scholarly journals Treatment of Infectious Waste through the Application Rotary Kiln Incinerators and Ozone Technology

2021 ◽  
Vol 4 (4) ◽  
pp. 71
Author(s):  
Khomson Khannam ◽  
Wenich Vattanapuripakorn ◽  
Sathapon Sonsupap ◽  
Jiradanai Sarasamkan ◽  
Umakorn Tongsantia ◽  
...  
Keyword(s):  
Rotary Kiln ◽  
Environmental Protection Agency ◽  
Air Pollutants ◽  
High Efficiency ◽  
Unsolved Problem ◽  
Protection Agency ◽  
Reference Guide ◽  
The Us ◽  
Improper Use ◽  
Infectious Waste

The alarming rate at which infectious waste is growing was an unsolved problem worldwide before the pandemic, and it has only gotten worse. It is especially prominent in the medical services, owing to the improper use or the lack of high-efficiency waste management systems. To address this issue, this paper presents a modification to the conventional rotary kiln incineration method using add-on ozone (O3) at a concentration of 100–160 g/h in order to enhance its efficiency when treating emitted air pollutants. These pollutants of Hg, HF, TSP, SO2, NO2, CO, and HCl were measured, and their percent opacity concentrations were 0.006 mg/m3, 0.680 mg/m3, 21.900 mg/m3, 5.600 mg/m3, 16.300 mg/m3, 13.700 mg/m3, 0.022 mg/m3, and 6%, respectively. The amounts of these air pollutants were considerably lower than those released from a rotary kiln incinerator without the add-on ozone. Additionally, all the measurements were lower than the emission thresholds established in the US Environmental Protection Agency Emission Standards Reference Guide. Therefore, using the proposed rotary kiln incineration method modified with add-on ozone is suitable for use in the elimination of infectious waste in that it drastically reduces air pollution and improves air quality, resulting in environmental improvements aimed at mitigating the devastating impacts pollution has on human health.

scholarly journals Benefits of Electrified Powertrains in Medium- and Heavy-Duty Vehicles

2020 ◽  
Vol 11 (1) ◽  
pp. 12
Author(s):  
Ram Vijayagopal ◽  
Aymeric Rousseau
Keyword(s):  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Fuel Saving ◽  
Heavy Duty ◽  
Protection Agency ◽  
Light Duty ◽  
Design Choice ◽  
The Us ◽  
Light Duty Vehicles ◽  
Heavy Duty Vehicles

The benefits of electrified powertrains for light-duty vehicles are well understood, however sufficient published information is not available on the benefits of advanced powertrains on the various types of medium and heavy duty vehicles. Quantifying the benefits of powertrain electrification will help fleet operators understand the advantages or limitations in adopting electrified powertrains in their truck fleets. Trucks vary in size and shape, as they are designed for specific applications. It is necessary to model each kind of truck separately to understand what kind of powertrain architecture will be feasible for their daily operations. This paper examines 11 types of vehicles and 5 powertrain technology choices to quantify the fuel saving potential of each design choice. This study uses the regulatory cycles proposed by the US Environmental Protection Agency (EPA) for measuring fuel consumption.

scholarly journals Research on the Construction Method of the Service-Oriented Web-SWMM System

2019 ◽  
Vol 8 (6) ◽  
pp. 268 ◽  
Author(s):  
Dawei Xiao ◽  
Min Chen ◽  
Yuchen Lu ◽  
Songshan Yue ◽  
Tao Hou
Keyword(s):  
Environmental Protection Agency ◽  
Global Scale ◽  
Management Model ◽  
Urban Flooding ◽  
Rainfall Runoff ◽  
Protection Agency ◽  
Runoff Simulation ◽  
Storm Water Management Model ◽  
The Us ◽  
Service Oriented

On a global scale, with the acceleration of urbanization and the continuous expansion of cities, the problem of urban flooding has become increasingly prominent. An increasing number of experts and scholars have begun to focus on this phenomenon and build corresponding models to solve the problem. The storm water management model 5 (SWMM5) is a dynamic rainfall-runoff simulation model developed by the US Environmental Protection Agency (EPA); this model simulates urban flooding and drainage well and is widely favored by researchers. However, the use of SWMM5 is relatively cumbersome and limited by the operational platform, and these factors hinder the further promotion and sharing of SWMM5. Based on the OpenGMS platform, this study first encapsulates, deploys, and publishes SWMM5 and further builds the Web-SWMM system for the model. With Web-SWMM, the user can conveniently use network data resources online and call SWMM5 to carry out calculations, avoiding the difficulties caused by the localized use of SWMM5 and enabling the sharing and reuse of SWMM5.

scholarly journals An Interim Protocol for the Mitigation of Radon in Non-Residential Buildings

1994 ◽  
Vol 56 (1-4) ◽  
pp. 9-11 ◽  
Author(s):  
D.L. Wilson ◽  
C.S. Dudney ◽  
R.B. Gammage
Keyword(s):  
Environmental Protection Agency ◽  
Residential Buildings ◽  
Health And Safety ◽  
Protection Agency ◽  
Safety Issues ◽  
The Us ◽  
Process Studies ◽  
Radon Testing ◽  
Fire Codes ◽  
Large Building

Abstract To date, the US Environmental Protection Agency has not published guidance for radon testing, diagnostics, or mitigation within large, non-residential buildings. Current research indicates that large buildings may contain construction features or mechanical systems that could inhibit the installation or operation of a mitigation system. Health and safety issues such as asbestos and fire codes may further interfere with the installation process. Studies also show that elevated radon can be restricted to a particular area or room within a building and not be uniformly distributed. A four-step, sequential protocol has been developed to address these issues and facilitate large building radon mitigation.

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