文章摘要
邓志强,李旭辉,阎百兴,张 燕,吕兑安.富营养化水体中芦苇和菖蒲浮床氮净化能力比较研究[J].农业环境科学学报,2013,32(11):2258-2263.
富营养化水体中芦苇和菖蒲浮床氮净化能力比较研究
A Comparative Study on Nitrogen Removal from Polluted Water by Floating Beds Planted with Phragmites australis and Acorus calamus
  
DOI:10.11654/jaes.2013.11.022
中文关键词: 富营养化    净化能力  芦苇  菖蒲
英文关键词: eutrophication  nitrogen  purification capacity  Phragmites australis  Acorus calamus
基金项目:
作者单位
邓志强 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室 长春 130102中国科学院大学 北京 100049 
李旭辉 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室 长春 130102 
阎百兴 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室 长春 130102 
张 燕 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室 长春 130102中国科学院大学 北京 100049 
吕兑安 中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室 长春 130102中国科学院大学 北京 100049 
摘要点击次数: 2377
全文下载次数: 2230
中文摘要:
      以小兴凯湖水为原水配制不同富营养化程度的污水,比较了芦苇和菖蒲浮床系统对TN的去除效果,分析了植物根系特征和植物吸收氮总量与氮去除效率和速率之间的关系,研究氮去除的主要途径和主要影响因素。结果表明,芦苇和菖蒲浮床对TN均有较强的净化能力,在TN浓度分别为9.63、4.58 mg·L-1的污水中,芦苇浮床对TN的平均去除率分别为91.5%和84.2%,菖蒲浮床的去除效率分别为89.9%和82.8%,植物吸收对氮去除的贡献率为36.4%~77.1%。两种污水中,芦苇浮床在生长末期前2 d对TN的平均去除速率分别为4.20、1.77 mg·L-1·d-1,显著高于菖蒲浮床的1.75、1.04 mg·L-1·d-1。两种植物的根系总长度、表面积和体积3个指标均与TN去除速率呈正相关关系(R≥0.826,P<0.01),根系发达程度是影响TN去除速率的主要因素。
英文摘要:
      Lab-scale experiments were carried out to compare the efficiency of nitrogen(N) removal by floating beds planted with common reed(Phragmites australis) and calamus(Acorus calamus) in eutrophic water man-made from water of Khanka Lake. The rhizome characteristics and the efficiency and rate of nitrogen removal by Phragmites australis and Acorus calamus were examined to study nitrogen removal mechanisms and major influencing factors. Results demonstrated that floating beds planted with Phragmites australis(3 replicas) and Acorus calamus(3 replicas) had water purifying ability. The average TN removal percentage was 91.5% and 84.2% for the reed beds and 89.9% and 82.8% for the calamus beds at 9.63 mg·L-1(feed A) and 4.58 mg·L-1(feed B) of TN concentrations in the feed water, respectively. Plant uptake contributed to 36.4%~77.1% of TN removal. The mean TN removal rate by the reed beds at late growth stage was 4.20 mg·L-1·d-1 and 1.77 mg·L-1·d-1, while that of the calamus beds was 1.75 mg·L-1·d-1 and 1.04 mg·L-1·d-1, respectively, for feed A and feed B. Significant correlations(R≥0.826 and P<0.01) were found between TN removal rates and total length, surface area and volume of plant roots. The plant roots is found to be the determinant factor of nitrogen removal efficiency in floating beds.
HTML    查看全文   查看/发表评论  下载PDF阅读器