摘要
为研究浮床技术组合工艺对人工废水中氮素的净化效果,在室外条件下,以自行设计组装的浮床作为载体,对由湖水和自来水1∶1(体积比)混合并添加一定量营养元素配制的人工废水进行为期54 d的处理,且对其进行曝气、投加活性污泥、增设人工水草等辅助工艺的组合搭配,分析不同工艺条件下人工废水中氮素的降解效果。结果表明:曝气+污泥+人工水草组合工艺条件下的人工废水在试验进行至第6 d NH_4^+—N降解率为89.9%,39 d时NH_4^+—N质量浓度为0.71 mg/L,降解率为97.4%,水质达到地表水Ⅱ类标准;试验结束时,曝气的水箱内NH_4^+—N降解率均达97.6%,曝气对人工废水中氮素的去除具有良好的促进作用,可与浮床技术结合用于湖泊、池塘等水体治理。
In order to study the purification effect of nitrogen in artificial wastewater treated by combined process of floating bed,under the outdoor condition,by using a self-designed and assembled floating bed as a carrier,the artificial wastewater prepared from mixing lake water with tap water in a volume ratio of 1∶1 and added with a certain amount of nutrient elements of different combinations was treated for 54 d,and auxiliary process combined with aeration,adding sludge and artificial grass were employed,the effect of degradation of nitrogen in artificial wastewater under different process conditions was analyzed.The results show that the removal rate of NH4+-N in the artificial wastewater under the combined process conditions of aeration,sludge and artificial grass was 89.9%on the 6th day,the mass concentration ofNH4+-Nis 0.71 mg/L on the 39th day,the removal rate is 97.4%,and the water quality reaches ClassⅡstandard of surface water.At the end of the experiment,the removal rate of NH4+-N reaches 97.6%in the tanks with aeration.Aeration has a good effect on promoting nitrogen removal in artificial wastewater and combination of it with floating bed process can be used to treat water bodies such as lakes and ponds.
作者
张择瑞
田创
方超
汪家权
ZHANG Zerui;TIAN Chuang;FANG Chao;WANG Jiaquan(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《安徽工业大学学报（自然科学版）》
CAS
2018年第1期79-84,共6页
Journal of Anhui University of Technology（Natural Science）
基金
国家水体污染控制与治理重大科技专项(2012ZX07103-004)
关键词
组合工艺
曝气
活性污泥
人工水草
人工废水
氮素
combined process
aeration
activated sludge
artificial grass
artificial wastewater
nitrogen
