Next Article in Journal
An Analysis of the Impact of Groundwater Overdraft on Runoff Generation in the North China Plain with a Hydrological Modeling Framework
Previous Article in Journal
Artificial and Natural Water Bodies Change in China, 2000–2020
Previous Article in Special Issue
Bioaugmentation-Enhanced Remediation of Crude Oil Polluted Water in Pilot-Scale Floating Treatment Wetlands
 
 
Article

Nitrogen and Phosphorus Removal Efficiency and Denitrification Kinetics of Different Substrates in Constructed Wetland

by 1, 1,*, 2, 2,* and 2
1
Huadong Engineering (Fujian) Corporation, Fuzhou 350001, China
2
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Jian Liu
Water 2022, 14(11), 1757; https://doi.org/10.3390/w14111757
Received: 24 April 2022 / Revised: 22 May 2022 / Accepted: 23 May 2022 / Published: 30 May 2022
(This article belongs to the Special Issue Pollutants Removal from Wastewater Using Constructed Wetlands)
Constructed wetlands (CWs) are generally used for wastewater treatment and removing nitrogen and phosphorus. However, the treatment efficiency of CWs is limited due to the poor performance of various substrates. To find appropriate substrates of CWs for micro-polluted water treatment, zeolite, quartz sand, bio-ceramsite, porous filter, and palygorskite self-assembled composite material (PSM) were used as filtering media to treat slightly polluted water with the aid of autotrophic denitrifying bacteria. PSM exhibited the most remarkable nitrogen and phosphorus removal performance among these substrates. The average removal efficiencies of ammonia nitrogen, total nitrogen, and total phosphorus of PSM were 66.4%, 58.1%, and 85%, respectively. First-order continuous stirred-tank reactor (first-order-CSTR) and Monod continuous stirred-tank reactor (Monod-CSTR) models were established to investigate the kinetic behavior of denitrification nitrogen removal processes using different substrates. Monod-CSTR model was proven to be an accurate model that could simulate nitrate nitrogen removal performance in vertical flow constructed wetland (VFCWs). Moreover, PSM demonstrated significant pollutant removal capacity with the kinetics coefficient of 2.0021 g/m2 d. Hence, PSM can be considered as a promising new type of substrate for micro-polluted wastewater treatment, and Monod-CSTR model can be employed to simulate denitrification processes. View Full-Text
Keywords: nitrogen; phosphorus; substrates; constructed wetland; kinetics nitrogen; phosphorus; substrates; constructed wetland; kinetics
Show Figures

Figure 1

MDPI and ACS Style

Zeng, Y.; Xu, W.; Wang, H.; Zhao, D.; Ding, H. Nitrogen and Phosphorus Removal Efficiency and Denitrification Kinetics of Different Substrates in Constructed Wetland. Water 2022, 14, 1757. https://doi.org/10.3390/w14111757

AMA Style

Zeng Y, Xu W, Wang H, Zhao D, Ding H. Nitrogen and Phosphorus Removal Efficiency and Denitrification Kinetics of Different Substrates in Constructed Wetland. Water. 2022; 14(11):1757. https://doi.org/10.3390/w14111757

Chicago/Turabian Style

Zeng, Yinjin, Weibin Xu, Han Wang, Dan Zhao, and Hui Ding. 2022. "Nitrogen and Phosphorus Removal Efficiency and Denitrification Kinetics of Different Substrates in Constructed Wetland" Water 14, no. 11: 1757. https://doi.org/10.3390/w14111757

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop