The process is a pre-treatment incorporating MIEX® DOC resin for the removal of DOC. It usually contains several impurities: suspended solid matter, such as dirt, leaves and so on; waterborne diseases such as Escherichia coli, giardia or worse; and dissolved organic carbon (DOC), also known as natural organic matter (NOM) and as ‘Colour’. Ixom Watercare and two leading Australian research organizations (Commonwealth Scientific Industrial Research Organization and South Australian Water Corporation) worked together to develop a unique ion exchange process for the removal of DOC from potable water … the resin can be used in a stirred tank instead of a column, because the particles are dense and will stick magnetically to each other when stirring stops, they form large clumps that settle rapidly. to treat the highly coloured Cape waters of South Africa. The MIEX® advanced process, systems and resins were developed over an extended period stretching back to the mid 1980s. [external links]. DOC itself is harmless, but it can interfere in these treatment processes. MIEX is an innovative ion exchange resin that cost-effectively removes dissolved organic carbon (DOC), a precursor to disinfection by-products (DBPs) in drinking water. [Source: CSIRO], Process diagram of a MIEX water treatment plant. At the chosen doses of treatment materials, bulk NOM removal remained the same (< 10% difference in dissolved organic carbon after treatment with activated carbon versus MIEX); compared with the powdered activated carbon, however, MIEX … To this end, the resin was allowed to settle in a conical tube and was placed above a magnet to accelerate the settling. [Source: Orica], The MIEX section of the Mt Pleasant plant. This plant has been configured so that a combined MIEX-coagulation (MIEX-C) process can be operated in parallel with a conventional enhanced … MICo® applications include water softening, taste and odor, and color correction, and removal of arsenic, nitrate, bromide, ammonia, and organic matter, such as DOC. This was a small plant designed to test MIEX® and other new technologies. Additional modules can easily be added to increase the resin regeneration capacity to accommodate plant expansions. Ion-exchange resins are widely used in different separation, purification, and decontamination processes.The most common examples are water softening and water purification.In many cases ion-exchange resins were introduced in such processes as a more flexible alternative to the use of natural or artificial zeolites.Also, ion-exchange resins are highly effective in the biodiesel filtration process. While GMA is not stable to strong acids and bases, it does have the advantage that many different functional groups could be attached through the reactive epoxy ring. In 1965 Don Weiss and others at CSIRO became interested in the application of this concept to desalination, and developed a resin and a process called SIROTHERM®. Ballard MJ, 2011, Personal communication. The surface water became less humic after MIEX treatment, as demonstrated by the decrease in A/T ratio compared to the raw surface water, but then humic content increased with continuous resin use. What makes MIEX unique is a magnetic component that allows the resin to be used in a continuous … Unfortunately, both surface and bore water in Australia often have high levels of DOC. A full-scale (110 ML/d) potable water treatment plant (WTP) based on the MIEX process, an innovative new process based on a strong base anion-exchange resin with magnetic properties, has been operating in Perth Western Australia since 2001. Note the narrow piping. In addition, it can promote bacterial re-growth in pipes by acting as a ‘food’. The 99.9% recovery figure is based on the resin mass leaving the MIEX process in the treated water stream. Kelly: For more than ten years now, Oracle Watercare's been at the forefront of advanced ion exchange for water treatment, especially in the municipal market. Central to the system is a micro, strong base, magnetic ion exchange resin, which was specially developed and optimised for DOC removal. MIEX® resin regeneration equipment is supplied as modular, skid-mounted systems. For instance, MICo® SOF is an advanced fluidized bed ion exchange treatment process that can achieve softening, DOC and bromide … The resin consisted of crosslinked polyvinyl alcohol beads, sometimes grafted with acrylates, containing magnetic oxides. This is a relatively common process used in drinking water treatment for the removal of natural organic matter. Methods: In this study, the uptake of estradiol by a combined magnetic ion exchange resin - ultrafiltration process (MIEX-UF) was investigated. Raw water from the inlet main enters at the bottom of the contactor and comes into contact with the MIEX Resin. 0000001218 00000 n The resin has a magnetised component which allows the particles to act as weak magnets, giving them unique settling and other handling characteristics. MIEX® Resin The name MIEX® … He realised that this was not possible using conventional ion exchange due to a ‘Catch-22′ situation: the water had to be treated before it could be put through ion-exchange columns, but it needed to have the DOC removed before it was treated. The MIEX® Treatment Process is an advanced ion exchange process that uses MIEX® Resin to remove target contaminants from water and wastewater streams. A full-scale (110 ML/d) potable water treatment plant (WTP) based on the MIEX process, an innovative new process based on a strong base anion-exchange resin with magnetic properties, has been operating in Perth Western Australia since 2001. The resin is a strong base anion exchange developed with improvements resulting in high affinity for the removal of dissolved organic carbon (DOC). 80 0 obj << /Linearized 1 /O 82 /H [ 814 404 ] /L 889699 /E 89309 /N 10 /T 887981 >> endobj xref 80 19 0000000016 00000 n The MICo® process and MIEX® Plus resin blend that Ixom recommends will depend on your unique treatment needs. The 99.9% recovery figure is based on the resin mass leaving the MIEX process in the treated water stream. In conventional ion exchange the plastic beads are packed into a large steel or plastic column and impure water forced through under pressure to produce water of higher quality. The MIEX process is a novel ion exchange approach specifically developed for the removal of the dissolved organic content (DOC) from water. Afterwards supernatant was decanted into a stirred magnetically cell for the subsequent UF treatment. It is a continuous ion exchange process performed in tanks, which is maintained in a steady state by the withdrawal and regeneration of loaded resin, and the return of this resin to the process. 0000001531 00000 n He then had the insight that a resin like the ICI/CSIRO SIROTHERM® might be able to do the job because it did not require the use of packed columns. There are now 37 MIEX® systems operating internationally and a further 8 under construction, at present treating close to 500 megalitres per day of capacity, and an estimated additional 300 megalitres was installed during 2009. Ion-exchange resins are widely used in different separation, purification, and decontamination processes.The most common examples are water softening and water purification.In many cases ion-exchange resins were introduced in such processes as a more flexible alternative to the use of natural or artificial zeolites.Also, ion-exchange resins are highly effective in the biodiesel filtration process. The process makes water cleaner and safer at a lower cost than previous methods and in less time. DOC removal efficiency at Lever WTP depends largely on the raw water quality and ranges from 28 % for water of moderated quality to 89 % of significantly deteriorated quality. CSIRO then went to a local manufacturer – Yorkshire – who made the pre-mix in their larger scale lab equipment. To make it suitable for drinking, water must be treated so that the suspended matter is removed, and any pathogens killed by disinfection with chlorine or ozone. 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