Zero Liquid Discharge (ZLD) Salt Dryer

Spray drying is a mature technology that was developed over a century ago and has existed in the coal-fired power generation industry for over 30 years to remove SO2 from flue gas. In the waste-to-energy industry, salt dryers are used to treat similar wet FGD effluent to prevent the discharge of wastewater from many plants in the industry.

B&W’s salt drying technology has the capacity to transfer into the coal-fired power generation industry for treatment of FGD wastewater, in part due to its success in similar applications. GEA Niro, B&W’s partner in spray drying, has installed over 25 salt dryers worldwide. Additional technical studies have been conducted to supplement the existing salt dryer experience and ensure this technology can be implemented successfully. B&W has participated in several commercial project evaluations of salt dryer technology in this zero liquid discharge application.

Potential benefits:
• Elimination of wet FGD wastewater discharge
• Allows more time for implementation per Effluent Limitation Guidelines (ELG)
• Uncomplicated process requires limited operator attention while maintaining high reliability
• Option for fabric filter to save fly ash for sale
• Designed for improved material handling

Zero Liquid Discharge

New Build

Babcock & Wilcox (B&W) projects, new build
We consistently demonstrate the ability to successfully execute innovative solutions for our customers, from new equipment to large, complex full-scope engineering and construction projects.

Upgrades / Retrofits

Upgrades and Retrofits by B&W
Modifying, improving and maintaining existing equipment are vital considerations for the long-term viability and profitability of all operations.

Parts / Services

Babcock & Wilcox Parts and Service Support
An extensive network of worldwide regional service centers, field service engineers and technical support personnel are available to provide the customized service and aftermarket solutions for your requirements.

salt drying technology for zero liquid discharge

Project / Case Feature Item

B&W presents a paper on Salt Drying at the International Water Conference 2016.