垂直流人工湿地强化农村生活污水脱氮试验研究

doi:10.3969/j.issn.1000-5641.2018.06.007

华东师范大学学报(自然科学版) ›› 2018, Vol. 2018 ›› Issue (6): 59-67.doi: 10.3969/j.issn.1000-5641.2018.06.007

垂直流人工湿地强化农村生活污水脱氮试验研究

崔贺^1,2, 陆昕渝^1,2, 常越亚^1,2, 黄民生^1,2, 李丹^1,2, 何岩^1,2, 曹承进^1,2

1. 华东师范大学生态与环境科学学院, 上海 200241;
2. 华东师范大学上海市城市化生态过程与生态恢复重点实验室, 上海 200241

收稿日期:2018-09-04 出版日期:2018-11-25 发布日期:2018-12-01
通讯作者: 黄民生,男,教授,博士生导师,研究方向为水环境治理与修复.E-mail:mshuang@des.ecnu.edu.cn. E-mail:mshuang@des.ecnu.edu.cn
作者简介:崔贺,男,博士研究生,研究方向为水环境治理与修复.E-mail:2625367386@qq.com.
基金资助:
国家自然科学基金（41877477）；国家科技重大专项（2018ZX07208008）

Enhanced denitrification for rural domestic sewage by a vertical flow constructed wetland

CUI He^1,2, LU Xin-yu^1,2, CHANG Yue-ya^1,2, HUANG Min-sheng^1,2, LI Dan^1,2, HE Yan^1,2, CAO Cheng-jin^1,2

1. School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
2. Shanghai Key Laboratory for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200241, China

Received:2018-09-04 Online:2018-11-25 Published:2018-12-01

摘要/Abstract

摘要： 以"陶粒"单一填料和"陶粒+沸石"组合填料的两种垂直流人工湿地试验装置为研究对象，评价两种试验装置用于农村生活污水的脱氮性能，并结合湿地植物对TN去除的贡献率及微生物群落多样性解析其脱氮机理，以期为该湿地系统服务于农村生活污水强化脱氮的工程化应用提供理论依据.结果表明：采用"陶粒+沸石"组合填料的垂直流人工湿地对污水中NH₄⁺-N及TN的平均去除率高于采用"陶粒"单一填料的垂直流人工湿地的23%和25%，且其出水的NH₄⁺-N及TN浓度均满足一级B标准（GB 18918—2002）的要求；两种垂直流人工湿地中植物吸收对污水中TN去除的贡献率均低于0.5%，因此填料吸附和微生物净化是该湿地系统脱氮的主要途径；采用"陶粒+沸石"组合填料的垂直流人工湿地中的微生物群落结构具有更高的多样性；组合填料式人工湿地的植物根系及填料中具备丰富的硝化和反硝化功能菌群，从而为该湿地系统应用于农村生活污水的强化脱氮提供了有力保障.

关键词: 垂直流人工湿地, 填料组合方式, 农村生活污水, 强化脱氮, 微生物群落

Abstract: Two pilot-scale vertical flow artificial wetlands with "ceramic" as a single filler and "ceramic+zeolite" as composite fillers were studied, and their respective denitrification performance for rural domestic sewage was evaluated. To understand the denitrification mechanism of the two wetlands, the contribution rate of nitrogen removal by plant absorption and the diversity of the microbial community were analyzed. The object of this study was to provide a theoretical basis for the application of this wetland design to enhance denitrification at rural domestic sewage treatment plants. The results show that the mean removal rate of NH₄⁺-N and TN by the vertical flow artificial wetland with "ceramic+zeolite" as composite fillers was 23% and 25% higher, respectively, than that of "ceramic" as single filler; the NH₄⁺-N and TN concentration of the "ceramic+zeolite" wetland both attained Grade 1-B (GB 18918-2002). The contribution rate of plant absorption for nitrogen removal in the two wetlands was both less than 0.5%. Hence, nitrogen removal was primarily dependent on adsorption by the filler materialss and purification by microorganisms. The biofilm of plant roots and fillers in the wetland with "ceramic+zeolite" composite filler had better microbial community diversity. The concentration of bacteria with nitrogen removal capability (nitrification and denitrification) in the two vertical flow constructed wetlands were substantial, enabling enhanced denitrification of rural domestic sewage.

Key words: vertical flow constructed wetland, fillers combination, rural domestic sewage, enhanced denitrification, microbial community

中图分类号:

X522

崔贺, 陆昕渝, 常越亚, 黄民生, 李丹, 何岩, 曹承进. 垂直流人工湿地强化农村生活污水脱氮试验研究[J]. 华东师范大学学报(自然科学版), 2018, 2018(6): 59-67.

CUI He, LU Xin-yu, CHANG Yue-ya, HUANG Min-sheng, LI Dan, HE Yan, CAO Cheng-jin. Enhanced denitrification for rural domestic sewage by a vertical flow constructed wetland[J]. Journal of East China Normal University(Natural Sc, 2018, 2018(6): 59-67.

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垂直流人工湿地强化农村生活污水脱氮试验研究

Enhanced denitrification for rural domestic sewage by a vertical flow constructed wetland

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