Investigations on the Cleaning Agent in A RO Hollow Fine-Fiber Module
This work was carried out to the make-up water for the boilers at the Tabriz power plant in Iran is treated by a reverse osmosis (RO) process.In this work foulants, cleaning agent on the membrane surface were investigated.The results for EDTA and oxalic acid for removal of foulant on the hollow fine-fiber surface, indicated that SDS and Goli cleaner are not suitable. It was concluded that EDTA and oxalic acid are more effective.
Investigation into the fouling mechanism in a RO hollow fine-fibre module
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Numerical Simulation for Natural State of Two-Phase Liquid Dominated Geothermal Reservoir with Steam Cap Underlying Brine Reservoir
Hydrothermal reservoir which liquid-dominated hydrothermal reservoir is a type of geothermal reservoir that most widely used for power plant. The exploitation of mass and heat from the geothermal fluid will decrease the pressure in the reservoir over time. Therefore the pressure drop in the reservoir will have an impact on the formation of boiling zones or boiling will increase. The impacts are an increase in the fraction of steam, dryness, in the reservoir and with good vertical permeability will form a steam cap underlying the brine reservoir. The two- phase liquid dominated reservoir is sensitive to the porosity and difficult to assign average properties of the entire reservoir when there is boiling zone in some area of the reservoir. These paper showed successful development of two-phase liquid dominated geothermal reservoir and discussed the formation of steam cap above brine reservoir through numerical simulation for state natural conditions. The natural state modeling in steam cap shows a match with the conceptual model of the vapor-dominated developed. These paper also proofed the presence of transition zone, boiling zone, between steam cap and brine reservoir.