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Utilizing <i>spirogyra grevilleana</i>as a Phytoremediatory Agent for Reduction of Limnetic Nutrients and <i>Escherichia coli</i>Concentrations

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American Journal of Plant Sciences 2017年第5期8卷 1148-1158页

作者： Malcolm A. Barnard James W. Porter Susan B. Wilde Eugene P. Odum School of Ecology University of Georgia Athens GA USA Daniel B. Warnell School of Forestry and Natural Resources University of Georgia Athens GA USA

The freshwater alga spirogyra grevilleana was used in an experimental biofiltration system to reduce levels of Escherichia coli, nitrates, and phosphates. Water collected from a 2.32 ha lake in Atlanta, Georgia, USA was pumped at a constant rate (6.17 × 10-1 m3·hr-1) through the algal filtration devices with low and high concentrations of S. grevilleana. Effluent water was tested over time for E. coli, nitrate, phosphate, dissolved oxygen, and pH levels. Both concentrations of S. grevilleana reduced E. coli by 100% and significantly reduced nitrate concentrations (30% ± 13%) and phosphate concentrations (23% ± 5%) while maintaining dissolved oxygen and pH at normal levels. Utilizing S. grevilleana in an algal filtration device could potentially provide a sustainable, flexible, and low-cost method of E. coli reduction in freshwater lakes worldwide. Initial results indicate that the use of S. grevilleana in conjunction with an algal filtration device is potentially capable of creating potable water.

关键词： spirogyra grevilleana Bioremediation Phytoremediation Nutrients Escherichia coli

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利用水绵(spirogyra)深度处理生活污水强化除磷及其机制的探讨

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环境科学 2009年第4期30卷 1066-1072页

作者：雷国元马军哈尔滨工业大学城市水资源开发利用(北方)国家工程研究中心哈尔滨150090 哈尔滨工业大学城市水资源与水环境国家重点实验室哈尔滨150090 哈尔滨工业大学市政与环境工程学院哈尔滨150090

提出了用水绵进行城市污水深度处理的方法,强化去除水中氮、磷等污染物,以实际生活污水为对象,分析了水绵(spirogyra)的除污染性能.在自然光照条件下,spirogyra剂量(湿重)>3.05 g/L时,运行5 d后,TP浓度降到0.09 mg/L以下,去除率为96.84... 详细信息

提出了用水绵进行城市污水深度处理的方法,强化去除水中氮、磷等污染物,以实际生活污水为对象,分析了水绵(spirogyra)的除污染性能.在自然光照条件下,spirogyra剂量(湿重)>3.05 g/L时,运行5 d后,TP浓度降到0.09 mg/L以下,去除率为96.84%以上;NH4+-N浓度降到2.82 mg/L以下,去除率为88.60%以上;TN浓度降到4.31 mg/L以下,去除率在85.49%以上;高锰酸盐指数降到16.86 mg/L以下,去除率为24.56%以上.处理效率随spirogyra剂量提高而增加.在利用spirogyra深度处理污水的过程中,水的pH值逐渐升高,Ca2+、Mg2+浓度降低,电导率下降.spirogyra生长引起水体pH升高,诱导盐类矿物沉积,沉积矿物对磷的吸附是除磷的重要机制.spirogyra除磷符合Langmuir吸附等温线,本实验条件下spirogyra(湿重)对磷的饱和吸附量(以P计)为3.159 mg/***生长引起水的pH升高,使NH4+-N挥发可能是除氮的主要机制.选择适当的spirogyra用量和处理时间,处理后的出水氮、磷含量可达到湖泊类景观环境用水的水质标准.spirogyra良好的除氮、磷特性可能为污水深度处理提供新的技术途径.

关键词：深度处理污水 spirogyra 除磷除氮

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水绵(spirogyra)的除磷特性及其对微藻生长的抑制作用

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环境科学学报 2008年第3期28卷 476-483页

作者：马军雷国元哈尔滨工业大学市政环境工程学院哈尔滨工业大学市政环境工程学院哈尔滨150090

Phosphorus removal and the inhibition of micro-algal species growth in the presence of spirogyra were investigated,aiming at phosphorus removal and the inhibition of micro-algal species growth in eutrophicated water *** of micro-algal species by spirogyra was studied with Microcystis aeruginosa,a representative of blue algae,and Scenedesmus as a representative of green algal ***-cultivation experiments showed that spirogyra inhibited the growth of the two algal species and Chlorella species *** poor growth of Microcystis aeruginosa and Scenedesmus may result from the metabolic secretions of spirogyra or microorganisms accreted with spirogyra by a series tests,such as spirogyra co-cultivating with Microcystis aeruginosa and Scenedesmus,culture liquid and filtered culture liquid of spirogyra affacting growth of Microcystis aeruginosa and *** experiments were conducted on simulated lake water with a phosphorus concentration of less than 1.6 mg·L-1,and phosphorus was removed efficiently during the growth of *** composition of nitrogen nutrients affected the phosphorus removal efficiency,reaching a maximum when the ratio of NH+4-N to NO-3-N was 3∶*** changing ratio of inorganic nitrogen to phosphorus during spirogyra growth showed that phosphorus precipitation,which was induced by an increase of pH,was also an important mechanism for phosphorus removal in addition to assimilation by *** cultivation of spirogyra,which inhibits micro-algal species growth and removes phosphorus,provides a new method to bioremediate eutrophicated water bodies and to protect raw water resources.

关键词：富营养化生物修复 spirogyra 除磷抑藻

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DIVERSITY OF THE GENUS spirogyra（ZYGNEMOPHYCEAE SHAMEEL）IN THE NORTH-EASTERN AREAS OF PAKISTAN

DIVERSITY OF THE GENUS SPIROGYRA（ZYGNEMOPHYCEAE SHAMEEL）IN...

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2007 Congress of Pakistan Academy of Sciences

作者： A.Zarina Masud-ul-Hasan Mustafa Shameel Department of Botany Federal Urdu University of ArtsSciences & TechnologyGulshan-e-Iqbal CampusKarachi75300 Department of Botany Govt.College UniversityKachehri RoadLahore-54000 Department of Botany University of KarachiKarachi-75270Pakistan

Forty-two species of the genus Spirogyr a Link（Chlorophyta） were collected from various freshwater habitats in Gujranwala,Jhang,Kasur,Lahore,Sheikhupura and Sialkot and Attock Districts of the Punjab Province and Swat of *** as well as Chenari and Neelum Valley of Azad Kashmir during January 2004 and April *** were taxonomically investigated and have been described for the first time from their area of *** of these,22 species are being reported for the first time from any area of *** thrived luxuriantly during winter and spring seasons,started diminishing in summer and disappeared to a great extent in autumn.

关键词： Algae freshwater Chlorophyta spirogyra taxonomy cytology reproduction

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