CN103112979A - Ultrapure water treatment technology - Google Patents
Ultrapure water treatment technology Download PDFInfo
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- CN103112979A CN103112979A CN2013100881813A CN201310088181A CN103112979A CN 103112979 A CN103112979 A CN 103112979A CN 2013100881813 A CN2013100881813 A CN 2013100881813A CN 201310088181 A CN201310088181 A CN 201310088181A CN 103112979 A CN103112979 A CN 103112979A
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- ultrapure water
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Abstract
The invention relates to an ultrapure water treatment technology. According to the ultrapure water treatment technology, inflow water is pretreated, then is sequentially treated through a secondary RO (Reverse Osmosis) system, an EDI (Electrodeionization) device and a polishing mixed bed and finally is discharged. The ultrapure water treatment technology is simple in technological processes and reasonable and effective in configuration and has high treatment efficiency; for example, after the inflow water with water quality of running water is treated according to the ultrapure water treatment technology, the electrical resistivity of the effluent quality of the inflow water can be higher than or equal to 17.5M Omega cm; and therefore, the ultrapure water treatment technology has the advantages of being economic and environment-friendly.
Description
Technical field
The present invention relates to water treatment field, particularly a kind of ultrapure water treatment process.
Background technology
Ultrapure water, it is the general very inaccessible degree for the treatment of of Pure water preparation equipment, usually adopt pre-treatment, reverse osmosis technology, ultrapure water treatment facility and rear class to process four large steps, cascade filtration, high-performance ion-exchange (polishing), ultra filtration filter, ultraviolet lamp, except multiple treatment processs such as TOC devices, resistivity can reach 18.25M Ω * cm.
The technical process of ultrapure water treatment facility roughly is divided into following several:
1, adopt ion exchange resin to prepare traditional water treatment mode of ultrapure water, its typical process flow is: former water → husky carbon filter → accurate filter → cation bed → anion bed → mixed bed (multiple bed) → pure water tank → pure water pump → rearmounted accurate filter → use water spot
2, the mode that adopts reverse osmosis water treating equipment and ion-exchange unit to make up, its typical process flow is: former water → husky carbon filter → accurate filter → reverse osmosis equipment → pure water tank → mixed bed (multiple) → ultrapure water tank → ultrapure water pump → rearmounted accurate filter → use water spot
Below the relative merits of ultrapure water treatment facility technique are listed in respectively:
1, the first adopts its advantage of ion exchange resin to be that initial cost is few, and the place that takies is few, but shortcoming needs often to carry out ion regeneration exactly, expends a large amount of soda acids, and environment is had certain destructiveness.
2, the second adopts reverse osmosis to mix ion-exchange unit as pre-treatment again, its characteristics are just to throw time ratio to adopt the ion exchange resin mode high, but the ion device regeneration period will be grown relatively, and the soda acid that expends lacks a lot than the simple mode of ion exchange resin that adopts.But environment still there is certain destructiveness.
Summary of the invention
The present invention provides a kind of simple and practical flow, the good ultrapure water treatment process for the treatment of effect in order to overcome the deficiency of above technology, and the advantage of economic environmental protection.
The present invention is achieved through the following technical solutions:
A kind of ultrapure water treatment process, water inlet pass through water outlet after pre-treatment, secondary RO system, EDI device and polishing mixed bed successively.
Preferably, described secondary RO system comprises systems pumps, reverse osmosis unit, washing unit and intermediate water tank, and wherein, described reverse osmosis unit comprises reverse osmosis membrane and putamina, frame, electric control box.
Preferably, include by cavity block, anode membrane and dividing plate in described EDI device and organize the alternative arrangement electrodialyzer more.
The invention has the beneficial effects as follows: ultrapure water processing technological flow of the present invention is simple, configuration is reasonable effectively, processing efficiency is high, and for example with the water inlet of tap water quality, its effluent quality target resistance rate can extremely 〉=17.5M Ω cm.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, below preferred embodiment of the present invention and coordinate accompanying drawing to be described in detail as follows.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the schematic flow sheet of ultrapure water treatment process of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is made specific description.
In conjunction with shown in Figure 1, a kind of ultrapure water treatment process of the present invention, water outlet after pre-treatment, secondary RO system, EDI device, polishing mixed bed is passed through in water inlet successively.
The setting of pretreatment system, purpose are to improve water supply conditions, make it to reach the water inlet requirement of reverse osmosis system, thus protection reverse osmosis main frame, and the work-ing life of prolongation film.In water treatment system.Usually need to carry out the pre-treatment design for different water quality, modal is that more medium filter (the filtering diameter is greater than the suspended particle of 10um)+activated carbon (removing peculiar smell in water, chlorine residue, heavy metal ion, organic carcinogen etc.)+Scale inhibitors chemicals dosing plant (or softening installation) (greatly reduce in system, the scale forming matter such as calcium, magnesium forms dirt)+accurate filter (filtering accuracy is 5um, further removes particulate matter residual in water) forms pretreatment system.
Secondary R0 system is namely reverse osmosis system, comprises systems pumps, reverse osmosis unit, washing unit and intermediate water tank, and wherein, described reverse osmosis unit comprises reverse osmosis membrane and putamina, frame, electric control box.Its basic functional principle is: use special high-pressure hydraulic pump, Jiang Yuanshui adds to 6-20 kilogram pressure, makes former water penetrate the aperture under the effect of pressure and only has the reverse osmosis membrane of 0.0001 micron.Chemical ion and bacterium, fungi, virosome can not be passed through, and discharge with waste water, only allow volume less than the water molecules of 0.0001 micron and pass through.
The EDI device is namely a kind of pure water manufacturing technology that ion exchange technique, ion-exchange membrane technique and ion-conductance migrating technology are combined.Electrodialysis and ion exchange technique are combined, utilize the two end electrodes high pressure to make that in water, charged ion moves, and coordinate ion exchange resin and selective resin film to move removal with speeding-up ion, thereby reach the purpose of desalt.Electrodeionization (EDI) system is mainly under the effect of DC electric field, by dielectric medium ion generation displacement in the water of dividing plate, utilizes exchange membrane that the selection of ion is seen through and is used for the water technology of a kind of science that water quality is purified.Between the pair of electrodes of electrodialyzer, usually by cavity block, the many groups of anode membrane and dividing plate (first, second) alternative arrangement consists of dense chamber and light chamber (be that positively charged ion can see through anode membrane, negatively charged ion can see through cavity block).In the water of light chamber, positively charged ion sees through anode membrane to the negative pole migration, is held back by the cavity block in dense chamber; In water, negatively charged ion is to positive extreme direction migration cavity block, held back by the anode membrane in dense chamber, water intermediate ion number by light chamber reduces gradually like this, become fresh water, and in the water of dense chamber, because the zwitterion of dense chamber is constantly poured into, the dielectric medium ionic concn constantly raises, and become dense water, thereby reach desalination, purification, concentrated or refining purpose.
Through practice, for example with the water inlet of tap water quality, its effluent quality target resistance rate can extremely 〉=17.5M Ω cm.
Above-described embodiment just is to allow the one of ordinary skilled in the art can understand content of the present invention and implement according to this for technical conceive of the present invention and characteristics being described, its objective is, can not limit protection scope of the present invention with this.Variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (5)
1. a ultrapure water treatment process, is characterized in that, water outlet after pre-treatment, secondary RO system, EDI device and polishing mixed bed is passed through in water inlet successively.
2. ultrapure water treatment process according to claim 1, is characterized in that, described secondary RO system comprises systems pumps, reverse osmosis unit, washing unit and intermediate water tank.
3. ultrapure water treatment process according to claim 2, is characterized in that, described reverse osmosis unit comprises reverse osmosis membrane and putamina, frame, electric control box.
4. ultrapure water treatment process according to claim 1, is characterized in that, includes by cavity block, anode membrane and dividing plate in described EDI device and organize the alternative arrangement electrodialyzer more.
5. ultrapure water treatment process according to claim 1, is characterized in that, with the water inlet of tap water quality, the resistivity in its effluent quality index can reach 〉=17.5M Ω cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100881813A CN103112979A (en) | 2013-03-20 | 2013-03-20 | Ultrapure water treatment technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100881813A CN103112979A (en) | 2013-03-20 | 2013-03-20 | Ultrapure water treatment technology |
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| CN103112979A true CN103112979A (en) | 2013-05-22 |
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| CN2013100881813A Pending CN103112979A (en) | 2013-03-20 | 2013-03-20 | Ultrapure water treatment technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933860A (en) * | 2014-04-24 | 2014-07-23 | 南京集鸿环保科技有限公司 | Preparation system of car urea |
| CN105198133A (en) * | 2015-09-23 | 2015-12-30 | 浙江工商大学 | Ultra-pure water preparation system and method capable of preventing electrodeionization device from scaling |
| CN109736062A (en) * | 2019-03-22 | 2019-05-10 | 石学兵 | A kind of method of dustless cleaning |
| CN111511689A (en) * | 2017-12-21 | 2020-08-07 | 百事可乐公司 | Water filtration system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648074U (en) * | 2010-02-01 | 2010-11-24 | 无锡市双净净化设备有限公司 | Direct in-series installation system of EDI set and polishing mixed bed |
| CN202022812U (en) * | 2011-03-04 | 2011-11-02 | 深圳市和科达水处理设备有限公司 | Ultrapure water preparation system |
-
2013
- 2013-03-20 CN CN2013100881813A patent/CN103112979A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201648074U (en) * | 2010-02-01 | 2010-11-24 | 无锡市双净净化设备有限公司 | Direct in-series installation system of EDI set and polishing mixed bed |
| CN202022812U (en) * | 2011-03-04 | 2011-11-02 | 深圳市和科达水处理设备有限公司 | Ultrapure water preparation system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933860A (en) * | 2014-04-24 | 2014-07-23 | 南京集鸿环保科技有限公司 | Preparation system of car urea |
| CN103933860B (en) * | 2014-04-24 | 2016-08-24 | 南京集鸿环保科技有限公司 | A kind of preparation system of urea for vehicle |
| CN105198133A (en) * | 2015-09-23 | 2015-12-30 | 浙江工商大学 | Ultra-pure water preparation system and method capable of preventing electrodeionization device from scaling |
| CN111511689A (en) * | 2017-12-21 | 2020-08-07 | 百事可乐公司 | Water filtration system |
| CN109736062A (en) * | 2019-03-22 | 2019-05-10 | 石学兵 | A kind of method of dustless cleaning |
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Application publication date: 20130522 |