FERAZUR®/MANGAZUR® SPECIFIC TECHNOLOGY

Both manganese and iron are found in surface and ground waters at varying concentration levels. Even at low concentrations, these metals can cause a host of problems in water, including metallic taste, discoloration, laundry spotting, pipe scaling, and fixture staining.

Conventional iron and manganese removal plants rely on physicalchemical reactions using special media, intense aeration, or chemical oxidation. Disadvantages of physical-chemical processes include the expense of chemical consumption, the frequent need for backwash, limited filtration rates, time-consuming operation and maintenance, and inconsistent effluent quality.

HOW IT WORKS

During the process, bacteria attach to Degremont Technologies’ Biolite™ S filter media - designed specifically for biological removal of metals. Biolite™ media acts as a support for bacteria, enables high-rate filtration, and does not require periodic replacement or regeneration. Degremont Technologies’ Ferazur®/Mangazur® process controls the environmental conditions within the filter, ensuring the development of an efficient biofilm.

The selected microorganisms oxidize iron and manganese into extremely dense precipitates, enabling three to five times the metal retention when compared to chemically-formed precipitates. Arsenic removal is achieved through biocatalytic oxidation and absorption with the iron oxides that are continuously produced in the filter.

While providing consistent treated water quality, Ferazur®/Mangazur® systems also provide operational flexibility, and backwashes can be performed with raw or treated water.