Membrane processes can be classified in many ways, based on nature, structure or driving force. Hydrostatic pressure differences are used in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO) and gas separation as the driving force for mass transport through the membrane.
Growing range of applications spans the water treatment spectrum
Committee members suggest that the contribution of water softeners can be addressed first
Focusing on voluntary limits, the head of the Arizona Salinity Committee suggested last month that legislative solutions may not be attempted in the upcoming 2013 session.
Rep. Karen Fann, who spearheaded the creation of the committee, said she will only run a bill if there is a good product that has been vetted by all stakeholders and has enough support to have a 90% chance of passing. Otherwise, a bill should not be introduced until 2014, she said.
These developments came at a meeting of the Technical Advisory Subcommittee of the committee.
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R2 and M2-Series RO systems are engineered and manufactured for commercial and light industrial applications and for feed waters up to 10,000 TDS. These high-efficiency systems use low-energy membrane elements that deliver high quality water at low operating pressures. This in turn makes AXEON R2 and M2-Series the first low-energy brackish water systems in the marketplace.
As U.S. water infrastructure continues to age, it is beginning to impact water quality. Jeff Zagoudis, contributing editor for Water Quality Products, spoke with Allan Connolly, vice president of operations and engineering at Culligan, about the problem and what is being done to solve it.
Jeff Zagoudis: How would you describe the current state of water infrastructure in the U.S.?
Water Quality Products invited Joseph F. Harrison, P.E., CWS-VI, technical director of the Water Quality Association (WQA), to give an overview of current industry issues and what to expect at the upcoming Mid-Year Leadership Conference, to be held Sept. 5-7 in Nashville, Tenn.
Overcoming measurement obstacles in the desalination process
The geographically remote region around Puerto Bolívar is very arid, with desert-like conditions and little or no water available for the port’s operations.
Although the pump is a relatively small part of the overall cost of an RO system, expenses resulting from downtime and inefficiency quickly can diminish the productivity of the system and your return on investment. Due to the corrosive atmosphere and high demands on these sea water RO systems, special attention is required in the pump selection process. There are several key factors that will help to ensure optimum pump and system performance.