CN107628714A - New DW system demineralized water system and its processing method after a kind of improvement - Google Patents
New DW system demineralized water system and its processing method after a kind of improvement Download PDFInfo
- Publication number
- CN107628714A CN107628714A CN201710410784.9A CN201710410784A CN107628714A CN 107628714 A CN107628714 A CN 107628714A CN 201710410784 A CN201710410784 A CN 201710410784A CN 107628714 A CN107628714 A CN 107628714A
- Authority
- CN
- China
- Prior art keywords
- water
- reverse osmosis
- pipeline
- ultrafiltration
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 207
- 238000003672 processing method Methods 0.000 title claims abstract description 6
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 111
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 60
- 239000000126 substance Substances 0.000 claims abstract description 13
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 11
- 239000003899 bactericide agent Substances 0.000 claims abstract description 11
- 239000012528 membrane Substances 0.000 claims description 25
- 150000003839 salts Chemical class 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 12
- 238000009296 electrodeionization Methods 0.000 claims description 12
- 150000002500 ions Chemical class 0.000 claims description 12
- 238000001764 infiltration Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 8
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 6
- 230000006378 damage Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 238000002242 deionisation method Methods 0.000 claims description 4
- 239000013618 particulate matter Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- 241000195493 Cryptophyta Species 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000008394 flocculating agent Substances 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000011033 desalting Methods 0.000 abstract description 4
- 238000010612 desalination reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 101100194816 Caenorhabditis elegans rig-3 gene Proteins 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
New DW system demineralized water system and its processing method after a kind of improvement, including processing raw water box, raw water pump, disc filter device, heat-exchanger rig, ultrafiltration apparatus, reverse osmosis unit and electric deionizer；Flocculant, bactericide chemicals dosing plant are connected between raw water pump and the disc filter device；Feed water by reverse osmosis pump, antisludging agent, reducing agent chemicals dosing plant, cartridge filter are connected between the ultrafiltration apparatus and reverse osmosis unit；Booster pump, cartridge filter are connected between the second level reverse osmosis apparatus and electric deionizer；The ultrafiltration apparatus and reverse osmosis unit are also associated with chemically-cleaning device.Change desalting water treatment system and meet boiler feedwater water quality requirement, have the advantages that equipment with high desalinization, automaticity are high, environmentally friendly, and equipment loss is small in system, service life is extended.
Description
Technical field
The present invention relates to the preparation of boiler feedwater in water treatment field, more particularly to pure water.
Background technology
Long-term production run experience recognizes everybody, the quality of therrmodynamic system reclaimed water, is to influence power plant heating power to set
It is standby（Steam oven, steam turbine etc.）One of an important factor for safety, economical operation.The natural water Jing Guo purified treatment does not contain perhaps
More impurity, this water is as entered Water vapour images, it will causes various harm.In order to ensure there is good water in therrmodynamic system
Matter, it is necessary to appropriate purified treatment is carried out to natural water, and strictly carries out carbonated drink quality surveillance.
Preparation method of the UF+RO+ electrodeionizations group technology as demineralized water, receive the more and more extensive attention of industry
With welcome.But there is the shortcomings of longtime running is then dirty stifled serious, service life is short in prior art, can not meet that equipment is long-term
The requirement well run.
The content of the invention
The present invention is directed to the deficiency of existing demineralized water preparation system, there is provided a kind of new desalting water treatment system of improvement
System.The DW system demineralized water system includes pretreatment early stage and film advanced desalination system two parts processing system, to the desalination after original sub-block
Rate is high, and few to equipment loss, reduces drug out loss, is advantageous to extension system service life.
To realize the object of the invention, there is provided following technical scheme：A kind of new DW system demineralized water system after improvement, including original
Water tank, disc filter, heat-exchanger rig, ultrafiltration system, counter-infiltration system and electrodeionization system, raw water box pass through the first pipe
Road connects disc filter, and raw water pump is provided with the first pipeline, and bactericide, flocculating agent feeding device connect with the first pipeline
Connect, ultrafiltration system includes ultrafiltration apparatus and ultrafiltration water tank；Counter-infiltration system includes first-stage reverse osmosis device, first-stage reverse osmosis production water
Case, second level reverse osmosis apparatus, two-pass reverse osmosis water tank；Electrodeionization system includes electric deionizer and sweet-water tank；
Disc filter connects heat-exchanger rig by second pipe, and heat-exchanger rig connects ultrafiltration apparatus, ultrafiltration apparatus by the 3rd pipeline
Ultrafiltration water tank is connected by the 4th pipeline, ultrafiltration water tank connects first-stage reverse osmosis device, first-stage reverse osmosis dress by the 5th pipeline
Put and first-stage reverse osmosis water producing tank is connected by the 6th pipeline, first-stage reverse osmosis water producing tank connects two-pass reverse osmosis by the 7th pipeline
Device, second level reverse osmosis apparatus connect two-pass reverse osmosis water tank by the 8th pipeline, and two-pass reverse osmosis water tank passes through the 9th
Pipeline connects electric deionizer, and electric deionizer connects sweet-water tank by the tenth pipeline, it is characterised in that the 5th pipeline
On be sequentially arranged RO booster pumps, the first cartridge filter, high-pressure pump, be sequentially arranged alkali throwing device, two on the 7th pipeline
Level high-pressure pump, has been sequentially arranged electrodeionization booster pump, the second cartridge filter on the tenth pipeline.
Preferably, the milipore filter of ultrafiltration apparatus is the hollow-fibre membrane of external-compression type, the material used is PVDF, membrane aperture
For 0.02 or 0.04 micron.With superpower physical chemistry tolerance.Its surface active layer is fine and close, and supporting layer is spongy network
Structure, have pressure-resistant, antipollution, service life long and producing water water quality can be ensured for a long time, to colloid, suspended particulate and macromolecule
Material has good separating capacity.
Preferably, heat-exchanger rig is plate type heat exchanger or shell-and-tube heat exchanger.
Preferably, separately set pipeline connection two-pass reverse osmosis water tank on the 4th pipeline, be provided with the pipeline acid,
Alkali, sodium hypochlorite medicine adding device and high-pressure pump.
Preferably, what ultrafiltration apparatus included milipore filter, feed tube is connected with milipore filter bottom, being connected with milipore filter top
Water producing pipe, the concentrated water discharge pipe on milipore filter top, milipore filter bottom are separately equipped with a concentrated water quick drain pipe, concentrated water quick drain
Valve is provided with pipe.
Preferably, a return line in parallel on the high-pressure pump of one-level, second level reverse osmosis apparatus, two level high-pressure pump, is returned
Flow tube is provided with valve on road.
To realize the object of the invention, there is provided the new DW system demineralized water system processing method after a kind of improvement, it is characterised in that bag
Include following steps：1）Raw water water is firstly added flocculant, bactericide, eliminates the harm of algae and mushroom in water, and passes through
Flocculation is assembled impurities in water, afterwards into disc filter, is removed the large particulate matter in water, is protected ultrafiltration
Film；
2）Disc filter water outlet is exchanged heat into heat exchanger with high-temperature steam, and raw water temperature is brought up into 20 ~ 25 DEG C, with
Follow-up membranous system is set to can reach optimal operational condition；
3）Water after heat exchanger heats up enters ultrafiltration apparatus, and the macromolecular particle material in water is retained using ultrafiltration apparatus；
4）Water after being handled by ultrafiltration apparatus carries out 5 μm of secondary filter through the first cartridge filter, is filled into first-stage reverse osmosis
Put, most of dissolved salts in water removal removed using reverse osmosis unit, at the same remove some macromoleculars and the last stage do not remove it is small
Particle etc.；
5) water outlet of first-stage reverse osmosis device carries out 5 μm of secondary filter through the second cartridge filter again, into two-pass reverse osmosis
Device, deionization is further removed, water outlet is using alkali carries high ph-values are added, to improve the salt rejection rate of second level reverse osmosis apparatus；
6）Second level reverse osmosis apparatus water outlet enters electric deionizer, and the ion retained in reverse osmosis produced water is further removed,
Ensure the water quality requirement for reaching boiler feedwater needs, and be output to sweet-water tank China and foreign countries and defeated utilized for water spot；
In the step 1）The preceding raw water polypropylene that flocculant, bactericide chemicals dosing plant add before disc filter is entered
Enter disc filter after acid amides, sodium hypochlorite mixing, enter back into and heat exchange heating is carried out in heat exchanger, improve at follow-up membranous system
The producing water ratio of reason；
In the step 4）、5）Middle reverse osmosis unit sets two sections of two-stage, can be to caused by leading portion per one-level reverse osmosis unit
Concentrated water is further processed, and improves the rate of recovery of counter-infiltration；
The step 6）Reverse osmosis produced water, by adding alkali to raise its pH, mitigates subsequent ion before ion interchange unit is entered
Crosspoint load, reduce water outlet conductivity.
Beneficial effect of the present invention：Using the desalting water treatment device of oil refining, the producing water water quality electrical conductivity after processing is small
In 0.2 μ s/cm, SiO2Less than 20 μ g/L, meet boiler feedwater water quality requirement, there is equipment with high desalinization, automaticity height, ring
The advantages that guarantor, while desalting water treatment of the present invention employs concentrated water ultrafiltration and concentrated water reverse osmosis process, by the utilization rate of water from 70%
87% is brought up to, is effectively saved water resource.Simple possible of the present invention, suitable for industrial application.Security personnel's filtering of film device front end
Device and chemicals dosing plant can ensure membranous system normal operation, be further ensured that the water quality and quantity stability of follow-up water outlet；Milipore filter group
The concentrated water discharge pipeline that part is set can reduce the operating load of ultrafiltration apparatus, improve water outlet efficiency；Reverse osmosis high-pressure pump designs back
Road, avoid high-pressure pump from opening impact of the moment to pipeline, be advantageous to reverse osmosis unit stable operation, reduce equipment loss.
Brief description of the drawings
Fig. 1 is present system schematic diagram.
Fig. 2 is ultrafiltration apparatus schematic diagram.
Embodiment
Embodiment 1：A kind of new DW system demineralized water system after improvement, including raw water box 1, disc filter 2, heat-exchanger rig 3,
Ultrafiltration system, counter-infiltration system and electrodeionization system, raw water box 1 is by the first pipeline a connections disc filter 2, and first
Raw water pump 4 is provided with pipeline a, bactericide, flocculating agent feeding device (5,6) are connected with the first pipeline a, and ultrafiltration system includes
Ultrafiltration apparatus 7.1 and ultrafiltration water tank 7.2；Counter-infiltration system include first-stage reverse osmosis device 8.1, first-stage reverse osmosis water producing tank 8.2,
Second level reverse osmosis apparatus 8.3, two-pass reverse osmosis water tank 8.4；Electrodeionization system includes electric deionizer 9.1 and desalination
Water tank 9.2；Disc filter 2 passes through the 3rd pipeline c connection ultrafiltration by second pipe b connections heat-exchanger rig 3, heat-exchanger rig 3
Device 7.1, ultrafiltration apparatus 7.1 pass through the 5th pipeline e connections by the 4th pipeline d connection ultrafiltration water tank 7.2, ultrafiltration water tank 7.2
First-stage reverse osmosis device 8.1, first-stage reverse osmosis device 8.1 pass through the 6th pipeline f connection first-stage reverse osmosis water producing tank 8.2, one-level
Reverse osmosis produced water tank 8.2 passes through the 8th pipe by the 7th pipeline g connections second level reverse osmosis apparatus 8.3, second level reverse osmosis apparatus 8.3
Road h connection two-pass reverse osmosis water tank 8.4, two-pass reverse osmosis water tank 8.4 pass through the 9th pipeline i connection electric deionizers
9.1, electric deionizer 9.1 has been sequentially arranged RO booster pumps by the tenth pipeline j connections sweet-water tank 9.2 on the 5th pipeline e
10th, the first cartridge filter 11, high-pressure pump 12, antisludging agent, reducing agent chemicals dosing plant（21、22）, it is sequentially arranged on the 7th pipeline g
There are alkali throwing device 13, two level high-pressure pump 14, the 3rd cartridge filter 23, electrodeionization increasing has been sequentially arranged on the tenth pipeline j
Press pump 15, the second cartridge filter 16.The milipore filter of ultrafiltration apparatus 7.1 be external-compression type hollow-fibre membrane, the material used for
PVDF, membrane aperture are 0.02 or 0.04 micron.Heat-exchanger rig 3 is plate type heat exchanger or shell-and-tube heat exchanger.It is another on 4th pipeline d
If pipeline connection two-pass reverse osmosis water tank 8.4, be provided with the pipeline acid, alkali, sodium hypochlorite medicine adding device (17,18,
19）And high-pressure pump 12.Ultrafiltration apparatus 7.1 include milipore filter 7.1.1, be connected with milipore filter 7.1.1 bottoms feed tube 7.1.2,
Water producing pipe 7.1.3, the concentrated water discharge pipe 7.1.4 on milipore filter 7.1.1 tops being connected with milipore filter 7.1.1 tops, milipore filter
7.1.1 bottom is separately equipped with a concentrated water quick drain pipe 7.1.5, and valve is provided with concentrated water quick drain pipe 7.1.5.One-level,
A return line 20 in parallel on the high-pressure pump 12 of second level reverse osmosis apparatus 8.1, two level high-pressure pump 14, install on return line 20
There is valve.
Embodiment 2：A kind of new DW system demineralized water system processing method after improvement, comprises the following steps：1）Raw water water is first
Flocculant, bactericide are first added, eliminates the harm of algae and mushroom in water, and is gathered impurities in water by flocculation
Collection, afterwards into disc filter, the large particulate matter in water is removed, protects milipore filter；
2）Disc filter water outlet is exchanged heat into heat exchanger with high-temperature steam, and raw water temperature is brought up into 20 ~ 25 DEG C, with
Follow-up membranous system is set to can reach optimal operational condition；
3）Water after heat exchanger heats up enters ultrafiltration apparatus, and the macromolecular particle material in water is retained using ultrafiltration apparatus；
4）Water after being handled by ultrafiltration apparatus carries out 5 μm of secondary filter through the first cartridge filter, is filled into first-stage reverse osmosis
Put, most of dissolved salts in water removal removed using reverse osmosis unit, at the same remove some macromoleculars and the last stage do not remove it is small
Particle etc.；
5) water outlet of first-stage reverse osmosis device carries out 5 μm of secondary filter through the second cartridge filter again, into two-pass reverse osmosis
Device, deionization is further removed, water outlet is using alkali carries high ph-values are added, to improve the salt rejection rate of second level reverse osmosis apparatus；
6）Second level reverse osmosis apparatus water outlet enters electric deionizer, and the ion retained in reverse osmosis produced water is further removed,
Ensure the water quality requirement for reaching boiler feedwater needs, and be output to sweet-water tank China and foreign countries and defeated utilized for water spot；
In the step 1）The preceding raw water polypropylene that flocculant, bactericide chemicals dosing plant add before disc filter is entered
Enter disc filter after acid amides, sodium hypochlorite mixing, enter back into and heat exchange heating is carried out in heat exchanger, improve at follow-up membranous system
The producing water ratio of reason；
In the step 4）、5）Middle reverse osmosis unit sets two sections of two-stage, can be to caused by leading portion per one-level reverse osmosis unit
Concentrated water is further processed, and improves the rate of recovery of counter-infiltration；
The step 6）Reverse osmosis produced water, by adding alkali to raise its pH, mitigates subsequent ion before ion interchange unit is entered
Crosspoint load, reduce water outlet conductivity.
First-stage reverse osmosis device and second level reverse osmosis apparatus are mainly used in the dissolved salts in water removal, while remove
Organic macromolecule, the little particle that the last stage does not remove etc..The charged ion, inorganic that reverse osmosis unit can be effectively gone in water removal
Thing, colloidal particles, bacterium and organic substance etc..It is most preferably setting in high purity water preparation, bitter desalination and waste water treatment process
It is standby.Ultrafiltration apparatus, the structure of first-stage reverse osmosis device and second level reverse osmosis apparatus and principle are membrane separation technique, are with pressure
For the membrane separating process of motive force.
In order to be further ensured that the stable operation of system high efficiency and ensure that producing water water quality is up to standard, more specifically work in the present invention
Skill process is as follows：
1st, disc filter device is the filter for the endogenous backwash that aperture is 100 μm, and the filter devises on filter disc two sides
The rib of different structure, these ribs are superimposed the interception face of composition, and wherein curve rib, which primarily serves, intercepts and store suspension
Effect, it can ensure that during backwash filter disc need not be unclamped using the bigger open design in outside, can also reach when hydraulic pressure is relatively low
Thoroughly backwash effect；Ring-type seamed edge determines filtering accuracy, forms the passage of water.This filter can remove larger in water inlet
Particle, to ensure that milipore filter is not damaged by.
2nd, plate type heat exchanger/shell-and-tube heat exchanger heating heat exchange, raw water are exchanged heat with high-temperature steam, improve raw water water
Temperature, raw water temperature can be brought up to 20 ~ 25 DEG C by 5 DEG C, optimal operational condition is provided for the processing of follow-up membranous system.Due at this
Brine system is used in boiler feed water, and plant area typically has excess steam to be available for utilizing, therefore is utilized and steamed steam water heat exchanger to raw water
Heated up, economically feasible.
3rd, entered by the water of disc filter in hollow fiber uf membrane system, bulky grain thing is retained by milipore filter, water
And molecule particles are ultrafiltration production water through film, production water enters ultrafiltration water tank, and ultrafiltration concentrated water is discharged into plant area's drainage system.Work as system
When operation reaches certain time, operation stops, and the water in ultrafiltration water tank enters ultrafiltration apparatus after backwashing pump boosts and carries out backwash,
The particulate matter for being trapped in ultrafiltration membrane surface is gone out into milipore filter, it is recovered normal ability to work.Backwash reaches certain number,
Appropriate Chemical cleaning medicine need to be added in backwash, ensures that ultrafiltration apparatus is run steadily in the long term.Ultrafiltration apparatus filtering water outlet is dirty
Staining index SDI values<3, water outlet meets the requirement of feed water by reverse osmosis.Raw water enters before ultrafiltration apparatus by bactericide chemicals dosing plant
Sodium hypochlorite (NaClO) is added, to prevent in milipore filter and reverse osmosis membrane surface breed bacteria microorganism, and is also had to organic matter
Certain removal effect.
4th, fill 5 water out from ultrafiltration and enter two-stage reverse osmosis through the supercharging of RO booster pumps, cartridge filter and one-level high-pressure pump
Desalination in saturating device 11,15, the dissolved salts mainly gone in reverse osmosis unit in water removal, while remove some organic big point
Son, the little particle that the last stage does not remove etc..
And by antisludging agent, reducing agent chemicals dosing plant between first-stage reverse osmosis device RO booster pumps and the first cartridge filter
Reducing agent and antisludging agent are added, wherein antisludging agent is with the slightly solubility inorganic salts in energy disperse water, inhibits or interferes with slightly solubility
Precipitation, fouling function of the inorganic salts in metal surface, and maintain hardware to have a kind of medicament of good heat-transfer effect, it can prevent
Only the metal ion such as iron, manganese forms dirt in membrane tube, less developer, saves dosing cost, can obtain most economical scale inhibition
Control.Scale prevention ability is strong, suitable for various water quality, works well, and can reduce the cleaning to film, prolonging service lifetime of film.Also
Former agent can react rapidly in the short time with residual chlorine, oxidisability hidden danger effectively be removed, for the chlorine residue in reductive water.
Cartridge filter is to remove more than 5 μm of suspension, to protect reverse osmosis membrane not to be blocked, therefore is otherwise known as
Accurate filter, it is last one for the treatment of process that raw water enters before reverse osmosis membrane.Because reverse osmosis membrane is the pressure in high-pressure pump
The lower work of power driving, pressure is usually 1.5MPa or so, after entering reverse osmosis membrane if mechanical admixture, then in high-pressure pump
Under driving, mechanical admixture will be directed into reverse osmosis unit, gently then cause it is dirty stifled, it is heavy then scratch reverse osmosis membrane, cause counter-infiltration
The producing water ratio of film declines and the destruction of reverse osmosis membrane.
Due to the water inlet pipe generally from the outlet pipe of ultrafiltration apparatus to first-stage reverse osmosis device, from first-stage reverse osmosis device
Outlet pipe to and have certain distance between the water inlet pipe of level reverse osmosis unit and be connected with pipeline (pipeline welding slag etc.), booster pump,
High-pressure pump, reverse osmosis water outlet case etc., are easily contaminated and caused fraction solids particulate enters in reverse osmosis membrane, make counter-infiltration
Film occurs dirty stifled or scratched, therefore is provided with cartridge filter and these impurity are retained.In addition to granule foreign, security personnel
Filter has good removal effect to turbidity, iron and silicon isocolloid material.The built-in wound form of cartridge filter or spray fusing
Polypropylene filter core (5 microns of filtration grade), inlet and outlet set pressure indicator, should change filter in time when the differential reaches a set point
Core.By the separation of reverse osmosis membrane, in water about 99% salinity is separated, discharged with concentrated water.Second level reverse osmosis apparatus takes off
Production water after salt enters electric deionizer.Concentrated water enters reverse osmosis concentrated water collection water tank and carries out other purposes.In counter-infiltration group
, can be by some contaminants for being difficult to rinse out after part longtime running.Such as long-term micro salt fouling and organic matter
Accumulation, and membrane module hydraulic performance decline is caused, so must be cleaned with chemicals, to recover its normal desalination ability.
Two steps ro film group sets a set of shared purging system.3 ~ 4 times/year of Chemical cleaning cycle.When reverse osmosis unit is shut down,
Because the water inside film is in enrichment stage, under static state, the pollution of membrane module is easily caused, therefore also need to use fresh water
Flushing membrane surface, to prevent accumulation of pollutants on reverse osmosis membrane surface, influence the performance of film.Therefore system sets flush water pump to enter
Low-pressure washing after row shutdown.
5th, ion-exchange reactions will go out water producing tank by the production water of second level reverse osmosis apparatus into the anti-counter-infiltration of two level, be gone through electricity
Ion booster pump is lifted into electric deionizer.
Raw water also has a small amount of dissolving ion to exist after two-pass reverse osmosis desalination in water, to meet that the water quality of demineralized water will
Ask, design uses electric deionizer（Packed-bed electrodialysis is also known as electrodeionization method Electrodeionization）Carry out deep
Degree removes salt treatment, equivalent to ion exchange two level mixed bed desalination process.Electric deionizer utilizes the polarization in electrodialytic process
Phenomenon carries out electrochemical regeneration to ion exchange packed bed, the advantages of having concentrated electrodialysis and ion-exchange, overcomes both
The drawbacks of.It is 0.45 μm to be needed before into electric deionizer by cartridge filter secondary filter, filtering accuracy, makes to meet into water
Electrodeionization processing requirement.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (7)
1. the new DW system demineralized water system after a kind of improvement, including raw water box, disc filter, heat-exchanger rig, ultrafiltration system, reverse osmosis
Permeable system and electrodeionization system, raw water box connect disc filter by the first pipeline, raw water are provided with the first pipeline
Pump, bactericide, flocculating agent feeding device are connected with the first pipeline, and ultrafiltration system includes ultrafiltration apparatus and ultrafiltration water tank；Reverse osmosis
Permeable system includes first-stage reverse osmosis device, first-stage reverse osmosis water producing tank, second level reverse osmosis apparatus, two-pass reverse osmosis water tank；Electricity
Deionization system includes electric deionizer and sweet-water tank；Disc filter connects heat-exchanger rig by second pipe, changes
Thermal connects ultrafiltration apparatus by the 3rd pipeline, ultrafiltration apparatus connects ultrafiltration water tank by the 4th pipeline, and ultrafiltration water tank passes through
5th pipeline connect first-stage reverse osmosis device, first-stage reverse osmosis device by the 6th pipeline connect first-stage reverse osmosis water producing tank, one
Level reverse osmosis produced water tank connects second level reverse osmosis apparatus by the 7th pipeline, and second level reverse osmosis apparatus connects two by the 8th pipeline
Level reverse osmosis water outlet case, two-pass reverse osmosis water tank connect electric deionizer by the 9th pipeline, and electric deionizer passes through
Tenth pipeline connects sweet-water tank, it is characterised in that RO booster pumps, the first cartridge filter, height have been sequentially arranged on the 5th pipeline
Press pump, alkali throwing device, two level high-pressure pump have been sequentially arranged on the 7th pipeline, electrodeionization increasing has been sequentially arranged on the tenth pipeline
Press pump, the second cartridge filter.
2. the new DW system demineralized water system after a kind of improvement according to claim 1, it is characterised in that the ultrafiltration of ultrafiltration apparatus
Film is the hollow-fibre membrane of external-compression type, and for the material used for PVDF, membrane aperture is 0.02 or 0.04 micron.
3. the new DW system demineralized water system after a kind of improvement according to claim 1, it is characterised in that heat-exchanger rig is board-like
Heat exchanger or shell-and-tube heat exchanger.
4. the new DW system demineralized water system after a kind of improvement according to claim 1, it is characterised in that separately set on the 4th pipeline
One pipeline connects two-pass reverse osmosis water tank, and acid, alkali, sodium hypochlorite medicine adding device and high-pressure pump are provided with the pipeline.
5. the new DW system demineralized water system after a kind of improvement according to claim 1, it is characterised in that ultrafiltration apparatus includes super
Filter membrane, feed tube, the water producing pipe being connected with milipore filter top, the concentrated water discharge pipe on milipore filter top are connected with milipore filter bottom,
Milipore filter bottom is separately equipped with a concentrated water quick drain pipe, and valve is provided with concentrated water quick drain pipe.
6. the new DW system demineralized water system after a kind of improvement according to claim 1, it is characterised in that one-level, two-pass reverse osmosis
A return line in parallel on the high-pressure pump of device, two level high-pressure pump, valve is installed on return line.
A kind of 7. new DW system demineralized water system processing method after improvement as described in one of claim 1 ~ 6, it is characterised in that bag
Include following steps：1）Raw water water is firstly added flocculant, bactericide, eliminates the harm of algae and mushroom in water, and passes through
Flocculation is assembled impurities in water, afterwards into disc filter, is removed the large particulate matter in water, is protected ultrafiltration
Film；
2）Disc filter water outlet is exchanged heat into heat exchanger with high-temperature steam, and raw water temperature is brought up into 20 ~ 25 DEG C, with
Follow-up membranous system is set to can reach optimal operational condition；
3）Water after heat exchanger heats up enters ultrafiltration apparatus, and the macromolecular particle material in water is retained using ultrafiltration apparatus；
4）Water after being handled by ultrafiltration apparatus carries out 5 μm of secondary filter through the first cartridge filter, is filled into first-stage reverse osmosis
Put, most of dissolved salts in water removal removed using reverse osmosis unit, at the same remove some macromoleculars and the last stage do not remove it is small
Particle etc.；
5) water outlet of first-stage reverse osmosis device carries out 5 μm of secondary filter through the second cartridge filter again, into two-pass reverse osmosis
Device, deionization is further removed, water outlet is using alkali carries high ph-values are added, to improve the salt rejection rate of second level reverse osmosis apparatus；
6）Second level reverse osmosis apparatus water outlet enters electric deionizer, and the ion retained in reverse osmosis produced water is further removed,
Ensure the water quality requirement for reaching boiler feedwater needs, and be output to sweet-water tank China and foreign countries and defeated utilized for water spot；
In the step 1）The preceding raw water polypropylene that flocculant, bactericide chemicals dosing plant add before disc filter is entered
Enter disc filter after acid amides, sodium hypochlorite mixing, enter back into and heat exchange heating is carried out in heat exchanger, improve at follow-up membranous system
The producing water ratio of reason；
In the step 4）、5）Middle reverse osmosis unit sets two sections of two-stage, can be to caused by leading portion per one-level reverse osmosis unit
Concentrated water is further processed, and improves the rate of recovery of counter-infiltration；
The step 6）Reverse osmosis produced water, by adding alkali to raise its pH, mitigates subsequent ion before ion interchange unit is entered
Crosspoint load, reduce water outlet conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410784.9A CN107628714A (en) | 2017-06-04 | 2017-06-04 | New DW system demineralized water system and its processing method after a kind of improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410784.9A CN107628714A (en) | 2017-06-04 | 2017-06-04 | New DW system demineralized water system and its processing method after a kind of improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107628714A true CN107628714A (en) | 2018-01-26 |
Family
ID=61099090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710410784.9A Pending CN107628714A (en) | 2017-06-04 | 2017-06-04 | New DW system demineralized water system and its processing method after a kind of improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107628714A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721180A (en) * | 2019-01-28 | 2019-05-07 | 国家海洋局天津海水淡化与综合利用研究所 | Alkaline land improving elutes method for treating water and mobile elution water treatment facilities |
| CN109942112A (en) * | 2019-04-04 | 2019-06-28 | 贵州中车绿色环保有限公司 | A kind of recycling and processing equipment of ardealite storage yard percolate and its processing method |
| CN110217929A (en) * | 2019-05-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of make up water treatment system and method suitable for Distribution of Natural formula energy source station |
| CN110542346A (en) * | 2019-10-22 | 2019-12-06 | 开封龙宇化工有限公司 | device for removing scale of trioxymethylene heat exchanger |
| CN110835181A (en) * | 2019-11-25 | 2020-02-25 | 中霖中科环境科技（安徽）股份有限公司 | Mine water treatment system |
| CN111377573A (en) * | 2018-12-28 | 2020-07-07 | 无锡博泛特工程设备有限公司 | Boiler make-up water treatment system |
| CN112723644A (en) * | 2021-01-08 | 2021-04-30 | 长庆工程设计有限公司 | Device, system and method for improving water yield of desalted water |
| CN112919693A (en) * | 2021-01-21 | 2021-06-08 | 倍杰特集团股份有限公司 | Full-membrane-process desalted water treatment system and treatment method thereof |
| CN113666521A (en) * | 2021-08-26 | 2021-11-19 | 广东仙津保健饮料食品有限公司 | Beverage workshop water purification system |
| CN114380444A (en) * | 2021-12-29 | 2022-04-22 | 江苏方洋水务有限公司 | High-salinity wastewater desalination treatment system and method |
| WO2022143272A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Seawater desalination process system for supplying boiler supplemental water for thermal recovery of heavy oil in offshore oil fields |
| CN115385491A (en) * | 2022-09-29 | 2022-11-25 | 上海电气电站环保工程有限公司 | Pre-desalination system with salt water self-treatment function |
| CN117486409A (en) * | 2023-11-13 | 2024-02-02 | 重庆中润新材料股份有限公司 | Desalted water production process and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202156962U (en) * | 2011-07-04 | 2012-03-07 | 吉林市世纪华扬环境工程有限公司 | Demineralized water treating device for refining petroleum |
| CN102942265A (en) * | 2012-11-16 | 2013-02-27 | 南京中电环保工程有限公司 | Whole-membrane-process water treatment integration device |
| CN203043849U (en) * | 2012-11-16 | 2013-07-10 | 湖州德翔环境科技有限公司 | Self-control ultrafiltration system |
| CN203568913U (en) * | 2013-11-15 | 2014-04-30 | 江苏常环环境科技有限公司 | Sewage recycling device |
| CN207002478U (en) * | 2017-06-04 | 2018-02-13 | 江苏沃尔特环保有限公司 | A kind of new DW system demineralized water system after improvement |
-
2017
- 2017-06-04 CN CN201710410784.9A patent/CN107628714A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202156962U (en) * | 2011-07-04 | 2012-03-07 | 吉林市世纪华扬环境工程有限公司 | Demineralized water treating device for refining petroleum |
| CN102942265A (en) * | 2012-11-16 | 2013-02-27 | 南京中电环保工程有限公司 | Whole-membrane-process water treatment integration device |
| CN203043849U (en) * | 2012-11-16 | 2013-07-10 | 湖州德翔环境科技有限公司 | Self-control ultrafiltration system |
| CN203568913U (en) * | 2013-11-15 | 2014-04-30 | 江苏常环环境科技有限公司 | Sewage recycling device |
| CN207002478U (en) * | 2017-06-04 | 2018-02-13 | 江苏沃尔特环保有限公司 | A kind of new DW system demineralized water system after improvement |
Non-Patent Citations (1)
| Title |
|---|
| 杨保祥等, 北京冶金工业出版社 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377573A (en) * | 2018-12-28 | 2020-07-07 | 无锡博泛特工程设备有限公司 | Boiler make-up water treatment system |
| CN109721180A (en) * | 2019-01-28 | 2019-05-07 | 国家海洋局天津海水淡化与综合利用研究所 | Alkaline land improving elutes method for treating water and mobile elution water treatment facilities |
| CN109942112A (en) * | 2019-04-04 | 2019-06-28 | 贵州中车绿色环保有限公司 | A kind of recycling and processing equipment of ardealite storage yard percolate and its processing method |
| CN110217929A (en) * | 2019-05-15 | 2019-09-10 | 华电电力科学研究院有限公司 | A kind of make up water treatment system and method suitable for Distribution of Natural formula energy source station |
| CN110542346A (en) * | 2019-10-22 | 2019-12-06 | 开封龙宇化工有限公司 | device for removing scale of trioxymethylene heat exchanger |
| CN110835181A (en) * | 2019-11-25 | 2020-02-25 | 中霖中科环境科技（安徽）股份有限公司 | Mine water treatment system |
| WO2022143272A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Seawater desalination process system for supplying boiler supplemental water for thermal recovery of heavy oil in offshore oil fields |
| CN112723644A (en) * | 2021-01-08 | 2021-04-30 | 长庆工程设计有限公司 | Device, system and method for improving water yield of desalted water |
| CN112919693A (en) * | 2021-01-21 | 2021-06-08 | 倍杰特集团股份有限公司 | Full-membrane-process desalted water treatment system and treatment method thereof |
| CN113666521A (en) * | 2021-08-26 | 2021-11-19 | 广东仙津保健饮料食品有限公司 | Beverage workshop water purification system |
| CN114380444A (en) * | 2021-12-29 | 2022-04-22 | 江苏方洋水务有限公司 | High-salinity wastewater desalination treatment system and method |
| CN115385491A (en) * | 2022-09-29 | 2022-11-25 | 上海电气电站环保工程有限公司 | Pre-desalination system with salt water self-treatment function |
| CN117486409A (en) * | 2023-11-13 | 2024-02-02 | 重庆中润新材料股份有限公司 | Desalted water production process and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107628714A (en) | New DW system demineralized water system and its processing method after a kind of improvement | |
| CN105152399B (en) | A kind of counter-infiltration container-type sea water desalinating unit and its production hydraulic art | |
| CN103539288B (en) | Industrial wastewater recovery method and wastewater recovery system | |
| CN105000737B (en) | A kind of Industrial sewage treatment system and sewage water treatment method | |
| CN102285705B (en) | Method for cleaning reverse osmosis system | |
| CN105000755A (en) | Wastewater zero-emission industrial sewage treatment system and treatment method | |
| US20080067071A1 (en) | Concentrate recycle loop with filtration module | |
| CN202156962U (en) | Demineralized water treating device for refining petroleum | |
| CN105668896A (en) | Purified water preparation system | |
| CN203728664U (en) | Wastewater recovery system | |
| CN102020380A (en) | Sewage treatment device and process | |
| CN206692490U (en) | A kind of ultrapure water system | |
| CN205222857U (en) | Reverse osmosis container formula sea water desalination device | |
| CN207002478U (en) | A kind of new DW system demineralized water system after improvement | |
| CN210030227U (en) | Concentration treatment device for chemical nickel plating rinsing wastewater | |
| CN107500450A (en) | Desulfurization wastewater zero-emission processing method | |
| CN102249372A (en) | Immersed ultrafiltration and device and preparation system of pure water | |
| CN113045059A (en) | Treatment system and treatment process for realizing zero discharge of wastewater by full-membrane method | |
| CN107824048A (en) | A kind of sewage-treatment plant and its operation method for improving membrane filtration system performance | |
| CN204958618U (en) | System for adopt tubular micro -filtration membrane to get rid of silicide in industrial water and waste water | |
| CN107265742A (en) | A kind of embrane method bitter softening method based on magnetization preconditioning technique | |
| CN206886868U (en) | Desalting water treatment device for surface water | |
| CN106430701A (en) | High-salinity water purifying treatment system | |
| CN112919693B (en) | Full-membrane-process desalted water treatment system and treatment method thereof | |
| CN203498181U (en) | System for recycling waste acid and waste alkali |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180126 |
|
| WD01 | Invention patent application deemed withdrawn after publication |