摘要
为解决池塘高密度养殖存在的缺氧风险问题，设计了池塘溶氧调控系统。根据池塘夜间需氧模型，确定鲤科混养鱼类池塘溶氧安全浓度在3mg／L以上，增氧时间高于6．2h／（m2·W·d），增氧时滞为0．2—1．0h。池塘溶氧调控系统由水质在线监测系统、数据信息处理系统、电路控制系统和增氧设备组成，系统对水体溶氧的分辨率为±0．2％，可以有效调控池塘溶氧设备。试验运行发现，池塘溶氧调控系统比传统增氧方式约可节省运行时间33．4％，试验池塘的饲料系数降低了21．6％。系统具有良好的节能、增效效果。
In order to reduce the ponds culture oxygen lack risk, This paper introduce a dissolve oxygen （DO） control system design. By studies the nights pond aquaculture water DO variety, definite the carps polyculture water DO must above 3 mg/L,aeration times above 6.2 h/（m2 · W · d） ,The aeration times lag is 0.5 -1.0 h. The ponds culture dissolve oxygen control system compose by water quality measure system, datum disposal system,electro-circuit system and aeration machines. The system dissolve oxygen distinguish ratio is ± 0.2% it can availability control the aeration machines. Compare the traditional aeration manner the dissolve oxygen con- trol system could save about 33.4% operation time,and the experiment culture FCR was reduced 21.6%. The system can save culture energy used and increase ponds aquaculture effection.
出处
《渔业现代化》
2008年第5期18-20,33,共4页
Fishery Modernization
基金
国家"十一五"科技支撑计划项目(2006BAD03B0101)
中国水产科学研究院渔业水体净化技术与系统研究重点开放实验室基金(2006-01)
上海市科技兴农推广项目(2007-3-2)
关键词
池塘溶氧
实时监测
反馈调控
pond water dissolve oxygen
real-time monitoring
feedback control
