Abstract
Raw water from the lake contains residual values of suspended solids and Fe. Elimination of this pollution is proposed in a clarifier, in the sand filter bed, and with activated carbon. The clarifier will provide production of clarified water to be added to cooling circuit system and further for filtration and for demineralized water production.
A high salt concentration in the filtered water determines the reverse osmosis technology as the demineralization step. The demineralization consists of two in series operated stages of reverse osmosis. Permeate from the RO 1° is brought first to an aeration tower. The aeration is included to remove CO2 that is formed after adding sulfuric acid before the RO 1°. The aerated water will be led from accumulation tank to the RO 2°, which ensures high quality of water for the following transport. Both stages of RO will be equipped with supplementary equipment for cleaning. Permeate from RO 2° will be led by pumps to EDI technology (electro deionization). EDI is a separation process, which belongs to the group of electro membrane processes during which comes to separation of negatively charged particles from positively charged ones to corresponding electrodes.
The effluents from Demineralization plant and leakages from chemical systems are collected, mixed, and neutralized in the neutralization tanks. Sulfuric acid or caustic soda are dosed into the waste water according to the pH value.
Condensate from machine room is delivered to mixed bed filters. The mixed bed is a mixture of strongly cation exchanger and strongly anion exchanger. After polishing in the Mixed Bed Filters, the condensate is led from into condensate circuit in the machine room.
Part of the technology of water treatment is also a chemical storage system and a chemical dosing system.
Abbreviations
- AC:
-
Activated carbon
- CIP:
-
Cleaning in place
- CO:
-
Civil object
- EDI:
-
Electro-deionization
- PS:
-
Process system
- RO:
-
Reverse osmosis
- SDI:
-
Silt density index
- TDS:
-
Total dissolved solids
- TOC:
-
Total organic carbon
- WTP:
-
Water treatment plant
References
Hübner P (2015) Úprava vody v energetice [Water treatment in energy] Vysoká škola chemicko-technologická v Praze, Prague (in Czech)
Pitter P (2015) Hydrochemie [Hydrochemistry] Vysoká škola chemicko-technologická v Praze, Prague (in Czech)
Wünsch J (1981) Technická příručka pro pracovníky oboru úprav vody [Technical handbook for water treatment workers] N.P. ČKD DUKLA Prague (in Czech)
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Tauchmann, J., Kučera, P. (2024). Yunus Emre Power Plant Water Management, Case Study Turkey. In: Lahnsteiner, J. (eds) Handbook of Water and Used Water Purification. Springer, Cham. https://doi.org/10.1007/978-3-319-78000-9_107
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DOI: https://doi.org/10.1007/978-3-319-78000-9_107
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