Presentations by Brad Biagini, ZDD
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Zero Discharge Desalination (ZDD) Technology - High Recovery Solution for Inland Desalination to Significantly Reduce Brine Disposal
This ZDD technology involves the use of EDM to concentrate two streams of the RO concentrate, one CaSO4 rich and one NaCl rich. These streams are then combined to precipitate out gypsum. This stream is then recycled back to the RO feed. This method has shown to increase brackish water RO recoveries from 75% to 99%....
Zero Discharge Desalination (ZDD) Technology Yields High Recovery of Irrigation Water for Reuse
The paper describes two phases of pilot testing to demonstrate that ZDD technology successfully achieved the water treatment goals at Hilmar Cheese. By combining RO and EDM technologies, the scaling concerns prevalent with a conventional RO treatment approach (calcium phosphate, calcium carbonate, silica) were eliminated....
Selection Criteria for High Recovery Membrane-Based Technology Solutions to Address Water Reuse and Concentrate Disposal
Paper focuses on several membrane-based treatment approaches that are aimed at achieving water recoveries greater than 90% to maximize yield while minimizing impacts from waste disposal. Technologies including reverse osmosis, nanofiltration, electrodialysis and electrodialysis metathesis were evaluated. The study confirms that selection of a suita...