摘要
[目的]研究不同基质下的苦草去污能力。[方法]开展不同基质下的苦草净水模拟试验,设5个处理:T 1(对照组):底泥+水+苦草(Vallisneria natans),T 2:底泥+2层无纺布+沙+水+苦草;T 3:底泥+2层无纺布+玉米芯+沙+水+苦草;T 4:底泥+2层无纺布+生物质焦+沙+水+苦草;T 5:底泥+2层无纺布+玉米芯+生物质焦+沙+水+苦草。[结果]苦草的5项生理指标显示,基质中添加有机物会促进植物的生长,T 3和T 5试验组中苦草的生长状态最好。4组试验组与对照组相比对水体的净化效果均高于对照组,且T 4试验组的净水效果最好。在最后一次的净化速率对比中,T 5试验组的去除速率最快,净水效果最好。[结论]基质净水在试验初期效果比较好,但根本上对水体的净化还需要依靠沉水植物。
[Objective]To study the decontamination ability of Vallisneria natants under different matrix.[Method]Simulation experiments of V.natans water purification under different substrates were carried out:T 1(control group):sediment+water+V.natans,T 2:sediment+two layers of non-woven fabric+sand+water+V.natans,T 3:sediment+two layers of non-woven fabric+corncob+sand+water+V.natans,T 4:sediment+two layers of non-woven fabric+activated carbon+sand+water+V.natans,T 5:sediment+two layers of non-woven fabric+corncob+activated carbon+sand+water+V.natans.[Result]According to the five physiological indexes of adding organic substances into the matrix could promote the growth of plants,and the growth state of V.natans was the best in T 3 and T 5 test groups.Compared with the control group,the water purification effect of the four groups of tests was higher than that of the control group,and the T 4 test group had the best water purification effect.In the last purification rate comparison,T 5 had the fastest removal rate and the best purification effect.[Conclusion]The effect of matrix water purification is better at the beginning of the experiment,but the purification of water body basically depends on submerged plants.
作者
史红玉
贾宇航
向珞宁
罗先强
冼耀强
周胜
SHI Hong-yu;JIA Yu-hang;XIANG Luo-ning(Zhongkai University of Agricultural Engineering,Guangzhou,Guangdong 510225;Guangdong Runyu Natural Resources Technology Co.,Ltd.,Guangzhou,Guangdong 511400)
出处
《安徽农业科学》
CAS
2020年第14期62-65,68,共5页
Journal of Anhui Agricultural Sciences
基金
广东省省级科技计划项目(2016A020207003)
广东省普通高校工程技术研究中心项目(2016GCZX001)
广东省农业技术需求研究与示范项目(2017LM4170)
广州市科技计划项目(2014Y2-00526)
现代高质增效农业规划与技术服务项目(KA1810302)
广州市越秀区科技创新和产业化专项(2016-GX-004)
校企合作技术开发合作项目(D11820254)。
关键词
基质
苦草
底泥
净水
Substrate
Vallisneria natans
Bottom mod
Water purification