CN100560509C - Utilize high rigidity high salinity concentrated seawater to make the method for industrial recirculated cooling water - Google Patents
Utilize high rigidity high salinity concentrated seawater to make the method for industrial recirculated cooling water Download PDFInfo
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- CN100560509C CN100560509C CNB2007100573037A CN200710057303A CN100560509C CN 100560509 C CN100560509 C CN 100560509C CN B2007100573037 A CNB2007100573037 A CN B2007100573037A CN 200710057303 A CN200710057303 A CN 200710057303A CN 100560509 C CN100560509 C CN 100560509C
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- water
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- heat exchange
- cooling tower
- high rigidity
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- 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
- C02F2103/023—Water in cooling circuits
-
- 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
- C02F2103/08—Seawater, e.g. for desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a kind of method of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water, its step has the passivation pre-treatment; It is heavy clear to catchment; The active processing; Filter; Heat exchange; Water after the above-mentioned processing is entered heat exchange system; The water that comes out from heat exchange system enters the cooling tower cooling again; Return the water reservoir under the cooling tower and replenish the water yield that reduces owing to evaporation; Move in circles.Beneficial effect is to use this treatment process not add rust-preventive agent, inhibiter, Biocidal algae-killing agent, total hardness of water after the processing is up to 4000-40000mg/L, the chlorine root is up to 30000-120000mg/L, the equipment corrosion rate of carbon steel, copper alloy, stainless steel is respectively: 0.13mm/a, 0.03mm/a.This method is applicable to all industry industrial circulating cooling water technologies, is equivalent to that to save fresh water about about 50% for entire city, is applicable to that also other contain the place that produces high salinity high rigidity trade effluent.Therefore, can realize zero blowdown, zero-emission water.Realize the conserve water resource, the protection environment.
Description
Technical field
The invention provides a kind of method of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water, this method is a kind of with ozone replacement interpolation inhibiter, Scale inhibitors and Biocidal algae-killing agent, the water-saving and environmental protection technology of the protection against corrosion of resolution system and fouling, sterilization, algae removal.
Background technology
The a large amount of high salinity high rigidity concentrated seawaters that produce with the desalination technology utilization, the approach that utilizes to this part resource has a lot: as salt manufacturing, make the chemical industry for making chlorine and alkali raw material, extract the element that economic worth is arranged, extract bromine, magnesium, boron, uranium, gold or discharge or the like as potassium.But with the dense water concentration that desalinizes seawater of present large-scale application, these methods also are not the treatment process of economical rationality.Because China's salt industry output is in hypersaturated state; The various medicaments that add in water during sea water desaltination are difficult to remove, and much also have certain toxic action; And the land rawore symbolic animal of the birth year of China's magnesium and calcium is when abundant; For oligo-elements, can industrialization except potassium, bromine, iodine, extract other trace element and also do not possess the economic value of extracting.And industrial colling accounts for about 70% of total industrial water consumption, if high salinity high rigidity concentrated seawater is made industrial recirculated cooling water, because salinity high rigidity height exists the great problem of various corrosions of metal, waits the technical problem that solves simultaneously in addition.
Seawater saltiness height and complicated component, only the specific conductivity of seawater is just than high two orders of magnitude of general fresh water, when this has just determined sea-water corrosion the resistive retardance more much smaller than fresh water, seawater has stronger corrodibility than fresh water; And the muriate ratio is very big in the contained salinity of seawater, and the chlorinity of seawater is up to 19%, and therefore most of metals such as iron, steel, cast iron etc. can not be set up passive state in seawater.Simultaneously, the kind of microorganism and mcroorganism is many in the seawater, content is high, easily produces biodeterioration, and then causes endangering bigger microbiological corrosion or underdeposit corrosion.In addition, incrustation ion in the seawater such as Ca
2+, Mg
2+Deng concentration far above general fresh water, improve with cycles of concentration, fouling tendency strengthens, common dirt dispersion agent can not effectively be controlled chemical dirt deposition.And adopt concentrated seawater to make recirculated cooling water, exist more serious burn into fouling and fouling organism attachment issue.Circularly-cooling sea water is handled than the fresh water circulation has bigger difficulty; It is more difficult than seawater circulation cooling again that concentrated seawater is done the recirculated cooling water processing.
Summary of the invention
For solving the problem that exists in the above-mentioned technology; the purpose of this invention is to provide a kind of method of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water; reaching trade effluent to high rigidity high salinity seawater, high rigidity high salinity etc. need not add inhibiter, Scale inhibitors and Biocidal algae-killing agent etc. and handle for three doses; realize the conserve water resource, the protection environment.
For achieving the above object, the technical solution used in the present invention provides a kind of method of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water, and this method may further comprise the steps:
A. passivation pre-treatment
To be corroded in the cooling system, the equipment of fouling cleans with clean-out system, uses the passivator passivation;
B. it is heavy clear to catchment
High rigidity high salinity seawater (degree Beaume has reached 10 left stones, hardness is 20000-70000mg/L) is removed suspended substance, be collected in the water reservoir under the cooling tower;
C. active the processing
The slightly year nano level TiO of 600mm of one layer thickness is housed in the water reservoir under the cooling tower
2Gac, and ozonation aerated system or mixing jet system are housed, carry out the O3 catalytic oxidation reaction, make the COD≤60mg/L in the water; O
30.05-0.20mg/L; DO≤2.0mg/L;
D. filter
Water after c handles is set by step entered strainer filter, simultaneously, the ozone in water concentration after monitoring is filtered makes it remain on 0.05-0.2mg/L, when adding ozone less than 0.05mg/L;
E. heat exchange
Water after the above-mentioned processing is entered heat exchange system, and the water that comes out from heat exchange system enters the cooling tower cooling again, returns the water reservoir under the cooling tower.Above-mentioned water needs to replenish water, addition and the steam output balance of evaporation section in the process of cooling in the cooling tower process of cooling.
Effect of the present invention is to use this treatment process not add rust-preventive agent, inhibiter, Biocidal algae-killing agent, total hardness of water after the processing is up to 4000-40000mg/L, the chlorine root is up to 30000-120000mg/L, the equipment corrosion rate of carbon steel, copper alloy, stainless steel is respectively: 0.13mm/a, 0.03mm/a.This method is applicable among the technology of all industry industrial circulating cooling waters, is equivalent to save fresh water about about 50% for entire city.Other contain the place that produces high salinity high rigidity trade effluent and also can utilize this technology to make industrial recirculated cooling water.Therefore, can realize zero blowdown, zero-emission water.Realize the conserve water resource, the protection environment.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the method for utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water of the present invention.
The reaction mechanism of utilizing high rigidity high salinity concentrated seawater to make the treatment process of industrial recirculated cooling water of the present invention generally believes according to the effect of making ozone in the industrial recirculated water at fresh water:
1, ozone is the very strong oxygenant of a kind of oxidation capacity, and it can direct oxidation forms unsaturated fatty acids, enzyme and the protein of cell, larger molecular organics is oxidized to inorganic molecules, thereby plays the effect of good sterilization algae removal;
2, mainly also is because the organism of ozone in can oxidation scale layer matrix makes the structure of dirt become loose, easily peels off and come off, thereby played the effect of scale inhibition from tube wall;
3, ozone can form with layer γ-Fe on the metallic surface
2O
3Oxide film has increased the corrosion resistance of metal, has reduced corrosion speed.
4, nano level TiO
2Application of Brand Active Carbon is in order to reduce the energy consumption of ozone, so that play the effect of sterilization algae removal and reduction COD better.
As shown in Figure 1, this method of treatment process of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water of the present invention may further comprise the steps:
A. passivation pre-treatment
To be corroded in the cooling system, the equipment of fouling and pipeline clean with clean-out system, the tap water with containing passivator circulated 24 hours, carried out passivation.Used passivator is the commercially available film that gives as inorganic matter types such as tungsten system, phosphorus system, molybdenum systems multiple commonly used.
B. it is heavy clear to catchment
(degree Beaume has reached about 10, hardness is 20000-70000mg/L for high salinity high rigidity brackish water after just the later concentrated seawater of sea water desaltination or other concentrate, trade effluent, its hardness is to contain lime carbonate 100-250mg/L) remove suspended substance, be collected in the water reservoir under the cooling tower.Employed in the process of removing suspended substance is microfiltration equipment, as filter plants such as ceramic stainless steel, fibrous bundle or membrane filtrations.At the high rigidity high salinity seawater described in this step, include high rigidity high salinity concentrated seawater and high rigidity high salinity trade effluent after the desalination.
C. active the processing
Year nano level TiO that one layer thickness is approximately 600mm is housed in the water reservoir under the cooling tower
2Gac, and ozonation aerated system is housed, carry out the O3 catalytic oxidation reaction, make the COD≤60mg/L in the water; O
30.05-0.20mg/L; DO≤2.0mg/L, year nano level TiO in this step
2Organism such as gac accelerate ozone and photochemical catalytic oxidation, sterilization algae removal, decomposition hydrobiont are beneficial to the oxidation capacity that improves ozone, energy-conservation.
D. filter
Water after c handles is set by step entered strainer filter, use fiber bundle filter recoil in per 8 hours once, the logical simultaneously pressurized air of recoil, about ten minutes recoil time.Simultaneously, the ozone in water concentration after monitoring is filtered makes it remain on 0.05-0.2mg/L, when less than 0.05mg/L, adds ozone to 0.05-0.2mg/L.
E. heat exchange
Water after the above-mentioned processing is entered heat exchange system, the water that comes out from heat exchange system enters the cooling tower cooling again, return the water reservoir under the cooling tower, above-mentioned water is in the cooling tower process of cooling, understand the water evaporation of some, domestic water (middle water) after handling can be replenished into institute's evaporable part, its addition and steam output balance get final product.
Embodiment:
1, at first with the equipment and pipeline (material the is all the carbon guiding principle) tap water that contains permolybdic acid sodium (about 20mg/L) passivator of its heat exchange system, circulating 24 hours in the one salinization factory workshop in Tianjin, carries out passivation;
2, in the trade effluent of certain factory saltiness up to 10-20Be ', the wherein content of main component such as following table: be collected in the water reservoir under the cooling tower;
| Preface | Title | Content mg/L |
| ?1 | ?Ca 2+ | 600-2000 |
| ?2 | ?Mg 2+ | 5000-20000 |
| ?3 | ?CI - | 54000-120000 |
| ?4 | Basicity | 150 |
3, one deck is housed and carries nano level TiO in the water reservoir under the cooling tower
2Gac (the about 600mm of thickness), and ozonation aerated system is housed; Carry out the O3 catalytic oxidation reaction, make the COD≤60mg/L in the water; O
30.05-0.20mg/L; DO≤2.0mg/L.
4, will be set by step 3 water after handling, enter fiber bundle filter and filter;
5, the concentration of back ozone in water is filtered in monitoring, makes it remain on 0.05-0.2mg/L;
6, enter heat exchange system;
7, the water that comes out from heat exchange system cools off through cooling tower, gets back to the water reservoir under the cooling tower.
8, processed water is in the cooling tower process of cooling, and the part of can volatilizing is added in " the middle water after the sanitary sewage disposal ", and addition is by the water level control of water reservoir; " middle water " (being generally fresh water) of adding descended from cooling tower top spray;
9, carry out with the 2-8 step cycle;
10, the recoil in per 8 hours of used fiber bundle filter once recoils and leads to pressurized air, about ten minutes recoil time simultaneously in the filtration;
11, recoil water enters the sludge thickener of sanitary sewage disposal facility, regularly handles it;
12, inaction period is looked ferrous ion in the water (generally be stabilized in≤stop transport when 0.03mg/L) concentration is higher than 0.04mg/L row, used domestic water (middle water) is replenished into institute's evaporable part, and the flushing heat exchange system can restart.
Claims (1)
1, a kind of treatment process of utilizing high rigidity high salinity concentrated seawater to make industrial recirculated cooling water, this method may further comprise the steps:
A. passivation pre-treatment
To be corroded in the cooling system, the equipment of fouling cleans with clean-out system, uses the passivator passivation;
B. it is heavy clear to catchment
With degree Beaume is 10, and hardness is the high rigidity high salinity concentrated seawater of 20000-70000mg/L, removes suspended substance, is collected in the water reservoir under the cooling tower;
C. active the processing
It is year nano level TiO of 600mm that one layer thickness is housed in the water reservoir under the cooling tower
2Gac, and ozonation aerated system or mixing jet system are housed, carry out the O3 catalytic oxidation reaction, make the COD≤60mg/L in the water; O
30.05-0.20mg/L; DO≤2.0mg/L;
D. filter
Water after c handles is set by step entered strainer filter, simultaneously, the ozone in water concentration after monitoring is filtered makes it remain on 0.05-0.2mg/L, when less than 0.05mg/L, adds ozone;
E. heat exchange
Water after d handles is set by step entered heat exchange system, the water that comes out from heat exchange system enters the cooling tower cooling again, returns the water reservoir under the cooling tower, and above-mentioned water is in the cooling tower process of cooling, need to replenish water, addition and the steam output balance of evaporation section in the process of cooling.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100573037A CN100560509C (en) | 2007-05-09 | 2007-05-09 | Utilize high rigidity high salinity concentrated seawater to make the method for industrial recirculated cooling water |
| PCT/CN2007/001699 WO2008138175A1 (en) | 2007-05-09 | 2007-05-25 | A method of high hardness and high salinity concentrated seawater as industrial circulating cooling water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100573037A CN100560509C (en) | 2007-05-09 | 2007-05-09 | Utilize high rigidity high salinity concentrated seawater to make the method for industrial recirculated cooling water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101049985A CN101049985A (en) | 2007-10-10 |
| CN100560509C true CN100560509C (en) | 2009-11-18 |
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ID=38781622
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100573037A Expired - Fee Related CN100560509C (en) | 2007-05-09 | 2007-05-09 | Utilize high rigidity high salinity concentrated seawater to make the method for industrial recirculated cooling water |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100560509C (en) |
| WO (1) | WO2008138175A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951689A (en) * | 2011-08-22 | 2013-03-06 | 苏州常乐泡塑有限公司 | Concentrated water recycle apparatus |
| CN103421361B (en) * | 2012-05-24 | 2015-04-08 | 北京赛科康仑环保科技有限公司 | Modified carbon nanometer coating used for scale inhibition of inner member of rectifying tower |
| CN103304056B (en) * | 2013-06-17 | 2015-10-07 | 南京德磊科技有限公司 | A kind of Catalytic oxidation sewage treatment equipment |
| CN104163528B (en) * | 2014-08-07 | 2016-08-17 | 王占军 | Circulation high-efficiency water-saving system |
| CN106587470A (en) * | 2016-11-23 | 2017-04-26 | 山东东岳氟硅材料有限公司 | Method and process system for innocuous treatment of high-salt and high-COD waste alkali liquid |
| CN107299358A (en) * | 2017-06-28 | 2017-10-27 | 富威科技（吴江）有限公司 | A kind of cleaning of the hard state copper foil of short route |
| CN109028645A (en) * | 2018-08-16 | 2018-12-18 | 佛山市和利环保科技有限公司 | Industrial circulating cooling water device |
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| JP4093796B2 (en) * | 2002-05-14 | 2008-06-04 | 三菱瓦斯化学株式会社 | Marine organism adhesion prevention method |
| CN1275878C (en) * | 2004-10-26 | 2006-09-20 | 南京工业大学 | Treatment method using seawater as circulating cooling water |
| CN100590081C (en) * | 2006-10-24 | 2010-02-17 | 天津市塘沽区鑫宇环保科技有限公司 | Treating method of brackish water for use as industrial circulation cooling water |
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- 2007-05-09 CN CNB2007100573037A patent/CN100560509C/en not_active Expired - Fee Related
- 2007-05-25 WO PCT/CN2007/001699 patent/WO2008138175A1/en active Application Filing
Non-Patent Citations (2)
| Title |
|---|
| 臭氧在循环冷却水处理中的杀菌作用. 李松田等.安全与环境学报，第5卷第4期. 2005 |
| 臭氧在循环冷却水处理中的杀菌作用. 李松田等.安全与环境学报，第5卷第4期. 2005 * |
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| Publication number | Publication date |
|---|---|
| WO2008138175A1 (en) | 2008-11-20 |
| CN101049985A (en) | 2007-10-10 |
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