CN113233650A - Method and device for preparing purified water from steam condensate - Google Patents
Method and device for preparing purified water from steam condensate Download PDFInfo
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- CN113233650A CN113233650A CN202110592646.3A CN202110592646A CN113233650A CN 113233650 A CN113233650 A CN 113233650A CN 202110592646 A CN202110592646 A CN 202110592646A CN 113233650 A CN113233650 A CN 113233650A
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- water
- steam condensate
- condensate water
- condensate
- steam
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 239000008213 purified water Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 9
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 150000001412 amines Chemical class 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- 229910021642 ultra pure water Inorganic materials 0.000 claims abstract description 4
- 239000012498 ultrapure water Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 6
- 238000005342 ion exchange Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims description 3
- 239000008399 tap water Substances 0.000 abstract description 8
- 235000020679 tap water Nutrition 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000012528 membrane Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002455 scale inhibitor Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/427—Treatment of water, waste water, or sewage by ion-exchange using mixed beds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a method and a device for preparing purified water by steam condensate water. The method comprises the following steps: cooling the steam condensate to normal temperature; filtering the cooled steam condensate water to remove particle impurities in the water; adsorbing the filtered steam condensate water to adsorb organic matters in the water and reduce TOC in the water; carrying out plasma exchange on the filtered and adsorbed steam condensate water and anion-cation mixed resin, and removing trace amine alkaline substances contained in the steam condensate water; and sending the steam condensate water subjected to the plasma exchange into a reverse osmosis system for reverse osmosis treatment, so as to reduce the conductivity of the steam cold water and finally obtain ultrapure water. The invention reduces the consumption of tap water and the maintenance cost, and simultaneously reduces the damage and pollution to the environment.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a method and a device for preparing purified water by steam condensate water.
Background
In the prior art, tap water is usually used to produce purified water. Filtering and adsorbing to remove particles in water, and preparing the pure water by a two-stage reverse osmosis method. The method consumes a large amount of tap water in production, and the reverse osmosis membrane pores are easy to block with the passage of time, so that the production is reduced. The scale inhibitor and sodium hydroxide added in the water production process can damage the environment to a certain extent. Therefore, how to reduce the consumption of tap water, maintenance cost and damage to the environment is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the consumption of a large amount of tap water, the loss of equipment and the damage to the environment in the prior art.
In order to solve the technical problem, the invention provides a method for preparing purified water by steam condensate water, which comprises the following steps:
s1, cooling the steam condensate to normal temperature;
s2, filtering the cooled steam condensate water to remove particle impurities in the water;
s3, adsorbing the filtered steam condensate water to adsorb organic matters in the water and reduce the TOC in the water;
s4, performing plasma exchange on the filtered and adsorbed steam condensate water and anion-cation mixed resin, and removing trace amine alkaline substances contained in the steam condensate water;
and S5, sending the steam condensate water after plasma exchange into a reverse osmosis system for reverse osmosis treatment, reducing the conductivity of the steam condensate water, and finally obtaining ultrapure water.
In one embodiment of the present invention, the temperature of the steam condensate before cooling is 95 ° in step S1.
Further, in step S1, the normal temperature is 10 ° to 35 °.
Further, in step S3, the particle size of the particulate impurities is 20 μm or more.
Further, in step S4, the anion-cation mixed resin is regenerated using a softening salt.
The invention also provides another technical scheme: the device for preparing purified water from the steam condensate water comprises a condensate water tank for containing the steam condensate water, a heat exchanger for cooling the water to normal temperature, a water pump for conveying the condensate water from the condensate water tank to the heat exchanger, a filter for filtering the cooled condensate water, an activated carbon adsorption device for performing physical adsorption on the filtered condensate water, an ion exchange column for performing plasma exchange on the adsorbed condensate water, and a reverse osmosis system for performing reverse osmosis treatment on the condensate water after the plasma exchange.
Further, the heat exchanger is a plate heat exchanger.
Further, the water pump is a hot water pump.
Further, the filter is a precision filter.
Furthermore, the filtration pore size of the precision filter is 5-10 microns.
1) The method and the device for preparing purified water by using the steam condensate disclosed by the invention do not consume tap water, and use a large amount of steam condensate discharged in oxygen water production as a raw material, so that the manufacturing cost is reduced.
2) According to the method and the device for preparing purified water by using the steam condensate water, disclosed by the invention, the water quality index of the used steam condensate water is far higher than that of tap water, the service life of a reverse osmosis membrane is prolonged, the purified water standard can be reached only by a primary reverse osmosis system, and the investment cost and the equipment maintenance cost of equipment are greatly reduced.
3) The method and the device for preparing purified water by steam condensate disclosed by the invention do not use scale inhibitors and sodium hydroxide solution in the original process, only consume a small amount of softened salt, and reduce the damage and pollution to the environment in the production process.
Drawings
In order that the manner in which the present invention is made will be more readily understood, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings,
FIG. 1 is a flow diagram of a process for producing purified water from steam condensate;
fig. 2 is a structural view of an apparatus for preparing purified water from steam condensate.
The specification reference numbers indicate: 1. a condensate water tank; 2. a heat exchanger; 3. a water pump; 4. a filter; 5. an activated carbon adsorption unit; 6. an ion exchange column; 7. a reverse osmosis system; 8. a raw water tank; 9. a purified water tank.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further improvements to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure. In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.
Referring to fig. 1 and 2, as shown in the drawings, a method of preparing purified water from steam condensate includes the steps of:
s1, cooling the steam condensate to normal temperature;
s2, filtering the cooled steam condensate water to remove particle impurities in the water;
s3, adsorbing the filtered steam condensate water to adsorb organic matters in the water and reduce the TOC in the water;
s4, performing plasma exchange on the filtered and adsorbed steam condensate water and anion-cation mixed resin, and removing trace amine alkaline substances contained in the steam condensate water;
and S5, sending the steam condensate water after plasma exchange into a reverse osmosis system for reverse osmosis treatment, reducing the conductivity of the steam cold water, and finally obtaining the ultrapure water.
In the above, the anion and cation mixed resin is anion and cation mixed ion resin, the self-produced steam condensate water is used as the production raw material, the water quality index of the steam condensate water is far higher than that of tap water, the service life of the reverse osmosis membrane is prolonged, the purified water standard can be reached only by a first-stage reverse osmosis system, the raw material cost is saved, and the investment cost and the equipment maintenance cost of equipment are greatly reduced; the scale inhibitor and the sodium hydroxide solution in the prior art are not used, only a small amount of softened salt is consumed, and the damage and pollution to the environment in the production process are reduced.
In a preferred embodiment of this embodiment, in step S1, the temperature of the steam condensate before cooling is 95 °.
In a preferred embodiment of this embodiment, in step S1, the normal temperature is 10 ° to 35 °. For example 10 ° or 15 ° or 20 ° or 25 ° or 30 ° or 35 °. The specific temperature is further determined during actual operation.
In a preferred embodiment of this embodiment, in step S3, the particle size of the particulate impurities is 20 μm or more.
In a preferred embodiment of this embodiment, in step S4, the cation-anion hybrid resin is regenerated using a softening salt.
In the above, when the resin adsorbs enough calcium and magnesium ions, the resin will reach a saturated state, which means that the resin needs to be regenerated and replaced by soft water salt, so that the resin saturated with adsorbed calcium and magnesium ions is restored to the state before the resin, and thus the resin can be used repeatedly through the principle of regeneration and replacement, thereby reducing the damage to the environment and saving the cost.
The following apparatus for implementing the method for preparing purified water from steam condensate as above includes a condensate water tank 1 for containing steam condensate water, a heat exchanger 2 for cooling the water to normal temperature, a water pump 3 for delivering the condensate water from the condensate water tank to the heat exchanger, a filter 4 for filtering the cooled condensate water, an activated carbon adsorption device 5 for performing physical adsorption treatment on the filtered condensate water, an ion exchange column 6 for performing plasma exchange on the adsorbed condensate water, a reverse osmosis system 7 for performing reverse osmosis treatment on the plasma exchanged condensate water, a raw water tank 8 for storing the filtered condensate water, and a purified water tank 9 for receiving the reverse osmosis treated condensate water.
In a preferred embodiment of the present embodiment, the heat exchanger 2 is a plate heat exchanger.
In the above, the plate heat exchanger has a compact structure, can well bear high pressure and high temperature, and has extremely high safety and strong adaptability: the size of the heat transfer area can be changed according to the number of the plates, and the heat transfer area is suitable for heating or cooling among various fluids.
In a preferred embodiment of the present embodiment, the water pump 3 is a hot water pump.
In the above, the hot water pump has a high temperature resistance characteristic, can bear the high temperature of the steam condensate water, and can complete the transportation of the steam condensate water.
In a preferred embodiment of the present embodiment, the filter 4 is a precision filter.
In the above, precision filter's filter fineness is high, and filtering resistance is little, cuts dirty ability reinforce and long service life, can practice thrift equipment cost.
In a preferred embodiment of this embodiment, the fine filter has a filter pore size of 5 to 10 μm. For example, 5 microns or 10 microns, how large the microfilter is actually used needs to be determined by the particle size of the particulate impurities.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A method for preparing purified water by steam condensate water is characterized by comprising the following steps:
s1, cooling the steam condensate to normal temperature;
s2, filtering the cooled steam condensate water to remove particle impurities in the water;
s3, adsorbing the filtered steam condensate water to adsorb organic matters in the water and reduce the TOC in the water;
s4, performing plasma exchange on the filtered and adsorbed steam condensate water and anion-cation mixed resin, and removing trace amine alkaline substances contained in the steam condensate water;
and S5, sending the steam condensate water after plasma exchange into a reverse osmosis system for reverse osmosis treatment, reducing the conductivity of the steam condensate water, and finally obtaining ultrapure water.
2. The method for preparing purified water from steam condensate according to claim 1, wherein the temperature of the steam condensate before cooling in step S1 is 95 °.
3. The method for preparing purified water from steam condensate as claimed in claim 1, wherein the normal temperature is 10 ° to 35 ° in step S1.
4. The method for preparing purified water from steam condensate according to claim 1, wherein in step S3, the particle size of the particulate impurities is 20 μm or more.
5. The method for producing purified water according to claim 1, wherein in step S4, the anion and cation mixed resin is regenerated using a softened salt.
6. An apparatus for preparing purified water from steam condensate, which is used for implementing the method according to any one of claims 1 to 5, and which comprises a condensate water tank for containing the steam condensate, a heat exchanger for cooling the water to normal temperature, a water pump for conveying the condensate water from the condensate water tank to the heat exchanger, a filter for filtering the condensate water cooled to normal temperature, an activated carbon adsorption device for performing physical adsorption treatment on the condensate water after the filtration treatment, an ion exchange column for performing plasma exchange on the condensate water after the adsorption treatment, and a reverse osmosis system for performing reverse osmosis treatment on the condensate water after the plasma exchange.
7. The apparatus of claim 6, wherein the heat exchanger is a plate heat exchanger.
8. The apparatus of claim 6, wherein the water pump is a hot water pump.
9. The apparatus of claim 6, wherein the filter is a precision filter.
10. The apparatus for producing purified water from steam condensate according to claim 9, wherein the fine filter has a filter pore size of 5 to 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110592646.3A CN113233650A (en) | 2021-05-28 | 2021-05-28 | Method and device for preparing purified water from steam condensate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110592646.3A CN113233650A (en) | 2021-05-28 | 2021-05-28 | Method and device for preparing purified water from steam condensate |
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| CN113233650A true CN113233650A (en) | 2021-08-10 |
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| CN202110592646.3A Pending CN113233650A (en) | 2021-05-28 | 2021-05-28 | Method and device for preparing purified water from steam condensate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201201922Y (en) * | 2008-04-11 | 2009-03-04 | 南京中电联环保工程有限公司 | Advanced treatment apparatus for recycling condensate water |
| CN202865023U (en) * | 2012-10-31 | 2013-04-10 | 广东科德化工实业有限公司 | Industrial pure water preparation device |
| CN204301561U (en) * | 2014-11-25 | 2015-04-29 | 浙江天新药业有限公司 | Steam condensate recycling system |
| CN107140779A (en) * | 2017-07-06 | 2017-09-08 | 重集团大连工程技术有限公司 | The zero-discharge treatment system and its processing method of a kind of nuclear power plant evaporator sewer |
| CN108609777A (en) * | 2018-06-28 | 2018-10-02 | 中电环保股份有限公司 | A kind of the petrochemical industry lime set processing system and processing method of high temperature oil removing |
| US20190031543A1 (en) * | 2017-07-31 | 2019-01-31 | Ecolab Usa Inc. | Process Condensate Water Treatment |
-
2021
- 2021-05-28 CN CN202110592646.3A patent/CN113233650A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201201922Y (en) * | 2008-04-11 | 2009-03-04 | 南京中电联环保工程有限公司 | Advanced treatment apparatus for recycling condensate water |
| CN202865023U (en) * | 2012-10-31 | 2013-04-10 | 广东科德化工实业有限公司 | Industrial pure water preparation device |
| CN204301561U (en) * | 2014-11-25 | 2015-04-29 | 浙江天新药业有限公司 | Steam condensate recycling system |
| CN107140779A (en) * | 2017-07-06 | 2017-09-08 | 重集团大连工程技术有限公司 | The zero-discharge treatment system and its processing method of a kind of nuclear power plant evaporator sewer |
| US20190031543A1 (en) * | 2017-07-31 | 2019-01-31 | Ecolab Usa Inc. | Process Condensate Water Treatment |
| CN108609777A (en) * | 2018-06-28 | 2018-10-02 | 中电环保股份有限公司 | A kind of the petrochemical industry lime set processing system and processing method of high temperature oil removing |
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Application publication date: 20210810 |