[1]韩佳言,纪元,柳文浩,等.温度对藻菌好氧颗粒污泥除污性能及附加产物的影响[J].中国给水排水,2024,40(17):16-22.
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温度对藻菌好氧颗粒污泥除污性能及附加产物的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第40卷 期数: 2024年第17期 页码: 16-22 栏目: 出版日期: 2024-09-01
Title:
Influence of Temperature on Decontamination Efficiency and By-products Generation of Agal-Bacterial Granular Sludge
作者:
韩佳言1， 纪元2， 柳文浩2， 刘东方2， 黄文力2
（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）
Author(s):
HAN　Jia-yan1， JI　Yuan2， LIU　Wen-hao2， LIU　Dong-fang2， HUANG　Wen-li2
（1. Tianjin Huabo Water Co. Ltd.， Tianjin 300040， China； 2. College of Environmental Science and Engineering， Nankai University， Tianjin 300350， China）
关键词:
藻菌好氧颗粒污泥;  微藻;  温度;  类藻酸盐;  油脂
Keywords:
algal-bacterial granular sludge;  microalgae;  temperature;  alginate-like exopolysaccharide;  lipid
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。
Abstract:
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.

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更新日期/Last Update: 2024-09-01