摘要
为研究水生生物与多孔混凝土复合生态系统对水体中TN、TP的去除和吸收效果,选取适宜辽宁地区生长的本土水生植物香蒲、菖蒲、睡莲和金鱼藻为试验对象,水生动物螺蛳为试验材料,将4种水生植物进行单一植物组配、2种水生植物组配、3种及4种水生植物组配,分别植入多孔混凝土中,分析不同试验组合对人工污水中TN、TP的去除效果以及4种水生植物不同部位对TN、TP的吸收效果。试验结果表明:在所有试验组合中,3种植物组合中的香蒲+菖蒲+金鱼藻与多孔混凝土组合后对污水中TN净化效果最好,去除率为93.75%,香蒲+菖蒲+睡莲+金鱼藻的组合对水体中TP的净化效果最好,去除率为90.57%。4种水生植物对TN的吸收作用以茎叶部为主,香蒲茎叶部和根系部TN含量增长率均为最大,分别为48.92%和43.27%;TP的吸收作用主要以根系部为主,菖蒲的茎叶部和根系部TP含量增长率最大,分别为21.08%和25.51%。4种水生植物通过搭配组合,优势互补,相比单一水生植物种类能够产生更好的水质净化效果。根据受污染水体的主要污染源,可以针对性选择适宜的水生植物种类及其组合,以达到最佳的净化效果。4种水生植物不同部位对氮磷元素的吸收作用不同,可为实际生产中氮磷元素的有效回收利用提供一定的参考依据。
In order to study the removal and absorption of TN and TP by complex ecosystem of aquatic organism and porous concrete,the native aquatic plants:Typha orientalis Presl,Acorus calamus L,Nymphaea tetragona and Ceratophyllum demersum L,which are suitable for growing in Liaoning Province were selected as experimental objects,the aquatic animal snail was used as the experimental material.The single aquatic plant and combinations of two,three and four aquatic plant were planted into the porous concrete.The effects of different test combinations on removal of TN and TP in artificial sewage and the effects of different parts of four aquatic plants on absorption of TN and TP were analyzed.The test results showed that among all the experimental combinations,the combination of Typha orientalis Presl+Acorus calamus L+Ceratophyllum demersum L and porous concrete had the best purification effect on TN in sewage,and the removal rate was 93.75%;the combination of Typha orientalis Presl+Acorus calamus L+Nymphaea tetragona+Ceratophyllum demersum L and porous concrete had the best purification effect on TP in water,and the removal rate was 90.57%.The absorption of TN was mainly by the stem and leaf of the four aquatic plants,and the concentration of TN in the stem and leaf and root of Typha orientalis Presl increases most,which was 48.92%and 43.27%respectively;the absorption of TP was mainly by the root.The concentrationof TP in the stem,leaf and root of Acorus calamus L increases most,which was 21.08%and 25.51%respectively.The combinations of the four varieties of aquatic plants have complementary advantages and can produce better water purification effect,compared with single variety of aquatic plant.According to the main pollution sources of polluted water,appropriate aquatic plant species and their combinations can be selected to achieve the best purification effect.Different parts of the four aquatic plants have different absorption effects on nitrogen and phosphorus,which can provide reference basis for the effective recovery and utilization of nitrogen and phosphorus in practical production.
作者
闫滨
苗迎雪
高真伟
刘燃
YAN Bin;MIAO Ying-xue;GAO Zhen-wei;LIU Ran(School of Water Conservancy,Shenyang Agricultural University,Shenyang 110161,China;Shenyang Branch of Heilongjiang Agricultural Reclamation Survey,Design and Research Institute Co.,Ltd,Shenyang 110003,China)
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2022年第1期63-72,共10页
Journal of Shenyang Agricultural University
基金
辽宁省科学研究经费项目(LJKZ0696)。
关键词
水质净化
水生植物
组合配置
总氮
总磷
多孔混凝土
water purification
aquatic plants
combination arrangement
total nitrogen
total phosphorus
porous concrete
