摘要
针对凡纳滨对虾循环水养殖系统生化池病原消杀后的再启动需求,本研究提出了一种基于氨氮与亚硝酸盐氮梯度投加的快速恢复方法。通过分析不同质量浓度氨氮和亚硝酸盐氮的投加效果,结合高通量测序技术对消杀前后生物膜菌群结构进行对比,明确了功能性菌群的演替规律。研究结果表明,在确保有效病原消杀的前提下,通过针对性投加营养剂,可在7~10 d内恢复生化池对氨氮和亚硝酸盐氮的部分降解能力;并入循环系统运行10~15 d后,系统处理性能可满足正常养殖水质要求。该方法实现了移动床生物膜反应器的高效再启动与功能性菌群定向培育,为循环水养殖系统消杀后的快速恢复提供了可行策略。
Aiming at the restart requirements of the biofilter in the recirculating aquaculture system of Litopenaeus vannamei after pathogen disinfection,this study proposes a rapid recovery method based on the gradient addition of ammonia nitrogen and nitrite nitrogen.By analyzing the effects of different mass concentrations of ammonia nitrogen and nitrite nitrogen,and comparing the biofilm microbial community structure before and after disinfection using high-throughput sequencing technology,the succession patterns of functional bacterial communities were elucidated.The results indicate that,under the premise of ensuring effective pathogen disinfection,targeted nutrient addition can restore partial degradation capacity of the biofilter for ammonia nitrogen and nitrite nitrogen within 7-10 days.After integrating into the recirculating system for 10-15 days,the treatment performance of the system can meet the water quality requirements for normal aquaculture.This method achieves efficient restart of the moving bed biofilm reactor and directional cultivation of functional bacterial communities,providing a feasible strategy for rapid recovery of recirculating aquaculture systems after disinfection.
作者
王钲文
唐华
牛江波
李亚松
栾雅芝
宋旸
WANG Zhengwen;TANG Hua;NIU Jiangbo;LI Yasong;LUAN Yazhi;SONG Yang(Tongwei Fishery Technology Co.,Ltd.,Chengdu,Sichuan 610041,China)
出处
《水产养殖》
2025年第12期17-23,共7页
Journal of Aquaculture
关键词
凡纳滨对虾
循环水
病原消杀
再启动方法
氨氮
亚硝酸盐氮
移动床生物膜反应器生化池
Litopenaeus vannamei
Recirculating aquaculture
Pathogen disinfection
System recovery
Ammonia nitrogen
Nitrite nitrogen
Moving bed biofilm reactor(MBBR)
