生态环境学报
生態環境學報
생태배경학보
ECOLOGY AND ENVIRONMENT
2015年
3期
480-486
,共7页
张亚琼%崔丽娟%李伟%李凯
張亞瓊%崔麗娟%李偉%李凱
장아경%최려연%리위%리개
潮汐流%人工湿地%基质%硝化强度%反硝化强度
潮汐流%人工濕地%基質%硝化彊度%反硝化彊度
조석류%인공습지%기질%초화강도%반초화강도
tidal flow%constructed wetland%matrix%nitrification intensity%denitrification intensity
潮汐流人工湿地（Tidal flow constructed wetland, TF-CW）是一种新型人工湿地生态系统，并且在氮去除方面受到了广泛的关注。通过对比4种不同进水方式TF-CW对NH4+-N和NO3--N两种氮形态的处理效果，并分析基质硝化反硝化强度与去除效果之间的相关性以及不同处理深度基质的硝化反硝化强度。结果显示：4种进水方式的湿地模拟装置对NH4+-N的平均去除率差异性显著且与硝化强度差异性一致，闲置时间/反应时间为2∶1(D)的进水方式下基质的平均硝化强度最大，为(1.68±0.29) mg·kg-1·h-1，4种模拟装置的基质平均反硝化强度差异性也显著（P=1.202×10-5），连续流进水方式反硝化强度最大，为(2.99±1.58) mg·kg-1·h-1；TF-CW基质硝化强度与NH4+-N的去除率有明显的正相关性（r2=0.8497，P=4.285×10-14），反硝化强度与NO3--N的出水浓度呈明显负相关关系（r2=0.8448，P=6.939×10-14）；装置上部0~30 cm的处理阶段硝化强度最大，随深度增加变化逐渐减小，反硝化强度在中部的30~60 cm阶段较高。本研究为TF-CW设计改善其运行效果奠定了理论基础，在进行人工湿地设计时需综合考虑NH4+-N和NO3--N的整体去除效果，将潮汐流人工湿地与连续流人工湿地进行组合并合理配置，对污染物的去除更加全面有效。
潮汐流人工濕地（Tidal flow constructed wetland, TF-CW）是一種新型人工濕地生態繫統，併且在氮去除方麵受到瞭廣汎的關註。通過對比4種不同進水方式TF-CW對NH4+-N和NO3--N兩種氮形態的處理效果，併分析基質硝化反硝化彊度與去除效果之間的相關性以及不同處理深度基質的硝化反硝化彊度。結果顯示：4種進水方式的濕地模擬裝置對NH4+-N的平均去除率差異性顯著且與硝化彊度差異性一緻，閒置時間/反應時間為2∶1(D)的進水方式下基質的平均硝化彊度最大，為(1.68±0.29) mg·kg-1·h-1，4種模擬裝置的基質平均反硝化彊度差異性也顯著（P=1.202×10-5），連續流進水方式反硝化彊度最大，為(2.99±1.58) mg·kg-1·h-1；TF-CW基質硝化彊度與NH4+-N的去除率有明顯的正相關性（r2=0.8497，P=4.285×10-14），反硝化彊度與NO3--N的齣水濃度呈明顯負相關關繫（r2=0.8448，P=6.939×10-14）；裝置上部0~30 cm的處理階段硝化彊度最大，隨深度增加變化逐漸減小，反硝化彊度在中部的30~60 cm階段較高。本研究為TF-CW設計改善其運行效果奠定瞭理論基礎，在進行人工濕地設計時需綜閤攷慮NH4+-N和NO3--N的整體去除效果，將潮汐流人工濕地與連續流人工濕地進行組閤併閤理配置，對汙染物的去除更加全麵有效。
조석류인공습지（Tidal flow constructed wetland, TF-CW）시일충신형인공습지생태계통，병차재담거제방면수도료엄범적관주。통과대비4충불동진수방식TF-CW대NH4+-N화NO3--N량충담형태적처리효과，병분석기질초화반초화강도여거제효과지간적상관성이급불동처리심도기질적초화반초화강도。결과현시：4충진수방식적습지모의장치대NH4+-N적평균거제솔차이성현저차여초화강도차이성일치，한치시간/반응시간위2∶1(D)적진수방식하기질적평균초화강도최대，위(1.68±0.29) mg·kg-1·h-1，4충모의장치적기질평균반초화강도차이성야현저（P=1.202×10-5），련속류진수방식반초화강도최대，위(2.99±1.58) mg·kg-1·h-1；TF-CW기질초화강도여NH4+-N적거제솔유명현적정상관성（r2=0.8497，P=4.285×10-14），반초화강도여NO3--N적출수농도정명현부상관관계（r2=0.8448，P=6.939×10-14）；장치상부0~30 cm적처리계단초화강도최대，수심도증가변화축점감소，반초화강도재중부적30~60 cm계단교고。본연구위TF-CW설계개선기운행효과전정료이론기출，재진행인공습지설계시수종합고필NH4+-N화NO3--N적정체거제효과，장조석류인공습지여련속류인공습지진행조합병합리배치，대오염물적거제경가전면유효。
As a new type of constructed wetland ecosystem, tidal flow constructed wetland (TF-CW) has been widely cited in for the research field of nitrogen removal in recent years. By comparing the four different input water type TF-CWs, this study analyzes the relationship between nitrification intensity and NH4+-N removal rate, denitrification intensity and NO3--N effluent concentration. This research also explores the nitrification and denitrification intensity with depth change. Research results show that the different average NH4+-N removal rates were remarkable in four different TF-CWs, which were in accordance with that of nitrification intensity. The largest average nitrification intensity appeared on this TF-CW, idle time/response time was 2∶1, was 1.68±0.29 mg·kg-1·h-1. The average denitrification intensity otherness in four different TF-CWs was also outstanding (P=1.202×10-5). The denitrification intensity was largest in continuous flow constructed wetland, which was 2.99±1.58 mg·kg-1·h-1. Nitrification intensity of TF-CW matrix was significantly positive correlated with NH4+-N removal rate (r2=0.8497,P=4.285×10-14), while denitrification intensity and NO3--N effluent concentration showed a significantly negative correlation relationship (r2=0.8448,P=6.939×10-14). The nitrification intensity attained maximum where reaction depth ranges from 0 cm to 30 cm. With the increasing depth, the nitrification intensity change decreases on the other side. The maximum of denitrification intensity appeared on 30~60cm. This study constructs a theoretical basis for the design and improvement of removal effect of TF-CW. It argued that it is necessary to consider NH4+-N and NO3--N removal efficiency as a whole when design a TF-CW. The efficient nitrogen removal requires combined and reasonable configuration TF-CW and continuous flow constructed wetland.
