| 不同紫色母岩对景观水体氮磷及有机物去除的影响 |
| 摘要点击 1979 全文点击 1261 投稿时间：2014-11-12 修订日期：2015-01-04 |
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| 中文关键词 紫色母岩 景观水体 氮磷去除 有机物去除 微生物群落 |
| 英文关键词 purple parent rock landscape water removal rates of total nitrogen and phosphorus removal rates of organics microbial community |
| 作者 | 单位 | E-mail | | 黄雪娇 | 西南大学资源环境学院, 土壤多尺度界面过程与调控重点实验室, 重庆 400715 | 1548217611@qq.com | | 刘晓晨 | 西南大学资源环境学院, 土壤多尺度界面过程与调控重点实验室, 重庆 400715 | | | 李振轮 | 西南大学资源环境学院, 土壤多尺度界面过程与调控重点实验室, 重庆 400715 | lizhlun4740@sina.com | | 石纹豪 | 西南大学资源环境学院, 土壤多尺度界面过程与调控重点实验室, 重庆 400715 | | | 杨珊 | 西南大学资源环境学院, 土壤多尺度界面过程与调控重点实验室, 重庆 400715 | |
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| 中文摘要 |
| 选取重庆地区分布面积较广的蓬莱镇组(S1)、沙溪庙组(S2)、飞仙关组(S3)和遂宁组(S4)这4种不同紫色母岩,将其灭菌后加到未灭菌的取自西南大学崇德湖的景观水体中,进行生态缸构建,研究不同紫色母岩理化性质对水体中氮磷及有机物去除 的影响. 结果表明,实验条件下,S1组对水体总氮、总磷及氨氮去除效果最好,去除率分别为45.1%、62.3%、90.0%; S4组对水体中COD去除效果最好,去除率为94.5%; 实验前后紫色母岩中氨氮含量变化均不明显,说明紫色母岩的吸附作用不是导致水体中氨氮下降的主要因素; 砷对硫酸盐还原菌有抑制作用,铜、镁对革兰氏阴性菌有促进作用,水体中微生物多样性与总氮含量正相关; 微生物群落结构与环境因子的PCA分析得出母岩通过释放 矿质元素影响水体中微生物群落结构及组成,从而影响水体氮磷及有机物去除. |
| 英文摘要 |
| In order to understand the impacts of physicochemical properties of purple parent rock on the removal rates of nitrogen, phosphorus and organics in landscape water systems, four types of purple parent rocks including Peng-lai-zhen Formation (S1), Sha-xi-miao Formation (S2), Fei-xian-guan Formation(S3) and Sui-ning Formation (S4), which distribute widely in Chongqing, were selected and autoclaved, and added to unsterile landscape water collected from Chong-de Lake in Southwest University, and the landscape water only was used as control. And several indicators such as total nitrogen and phosphorus and so on of every disposal were investigated periodically. The results indicated that: 1 The highest removal rates of total nitrogen, total phosphorus and Ammonia nitrogen were observed in S1, which were 45.1%, 62.3% and 90%, respectively; the highest removal rate of COD was 94.5% in S4; the ammonia nitrogen content in the purple parent rocks was not obviously changed before and after the experiments, which indicated that the adsorption of ammonia nitrogen on purple parent rock surface was not the main reason for the decrease of ammonia nitrogen in water. 2 Arsenate had inhibitory effect on the sulfate-reducing bacteria, while copper and magnesium had promoting effect on gram-negative bacteria. 3 The microbial diversity was positively correlated to total nitrogen in water. 4 Based on the PCA analyses of microbial community structure and environmental factors, the mineral elements released from parent rock affected the structure and composition of microbial community in the test water, and then influenced the removal rates of nitrogen, phosphorus and organics in water systems. |
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