碳源对海水水族箱脱氮系统运行效果的影响  

Effect of carbon sources on nitrogen removal in marine aquarium

作　　者：郭建伟[1] 宋志文[1] 吴伟[1] 高杨[1] 刘璇[1] 

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《河北渔业》2010年第12期1-4,共4页

基　　金：水利部公益性行业科研专项(200901063);青岛市科技计划项目(07-2-3-13-jch)

摘　　要：研究不同碳源对海水水族箱脱氮系统运行效果的影响,从而为系统高效运行提供依据。结果表明,当初始硝酸盐浓度为100 mg/L时,分别以乙醇、乙酸钠、柠檬酸钠和葡萄糖作为唯一碳源,海水水族箱中硝酸盐去除效果达到99%所需时间分别为8 d9、d1、0 d和11 d。以葡萄糖和柠檬酸钠为唯一碳源时,水族箱中亚硝酸盐呈现出先积累再消耗的变化规律,亚硝酸盐峰值浓度分别为16.7 mg/L和17.6 mg/L,并分别在13d和11 d降解到0.1 mg/L以下;而分别以乙醇和乙酸钠作为唯一碳源时,水族箱中亚硝酸盐氮浓度均维持在0.1 mg/L以下。以乙醇作为唯一碳源时,水族箱中DO迅速下降,8 d时稳定在2 mg/L左右,分别投加其他3种碳源时,水族箱中DO始终维持在6 mg/L以上。除柠檬酸钠外,投加碳源后水族箱中浊度和pH未出现明显变化。In this paper,effect of four kinds of carbon sources on nitrogen removal system of marine aquarium was investigated.The results showed that when the initial concentration of nitrogen is 100 mg/L and ethanol,acetate sodium,citrate and glucose was used as the sole carbon source respectively,the 99% removal of nitrogen was achieved within the periond of 8,9,10 and 11days respectively..When the ethanol and sodium acetate were used as the sole carbon source respectively,the concentration of nitrite nitrogen maintained consistently below 0.1 mg/L.However,the phenomenon of nitrite accumulation was observed and peak concentration were 16.7 mg/L and 17.6 mg/L respectively when glucose and sodium citrate were used as the sole carbon source.When ethanol was used as the sole carbon source DO decreased rapidly to about 2 mg/L in the eighth day,but maintained at 6 mg/L or more when the other three carbon sources were used as the sole carbon source respectively.The pH and turbidity of the marine aquarium were not influenced significantly by the carbon sources except for sodium citrate,

关 键 词：碳源 海水水族箱 脱氮系统 硝酸盐 

分 类 号：X55[环境科学与工程—环境工程]