摘要
为了降低养殖池塘内的氨氮含量,同时减少在养殖过程中硝化细菌的投加量,文章采用鱼蚌混养技术与细菌挂膜技术对养殖水体进行原位调控。利用模拟试验确定最佳鱼蚌比与填料类型;结合试验结果,将挂膜完成的碳纤维投放入模拟养殖塘内,依据水产品品质与水环境化学结果,确定最佳填料投放密度,并对挂膜细菌进行微生物群落分析,对氮、磷归趋进行分析。结果表明,调整鱼与三角帆蚌比为2∶1,在150 L的模拟养殖塘中设置10根长1 m,组合填料片间距为10 cm的碳纤维填料时,模拟塘中TN、NO_(2)^(-)-N、TP的质量浓度分别为(8.03±2.03)、(0.03±0.02)、(9.03±2.04)mg/L,可满足淡水养殖水质要求,同时使草鱼、鲫、鲢和鳙鱼的生长状况优良,具有较高的营养价值。文章提出的鱼蚌混养与微生物膜联合的原位调控养殖水体水质的技术,并对其鱼蚌混养比例和填料投放比例进行了优化,为鱼蚌混养体系的发展与改进提供理论参考。
To reduce ammonia nitrogen and the adding of nitrifying bacteria during the aquaculture process,the present article adopted the combination of bacterial biofilm and polyculture of Hyriopsis cumingii and fishes to in-situ remediation of aquaculture water.The optimum ratio of fish to mussel and the type of filler were determined by simulation experiments.Based on the results of these previous experiments,the optimal filler density of carbon fiber was determined based on the chemical analysis of aquatic product quality and aquaculture water indicators.In the end of the experiments,the microbial community,and the budgets of nitrogen and phosphorus were analyzed.The experiment results showed that the suitable fish-mussel stocking ratio was 2∶1 in the integrated culture.Compared with felt,carbon fiber filler was more effective in purifying the aquaculture wastewater.Under these conditions,when 10 carbon fiber fillers of 1 m long were installed in the simulated culture pond,the best quality of aquatic products and water purification effect can be achieved.The concentrations of TN,NO_(2)^(-)-N and TP in the pond were(8.03±2.03),(0.03±0.02),(9.03±2.04)mg/L,respectively,meeting the requirements of freshwater fish culture.In this paper,in-situ control of water quality in fish-mussel polyculture and biofilm was proposed.Meanwhile,this paper optimized the fish-mussel stocking ratio and filler′s filling ratio.It provides a theoretical reference for the development of the integrated polyculture of Hyriopsis cumingii and fishes.
作者
薛琼
梁文伯
耿冰
汪雅文
宋海亮
杨小丽
XUE Qiong;LIANG Wenbo;GENG Bing;WANG Yawen;SONG Hailiang;YANG Xiaoli(Nanjing Municipal Academy of Ecological and Environment Protection Science,Nanjing 210013,China;School of Civil Engineering,Southeast University,Nanjing 211189,China;Shanghai National Engineering Research Center of Urban Water Resources Co.,Ltd.,Shanghai 200082,China;School of Environment,Nanjing Normal University,Nanjing 210023,China)
出处
《净水技术》
CAS
2023年第12期128-141,共14页
Water Purification Technology
基金
国家重点研发计划项目(2019YFD1100205)
国家水体污染控制与治理科技重大专项(2017ZX07202-004)。
关键词
养殖水体
鱼蚌混养
碳纤维
硝化细菌制剂
水质净化
aquaculture water
fish mussels culture
carbon fiber
nitrifying bacteria preparation
water purification
