COD and NH_(4)^(+)-N removal rates maintained around 75%and over 97%,respectively.However,the activated sludge system exhibited significant negative impacts,including reductions in the removal rates of COD,nitrogen,and OTC,as well as notable fluctuations in extracellular polymeric substance content and superoxide dismutase activity.When the OTC concentrations increased to 100 and 300 mg·L^(-1),both systems showed obvious inhibitory effects.Not only did the removal rates of COD and NH_(4)^(+)-N significantly decrease,but also the polysaccharide and protein content in the extracellular polymeric substances of the sludge microorganisms decreased significantly,as well as superoxide dismutase activity,thereby affecting the stability of the systems.

关 键 词：菌藻共生体系 抗生素生产废水 高氨氮 

分 类 号：X703[环境科学与工程—环境工程]