| 顾新跃,何 月,张秀青,王 青,裴国凤.底栖藻类-苦草对猪粪废水中营养物质的去除效果[J].农业环境科学学报,2014,33(8):1625-1630. |
| 底栖藻类-苦草对猪粪废水中营养物质的去除效果 |
| Nutrient Removal Rates from Swine Wastewater Using Periphyton-Vallisneria Natan |
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| DOI：10.11654/jaes.2014.08.022 |
| 中文关键词: 底栖藻类 苦草 营养物质 去除效果 逆境胁迫 |
| 英文关键词: periphyton Vallisneria natan nutrients removal efficiency adverse stress |
| 基金项目: |
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| 摘要点击次数: 2359 |
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| 中文摘要: |
| 为了探究底栖藻类和沉水植物（苦草）对猪粪废水的处理效果, 及苦草恢复重建的环境条件, 通过设置不同浓度的猪粪废水处理, 进行了为期32 d的室内模拟实验。结果表明：底栖藻类、苦草、底栖藻类-苦草处理组对高浓度猪粪废水的COD和氮、磷均存在显著的去除效果；COD的最大去除率均大于86%，底栖藻类-苦草混合培养对高、中浓度猪粪废水中磷、氮的平均去除率分别大于62%和70%, 高于二者单独培养的处理组（均小于59%和65%）。实验期间, 底栖藻类、苦草和浮游藻类Chla含量的变化以及苦草的CAT、 MDA含量变化表明, 高浓度的猪粪废水会对苦草产生短期的逆境胁迫, 但底栖藻类的存在可以减缓高浓度氮磷对苦草的胁迫效应, 在中浓度氮磷且有底栖藻类存在的条件下, 有利于苦草的恢复重建。 |
| 英文摘要: |
| Water plants are often used to remove nutrients from wastewater. This research was conducted to assess the efficiency of nutrient removal from swine wastewater using biological treatment system in a laboratory-scale experiment with periphyton and submerged macrophyte-Vallisneria natan during 32 days. The systems included high, medium and low concentrations of nutrients in wastewater. The maximum removal rates of chemical oxygen demand（COD） were more than 86% at high concentrations. The average phosphorus（P） and nitrogen（N） removal rates were respectively over 62% and 70% for both high and medium concentrations in mixed nutrient systems, greater than in single nutrient systems（59% and 65%）. Changes of physiological activities showed that V. natan suffered a short-term stress at high nutrient concentrations. However, such stresses could be alleviated by the presence of periphyton. In conclusion, the optimum condition for V. natan would be medium concentrations of nutrients with periphyton. |
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