CN106496592B - Equipment for extracting hydrophobic humic acid in water body - Google Patents
Equipment for extracting hydrophobic humic acid in water body Download PDFInfo
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- CN106496592B CN106496592B CN201610920299.1A CN201610920299A CN106496592B CN 106496592 B CN106496592 B CN 106496592B CN 201610920299 A CN201610920299 A CN 201610920299A CN 106496592 B CN106496592 B CN 106496592B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
Abstract
The invention provides a kind of equipment for being used to extract hydrophobic humic acid in water body to be used for the equipment for extracting hydrophobic humic acid in water body, including raw water feed unit, pretreatment unit, nanofiltration upgrading unit, acid-base value adjustment unit, organic matter extraction unit, the first water tank, general control system, the second water tank, pH value automatic adjustment unit and humic acid extraction unit；Wherein, the humic acid extraction unit includes the second elution device, liquid memory, filter and vavuum pump；The entrance of the filter respectively with the exporting of second water tank, the outlet of second elution device is connected, the outlet of the filter is connected with liquid memory entrance；Humic acid and other Dissolved Organic Matters are separated by membrane filtration in humic acid extraction unit, then is eluted and purified by elution device, extracts the humic acid of high concentration.A kind of device structure for extracting hydrophobic humic acid in water body provided by the invention is simple, automaticity is high, easy to operate.
Description
Technical field
The present invention relates to environmental technology field, more particularly to a kind of equipment for extracting hydrophobic humic acid in water body.
Background technology
DOM is to be mixed by a kind of natural macromolecular organic matter that aperture span is 0.5 μm of filter membrane
Thing, it changes from animals and plants secretion and its Residue decay product, the Nomenclature Composition and Structure of Complexes with space-time and source.Dissolve organic
Matter mainly includes the acidic materials such as humic acid, fulvic acid, and the acidic materials molecular weight such as humic acid, fulvic acid is big, it is difficult to drops
Solution, is the main component in DOM, by extensive concern.In addition, humic acid, particularly hydrophobicity dissolve humic acid to having
The environmental behaviour of organic pollutants has important influence.Research shows, phenolic hydroxyl group, carbonyl, the aromatic radical contained in humic acid
Etc. can be interacted with the heavy metal in water and organic matter, and then realize conversion, the migration to pollutant in the environment
And home to return to.Content of humic acid is low in water body, and content is generally 1-3mg/L in fresh water, and content is generally 0.1-0.5mg/ in seawater
L, how to realize the problem of humic acid that high concentration is efficiently extracted from substantial amounts of fresh water or Marine water is urgent need to resolve.
Chinese invention (application number：201310548129.1 title：From percolate the technique of extracted humic acid and
Special purpose device) a kind of technique and special purpose device of the extracted humic acid from percolate are disclosed, its technique includes following step
Suddenly：
(1) raw water is passed through pretreatment system and carries out water quality adjustment, make its pH value between 4-9, oxidation-reduction potential ORP
In the range of 150-250mV, so that material film is to the concentrating and separating of humic acid, so as to improve the service life of material film；
(2) it is rotten plant using membrane separating method under 10-30bar pressure condition by step (1) pretreated water outlet
Acid is trapped within concentrate, forms humic acid dope, is finally given the preprocessed aqueous concentration of concentration ratio and is improved 30-60 times
Humic acid dope.
The special purpose device of present invention extracted humic acid technique from percolate, including raw water box (1), raw water box (1)
Water side is connected to pretreatment system (2), intake pump (3) is housed on raw water box (1) and pretreatment system (2) connecting line, in advance
Processing system (2) output end is connected with accurate filter (4), and accurate filter (4) output end is connected with material membrane module (5),
High-pressure pump (6) is housed on accurate filter (4) and material membrane module (5) connecting line, the concentrate of material membrane module (5) goes out
Mouth of a river connection collection box (7), permeate delivery port are connected to water producing tank (8).
The present invention can extract the humic acid dope of high concentration, but the water body that the present invention is applicable is narrow, it is impossible to will
Humic acid is completely separated with fulvic acid, and can not realize Automated condtrol, and inconvenient for operation, exploitativeness is bad.
The content of the invention
In order to which humic acid and fulvic acid are efficiently separated, and extracted humic acid is used, and the invention provides one kind
Equipment for extracting hydrophobic humic acid in water body, it effectively can easily extract the humic acid in seawater or fresh water raw water.
In order to solve the above-mentioned technical problem, a kind of equipment for extracting hydrophobic humic acid in water body of the invention, including
Raw water feed unit, pretreatment unit, nanofiltration upgrading unit, acid-base value adjustment unit, organic matter extraction unit, the first water tank,
General control system, the second water tank, pH value automatic adjustment unit and humic acid extraction unit；
The pH value automatic adjustment unit includes pH sensors, the first acid solution chemical tank, the second acid solution chemical tank and dosing
Pump；For the pH sensors in second water tank, the first acid solution chemical tank and the second acid solution chemical tank are arranged side by side
Arrangement, the outlet of the first acid solution chemical tank, the outlet of the second acid solution chemical tank by dosing pump with second water tank
Connection；
The humic acid extraction unit includes the second elution device, liquid memory, filter and vavuum pump；The filtering
The entrance of device respectively with the exporting of second water tank, the outlet of second elution device is connected, the outlet of the filter
It is connected with liquid memory entrance；The filter includes sample room, filter membrane and core, the filter membrane be placed in the sample room it
It is interior, and filter membrane supporter is used as using the core；The aperture span of the filter membrane is 0.1-0.7 μm；The vavuum pump
Outlet is connected with the liquid memory.
Preferably, the raw water feed unit uses self-priming water supplying pump, and raw water is seawater or fresh water, the turbidity of raw water quality
Within 100NTU, TOC value is within 1000mg/l, and electrical conductivity value is within 40000 μ S/cm；The front end of self priming pump
Provided with filter bag, the aperture of the filter bag is 10 μm.
Preferably, the pretreatment unit includes one-level precision micro-filtration filter and two level precision micro-filtration filter, one-level
The aperture of precision Filter element is 1 μm in accurate micro-filter, and the aperture of precision Filter element is 0.45 μm in two level precision micro-filter；Institute
The outlet for stating the entrance and self priming pump of one-level precision micro-filter connects, and the outlet of one-level precision micro-filter and two level precision are micro-
The entrance connection of filter, the outlet of two level precision micro-filter is connected with the first water tank.
Preferably, one-level, two level precision Filter element use polypropylene filter core, and precision Filter element needs to change in time, can kept away
Exempt to block and excessive contaminants cooperating microorganisms.
Preferably, first water tank uses acid resisting material, and it is provided with closure above, and it is interior provided with agitator, liquid level
Sensor and pH sensors；The end face of the closure is provided with least five through hole；First water tank fills with the adsorption and enrichment
Pipeline between putting is stretched into water tank, is sealing structure at the top of pipeline, and duct wall is provided with the hole that multiple apertures are 50 μm, and hole is most
Low clearance is controlled at the 1/10 of tank height, and the tank pipe that stretches into is externally provided with filter mantle, and the aperture of the filter mantle is
100μm。
Preferably, second water tank uses acid resisting material, and it is provided with closure above, and lower end is funnel shaped, in it
Provided with agitator, liquid level sensor and pH sensors；The end face of the closure is provided with least five through hole；Second water tank
Pipeline between the filter gos deep into water tank, is sealing structure at the top of pipeline, it is 50 μm that duct wall, which is provided with multiple apertures,
Hole, the minimum altitude in hole controlled at the 1/10 of tank height, and the tank pipe that stretches into is externally provided with filter mantle, the filtering
The aperture of cover is 100 μm；Second water tank is provided with nitrogen feedway, prevents humic acid from aoxidizing in the basic conditions.
Preferably, the nanofiltration upgrading unit includes nano-filtration unit, high-pressure pump and the on-line monitoring spy of the first dissolved organic carbon
Head and the second dissolved organic carbon on-line monitoring probe；Wherein nano-filtration unit includes NF membrane and stainless steel putamina, the NF membrane
Aperture value be 1-2nm；
The first dissolved organic carbon on-line monitoring probe is located at the nano-filtration unit concentrated water exit, and the second dissolving is organic
Carbon on-line monitoring probe is at the wastewater outlet of nano-filtration unit.
Preferably, the nano-filtration unit is provided with original water inlet, concentrated water outlet and waste liquid outlet；The original water inlet passes through height
Press pump is connected with water tank, and the concentrated water outlet is connected with the first water tank；The nano-filtration unit concentrated water outlet is all provided with wastewater outlet
There is a security valve, in raw water concentration process, the nano-filtration unit concentrated water and waste water dissolved organic carbon on-line monitoring probe detection numerical value
When difference is less than preset value, the security valve is opened, and illustrates that now system can not be concentrated.
Preferably, acid-base value adjustment unit includes pH sensors, agitator, metering dosing pump and acid solution chemical tank；Institute
PH sensors are stated in the first water tank, the metering dosing pump is located between the first water tank and acid solution chemical tank, measures dosing
The entrance of pump is connected with the outlet of acid solution chemical tank, and the outlet for measuring dosing pump is connected with the first water tank.
Preferably, the organic matter extraction unit includes adsorption and enrichment device, the first elution device and alkali lye chemical tank, the
One elution device and alkali lye chemical tank are arranged in juxtaposition；The outlet of first elution device, the outlet of alkali lye chemical tank with absorption
The entrance connection of enriching apparatus, the entrance of the adsorption and enrichment device are connected with the outlet of the first water tank, adsorption and enrichment device
Outlet is connected with the second water tank, and its bottom is provided with the waste cock of flushing liquor.
Preferably, the adsorption and enrichment device includes adsorption column and filler, and the filler is described in the adsorption column
Filler is the one or more of XAD-8 resins, DAX-8 resins and XAD-7 resins.
Preferably, the general control system includes control unit and touch screen device, and described control unit is connected with touch screen device, institute
Control unit is stated to be connected with self priming pump, liquid level sensor, pH sensors, measuring pump, high-pressure pump and pH value automatic adjustment unit；Institute
State liquid level sensor and pH sensors are located in first water tank and the second water tank, the pH sensors are provided with lifting platform, must
It can be risen to when wanting outside water tank；1/5-4/5 of the height of water level control of first water tank in tank height.
Present invention also offers a kind of equipment utilized for extracting hydrophobic humic acid in water body to carry out humic acid extraction
Method, it is characterised in that it comprises the following steps：
(1) the general supply start button of general control system is started；
(2) self priming pump start button is started, 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 one-level precision micro-filtration filter that the raw water after filtering is entered in pretreatment unit by the supercharging of self priming pump
Raw water is once filtered, the raw water after once filtering enters two level precision micro-filtration filter and carries out secondary filtering；Cross
Raw water after filter enters the first water tank by pipeline；When water level in first water tank reaches 4/5 tank height, self priming pump stops work
Make；
Raw water in (3) first water tanks is pressurized through high-pressure pump enters nano-filtration unit by pipeline, and NF membrane can be to raw water
In natural DOM concentrated, obtain waste water and concentrated water；By the direct discharging of waste water of NF membrane, concentrated water circulate into
Enter the first water tank, when the content of the organic carbon of the TOC on-line monitoring probe measure in the first water tank reaches preset value, stop
Only concentrate；
(4) acid-base value adjustment unit is started, metering dosing pump receives the startup of pH sensor signals and passed through from acid solution chemical tank
Acid-resistant pipeline injects acid solution into the first water tank, while stirring motor starts in the first water tank so that acid solution is uniformly mixed with concentrated water
Close, until reaching default pH value, measure dosing pump and the first water tank stirring motor is stopped；
(5) complete the concentrated water after pH value regulation and adsorption and enrichment device is flowed into by pipeline, after the completion of absorption, open the first leaching
The outlet valve of cleaning device, the pure water in the first elution device open adsorption and enrichment by pipe flushing adsorption and enrichment device
Switch below device, flushing waste are discharged by pipeline, complete the flushing of adsorption and enrichment device, close waste liquid waste cock；
(6) after completing the flushing of adsorption and enrichment device, the outlet valve of the first elution device is closed, opens alkali lye chemical tank
Outlet valve, alkali lye chemical tank inject alkali lye by alkaline-resisting pipeline into adsorption and enrichment device, by the natural dissolving of resin adsorption
Organic matter desorbs in the presence of alkali lye, and efflux flows into the second water tank through piping；
(7) pH automatic adjustment units are started, the detection signal startup acid solution that pH automatic adjustment units receive pH sensors adds
Enter program, pressed through dosing pump, extract acid solution from the first acid solution chemical tank and injected by the first acid-resistant pipeline into the second water tank
Non-oxidizable acid solution, while stirring motor starts in the second water tank so that acid solution and organic matter uniformly mix, default until reaching
PH value, first passage acid liquid program stopped work；
Pressed through dosing pump, hydrofluoric acid is extracted from the second acid solution chemical tank, by the second acid-resistant pipeline to the second water tank
Middle injection hydrofluoric acid, until the liquid in the second water tank reaches default hydrofluoric acid concentration, dosing pump and the second water tank stirring horse
Up to being stopped；
(8) outlet valve of the second water tank is opened, while starts vavuum pump, is pressed by vavuum pump, in the second water tank
Organic matter passes through in filter influent holder, and by membrane filtration, hydrophobic humic acid is left on above filter membrane organic matter, miscellaneous
Mass flow enters in liquid memory；
(9) after organic matter completes filtering, the outlet valve of the second water tank is closed, opens the outlet valve of the second elution device
, the pure water in the second elution device is rinsed by pipeline inflow filter to filter membrane；After the completion of flushing, fluid storage
Liquid in device directly discharges, and the organic matter stayed on filter membrane is the required humic acid extracted.
Preferably, the discharge line of the nano-filtration unit waste water is provided with flow speed control valve, and concentrated water discharge line is provided with speed governing
Valve, the wastewater flow rate of nano-filtration unit discharge are 1 with the ratio of the concentrated water amount of discharge:9-9:1.
Preferably, the degree of the acid-resistant pipeline and the first acid-resistant pipeline can bear be 10mol/L strong acid；The alkali lye
The sodium hydroxide that alkali lye in chemical tank is 0.1mol/L；The degree of the alkaline-resisting pipeline can bear 0.1mol/L highly basic；It is described
The degree of second acid-resistant pipeline can bear 6mol/L hydrofluoric acid；Nitration mixture concentration range in second water tank is 0.001-
1mol/L hydrochloric acid and 0.1-0.5mol/L hydrofluoric acid；The preset value of the pH is 0.5-3.
Preferably, the pressure value of the high-pressure pump is 0-1.0Mpa, and the front end of high-pressure pump is provided with pressure gauge and security valve,
In raw water concentration process, when pressure is more than preset value before the high-pressure pump, the security valve is opened, and avoids high-pressure pump from damaging and manage
Road Decrepitation Phenomena.
Preferably, general control system uses low-voltage distribution, and the voltage class of power supplying and distributing equipment is 220VAC, and sets low pressure and match somebody with somebody
Electric cabinet, powered to process system power-equipment；Power switch in control system is protected with electrical control cubicles gate interlock, can be reached anti-
Dirt, rapid heat dissipation and the effect being easily installed.
Preferably, the front end of the self priming pump is provided with safety valve, is provided with liquid level sensor in the water tank, its water level is in water
During 4/5 volume of case, the safety valve is opened, and self priming pump shuts down, and avoids cistern water level too high.
Compared with prior art the beneficial effect comprise that：
(1) provided by the present invention for extracting, the device structure of hydrophobic humic acid in water body is simple, automaticity is high, behaviour
Facilitate, extract the humic acid of high-purity, preferably utilize extracted humic acid；
(2) the one-level precision Filter element aperture in the present invention is 1 μm, and two level precision Filter element aperture is 0.45 μm, more effectively
The impurity such as suspension of larger particles in water has been filtered out, particle debris has preferably been avoided and scratches, blocks and high to caused by film
Pressure impact；
(3) whole process of pH value is full automatic in the present apparatus, saves labour, reduces production cost, modulation
PH value accuracy rate it is higher；
(4) optimum ratio of concentrated water amount of the waste liquid amount discharged in nanofiltration separation upgrading unit in nano-filtration unit with discharging is
2:1-1:2, so waste liquid discharge can be avoided excessive or it is too small to caused by film injury or unit efficiency reduce；
The bottom of (5) first water tanks and the second water tank is funnel shaped, and the pipeline stretched into water tank is externally provided with filtering
Cover, not only contributes to the outflow of organic matter, is also beneficial to precipitate the impurity in organic matter；Organic matter is by membrane filtration, not only
The impurity in organic matter can be removed, the humic acid of high-purity can also be extracted.
Brief description of the drawings
Fig. 1 is a kind of structural representation for being used to extract the equipment of hydrophobic humic acid in water body of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail.
Join shown in Fig. 1, Fig. 1 is the process chart that the present invention is used to extract the equipment of hydrophobic humic acid in water body.This hair
The humic acid extraction element of bright offer, including the regulation of raw water feed unit, pretreatment unit, nanofiltration upgrading unit, acid-base value are single
Member, organic matter extraction unit, the first water tank 7, general control system 4, the second water tank 15, pH value automatic adjustment unit and humic acid carry
Take unit；Wherein raw water feed unit mainly includes self priming pump 1；Pretreatment unit includes one-level precision micro-filtration filter 2 and two
The accurate micro-filtration filter 3 of level；Nanofiltration upgrading unit includes nano-filtration unit 9, high-pressure pump 8 and dissolved organic carbon on-Line Monitor Device,
Wherein nano-filtration unit 9 includes NF membrane and stainless steel putamina；Acid-base value adjustment unit includes PH sensor, metering dosing pump 5 and
Acid solution medicament dosing tank 6；Organic matter extraction unit includes adsorption and enrichment device 14, alkali lye chemical tank 13, the first elution device 12；
PH value automatic adjustment unit includes dosing pump, the first acid solution chemical tank 16 and the second acid solution chemical tank 17；Humic acid extraction unit
Including the second elution device 18, filter, vavuum pump 22 and liquid memory 23, wherein filter includes sample room 19, filter membrane
20 and core 21, filter membrane 20 be located in sample room 19, and supported by core 21；General control system 4 is mainly used and automatically controlled, its
In collection control operate it is unified in switch board carry out, can realize whole system and automatically control operation and manually operated.
The entrance of wherein one-level precision micro-filtration filter 2 is connected with the outlet of self priming pump 1, one-level precision micro-filtration filter 2
Outlet be connected with the entrance of two level precision micro-filtration filter 3, outlet and the first water tank 7 of two level precision micro-filtration filter 3 connect
Connect；Dosing pump 5 is measured between the first water tank 7 and acid solution chemical tank 6, measures the entrance and acid solution chemical tank 6 of dosing pump 5
Outlet connection, the outlet of metering dosing pump 5 are connected with the first water tank 7；Nano-filtration unit 10 is provided with original water inlet, concentrated water outlet and given up
Liquid is exported, and original water inlet is connected by high-pressure pump 8 with the first water tank 7, and concentrated water outlet is connected with the first water tank 7；Alkali lye chemical tank
13 outlet, the outlet of the first elution device 12 are connected with the entrance of adsorption and enrichment device 14；The entrance of adsorption and enrichment device 14
Outlet with the first water tank 7 is connected, and the outlet of adsorption and enrichment device 14 is connected with the second water tank 15；Set above second water tank 17
There is semitight lid, bottom is funnel shaped, and internal provided with agitator, pH probes and nitrogen inlet duct and gas outlet；Liquid stores up
The outlet of the entrance and filter of storage 23 is connected, and the entrance of filter is connected with the outlet of the second water tank 15, vavuum pump 22
Air entry is placed in the cavity of liquid memory 23；PH automatic adjustment units are connected with positioned at pH sensors in the second water tank, the
One acid solution chemical tank 16 is exported, the outlet of the second acid solution chemical tank 17 is connected by dosing pump with the second water tank 15；Master control
System 4 includes control unit and touch screen device, and control unit is connected with touch screen device, control unit and self priming pump 1, liquid level sensor,
PH sensors, metering dosing pump 5 and high-pressure pump 8 connect.
Raw water humic acid extraction element provided by the invention, its raw water water source are seawater or fresh water, the water quality requirement of raw water
For water quality turbidity within 100NTU, TOC value is within 1000mg/l, and electrical conductivity value is within 40000 μ S/cm；
The front end of self priming pump is provided with filter bag, and the aperture of filter bag is 10 μm.
General control system uses low-voltage distribution, and the voltage class of power supplying and distributing equipment is 220VAC, and sets low-voltage distribution cabinet, to
Process system power-equipment is powered.In addition, the switch board of independent operation is equipped with control system, and electric switch and electric member
Part is all concentrated in switch board, and power switch is protected with electrical control cubicles gate interlock, can be reached dust-proof, rapid heat dissipation and is easily installed
Effect.
General supply and start button are first turned on, makes whole system in running order, self priming pump 1 is drawn former by pipeline
Water, raw water are tentatively filtered by the filter bag for being 10 μm positioned at self priming pump front end aperture, the raw water after preliminary filtering
The one-level precision micro-filtration filter 2 that the supercharging of self priming pump 1 enters in pretreatment unit is once filtered to raw water, through once mistake
Raw water after filter carries out secondary filtering, the wherein filter in one-level precision micro-filtration filter 2 into two level precision micro-filtration filter 3
Core is 1 μm, and the filter core in two level precision micro-filtration filter 3 is 0.45 μm, and such a filter core diameter, which is set, can preferably filter out water
The impurity such as the suspension of middle larger particles, increase water quality, more effectively avoid particulate contaminant from scratching, block to caused by film and
Impacting with high pressure.In addition, precision Filter element needs to change in time, avoid blocking and cross multi-pollutant and gather cooperating microorganisms.
Raw water after the filtering of two-stage precise filtering device enters the first water tank 7 by connecting pipe, in the first water tank 7
Liquid level sensor the water level in water tank is detected, when water level reaches the 4/5 of water tank, liquid level sensor is to master control system
System sends liquid level signal, after general control system receives liquid level signal, sends control signal to self priming pump, it is stopped, i.e.,
Stop injecting raw water into the first water tank.
The NF membrane that raw water in first water tank 7 enters in nano-filtration unit 9 by the pressurization of high-pressure pump 8, NF membrane can will be light
Concentrated water and waste water are separated into water and seawater, the waste water of saliferous and small molecule organic matter through NF membrane is expelled directly out, in nanofiltration
The waste liquid outlet of unit 9 is provided with flow speed control valve, can adjust the speed that waste liquor stream goes out NF membrane, and its speed adjustable range is 0-
200L/h；Concentrated water through nanofiltration UF membrane is back in the first water tank 7 by pipeline, is connected in nano-filtration unit 9 with the first water tank 7
Pipeline is provided with flow speed control valve, can adjust the speed that concentrated stream goes out NF membrane, and its speed adjustable range is 0-200L/h；Waste water stream
Go out the speed of NF membrane and concentrated stream goes out the speed value of NF membrane and is arranged in appropriate scope, the waste liquid for discharging NF membrane
The ratio of amount and the concentrated water amount of discharge is 1:9-9:1, its optimum ratio is 1:2-2:1, the excessive velocities because of outflow can be avoided
Or injury or device efficiency reduce to caused by NF membrane slowly excessively.Concentrated water water tank inlet can circulate concentration, so repeatedly, first
Water in water tank is fewer and fewer, the concentration more and more higher of the content of organic matter, when the dissolved organic carbon on-line determination device in water tank
When the organic carbon content of measure reaches preset value, stop concentration, close concentration systems.
During raw water concentrates, avoid that cocnentration factor is too high, and cocnentration factor is higher as far as possible, saliferous rate and organic concentration are got over
Height, too high concentration can damage to NF membrane, therefore, by content of organic matter control in concentrated water in below 10000mg/L.
The pipeline of nano-filtration unit concentrated water discharge is provided with the first dissolved organic carbon on-line monitoring probe 11, nano-filtration unit discharge
The second dissolved organic carbon on-line monitoring probe 10 is provided with the pipeline of waste water, is visited by contrasting the first dissolved organic carbon on-line monitoring
First 11 and second dissolved organic carbon on-line monitoring probe 10 detection numerical value, it is possible to determine that NF membrane whether seepage；I.e. if
One dissolved organic carbon on-line monitoring probe 11 and the numerical value difference of the detection of the second dissolved organic carbon on-line monitoring probe 10 are less than pre-
If during value, it is possible to determine that Seepage occurs in NF membrane.The exit of nano-filtration unit concentrated water and waste water is additionally provided with security valve, in original
In water concentration process, when the dissolved organic carbon difference of nano-filtration unit concentrated water and waste water is less than preset value, security valve is opened, and is now
Unite out of service.
The front end of high-pressure pump 8 is provided with pressure gauge and security valve, during concentration, when water level is less than the 1/5 of water tank,
Security valve is opened, and high-pressure pump shuts down, it is possible thereby to avoid high-pressure pump causes high-pressure pump to burn phenomenon when dallying；Work as high pressure
When pressure before pump is more than preset value, security valve is opened, and can avoid high-pressure pump damage and pipeline burst phenomenon.
After raw water concentration terminates, start acid-base value adjustment unit.Required pH value is set in general control system 4, and it sets
Fixed pH value is 0.5-3, and this pH sensor signal is delivered into the pH sensors in water tank, and pH sensors believe pH value
Metering dosing pump 5 number is passed to, measures dosing pump startup, the acid solution in acid solution chemical tank 6 is passed through into acidproof spy by being pressurized
Different pipeline flows into the first water tank 7, while the stirring motor in the first water tank 7 starts so that acid solution and concentrated water uniformly mix, and carry out
PH value is adjusted, and when pH value reaches the value pre-set, the metering water tank stirring motor of dosing pump 5 and first is stopped.
The process of whole pH value regulation is full automatic, saves labour, reduces production cost, and the pH modulated
The accuracy of value is higher, and the process efficiency of preparation is also higher.PH regulation during, using stirring the first water tank in water,
Flow into acid solution medicament therein uniformly to dissolve in water, local pH value can be avoided higher or relatively low.
After the completion of pH value regulation, the outlet valve of the first water tank 7 is opened, the concentrated water in the first water tank 7 flows into adsorption and enrichment
Device 14, the filler in adsorption and enrichment device adsorb to the organic matter in concentrated water；After the completion of absorption, the first water tank 7 is closed
Outlet valve, open the opening valve of the first elution device 12, while open the waste liquid waste cock of adsorption and enrichment device 14,
Pure water in first elution device 12 is rinsed by pipeline to adsorption and enrichment device 14, is effectively removed miscellaneous in organic matter
Matter, the waste liquid of flushing are discharged by waste liquid discharge line.
After the completion of flushing, the outlet valve of the first elution device 12 is closed, closes waste liquid waste cock；Open alkali lye medicament
The outlet valve of case 13, the alkali lye in alkali lye chemical tank 13 flow through adsorption and enrichment device 14, adsorption and enrichment device 14 by pipeline
In polymeric adsorbent absorption the interaction of organic matter and alkali lye after desorb, the organic matter after desorption passes through pipeline inflow the
In two water tanks 15.
Adsorption and enrichment device 14 includes adsorption column and filler, and wherein filler is located at the interior of adsorption column, using XAD-8 trees
The one or more of fat, DAX-8 resins and XAD-7 resins, the DOM composition such as humic acid, fulvic acid can be adsorbed, is obtained
Take the organic matter liquid that concentration is higher.
PH automatic adjustment units are opened, the signal of detection is sent to pH adjustment units, dosing pump startup acid solution by pH probes
Program is added, is pressed through dosing pump, acid solution is extracted by the first acidproof special pipeline to the second water from the first acid solution chemical tank 16
Non-oxidizable acid solution is injected in case 15, while the stirring motor in the second water tank 15 starts so that acid solution and organic matter uniformly mix
Close, carry out pH value regulation, until pH value reaches the value pre-set, first of acid liquid program stopped work of dosing pump；Dosing
Pump injects hydrogen by extracting hydrofluoric acid from the second acid solution chemical tank 17, by the second acidproof special pipeline into the second water tank 15
Fluoric acid, the concentration until reaching default hydrofluoric acid, dosing pump are stopped.PH sensors in second water tank 15 are provided with lifting
Platform, after the completion of pH value regulation, lifting platform can rise to pH sensors on the water surface.
Pipeline between second water tank 15 and filter gos deep into water tank, is sealing structure at the top of pipeline, duct wall is provided with
Multiple apertures are 50 μm of hole, and the minimum altitude in hole is controlled at the 1/10 of tank height, and the tank pipe that stretches into is externally provided with
Filter mantle, the aperture of the filter mantle is 100 μm, is more beneficial for precipitating the impurity in concentrated water；Nitrogen is additionally provided with second water tank
Feedway, it can prevent humic acid from aoxidizing in the basic conditions.
After humic acid solution in second water tank 15 stirs 24 hours, the outlet valve of the second water tank 15 is opened, is opened simultaneously
Dynamic vavuum pump 22, is pressed by vavuum pump 22, and the organic matter in the second water tank 15 passes through in filter influent holder 23, has
Machine matter is filtered by filter, and hydrophobic humic acid is left on above the filter membrane 20 in filter, and impurity flows into liquid memory 23
In.
After organic matter completes filtering, the outlet valve of the second water tank 15 is closed, opens the outlet valve of the second elution device 18
, the pure water in the second elution device 18 flows through filter by pipeline, and filter membrane 20 is rinsed, and the waste liquid after flushing flows into
Liquid memory 23；After the completion of flushing, the liquid in liquid memory 23 directly discharges, and the organic matter stayed on filter membrane is institute
The humic acid that need to be extracted.
After humic acid extraction terminates, the discharge outlet of the first water tank is closed, the pure water in the first elution device pours into the first water
Case, start concentration, concentrated water valve is reached into maximum, the cleaning of NF membrane is realized to washing away for film using pure water.NF membrane is forbidden to do
Dry storage, it is necessary to assure have water in putamina, if for some reason more than 70h without using NF membrane should being soaked in clean water, if long
Phase leaves unused and must sealed up for safekeeping by NF membrane requirement storage mode.
It is disposable filter membrane that the water body hydrophobic, which dissolves humic acid extraction unit using filter membrane, and filter membrane needs to be resistant to 0.2-
0.4mol/L strong acid, filter membrane are stored and used on request, but the siliceous filter membrane such as unusable glass fiber filter.
A series of detailed description described above illustrates only for the feasibility embodiment of the present invention,
They are not to limit the scope of the invention, in the technical field those of ordinary skill possessed knowledge
Interior, the various change made on the premise of present inventive concept is not departed from belongs to protection scope of the present invention.
Claims (10)
1. a kind of equipment for extracting hydrophobic humic acid in water body, including raw water feed unit, pretreatment unit, nanofiltration concentration
Unit, acid-base value adjustment unit, organic matter extraction unit, the first water tank, general control system, the second water tank, pH value automatically adjust
Unit and humic acid extraction unit；
The entrance of the pretreatment unit is connected with the raw water feed unit, the outlet of pretreatment unit and first water tank
Entrance connection；The entrance of the organic matter extraction unit is connected with the outlet of first water tank, organic matter extraction unit
Outlet is connected with the entrance of second water tank；The outlet of second water tank is connected with the humic acid extraction unit；It is described
First water tank is also connected with the acid-base value adjustment unit and nanofiltration upgrading unit；Second water tank is also automatic with the pH value
Adjustment unit connects；The general control system and the raw water feed unit, acid-base value adjustment unit, nanofiltration upgrading unit and pH
It is worth automatic adjustment unit connection；
The pH value automatic adjustment unit includes pH sensors, the first acid solution chemical tank, the second acid solution chemical tank and dosing pump；Institute
PH sensors are stated in second water tank, the first acid solution chemical tank and the second acid solution chemical tank are arranged in juxtaposition,
The outlet of the first acid solution chemical tank, the outlet of the second acid solution chemical tank pass through company of the dosing pump with second water tank
Connect；
The humic acid extraction unit includes the second elution device, liquid memory, filter and vavuum pump；The filter
Entrance respectively with the exporting of second water tank, the outlet of second elution device is connected, the outlet of the filter and liquid
Body holder entrance connects；The filter includes sample room, filter membrane and core, and the filter membrane is placed within the sample room,
And filter membrane supporter is used as using the core；The aperture span of the filter membrane is 0.1-0.7 μm；The outlet of the vavuum pump
It is connected with the liquid memory.
2. the equipment as claimed in claim 1 for being used to extract hydrophobic humic acid in water body, it is characterised in that the raw water supply
Unit includes self priming pump, for extracting raw water；The pretreatment unit includes one-level precision micro-filtration filter and two level precision is micro-
Filter is filtered, the aperture of precision Filter element is 0.45 μm in one-level precision micro-filtration filter, accurate in two level precision micro-filtration filter
The aperture of filter core is 0.22 μm；The entrance of the one-level precision micro-filtration filter is connected with the outlet of the self priming pump, one-level essence
The outlet of close micro-filtration filter is connected with the entrance of two level precision micro-filtration filter, the outlet of two level precision micro-filtration filter and the
One water tank connects.
3. it is used for the equipment for extracting hydrophobic humic acid in water body as claimed in claim 2, it is characterised in that first water tank is adopted
With acid resisting material, it is provided with closure above, is provided with agitator, liquid level sensor and pH sensors in it；The closure
End face is provided with least five through hole；Pipeline between first water tank and the adsorption and enrichment device is stretched into water tank, pipeline top
Portion is sealing structure, and duct wall is provided with the hole that multiple apertures are 50 μm, and the minimum altitude in hole is controlled at the 1/10 of tank height,
The tank pipe that stretches into is externally provided with filter mantle, and the aperture of the filter mantle is 100 μm；
Second water tank uses acid resisting material, and it is provided with closure above, and lower end is funnel shaped, in it provided with agitator,
Liquid level sensor and pH sensors；The end face of the closure is provided with least five through hole；Second water tank and the filter
Between pipeline stretch into water tank, be sealing structure at the top of pipeline, duct wall is provided with multiple apertures as 50 μm of hole, hole it is minimum
Highly control is at the 1/10 of tank height, and the tank pipe that stretches into is externally provided with filter mantle, and the aperture of the filter mantle is 100
μm；Second water tank is provided with nitrogen feedway, prevents humic acid from aoxidizing in the basic conditions.
4. it is used for the equipment for extracting hydrophobic humic acid in water body as claimed in claim 3, it is characterised in that the nanofiltration concentration is single
Member includes nano-filtration unit, high-pressure pump, the first dissolved organic carbon on-line monitoring probe and the second dissolved organic carbon on-line monitoring probe；
Wherein nano-filtration unit includes NF membrane and stainless steel putamina, and the aperture value of the NF membrane is 1-2nm；
The first dissolved organic carbon on-line monitoring probe is located at the concentrated water exit of the nano-filtration unit, the second dissolved organic carbon
On-line monitoring probe is at the wastewater outlet of nano-filtration unit；
The nano-filtration unit is provided with original water inlet, concentrated water outlet and waste liquid outlet；The original water inlet passes through high-pressure pump and first
Water tank is connected, and the concentrated water outlet is connected with the first water tank；The nano-filtration unit concentrated water outlet is equipped with security with wastewater outlet
Valve.
5. it is used for the equipment for extracting hydrophobic humic acid in water body as claimed in claim 4, it is characterised in that acid-base value adjustment unit
Include pH sensors, agitator, metering dosing pump and acid solution chemical tank；The pH sensors are located in the first water tank, described
Measure dosing pump to be located between the first water tank and acid solution chemical tank, the outlet of the entrance and acid solution chemical tank that measure dosing pump connects
Connect, the outlet for measuring dosing pump is connected with the first water tank.
6. it is used for the equipment for extracting hydrophobic humic acid in water body as claimed in claim 1, it is characterised in that the organic matter extraction
Unit includes adsorption and enrichment device, the first elution device and alkali lye chemical tank, the first elution device and alkali lye chemical tank cloth arranged side by side
Put；The entrance of the outlet of first elution device, the outlet of alkali lye chemical tank with adsorption and enrichment device is connected, the adsorption and enrichment
The entrance of device is connected with the outlet of the first water tank, and the outlet of adsorption and enrichment device is connected with the second water tank, and its bottom is provided with
The waste cock of flushing liquor；
The adsorption and enrichment device includes adsorption column and filler, and for the filler in the adsorption column, the filler is XAD-8
The one or more of resin, DAX-8 resins and XAD-7 resins.
7. it is used for the equipment for extracting hydrophobic humic acid in water body as claimed in claim 5, it is characterised in that the general control system
Including control unit and touch screen device, described control unit is connected with touch screen device, described control unit and self priming pump, level sensing
Device, pH sensors, metering dosing pump, high-pressure pump connect with pH value automatic adjustment unit；Liquid level sensor and the pH sensor
In first water tank；1/5-4/5 of the height of water level control of first water tank in tank height.
8. carry out humic acid extraction using any described equipment for being used to extract hydrophobic humic acid in water body of claim 1-7
Method, it is characterised in that it comprises the following steps：
(1) the general supply start button of general control system is started；
(2) self priming pump start button is started, 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 filtering, the one-level precision micro-filtration filter that the raw water after filtering is entered in pretreatment unit by the supercharging of self priming pump is to original
Water is once filtered, and the raw water after once filtering enters two level precision micro-filtration filter and carries out secondary filtering；After filtering
Raw water the first water tank is entered by pipeline；When water level in first water tank reaches 4/5 tank height, self priming pump is stopped；
Raw water in (3) first water tanks is pressurized through high-pressure pump enters nano-filtration unit by pipeline, and NF membrane can be in raw water
Natural DOM is concentrated, and obtains waste water and concentrated water；By the direct discharging of waste water of NF membrane, concentrated water is recycled into
One water tank, when the content of the organic carbon of the dissolved organic carbon on-line monitoring probe measure in the first water tank reaches preset value
When, stop concentration；
(4) acid-base value adjustment unit is started, metering dosing pump reception pH sensor signal startups pass through acidproof from acid solution chemical tank
Pipeline injects acid solution into the first water tank, while stirring motor starts in the first water tank so that acid solution uniformly mixes with concentrated water, directly
Default pH value is reached, dosing pump is measured and the first water tank stirring motor is stopped；
(5) complete the concentrated water after pH value regulation and adsorption and enrichment device is flowed into by pipeline, after the completion of absorption, open the first elution dress
The outlet valve put, the pure water in the first elution device open adsorption and enrichment device by pipe flushing adsorption and enrichment device
The waste liquid waste cock of bottom, flushing waste are discharged by pipeline, complete the flushing of adsorption and enrichment device, are closed waste liquid discharge and are opened
Close；
(6) after completing the flushing of adsorption and enrichment device, the outlet valve of the first elution device is closed, opens the outlet of alkali lye chemical tank
Valve, alkali lye chemical tank inject alkali lye by alkaline-resisting pipeline into adsorption and enrichment device, organic by the naturally dissolving of resin adsorption
Matter desorbs in the presence of alkali lye, and efflux flows into the second water tank through piping；
(7) pH automatic adjustment units are started, the detection signal that pH automatic adjustment units receive pH sensors starts acid solution addition journey
Sequence, pressed through dosing pump, from the first acid solution chemical tank extract acid solution injected into the second water tank by the first acid-resistant pipeline it is non-oxygen
The property changed acid solution, while stirring motor starts in the second water tank so that acid solution and organic matter uniformly mix, until reaching default pH
Value, the work of first passage acid liquid program stopped；
Pressed through dosing pump, hydrofluoric acid is extracted from the second acid solution chemical tank, noted by the second acid-resistant pipeline into the second water tank
Enter hydrofluoric acid, until the liquid in the second water tank reaches default hydrofluoric acid concentration, dosing pump is stopped；
(8) outlet valve of the second water tank is opened, while starts vavuum pump, is pressed by vavuum pump, it is organic in the second water tank
Matter is passed through in filter influent holder, and organic matter is left on above filter membrane by membrane filtration, hydrophobic humic acid, trash flow
Enter in liquid memory；
(9) after organic matter completes filtering, the outlet valve of the second water tank is closed, opens the outlet valve of the second elution device, the
Pure water in two elution devices is rinsed by pipeline inflow filter to filter membrane；After the completion of flushing, in liquid memory
Liquid directly discharges, and the organic matter stayed on filter membrane is the required humic acid extracted.
9. hydrophobic dissolves humic acid extracting method in water body as claimed in claim 8, it is characterised in that the nano-filtration unit is given up
The discharge line of water is provided with flow speed control valve, and concentrated water discharge line is provided with flow speed control valve, the wastewater flow rate of nano-filtration unit discharge and discharge
Concentrated water amount ratio be 1:9-9:1.
10. hydrophobic dissolves humic acid extracting method in water body as claimed in claim 8, it is characterised in that the acid-resistant pipeline
With the degree of the first acid-resistant pipeline can bear be 10mol/L strong acid；Alkali lye in the alkali lye chemical tank is 0.1mol/L's
Sodium hydroxide；The degree of the alkaline-resisting pipeline can bear 0.1mol/L highly basic；The degree of second acid-resistant pipeline can bear 6mol/
L hydrofluoric acid；Nitration mixture concentration in second water tank is 0.001-1mol/L hydrochloric acid and 0.1-0.5mol/L hydrofluoric acid；It is described
PH preset values are 0.5-3.
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