Abstract:
The present invention relates to a method for producing purified water comprising a step of passing water through a mixed bed ion exchanger comprising beads having a diameter of less than 0.5 mm, as well as to a module comprising an ultrafiltration means and a mixed bed ion exchanger as defined above and a water treatment system for producing ultrapure water comprising ultrafiltration means and a mixed bed ion exchanger as defined above, wherein the ultrafiltration means is located upstream of said mixed bed ion exchanger.
Abstract:
To provide a filter capable of efficiently removing metal ions in a treatment liquid, and capable of easily obtaining a solution having an extremely low metal ion content. A depth filter includes a porous molded article. The porous molded article is a sintered material of mixed powder or a swollen material of the sintered material. The mixed powder contains dried gel powder and thermoplastic resin powder. The dried gel powder contains an ion exchange resin including a sulfonic acid group, and a nitrogen-containing chelating resin.
Abstract:
Systems and methods are disclosed for controlling performance of a mixed ion exchange media comprising two or more media. The weighted average of a quantity of the first media having a first rate of exchange to a quantity of a second media having a second rate of exchange is determined based on predetermined requirements for the resulting mixed media. After determining the weighted average, the first and second media are mixed resulting in a mixed media having a third rate of exchange. The mixed media is introduced to an ion exchange column. Contaminated liquid is then introduced to the column creating a mass transfer zone within the column. The mixed media is generally considered optimized when it meets three conditions simultaneously: 100% safety limitation, 100% media capacity used, and effluent criteria are met.
Abstract:
An ion exchanger includes a sheet-shaped positive ion exchanger 2 in which binder particles 5 and positive ionic exchange resin particles 4 are mixed with each other, and a sheet-shaped porous negative ion exchanger 3 in which binder particles 7 and negative ionic exchange resin particles 6 are mixed with each other, the positive ion exchanger 2 and the negative ion exchanger 3 are bonded to each other to form an interface, and capacity of the negative ion exchanger 3 is greater than that of the positive ion exchanger 2. Therefore, the porous ion exchanger 1 is formed and absorbing ability of ion is increased, capacity of the negative ion exchanger 3 is made greater than that of the positive ion exchanger 2, regenerating ability of the ion exchanger with respect to absorbing ability of ion can be secured, and ion absorption and regeneration processing is carried out efficiently.
Abstract:
The present invention aims at limiting the pressure loss and smoothly discharging water treated by ion exchangers to the outside of the apparatus. Ion exchanging apparatus 1 has outer vessel 3 that has inner space 2; and ion exchanger support 4 that separates at least a part of inner space 2 into upper space 2a and lower space 2b and that can support ion exchangers to be loaded in upper space 2a. At least a part of an upper surface of the ion exchanger support is made from at least one screen which supports the ion exchangers and which has a flow path allowing water treated by the ion exchangers to flow into the lower space 2b.
Abstract:
A condensate demineralization method for a condensate treatment of a nuclear power generation plant, including: passing condensate at a linear flow rate ranging from 20 m/h to 200 m/h through a condensate demineralization apparatus comprising an ion exchange resin layer filled therein wherein the ion exchange resin layer includes a mixed bed of a strongly acidic cation resin and a strongly basic anion resin and a metal doped resin in a volume ratio ranging from 2% to 50% relative to the mixed bed.
Abstract:
The present invention provides novel methods of cell disruption and release of biomolecules from a cell. The invention comprises the use of positively and/or negatively charged microparticles comprising ground resin. It is particularly useful for purification of biomolecules from cell culture.