CN106745553A - A kind of electricity improved for circulating water quality expels sub- membrane process device and method - Google Patents
A kind of electricity improved for circulating water quality expels sub- membrane process device and method Download PDFInfo
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- CN106745553A CN106745553A CN201611138683.2A CN201611138683A CN106745553A CN 106745553 A CN106745553 A CN 106745553A CN 201611138683 A CN201611138683 A CN 201611138683A CN 106745553 A CN106745553 A CN 106745553A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 304
- 230000005611 electricity Effects 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000012528 membrane Substances 0.000 title claims abstract description 20
- 241000370738 Chlorion Species 0.000 claims abstract description 22
- 238000005189 flocculation Methods 0.000 claims abstract description 22
- 230000016615 flocculation Effects 0.000 claims abstract description 22
- 238000011033 desalting Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 18
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 24
- 239000013589 supplement Substances 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 238000012512 characterization method Methods 0.000 claims description 6
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 7
- 239000000498 cooling water Substances 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 241000628997 Flos Species 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4698—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electro-osmosis
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of electricity improved for circulating water quality expels sub- membrane process device and method, belongs to water treatment field.The process unit expels sub- film device, circulation, water quality on-line detecting system and automatic control system including electricity, can also include flocculation filter.The process includes：(1) raw water quality is detected, when electrical conductivity, temporary hardness or chlorion occur more than any one situation of index, sub- film device is expelled into electricity using raw water and is processed；Each parameter occurs less than or equal to the situation of index simultaneously when, circulation is entered using raw water, electricity expels sub- film device and carries out desalting processing to draining；(2) water quality on-line detecting system, determines the water quality parameter of recirculated water；(3) circulating water quality index of stability is controlled 5.5~6 by automatic control system.The method can improve circulating water quality, different for raw water quality, select different disposal scheme, effectively reduce investment and operating cost, have the advantages that water-saving and emission-reducing.
Description
Technical field
It is specifically a kind of to drive ionic membrane for the electricity that circulating water quality improves the present invention relates to a kind of water treatment field
Process unit and method.
Background technology
China year billion cubic meter of industrial water consumption about 1500, wherein circulating cooling water consumption accounts for 2/3 of total water consumption or so,
About 1000 billion cubic meters.The water consume industry circulating cooling water consumption high such as electric power, steel, coking, petrochemical industry, chemical industry, pharmacy, food is accounted for
To the 80%~90% of industry water total amount.Circulating cooling water consumption is huge, for saving water resource, it is desirable to recirculated cooling water
System is run with compared with high concentration multiple, to reduce circulation water consumption.However, cycles of concentration higher can cause recirculated water
Middle salinity is excessively concentrated, and causes hardness and salinity higher, so as to cause following problem：
(1) fouling：Evaporation and concentration causes calcium ions and magnesium ions and heavy carbonic radical content in recirculated water to increase, and heavy carbonate can be because
Loss is parsed for heat exchange heats up, calcium carbonate is separated out on system heat transfer surface in hypersaturated state, fouling.Fouling
The generation of phenomenon, can cause heat exchanger dirtiness resistance value drastically to raise and decline with heat exchange efficiency, and system energy consumption is significantly increased.
(2) corrode：Salinity increases during evaporation and concentration causes recirculated water, causes the electrochemical corrosion of metal to accelerate.And chlorine from
Sub- concentration is raised, and can aggravate the generation of metal Cavitations, causes the heat transmission equipment life-span to reduce, and serious can also trigger seepage thing
Therefore, cause serious economic loss.
In order to solve fouling and the etching problem of recirculating cooling water system, both at home and abroad generally using chemical method to circulating cooling
Water is processed, i.e., prevent scaling and corrosion to the chemical reagent such as antisludging agent and corrosion inhibiter are added in recirculated water.One
Determine under condition of water quality, chemical method has good effect to scaling and corrosion phenomenon, but increase with cycles of concentration and
Water quality deterioration, chemical method can cause following problem：Firstth, dosing is increased considerably, and causes operating cost high；Secondth,
Most of chemical agents have harmfulness to environment, and environment compatibility is poor, and content of the medicament in water is concentrated with cooling water
Improve constantly, System drainage will be strictly controlled；3rd, some consumption of chemical agent increases can cause system corrosion and operation
Maintenance issues, cause that cycles of concentration cannot be effectively improved, and using water wisely is restricted.
In order to overcome the defect of chemical treatment method, also have carries out direct current at present using electrochemical treatments technique to recirculated water
It is electrolysed the method for the treatment of.The method can effectively remove hardness and heavy carbonate in recirculated water by DC electrolysis, it is to avoid be
System fouling, while the Active Chlorine of anode generation, active oxygen have good bactericidal action, can avoid recirculated water bacterium algae from growing,
Prevent underdeposit corrosion.But the technique for the electrochemical corrosion phenomenon that recirculated water high in salt is formed, especially chlorine ion concentration compared with
The high concentration Active Chlorine corrosion phenomenon separated out under the conditions of height cannot be avoided.
In sum, how to reduce circulation salinity water, hardness, chlorion, for improve circulating water quality, effectively improve it is dense
Demagnification number, realizes that water-saving and emission-reducing is significant.
The content of the invention
The present invention is directed to circulation above mentioned problem, there is provided a kind of to drive ionic membrane for the electricity that circulating water quality improves
Process unit and method, in the process unit improved for circulating water quality, expel sub- film device, according to recirculated water using electricity
Water quality, moisturizing or draining to recirculated water carry out desalting processing, and the process has the advantages that water-saving and emission-reducing.
A kind of electricity improved for circulating water quality of the invention expels sub- membrane process device, including electricity drives ionic membrane and sets
Standby, circulation, water quality on-line detecting system and automatic control system；Electricity expels sub- film device and goes out including water inlet, product water
Mouth and concentrated water discharge mouthful, circulation include recirculated water admission port, recirculated water water return outlet, supplement water water inlet and discharge outlet,
The recirculated water admission port of circulation and the recirculated water water return outlet of circulation form closed cycle；Electricity expels sub- film device
The supplement water water inlet for producing water out and circulation connected by liquid-filled pipe, it is online that circulation is provided with water quality
Detecting system, water quality on-line detecting system expels sub- film device and connects by automatic control system and electricity；
Described water quality on-line detecting system, is used to determine circulating water quality pH value, total hardness, total alkalinity, total salinity, chlorine
Ion and water temperature.
Described automatic control system, for monitoring circulating water quality index of stability, automatically controls electricity and expels sub- film device
Aquifer yield.
A kind of electricity improved for circulating water quality expels sub- membrane process device, can also include flocculation filter；Wadding
The water of solidifying filter flows into one end and is connected with the discharge outlet of circulation, and the water of flocculation filter flows out one end and driven with electricity
The water inlet connection of ion film device；
A kind of process improved for circulating water quality, concrete technical scheme is as follows：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
When occur the μ S/cm of electrical conductivity ＞ 1000, temporary hardness ＞ 450mg/L or chlorion ＞ 150mg/L any one
During situation, using following scheme one：
Raw water expels sub- film device and carries out desalting processing by water inlet into electricity, obtains producing water and concentrated water, and concentrated water is through dense
Water outlet is discharged, and produces water from water out outflow is produced, and produces water as circulating water system, and circulation is entered by supplementing water water inlet
Water system；
Wherein, when electricity expels sub- film device desalting processing, technological parameter is：1. producing water ratio 85%~90%；2. salt rejection rate
75%~90%；
As electrical conductivity≤1000 μ S/cm, temporary hardness≤450mg/L and chlorion≤150mg/L, three kinds of situations go out simultaneously
Now, using following scheme two：
Raw water enters circulation by recirculated water admission port, by after circulation, forms draining, and draining is from circulating water
The discharge outlet outflow of system, carries out flocculation filtration pretreatment, after flocculation filtration pretreatment, by water inlet into flocculation filter
Expelling sub- film device into electricity carries out desalting processing, obtains producing water and concentrated water, and concentrated water is discharged through concentrated water discharge mouthful, produces water from product water
Outlet outflow, produces water as circulating cooling make-up water, and circulation is returned by supplementing water water inlet；
Wherein, when electricity expels sub- film device desalting processing, technological parameter is 1. producing water ratio 80%~85%；2. salt rejection rate
75%~80%；
(2) the water quality on-line detecting system set in circulation, determines the water quality parameter of recirculated water, specifically includes
PH value, total hardness, total alkalinity, total salinity, chlorion and water temperature.
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and lead to
Automatic control system is crossed to control 5.5~6 circulating water quality index of stability；
As circulating water quality index of stability ＞ 6, the aquifer yield that electricity expels sub- film device is reduced, until circulating water quality is steady
It is 5.5~6 to determine index；
As circulating water quality index of stability ＜ 5.5, increase the aquifer yield that electricity expels sub- film device, until circulating water quality
Index of stability is 5.5~6.
A kind of electricity improved for circulating water quality of the invention expels sub- membrane process device and method, compared to existing skill
Art, its feature is with advantage：
Firstth, circulation water quality can be effectively improved, it is ensured that circulating water quality index of stability between 5.5-6,
Close to preferable micro- dirty running status；
Secondth, for raw water quality situation, using different disposal scheme, investment and operating cost are effectively reduced；
3rd, automated system operation is realized by automation control system, it is ensured that circulating water quality improves, and is prevented effectively from
Manual detection and the risk of experience operation；
4th, it is effectively reduced chemical treatment medicament to use, reduces circulation operating cost, reduces recirculated water draining
Environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention expels sub- membrane process device for the electricity that circulating water quality improves；
Wherein, 1 for electricity expel sub- film device, 2 be circulation, 3 be water quality on-line detecting system, 4 to automatically control
System；1.1 be water inlet, 1.2 for produce water out, 1.3 be concentrated water discharge mouthful, 2.1 for supplement water water inlet, 2.2 be discharge outlet,
2.3 is recirculated water admission port, 2.4 is recirculated water water return outlet, 5 is flocculation filter；
A is raw water, b to produce water, c for concentrated water, d are draining.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, the present invention is made with reference to example
Further describe, but example is not as a limitation of the invention.
The equipment that following examples are used is specification of equipment purchased in market, main and is：
Electricity expels sub- film device for Hangzhou Ai Er GREEN-SEP-250-8016 type electricity expels sub- film device；
Water quality on-line detecting system opens the type on-line detecting system of disk science and technology cloud track 300 for the U.S.；
Automatic control system opens the type on-line detecting system of disk science and technology cloud track 300 for the U.S.；
In following examples, the structural representation that the electricity improved for circulating water quality expels sub- membrane process device is shown in Fig. 1.
In following examples, the computational methods of circulating water quality index of stability are with reference to all this provinces《Treatment of Industrial Water technology》
(second edition) is calculated.
Embodiment 1
A kind of electricity improved for circulating water quality expels sub- membrane process device, including electricity expels sub- film device 1, recirculated water
System 2, water quality on-line detecting system 3 and automatic control system 4；Electricity expels sub- film device 1 includes water inlet 1.1, product water out
1.2 and concentrated water discharge mouthfuls 1.3, circulation 2 includes that recirculated water admission port 2.3, recirculated water water return outlet 2.4, supplement water enter water
Mouth 2.1 and discharge outlet 2.2；The recirculated water admission port 2.3 of circulation 2 and the shape of recirculated water water return outlet 2.4 of circulation 2
Into closed cycle；The supplement water water inlet 2.1 of product water out 1.2 and circulation 2 that electricity expels sub- film device 1 passes through current-carrying
Pipeline is connected, and circulation 2 is provided with water quality on-line detecting system 3, and water quality on-line detecting system 3 passes through automatic control system
4 and electricity expel sub- film device 1 and connect；
Described water quality on-line detecting system 3, be used to determine circulating water quality pH value, total hardness, total alkalinity, total salinity,
Chlorion and water temperature.
Described automatic control system 4, for monitoring circulating water quality index of stability, automatically controls electricity and expels sub- film device
1 aquifer yield.
A kind of process improved for circulating water quality, concrete technical scheme is as follows：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
Testing result is that electrical conductivity is the μ S/cm of 1200 μ S/cm ＞ 1000, and temporary hardness is 420mg/L ＜ 450mg/L, chlorine
Ion is 130mg/L ＜ 150mg/L, using scheme one, is proceeded as follows：
Raw water a expels sub- film device 1 and carries out desalting processing by water inlet 1.1 into electricity, obtains producing water b and concentrated water c, dense
Water c is discharged through concentrated water discharge mouthful 1.3, is produced water b and is flowed out from water out 1.2 is produced, and water b is produced as circulating water system, by supplement
Water water inlet 2.1 enters circulation 2；
Wherein, when electricity expels sub- 1 desalting processing of film device, technological parameter is：1. producing water ratio 85%；2. salt rejection rate 90%；
(2) the water quality on-line detecting system 3 set in circulation 2, determines the water quality parameter of recirculated water, including pH
Value, total hardness, total alkalinity, total salinity, chlorion and water temperature.
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and lead to
Automatic control system is crossed to control 5.5~6 circulating water quality index of stability；
By calculating, circulating water quality index of stability is 6.5 ＞ 6, after reducing the aquifer yield that electricity expels sub- film device, detection
Circulating water quality index of stability is 5.5.
Embodiment 2
A kind of electricity improved for circulating water quality expels sub- membrane process device, with embodiment 1.
A kind of process improved for circulating water quality, concrete technical scheme is as follows：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
Testing result is that electrical conductivity is the μ S/cm of 1300 μ S/cm ＞ 1000, and temporary hardness is 480mg/L ＞ 450mg/L, chlorine
Ion is 120mg/L ＜ 150mg/L, using scheme one, is proceeded as follows：
Raw water a expels sub- film device 1 and carries out desalting processing by water inlet 1.1 into electricity, obtains producing water b and concentrated water c, dense
Water c is discharged through concentrated water discharge mouthful 1.3, is produced water b and is flowed out from water out 1.2 is produced, and water b is produced as circulating water system, by supplement
Water water inlet 2.1 enters circulation 2；
Wherein, when electricity expels sub- 1 desalting processing of film device, technological parameter is：1. producing water ratio 90%；2. salt rejection rate 75%；
(2) the water quality on-line detecting system 3 set in circulation 2, determines the water quality parameter of recirculated water, including pH
Value, total hardness, total alkalinity, total salinity, chlorion and water temperature.
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and lead to
Automatic control system is crossed to control 5.5~6 circulating water quality index of stability；
By calculating, circulating water quality index of stability is 5.8, in control range.
Embodiment 3
A kind of electricity improved for circulating water quality expels sub- membrane process device, including electricity expels sub- film device 1, recirculated water
System 2, water quality on-line detecting system 3, automatic control system 4 and flocculation filter 5；Electricity expels sub- film device 1 includes water inlet
Mouth 1.1, product water out 1.2 and concentrated water discharge mouthful 1.3, circulation 2 include recirculated water admission port 2.3, recirculated water water return outlet
2.4th, supplement water water inlet 2.1 and discharge outlet 2.2；The recirculated water admission port 2.3 of circulation 2 and following for circulation 2
Ring water water return outlet 2.4 forms closed cycle；The supplement water of product water out 1.2 and circulation 2 that electricity expels sub- film device 1 enters
The mouth of a river 2.1 is connected by liquid-filled pipe, and circulation 2 is provided with water quality on-line detecting system 3, water quality on-line detecting system 3
Sub- film device 1 is expelled by automatic control system 4 and electricity to connect；The water of flocculation filter 5 flows into one end and circulation 2
Discharge outlet 2.2 connect, the water of flocculation filter 5 flows out the water inlet 1.1 that one end expels sub- film device 1 with electricity and is connected；
Described water quality on-line detecting system 3, be used to determine circulating water quality pH value, total hardness, total alkalinity, total salinity,
Chlorion and water temperature.
Described automatic control system 4, for monitoring circulating water quality index of stability, automatically controls electricity and expels sub- film device
Aquifer yield.
A kind of process improved for circulating water quality, concrete technical scheme is as follows：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
Detection is obtained, and raw water electrical conductivity is 1000 μ S/cm, temporary hardness is 450mg/L and chlorion is 150mg/L, is adopted
With following scheme two：
Raw water a enters circulation 2 by recirculated water admission port 2.3, by after circulation, forms draining d, draining d from
The discharge outlet 2.2 of circulation 2 is flowed out, and flocculation filtration pretreatment, flocculation filtration pretreatment are carried out into flocculation filter 5
Afterwards, expelling sub- film device 1 into electricity by water inlet 1.1 carries out desalting processing, obtains producing water b and concentrated water c, and concentrated water c is through concentrated water
Floss hole 1.3 is discharged, and is produced water b and is flowed out from water out 1.2 is produced, and water b is produced as circulating cooling make-up water, by supplementing water water inlet 1.2
Return to circulation 2；
Wherein, when electricity expels sub- 1 desalting processing of film device, technological parameter is 1. producing water ratio 80%；2. salt rejection rate 80%；
(2) the water quality on-line detecting system set in circulation, determines the water quality parameter of recirculated water, specifically includes
PH value, total hardness, total alkalinity, total salinity, chlorion and water temperature.
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and lead to
Automatic control system is crossed to control 5.5~6 circulating water quality index of stability；
By calculating, when circulating water quality index of stability is 5 ＜ 5.5, after increasing the aquifer yield that electricity expels sub- film device, follow
Ring water quality stabilizing index is 6.
Embodiment 4
A kind of electricity improved for circulating water quality expels sub- membrane process device, with embodiment 3.
A kind of process improved for circulating water quality, concrete technical scheme is as follows：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
Detection is obtained, raw water electrical conductivity be the μ S/cm of 980 μ S/cm ＜ 1000, temporary hardness be 400mg/L ＜ 450mg/L and
Chlorion is 130mg/L ＜ 150mg/L, using following scheme two：
Raw water a enters circulation 2 by recirculated water admission port 2.3, by after circulation, forms draining d, draining d from
The discharge outlet 2.2 of circulation 2 is flowed out, and flocculation filtration pretreatment, flocculation filtration pretreatment are carried out into flocculation filter 5
Afterwards, expelling sub- film device 1 into electricity by water inlet 1.1 carries out desalting processing, obtains producing water b and concentrated water c, and concentrated water c is through concentrated water
Floss hole 1.3 is discharged, and is produced water b and is flowed out from water out 1.2 is produced, and water b is produced as circulating cooling make-up water, by supplementing water water inlet 1.2
Return to circulation 2；
Wherein, when electricity expels sub- film device desalting processing, technological parameter is 1. producing water ratio 85%；2. salt rejection rate 75%；
(2) the water quality on-line detecting system set in circulation, determines the water quality parameter of recirculated water, specifically includes
PH value, total hardness, total alkalinity, total salinity, chlorion and water temperature.
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and lead to
Automatic control system is crossed to control 5.5~6 circulating water quality index of stability；
By calculating, when circulating water quality index of stability is 6.5 ＜ 5.5, after reducing the aquifer yield that electricity expels sub- film device,
Circulating water quality index of stability is 6.
Claims (5)
1. a kind of electricity improved for circulating water quality expels sub- membrane process device, it is characterised in that this is used for circulating water quality
The electricity of improvement expels sub- membrane process device and expels sub- film device, circulation, water quality on-line detecting system and automatic including electricity
Control system；Electricity expels sub- film device includes water inlet, product water out and concentrated water discharge mouthful, and circulation is given including recirculated water
The mouth of a river, recirculated water water return outlet, supplement water water inlet and discharge outlet, the recirculated water admission port of circulation and circulation
Recirculated water water return outlet forms closed cycle；The supplement water water inlet of product water out and circulation that electricity expels sub- film device leads to
Liquid-filled pipe connection is crossed, circulation is provided with water quality on-line detecting system, and water quality on-line detecting system is by automatically controlling
System and electricity expel sub- film device connection.
2. the electricity improved for circulating water quality described in claim 1 expels sub- membrane process device, it is characterised in that this is used for
The electricity that circulating water quality improves expels sub- membrane process device, also including flocculation filter；The water of flocculation filter flows into one
End is connected with the discharge outlet of circulation, and the water of flocculation filter flows out the water inlet company that one end expels sub- film device with electricity
Connect.
3. sub- membrane process device is expelled using the electricity described in claim 1 or 2, for the process that circulating water quality improves,
It is characterised in that it includes following steps：
(1) raw water quality is detected, characterization processes parameter includes electrical conductivity, temporary hardness and chlorion；
When any one situation for the μ S/cm of electrical conductivity ＞ 1000, temporary hardness ＞ 450mg/L or chlorion ＞ 150mg/L occur
When, using following scheme one：
Raw water expels sub- film device and carries out desalting processing by water inlet into electricity, obtains producing water and concentrated water, and concentrated water is through concentrated water drainage
Mouth discharge is put, water is produced from water out outflow is produced, water is produced as circulating water system, circulating water is entered by supplementing water water inlet
System；
As electrical conductivity≤1000 μ S/cm, temporary hardness≤450mg/L and chlorion≤150mg/L, three kinds of situations occur simultaneously
When, using following scheme two：
Raw water enters circulation by recirculated water admission port, by after circulation, forms draining, and draining is from circulation
Discharge outlet is flowed out, and flocculation filtration pretreatment is carried out into flocculation filter, after flocculation filtration pretreatment, is entered by water inlet
Electricity expels sub- film device and carries out desalting processing, obtains producing water and concentrated water, and concentrated water is discharged through concentrated water discharge mouthful, produces water from product water out
Outflow, produces water as circulating cooling make-up water, and circulation is returned by supplementing water water inlet；
(2) the water quality on-line detecting system set in circulation, determines the water quality parameter of recirculated water, specifically includes pH
Value, total hardness, total alkalinity, total salinity, chlorion and water temperature；
(3) water quality parameter measured using water quality on-line detecting system, is calculated circulating water quality index of stability, and by certainly
Autocontrol system controls 5.5~6 circulating water quality index of stability；
As circulating water quality index of stability ＞ 6, the aquifer yield that electricity expels sub- film device is reduced, until circulating water quality stably refers to
Number is 5.5~6；
As circulating water quality index of stability ＜ 5.5, increase the aquifer yield that electricity expels sub- film device, until circulating water quality stabilization
Index is 5.5~6.
4. it is as claimed in claim 3 to be used for the process that circulating water quality improves, it is characterised in that described scheme one
In, when electricity expels sub- film device desalting processing, technological parameter is：1. producing water ratio 85%~90%；2. salt rejection rate 75%~90%.
5. it is as claimed in claim 3 to be used for the process that circulating water quality improves, it is characterised in that described scheme two
In, when electricity expels sub- film device desalting processing, technological parameter is：1. producing water ratio 80%~85%；2. salt rejection rate 75%~80%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114044585A (en) * | 2021-11-06 | 2022-02-15 | 江西蓝星星火有机硅有限公司 | Sewage treatment method |
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| CN101870530A (en) * | 2009-04-22 | 2010-10-27 | 北京新金应利科技发展有限公司 | Method for treating and recycling circulating wastewater |
| CN104710054A (en) * | 2015-03-23 | 2015-06-17 | 苏州鑫泽雅节能设备有限公司 | Zero-emission desalting system |
| CN105347591A (en) * | 2015-12-09 | 2016-02-24 | 青岛海大北方节能环保有限公司 | Process for preparing direct drinking water through electric drive membrane and equipment of process |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870530A (en) * | 2009-04-22 | 2010-10-27 | 北京新金应利科技发展有限公司 | Method for treating and recycling circulating wastewater |
| CN104710054A (en) * | 2015-03-23 | 2015-06-17 | 苏州鑫泽雅节能设备有限公司 | Zero-emission desalting system |
| CN105347591A (en) * | 2015-12-09 | 2016-02-24 | 青岛海大北方节能环保有限公司 | Process for preparing direct drinking water through electric drive membrane and equipment of process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114044585A (en) * | 2021-11-06 | 2022-02-15 | 江西蓝星星火有机硅有限公司 | Sewage treatment method |
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