Next Article in Journal
Women in Refugee Camps: Which Coping Resources Help Them to Adapt?
Next Article in Special Issue
Current Effects of Cyanobacteria Toxin in Water Sources and Containers in the Hartbeespoort Dam Area, South Africa.
Previous Article in Journal
Exploring the Impact of a Telehealth Care System on Organizational Capabilities and Organizational Performance from a Resource-Based Perspective
Previous Article in Special Issue
Health Implications of Drinking Water Salinity in Coastal Areas of Bangladesh
Open AccessArticle

Removal of High Concentrations of Ammonium from Groundwater in a Pilot-Scale System through Aeration at the Bottom Layer of a Chemical Catalytic Oxidation Filter

1
Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi’an University of Architecture and Technology, Xi’an 710055, China
2
Shaanxi Key Laboratory of Environmental Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
3
School of Urban Planning and municipal engineering, Xi’an Polytechnic University, Xi’an 710048, China
*
Authors to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(20), 3989; https://doi.org/10.3390/ijerph16203989
Received: 17 August 2019 / Revised: 26 September 2019 / Accepted: 2 October 2019 / Published: 18 October 2019
(This article belongs to the Special Issue Drinking Water and Health Risks)
To remove high concentrations of ammonium from groundwater, pure oxygen and compressed air were fed into a chemical catalytic filter and the ammonium removal efficiency was investigated. The experimental results showed that the oxygen content is the critical limiting factor for ammonium removal. Aeration with 40 mL/min pure oxygen or 100 mL/min compressed air from the bottom of the filter supplied adequate oxygen and approximately 4.2 mg/L of ammonium was removed in this process. Moreover, when the aeration device was moved to 1/3 of the height of the filter bed, the required flow rates of pure oxygen and compressed air decreased further and the turbidity removal was improved. Pouring ozone gas into the filter system, which can inactivate bacteria effectively, can also obtain the remarkable ammonium removal, indicating that ammonium removal was mainly due to the chemical catalytic oxidation in this process rather than the biodegradation. This study provides a novel method for removing high concentrations of ammonium from groundwater. View Full-Text
Keywords: drinking water; ammonium; filtration; chemical catalytic oxidation drinking water; ammonium; filtration; chemical catalytic oxidation
Show Figures

Figure 1

MDPI and ACS Style

Zhang, W.; Zhang, R.; Yang, Y.; Huang, T.; Wen, G. Removal of High Concentrations of Ammonium from Groundwater in a Pilot-Scale System through Aeration at the Bottom Layer of a Chemical Catalytic Oxidation Filter. Int. J. Environ. Res. Public Health 2019, 16, 3989.

Show more citation formats Show less citations formats
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