[1]黄娟,王世和,鄢璐,等.潜流型人工湿地的脲酶活性分布特性[J].东南大学学报(自然科学版),2008,38(1):166-169.[doi:10.3969/j.issn.1001-0505.2008.01.032]
 Huang Juan,Wang Shihe,Yan Lu,et al.Distribution characteristic of urease activity in subsurface constructed wetlands[J].Journal of Southeast University (Natural Science Edition),2008,38(1):166-169.[doi:10.3969/j.issn.1001-0505.2008.01.032]
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潜流型人工湿地的脲酶活性分布特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第1期
页码:
166-169
栏目:
环境科学与工程
出版日期:
2008-01-20

文章信息/Info

Title:
Distribution characteristic of urease activity in subsurface constructed wetlands
作者:
黄娟 王世和 鄢璐 刘洋 王峰
东南大学土木工程学院, 南京 210096
Author(s):
Huang Juan Wang Shihe Yan Lu Liu Yang Wang Feng
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
潜流人工湿地 脲酶 脱氮效果 植物
Keywords:
subsurface constructed wetland urease nitrogen removal effect plant
分类号:
X524
DOI:
10.3969/j.issn.1001-0505.2008.01.032
摘要:
试验考察了潜流型人工湿地中脲酶活性的分布特性,分析了脲酶分布与湿地植物、微生物状态及污水处理效果间的关系,揭示了潜流湿地的脱氮机制.结果表明:潜流湿地中含氮污染物的去除以生物降解为主要途径,脲酶活性与TN去除率显著相关; 各潜流湿地中,有植物湿地脲酶活性高于空白湿地, 芦苇湿地高于美人蕉湿地,垂直流湿地与水平流湿地无明显差异; 潜流湿地的脲酶活性与微生物数量及活性紧密相关; 湿地各层的脲酶活性均沿程下降,中、上层明显高于下层; 植物根系分泌物直接影响脲酶活性, 使其由根面至非根区递减. 芦苇根际脲酶活性高于美人蕉,新生根根际明显高于老根; 潜流湿地脲酶活性受温度变化影响, 低温不利于微生物生长繁殖, 使湿地脲酶活性降低.
Abstract:
The distribution characteristic of urease activity in subsurface constructed wetlands and its correlation with activity states of plant and microorganism, and wastewater purification effects were studied. Furthermore, nitrogen removal mechanism in subsurface wetland was disclosed. Results show that biodegradation is the dominating approach to remove nitrogenous contaminations in subsurface wetland. Thereby, urease activity is remarkably correlative with total nitrogen removal efficiency. It can be used as one of the important indexes to reflect nitrogen removal effect and select wetland plants. Among experimental wetlands, urease activity in planted wetlands is higher than unplanted wetland; wetlands planted with reed higher than that with canna. However, there is no obvious difference between vertical flow wetland and horizontal flow wetlands. Urease activity in subsurface wetlands is closely interrelated with the magnitude and activity of microorganism. It decreases gradually with distance in every layers of subsurface wetland and is higher in upper and middle layer than that in lower layer. Therefore, the former layers can be considered as the most available regions for pollutants purification in subsurface wetland. The secretion from plant roots results directly in the gradual decrease of urease activity from root surface to non-root-area. The urease activity around reed roots is higher than that around canna roots, and that around fresh roots is higher than that around old roots. Besides, urease activity is influenced remarkably by season changing. Low temperature is disadvantageous to the growth of microorganism and urease activity.

参考文献/References:

[1] Ward W S,Jan M S.Potential use of constructed wetlands to treat landfill[C] //Constructed Wetlands for Wastewater TreatmentMunicipal,Industrial and Agricultural.Chelsea:Lewis Publishers,1989:735-741.
[2] Martin C D,Moshiri G A.Nutrient reduction in an in series constructed wetland system treating landfill leachate[J].Water Science and Technology,1994,29(4):267-272.
[3] Jan Vymazal.Removal of nutrients in various types of constructed wetlands[J]. Science of the Total Environment,2007,380(1/2/3):48-65.
[4] Liang Wei,Wu Zhenbin,Cheng Shuiping,et al.Roles of substrate microorganisms and urease activities in wastewater purification in a constructed wetland system[J]. Ecological Engineering,2003,21(2/3):191-195.
[5] 梁威,胡洪营.人工湿地净化污水过程中的生物作用[J].中国给水排水,2003,19(10):28-31.
  Liang Wei,Hu Hongying.Biological effect in the process of wastewater purification by using constructed wetland[J].China Water & Wastewater,2003,19(10):28-31.(in Chinese)
[6] 张甲耀,夏盛林,崔克辉,等.潜流型人工湿地污水处理系统中芦苇的生长特性及净化能力[J].水处理技术,1998,24(6):363-367.
  Zhang Jiayao,Xia Shenglin,Cui Kehui,et al.Growth characteristics of reed in the subsurface flow constructed wetlands wastewater treatment system and its purification capability[J].Technology of Water Treatment,1998,24(6):363-367.(in Chinese)
[7] Dinges R.Natural systems for water pollution control[M].New York:Van Nostrand Reinold Co.,1982.
[8] Zhou Q H,Wu Z B,Cheng S P,et al.Enzymatic activities in constructed wetlands and di-n-butyl phthalate(DBP)biodegradation[J].Soil Biology & Biochemistry,2005,37(8):1454-1459.
[9] 许光辉,郑洪元.土壤微生物分析方法手册[M].北京:农业出版社,1986.
[10] 王友保,张莉,刘登义.灰渣场土壤酶活性与植被和土壤化学性质的关系[J].应用生态学报,2003,14(1):110-112.
  Wang Youbao,Zhang Li,Liu Dengyi.Relationship among soil enzyme activities,vegetation state and soil chemical properties of coal cinder yard[J].Chinese Journal of Applied Ecology,2003,14(1):110-112.(in Chinese)

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备注/Memo

备注/Memo:
作者简介: 黄娟(1980—),女,博士,讲师,seu070703@163.com.
基金项目: 国家自然科学基金资助项目(50278016).
引文格式: 黄娟,王世和,鄢璐,等.潜流型人工湿地的脲酶活性分布特性[J].东南大学学报:自然科学版,2008,38(1):166-169.
更新日期/Last Update: 2008-01-20