scholarly journals Analysis of Ozonation Effect on Performance and Water Quality in Closed-System Cooling Tower

Evergreen ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 896-903
Author(s):  
M. I Alhamid ◽  
R. M Miftah ◽  
M. A Rainanda
Keyword(s):  
Water Quality ◽  
Closed System ◽  
Cooling Tower

Reducing Cooling Tower Fill Fouling and Degradation With Water Quality Control

2007 ◽  
Author(s):  
Vickie G. Olson
Keyword(s):  
Water Quality ◽  
Quality Control ◽  
Heat Dissipation ◽  
Structural Integrity ◽  
Cooling Tower ◽  
Quality Analysis ◽  
Water Quality Analysis ◽  
Water Quality Control ◽  
Side Stream ◽  
And Control

Cooling tower fill may be composed of wood or plastic, but it must provide adequate surface area for heat dissipation. Online and field water quality analysis can maximize tower efficiency and minimize maintenance. Uncontrolled levels of pH, bio-growth, or over-application of chemicals cause degradation of the material and plugging. Automatic control of pH conditioner can be accomplished with proven differential pH methods tied to analog and/or digital control. Oxidizing biocide application can be optimized with ORP and halogen analysis and control. Overuse of this type of biocide can also cause wood delignification that can affect the structural integrity of the tower. Another cause of fouling is excessive solids accumulation. Solids buildup can be minimized with side-stream filtration and/or clarification and monitored with low maintenance self-cleaning optical probes.

scholarly journals Performance analysis and water quality after ozone application in closed circuit cooling tower systems

2019 ◽  
Author(s):  
Muhmmad Idrus Alhamid ◽  
Setijo Bismo ◽  
Randa Kelvin ◽  
Ardiyansyah Yatim
Keyword(s):  
Water Quality ◽  
Performance Analysis ◽  
Cooling Tower ◽  
Closed Circuit

IMPACTS OF WATER QUALITY ON VIBRATION-INDUCED WATER DROPLET REMOVAL FOR COOLING TOWER WATER CAPTURE

2019 ◽  
Author(s):  
Ryan Huber ◽  
Nicole Doughramaji ◽  
Erica Schmitz ◽  
Stacy Hutchinson ◽  
Melanie M. Derby
Keyword(s):  
Water Quality ◽  
Water Droplet ◽  
Cooling Tower

scholarly journals Stress responses of juvenile matrinxã (Brycon amazonicus) after transport in a closed system under different loading densities

2008 ◽  
Vol 38 (5) ◽  
pp. 1413-1417 ◽  
Author(s):  
Janessa Sampaio de Abreu ◽  
Ana Isabel Sanabria-Ochoa ◽  
Flávio Daolio Gonçalves ◽  
Elisabeth Criscuolo Urbinati
Keyword(s):  
Water Quality ◽  
Closed System ◽  
Stress Responses ◽  
Water Oxygen ◽  
Tolerant Species ◽  
Plastic Bags ◽  
Total Ammonia ◽  
Plasma Chloride ◽  
Low Levels

Optimum loading density for the transport of matrinxã juveniles was investigated in a closed system with plastic bags. Transport was conducted for 4 h with fish (23.5± 0.4g and 11.6 (0.08cm) starved for 24h at loading densities of 83g L-1 (D1), 125g L-1 (D2), 168g L-1 (D3) and 206g L-1 (D4). Fish were sampled before transport (BT), after transport (AT) and 24h AT. The water quality was monitored before capturing fish in depuration tanks, after transport in plastic bags and in recovery tanks. Water oxygen decreased to values below 4mg L-1 in D2, D3 and D4, temperature was around 32°C, pH 6.5-6.78, total ammonia 1.09-1.7mg L-1, un-ionized ammonia 3.58-9.33x10³mg L-1 and alkalinity 134-165mg CaCO3 L-1. Blood cortisol and glucose concentrations increased in fish of all densities AT and recovered the BT levels 24h after arrival. Osmolality did not change AT but increased 24h AT in fish of all densities whereas plasma chloride decreased inversely to the loading densities after the procedure. Hematocrit decreased 24h AT in fish of all densities but no differences were verified in the number of erythrocytes. No mortality was registered in any treatment during the next week after transport. Matrinxã demonstrated to be a crowding tolerant-species in transport operations besides tolerating low levels of oxygen in the water.

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