Iron and Manganese Removal

ZeeWeed ultrafiltration membranes are oxidant resistant and operate well in presence of high solids. As a result, the process is efficient in treating water sources containing high levels of turbidity, iron and manganese.

The process for a ZeeWeed ultrafiltration treatment plant for removing iron and manganese consists of a simple pre-oxidation step followed by membrane filtration.

Typical Treatment Results

Turbidity < 0.1 NTU
Bacteria > 4 log removal
Giardia Cysts > 4 log removal
Cryptosporidium Oocysts > 4 log removal
Virus Rejection - ZeeWeed 1000 > 4 log
Virus Rejection - ZeeWeed 500 > 2.5 log
Iron < 0.05 mg/L
Manganese < 0.02 mg/L

Feature Profile

Seekonk Water Treatment Plant

The Seekonk Water District draws its water supply from groundwater. For nearly two decades, they had been experiencing high levels of iron and manganese in the water, exceeding National Secondary Drinking Water Regulations. Heavy rains in June 1998 caused severe flooding, resulting in E-Coli contamination in one of the District's six wells.

Several water treatment systems were piloted. After considerable discussion, the District determined that the ZENON process was the most advantageous option, with the ability to bring a former well supply back online that had been unused since 1987, as well as the supply that was contaminated in 1998.