4.7 Article

Influence of nitrogen sources on wastewater treatment performance by filamentous algae in constructed wetland system

期刊

ENVIRONMENTAL RESEARCH
卷 235, 期 -, 页码 -

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2023.116638

关键词

Algae absorption; Algal -bacterial symbiotic; Cladophora sp; Environmental influence; Filamentous algae constructed wetland systems; Nitrogen removal

向作者/读者索取更多资源

This study explored the wastewater treatment capacity of a filamentous algal constructed wetland system under different nitrogen sources. The results showed the fast and stable operation efficiency of the system. Ammonia nitrogen was preferred in Cladophora sp. absorption and assimilation. The symbiosis of bacteria and Cladophora sp. contributed to pollutant removal. Temperature, light intensity, and hydraulic retention time were found to significantly influence the purification ability of plants.
Although filamentous algae have the characteristics of high nutrient assimilation ability, and adaptation to different conditions, studies on their role in water purification of constructed wetlands (CWs) are limited. In this study, the wastewater treatment capacity under different nitrogen sources was explored by constructing a filamentous algal CW (FACW) system. Results confirmed the fast and stable operation efficiency of the FACW system. Ammonia nitrogen was preferred in Cladophora sp. absorption and assimilation. The nutrient consumption rate (NCR) for total nitrogen (TN) of AG was 2.65 mg g-1 d-1, much higher than that of nitrate nitrogen (NG) (0.89 mg g- 1 d-1). The symbiosis of bacteria and Cladophora sp. Contributed to pollutant removal. A stable and diverse community of microorganisms was found on Cladophora sp. Surface, which revealed different phylogenetic relationships and functional bacterial proportions with those attached on sediment surface. In addition, temperature and light intensity have great influence on the purification ability of plants, and low hydraulic retention time is beneficial to the cost-effective operation of the system. This study provides a method to expand the utilization of wetland plants and apply large filamentous algae to the purification of wetland water quality.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据