循环水养鱼系统中氨氮产生量估算模型的研究  

Study on estimation model of fish ammonia produce in recirculating aquaculture system

作　　者：刘晃[1] 顾川川[1] 

机构地区：[1]农业部渔业装备与工程技术重点实验室,中国水产科学研究院渔业机械仪器研究所,上海200092

出　　处：《渔业现代化》2012年第5期7-10,15,共5页Fishery Modernization

基　　金：国家科技支撑计划课题"节能环保型循环水养殖工程装备与关键技术研究"(2011BAD13B04);科研院所技术开发研究专项项目"节能型高密度循环水养殖系统关键技术研究和示范"(2010EG134287)

摘　　要：循环水养鱼作为一种未来水产养殖的发展方向,其系统设计越来越受到关注,其中系统设计关键问题之一是快速去除水中的氨氮,因此准确得到氨氮产生量是系统设计中一个关键步骤。该研究基于物质平衡原理,同时假设每次投喂到鱼池中的饲料能及时地被养殖鱼摄食,并且养殖鱼排泄的粪便能在未被分解就快速排出系统,得到氨氮产生量的估算模型。该模型中氨氮产生量与循环水养殖系统的投喂量、饲料中蛋白质的含量和氮污染物的转化率成正比。在实际应用中该模型能较准确地估算出循环水养殖系统中的氨氮产生量,而且在考虑安全系数时,得到的估算值相比实际值大,符合工程设计中的系统安全需要。Recirculating aquaculture is one of the development trends of the future aquaculture. And the sys- tem designs are being paid more and more attention. The key of system design is rapid removal of total ammo- nia-nitrogen. Therefore, the estimation model of fish total ammonia-nitrogen produce is important extremely to system design. Based on the material balance principle, the model to estimate the amount of total ammonia-ni- trogen produced was established, assuming that feed have been eaten timely and faces have been removed from system before breaking. In this model, total ammonia-nitrogen produced increased with feeding rate, protein percentage of feed and nitrogen conversion rate. In practical application, the calculated values agree basically with those of actual operation. In consider with the safety factor, the results estimated were greater than actual values, which was accord with the system safety design needs.

关 键 词：循环水养鱼 系统设计 氨氮 估算模型 

分 类 号：S959[农业科学—水产养殖]