摘要
测定了6个各水培10棵梭鱼草的净化槽(曝气、非曝气)的植物生理特性及对应的净化槽水质,研究了曝气对梭鱼草的生理特性及净化效果的影响,另设空白槽对照(CK)。结果表明,曝气下植物根、茎、叶的长度较短,叶片Chla、Chlb、可溶性蛋白(SP)含量分别较非曝气下叶片低0.187 7 mg/g、0.084 7 mg/g、17.36 mg/g,而根组织过氧化物酶(POD)、过氧化氢酶CAT活性分别较非曝气下植物根高0.014 6 U/(g.min)、0.309 5 mg/(g.min);曝气下植株的氮、磷含量及生物量分别比非曝气下植株低0.87 g/kg、0.35 g/kg与2.13 g/棵;曝气槽植物的分蘖数、根密度较高;曝气槽COD、NH4+-N去除率较非曝气槽高12.73%、8.31%,而溶P去除率较非曝气槽低24.86%。
Pontederia cordata was hydroponic cultivated in 6 purifying-tanks（with and without aeration） with same planting density of 10,to investigate physiological traits of the plants and the main physical and chemical traits of the effluents.Effects of aeration on physiological traits of the plants and purifying efficiencies of the purifying-tanks during treatment for heavily polluted water were comparatively analyzed,another tank without plant for control（CK）.Results showed aeration affected physiological traits of the plants.Roots,stems and leaves lengths of the plants at aeration were shorter than the non aeration.Chla,Chlb and SP contents of leaves were lower than the non aeration by decreasing 0.187 7 mg/g,0.084 7 mg/g and 17.36 mg/g.While POD and CAT activities of roots tissues at aeration exceeded the non aeration by 0.014 6 U/（g·min） and 0.309 5 mg/（g·min）.N and P accumulation and biomass of the plants were higher at non aeration than the aeration by increasing 0.87 g/kg,0.35 g/kg and 2.13 g/plant.Tillers and roots densities at aeration were more than the non aeration.COD and NH＋4-N removals of the effluents at aeration exceeded the non aeration by 12.73% and 8.31%,while soluble P removals were lower by declining 24.86%.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第12期84-87,共4页
Journal of Wuhan University of Technology
基金
国家科技重大专项(2008ZX07317-006)
上海市科委重点项目(062312019)
关键词
曝气
梭鱼草
生理特性
净化效果
aeration
Pontederia cordata
physiological characteristic
purifying efficiency
