摘要
为优化工厂化循环水养殖尾水处理效果,探究长茎葡萄蕨藻在工厂化循环水养殖条件下对含氮污染物的去除效果。采用模拟养殖尾水,考察了长茎葡萄蕨藻对氨氮、亚硝酸盐氮、硝酸盐氮的吸收效果,进而讨论了不同水力停留时间对长茎葡萄蕨藻吸收去除三氮的影响。结果表明,长茎葡萄蕨藻在单一含氮污染物中硝酸盐氮吸收速率最快;在混合含氮污染物中,氨氮吸收速率最快,吸收去除效率最高,其次为硝酸盐氮。长茎葡萄蕨藻在实验条件下养殖密度为16 g·L^(-1)时生长较快,氨氮、亚硝酸盐氮和硝酸盐氮的去除率为92.63%、61.91%和66.08%。在水流动状态下,水力停留时间越短,对三氮的综合去除效果较好,水力停留时间为4 h时氨氮、亚硝酸盐氮、硝酸盐氮去除率为55.79%、56.37%、58.50%。
In order to optimize the water treatment effect of recirculating aquaculture system,the nitrogen removal ability of Caulerpa lentillifera in simulated recirculating aquaculture system was studied.In artificial aquaculture waste water,the removal ability of ammonia nitrogen,nitrite nitrogen and nitrate nitrogen by C.lentillifera was investigated.And then,the effect of different hydraulic retention time on C.lentillifera nitrogen removal ability was examined.The results showed that C.lentillifera had fast absorption removal rate of nitrate nitrogen in waste water containing sole nitrogen pollutant,and had fast absorption removal rate of ammonia nitrogen in waste water containing three nitrogen pollutants,followed by nitrate nitrogen.Under experimental conditions,the culture density of C.lentillifera in 16 g·L^(-1) grew faster and the removal rate of ammonia,nitrite and nitrate nitrogen could reach to 92.63%,61.91%and 66.08%.In the flow condition,C.lentillifera showed a good nitrogen removal ability at short hydraulic retention time.At 4 h hydraulic retention time,the removal rate of ammonia,nitrite and nitrate nitrogen could reach to 55.79%,56.37%and 58.50%.
作者
李华
田道贺
刘青松
段亚飞
张家松
LI Hua;TIAN Daohe;LIU Qingsong;DUAN Yafei;ZHANG Jiasong(Key Lab of South China Sea Fishery Resources Exploitation&Utilization,Ministry of Agriculture,Guangdong Provincial Key Lab of Fishery Ecology Environment,South China Sea Fisheries Research Institute,Chinese Academy of Fishery Science,Guangzhou 510300,China)
出处
《生态科学》
CSCD
2021年第5期59-68,共10页
Ecological Science
基金
广东省基础与应用基础研究基金区域联合基金青年基金(2020A1515110834)
中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项资金资助(2021XK01,2021SD19)
广东省现代农业产业技术体系创新团队项目(2021KJ150)。
关键词
长茎葡萄蕨藻
工厂化循环水养殖
脱氮
水力停留时间
Caulerpa lentillifera
recirculating aquaculture systems
nitrogen removal
hydraulic retention time
