无机废水中藻菌颗粒污泥的培养及脱氮性能  

Cultivation and denitrification performance of algal-bacterial granular sludge in inorganic wastewater

作　　者：罗怡 李正昊 程媛媛[1] 康建林 刘立良 龙焙[1] LUO Yi;LI Zhenghao;CHENG Yuanyuan;KANG Jianlin;LIU Liliang;LONG Bei(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Ganzhou Kejing Environmental Protection Engineering Technology Co.,Ltd.,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000 [2]赣州科净环保工程技术有限公司,江西赣州341000

出　　处：《精细化工》2024年第12期2727-2736,共10页Fine Chemicals

基　　金：国家自然科学基金项目(52060007);江西理工大学清江青年英才支持计划项目(JXUSTQJYX2020008);江西省大学生创新训练计划项目(S202310407060、S202210407024)。

摘　　要：以好氧颗粒污泥(AGS)为载体,启动光序批式反应器,运行过程中投加外源藻液(小球藻)及絮凝剂(阳离子聚丙烯酰胺)培养藻菌颗粒污泥(ABGS),用于无机高氨氮废水处理,探究无机械曝气条件下ABGS的脱氮效果。结果表明,运行过程中颗粒数量和粒径均不断减小,藻类逐渐富集,在第42 d成功构建藻菌共生体系,在第129 d培养出成熟ABGS。第145 d时ABGS的平均粒径和污泥质量浓度分别为0.46 mm和1750 mg/L,污泥容积指数为51.43 mL/g,污泥叶绿素a质量浓度为17.48 mg/L,优势菌属为Blastopirellula(16.70%,相对丰度,下同)、SM1A02(12.91%)、Nitrosomonas(7.78%)等,优势藻属为Chlorella(88.06%)。在1~67和105~131 d内氨氮和总无机氮(TIN)去除率波动较大,在68~104 d和132~145 d氨氮和TIN去除率分别接近100%和60%。藻类产氧速率整体呈减小趋势,第100d开始保持在15mg(O_(2))/(L·h)左右。藻类同化去除的TIN在15%~100%之间。Algal bacterial granular sludge(ABGS) was cultivated by adding exogenous algae liquid(Chlorella) and flocculant(cationic polyacrylamide) into a light sequencing batch reactor using aerobic granular sludge(AGS) as carrier,and applied for inorganic high ammonia nitrogen wastewater treatment.The denitrification performance of ABGS with no mechanical aeration was further analyzed.The results showed that,with the particle number and size continuously decreasing and the algae gradually enriching,the algae-bacteria symbiosis system was successfully constructed on the 42nd day,and mature ABGS was obtained on the 129th day.On day 145,the ABGS exhibited an average particle size and sludge concentration of 0.46 mm and 1750 mg/L,respectively,the sludge volume index of 51.43 m L/g,and the sludge chlorophyll a mass concentration of 17.48 mg/L,with the dominant bacterial genera being Blastopirellula(16.70%,relative abundance,the same below),SM1A02(12.91%),Nitrosomonas(7.78%),etc,and the dominant algae Chlorella(88.06%).The removal rates of ammonia nitrogen and total inorganic nitrogen(TIN) fluctuated greatly from the first day to 67th day and 105th to 131th day,and were close to 100% and 60% from 68th to 104th day and 132th to 145th day,respectively.The oxygen production rate of algae showed an overall decreasing trend,and remained at approximately 15 mg(O_(2))/(L·h) at the 100th day.The TIN removed by algal assimilation was between 15% and 100%.

关 键 词：藻菌颗粒污泥 无机废水 培养 脱氮 稳定性 水处理技术 

分 类 号：X703[环境科学与工程—环境工程]