scholarly journals Membrane Capacitive Deionization for Cooling Water Intake Reduction in Thermal Power Plants: Lab to Pilot Scale Evaluation

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1305 ◽  
Author(s):  
Wim De Schepper ◽  
Christophe Vanschepdael ◽  
Han Huynh ◽  
Joost Helsen
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Power Plants ◽  
Thermal Power ◽  
Simulation Software ◽  
Process Conditions ◽  
Feed Water ◽  
Capacitive Deionization ◽  
Use Efficiency ◽  
Acid Dosage

Cooling of thermal power stations requires large amounts of surface water and contributes to the increasing pressure on water resources. Water use efficiency of recirculating cooling towers (CT) is often kept low to prevent scaling. Partial desalination of CT feed water with membrane capacitive deionization (MDCI) can improve water quality but also results in additional water loss. A response surface methodology is presented in which optimal process conditions of the MCDI-CT system are determined in view of water use efficiency and cost. Maximal water use efficiency at minimal cost is found for high adsorption current (2.5 A) and short adsorption time (900 s). Estimated cost for MCDI to realize maximal MCDI-CT water use efficiency is relatively high (2.0–3.1 € m−3evap), which limits applicability to plants facing high intake water costs or water uptake limitations. MCDI-CT pilot tests show that water use efficiency strongly depends on CT operational pH. To allow comparison among pilot test runs, simulation software is used to recalculate CaCO3 scaling and acid dosage for equal operational pH. Comparison at equal pH shows that MCDI technology allows a clear reduction of CT water consumption (74%–80%) and acid dosage (63%–80%) at pH 8.5.

scholarly journals Global scenarios for significant water use reduction in thermal power plants based on cooling water demand estimation using satellite imagery

Nature Energy ◽  
2019 ◽  
Vol 4 (12) ◽  
pp. 1040-1048 ◽  
Author(s):  
Alena Lohrmann ◽  
Javier Farfan ◽  
Upeksha Caldera ◽  
Christoph Lohrmann ◽  
Christian Breyer
Keyword(s):  
Water Use ◽  
Satellite Imagery ◽  
Water Demand ◽  
Power Plants ◽  
Thermal Power ◽  
Cooling Water ◽  
Demand Estimation ◽  
Thermal Power Plants

FINDING SECURITY PARAMETERS FOR THERMAL POWER PLANTS – A CASE STUDY OF NTPC KORBA

2013 ◽  
Author(s):  
Raj Sekhar Choudhury ◽  
◽  
Sutapa Das ◽  
Keyword(s):  
Power Plants ◽  
Thermal Power ◽  
Thermal Power Plants

Increasing intrinsic water-use efficiency over the past 160 years does not stimulate tree growth in southeastern China

2018 ◽  
Vol 76 (2) ◽  
pp. 115-130 ◽  
Author(s):  
G Guo ◽  
K Fang ◽  
J Li ◽  
HW Linderholm ◽  
D Li ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Tree Growth ◽  
Southeastern China ◽  
The Past ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency
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