CN106336041A - Reverse osmosis and first-class resin combined device for extracting fulvic acid in fresh water - Google Patents
Reverse osmosis and first-class resin combined device for extracting fulvic acid in fresh water Download PDFInfo
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- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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Abstract
The invention provides a reverse osmosis and first-class resin combined device for extracting fulvic acid in fresh water. The device comprises a raw water supply unit, a pretreatment unit, a reverse osmosis concentration unit, a power of hydrogen regulating unit, a water tank, a main control system, a filtration and purification unit and a fulvic acid extraction unit, wherein the fulvic acid extraction unit includes an organic reagent tank, a leaching device and an adsorption and enrichment device, the inlet of the adsorption and enrichment device is connected withthe outlet of the organic reagent tank and the outlet of the leaching device, and a liquid discharging switch is arranged at the bottom of the adsorption and enrichment device. The adsorption and enrichment device comprises an adsorption column and a packing, wherein the packing is arranged in the adsorption column and is one or more of XAD-8 resin, DAX-8 resin and XAD resin-7. The high-concentration fulvic acid can be obtained through enrichment, concentration and purification of the fulvic acid extraction unit. The reverse osmosis and first-class resin combined device for extracting fulvic acid in fresh water is simple in structure, high in automation degree and convenient to operate.
Description
Technical field
The present invention relates to the dress of fresh water fulvic acid is extracted with a grade resins combination in concentration technique field, more particularly, to reverse osmosiss
Put.
Background technology
The class natural macromolecular organic admixture that DOM is can be 0.45 μm of filter membrane by aperture, it is originated
In animals and plants secretions and its Residue decay product, the Nomenclature Composition and Structure of Complexes changes with space-time and source.In poisons in freshwater, dissolving
Organic matter has important ecological and environmental activity.DOM mainly includes acidic materials such as fulvic acid, humic acid and many
The small-molecule substances such as peptide, polysaccharide, aminoacid.Wherein, the small-molecule substance such as polypeptide, polysaccharide, aminoacid, proportion little it is easy to
By aquatile using and decompose.The acidic materials molecular weight such as fulvic acid it is difficult to degraded, is in fresh water dissolution organic matter greatly
Main component, by extensive concern.Wherein, dissolving fulvic acid is widely present in various natural water bodies, can be under any ph is adjusted
Solvable, animal migration is strong, and the Transport And Transformation of pollutant in water body is had a major impact.Therefore carry out research to dissolving fulvic acid to help
In understanding heavy metal and hazardous contaminant environmental behaviour, the improvement further to water treatment technology also has very important reason
Value and realistic meaning.The concentration dissolving fulvic acid in poisons in freshwater is low, and generally 1-10mg/l is it is difficult to separating and being enriched with.
Setting up dissolving fulvic acid extracting method and device in poisons in freshwater is one of bottleneck of fulvic acid research.
Reverse osmosis technology is in the presence of higher than solution osmotic pressure, according to macromolecular substances can not through semipermeable membrane and incite somebody to action
These materials and water are separated.The membrane aperture of reverse osmosis membrane is very little, therefore, it is possible to effectively go dissolved salts in eliminating water,
Colloid, microorganism, Organic substance etc..It is high that reverse osmosiss have a salt rejection rate, and mechanical strength is big and long service life, chemistry or biochemical tolerance
The advantages of property is strong.The present invention utilizes fulvic acid in reverse osmosis technology initial concentration poisons in freshwater.
Chinese invention patent (201510586450.8: the fractional extraction method of fulvic acid subfraction in a kind of water body) is open
Fulvic acid subgroup portioning fractional extraction method in a kind of water body, described fractional extraction method comprises the steps:
Step a: water sample acidifying and filtration:
Adjust water body example ph=0.5-1.5 with alkali and acid, with membrane filtration, gained filtrate is labeled as drainage body sample
Product；
Step b: the resin absorption of water body fulvic acid:
Filtered water body example and resin column has been passed through with the flow velocity of 10-15 times of column volume/h, discarded effluent；
Step c: fulvic acid subfraction Step gragient elution:
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=2, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=2 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 1；
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=3, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=3 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 2；
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=4, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=4 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 3；
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=5, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=5 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 4；
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=6, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=6 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 5；
With the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin column of ph=7, often collect 2-
50ml effluent, is measured with specific wavelength ultraviolet/visible light, the ultraviolet/visible light absorption value first increases and then decreases of effluent,
When effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, the sodium pyrophosphate buffer solution stopping ph=7 drenching
Washed journey, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant, is labeled as in richness
Sour subfraction 6；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=8
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the sodium pyrophosphate of ph=8
Buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant,
It is labeled as fulvic acid subfraction 7；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=9
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the sodium pyrophosphate of ph=9
Buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant,
It is labeled as fulvic acid subfraction 8；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=10
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the pyrophosphoric acid of ph=10
Sodium buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant
Liquid, is labeled as fulvic acid subfraction 9；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=11
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the pyrophosphoric acid of ph=11
Sodium buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant
Liquid, is labeled as fulvic acid subfraction 10；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=12
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the pyrophosphoric acid of ph=12
Sodium buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant
Liquid, is labeled as fulvic acid subfraction 11；
Under nitrogen protection, with the flow velocity of 5-10 times of column volume/h, with the sodium pyrophosphate buffer solution drip washing resin of ph=13
Post, often collects 2-50ml effluent, is measured with specific wavelength ultraviolet/visible light, and the ultraviolet/visible light absorption value of effluent is first
Reduce after increase, when effluent ultraviolet/visible light absorption value is less than the 0.5% of maximum light absorption value, stop the pyrophosphoric acid of ph=13
Sodium buffer solution lessivation, merges effluent, is acidified to ph=1 immediately, after stirring 4h, stands 24h, centrifugation obtains supernatant
Liquid, is labeled as fulvic acid subfraction 12；
Step d: fulvic acid subfraction purification:
To fulvic acid subfraction 1 to fulvic acid subfraction 12, altogether in 12 parts of solution, it is separately added into Fluohydric acid., makes solution
Middle hydrogen
Fluoric acid concentration is 0.3mol/l, continuously stirred 4h, and after standing 24h, centrifugation obtains 12 parts of supernatant, respectively labelling
For purification fulvic acid subfraction 1 to purification fulvic acid subfraction 12；
Step e: water body fulvic acid subfraction desalination and solidification:
By purification fulvic acid subfraction 1 to purification fulvic acid subfraction 12,12 parts of solution are respectively with 3-5 times of cylinder altogether
The flow velocity of long-pending/h passes through resin column, discards effluent；
After the completion of every part of purification fulvic acid subfraction adsorbs on resin column, then respectively with 0.65 times of column volume deionized water
With the flow velocity of 10-15 times of column volume/h, rinse resin column, discard effluent；Then with 1 times of column volume 0.1mol/l sodium hydroxide
Solution and 2 times of column volume deionized waters, with the flow velocity of 3-5 times of column volume/h successively drip washing resin column, collect effluent；To receive again
The effluent of collection is swapped by the hydrogen type cation exchange resin of hydrion saturation, and the effluent finally giving is as salt-free
Fulvic acid subfraction；
Operate successively, the salt-free fulvic acid subfraction that every part of purification fulvic acid subfraction is obtained is respectively labeled as salt-free richness
In sour subfraction 1 to salt-free fulvic acid subfraction 12；
Then again by the lyophilization respectively of salt-free fulvic acid subfraction 1 to salt-free fulvic acid subfraction 12,12 are finally given
Part solid-state fulvic acid subfraction classification sample, is respectively labeled as solid-state fulvic acid subfraction 1 to solid-state fulvic acid subfraction 12.
Foregoing invention can obtain the higher classification fulvic acid subfraction of purity by grading extraction, is easy to natural to water body
Organic Quality Research, but this invention depends primarily on manual operations to the research of fulvic acid, does not also have the dress of complete set
Put and realize separating fulvic acid in natural water, and fulvic acid is extracted and purification, and exploitativeness is not good.
Content of the invention
In order to realize being separated from the water high-purity fulvic acid, the invention provides reverse osmosiss and grade resins combination extraction are light
The device of water fulvic acid, effectively can easily extract required fulvic acid.
In order to solve above-mentioned technical problem, the present invention provides reverse osmosiss and a grade resins combination to extract the dress of fresh water fulvic acid
Put, including raw water feed unit, pretreatment unit, reverse osmosis concentration unit, acid-base value adjustment unit, water tank, general control system,
Filtration, purification unit and fulvic acid extraction unit；
Described fulvic acid extraction unit includes organic chemical tank, elution device and adsorption and enrichment device；Described adsorption and enrichment
The entrance of device is connected with the outlet of described organic chemical tank, the outlet of described elution device, and adsorption and enrichment bottom of device is provided with
Liquid waste cock；
Described adsorption and enrichment device includes adsorption column and filler, and in described adsorption column, described filler is described filler
One or more of xad-8 resin, dax-8 resin and xad-7 resin.
Preferably, raw water feed unit adopts self-priming water supplying pump, and raw water is mainly the fresh water water such as rivers and lakes and subsoil water
Body, within 1000ntu, within 1000mg/l, electrical conductivity value exists the value of dissolved organic carbon the turbidity of raw water quality
Within 30000 μ s/cm；The front end of self priming pump is provided with filter bag, and the aperture of described filter bag is 10 μm.
Preferably, described water tank adopts acid resisting material, is provided with closure above it, and lower end is funnel shaped, is provided with it
Agitator, liquid level sensor and ph sensor；The end face of described closure is provided with least 5 through holes；Described water tank and described mistake
Pipeline between filter stretches in water tank, and pipeline top is sealing structure, stretches into tank pipe wall and is provided with multiple apertures for 50 μm
Hole, the minimum altitude in hole controls at the 1/100-1/10 of tank height, and the described tank pipe that stretches into is externally provided with filter mantle, institute
The aperture stating filter mantle is 100 μm.
Preferably, described pretreatment unit includes one-level precision microfiltration filter, two grades of accurate microfiltration filters and three-level
Accurate microfiltration filter, in one-level precision microfiltration filter, the aperture of precision Filter element is 5 μm, essence in two grades of accurate microfiltration filters
The aperture of close filter element is 1 μm, and in three-level precision microfiltration filter, the aperture of precision Filter element is 0.45 μm；Described one-level precision microfiltration
The entrance of filter is connected with the outlet of self priming pump, the outlet of one-level precision microfiltration filter and two grades of accurate microfiltration filters
Entrance connects, and the outlet of two grades of accurate microfiltration filters is connected with the entrance of three-level precision microfiltration filter, three-level precision microfiltration
The outlet of filter is connected with water tank.
Preferably, all using polypropylene filter element, precision Filter element needs to change in time for one-level, two grades and three-level precision Filter element,
Blocking and excessive contaminants cooperating microorganisms can be avoided.
Preferably, described reverse osmosis concentration unit includes reverse osmosis units, high-pressure pump, ion interchange unit, the first conductance
Rate probe and the second conductivity probe；Wherein reverse osmosis units include reverse osmosis membrane and rustless steel putamina, described reverse osmosis membrane
Aperture value is 0.1nm；
Described ion interchange unit includes adsorption column and filler, and in described adsorption column, described filler is described filler
Hydrogen type cation exchange resin；
Described first conductivity probe exports and ion interchange unit between located at described reverse osmosis units concentrated water, the second electricity
Conductance is popped one's head in located between the pure water outlet of reverse osmosis units and elution device；Detect number by contrasting two conductivity probes
Value is it can be determined that whether reverse osmosis membrane working condition is good.
Preferably, described reverse osmosis units are provided with liquid-inlet, concentrated water outlet and pure water outlet；Described liquid-inlet passes through
High-pressure pump is connected with water tank, and described concentrated water outlet is connected with the entrance of described ion interchange unit, described ion interchange unit
Outlet is connected with water tank；
Described pure water outlet is connected with elution device；Described reverse osmosis units concentrated water and pure water outlet are designed with security valve；
In raw water concentration process, when reverse osmosis units pure water and concentrated water electrical conductivity difference are less than preset value, described security valve is opened, explanation
Now system cannot be carried out reverse osmosis concentration.
Preferably, described acid-base value adjustment unit includes ph sensor, agitator, metering dosing pump, the first acid solution medicine
Agent case and the second acid solution chemical tank；Described ph sensor in water tank, described first acid solution chemical tank and the second acid solution medicament
Case is arranged in juxtaposition；Described metering dosing pump, located between the first acid solution chemical tank, the second acid solution chemical tank and water tank, measures dosing
The entrance of pump is connected with the outlet of the first acid solution chemical tank, the outlet of the second acid solution chemical tank respectively, the outlet of metering dosing pump
It is connected with water tank.
Preferably, filtration, purification unit includes filter, liquid memory and vacuum pump, the entrance of described filter and institute
The outlet stating water tank connects, and the outlet of described filter is connected with the entrance of described liquid memory；Described vacuum pump with described
Liquid memory connects, and the outlet of described liquid memory is connected with the entrance of described adsorption and enrichment device；
Described filter includes impurity room, filter membrane and core, and described filter membrane is indoor located at impurity, and is supported by core；
The aperture span of described filter membrane is 0.1-0.7 μm.
Preferably, described general control system includes control unit and touch screen device, and described control unit is connected with touch screen device, institute
State control unit to be connected with self priming pump, liquid level sensor, ph sensor, metering dosing pump, high-pressure pump and acid-base value adjustment unit；
Described ph sensor is provided with lifting platform, can rise to ph sensor outside water tank if necessary.
Preferably, it is provided with liquid level sensor in described water tank, its height of water level controls the 1/5-4/5 in tank height.
The present invention provides a kind of device using reverse osmosiss and a grade resins combination extraction fresh water fulvic acid to carry out fulvic acid
The method extracted, it comprises the steps:
(1) start the main power start button of general control system；
(2) start self priming pump start button, self priming pump draws raw water by pipeline, and the filter bag of self priming pump front end is to raw water
Tentatively filtered, the raw water after preliminary filtration enters the one-level precision microfiltration mistake in pretreatment unit by the supercharging of self priming pump
Filter is once filtered to raw water, and the raw water after once filtering enters two grades of accurate microfiltration filters and carries out secondary filter, warp
Raw water after secondary filter enters three-level precision microfiltration filter and carries out three filtrations；Raw water after filtration enters water by pipeline
Case；When the water level in water tank reaches 4/5 tank height, self priming pump quits work；
(3) raw water in water tank enters into reverse osmosis concentration unit through high-pressure pump supercharging by pipeline, and reverse osmosis membrane can be right
Dissolving salt in raw water and Natural Dissolved Organic Matter are concentrated, and obtain pure water and concentrated water；Direct through the pure water of reverse osmosis membrane
It is discharged into elution device to be stored, concentrated water is recycled into water tank, when the dissolved organic carbon on-line determination device in water tank
When the content of the dissolved organic carbon measuring reaches preset value, stop concentrating；Reverse osmosis membrane is by fresh water such as rivers and lakes and subsoil water
Water body is separated into pure water and concentrated water, and pure water ratio is higher, and concentrated water saliferous rate and organic concentration are higher, but too high pure water ratio pair
Reverse osmosis membrane damages, and therefore, the ratio of the pure water amount that reverse osmosis membrane is discharged and the concentrated water amount discharged is 1:9-9:1, preferably
For 1:2-2:1；
(4) start acid-base value adjustment unit, metering dosing pump receives ph sensor signal and starts acid solution and adds program, from the
One acid solution chemical tank extracts acid solution and injects non-oxidizable acid solution in water tank by the first acid-resistant pipeline, stirs horse in water tank simultaneously
Reach startup so that acid solution and concentrated water uniformly mix, until reaching default ph value, metering first acid liquid program of dosing pump is stopped
Only work；
Metering dosing pump extracts Fluohydric acid. from the second acid solution chemical tank, injects hydrogen by the second acid-resistant pipeline in water tank
Fluoric acid, until reaching default hydrofluoric acid concentration, metering dosing pump and water tank stirring motor quit work；
(5) open the outlet valve of water tank, start vacuum pump simultaneously, pressed by vacuum pump, the concentrated water in water tank is passed through
In filter influent bin, sour insoluble impurity is removed by membrane retention, slightly carries fulvic acid solution and passes through filter membrane influent
In body bin；
(6) after the completion of filtering, close the outlet valve of water tank, open the outlet valve of liquid memory, liquid memory
In liquid flow into adsorption and enrichment device, fulvic acid is attracted on resin；
(7) after the completion of adsorbing, open the switch between elution device and adsorption and enrichment device, open adsorption and enrichment dress simultaneously
The liquid waste cock put, the pure water in elution device injects adsorption and enrichment device by pipeline, and adsorption and enrichment device is carried out
Rinse, flushing waste is directly discharged from liquid outlet；
(8), after the completion of rinsing, close the switch between elution device and adsorption and enrichment device, open going out of organic chemical tank
Mouth valve, organic chemical tank injects non-polar organic solvent, by resin by resistance to organic special pipeline in adsorption and enrichment device
Fulvic acid after absorption is discharged after there is desorbing in the presence of non-polar organic solvent, and the solution discharged is that fulvic acid is organic
Solution, rotated evaporation, nitrogen obtain after blowing and dissolve fulvic acid pressed powder in poisons in freshwater.Preferably, described first acid-proof pipe
Road requires to bear the non-oxidizing acid of 10mol/l；Described second acid-resistant pipeline requires to bear the Fluohydric acid. of 6mol/l；Described
Nitration mixture concentration in water tank is the non-oxidizable strong acid of 0.001-1mol/l and 0.1-0.5mol/l Fluohydric acid.；The preset value of described ph
For 0.5-3；Non-polar organic solvent in described chemicals dosing plant is methanol or ethanol highly basic；Described resistance to organic requirements for pipes can be held
By methanol or ethanol class low pole non-polar organic solvent.
Preferably, the discharge line of reverse osmosis units pure water is provided with flow speed control valve, described reverse osmosis units and described water tank
The pipeline connecting is provided with flow speed control valve, and the pure water amount that reverse osmosis membrane is discharged is 1:9-9:1 with the ratio of the concentrated water amount discharged.
Preferably, reverse osmosis membrane can not dry-storage, it is necessary to assure have water in putamina, if equipment leaves unused for some reason more than 70h,
Reverse osmosis membrane should be soaked in clean water, if leave unused for a long time must seal up for safekeeping by reverse osmosis membrane requirement storage mode.
Preferably, general control system adopts low-voltage distribution, and the electric pressure of power supplying and distributing equipment is 220vac, and sets low pressure and join
Electric cabinet, powers to process system power-equipment；On and off switch in control system is protected with electrical control cubicles gate interlock, can reach anti-
Dirt, rapid heat dissipation and easy-to-install effect.
Preferably, the front end of described high-pressure pump is provided with pressure gauge and security valve, in raw water concentration process, before described high-pressure pump
When pressure is more than preset value, described security valve is opened, it is to avoid high-pressure pump damages and pipeline burst phenomenon.
Preferably, the front end of described self priming pump is provided with relief valve, is provided with liquid level sensor in described water tank, and its water level is in water
During case 4/5 water tank volume, described relief valve is opened, and self priming pump shuts down, it is to avoid cistern water level is too high.
Compared with prior art the beneficial effect comprise that:
(1) apparatus structure that the present invention provides reverse osmosiss with fresh water fulvic acid is extracted in a grade resins combination is simple, automatization
Degree is high, easy to operate, easily and effectively can separate fulvic acid with other impurity, extracts substantial amounts of fulvic acid, in richness
Acid research and application provide sample guarantee；
(2) the one-level precision Filter element aperture in the present invention is set to 5 μm, and two grades of precision Filter element apertures are 1 μm, and three-level is accurate
Filter element aperture is 0.45 μm, has more effectively filtered the impurity such as float of larger particles in water, it is to avoid granule debris are to film
Scuffing, blocking and the impacting with high pressure causing；
(3) filler in reverse osmosis concentration unit intermediate ion switch is hydrogen type cation exchange resin, reverse osmosis concentrated
In compression process, in water body, the cation such as metal ion is concentrated simultaneously, and hydrogen type cation exchange resin can be in reverse osmosis concentration
During effectively remove the cation such as metal ion in concentrated water, effectively prevent possible flocculation in raw water concentration process and precipitation；
(4) whole process that acid-base value adjustment unit adjusts ph value is full automatic, saves labour force, reduces production
Cost, the accuracy rate of the ph value of modulation is higher；First acid solution chemical tank and the second acid solution chemical tank share a metering dosing
Pump, reduces production cost；
(5) the pure water amount discharged in reverse osmosis units in reverse osmosis concentration unit and the ratio of the concentrated water amount discharged are 2:1-
1:2, and then pure water discharge can be avoided excessive or the too small injury that film is caused or device efficiency reduction；
(6) bottom of water tank is funnel shaped, and stretches into the pipeline of water tank and be externally provided with filter mantle, not only contributes to concentrated water
Flow out, be more favorable to precipitate the impurity in concentrated water；After the completion of acid-base value is adjusted, concentrated water passes through membrane filtration, can remove dense
The sour insoluble impurity such as humic acid in water；In adsorption and enrichment device, resin removes the impurity in concentrated water further.
Brief description
Fig. 1 is the device technique flow chart that fresh water fulvic acid is extracted in reverse osmosiss of the present invention and a grade resins combination.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail.
Shown in ginseng Fig. 1, Fig. 1 is the technological process that fresh water fulvic acid device is extracted in reverse osmosiss of the present invention and a grade resins combination
Figure.The reverse osmosiss that the present invention provides extract fresh water fulvic acid device with a grade resins combination, including raw water feed unit, pretreatment
Unit, reverse osmosis concentration unit, acid-base value adjustment unit, water tank 9, general control system 5, filtration, purification unit and fulvic acid extract
Unit；Wherein raw water feed unit mainly includes self priming pump 1；Pretreatment unit includes one-level precision 2, two grades of essences of microfiltration filter
Close microfiltration filter 3, three-level precision microfiltration filter 4；Reverse osmosis concentration unit includes reverse osmosis units 11, ion interchange unit
22nd, high-pressure pump 10 and dissolved organic carbon on-line monitoring equipment, wherein reverse osmosis units 11 include reverse osmosis membrane and rustless steel putamina；
Acid-base value adjustment unit includes ph sensor, metering dosing pump 6, the first acid solution chemical tank 7 and the second acid solution chemical tank 8；Filter
Clean unit includes liquid memory 17, filter, vacuum pump 15, and wherein filter includes impurity room 18, filter membrane 16 and core
19, filter membrane 16 is located in impurity room 18, and is supported by core 19；Fulvic acid extraction unit includes elution device 14, organic medicament
Case 20, adsorption and enrichment device 21；, mainly using automatically controlling, collection control operation therein is unified in switch board for general control system 5
Carry out, whole system can be made to realize automatically controlling operation and manual operation.
Wherein, the entrance of one-level precision micro-filter 2 is connected with the outlet of self priming pump 1, one-level precision microfiltration filter 2
Outlet is connected with the entrance of two grades of accurate microfiltration filters 3, the outlet of two grades of accurate microfiltration filters 3 accurate microfiltration mistake with three-level
The entrance of filter 4 connects, and the outlet of three-level precision microfiltration filter 4 is connected with water tank 9；Ph sensor is located in water tank 9, and first
Acid solution chemical tank 7 and the second acid solution chemical tank 8 are arranged in juxtaposition, metering dosing pump 6 located at water tank 9 and the first acid solution chemical tank 7, the
Between two acid solution chemical tanks 8, entrance outlet, the second acid solution chemical tank with the first acid solution chemical tank 7 respectively of metering dosing pump 6
8 outlet connects, and the outlet of metering dosing pump 6 is connected with water tank 9；Reverse osmosis units 11 are provided with liquid-inlet, concentrated water outlet and
Pure water exports；Liquid-inlet is connected with water tank 9 by high-pressure pump 10, and concentrated water outlet is connected with water tank 9 through ion interchange unit 22,
Pure water outlet is connected with elution device 14；The entrance of liquid memory 17 is connected with filter outlet, the entrance of filter and water
The outlet of case 9 connects；The air entry of vacuum pump 15 is placed in the cavity of liquid memory 17；The outlet of liquid memory 17 and suction
The entrance 21 of attached enriching apparatus connects, the entrance of adsorption and enrichment device 21 outlet, the elution device 14 also with organic chemical tank 20
Outlet connect；The bottom of adsorption and enrichment device 21 is provided with liquid waste cock；General control system 5 includes control unit and touch screen
Device, control unit is connected with touch screen device, control unit and self priming pump 1, liquid level sensor, ph sensor, metering dosing pump 6, high
Press pump 10 and vacuum pump 15 control connection.
The reverse osmosiss that the present invention provides extract fresh water fulvic acid device with a grade resins combination, and its raw water water source is rivers lake
Pool and the poisons in freshwater such as subsoil water, the water quality requirement of raw water be the turbidity of water quality within 1000ntu, the value of dissolved organic carbon
Within 1000mg/l, electrical conductivity value is within 30000 μ s/cm；The front end of self priming pump is provided with filter bag, the aperture of filter bag
For 10 μm.
General control system adopts low-voltage distribution, and the electric pressure of power supplying and distributing equipment is 220vac, and sets low-voltage distribution cabinet, to
Process system power-equipment is powered.In addition, being equipped with the switch board of independent operation in control system, and electric switch and electrically first
Part all concentrates in switch board, and on and off switch and electrical control cubicles gate interlock are protected, and can reach dust-proof, rapid heat dissipation and easy-to-install
Effect.
First turn on main power and start button, make whole system in running order, self priming pump 1 is drawn by pipeline former
Water, raw water is tentatively filtered by the filter bag positioned at self priming pump front end, and the aperture of filter bag is 10 μm, filters through preliminary
The one-level precision microfiltration filter 2 that entered by the supercharging of self priming pump in pretreatment unit of raw water once mistake is carried out to raw water
Filter, the raw water after once filtering enters two grades of accurate microfiltration filters 3 and carries out secondary filter, and the raw water after secondary filter is entered
Enter three-level precision microfiltration filter 4 and carry out three filtrations, the wherein filter element aperture in one-level precision microfiltration filter 2 is 5 μm, two
Filter element aperture in the accurate microfiltration filter 3 of level is 1 μm, and the filter element aperture in three-level precision microfiltration filter 4 is 0.45 μm, by
In poisons in freshwater, particle suspensions are more, three-level precision microfiltration filter series connection, and the setting of this kind of filter element diameter can be more preferable
Filter the impurity such as float of larger particles in water, increase water quality, more effectively avoid what particulate contaminant caused to film to draw
Wound, blocking and impacting with high pressure.In addition, precision Filter element needs to change in time, it is to avoid blocking and cross multi-pollutant and gather and grow micro- life
Thing.
Raw water after three-level precise filtering device filters enters water tank 9 by connecting pipe, and the liquid level in water tank 9 passes
Sensor detects to the water level in water tank, and when water level reaches the 4/5 of water tank volume, liquid level sensor is sent out to general control system
Send liquid level signal, after general control system receives liquid level signal, send control signal so as to quit work to self priming pump, that is, stop
The water filling in water tank.
Described water tank adopts acid resisting material, is provided with closure above it, lower end be funnel shaped, be provided with it agitator and
Ph sensor；The end face of described closure is provided with least 5 through holes.
The reverse osmosis membrane that raw water in water tank 9 is pressurizeed in entrance reverse osmosis units 11 through high-pressure pump 10, reverse osmosis membrane can
By the inorganic salt in the fresh water such as surface water, subsoil water and tap water and organic retention, it is left 96% to sodium ion removal efficiency
The right side, can reach 98%；Pure water through reverse osmosis membrane is directly discharged in elution device 14 storage, reverse osmosis units 11 with
Elution device 14 connecting pipe is provided with flow speed control valve, can adjust the speed that pure water flows out reverse osmosis membrane, its speed range of accommodation
For 0-200l/h；Treat system after hours, the pure water in available elution device 14 is to reverse osmosis membrane flush clean；Through reverse osmosiss
The concentrated water of membrance separation is back in water tank 9 after ion interchange unit 22 Adsorption cation, reverse osmosis units 11 with
Ion interchange unit 22 connecting pipe is provided with flow speed control valve, can adjust the speed that concentrated water flows out reverse osmosis membrane, and its speed is adjusted
Scope is 0-200l/h；It is suitable that the speed value of speed and concentrated water outflow reverse osmosis membrane that pure water flows out reverse osmosis membrane is arranged on
In the range of, make the pure water amount that reverse osmosis membrane is discharged be 1:9-9:1 with the ratio of the concentrated water amount of discharge, and then can avoid because of pure water
The excessive velocities flowing out or the injury excessively slowly reverse osmosis membrane being caused or device efficiency reduce.Concentrated water water tank inlet can circulate dense
Contracting, so repeatedly, the water in raw water box is fewer and feweri, and the concentration more and more higher of salinity and the content of organic matter, when positioned at water tank
In the dissolved organic carbon content that measures of dissolved organic carbon on-line determination device when reaching preset value, stop concentrating, close and concentrate
System.
Described ion interchange unit includes adsorption column and filler, and in described adsorption column, described filler is described filler
Hydrogen type cation exchange resin.
During raw water concentrates, avoid that cocnentration factor is too high, cocnentration factor is higher, saliferous rate and organic concentration are got over as far as possible
Height, too high concentration can damage to reverse osmosis membrane, therefore, the content of organic matter in concentrated water is controlled in below 10000mg/l.
It is provided with the first conductivity probe 13, reverse osmosiss list between the outlet of reverse osmosis concentration unit concentrated water and ion interchange unit
It is provided with the second conductivity probe 12 between unit and elution device 14, visited by contrasting the first conductivity probe 13 and the second electrical conductivity
The numerical value of 12 detections are it is possible to determine that reverse osmosis membrane whether seepage；If i.e. the first conductivity probe 13 and the second electrical conductivity are visited
The numerical value of 12 detections equal it is possible to determine that Seepage in reverse osmosis membrane.Reverse osmosis units concentrated water and the exit of pure water
It is additionally provided with security valve, in raw water concentration process, when reverse osmosis units concentrated water and pure electrical conductivity of water difference are less than preset value, peace
Protect valve to open, now system is out of service.
The front end of high-pressure pump 10 is provided with security valve, during concentrating, when water level is less than the 1/5 of water tank, security valve
Open, high-pressure pump 10 shuts down, thus can avoid the phenomenon leading to high-pressure pump to burn during high-pressure pump idle running；Before high-pressure pump
End is additionally provided with pressure gauge, and when the pressure before high-pressure pump is more than preset value, security valve is opened, and high-pressure pump can be avoided to damage and manage
Road Decrepitation Phenomena.
Filler in reverse osmosis concentration unit intermediate ion switch 22 is hydrogen type cation exchange resin, can be in reverse osmosis
Thoroughly effectively remove the cation such as metal ion in concentrated water in concentration process, effectively prevent in raw water concentration process in water tank 9 and pipe
Possible flocculation and precipitation in road；Hydrogen type cation exchange resin in ion interchange unit 22 should ensure that q.s or lives in time
Change.
Raw water concentrates after terminating, and starts acid-base value adjustment unit, arranges required ph value, it sets in general control system 5
Fixed ph value scope is 0.5-3, and ph value signal is passed to metering dosing pump 6 by ph sensor, and metering dosing pump startup acid solution adds
Enter program, from the first acid solution chemical tank 7 extract acid solution pass through the first acid-resistant pipeline to water tank inject non-oxidizable acid solution, simultaneously
Stirring motor in water tank 9 starts so that acid solution and concentrated water uniformly mix, and carries out ph value and adjusts, sets in advance until ph value reaches
The value put, the first acid liquid program stopped work of metering dosing pump；Metering dosing pump extracts hydrogen from the second acid solution chemical tank 8
Fluoric acid, injects Fluohydric acid. by the second acid-resistant pipeline in water tank 9, until reaching default hydrofluoric acid concentration, measures dosing pump
Quit work with water tank stirring motor.
The process that whole ph value is adjusted is full automatic, saves labour force, reduces production cost, and the ph modulating
The degree of accuracy of value is higher, and the process efficiency of preparation is also higher.During ph is adjusted, turn on agitator motor makes agitator stir
Mix the water in water tank 9 and uniformly dissolve in water so that flowing into acid solution medicament therein, the ph value of local can be avoided higher or low.
After the completion of ph value is adjusted, the concentrated water in water tank 9 stands 24h, because water tank 9 adopts acid resisting material, and sets above it
There is closure, the end face of closure is provided with least 5 through holes；Lower end is funnel shaped, is conducive to the output of concentrated water；It is provided with it
Agitator and ph sensor；Ph sensor is provided with lifting platform, and after the completion of ph value is adjusted, ph sensor can be risen to the water surface by lifting platform
On, it is to avoid Fluohydric acid. corrodes probe.
Pipeline between water tank and filter stretches in water tank, and pipeline top is sealing structure, stretches into tank pipe wall and sets
There is the hole that multiple apertures are 50 μm, the minimum altitude in hole controls at the 1/100-1/10 of tank height, described stretch into cistern tube
Road is externally provided with filter mantle, and the aperture of described filter mantle is 100 μm, is more beneficial for precipitating the acid such as humic acid in concentrated water insoluble miscellaneous
Matter.
Open the outlet valve of water tank 9, start vacuum pump 15 simultaneously, pressed by vacuum pump 15, the concentrated water warp in water tank 9
In filter influent bin 17, sour insoluble impurity is retained and removed by filter membrane 16, slightly carries fulvic acid solution and passes through filter membrane
In influent bin 17.
After the completion of filtration, close the outlet valve of water tank 9, open the outlet valve of liquid memory 17, liquid memory
Liquid in 17 flows into adsorption and enrichment device 21, and fulvic acid is attracted on resin；After the completion of absorption, open elution device 14 with
Switch between adsorption and enrichment device 21, opens the waste liquid waste cock of adsorption and enrichment device 21, in elution device 14 simultaneously
Pure water injects adsorption and enrichment device 21 by pipeline, adsorption and enrichment device 21 is rinsed, flushing waste is directly from liquid discharge
Mouth is discharged.
After the completion of flushing, close the switch between elution device 14 and adsorption and enrichment device 21 and liquid discharge valve door, beat
Have the outlet valve of machine chemical tank 20, organic chemical tank 20 injects non-pole by resistance to organic pipeline in adsorption and enrichment device 21
Property organic solvent, occurred to discharge after desorbing in the presence of non-polar organic solvent by the fulvic acid after resin absorption, discharged
Solution be fulvic acid organic solution, rotated evaporation, nitrogen blow after obtain poisons in freshwater in dissolve fulvic acid pressed powder.
After completing a cycle of operation, restart self priming pump, enter next cycle of operation.When the water body content of organic matter
When relatively low, can be intake for more than 1 time so that concentrated water dissolved organic carbon concentration reaches preset value in water tank 9 by self priming pump, then carry out
Next step acid-base value is adjusted.
Dissolving fulvic acid extracts after terminating, and closes the valve between water tank 9 and filter, by the pure water in elution device 14
Pour water tank into, start and concentrate, concentrated water valve is reached maximum, using pure water the cleaning realizing reverse osmosis membrane is washed away to film.Reverse osmosis
Permeable membrane forbids stored dry, it is necessary to assure have water in putamina, if not using more than 70h for some reason, should be soaked in reverse osmosis membrane dry
In net water, if leave unused for a long time must seal up for safekeeping by reverse osmosis membrane requirement storage mode.Gained pure water in the extraction of poisons in freshwater fulvic acid
It is stored in elution device 14, rinses offer water for reverse osmosis membrane, successfully solve the practical problem that field pure water is difficult to obtain.
It is disposable filter membrane that described filtration, purification unit uses filter membrane, and filter membrane needs to be resistant to 0.2-0.4mol/l strong acid,
Filter membrane stores on request and uses, but the siliceous filter membrane such as unusable glass fiber filter.
A series of detailed description mentioned above is only for illustrating of the feasibility embodiment of the present invention,
They are not to limit the scope of the invention, the ken possessing in described technical field those of ordinary skill
Interior, the various change made on the premise of without departing from present inventive concept belongs to protection scope of the present invention.
Claims (10)
1. the device of fresh water fulvic acid is extracted in reverse osmosiss and a grade resins combination, includes raw water feed unit, pretreatment unit, instead
Osmosis concentration unit, acid-base value adjustment unit, water tank, general control system, filtration, purification unit and fulvic acid extraction unit；It is special
Levy and be,
Described fulvic acid extraction unit includes organic chemical tank, elution device and adsorption and enrichment device；Described adsorption and enrichment device
Entrance be connected with the outlet of described organic chemical tank, the outlet of described elution device, adsorption and enrichment bottom of device is provided with liquid
Waste cock；
Described adsorption and enrichment device includes adsorption column and filler, and in described adsorption column, described filler is xad-8 to described filler
One or more of resin, dax-8 resin and xad-7 resin.
2. reverse osmosiss as claimed in claim 1 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that institute
State water tank and adopt acid resisting material, above it, be provided with closure, lower end is funnel shaped, is provided with agitator, liquid level sensor in it
With ph sensor；The end face of described closure is provided with least 5 through holes；Pipeline between described water tank and described filter stretches into
In water tank, pipeline top is sealing structure, stretches into tank pipe wall and is provided with the hole that multiple apertures are 50 μm, the minimum altitude control in hole
At the 1/100-1/10 of tank height, the described tank pipe that stretches into is externally provided with filter mantle to system, and the aperture of described filter mantle is 100
μm.
3. reverse osmosiss as claimed in claim 1 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that institute
State raw water feed unit and include self priming pump, the front end of described self priming pump is provided with filter bag；Described pretreatment unit includes one-level essence
Close microfiltration filter, two grades of accurate microfiltration filters and three-level precision microfiltration filter are accurate in one-level precision microfiltration filter
The aperture of filter element is 5 μm, and in two grades of accurate microfiltration filters, the aperture of precision Filter element is 1 μm, in three-level precision microfiltration filter
The aperture of precision Filter element is 0.45 μm；The entrance of described one-level precision microfiltration filter is connected with the outlet of described self priming pump, and one
The outlet of the accurate microfiltration filter of level is connected with the entrance of two grades of accurate microfiltration filters, the outlet of two grades of accurate microfiltration filters
It is connected with the entrance of three-level precision microfiltration filter, the outlet of three-level precision microfiltration filter is connected with water tank.
4. reverse osmosiss as claimed in claim 1 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that institute
State reverse osmosis concentration unit and include reverse osmosis units, ion interchange unit, high-pressure pump, the first conductivity probe and the second electrical conductivity
Probe；Wherein reverse osmosis units include reverse osmosis membrane and rustless steel putamina, and the aperture value of described reverse osmosis membrane is 0.1nm；
Described first conductivity probe exports and ion interchange unit between located at described reverse osmosis units concentrated water, the second electrical conductivity
Probe is located between pure water outlet and elution device；
Described ion interchange unit includes adsorption column and filler, and in described adsorption column, described filler is Hydrogen to described filler
Cation exchange resin.
5. reverse osmosiss as claimed in claim 4 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that institute
State reverse osmosis units and be provided with liquid-inlet, concentrated water outlet and pure water outlet；Described liquid-inlet is connected with water tank by high-pressure pump,
Described concentrated water outlet is connected with described ion interchange unit entrance, and described ion interchange unit outlet is connected with water tank；Described pure
Water out is connected with elution device；Described reverse osmosis units concentrated water and pure water outlet are designed with security valve.
6. reverse osmosiss as claimed in claim 1 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that institute
State acid-base value adjustment unit and include ph sensor, agitator, metering dosing pump, the first acid solution chemical tank and the second acid solution medicament
Case；In water tank, described first acid solution chemical tank and the second acid solution chemical tank are arranged in juxtaposition described ph sensor；Described metering
Located between the first acid solution chemical tank, the second acid solution chemical tank and water tank, the entrance of metering dosing pump is respectively with first for dosing pump
The outlet of acid solution chemical tank, the outlet of the second acid solution chemical tank connect, and the outlet of metering dosing pump is connected with water tank.
7. reverse osmosiss as claimed in claim 1 and a grade resins combination extract the device of fresh water fulvic acid it is characterised in that mistake
Filter clean unit includes filter, liquid memory and vacuum pump, and the entrance of described filter is connected with the outlet of described water tank,
The outlet of described filter is connected with the entrance of described liquid memory；Described vacuum pump is connected with described liquid memory, institute
The outlet stating liquid memory is connected with the entrance of described adsorption and enrichment device；
Described filter includes impurity room, filter membrane and core, and described filter membrane is indoor located at impurity, and is supported by core；Described
The aperture span of filter membrane is 0.1-0.7 μm.
8. reverse osmosiss as claimed in claim 1 and grade resins combination extract the device of fresh water fulvic acid it is characterised in that described
General control system includes control unit and touch screen device, and described control unit is connected with touch screen device, described control unit and self priming pump,
Liquid level sensor, ph sensor, metering dosing pump and high-pressure pump connect；Described ph sensor is provided with lifting platform.
9. utilize the arbitrary described reverse osmosiss of claim 1-8 to extract the use of the device of fresh water fulvic acid with a grade resins combination
Method is it is characterised in that it comprises the steps:
(1) start the main power start button of general control system；
(2) start self priming pump start button, self priming pump draws raw water by pipeline, and the filter bag of self priming pump front end is carried out to raw water
Preliminary filtration, the raw water after preliminary filtration enters the accurate microfiltration filter of one-level in pretreatment unit by the supercharging of self priming pump
Raw water is once filtered, the raw water after once filtering enters two grades of accurate microfiltration filters and carries out secondary filter, through secondary
Raw water after filtration enters three-level precision microfiltration filter and carries out three filtrations；Raw water after filtration enters water tank by pipeline,
When the water level in water tank reaches 4/5 tank height, self priming pump quits work；
(3) raw water in water tank enters into reverse osmosis concentration unit through high-pressure pump supercharging by pipeline, and reverse osmosis membrane can be to raw water
In dissolving salt and Natural Dissolved Organic Matter concentrated, obtain pure water and concentrated water；Directly discharge through the pure water of reverse osmosis membrane
Stored in elution device, concentrated water removes cation through ion interchange unit and is recycled into water tank, when in water tank
When the dissolved organic carbon content that dissolved organic carbon on-line determination device measures reaches preset value, stop concentrating；
(4) start acid-base value adjustment unit, metering dosing pump receives ph sensor signal and starts acid solution addition program, from the first acid
Liquid chemical tank extracts acid solution and injects non-oxidizable acid solution in water tank by the first acid-resistant pipeline, and in water tank, stirring motor opens simultaneously
Move so that acid solution and concentrated water uniformly mix, until reaching default ph value, measure first acid liquid program stopped work of dosing pump
Make；
Metering dosing pump extracts Fluohydric acid. from the second acid solution chemical tank, injects hydrogen fluorine by the second acid-resistant pipeline in water tank
Acid, until reaching default hydrofluoric acid concentration, metering dosing pump and water tank stirring motor quit work；
(5) open the outlet valve of water tank, start vacuum pump simultaneously, pressed by vacuum pump, the concentrated water in water tank is through filter
In influent bin, sour insoluble impurity is removed by membrane retention, slightly carries fulvic acid solution and is stored up by filter membrane influent
In storage；
(6) after the completion of filtering, close the outlet valve of water tank, open the outlet valve of liquid memory, in liquid memory
Liquid flows into adsorption and enrichment device, and fulvic acid is attracted on resin；
(7), after the completion of adsorbing, open the switch between elution device and adsorption and enrichment device, open adsorption and enrichment device simultaneously
Liquid waste cock, the pure water in elution device injects adsorption and enrichment device by pipeline, and adsorption and enrichment device is rinsed,
Flushing waste is directly discharged from waste liquid outlet；
(8), after the completion of rinsing, close the switch between elution device and adsorption and enrichment device, open the outlet valve of organic chemical tank
Door, organic chemical tank injects non-polar organic solvent, after resin absorption by resistance to organic pipeline in adsorption and enrichment device
Fulvic acid is discharged after there is desorbing in the presence of non-polar organic solvent, and the solution discharged is fulvic acid organic solution, warp
Rotary evaporation, nitrogen obtain after blowing and dissolve fulvic acid pressed powder in poisons in freshwater.
10. dissolve fulvic acid extracting method in poisons in freshwater as claimed in claim 9 it is characterised in that described first is acidproof
Requirements for pipes can bear the non-oxidizing acid of 10mol/l；Described second acid-resistant pipeline requires to bear the Fluohydric acid. of 6mol/l；Institute
Stating the nitration mixture concentration range in water tank is the non-oxidizable strong acid of 0.001-1mol/l and 0.1-0.5mol/l Fluohydric acid.；Described ph's
Preset value is 0.5-3；Non-polar organic solvent in described chemicals dosing plant is methanol or ethanol highly basic；Described resistance to organic pipeline will
Ask and can bear methanol or ethanol class low pole non-polar organic solvent.
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| CN201610920473.2A CN106336041B (en) | 2016-10-21 | 2016-10-21 | Counter-infiltration is combined the device for extracting fresh water fulvic acid with a grade resins |
| PCT/CN2016/109445 WO2018072280A1 (en) | 2016-10-21 | 2016-12-12 | Extracting device for fulvic acid dissolved in fresh water body and preparation method therefor |
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| CN201610920473.2A CN106336041B (en) | 2016-10-21 | 2016-10-21 | Counter-infiltration is combined the device for extracting fresh water fulvic acid with a grade resins |
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| CN106336041B CN106336041B (en) | 2017-09-12 |
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| CN107019933A (en) * | 2017-05-27 | 2017-08-08 | 浙江省农业科学院 | Fulvic acid extraction element and apply its fulvic acid extracting method |
| CN107866089A (en) * | 2017-12-26 | 2018-04-03 | 山东恒力新能源工程有限公司 | Weathered coal extracts the device and its extraction process of pharmaceutical grade fulvic acid |
| WO2018072280A1 (en) * | 2016-10-21 | 2018-04-26 | 中国环境科学研究院 | Extracting device for fulvic acid dissolved in fresh water body and preparation method therefor |
| WO2018145457A1 (en) * | 2017-02-08 | 2018-08-16 | 中国环境科学研究院 | Soil hydrophobic dissolved organic matter extraction and purification apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018072280A1 (en) * | 2016-10-21 | 2018-04-26 | 中国环境科学研究院 | Extracting device for fulvic acid dissolved in fresh water body and preparation method therefor |
| WO2018145457A1 (en) * | 2017-02-08 | 2018-08-16 | 中国环境科学研究院 | Soil hydrophobic dissolved organic matter extraction and purification apparatus |
| CN107019933A (en) * | 2017-05-27 | 2017-08-08 | 浙江省农业科学院 | Fulvic acid extraction element and apply its fulvic acid extracting method |
| CN107866089A (en) * | 2017-12-26 | 2018-04-03 | 山东恒力新能源工程有限公司 | Weathered coal extracts the device and its extraction process of pharmaceutical grade fulvic acid |
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