The City of Fargo completed a Facility Plan of their Water Treatment Plant (WTP) in 2011 to address two main issues: increasing water demands and high sulfate concentrations within a raw water source (Sheyenne River) primarily due to Devils Lake flooding. Reverse Osmosis (RO) was recognized as the most appropriate technology for sulfate reduction, ...

The paper and presentation is of interest to utilities that are challenged by total organic carbon (TOC), Geosmin, and MIB in their source water and are considering the use of membrane filtration to meet disinfection by-product (DBP) maximum contaminant levels (MCLs) and address taste and odor (T&O). Current operations are compared from plant to p...

The City of Fargo Water Treatment Plant (WTP) recently piloted GE submerged ZeeWeed 1000, Siemens encased MemCor L20N, and Pall encased UNA-620A membranes for its new 15 million gallons per day (mgd) membrane WTP. The source water Sheyenne River quality is challenging for membrane treatment: elevated total dissolved salts, high total organic conten...

Surface waters, from a water treatment perspective, can be difficult to treat due to variations in seasonal source water quality. The City of Grand Forks, ND water treatment plant (GFWTP) utilizes surface water that is further complicated with high organic material (influent TOC concentrations averaged 14 mg/L and range from 4-26 mg/L seasonally). ...

City of Fargo North Dakota has a surface water reverse osmosis system (RO) which requires brine concentrate discharge management back to a river that meets NPDES permit requirements. Contaminants of concerns are sulfates and heavy metals. Model simulations performed to determine proper mixing zone....

This paper discusses the lessons learned at the City of Fargo and the City of Grand Forks, North Dakota, water reuse facilities. A 1.4 MGD Effluent Reuse Facility (ERF) was constructed in the fall of 2008 to supply water to an ethanol plant. During the summer of 2014, a 4-month pilot study was performed to investigate an integrated membrane system ...

This paper summarizes the steps, processes, and results for the membrane solution on a challenging surface water in Grand Forks, ND and includes the following: Introduction; Initial Plant Design; Membrane Feasibility Piloting; Membrane Optimization Piloting; Technology Selection; and Conclusion....

Membrane facilities are becoming a common and economical form of water treatment. Special design and operational considerations must be made when using in cold climates, as their efficiencies can be affected by changes in water density. Reviewing published literature combined with operational experience from both pilot and full scale membrane syste...

This presentation will summarize findings of a literature search and utility survey on the effects of large wildfires on water quality, especially in regards to membrane microfiltration and pre-treatment systems. The intent is to illuminate potential mitigation measures that can be taken to improve membrane feed water quality after a large-scale fi...

A new quantitative procedure is proposed in this manuscript to aid engineers/investigator to analyze membrane pilot study data and select appropriate membrane design flux. This presentation will step wise demonstrate how this procedure was successfully used in two membrane water treatment plants final design in last four years....

The City of Grand Forks recently commissioned a green field WTP that was decades in the making. The layout and treatment systems of the new facility take into account the flashy water quality of both the Red Lake and Red Rivers to dampen the affects of several factors, including sulfates, taste and odor, hardness, turbidity, and water availability....