process nanofiltration membrane Articles
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Infectious risk assessment of reclaimed water by UF membrane treatment process focusing attention on norovirus
The aim of this study was to propose a risk assessment method for infectious diseases, using reclaimed water as a case study. To evaluate the infectious risk of norovirus (NoV) in various applications of the reclaimed water, five types of ultrafiltration (UF) membrane treatments were considered: (1) coagulation with low pH + UF membrane process, (2) UF membrane process alone, (3) UF + ...
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Nanofiltration (NF) Process In Water and Wastewater Treatment
https://www.yasa.ltd/post/what-is-nanofiltration-nf-process-in-water-treatment Nanofiltration (NF) is a membrane treatment process primarily used to separate dissolved solutes from water. The process of movement of solvent through a semipermeable membrane from the solution to the pure solvent by applying excess pressure on the solution side is called nanofiltration. Nanofiltration (NF) ...
By YASA ET
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Estimated costs of implementation of membrane processes for on-site greywater recycling
Greywater reuse inside buildings is a possible way to preserve water resources and face up to water scarcity. This study is focused on a technical-economic analysis of greywater treatment by a direct nanofiltration (NF) process or by a submerged membrane bioreactor (SMBR) for on-site recycling. The aim of this paper is to analyse the cost of recycled water for two different configurations (50 and ...
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Membrane process for spring water treatment in the Tula Valley: assessment of physicochemical and microbiological parameters in a non-conventional water source
A nanofiltration (NF) membrane pilot plant was tested to treat water from a spring located in the Tula Valley. Conventional physicochemical parameters and the pathogenic content were analyzed at the inlet and outlet (permeate) of the process. Ninety-five per cent removal of heterotrophic bacteria was obtained by the membrane and complete removal of all other pathogens was achieved. The membrane ...
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Removal of Cd(II) ions from aqueous solution and industrial effluent using reverse osmosis and nanofiltration membranes
Industrial effluents loaded with cadmium have contributed to the pollution of the environment and health troubles for humans. Therefore, these effluents need treatment to reduce cadmium concentration before releasing them to public sewage. The purpose of the research is to study the major role of reverse osmosis (RO) and nanofiltration (NF) processes, which can contribute to the removal of ...
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Removal of Cd(II) ions from aqueous solution and industrial effluent using reverse osmosis and nanofiltration membranes
Industrial effluents loaded with cadmium have contributed to the pollution of the environment and health troubles for humans. Therefore, these effluents need treatment to reduce cadmium concentration before releasing them to public sewage. The purpose of the research is to study the major role of reverse osmosis (RO) and nanofiltration (NF) processes, which can contribute to the removal of ...
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Assessment of nanofiltration and reverse osmosis potentialities to recover metals, sulfuric acid, and recycled water from acid gold mining effluent
This work assessed the potential of nanofiltration (NF) and reverse osmosis (RO) to treat acid streams contaminated with metals, such as effluent from the pressure oxidation process (POX) used in refractory gold ore processing. NF and RO were evaluated in terms of rejections of sulfuric acid and metals. Regarding NF, high sulfuric acid permeation (∼100%), was observed, while metals were ...
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Boron removal from brackish water by reverse osmosis and nanofiltration membranes: application of Spiegler–Kedem model and optimization
Drinking water should contain certain chemicals only in limited quantities. Boron, one of these chemicals which is considered as a threatening compound and is difficult to eliminate from water. The purpose of the research is to study the major role of reverse osmosis (RO) and nanofiltration (NF) process which can contribute to the removal of this inorganic element from brackish water. For ...
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Removal of antibiotic resistant E. coli in two Norwegian wastewater treatment plants and by nano- and ultra-filtration processes
The effectivity of different treatment stages at two large wastewater treatment plants (WWTPs) located in Oslo, Norway, to remove antibiotic resistant Escherichia coli from municipal wastewater was investigated. The WWTPs were effective in reducing the total cultivable E. coli. The E. coli in WWTP samples were mainly resistant to ampicillin (6–27%) and trimethoprim-sulfamethoxazole (5–24%), ...
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Chlorine requirement for biologically stable drinking water after nanofiltration
There is considerable interest in minimizing the chlorine residual in Japan's tap water because of increasing consumer complaints about the chlorinous odor of drinking water. However, minimization of the chlorine residual requires stricter control of biodegradable organics in finished water to ensure biological stability during water distribution. In this context, we investigated the ...
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Recovery of salts from ion-exchange regeneration streams by a coupled nanofiltration–membrane distillation process
Ion-exchange tap water demineralization for process water preparation results in a saline regeneration wastewater (20–100 mS cm−1) that is increasingly problematic in view of discharge. A coupled nanofiltration–membrane distillation (NF-MD) process is evaluated for the recovery of water and sodium chloride from this wastewater. NF-MD treatment of mixed regeneration ...
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The color removal and fate of organic pollutants in a pilot-scale MBR-NF combined process treating textile wastewater with high water recovery
A combination of membrane bioreactor (MBR) and nanofiltration (NF) was tested at pilot-scale treating textile wastewater from the wastewater treatment station of a textile mill in Wuqing District of Tianjin (China). The MBR-NF process showed a much better treatment efficiency on the removal of the chemical oxygen demand, total organic carbon, color and turbidity in comparison with the ...
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Membranes for Industrial Wastewater Treatment: A Sustainable Solution for Cleaner Industries
Industrial processes play a vital role in powering economies and providing essential goods and services. However, these processes often generate large volumes of wastewater that can be laden with pollutants, chemicals, and other contaminants harmful to the environment and public health. To address these challenges, membranes have emerged as cutting-edge technology for industrial wastewater ...
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Luoyang Leachate Treatment Project
Capacity: 500m³/d Process: MBR+NF+RO+DT The effluent water quality meets the discharge standard. Jiarong- headquartered in Xiamen, China- was founded in 2005. We are a specialist in industrial membrane separation process. The core technology of Jiarong includes Disk-tube RO membrane system, Spiral-tube RO membrane system, Tubular UF membrane system and Micro-tube NF/RO membrane system etc. ...
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Nanofiltration: properties and uses
Untitled Document Koch Membrane Systems' Henia and Jorge Yacubowicz outline the uses and benefits of nanofiltration. Modern crossflow filtration technology has principally evolved during the last thirty years, following the significant advancements in polymer chemistry over the same time. Today, a vast majority of crossflow filtration installations utilise polymeric ...
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Shandong Linyi Chemical Plant Chemical Wastewater - Case Study
Application: Chemical wastewater Scale: 20 tons / hour * 2 Process: UF-MTNF-MTNF, UF-MTRO-MTRO Time: 2015 INTRODUCTION In the treatment of high-salt, high-temperature, high-pH chemical production wastewater, Jiarong uses a tubular ultrafiltration membrane plus two-stage nanofiltration membrane treatment process to separate the different salts in the wastewater, and produce water and ...
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Arsenate removal using a combination treatment of precipitation and nanofiltration
A combination treatment of Ca-precipitation and nanofiltration membrane was studied to remove arsenate from water. The selected nanofiltration membrane was an amphoteric charged membrane, proved by the results of ATR-FTIR spectra and zeta potential. The arsenate and calcium removal efficiencies had the lowest values at the isoelectric point of the nanofiltration membrane, attributed to the ...
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Nanofiltration Ceramic Membrane Element
Ceramic Nanofiltration membrane is relatively recent membrane filtration system, with the purpose of softening and removal of disinfection by-product precursors such as natural organic matter and synthetic organic matter. More ultrafiltration membrane system details here! CHARACTERISTICS OF NANOFILTRATION CERAMIC MEMBRANE ELEMENT Chemical, mechanical and thermal stability Ability of steam ...
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