CN2280095Y

CN2280095Y - Electric de-ionized water purification apparatus

Info

Publication number: CN2280095Y
Application number: CN 96244874
Authority: CN
Inventors: 王方
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 1996-11-29
Filing date: 1996-11-29
Publication date: 1998-04-29
Anticipated expiration: 2006-11-29

Abstract

The utility model relates to an electric de-ionized water purification apparatus. The utility model relates to a water purification apparatus which combines electrodialysis with ion exchange technology. The utility model is characterized in that knitting made of anion and cation exchange fibres is filled in a fresh water chamber of a common electric dialyzator; the utility model not only overcomes a polarization phenomenon in an electrodialysis process, but also avoids the defect that ion exchanger can only be regenerated through chemical agent; therefore, the utility model has the advantages of continuous operation, self-actuated regeneration of exchanger, convenient operation management, little possibility of environmental pollution, etc. of a common electric dialyzator of a filling bed; as the anion and cation exchange fibres are used as filler, the utility model has the advantages that the anion and cation exchange fibres are conveniently and uniformly filled, water seepage is not generated, purified water flows fast, etc.; the utility model can be widely used in a system of a thermal power plant, an electronics industry and other industries in producing pure water and ultra-pure water.

Description

The electric deionization pure water device

The utility model relates to a kind of equipment of making pure water, relates in particular to a kind of packed-bed electrodialysis technology and equipment.

The system pure water equipment is to carry out requisite visual plant in the water treatment procedure in the industry such as fuel-burning power plant and electronics.General mixed bed of ion-exchange and the electrodialysis desalinations of adopting in the prior art more.In recent years, people combine electrodialytic membranes technology and ion exchange technique dexterously, have created a kind of novel water treatment method, are referred to as electro-deionisation (electrodeionization is called for short EDI), the domestic packed-bed electrodialysis desalination process that is referred to as.It has overcome the polarization phenomena of electrodialysis process, also overcome ion-exchanger and must use chemical agent regenerated defective, because this equipment has and can move continuously, exchanger has regeneration voluntarily, without soda acid, and non-wastewater discharge, the product quality is good, series of advantages such as operational management is convenient, and cost is low make it become the most rising current water supply desalter.

1987, U.S. Millipore company released first commercial electric deion equipment, and external many power plant adopt, and domesticly also once developed this kind equipment in the 70-80 age, but the commercialization of being unrealized for various reasons.In these equipment, its weighting material ion-exchanger mostly adopts spherical resin, because resin diameter 0.7mm only is difficult to be filled in the wide freshwater room of 1-2mm, so leak easily.For quickening exchange and filling conveniently, also once used ion conversion fiber in the prior art, being about to two kinds of cotton-shaped ion-exchange fibers of yin, yang is layered in the freshwater room, it found that two kinds of flosss are difficult to the shop evenly, and they are easy to take place wrinkling and conglomeration under water impact, thereby influence its exchange effect and increase the water purifying resistance to flow.

For overcoming the deficiencies in the prior art and defective, the purpose of this utility model provides a kind of new electric deionization pure water device, makes its series of advantages that not only has filling bed electrodialyzer and had, and has and fill evenly, characteristics such as conveniently, water-tight and water purification flow velocity is fast.

The utility model is achieved through the following technical solutions: it mainly comprises membrane stack, electrode device and gripping unit three parts, membrane stack is alternately to be arranged by dense, diluted gasket and yin, yang ion-exchange membrane to form, the ion-exchange weighting material is housed in freshwater room, it is characterized in that the ion-exchange weighting material is to be formed by the braiding of yin, yang ion-exchange fiber.

Accompanying drawing 1 is the structural representation of electrodialyzer.

Accompanying drawing 2 is the synoptic diagram of filling the ion-exchange fiber cloth in the freshwater room of membrane stack elementary cell.

Accompanying drawing 3 is one of embodiment of ion-exchange fiber cloth.

Describe preferred forms of the present utility model and embodiment in detail below in conjunction with accompanying drawing.

The utility model adopts the ion-exchanger of novel texture to make as weighting material on the basis of common filling bed electrodialyzer, promptly fills yin, yang ion-exchange fiber cloth in freshwater room.Electrodialyzer is mainly by membrane stack 5, and electrode device 6 and gripping unit 7 three parts constitute.Membrane stack is alternately to be arranged by dense, diluted gasket and yin, yang ion-exchange membrane to form.It is right that the elementary cell of membrane stack is called film, it by cavity block 1, diluted gasket 3, anode membrane 2, dense water dividing plate 4 each one form, membrane stack promptly by some films to combining.In each freshwater room ion-exchanger is housed, this exchanger adopts yin, yang ion-exchange fiber cloth 8.Its cloth is to form with yin, yang fiber blend informant worker braiding, or forms with cloudy single and the artificial braiding of positive single.The diameter of its single is generally 0.5mm, can determine their ratio during braiding according to the principle that two kinds of fiber exchange capacities of yin, yang equate.During filling, useful binders or organic solvent connect on diluted gasket.

The utility model compared with prior art, the energy that general filling bed electrodialyzer has is continuous except having Operation, exchanger can be regenerated voluntarily, without soda acid, non-wastewater discharge, non-environmental-pollution, operational management side Just wait outside the series of advantages and since adopted this filler of yin, yang ion conversion fibrous braid as from Sub-exchanger, thus have fill evenly, convenient, the characteristics such as water-tight and water purification flow velocity is fast. Can extensively use In the industrial producing pure water such as thermal power plant and electronics and ultra-pure water system.

Claims

1, a kind of electric deionization pure water device, it mainly comprises membrane stack, electrode device and gripping unit three parts constitute, membrane stack is by anode membrane [2], cavity block [1], dense, diluted gasket and the ion-exchange weighting material [8] that is contained in the freshwater room constitute, and it is characterized in that the ion-exchange weighting material is to adopt yin, yang ion-exchange fiber cloth.

2,, it is characterized in that above-mentioned yin, yang ion-exchange fiber cloth can adopt yin, yang fiber blend informant worker's braiding structure or with cloudy single and the artificial braiding structure of positive single according to the described electric deionization pure water device of claim 1.