process water membrane Articles
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Fowler, GA Municipal - Case Study
Retrofit ADF: 2 MGD (7,571 m3/d) PF: 4.5 MGD (17,034 m3/d) Existing Technology: Hollow Fiber Plant had issues with fouling and processing capacity Pre-selected against GE Water & Process Technologies, Koch Membrane Systems, Microdyn Nadir GmbH, Evoqua Won based on: Lower capex-opex Increased plant capacity ...
By FibraCast
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Delphos, Ohio Municipal - Case Study
FibrePlate’s energy advantage is significant allowing plants to fund upgrades with energy savings 3.8 million gallons per day (“MGD”) average day flow and 7.66 MGD peak flow membrane bioreactor plant retrofit Existing Supplier: Kubota Membrane USA Corporation Plant has issues with fouling and failed membranes and processing capacity has fallen to 1 million gallons per day ...
By FibraCast
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Optimization and economic analysis for a small scale nanofiltration and reverse osmosis water desalination system
This paper presents the results of a techno-economic investigation of a nanofiltration (NF) and reverse osmosis (RO) process for treating brackish water. Optimization experiments of six commercially available small scale RO and NF membranes were carried out using formulated artificial groundwater. A predictive model was developed by using response surface methodology (RSM) for optimization of ...
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Depth exposed membrane for water extraction (DEMWAX) for seawater desalination
Introduction The Depth Exposed Membrane for Water Extraction (DEMWAX) is a novel approach to both fresh surface water treatment and seawater desalination that deploys a system directly within the source water body. The DEMWAXTM system is configured to take advantage of the natural (free) pressure of the source water body to drive a membrane process. This configuration has many advantages over the ...
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Technological approaches to providing safe drinking water for rural and remote areas
Provision of safe drinking water is one of the key drivers in our technological pursuits. A number of habitations are suffering from a variety of water quality problems such as excess salinity, iron, arsenic, fluoride, nitrate and microbial contamination. Simplicity of operation, less dependence on external sources of power supply, minimisation of wastewater, etc., are some of the ground rules to ...
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Evaluation of a bench-scale membrane fouling protocol to determine fouling propensities of membranes during full-scale water reuse applications
There is increasing interest in recycling wastewater effluents for augmentation of existing water supplies. The treatment of wastewater effluents by an integrated membrane system, such as microfiltration pre-treatment followed by reverse osmosis, is the industry standard for groundwater recharge or reservoir augmentation projects. Membrane fouling, especially effluent organic matter fouling, is a ...
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Benefits of membrane technology
For years, coagulation and flocculation, along with settling and granular media filtration, sand filters, and precoat filters using diatomaceous earth, have been the “standard” for removing contaminants from water sources. However, since the early 1990’s membrane filtration has gained momentum and is now considered mainstream technology for this purpose. Advances in material science and membrane ...
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Nalco - GEM Technology successfully implemented at food processor - Case Study
Situation A Midwest food processor used multiple and parallel batch sedimentation reactors with a decanting treatment system to handle waste flows of 100,000 gallons per week. Significant manual attention and operation was required because the flows varied widely based on production schedules. Once sedimentation/decant was accomplished, the supernatant was discharged to city POTW and the ...
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MIEX® Pretreatment to Micro & UltraFiltration
There are currently (in 2006) four full-scale membrane plants in operation where the MIEX® Process pre-treats water prior to the membrane process. Two plants use Microfiltration (MF) and two use Ultrafiltration (UF). This technical note highlights the benefits of MIEX® Treatment prior to MF and UF based on operating data and experience at these facilities. In particular, data is provided from the ...
By Ixom
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Water Treatment Membranes and Their Processes
Filtering out contaminants, even at the nano scale, membranes are a mainstay of water and wastewater treatments In water treatment, membranes are barriers that allow water to pass through but stop unwanted substances from passing through with it. Working much like the cell walls in our bodies, technical membranes filter out salts, impurities, viruses, and other particles from water. A membrane ...
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Distillation Process Can Yield Zero Liquid Discharge System
Many industrial applications produce liquid waste as a by-product of their process. As environmental regulations governing the disposal of industrial wastewater become more stringent, it's imperative that innovative wastewater treatment solutions are used to treat this waste and minimize the environmental impact of disposal. While numerous technologies exist to treat industrial wastewater, Zero ...
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Membrane processing for water treatment in the semiconductor industry
It is the aim of high-purity water production to either fully eliminate organic and ¡florganic compounds, particles, and microorganisms from the water or to reduce their concentrations to values below the detection limits of the most advanced analysis methods. Currently, this problem is solved by means of a multi-stage process chain, in which membrane technology plays a special role atseveral ...
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VIGNEUX, France: Grand Systeme–Elimination of turbidity and microbiological retention
Water is mostly taken from the Seine and then processed in three plants: Vigneux sur Seine, the most innovative, Morsang sur Seine, and Viry Châtillon. The Vigneux treatment plant is thus the link in a chain entirely dedicated to quality. Between 1993 and 1997, the facilityacquired a high-performance ozoning unit and an innovative water refining process, the Ultrafiltration by membranes combined ...
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Optimized Membrane Treatment
LONG LIVE THE MEMBRANE - Dave Johnson, Technical Manager - Water, explores the new technologies that address specific needs for membrane processes used in downstream facilities for water treatment purposes. Membrane processes are becoming popular in downstream processing plants for the production of boiler feed water, treatment and recycling of wastewater and integration into various processes. ...
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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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Efficiency and reliability of membrane processes in a water reclamation plant
Performance of a water reclamation plant using ultrafiltration (UF) and reverse osmosis (RO) treating 280,000 m3/d of wastewater was evaluated over 1 year. Statistical analyses were performed on flow rate, temperature, pH, total suspended solids (TSS), total dissolved solids (TDS), biochemical oxygen demand (BOD5) and total coliforms. Variations in flow rates coincided with those in ...
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Seasonal organics variations: effects on the efficiency of water treatment processes
Natural organic matter (NOM) in source water has created a lot of interest in the field of water purification. It is of particular concern for surface water treatment plants since it can produce undesirable disinfection by-products (DBPs), interferes with the performance of water treatment processes such as coagulation, membrane filtration, and oxidation processes, and leads to bacterial ...
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How Can You Manage and Treat Industrial Wastewater?
Download The Guide To Water Filtration In Industrial Processes Modern membrane technologies allow for the treatment of industrial wastewater solutions to be managed by an all in one system. Dependent on the water issue and the quality of water you want to achieve, multiple units can be combined to create a bespoke water solution for your industrial process. Industrial wastewater is mainly ...
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Industrial membrane processes in the treatment of process waters and liquors
A review on pulp and paper industrial membrane processes using a variety of modules and processes is presented. Membranes are mostly used today to purify process waters and to recover coating colours. Ultrafiltration using tubular membrane modules or cross-rotational (CR) filtration has been widely applied for the purification of process waters. The reuse of UF membrane permeate has decreased the ...
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The ecological impact of membrane-based extraction of phenolic compounds – a life cycle assessment study
Many phenolic compounds show high boiling points, low molecular weights, moderate polarities or high toxicities. Therefore, conventional wastewater treatment is limited or expensive. Recycling of the separated compounds is often not possible. But, if liquid-liquid reactive extraction is linked to a non-porous membrane, some or all of the above mentioned limitations may be overcome. The key ...
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