基于活鱼运输的二氧化碳去除装置应用试验研究

摘要

为降低高密度活鱼运输水体中CO2的积累对活鱼品质和运输存活率的影响，依据车载活鱼运输工况条件，设计了配置有CO2去除装置的活鱼运输装备系统，以鳙鱼为对象进行车下48 h静态试验，检测分析水体中的CO2浓度及pH随时间的变化规律，且与没有配置CO2去除装置的活鱼运输简易装备进行对比研究。结果表明：活鱼运输简易装备，7月测试组（运载量160 kg）经过6 h运输过程，CO2浓度持续上升最高达169 mg/L，pH持续下降最低达5．3；活鱼运输装备系统，8月试验组（2000 kg），历时48 h，渔箱水体CO2浓度在上升到峰值90 mg/L后逐渐下降，20 h后趋于安全值（50 mg/L），pH与CO2浓度呈现负相关的趋势关系，pH在短时间快速下降后逐渐回升终至6．9以上。 CO2去除装置可以有效抑制活鱼运输水体中的CO2积累，能够在较短时间内降低其浓度并到达安全值之下，能够有效提高远距离和长时间车载运输活鱼的品质和存活率。%In order to reduce the adverse impact of high concentration carbon dioxide to fish quality and survival rate in the high density live fish transportation , we designed a CO 2 removal device and build a fish transportation test equipment system which based on the operating conditions of vehicle live fish transportation , the static test was carried out to detect the changes of carbon dioxide concentration and pH value , which compared to a transportation simple equipment of live fish , the results show that:the carbon dioxide concentration ( July text ) of transportation simple equipment of live fish was rising continuously during transportation(up to 169 mg/L), and pH value was decreased gradually (low to 5.3); carbon dioxide concentration of the transportation equipment system of live fish increased firstly in a hort -term(up to 90 mg/L) , then decreased gradually and tends to be stable ( 50 mg/L ) , pH value rose gradually after a short reducing until reach about 6.9 that nearly to neutral .CO2 removal device can effectively restrain the concentration of carbon dioxide in the transport water of living fish , raise pH value and maintain acid-base balance of transport water , that is helpful for live fish quality and survival rate of long distance and longtime vehicle transportation , so as to increase the economic benefit .