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水培经济植物对污水中磷的吸收利用及去除效果

徐晓锋1,3;史龙新2;许海1;杨林章1   

  1. 1中国科学院南京土壤研究所, 南京 210008;2无锡市太湖湖泊治理有限责任公司, 无锡 214023; 3河南科技大学农学院, 洛阳 471003
  • 收稿日期:2005-06-24 修回日期:2005-10-15 出版日期:2006-04-10 发布日期:2006-04-10

Effects of aquacultured economic plants on phosphorus removal from sewage

XU Xiaofeng1,3;SHI Longxin2;XU Hai1;YANG Linzhang1   

  1. 1Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008, China; 2Wuxi Taihu Lake Treating Company,Wuxi 214023, China; 3College of Agronomy,Henan University of Science and Technology,Luoyang 471003, China

  • Received:2005-06-24 Revised:2005-10-15 Online:2006-04-10 Published:2006-04-10

摘要: 对13种经济植物在污水水培条件下净化污水中磷的能力进行了研究。结果表明,黑麦草(Lolium multiflorum)、水芹(Oenanthe stolonifera)、莴苣(Lactuca sativa var.angustana)、酸模(Polygonum iapathifolium)、生菜(Lactuca sativa)、小葱(Allium ascalonicum)、五月慢青菜(Brassica chinensis)等品种具有较高的净化能力。在4个半月的水培中,TP的去除量分别达到10.27、10.35、6.5~6.89、6.91、5.72、5.46和6.19 g·m-2;TP的去除率分别达到94.5%、95.2%、93.6%~99.3%、99.6%、99.5%、95%和89.2%。植物吸收作用是最主要的污水磷去除机制,沉淀在污水磷净化中的作用较小。污水中磷的去除与植物的生长期密切相关。黑麦草、水芹等7种植物适宜作为苏南地区冬季化粪池污水水培植物。

关键词: 准好氧填埋, 城市固体废物, 填埋气, 甲烷

Abstract: In this paper,13 kinds of economic plants were aqua-cultured in a wastewater system to test their capability in phosphorous removal from sewage.The results showed that among the plants tested,Lolium multiflorum,Oenanthe stolonifera,Lactuca sativa var.angustana,Polygonum iapathifolium,Lactuca sativa,Allium ascalonicum and Brassica chinensis could remove the phosphorus from wastewater effectually.During the 4.5 months of aquaculture,the removal amount of total phosphorus by the 7 plant species was 10.27,10.35,6.5~6.89,6.91,5.72,5.46 and 6.19 g·m-2,and the removal rate was 94.5%,95.2%,93.6%~99.3%,99.6%,99.5%,95% and 89.2%,respectively.Phosphorus absorption by plants was the most important way to remove the phosphorus from sewage,and the efficiency of phosphorus removal was correlated with the growth period of plants.It was indicated that 7 kinds of economic plants including L.multiflorum and O.stolonifera were suitable for aquaculture in south Jiangsu Province in winter.

Key words: Semi-aerobic, Municipal solid waste, Landfill gas, Methane