3组水生植物对滏阳河营养盐去除效果研究
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摘要
以滏阳河邯郸段3种水生植物狐尾藻、金鱼藻及篦齿眼子菜为研究对象,通过批式实验,考察植物种类对削减滏阳河原水污染物质的效果,研究3种植物及对照系统对氮、磷、COD_(Mn)等的去除效果。结果表明:经40 d批式实验后,各组反应器对TN,NH_3-N,TP,COD_(Mn)的去除率达62%,64%,42%和67%以上,其中净化效果最佳的植物为金鱼藻;同时,不同植物的含氮量与含磷量与其污染物去除能力不一一对应,但其大小次序与对氮、磷的去除能力基本相似,这可能与植物的吸收作用或植物根系微生物的代谢作用相关。
Taking 3 aquatic plants of Myriophyllum spicatum, Ceratophyllum demersum, Potentilla discifolia in Handan reach of the Fuyang River as study subjects, patch tests were conducted to study the elimination effect of nutrient salt comparing with reference group(without plant in water), including nitrogen, phosphorus and CODMn. The results showed that after 40 days tests, the removal rates of TN, NH3-N, TP and CODMn by 3 aquatic plants and reference group were all higher than 62%, 64%, 42% and 67%. Ceratophyllum demersum was the best in elimination effect. The contents of nitrogen and phosphorus in different plants did not exactly corresponded to the pollutants' removal effect, but the content orders were basically similar to the elimination effect and the cause may be related to the plants′ absorption or the roots' microbial metabolism.
Taking 3 aquatic plants of Myriophyllum spicatum, Ceratophyllum demersum, Potentilla discifolia in Handan reach of the Fuyang River as study subjects, patch tests were conducted to study the elimination effect of nutrient salt comparing with reference group(without plant in water), including nitrogen, phosphorus and CODMn. The results showed that after 40 days tests, the removal rates of TN, NH3-N, TP and CODMn by 3 aquatic plants and reference group were all higher than 62%, 64%, 42% and 67%. Ceratophyllum demersum was the best in elimination effect. The contents of nitrogen and phosphorus in different plants did not exactly corresponded to the pollutants' removal effect, but the content orders were basically similar to the elimination effect and the cause may be related to the plants′ absorption or the roots' microbial metabolism.
引文
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[2] Zhong J,Fan C,Lu Z,et al.Significance of dredging on sediment denitrification in Meiliang Bay,China:A year long simulation study[J].Journal of Environmental Sciences,2010,22(1):68-75.
[3] 相晨,卢剑波,刘芳,等.水生植物对富营养化水体净化效果的初步研究[J].环境科学导刊,2016,35(5):32-37.
[4] 唐千,盛明,王国祥,等.城市污染河道沉积物有机质的氧化稳定性[J].环境化学,2015(3):489-496.
[5] 何娜,张玉龙,孙占祥,等.水生植物修复氮、磷污染水体研究进展[J].环境污染与防治,2012,34(3):73-78.
[6] 王如刚,唐景春,王敏.排污河道原位植物修复技术研究进展[C]//第3届全国农业环境科学学术研讨会论文集,2009.
[7] 韩飞园,周非,刘雪花,等.水生植物重建工程对小柘皋河富营养化水质的净化效果[J].环境科学研究,2011,24(11):1263-1268.
[8] Calheiros C S,Rangel A O,Castro P M.Constructed wetland systems vegetated with different plants applied to the treatment of tannery wastewater[J].Water Research,2007,41(8):1790-1798.
[9] Sun L P,Yang L,Hui J.Nitrogen removal from polluted river by enhanced floating bed grown canna[J].Ecological Engineering,2009,35(1):135-140.
[10] 赵安娜,冯慕华,郭萧,等.沉水植物氧化塘对污水厂尾水深度净化效果与机制的小试研究[J].湖泊科学,2010,22(4):538-544.
[11] Hoffmann C C,Baattrup-Pedersen A.Re-establishing freshwater wetlands in Denmark[J].Ecological Engineering,2007,30(2):157-166.
[12] 张瑞,刘操,孙德智,等.北京地区再生水补给型河湖水质改善工程案例分析与问题诊断[J].环境科学研究,2016,29(12):1872-1881.
[13] 吴小慧,张勇,何岩,等.污染水体净化与生态修复中水生植物光合、呼吸特性研究进展[J].净水技术,2009,28(6):5-7.
[14] 徐治国,何岩,闫百兴,等.湿地植物对外源氮、磷输入的响应研究[J].环境科学研究,2007,20(1):64-68.
[15] 周慧芳,刘正辉,李德豪,等.一体化OCO工艺脱氮除磷效果优化的ORP调控策略[J].环境科学与技术,2017(6):61-65.
[16] 卢少勇,金相灿,余刚.人工湿地的氮去除机理[J].生态学报,2006,26(8):2670-2677.
[17] 张博,李真,黄民生,等.水培植物对城市污染河道水体净化的效果[J].净水技术,2014(2):42-47.
[18] 周晓红,王国祥,冯冰冰,等.3种景观植物对城市河道污染水体的净化效果[J].环境科学研究,2009,22(1):108-113.
[19] 李晓东,孙铁珩,李海波,等.人工湿地除磷研究进展[J].生态学报,2007,27(3):1226-1232.