CAJ | 학술논문

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.
선취중경지구분포면적교엄적봉래진조(S1)、사계묘조(S2)、비선관조(S3)화수저조(S4)저4충불동자색모암,장기멸균후가도미멸균적취자서남대학숭덕호적경관수체중,진행생태항구건,연구불동자색모암이화성질대수체중담린급유궤물거제적영향.결과표명,실험조건하,S1조대수체총담、총린급안담거제효과최호,거제솔분별위45.1％、62.3％、90.0％； S4조대수체중 COD 거제효과최호,거제솔위94.5％；실험전후자색모암중안담함량변화균불명현,설명자색모암적흡부작용불시도치수체중안담하강적주요인소；신대류산염환원균유억제작용,동、미대혁란씨음성균유촉진작용,수체중미생물다양성여총담함량정상관；미생물군락결구여배경인자적 PCA 분석득출모암통과석방광질원소영향수체중미생물군락결구급조성,종이영향수체담린급유궤물거제.
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.