The data were compared with the efficiencies of the conventional unit processes for organics removal at Lever WTP. 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 … To this end, the resin was allowed to settle in a conical tube and was placed above a magnet to accelerate the settling. The applied MIEX doses were 2, 4, 8, and 15 mL/L. 0000000727 00000 n MIEX resin and its process were developed by the Australian company and research organizations Orica, Commonwealth Scientific Industrial Research Organization, and South Australian Water Corporation. Of these, only three are operating in Australia: at Mount Pleasant in South Australia, Wanneroo in Western Australia and Airey’s Inlet, Victoria. The next step up was 200 litre: the first two batches were quite poor, with small particle size, and poor magnetic oxide incorporation. To make it suitable for drinking, water must be treated so that the suspended matter is removed by flocculation using alum or iron salts and any pathogens killed by disinfection with chlorine or ozone. [Source: CSIRO], CSIRO’s 200 litre, 2 storey tall, Process Bay reactor. The persistence of these pharmaceuticals and inefficient removal by water treatment lead to accumulation in surface water and effluents with negative effects for aquatic life and human health. In: 2nd European Conference on filtration and separation, Compeigne, France, 12 October 2006. The resin was then patented, and in later years several variants and processes using it were also patented. The MIEX process is a novel ion exchange approach specifically developed for the removal of the dissolved organic content (DOC) from water. A novel magnetic ion exchange resin called MIEX Resin is being utilized in potable water treatment, which indicates significant advantages. MIEX Resin Treatment Alum Coagulation Clarification Raw Water Filtration Product Water Pre-chlorine Alum Figure 4: Wanneroo GWTP Process, including MIEX® Plant The results from Trial 2 showed that greater than 75% DOC and 90% NSRS removal could be consistently achieved when the resin process was used in conjunction with conventional or Placement of MIEX® Resin Technology in the Treatment Train The MIEX® resin technology was tested using raw water as the first step in the overall water treatment process. 0000001949 00000 n 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. Note the narrow piping. 0000003947 00000 n Two bed volumes of the solution were added into a conical tube with the exhausted resins and stirred for 30, 60, 90 and 120 min. it is a batch, not a continuous process, and so harder to monitor and control. Keywords: MIEX®DOC; Ultrafiltration; Natural organic matter; Integrated process 1. 1. 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. Therefore, MIEX resin is a promising technology for the removal of chlorite from aqueous solution. Afterwards supernatant was decanted into a stirred magnetically cell for the subsequent UF treatment. The next step was the process bay, CSIRO’s chemical pilot plant. Aug 1st, 2002 0000037228 00000 n The removal of chloride on MIEX resin is an ion-exchange mechanism. Dissolved organic carbon organic carbon Subject Category: Miscellaneous see more details can be removed effectively as well as chlorite and chlorate using MIEX resin in real water. MIEX® DOC resin is NSF 61 Certified for use in drinking water processes. We used a unique magnetite media (magnetic) filter to capture resin fines from the MIEX process. In the 1980s Prof Don Bursill of South Australia Water demonstrated that if DOC, which is a significant problem for Adelaide, could be removed from raw waters before treatment, there were considerable reductions in both alum and chlorine usage. Article MIEX Resin Water Treatment Process. 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 MIEX® resin process uses mixed tanks for contacting resin with water. The development of the MIEX® resin and water treatment process is well documented as a team effort between the Commonwealth Scientific and Industrial Research Organisation (CSIRO) who developed the resin, South Australian Water Corporation who developed the water treatment application and ICI Australia (later to become Orica after divestment by ICI PLC) who commercialized the technology. The MIEX® Treatment Process The MIEX® Treatment Process is an advanced ion exchange process that uses MIEX® Resin to remove target contaminants from water and wastewater streams. %PDF-1.3 %���� CSIRO then went to a local manufacturer – Yorkshire – who made the pre-mix in their larger scale lab equipment. [Source: Orica], The MIEX section of the Mt Pleasant plant. The most common application of IX is softening, but there are many kinds of resin, and anion IX resins can be used for the removal of anions like nitrate, DOC, and arsenate. 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