温度对藻菌好氧颗粒污泥除污性能及附加产物的影响  

Influence of Temperature on Decontamination Efficiency and By-products Generation of Agal-Bacterial Granular Sludge

作　　者：韩佳言 纪元 柳文浩 刘东方[2] 黄文力[2] HAN Jia-yan;JI Yuan;LIU Wen-hao;LIU Dong-fang;HUANG Wen-li(Tianjin Huabo Water Co.Ltd.,Tianjin 300040,China;College of Environmental Scienceand Engineering,Nankai University,Tianjin 300350,China)

机构地区：[1]天津市华博水务有限公司,天津300040 [2]南开大学环境科学与工程学院,天津300350

出　　处：《中国给水排水》2024年第17期16-22,共7页China Water & Wastewater

基　　金：国家自然科学基金资助项目(52060005)。

摘　　要：研究了低温(12~15℃)和室温(20~25℃)条件对藻菌好氧颗粒污泥(ABGS)的形成、营养物质去除效果和附加产物的影响。在低温、光照条件下运行30 d,好氧颗粒污泥(AGS)中没有检测到叶绿素a(Chl-a),颗粒污泥的粒径(0.8~0.9 mm)没有明显变化,说明低温下AGS不能快速成长为ABGS。之后将温度升高到室温,第40天(即室温第10天)观察到绿色的藻菌颗粒,运行70 d后获得成熟的ABGS,Chl-a平均浓度为5.73 mg/gVSS。温度的升高和藻类的生长显著增大了ABGS粒径(0.9~2.3 mm)。与低温阶段相比,室温阶段ABGS对TIN的平均去除率从50%提高到了64%,ABGS中类藻酸盐(ALE)和油脂的含量分别提高了103.2%和95.6%。高通量测序结果表明,温度和微藻的生长影响了细菌群落结构的分布和丰度,ABGS中的优势藻为小球藻、索囊藻属和栅藻。This paper investigated the impacts of low temperature(12-15℃)and room temperature(20-25℃)on the formation,nutrient removal,and by-product generation of agal-bacterial granular sludge(ABGS).After 30 days of operation at low temperature and illumination,no chlorophyll-a(Chl-a)was detected in the aerobic granular sludge(AGS),and the particle size of the AGS remained relatively constant at 0.8-0.9 mm,indicating limited formation potential for ABGS under low temperature condition.After the temperature was increased to ambient levels,green algal-bacterial granules were observed on Day 40(the 10th day at room temperature),and mature ABGS with an average Chl-a of 5.73 mg/gVSS were obtained after 70 days of operation.The rise in temperature and algae growth led to a significant increase in the particle size of ABGS(0.9-2.3 mm).In comparison with the low temperature stage,the TIN average removal rate of ABGS at room temperature increased from 50%to 64%.Moreover,the alginate-like exopolysaccharide(ALE)and lipid contents in ABGS increased by 103.2%and 95.6%,respectively.High-throughput sequencing results revealed that the distribution and abundance of bacterial community composition were influenced by temperature and microalgae growth, with Chlorella,Choricystis, and Scenedesmus being the dominant algae in ABGS.

关 键 词：藻菌好氧颗粒污泥 微藻 温度 类藻酸盐 油脂 

分 类 号：TU992[建筑科学—市政工程]