曝气方式对序批式反应器培养生物絮凝体的活性与营养组分的影响  

Effects of aeration on the activity and nutritional component of bio-flocs in sequencing batch reactor

作　　者：李莉[1,2] 谭洪新[1,2] 张楠[1,2] 成小婷 陈家捷 檀晨曦 

机构地区：[1]上海海洋大学水产与生命学院/上海水产养殖工程技术研究中心 [2]上海高校知识服务平台上海海洋大学水产动物遗传育种中心,上海201306

出　　处：《广东农业科学》2014年第12期95-99,共5页Guangdong Agricultural Sciences

基　　金："十二五"农村领域国家科技计划项目(2012BAD25B03)

摘　　要：以水产养殖固体废弃物为原料,利用序批式反应器培养生物絮凝体,研究连续曝气和间歇曝气方式对序批式反应器培养生物絮凝体的活性与营养组分的影响。结果表明,间歇曝气方式可抑制序批式反应器中的硝化作用,试验期间亚硝酸盐和硝酸盐平均浓度分别为0.93(±0.26)、0.90(±0.21)mg/L;而连续曝气反应器中,亚硝酸盐和硝酸盐积累较高,试验结束时反应器内亚硝酸盐和硝酸盐浓度分别达到8.68、20.78 mg/L。间歇曝气序批式反应器培养的生物絮凝体中有机氮占总氮比率逐渐上升,平均值为81.85(±1.27)%;连续曝气反应器中有机氮占总氮比率逐渐下降,平均值为61.11(±4.30)%。间歇曝气反应器中生物絮凝体最大蛋白含量为34.38(±0.15)%,连续曝气反应器中最大蛋白含量为28.59(±3.50)%,间歇曝气反应器培养的生物絮凝体的平均粗蛋白含量比连续曝气反应器中高5.85(±0.26)%。Aquacuhural solid waste was used to culture bio-flocs in sequencing batch reactor. Continuous aeration and intermittent aeration modes were set up to study effects of aeration on the activity and nutritional components of bio-flocs in sequencing batch reactor. Results showed that intermittent aeration tended to inhibit the nitrification process with average nitrite concentration of 0.93（±0.26） mg/L and nitrate concentration of 0.90（±0.21） mg/L throughout the experimental period. In continuous aeration treatment, high accumulation of nitrite and nitrate was observed across the trial, the concentrations of nitrite and nitrate were 8.68 mg/L and 20.78 mg/L, respectively, at the end of experiment. The percentage of organic nitrogen to total nitrogen （TON/TN） of bio-flocs increased gradually in intermittent aeration sequencing batch reactor with an average of 81.85（±1.27）%, while a decreasing treand was observed in the continuous aeration group with an average of 61.11（±4.30）%. In intermittent aeration treatment, the maximum concentration of protein content was 34.38 （±0.15）% and in continuous aeration sequencing batch reactor, was 28.59 （±3.50）%. Average protein content of bio-floes was 5.85 （±0.26）% higher in the intermittent aeration group than that in continuous aeration group.

关 键 词：间歇曝气 连续曝气 序批式反应器 生物絮凝体 水产养殖 固体废弃物 

分 类 号：S966.9[农业科学—水产养殖]