摘要
为了验证生态浮床对富营养化水体的修复能力,构建了两个容积各8.28m3的模拟水池,其中一池中放入面积为4m2的浮床,另一池为空白对照,两池中同样放入2.7m3的富营养化河水。比较两池在静态状况下和三种不同水力停留时间下对CODMn、TN和TP三个水质指标的去除效率。实验结果表明:浮床对CODMn、TN和TP均具有明显的去除效果,在静态期浮床池对CODMn、TN和TP的净去除率分别达到了16.9%、50.3%和50%。在动态实验中,随着水力停留时间的缩短,去除率有所降低,但当水力停留时间为最短的4.5d时,浮床对CODMn、TN、TP的净去除率仍达到了9.4%、39.8%和36.6%,达到了国家规定的地表水Ⅲ类水质要求。由此可知,水体富营养化现象通过生态浮床的净化明显能够得到改善。
In order to verify the capacity of ecological floating bed to remediate eutrophic water,two cement pools with volume of 8.28 m3 were built.4 m2 floating bed had been put into one pool,the other empty pool as a blank system.Then 2.7 m3 eutrophic water was added into the two pools.The removal rates of CODMn,TN,TP in a static condition and three different hydraulic retention times were studied.The experimental results showed that the removal effect of floating bed on CODMn,TN,TP is obvious.16.9% CODMn,50.3% TN and 50% TP were removed by ecological floating bed in static condition.With the hydraulic retention time shortened,the removal rate decreased,but when hydraulic retention time is 4.5 d,the net removal rate of CODMn,TN,TP was still achieved 9.4%,39.8% and 36.6%.The water quality achieved grade Ⅲ,the criteria is stipulated for ground water by our country.It showed that the Eutrophication phenomenon can be improved significantly through the ecological floating bed.
出处
《上海化工》
CAS
2010年第11期1-4,共4页
Shanghai Chemical Industry
关键词
生态浮床
富营养化水体
净去除率
Ecological floating bed
Eutrophic water
Net removal rate
