CN109991385A - A kind of water quality detection system - Google Patents
A kind of water quality detection system Download PDFInfo
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- CN109991385A CN109991385A CN201711486787.7A CN201711486787A CN109991385A CN 109991385 A CN109991385 A CN 109991385A CN 201711486787 A CN201711486787 A CN 201711486787A CN 109991385 A CN109991385 A CN 109991385A
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- electric field
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- positive plate
- heavy metal
- metal ion
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 238000001514 detection method Methods 0.000 title claims abstract description 82
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 64
- 238000000926 separation method Methods 0.000 claims abstract description 40
- 239000005416 organic matter Substances 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 7
- 230000005684 electric field Effects 0.000 claims description 124
- 238000007689 inspection Methods 0.000 claims 1
- 150000002500 ions Chemical class 0.000 abstract description 65
- 240000002853 Nelumbo nucifera Species 0.000 abstract description 20
- 235000006508 Nelumbo nucifera Nutrition 0.000 abstract description 20
- 235000006510 Nelumbo pentapetala Nutrition 0.000 abstract description 20
- 150000001768 cations Chemical class 0.000 abstract description 15
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 5
- 229910001424 calcium ion Inorganic materials 0.000 description 5
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 4
- 239000012491 analyte Substances 0.000 description 3
- 229910001422 barium ion Inorganic materials 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- XDFCIPNJCBUZJN-UHFFFAOYSA-N barium(2+) Chemical compound [Ba+2] XDFCIPNJCBUZJN-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- NEMFQSKAPLGFIP-UHFFFAOYSA-N magnesiosodium Chemical compound [Na].[Mg] NEMFQSKAPLGFIP-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1813—Specific cations in water, e.g. heavy metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1826—Organic contamination in water
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N2001/4038—Concentrating samples electric methods, e.g. electromigration, electrophoresis, ionisation
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of water quality detection systems, including being located at the organic matter detection sensor for detecting Organic substance in water content；It is characterized by also including can detect in water whether the heavy metal ion detection device containing heavy metal ion.Compared with prior art, the present invention has the advantages that Organic substance in water content can not only be detected, also pass through setting heavy metal ion detection device, cation more different than lotus in water is subjected to separation shunting, compare lotus further according to heavy metal ion, the detection of TDS value is carried out to one of water for shunting subexit, can detect in water whether contain heavy metal ion with accurate and effective.
Description
Technical field
The present invention relates to a kind of water quality detection systems.
Background technique
The pollution of water quality at present is concentrated mainly on 2 major parts, and a major class is inorganic concentration of heavy metal ion, another major class
It is organic cod concentration.Measurement Organic substance in water content generally passes through organic matter sensor and is detected at present, and to being in water
It is no substantially to be judged by TDS value in measurement water mostly containing heavy metal ion, but TDS value cannot accurately show be in water
It is no to contain heavy metal ion.
Summary of the invention
The technical problem to be solved by the present invention is to for the above-mentioned prior art provide one kind can not only detect it is organic in water
Object content, moreover it is possible to more sensitively judge in water whether the water quality detection system containing heavy metal ion.
The technical scheme of the invention to solve the technical problem is: a kind of water quality detection system, including be located at and use
In the organic matter detection sensor of detection Organic substance in water content；Whether it is characterized by also including can detect in water containing weight
The heavy metal ion detection device of metal ion, the heavy metal ion detection device include
Separating flow tract, separating flow tract include entrance and exit；
Attached collection electric field positive plate is arranged in separating flow tract, close to the entrance of separating flow tract, with the first external stabilized power
Anode electrical connection；
Attached collection electric field negative electrode tab is arranged in separating flow tract, close to the entrance of separating flow tract, with the first external stabilized power
Cathode electrical connection, and with attached collection electric field positive plate face and parallel interval is arranged, attached collection electric field positive plate and attached collection electric field are born
The distance between pole piece is d；
Electric field positive plate is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, is existed with attached collection electric field negative electrode tab
It on same straight line, is connect with the anode of the second external stabilized power, and between D between the rear end of attached collection electric field negative electrode tab
Away from D is greater than 0；First external stabilized power is pulsed voltage of voltage regulation.
Electric field negative electrode tab is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, is existed with attached collection electric field positive plate
It on same straight line, is connect with the cathode of the second external stabilized power, and between D between the rear end of attached collection electric field positive plate
Away from D is greater than 0；
Separating flow tract exports the split-flow baffles for being equipped with N block and separating the setting of electric field positive plate parallel interval, to will divide
Outlet from runner is divided into N+1 shunting subexit, and the value of N is the natural number more than or equal to 2；Most intermediate one will be located at
It shunts subexit or shunts the water of subexit outflow as heavy metal ion positioned at any of most intermediate two shuntings subexit
First water outlet of detection device；It is mixed the water that subexit flows out is shunted from remaining, as heavy metal ion detection device
Second water outlet；
And the TDS sensor for detecting TDS value in the first water outlet, using the detected value of TDS sensor as being in water
The no foundation containing heavy metal ion.
The distance between N block split-flow baffles can be identical, i.e., the outlet of separating flow tract is divided into N+1 by N block split-flow baffles
The identical shunting subexit of size.
The distance between N block split-flow baffles can also be different, preferably, the N=2, wherein first piece of split-flow baffles
With separate the distance between electric field positive plate are as follows:Wherein K is less than 1 greater than 0
Constant, voltage of the U between the second external stabilized power positive and negative anodes, l are separation electric field positive plate or separation electric field negative electrode tab
Length, v are the water velocity that water flows through separating flow tract, and d is the distance between separation electric field positive plate and separation electric field negative electrode tab；Range be 1/15~1/8；Second piece of split-flow baffles with separate the distance between electric field positive plate are as follows:Range be 1/45~1/40；It will be from first piece of split-flow baffles and second
First water outlet of the water for shunting subexit outflow formed between block split-flow baffles as detection of heavy metal ion separator；It will
It shunts the water that subexit flows out from other two to be mixed, the second water outlet as detection of heavy metal ion separator；This
Sample, if containing silver ion, cadmium ion, barium ions, mercury ion, lead ion etc. in water than lotus 1/15~1/8 to 1/45~1/
Metal cation between 40 can then be detected by the TDS value of the first water outlet, if TDS value is greater than preset threshold, by
Waste water of first water outlet as water purifier, the normal water outlet by the second water outlet as water purifier.
As another preferred embodiment, the N=3, wherein first piece of split-flow baffles with separate the distance between electric field positive plate
Are as follows:Wherein K be less than 1 be greater than 0 constant, U be the second external stabilized power just
Voltage between cathode, l are the length for separating electric field positive plate or separating electric field negative electrode tab, and v is the water that water flows through separating flow tract
Flow velocity degree, d are the distance between separation electric field positive plate and separation electric field negative electrode tab；Range be 1/15~1/8；Second piece
Split-flow baffles with separate the distance between electric field positive plate are as follows:Range
It is 1/28~1/20；Third block split-flow baffles with separate the distance between electric field positive plate are as follows:Range are as follows: 1/45~1/40, will be from second piece of split-flow baffles and third
First water outlet of the water for shunting subexit outflow formed between block split-flow baffles as detection of heavy metal ion separator；It will
It shunts the water that subexit flows out from its excess-three to be mixed, the second water outlet as detection of heavy metal ion separator；This
Sample, the metal cation than lotus between 1/28~1/20 to 1/45~1/40 such as mercury ion, lead ion, then go out by first
The TDS value of water can detect, if TDS value is greater than preset threshold, waste water by the first water outlet as water purifier, by second
It is discharged the normal water outlet as water purifier.
For effectively attached collection and it is released effectively ion, in the pulsed voltage of voltage regulation of first external stabilized power, is added
The pressure time, which is less than, is not pressurized the time, i.e., the duty ratio of pulsed voltage of voltage regulation is less than 50%.
In view of attached collection electric field and separate electric field voltage it is excessive when, the electrolysis of water is easy to cause, in order not to as making water
Electrolysis, for first external stabilized power in pressurization, the voltage between positive and negative anodes is less than or equal to 2V；Second external stabilized power
Voltage between positive and negative anodes is less than or equal to 2V.
Preferably, separation electric field cathode leaf length it is identical as electric field anode leaf length is separated, D with separate electric field negative electrode tab
Length is identical.
It improves again, the entrance of the separating flow tract is arranged before attached collection electric field positive plate front end and attached collection electric field negative electrode tab
The entrance of the separating flow tract is formed between end or attached collection electric field positive plate front end and attached collection electric field negative electrode tab front end；
The outlet of the separating flow tract is formed between separation electric field positive plate rear end and separation electric field negative electrode tab rear end.
Improve again, the invention also includes with further include in organic matter detection sensor and heavy metal ion detection device
The display screen of TDS sensor electrical connection.
It improves again, the water inlet of water quality detection system is connected to the entrance of organic matter detection sensor, and organic analyte detection passes
The outlet of sensor is connected to the entrance of flowmeter, the entrance of separating flow tract in the outlet of flowmeter and heavy metal ion detection device
Connection, flowmeter are also electrically connected with display screen.
It improves again, the 2nd TDS sensor is also connected between the outlet of organic matter detection sensor and the entrance of flowmeter,
2nd TDS sensor is also electrically connected with display screen.
Compared with the prior art, the advantages of the present invention are as follows: Organic substance in water content can not only be detected, setting weight is also passed through
Cation more different than lotus in water is carried out separation shunting, further according to heavy metal ion than lotus, to it by metal ion detection device
In one shunting subexit water carry out the detection of TDS value, can detect in water whether contain heavy metal ion with accurate and effective.
Detailed description of the invention
Fig. 1 is the schematic diagram of water quality detection system in the embodiment of the present invention one.
Fig. 2 is the schematic diagram of heavy metal ion detection device in the embodiment of the present invention one.
Fig. 3 is the schematic diagram of heavy metal ion detection device in the embodiment of the present invention two.
Fig. 4 is the schematic diagram of heavy metal ion detection device in the embodiment of the present invention three.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Water quality detection system as shown in Figure 1, including being located at organic analyte detection biography for detecting Organic substance in water content
Sensor 8, and can detect in water whether the heavy metal ion detection device containing heavy metal ion, with organic matter detection sensor 8
And the display screen 9 that the TDS sensor 7 in heavy metal ion detection device is electrically connected；Wherein the water inlet of water quality detection system with
The entrance of organic matter detection sensor is connected to, and the outlet of organic matter detection sensor is connected to the entrance of flowmeter 10, flowmeter
10 outlet is connected to the entrance of separating flow tract in heavy metal ion detection device, and flowmeter 10 is also electrically connected with display screen 9；Have
The 2nd TDS sensor 11 can also be connected between the outlet of machine analyte detection sensor and the entrance of flowmeter, the 2nd TDS is passed
Sensor 11 is also electrically connected with display screen 9.
The structure of organic matter detection sensor uses prior art conventional structure, uses Patent No. in the present embodiment
201720316550.3 structure described in, and will not be described here in detail.
In the present embodiment, heavy metal ion detection device includes, shown in Figure 2
Separating flow tract 1, separating flow tract include entrance and exit；
Attached collection electric field positive plate 2 is arranged in separating flow tract, close to the entrance of separating flow tract, with the first outside pressure stabilizing electricity
The anode electrical connection in source；
Attached collection electric field negative electrode tab 3 is arranged in separating flow tract, close to the entrance of separating flow tract, with the first outside pressure stabilizing electricity
The cathode in source is electrically connected, and with attached collection electric field positive plate face and parallel interval setting, attached collection electric field positive plate and attached collection electric field
The distance between negative electrode tab is d；First external stabilized power is pulsed voltage of voltage regulation；
Electric field positive plate 4 is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field negative electrode tab
On the same line, it is connect with the anode of the second external stabilized power, and there is D between the rear end of attached collection electric field negative electrode tab
Spacing, D are greater than 0；
Electric field negative electrode tab 5 is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field positive plate
On the same line, it is connect with the cathode of the second external stabilized power, and there is D between the rear end of attached collection electric field positive plate
Spacing, D are greater than 0；
The outlet of separating flow tract is equipped with the split-flow baffles 6 of N block uniform intervals setting parallel with electric field negative electrode tab 5 is separated, from
And the outlet of separating flow tract is divided into the identical shunting subexit of N+1 amount of capacity, the value of N is the nature more than or equal to 2
Number will be located at a most intermediate shunting subexit or positioned at any of most intermediate two shuntings subexit shunting subexit stream
First water outlet of the water out as detection of heavy metal ion separator；It is mixed the water that subexit flows out is shunted from remaining
It closes, the second water outlet as detection of heavy metal ion separator；
And the TDS sensor 7 for detecting TDS value in the first water outlet, using the detected value of TDS sensor as being in water
The no foundation containing heavy metal ion, as long as the detected value non-zero of TDS sensor, shows to contain heavy metal ion in water.
In the present embodiment, N=3 will extremely separate the split-flow baffles between electric field positive plate from separation electric field negative electrode tab successively
First piece of split-flow baffles, second piece of split-flow baffles, third block split-flow baffles are denoted as, it will be from second piece of split-flow baffles and third block point
First water outlet of the water for shunting subexit outflow formed between stream partition as detection of heavy metal ion separator；Will from its
The water that excess-three shunts subexit outflow is mixed, the second water outlet as detection of heavy metal ion separator；.
The working principle of heavy metal ion detection device are as follows:
Water enters from the entrance of separating flow tract, and under the action of attached collection electric field, the attached collection of cation in water is in attached collection electric field
Near negative electrode tab, the attached collection of anion in water is near attached collection electric field positive plate；Attached collection electric field uses impulse type voltage, making alive
When, attached collection is carried out to the ion in water, allows attached collection in the attached yin-yang collected near electric field positive/negative plate (when power-off) when voltage is not added
Enter the separation electric field of subsequent ion after plasma diffusing W,Mo；As long as the intensity of attached collection electric field, burst length, the spacing of pole piece, water flow
Speed is matched, and the attached collection of separation of progress zwitterion that can be effective reaches the initial position one of all charged ions
Cause (cation is near negative electrode tab)；Since different ions has different charges and different atomic weight, in normal water
Most of main cation is calcium (Ca2+ atomic weight be 20), magnesium (Mg2+ ion atoms amount be 20), sodium (Na+ atomic weight
For 11), there are also some other micro cations；But for especially in the water of heavy metal pollution, wrapping in the water of some pollutions
A large amount of heavy metal ion is contained, such as lead (Pb2+ atomic weight be 82), mercury (Hg2+ atomic weight be 80), silver (Ag2+ atomic weight
For 47), barium (Ba2+ atomic weight be 56), cadmium (Cd2+ atomic weight 48) etc. be.Different ions has different ratio lotuses, such as calcium
Ion ratio lotus is 2/20, cadmium ion 2/48, lead ion 2/82, therefore the ratio lotus of heavy metal ion is relatively small, especially
Lead, mercury etc., and cationic such as calcium and magnesium sodium common in general water compare than lotus it is larger.In identical separation electric field, phase
In the case of initial velocity, the mobile distance relation of the ion of not year-on-year lotus and the distance than proportional relationship, that is, moved than lotus and
Q/m is related, and under phase same electric field, the ion movement speed smaller than lotus is slow, as long as ensuring the heavy metal cation smaller than lotus attached collection
Near pole piece, it is ensured that bigger than lotus as calcium ions and magnesium ions also completely attached collection achieve the effect that complete attached collection on positive plate；
Consider effectively attached collection and be released effectively the factor of ion, the time (the attached collection of making alive) of the attached collection of pulsed power supplies, < release time was (no
Making alive)；Consider that too high voltages are easy to cause the electrolysis of water, therefore pays the utmost attention to the attached collection voltage of electric field and separation electric field of input
Voltage cannot be excessive, should be typically lower than 2V or less.
Identical electric field is different different Ion transfer abilities, is mainly determined according to different charged ratios,
Under identical uniform electric field, ion enters separation electric field under the drive of water flow, due to the effect of attached collection electric field before, so that
Cation is all near attached collection electric field negative electrode tab, so that the primary condition of cation is consistent, under the action of separating electric field, in water
Different ions can be migrated under the action of separating electric field, anion is moved to separation electric field positive plate, and cation can be to
The movement of electric field negative electrode tab is separated, but due to different ratio lotuses, the offset distance of different ions is not also identical.Calcium ions and magnesium ions exist in water
It being reached near ion isolation electric field negative electrode tab when near water outlet, for heavy metal ion due to smaller than lotus, movement speed is slow, because
This heavy metal ion has also been in elsewhere, by the diversion channel of water outlet, is shunted to water, so as to in water not
Same zwitterion is separated, by going out shunting formed between second piece of split-flow baffles and third block split-flow baffles
First water outlet of the water of mouth outflow as detection of heavy metal ion separator；The water that subexit flows out will be shunted from its excess-three
It is mixed, the second water outlet as detection of heavy metal ion separator, so that it may simultaneously by most of separation of heavy metal ions
It detected, pass through the TDS value in the first water outlet of detection at this time, so that it may judge whether contain heavy metal ion in water；Certainly,
Can also by the way that the detected value of TDS sensor and the value of the 2nd TDS sensor are compared, as long as two values are different,
It may also indicate that and contain heavy metal ion in water, and shown by display screen.Attached collection electric field is to ion isolation in order to prevent
The influence of electric field, 2 electric fields need a certain distance, i.e., the front end of separation electric field positive plate is not and after attached collection electric field negative electrode tab
Between end have D spacing, D be greater than 0, separation electric field cathode leaf length it is identical with electric field anode leaf length is separated, D preferably with divide
It is identical from electric field cathode leaf length.
Embodiment two
What is different from the first embodiment is that three pieces of split-flow baffles are not evenly spaced on, it is shown in Figure 3, wherein
First piece of split-flow baffles with separate the distance between electric field positive plate are as follows:
Wherein K is the constant for being greater than 0 less than 1, and voltage of the U between the second external stabilized power positive and negative anodes, l is separation electric field positive plate
Or the length of separation electric field negative electrode tab, v are the water velocity that water flows through separating flow tract, d is separation electric field positive plate and separation electricity
The distance between field negative electrode tab；Range be 1/15~1/8；In this way, calcium ion, sodium ion etc. are than lotus 0 to 1/15~1/
The shunting subexit stream that metal cation between 8 can be formed between first piece of split-flow baffles and separating flow tract inner wall
Out；
Second piece of split-flow baffles with separate the distance between electric field positive plate are as follows:
Range be 1/28~1/20；In this way, the metal than lotus between 1/15~1/8 to 1/28~1/20 such as silver ion, cadmium ion
The shunting subexit outflow that cation can be formed between first piece of split-flow baffles and second piece of split-flow baffles；
Third block split-flow baffles with separate the distance between electric field positive plate are as follows:
Range are as follows: 1/45~1/40；In this way, barium ions, lead ion, mercury ion etc. than lotus 1/28~1/20 to 1/45~1/40 it
Between metal cation can be formed between second piece of split-flow baffles and third block split-flow baffles shunting subexit outflow.
At this point, the water for shunting subexit outflow formed between second piece of split-flow baffles and third block split-flow baffles is made
For the first water outlet of heavy metal ion detection device, whether heavy metal ion can be contained in more accurate effectively detection water.
Embodiment three
Unlike embodiment two, split-flow baffles are shown in Figure 4 equipped with two pieces, in which:
First piece of split-flow baffles with separate the distance between electric field positive plate are as follows:
Wherein K is the constant for being greater than 0 less than 1, and voltage of the U between the second external stabilized power positive and negative anodes, l is separation electric field positive plate
Or the length of separation electric field negative electrode tab, v are the water velocity that water flows through separating flow tract, d is separation electric field positive plate and separation electricity
The distance between field negative electrode tab；Range be 1/15~1/8；
Second piece of split-flow baffles with separate the distance between electric field positive plate are as follows:
Range be 1/45~1/40.
At this point, the water for shunting subexit outflow formed between first piece of split-flow baffles and second piece of split-flow baffles is made
For the first water outlet of detection of heavy metal ion separator, also whether heavy metal ion can be contained in more accurate effectively detection water.
Claims (10)
1. a kind of water quality detection system, including being located at the organic matter detection sensor for detecting Organic substance in water content；It is special
Sign is: further include can detect in water whether the heavy metal ion detection device containing heavy metal ion, heavy metal ion inspection
Surveying device includes
Separating flow tract, separating flow tract include entrance and exit；
Attached collection electric field positive plate is arranged in separating flow tract, close to the entrance of separating flow tract, just with the first external stabilized power
Pole electrical connection；
Attached collection electric field negative electrode tab is arranged in separating flow tract, negative with the first external stabilized power close to the entrance of separating flow tract
Pole electrical connection, and with attached collection electric field positive plate face and parallel interval setting, attached collection electric field positive plate and attached collection electric field negative electrode tab
The distance between be d；
Electric field positive plate is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field negative electrode tab same
It on straight line, is connect with the anode of the second external stabilized power, and there is D spacing, D between the rear end of attached collection electric field negative electrode tab
Greater than 0；First external stabilized power is pulsed voltage of voltage regulation.
Electric field negative electrode tab is separated, is arranged in separating flow tract, close to the outlet of separating flow tract, with attached collection electric field positive plate same
It on straight line, is connect with the cathode of the second external stabilized power, and there is D spacing, D between the rear end of attached collection electric field positive plate
Greater than 0；
The outlet of separating flow tract is equipped with N block and the split-flow baffles for separating the setting of electric field positive plate parallel interval, so that separation be flowed
The outlet in road is divided into N+1 shunting subexit, and the value of N is the natural number more than or equal to 2；A most intermediate shunting will be located at
Subexit shunts the water of subexit outflow as detection of heavy metal ion positioned at any of most intermediate two shuntings subexit
First water outlet of device；The water that subexit flows out will be shunted from remaining to mix, the as heavy metal ion detection device
Two water outlets；
And the TDS sensor for detecting TDS value in the first water outlet, whether contain using the detected value of TDS sensor as in water
There is the foundation of heavy metal ion.
2. water quality detection system according to claim 1, it is characterised in that: the N=2, wherein first piece of split-flow baffles
With separate the distance between electric field positive plate are as follows:Wherein K is less than 1 greater than 0
Constant, voltage of the U between the second external stabilized power positive and negative anodes, l are separation electric field positive plate or separation electric field negative electrode tab
Length, v are the water velocity that water flows through separating flow tract, and d is the distance between separation electric field positive plate and separation electric field negative electrode tab；Range be 1/15~1/8；Second piece of split-flow baffles with separate the distance between electric field positive plate are as follows: Range be 1/45~1/40；It will be from first piece of split-flow baffles and second piece
First water outlet of the water for shunting subexit outflow formed between split-flow baffles as heavy metal ion detection device；Will from remaining
Two water for shunting subexit outflow are mixed, the second water outlet as heavy metal ion detection device.
3. water quality detection system according to claim 1, it is characterised in that: the N=3, wherein first piece of split-flow baffles
With separate the distance between electric field positive plate are as follows:Wherein K is less than 1 greater than 0
Constant, voltage of the U between the second external stabilized power positive and negative anodes, l are separation electric field positive plate or separation electric field negative electrode tab
Length, v are the water velocity that water flows through separating flow tract, and d is the distance between separation electric field positive plate and separation electric field negative electrode tab；Range be 1/15~1/8；Second piece of split-flow baffles with separate the distance between electric field positive plate are as follows: Range be 1/28~1/20；Third block split-flow baffles with separating electric field just
The distance between pole piece are as follows: Range are as follows: 1/45~1/40, will be from second
The water for shunting subexit outflow formed between block split-flow baffles and third block split-flow baffles is as heavy metal ion detection device
First water outlet；The water that subexit flows out will be shunted from its excess-three to mix, the as heavy metal ion detection device
Two water outlets.
4. water quality detection system according to claim 1, it is characterised in that: the pulsed of first external stabilized power
In voltage of voltage regulation, pressing time, which is less than, is not pressurized the time, i.e., the duty ratio of pulsed voltage of voltage regulation is less than 50%.
5. water quality detection system according to claim 1, it is characterised in that: first external stabilized power is pressurizeing
When, the voltage between positive and negative anodes is less than or equal to 2V；Voltage between second external stabilized power positive and negative anodes is less than or equal to 2V.
6. water quality detection system according to claim 1, it is characterised in that: separation electric field cathode leaf length with separate electric field
Positive leaf length is identical, and D is identical as electric field cathode leaf length is separated.
7. water quality detection system according to claim 1, it is characterised in that: the entrance of the separating flow tract is arranged in attached collection
Between electric field positive plate front end and attached collection electric field negative electrode tab front end or attached collection electric field positive plate front end and attached collection electric field are negative
The entrance of the separating flow tract is formed between pole piece front end；Separate electric field positive plate rear end and separation electric field negative electrode tab rear end
Between form the outlet of the separating flow tract.
8. water quality detection system described in claim according to claim 1~any one of 7, it is characterised in that: further include
With further include the display screen being electrically connected with the TDS sensor in organic matter detection sensor and heavy metal ion detection device.
9. water quality detection system according to claim 8, it is characterised in that: the water inlet and organic matter of water quality detection system
The entrance of detection sensor is connected to, and the outlet of organic matter detection sensor be connected to the entrance of flowmeter, the outlet of flowmeter and
The entrance connection of separating flow tract, flowmeter are also electrically connected with display screen in heavy metal ion detection device.
10. water quality detection system according to claim 8, it is characterised in that: the outlet of organic matter detection sensor and stream
The 2nd TDS sensor is also connected between the entrance of meter, the 2nd TDS sensor is also electrically connected with display screen.
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| CN201711486787.7A CN109991385B (en) | 2017-12-29 | 2017-12-29 | Water quality detection system |
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| CN1721337A (en) * | 2005-05-18 | 2006-01-18 | 天津大学 | Electromigration unidirectional osmosis method for desalination of water |
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