Application of plant carbon source for denitrification by constructed wetland and bioreactor: review of recent development
Application of plant carbon source for denitrification by constructed wetland and bioreactor: review of recent development
复制标题
DOI：
10.1007/s11356-016-6324-y
复制
发表时间：
2016-05-01
影响因子：
5.8
通讯作者：
Hou, Zeying
中科院分区：
文献类型：
--
作者：
Hang, Qianyu;Wang, Haiyan;Hou, Zeying
随着硝酸盐水质标准的日益严格，植物碳源被广泛应用于人工湿地和生物反应器的脱氮。然而，不同类型的植物碳源对硝酸盐的去除效果并没有得到全面的评价。本文综述了不同植物碳源的反硝化性能，以及投加方式和预处理对反硝化效果的影响，旨在探讨植物碳源在脱氮（以硝酸盐形式存在）中的准确利用。研究表明，在不同类型的生物反应器和污水处理系统中添加植物碳源均能在一定程度上提高脱氮效率，但植物碳源的投加方式有待于进一步研究和优化。CW和生物反应器强化反硝化的常用碳源是木屑、切碎的水生植物、作物、水生植物凋落物等。CW和生物反应器的推荐最佳C：N比分别为4.0：5.0和1.8：3.0。选择物理和生物预处理为长期反硝化提供有机碳源。
Water quality standard for nitrate becomes more and more strict, and the plant carbon source is widely used for denitrification by constructed wetland (CW) and bioreactor. However, the nitrate removal efficiency by different types of plant carbon source are not evaluated comprehensively. Denitrification performance of different plant carbon sources, and the influence of dosing method and pretreatment are thoroughly reviewed in this paper, which aims to investigate the accurate utilization of plant carbon source for nitrogen (as nitrate) removal. It is concluded that plant carbon source addition for all types of CWs and bioreactors can improve the nitrate removal efficiency to some extent, and the dosing method of plant carbon source for denitrification should be further studied and optimized in the future. The popular carbon sources for CW and bioreactor denitrification enhancement are woodchip, chopped macrophytes, crop plants, macrophytes litters, etc. The recommended optimum C:N ratios for CW and bioreactor are 4.0:5.0 and 1.8:3.0, respectively. The physical and biological pretreatments are selected to supply organic carbon for long-term denitrification.