Industrial Water Industry (Nanofiltration - Water and Wastewater) Articles on Environmental XPRT

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 ...

Oct. 1, 2010

By IWA Publishing

Industrial water reuse opportunities and high temperature compatible membranes

Process condensates represent a real value to the industry as it usually contains several items of potential savings, including but not limited to heat energy and water. In most cases the condensate has become contaminated with unwanted particles or with product carryover making it unfit for direct reuse in the process or as boiler makeup water. Conventional methods use heat exchangers for ...

Mar. 1, 2010

By IWA Publishing

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 ...

Jun. 29, 2015

By IWA Publishing

How Do You Choose the Best Reverse Osmosis and Nanofiltration Membrane System for an Industrial Facility?

As global demands for clean water increase, more and more industrial facilities are looking toward membrane filtration solutions, such as reverse osmosis (RO) and nanofiltration (NF), to help manage intake, process, and waste water treatment. Using membrane filtration can help your facility reuse wastewater and virtually eliminate discharge fees, and depending on the industry or required use, it ...

May 16, 2017

By SAMCO Technologies, Inc.

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 ...

Jun. 29, 2015

By IWA Publishing

Post-treatment of biologically treated wastewater of agrochemical industry by sulfated chitosan composite nanofiltration membrane

The objective of this study is to treat the biologically treated wastewater using sulfated chitosan/polyacrylonitrile (PAN) composite nanofiltration (NF) membrane to improve agrochemical industry wastewater quality for reuse. Although biological treatment is quite efficient, the wastewater does not meet the reuse criteria. Hence, further treatment to improve the water quality is investigated. ...

Jan. 1, 2011

By IWA Publishing

Nanofiltration technology in water treatment and reuse: applications and costs

Nanofiltration (NF) is a relatively recent development in membrane technology with characteristics that fall between ultrafiltration and reverse osmosis (RO). While RO membranes dominate the seawater desalination industry, NF is employed in a variety of water and wastewater treatment and industrial applications for the selective removal of ions and organic substances, as well as certain niche ...

Feb. 26, 2015

By IWA Publishing

Desalination and water recovery: control of membrane fouling

Ultrafiltration (UF), Nanofiltration (NF) and Reverse Osmosis (RO) technologies are widely used for the production of safe drinking water, and for the recovery of reusable water from various industrial effluent streams. The most commonly encountered phenomenon in these processes, especially in water recovery application, is membrane fouling, and control of membrane fouling is regarded as a ...

Apr. 11, 2006

By Inderscience Publishers

Efficiency evaluation of textile basic dye removal from water by nanofiltration

Industrialization and urbanization have resulted in rapid deterioration of water quality. The scientific evidences prove that the effluents released from different industries e.g. textile, leather, paint etc. comprise of different hazardous and toxic compounds, some of which are known carcinogens and others probable carcinogens. The emergence of industrial centers without a corresponding growth ...

Jun. 30, 2007

By University of Tehran

What Is a Boiler Feed Water Treatment System and How Does It Work?

For industrial companies using a boiler for its facility, some type of boiler feed water treatment system is usually necessary to ensure an efficient process and quality steam generation. The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime, expensive maintenance fees, and boiler failure as a result of scaling, ...

Sep. 26, 2016

By SAMCO Technologies, Inc.

UAT - 2.7 MGD Nanofiltration System for Franklin County Water Service Authority

A new, state-of-the-art surface water treatment plant is scheduled for construction in Russellville, Alabama. Paterson Candy North America, a Division of Black & Veatch Construction, Inc., has contracted Severn Trent Services to provide the 2.7 MGD nanofiltration system to the Franklin County Water Service Authority who will oversee the Russellville ...

Jan. 1, 2007

By Industrie De Nora S.p.A. | De Nora Water Technologies

Influence of organic fouling and operating conditions on nanofiltration membranes to reduce phenol concentration in natural waters

Phenol is a product widely used in manufacturing and as a disinfectant for industrial and medical applications. The treatment of aqueous effluents polluted with phenol and phenolic species has deserved much attention in the last years due to the toxicity and low biodegradability of those organic compounds. Nanofiltration (NF) has a great potential to remove these contaminants. The main objective ...

Jan. 1, 2011

By IWA Publishing

Water Recovery from an Aluminum Can Manufacturing Process Using Spiral-Wound Membrane Elements

Abstract A waste treatment unit has been designed to recover water and various components from an aluminum can manufacturing process. Due to the scarcity of water in the Middle East and its inherent cost, water recovery is both necessary and cost effective. The manufacturing process generates: 1) an 11,356 L/hr (50 gpm) aqueous stream contaminated with hydrofluoric acid, dissolved aluminum, and ...

Jan. 1, 2000

By GE Water & Process Technologies

Membrane technology for the future treatment of paper mill effluents: chances and challenges of further system closure

The pressure on the European paper industry to further close its water circuits has increased significantly during the past decade. Since the technologies of the past can no longer meet the requirements of the future, new water treatment methods have become necessary. A constant rise in the interest in membrane technology expressed by the European paper industry confirms that in the future this ...

Nov. 13, 2010

By IWA Publishing

Recent operational experiences of FILMTEC™ NF270 membrane in Europe

Nanofiltration (NF) is an attractive technology for potable and industrial water treatment because NF operates between ultrafiltration (UF) and reverse osmosis (RO) membranes. NF is designed to remove a high percentage of organic contaminants (humic acids, pesticides, color bodies) while passing a medium to high percentage of salt. Compared to UF membranes, the NF product water quality is ...

Jan. 1, 2011

By IWA Publishing

Membrane fouling

The Problem: Membrane water treatment is costly and complex due to the systems required to mitigate membrane fouling. Membranes have, therefore, been relegated to high value applications such as desalination and ultra-pure water needs. The systems used to mitigate fouling have a history of underperformance and high cost. EconoPure Solution: EconoPure has ...

Jul. 17, 2012

By EconoPure Water Systems, LLC

Does Your Facility Need a Reverse Osmosis or Nanofiltration System?

Reverse osmosis (RO) and Nanofiltration (NF) are used across a wide variety of industrial applications for removal of dissolved materials from liquid streams. Implemented judiciously, RO and NF are effective strategies for recycling process liquids, reducing waste water, recovering and concentrating dissolved materials, and generating potable water. If your industrial facility requires removal of ...

May 22, 2017

By SAMCO Technologies, Inc.

Membrane filtration

Membrane is a thin layer of material that is capable of separating compounds as a function of physical and chemical properties when a driving force is applied across the membrane, which has been widely used in a wide range of applications in water industry [1]. Membrane can be classified by the range of compounds separated and the driving forces employed. For example, microfiltration (MF), ...

Jun. 27, 2011

By IWA Publishing

Explore the capabilities of nanofiltration and ultrafiltration. Filters have similar looks, different applications

Introduction Even if you’re an expert in reverse osmosis (RO) membrane technology, you may be overlooking some applications using often neglected cousins of RO: nanofiltration (NF) and ultrafiltration (UF). Although virtually identical in looks to RO membranes, NF and UF membranes serve distinctly different separation functions. Dramatic levels of resource recovery, efficiency ...

Jan. 1, 1998

By GE Water & Process Technologies

Using Nanofiltration in Beverage Production

The following article is based on a paper presented in August, 1990 at the 21st Annual Meeting of the Fine Particle Society in San Diego. Soft drink manufacturers, not to mention manufacturers of other beverage products, have always had a keen interest in the water that goes into their products. After all, it is the water that typically makes up 80%-90% of the product. In the past the water has ...

Jan. 1, 1991

By GE Water & Process Technologies

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