Problem:
On January 22, 2001, the EPA adopted a new standard for arsenic in drinking water at 10 parts per billion (ppb), replacing the old standard of 50 ppb. The rule became effective on February 22, 2002. The date by which systems must comply with the new 10 ppb standard is January 23, 2006, providing additional protection to an estimated 13 million Americans.

Solution:
MARTI proprietary technology allows users to remove arsenic in potable or wastewaters within a wide pH range. Municipalities can use the MARTI systems as an additive in the headwaters of a filter plant, thus removing the arsenic as a solid bound to the MARTI compound ARTI-64™ along with the organic matter in the sand filtration. Industrial sites could easily adapt their wastewater systems to remove arsenic prior to discharge; and resin and carbon block filters to provide total treatment of their drinking waters. MARTI additionally, through joint distribution agreements, can provide units to treat both small and large volumes of water at low costs to the consumer.

Problem:
A south-eastern United Sates landfill experienced high arsenic levels ranging from 30 to as high as 600 ppb, depending on the water source location being pumped and local rainfall. The waste water authority has set a maximum limit of 60 PPB.

Solution:
MARTI surveyed the site and managed the design, construction, start-up, and turnover phase of the entire project. Due to the extremely high levels of arsenic at the site, MARTI installed an extensive, yet cost-effective solution, which included a pre-treatment filtration system, three receiver/discharge columns that utilize the ARTI-64™ technology, regeneration tanks, pumps and control valves; and all electrical components including a PLC for their process. The new system has complete automation capabilityiy and an additional design feature for remote data acquisition.

After single-pass processing, arsenic removal is typically in the single-digit ppb range. The system has complete flexibility in that all columns can be easily configured to run either in series, parallel, or any combination of flow patterns.

Close-up of receiver/discharge columns and associated piping

Mixing and caustic tanks for regeneration stage