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| 秋茄人工湿地净化循环海水养殖废水效果 | |
| 引用本文： | 高 锋,杨朝晖,李 晨,金卫红,张 力.秋茄人工湿地净化循环海水养殖废水效果[J].农业工程学报,2012,28(17):192-198. |
| 作者姓名： | 高 锋 杨朝晖 李 晨 金卫红 张 力 |
| 作者单位： | 1. 浙江海洋学院海洋科学学院,舟山316004;湖南大学环境科学与工程学院,长沙410082 2. 湖南大学环境科学与工程学院,长沙,410082 3. 浙江海洋学院海洋科学学院,舟山,316004 |
| 基金项目： | 国家自然科学基金资助项目（50908214） |
| 摘 要： | 为了深入研究采用人工湿地方法处理循环海水养殖废水的可行性及其运行特性,以红树林植物秋茄(Kandelia candel)为湿地植物构建耐盐人工湿地,对循环海水养殖废水进行生物处理。该文对比研究了秋茄人工湿地与无植物人工湿地的处理效果,在系统启动17d后的稳定运行阶段,秋茄人工湿地对化学需氧量(chemical oxygen demand,COD)和氨氮(NH4+-N)的去除率分别在66.4%～73.8%和64.3%～72.4%,明显高于无植物人工湿地对COD56.7%～62.4%的去除率和对NH4+-N51.2%～57.5%的去除率;在总磷(total phosphorus,TP)去除方面,秋茄人工湿地和无植物人工湿地的去除率分别为55.7%～61.7%和54.3%～60.4%,两者并无明显差别。对人工湿地基质酶活性的分析发现,秋茄人工湿地的基质脲酶活性和磷酸酶活性均明显高于无植物人工湿地;同时在秋茄人工湿地基质床中,根系分布最多的表层0～5cm区域基质酶活性明显高于其他区域,表明秋茄的根部对于提高人工湿地基质床的生物活性及其去污能力发挥了显著的作用。对秋茄人工湿地水力条件的研究表明,表面水力负荷对系统去除有机物和氮有较明显的影响,表面水力负荷控制在0.1m3/(m2·d)及以下时,出水水质可达到国家渔业水质标准的要求。该文研究结果为循环海水养殖废水提供了一种生物处理途径。 |
| 关 键 词： | 废水 净化 海水 人工湿地 红树林 水力负荷 |
| 收稿时间： | 2012/1/16 0:00:00 |
| 修稿时间： | 2012/7/10 0:00:00 |
Effect of saline aquaculture wastewater treatment by constructed mangrove wetland |
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| Gao Feng,Yang Zhaohui,Li Chen,Jin Weihong and Zhang Li.Effect of saline aquaculture wastewater treatment by constructed mangrove wetland[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(17):192-198. | |
| Authors: | Gao Feng Yang Zhaohui Li Chen Jin Weihong and Zhang Li |
| Institution: | 1(1.College of Marine Science,Zhejiang Ocean University,Zhoushan 316004,China;2.College of Environmental Science and Engineering,Hunan University,Changsha 410082,China) |
| Abstract: | To explore the feasibility and operating characteristics of the treatment of saline aquaculture wastewater by constructed wetland, mangrove plants Kandelia candel were used to construct salt-tolerant wetland to treat saline aquaculture wastewater. Three unplanted units were also set as a control. The planted units showed better capability of COD and NH4+-N removal than unplanted units obviously. Treatment performances of the planted units were found to be 66.4%-73.8% for COD and 64.3%-72.4% for NH4+-N. For the unplanted units, the reduction in COD and NH4+-N was in the range of 56.7%-62.4%, 51.2%-57.5%, respectively. However, for the removal of TP, there was no significant different between the planted units and unplanted units. The TP removal efficiency varied between 55.7%-61.7% for the planted units and between 54.3%-60.4% for the unplanted units. The enzyme activity of urease and phosphatase in the substrate of planted units was obviously higher than that of unplanted units. And the region with the highest enzyme activity was in 0-5 cm surface area in the substrate, where roots system distributed most broadly. So the roots of mangrove could be considered to have a significant role for the biological activity and contaminants removal of the constructed wetland. The effect of HLR on the treatment performance of the constructed mangrove wetland was studied, and the result indicated that the removal of organic matter and nitrogen of the wetland was obviously influenced by the HLR of the system. The effluents discharge from the constructed mangrove wetland could meet the water quality standards of the National Fisheries when the HLR of the wetland below 0.1 m3/ (m2·d). The findings of this article can provide a way for the biological treatment of saline aquaculture wastewater. |
| Keywords: | wastewater purification seawater constructed wetland mangrove hydraulic loading rate |
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