Remove iron, manganese, and arsenic to meet or exceed regulatory standards.

Groundwater is susceptible to contaminants such as iron, manganese, and arsenic found in soil and rock. The Pall Aria™ microfiltration membrane system exceeds US EPA standards established by the:

• Surface Water Treatment Rule

Cryptosporidium and Giardia (>6 log reduction)

Bacteria (>4 log reduction of coliform bacteria)

Turbidity and SDI

• Arsenic Rule
  

In addition, the system is compliant with the Disinfection Byproduct Rule: THM and HAA5.

Certifications

• NSF International’s Standard 61
• NSF International Drinking Water Systems Center independent performance testing: arsenic reduced to undetectable levels (below 2 ppb)

Iron and manganese removal
Iron and manganese are secondary aesthetic contaminants in groundwater. They produce red and brown stains, giving the water the appearance of being impure. The consequence is reduced consumer confidence in your product.

You can eliminate iron and manganese using an oxidation process that precipitates these dissolved metals into particulate. The particulate can then be filtered out using a Pall Aria™ system.

Process flow using Pall Aria system to remove iron from groundwater

Process flow using Pall Aria system to remove manganese from groundwater

Arsenic removal
In your geographical area, high arsenic levels may be present in the groundwater. Naturally occurring arsenic is found in two forms: arsenate [As(V)] and arsenate [As(III)]. Under typical groundwater conditions, arsenate is more common and is easier to remove using coagulation and membrane filtration. An oxidation process can be used to convert arsenite to arsenate for coagulation/filtration.

Even when arsenic levels in the feedwater are high, the Pall Aria system can reduce arsenic below the maximum contaminant level when a coagulant dose of 15 mg/L of ferric chloride and proper pH control is used.

Pall Aria systems reduce arsenic to undetectable levels (below 2 ppb).

Process flow using Pall Aria system to remove arsenic from groundwater

Pall Aria Installations for Groundwater Treatment
Pall Aria Systems for Water Treatment Applications Guide
Municipal Water Treatment homepage