摘要
2010年7—12月，通过水培盆栽试验研究了桐花（Aegicerascorniculatum）、海莲（Bruguierasexangula）和无瓣海桑（Sonneratiacaseolaris）对生活污水的净化效果，设置3个浓度梯度，即A组（TN为3．96mg／L，TP为0．47ms／L），B组（TN为19．8mg／L，TP为2．35mg／L）和C组（TN为39．6mg／L，TP为4．7m#L）。结果表明，随着水培时间的增加，水体盐度、总氮和总磷含量显著下降（P〈0．001）。桐花、海莲和无瓣海桑对生活污水总氮去除率达74．5％-97．4％，总磷去除率达72．3％～95．7％。栽培红树植物的系统对氮和磷的去除率显著高于无植物系统，分别为无植物的1．28—3．20倍和1．24～2．71倍。红树植物氮和磷的质量分数分别为（6．81±0．85）mg／g和（1．41±0．46）mg／g。当污水浓度低时（A组），红树植物主要是通过累积作用去除水体氮和磷，占总去除效应的42．2％-63．3％和46．1％-85．8％；当污水浓度高时（C组），红树植物氮和磷的累积量仅占4．5％～10．4％和6．7％-14．9％。
In order to research the purifying effects of domestic sewage, which caused by Aegiceras corniculatum, Bruguiera sexangula, and Sonneratia caseolaris, a water cultivation and pot experiment was carried out from July to December in 2010. In this experiment, three concentration groups were set. The A group represented the content of total nitrogen （TN） for 3.96 mg/L and total phosphorus （TP） for 0.47 mg/L. The B group represented the con- tent of TN for 19.8 mg,/L and TP for 2.35 mg/L. The C group implied the content of TN for 39.6 mg/L and TP for 4.7 mg/L. The results showed that the salinity, TN and TP in water rapidly declined with an increase of cultivation time （P 〈 0. 001 ）. The removal effieiencies of TN and TP, which were caused by A. corniculatum, B. sexattgula and S. caseolaris, ranged from 74.5% to 97.4% and from 72.3% to 95.7% , respectively. The removal rates of TN and TP in the mangrove plants cultivation system were 128% -320% times and 124% -271% times as high as those in non - plant system. The average of mass fraction of nitrogen and phosphorus in mangrove plants were （6.81 ±0.85 ） mg/g and （ 1.41 ±0.46） mg/g, respectively. In A group, which had a low sewage concentration, the ac- cumulation action played an important role for removing nitrogen and phosphorus, and the removal rate ranged from 42.2% to 63.3% and from 46.1% to 85.8% , respectively. However, the TN and TP removal by plant absorption were rather small under the C group, which had a high sewage concentration, and the removal rate accounted for 4.5% - 10.4% and 6.7% - 14.9%, respectively.
出处
《水生态学杂志》
北大核心
2013年第5期47-53,共7页
Journal of Hydroecology
基金
深圳市水务局政府采购项目(SZZDZB-2009-A149F)
关键词
红树植物
氮
磷
去除效应
mangrove plants
nitrogen
phosphorus
removal efficiency
