[1]王雪健,王艳,吉世明,等.改性沸石固定微藻用于鱼塘养殖尾水脱氮[J].中国给水排水,2025,41(7):95-101.
　WANGXue-jian,WANGYan,JIShi-ming,et al.Modified Zeolite-immobilized Microalgae for Nitrogen Removal from Fishpond Wastewater[J].China Water & Wastewater,2025,41(7):95-101.
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改性沸石固定微藻用于鱼塘养殖尾水脱氮

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第7期 页码: 95-101 栏目: 出版日期: 2025-04-01
Title:
Modified Zeolite-immobilized Microalgae for Nitrogen Removal from Fishpond Wastewater
作者:
王雪健1， 王艳1， 吉世明2， 朱斌2， 闫志成1， 万金泉1
（1.华南理工大学 环境与能源学院，广东 广州 510006；2.广东顺控自华科技有限公司，广东 佛山 528300）
Author(s):
WANG　Xue-jian1， WANG　Yan1， JI　Shi-ming2， ZHU　Bin2， YAN　Zhi-cheng1， WAN　Jin-quan1
（1. College of Environment and Energy， South China University of Technology， Guangzhou 510006， China； 2. Guangdong Shunkong Zihua Technology Co. Ltd.， Foshan 528300， China）
关键词:
鱼塘养殖尾水;  低C/N;  生物沸石;  壳聚糖;  小球藻;  脱氮
Keywords:
fishpond wastewater;  low carbon to nitrogen ratio (C/N);  biozeolite;  chitosan;  Chlorella;  nitrogen removal
摘要:
为解决低C/N鱼塘养殖尾水难以高效脱氮的问题，制备了壳聚糖-Na型双改性多孔活化沸石（Na-Zeo@CS）作为小球藻固定材料，比较天然斜发沸石、壳聚糖和Na-Zeo@CS对小球藻的吸附沉降效率，并在此基础上对负载小球藻的Na-Zeo@CS降解含氮污染物的效果进行研究。结果表明，制备的Na-Zeo@CS在投加量为4.0 g/L、水体pH为5~7、藻初始密度为0.2~0.6 g/L的条件下具有较好的藻细胞吸附沉降效果。负载小球藻的Na-Zeo@CS在72 h后对水中NH4+-N和NO3--N的去除率分别为83.81%和45.02%，小球藻通过解附Na-Zeo@CS吸附的NH4+-N完成生物再生，经再生后的Na-Zeo@CS对NH4+-N的吸附容量最高可达再生前的86.45%。采用扫描电子显微镜（SEM）对产物进行表征，观察到Na-Zeo@CS表面附着了大量小球藻，分析认为Na-Zeo@CS通过静电吸引和网捕絮凝作用吸附小球藻，降低了藻细胞表面的电荷，使其脱稳沉降。
Abstract:
To address the challenge of efficiently removing nitrogen from fishpond wastewater with a low carbon to nitrogen (C/N) ratio, chitosan-Na type double modified porous activated zeolite (Na-Zeo@CS) was prepared as an attached growth material for Chlorella. The adsorption and sedimentation efficiencies of natural clinoptilolite, chitosan, and Na-Zeo@CS on Chlorella were compared. Additionally, the performance of Na-Zeo@CS loaded with Chlorella in degrading nitrogen?containing pollutants was investigated. The prepared Na-Zeo@CS demonstrated excellent adsorption and sedimentation performance for algal cells when the dosage was 4.0 g/L, the pH range was 5 to 7, and the initial algal density was between 0.2 g/L and 0.6 g/L. After 72 hours, the removal efficiencies of NH4+-N and NO3--N by Na-Zeo@CS loaded with Chlorella were 83.81% and 45.02%, respectively. Chlorella facilitated biological regeneration through the desorption of NH4+-N from Na-Zeo@CS. The adsorption capacity of the regenerated Na-Zeo@CS for NH4+-N was restored to 86.45% of its original capacity prior to regeneration. The products were characterized using scanning electron microscopy (SEM). Observations revealed a significant number of Chlorella adhered to the surface of Na-Zeo@CS. Analysis indicated that the adsorption mechanism involved electrostatic attraction and net flocculation, which reduced the surface charge of the algal cells, leading to destabilization and subsequent settling.

相似文献/References:

[1]李惠平,庞维海,谢丽,等.低C/N污水处理过程中有机碳源的特性及转化分析[J].中国给水排水,2022,38(7):69.
　LIHui-ping,PANGWei-hai,XIELi,et al.Characteristics and Conversion of Organic Carbon Sources during Treatment of Municipal Wastewater with Low Carbon to Nitrogen Ratio[J].China Water & Wastewater,2022,38(7):69.

更新日期/Last Update: 2025-04-01