摘要
目的探究小球藻与活性污泥混合形成藻菌共生体系的最优藻菌比例,使得对低碳氮比生活污水达到最好的处理效果。方法取6个1L三角烧瓶,放于恒温光照培养箱内培养,接种的初始生物质量浓度为0.45g/L,小球藻与活性污泥的接种质量比为6∶1,3∶1,1∶1,1∶3,1∶6,0∶1;设置温度为26℃;光暗比为12∶12;反应周期为3d。分析不同比例藻菌共生体系对低碳氮比生活污水中氨氮、COD和总磷的去除效果。结果藻菌共生反应体系对氨氮,COD,总磷的去除率普遍较好,均优于纯活性污泥反应器去除效果。其中藻菌质量比为3∶1的藻菌共生体系去除效率最高,对氨氮的去除率达到89.7%,对COD的去除率达到76.3%,对总磷的去除率达到90.5%。结论藻菌共生体系处理效果明显优于纯活性污泥反应器,活性污泥对COD和氨氮有很好的降解作用,小球藻对氮磷有高同化作用,同时活性污泥会促进小球藻对氮磷的吸收合成自身生物质,达到互利共生的状态,具有对低碳氮比生活污水很好的处理效果。
To achieve the best treatment effect for domestic sewage with low carbon nitrogen ratio,the optimal proportion of algal and bacterial in the algal-bacterial symbiosis system was explored.Six 1L triangular bottles with the initial biomass concentration was set to be 0.45 g/L,and the mass ratio of algal-bacterial 6∶1,3∶1,1∶1,1∶3,1∶6,0∶1 were set in a constant temperature light incubator.The temperature was set 26℃,the light to dark ratio 12∶12,and the reaction cycle 3 d.The results show that the treatment effects of the algal-bacterial symbiotic system on ammonia nitrogen,COD and TP are all significantly better than those of activated sludge reactor.When the mass ratio of algal-bacterial is 3∶1,the removal rates are highest,which reach 89.7%for ammonia nitrogen,76.3%for COD and 90.5%for TP,respectively.Activated sludge has a good degradation effect on COD and ammonia nitrogen,and chlorella has a high assimilation effect on nitrogen and phosphorus.At the same time,activated sludge can promote the absorption of nitrogen and phosphorus by chlorella to synthesize its own biomass.And activated sludge and chlorella form their state of mutually beneficial symbiosis,which shows good treatment effects on domestic sewage with low carbon nitrogen ratio.
作者
马兴冠
宁惠婕
刘金金
简文浩
MA Xingguan;NING Huijie;LIU Jinjin;JIAN Wenhao(School of Municiple and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2022年第3期565-569,共5页
Journal of Shenyang Jianzhu University：Natural Science
基金
“十三五”国家重点研发计划项目(2018YFD1100503)。
关键词
小球藻
藻菌比
藻菌共生体系
低碳氮比生活污水
chlorella
algal-bacterial proportion
algal-bacterial symbiosis system
low C/N ratio domestic sewage
