scale fouling Articles
-
Innovations in the inhibition and cleaning of reverse osmosis mebrane scaling and fouling - Case Study
Abstract: Scaling and fouling of membranes are an on-going performance issue for most plants This presentation outlines innovations in speciality chemicals designed to inhibit membrane scaling and fouling and to clean membranes where deposition has occurred. High phosphate waste water reuse RO plant – There is an increasing trend to treat recycled waste water and use it as a feed supply ...
-
Innovations in the inhibition of reverse osmosis membrane scaling and fouling
Abstract: Scaling and fouling of membranes is an on-going performance issue for most plants. There are continual improvements in membrane technology and plant design which increase efficiency, water quality and utilise different raw water supplies to produce clean pure water. This presentation outlines innovations in laboratory services and speciality chemicals designed to inhibit membrane ...
-
The economic pre-treatment of coal mine drainage water with caustic and ozone
Coal mine drainage waters are low in pH with varying amounts of iron and manganese and are generally brackish. The Austar Coal Mine in NSW, Australia, sought alternatives to their current lime dosing as the pre-treatment before the downstream reverse osmosis plant. Undesirable operating aspects of the current system include manganese and gypsum scaling/fouling, the need for anti-scalants and ...
-
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 ...
-
Sustainable groundwater management using reclaimed water: the Torreele/St-André case in Flanders, Belgium
The Torreele facility produces infiltration water for indirect potable re-use through artificial recharge of the dune aquifer of St-André. The secondary wastewater effluent is treated by ultrafiltration (UF), using the submerged ZeeWeed system, prior to reverse osmosis (RO), using brackish water low energy membranes. The Torreele experience showed that combining UF and RO enables the ...
-
Reusing water for industrial processes and irrigation in Saudi Arabia
Water is a scarce resource in Saudi Arabia and the public administration and private companies implement water reuse whenever possible. A reverse osmosis plant installed in the Eastern Province of Saudi Arabia helps to treat industrial waste water streams to quality levels that permit water reuse for industrial applications and irrigation. Kemira KemGuard antiscalant is used to prevent deposit ...
-
Analyses of calcium carbonate scale deposition on four RO membranes under a seawater desalination condition
Inorganic fouling is one of the critical operational issues in reverse osmosis membrane. Few researches investigated effects of membrane surface characteristics on inorganic fouling and on anti-scaling techniques although the fouling occurs on the membrane surface. The objective of this paper was to examine whether different characteristics of deposition of calcium carbonate solids would occur on ...
-
The innovative Osmotic Membrane Bioreactor (OMBR) for reuse of wastewater
An innovative osmotic membrane bioreactor (OMBR) is currently under development for the reclamation of wastewater, which combines activated sludge treatment and forward osmosis (FO) membrane separation with a RO post-treatment. The research focus is FO membrane fouling and performance using different activated sludge investigated both at laboratory scale (membrane area of 112 cm2) and at on-site ...
-
Results from 99 seawater ro membrane autopsies
Abstract This paper presents results from 99 sea water reverse osmosis (SWRO) membrane autopsies carried out by the Genesys laboratory in Madrid from 2002 and outlines the technical issues surrounding fouling and scaling of sea water membranes. The authors discuss historical results of membrane autopsies and link recent trends and changes in plant design to potential fouling and scaling issues ...
-
Importance of Pretreatment for Industrial Reverse Osmosis
Your body is a machine. Like most machines, you have to properly maintain your body in order for it to function properly. Along with regular cleaning and checkups, you also have to be cognizant of what food you put into your body or else it won’t work at its maximum potential. An industrial reverse osmosis water treatment system actually works in quite a similar way. Regular cleaning and ...
-
Maximizing membrane life: lessons learned from a three year study on performance recovery
Abstract Reverse Osmosis (RO) membranes are susceptible to several different types of foulants and scales. Common foulants observed in RO systems are organics, metals, clays and colloidal material. Common scales that are observed are carbonate, phosphate, sulfate and silica. Onsite cleaning is the norm to remove these foulants and scales but sometimes a desire for cleaning optimization or a ...
-
Evaluating impact of fouling on reverse osmosis membranes performance
Abstract Membrane fouling is commonly defined as an undesirable formation of deposits on mem- brane surfaces and it is considered a major problem in most brackish, seawater, and waste water reclamation applications. Depending on nature of the scale and foulant, fouling pro- cesses will lead to decreased membrane fluxes, increased pressures needs, and/or increased permeate conductivity. In some ...
-
Electronic Water Treatment Reduces Fouling In Reverse Osmosis
Reverse Osmosis (RO) is used in processes requiring high-quality, purified water, such in semi-conductor processing or biochemical applications and can be used to treat boiler feed water, industrial wastewater or process water. A water purification technique, it reduces the quantity of dissolved solids in solution. RO uses waterline pressure together with energy consuming pressurizing pumps that ...
-
Pros and Cons of Tertiary RO Waste Water Recycling for Municipal & Industrial Organizations
Tertiary RO waste water recycling has become a suitable solution to augment water supplies to combat water scarcity across the world. RO desalination in tertiary wastewater processes has proven to provide a cost efficient way to reuse water for both municipalities and industrial organizations. Experience has shown that tertiary RO waste water recycling with proper pretreatment in the primary and ...
-
RO brine treatment and recovery by biological activated carbon and capacitive deionization process
The generation of brine solutions from dense membrane (reverse osmosis, RO or nanofiltration, NF) water reclamation systems has been increasing worldwide, and the lack of cost effective disposal options is becoming a critical water resources management issue. In Singapore, NEWater is the product of a multiple barrier water reclamation process from secondary treated domestic effluent using ...
-
Reverse Osmosis Technology – KURIVERTER RC - Case Study
Summary Applications using Reverse Osmosis membrane technologies are everywhere in our lives – from tiny under counter units polishing our drinking water through industrial units preparing water for processes or purifying effluents for reuse and massive seawater desalination plants producing thousands of m³ of drinking and irrigation water every day. The membranes used in this ...
-
A Comprehensive Guide to Forward Osmosis
Forward osmosis (FO) is an innovative water treatment technology that uses a semipermeable membrane and natural osmotic pressure to separate pure water from contaminants and produce a clean water supply. ...
-
Problems of operation and main reasons for failure of membranes in tertiary treatment systems
Abstract This paper presents and discuss the results of the long term operation and monitoring of membrane fouling at several full-scale MF/RO water recycling facilities operated by Agbar in Spain. It was demonstrated that membranes are very reliable treatment enabling the production of high-grade recycled water, well disinfected and with the removal of all priority substances. The high organic ...
-
Study of fouling in two-stage reverse osmosis desalination unit operating without an inlet pH adjustment: diagnosis and implications
In the current work, the diagnosis of a reverse osmosis desalination unit is reported. Over the two last decades, the studied desalination unit was supplying a 1,200 bed hotel. The feed water was driven from a well near the sea. The desalination unit has two stages giving an average recovery equal to 81%. The behaviour of all water streams with respect to aggressiveness and scaling tendency ...
-
Culligan application brief food & beverage - a sustainable approach from Culligan Matrix Solutions
Challenge A major beverage plant was looking to reduce the impact of its operations on the environment while meeting the water treatment challenges at its facility. The sustainability goals of the facility included reducing water usage ond energy costs associated with its operations. Until recently, the facility was using city water in its utility process. The company was looking to use its own ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you