ultrafiltration Articles
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UF Membrane Technology
UF Membrane Technology Ultrafiltration (UF) is a variety of membrane filtration in which forces, such as pressure or concentration gradients, cause separation through the semi-permeable membrane. High molecular weight suspended solids and solutes remain in the so-called retentate while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). The pore size of ...
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UF Membrane Technology
Ultrafiltration (UF) is a variety of membrane filtration in which forces, such as pressure or concentration gradients, cause separation through the semi-permeable membrane. High molecular weight suspended solids and solutes remain in the so-called retentate while water and low molecular weight solutes pass through the membrane in the permeate (filtrate). The pore size of the ultrafiltration ...
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Key Benefits of GWT UF Ultrafiltration Systems
UF ultrafiltration technology provides a highly effective treatment solution in tertiary wastewater reuse, process water, and drinking water applications. These applications, are geared toward treating tertiary wastewater, surface water, and grey water sources containing a variety of organic, inorganic particulates and microbiological contaminants. GWT UF utrafiltration systems offers the ability ...
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What is Ultrafiltration’s Role in Water Treatment?
Ultrafiltration with semipermeable membranes can play an important role in water purification because of its compactness and efficiency Ultrafiltration (UF) is a water purification process in which water is forced through a semipermeable membrane. Suspended solids and high-molecular-weight solutes remain on one side of the membrane, the retentate side, while water and low-molecular-weight ...
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Applications of Ultrafiltration Treatment Technology
Water treatment technology is and can be applied to different municipalities, industries, and commercial businesses, each with their own specific water treatment needs. For this reason, it is beneficial to have technologies on hand that are versatile based on the treatment application. For instance, filters are used in almost every water/wastewater treatment application in either pretreatment or ...
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A Water Treatment Guide: Basics of Ultrafiltration
What is ultrafiltration, and how does this process work? What is it ? Ultrafiltration is a form of membrane filtration similar to reverse osmosis, separating solid particles from the liquid influent source. This process lies between microfiltration and nanofiltration in terms of particle capture size removal. It has uses as a prefilter for other treatment processes or as a tertiary polishing ...
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What is Ultrafiltration Treatment, and How does this Process Work?
What is it? Ultrafiltration treatment is a form of membrane filtration similar to reverse osmosis, separating solid particles from the liquid influent source. This process lies between microfiltration and nanofiltration in terms of particle capture size removal. It has applications as a prefilter for other treatment processes or as a tertiary polishing filter in drinking water and wastewater ...
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Removal of Cryptosporidium by wastewater treatment processes: a review
Cryptosporidium is a protozoan parasite that infects humans and various animal species. The environmental stability and the low infectious dose of Cryptosporidium facilitate its transmission by water and food. Discharge of untreated wastewater may result in waterborne or foodborne Cryptosporidium outbreaks, therefore a suitable treatment may prevent its dissemination. Most studies on ...
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Membrane treatment of the bleaching plant (EPO) filtrate of a kraft pulp mill
The objective of this study was to evaluate the use of membrane technology to treat oxygen and peroxide-reinforced extraction stage (EPO) filtrate from a kraft pulp mill bleach plant. Three different types of tubular membranes were tested in a pilot plant: (i) tight ultrafiltration (UF); (ii) open UF followed by nanofiltration (UF + NF); and (iii) nanofiltration (NF). According to the ...
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Sustainability assessment of tertiary wastewater treatment technologies: a multi-criteria analysis
The multi-criteria analysis gives the opportunity to researchers, designers and decision-makers to examine decision options in a multi-dimensional fashion. On this basis, four tertiary wastewater treatment (WWT) technologies were assessed regarding their sustainability performance in producing recycled wastewater, considering a ‘triple bottom line’ approach (i.e. economic, environmental, and ...
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A case study of urban wastewater reclamation in Spain: comparison of water quality produced by using alternative processes and related costs
In Spain, and particularly in the Valencia Region, the scarcity of water resources means that water resource exploitation must be optimized. In this light, reusing the large amounts of treated wastewater is a top priority, especially in agriculture, urban use and the irrigation of golf courses. Rincón de León wastewater treatment plant–water reclamation plant (Alicante, Spain) supplies ...
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Comparing environmental impacts of tertiary wastewater treatment technologies for advanced phosphorus removal and disinfection with life cycle assessment
Different technologies for tertiary wastewater treatment are compared in their environmental impacts with life cycle assessment (LCA). Targeting very low phosphorus concentration (50–120 μg/L) and seasonal disinfection of wastewater treatment plant (WWTP) secondary effluent, this LCA compares high-rate sedimentation, microsieve, dual media filtration (all with UV disinfection), ...
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Occurrence of N-nitrosodimethylamine precursors in wastewater treatment plant effluent and their fate during ultrafiltration-reverse osmosis membrane treatment
The formation of N-nitrosodimethylamine (NDMA) is of major concern among wastewater recycling utilities practicing disinfection with chloramines. The NDMA formation potential (FP) test is a simple and straightforward method to evaluate NDMA precursor concentrations in waters. In this paper we show the NDMA FP results of a range of tertiary wastewater treatment plants that are also the source for ...
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SANASA Capivari II – the first full-scale municipal membrane bioreactor in Latin America
The macro region of Campinas (Brazil) is rapidly evolving with new housing developments and industries, creating the challenge of finding new ways to treat wastewater to a quality that can be reused in order to overcome water scarcity problems. To address this challenge, SANASA (a publicly owned water and wastewater concessionaire from Campinas) has recently constructed the ‘EPAR (Water ...
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Common Issues of UF Filter System Operations
One facet of technological advancement is attempting to mitigate the more glaring issues that consistently crop up due to the nature of a system process. Of course, even with decades of improvement nothing is infallible. In this article, we will discuss the common issues that can occur using UF filtration systems.Ultrafiltration is a pressure driven membrane separation technology that is a ...
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QUA’s Q-SEP Modules Successfully Fit Requirements at Mumbai International Airport
Overview As a part of a massive expansion plan for Chhatrapati Shivaji International Airport located in Mumbai, India, a wastewater recycle project was contracted in 2011 to cater to the growing requirements of the expanded airport. Due to increasingly strict environmental regulations, the treatment of raw sewage wastewater is required before it is allowed to flow into the natural ecological ...
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Monitoring and evaluation of removal of pathogens at municipal wastewater treatment plants
The concentrations and removal of Cryptosporidium, Giardia, and microbial indicators, including somatic coliphages and fecal coliforms were investigated through the wastewater treatment processes at three municipal wastewater treatment plants in Beijing, China. The experimental results showed that the concentrations of Cryptosporidium in untreated wastewater, primary treatment effluent, secondary ...
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Pushing Water Reuse to The Extremes
Large-scale water-reuse treatment plants have had a sustainable impact in populated areas where the volume of water to be treated and reused in a concentrated area makes them practical. Today, the flat-sheet membrane aerated biofilm reactor (MABR) technology that is delivering high-quality wastewater treatment to remote locations is poised to realize the promise of sustainable water reuse in ...
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Water Treatment and Recovery in the Iron and Steel Industry
While water use in the industry is high, actual consumption is low, making treatment for reuse viable The iron and steel industry is often thought of as one of the main forces that drive a nation’s economic and technological progress. Historically, it has seen enormous growth driven by globalization and industrialization. In 2015, global crude steel production weighed in at 89.6 million ...
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Top 3 Benefits of Recycling Wastewater
Recycling wastewater can save money and help the environment Historically, water recycling has been restrained because of seemingly limitless surface and groundwater resources as well as psychological factors. However, now that all sectors are confronting hard limits on traditional sources, water recycling is getting a second look, and many have concluded that water recycling is a no-brainer. ...
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