| 梁 善，郭秋萍，杜建军，刘 雯，雷泽湘.生态沟渠对水中氮磷去除效果的模拟研究[J].广东农业科学,2019,46(12):74-82 |
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生态沟渠对水中氮磷去除效果的模拟研究 |
| Simulation Study on the Absorption of Nitrogen and Phosphorus in Water by Ditch Plants |
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| DOI：10.16768/j.issn.1004-874X.2019.12.010 |
| 中文关键词: 模拟生态沟渠 农田污水 水力停留时间 植物组合 生物量 脱氮除磷 |
| 英文关键词: simulated ecological ditch farmland sewage hydraulic retention time (HRT) plant combinations biomass nitrogen and phosphorus removal |
| 基金项目:广东省农业资源环境共性关键技术研发创新团队建设项目（粤农函 [2019]1019 号）；广州市科技计划项目（201704020187） |
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| 中文摘要: |
| 【目的】研究不同进水流量下不同植物立体组合的生态沟渠对氮磷的去除效果，为田间生态沟渠的
构建提供参考。【方法】利用室内搭建的生态沟渠模拟装置，开展不同植物组合 C1（再力花 Thalia dealbata -
大薸 Pistia stratiotes - 九冠草 Echinodorus major）、C2（再力花 T. dealbata - 凤眼莲 Eichhornia crassipes - 黑藻
Hydrilla verticillata）和不同进水流量处理对水中氮磷的去除效果研究。【结果】不同植物组合和不同进水流量
处理对水中氮磷去除效果不一。低进水流量（60 L/h）有利于植物生长且对水中氮磷吸收效果较好，此流量下，
运行 26 d 后，C1 与 C2 的总氮去除率分别达到 36.74% 和 34.91%，氨氮去除率均达 97% 以上，总磷去除率均达
95% 以上。总磷和铵态氮质量浓度分别达到国家地表水环境质量标准Ⅱ、Ⅰ类水质标准。【结论】不同进水流
量 C2 生物量增长均高于 C1，但 C1 对氮磷的吸收量高于 C2，去除效果较好。 |
| 英文摘要: |
| 【Objective】The effect of ecological ditch of different three-dimensional plant combinations on nitrogen
and phosphorus removal under different influent flow was studied to provide reference for the construction of the field
ecological ditch.【Method】The removal efficiency of nitrogen and phosphorus in water by different plant combinations-C1
(Thalia dealbata-Pistia stratiotes-Echinodorus major) and C2 (T. dealbata - Eichhornia crassipes-Hydrilla verticillata)
and different influent flow treatments was studied by using an indoor ecological ditch simulation device.【Result】The
removal efficiency of nitrogen and phosphorus in water by different plant combinations and different influent flow treatments
was different. The results showed that the low influent flow rate (60 L/h) was beneficial to plant growth and had a good effect
on nitrogen and phosphorus absorption in water. At this flow rate, the total nitrogen removal rates of C1 and C2 were 36.74%
and 34.91%, the ammonia nitrogen removal rate was over 97%, and the total phosphorus removal rate was over 95% after
26 days of test operation. The concentrations of total phosphorus and ammonia nitrogen reached the Class Ⅱ and Ⅰ water
quality standards of national surface water environmental quality standards, respectively.【Conclusion】Under differentinfluent flows, the biomass growth of C2 was higher than that of C1, but the absorption of nitrogen and phosphorus by C1 was
higher than that of C2 and the removal effect was better. |
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