Pilot scale assessment of methane capture from low concentration sources to town gas specification by pressure vacuum swing adsorption (PVSA)

2021 ◽  
pp. 130810
Author(s):  
Guoping Hu ◽  
Qinghu Zhao ◽  
Mitch Manning ◽  
Li Chen ◽  
Lanjin Yu ◽  
...  
Keyword(s):  
Pilot Scale ◽  
Low Concentration ◽  
Scale Assessment ◽  
Vacuum Swing Adsorption

Research on Low Concentration Municipal Wastewater Removal Rate with Chemical-Biological Flocculation and Suspended Medium Process

2012 ◽  
Vol 599 ◽  
pp. 387-390
Author(s):  
Xing Yu Bian ◽  
Xing Sheng Kang ◽  
Yi Li ◽  
Yu Lin Sun ◽  
Min Kong ◽  
...  
Keyword(s):  
Municipal Wastewater ◽  
Removal Rate ◽  
Pilot Scale ◽  
Pollutant Removal ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Optimal Operating ◽  
Operational Parameter ◽  
Low Concentration ◽  
Scale Test

In this paper, chemical and biological flocculation and suspended medium process was applied to treat low concentration municipal wastewater in a pilot scale test in order to find the optimum operational parameter. The results showed that: system on pollutant removal mainly on chemical and biological flocculation reaction pool, Under the optimal operating condition, CODCr, TP and SS removal efficiencies reached 75.5％, 76％and 90.5％ respectively, and the CODCr, TP, SS concentrations of effluent meet the National Wastewater Integrated Discharge Standard. The optimum operating conditions according to the local actual situation, running for more than half a year, for the optimization of control parameters for the contrast obtained.

Disinfectant efficacy in distribution systems: a pilot-scale assessment

2008 ◽  
Vol 57 (7) ◽  
pp. 507-518 ◽  
Author(s):  
Graham A. Gagnon ◽  
Hélène Baribeau ◽  
Simon O. Rutledge ◽  
Robert Dumancic ◽  
Adrian Oehmen ◽  
...  
Keyword(s):  
Distribution Systems ◽  
Pilot Scale ◽  
Scale Assessment ◽  
Disinfectant Efficacy

scholarly journals The Dynamic Response and Characteristics of an Oxygen Vacuum Swing Adsorption Process to Step Perturbations. Part 1. Open Loop Responses

2003 ◽  
Vol 21 (4) ◽  
pp. 319-347 ◽  
Author(s):  
C.C.K. Beh ◽  
P.A. Webley
Keyword(s):  
Chemical Engineering ◽  
Adsorption Process ◽  
Pilot Scale ◽  
Open Loop ◽  
Operating Conditions ◽  
Temperature Profiles ◽  
Unit Operation ◽  
Control Loop ◽  
Vacuum Swing Adsorption ◽  
And Control

Oxygen vacuum swing adsorption (VSA) has emerged as an important unit operation in many chemical engineering processes such as iron and aluminium smelting, making oxygen the third largest man-made chemical commodity in the world. Although a mature technology (with the first patents published in the 1970s), oxygen VSA processes are still not well understood due to their complicated batch-like operation, inherent non-linearities and inverse responses associated with the operating conditions. Step perturbations of manipulated variables together with the process response provide valuable information for the study of system dynamics, the extent of interaction and control loop pairings. The first part of this study presents data from input perturbations gathered from a pilot-scale experimental oxygen VSA process. The interesting time-variant temperature profiles, and bed and system pressures, flows and purity are the main focus of the discussion. Furthermore, the possible applications of this knowledge for heuristic-based control are discussed.

scholarly journals Leaded Paint in Cambodia—Pilot-scale Assessment

2015 ◽  
Vol 5 (9) ◽  
pp. 18-24 ◽  
Author(s):  
Sereyrath Lim ◽  
Thomas Murphy ◽  
Kenneth Wilson ◽  
Kim N. Irvine
Keyword(s):  
Pilot Scale ◽  
Scale Assessment

Long-term evaluation of a spectral sensor for nitrite and nitrate

2008 ◽  
Vol 57 (10) ◽  
pp. 1563-1569 ◽  
Author(s):  
L. Rieger ◽  
P. A. Vanrolleghem ◽  
G. Langergraber ◽  
D. Kaelin ◽  
H. Siegrist
Keyword(s):  
Prediction Interval ◽  
Nitrate Concentration ◽  
Pilot Scale ◽  
Low Concentration ◽  
Uv Sensor ◽  
Alarm Systems ◽  
Nitrate Concentrations ◽  
Term Evaluation

A spectral in-situ UV sensor was investigated to measure nitrite and nitrate concentrations in the effluent of the EAWAG pilot-scale plant. The sensor was used with a calibration that was based on data from another WWTP and was operated over a period of 1.5 years. The results showed constant accuracy although the sensor was operated with minimal maintenance (manual cleaning once a month). It could be shown that the sensor was able to accurately predict the nitrite and nitrate concentration with a precision of 0.32 mg N/l (95% prediction interval at mean lab value of 1.15 mg N/l) and 1.08 mg N/l (at 5.55 mg N/l) for nitrite and nitrate, respectively. The UV sensor showed good results for nitrite in the low concentration range and very accurate results for higher concentrations (up to 10 mg N/l). This allows using the sensor for alarm systems as well as for control concepts at WWTPs.

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