ActiGuard Activated Alumina

ActiGuard Activated Alumina for Water Treatment

Trends for water treatment and recycling have become major issues for all type of water applications including potable, storm, agricultural and industrial uses. New challenges are also emerging, linked to new pollutants and zero liquid discharge targets that are being

adopted worldwide. Activated Alumina is considered as one of the best Arsenic and Fluoride removal technologies and has been applied in many applications for water treatment and environmental remediation for example:

• Potable Water: both Arsenic and Fluoride removal, ranging from simple hand pump applications to municipal water systems
• Bottled Water: Removal of undesirable ions from bottled/mineral water sources to optimize quality or taste
• Industrial effluents: Arsenic, Fluoride, Phosphate, Silica, Zinc, Copper, Lead, and Selenium from contaminated waste streams
• Agriculture : Phosphate removal from effluents
• Environmental Remediation near sensitive aquatic environments

ActiGuard AA 400G: The Industrial Standard for Fluoride Removal

AA400G has been developed in order to remove several contaminants in one-step with specific focus on Fluoride.

AA400G has the ability to be regenerated for a more cost effective operation. Regeneration is the best choice for Fluoride removal and may be the most economical route for very large-scale Arsenic systems.

In fact, regeneration is most suited for applications with high contaminant concentrations or high flow-rates, in order to minimize operating costs. ActiGuard AA400G is also employed as a polishing step after “lime treatment” for instance.

As a rule, the performance of activated alumina in contaminants removal depends on the composition and characteristics of the raw water such as pH, Fluoride and competing ion concentrations.

Finally, regeneration will generate a concentrated effluent high in Aluminum and Fluoride. This effluent is normally acceptable for transfer to a sewage treatment facility or can be sent to drying ponds if existing, typically in arid regions.

ActiGuard AAFS50: Three Times Greater Arsenic Uptake Capacity

Axens developed ActiGuard™ AAFS50 to enhance arsenic adsorption capacity versus unpromoted activated alumina. The greater adsorption capacity extends service life and allows cost-effective single use. A regenerable system might be the most economical solution depending on specific case conditions.

ActiGuard™ AAFS50 is a patented Iron enhanced activated alumina (IEAA) used for removal of Arsenic, Fluoride and Phosphate. It can also remove Silica, Zinc, Copper, Lead, and Selenium in certain applications.

ActiGuard AAFS50 has outstanding mechanical properties and resists to harsh treatment conditions. Apart from maintenance phases, backwashing is usually not required thanks to a high resistance to fouling and attrition of the product.

Water System Design

Adsorption capacity and thus service life or cycle time between regenerations is strongly dependent on the water composition and characteristics.  Over many years we at D&F Techniek have developed comprehensive models to predict adsorption capacities and thus adsorption performances. These models have been validated using experimental data at laboratory and industrial scales, including equilibrium Jar tests to confirm capacities with actual water composition.

We are happy to help you make the right choice. Fill in the contact form or contact us to get advice for your situation.