CN109502873A - Device and method for treating heavy metal ions in wastewater - Google Patents
Device and method for treating heavy metal ions in wastewater Download PDFInfo
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- CN109502873A CN109502873A CN201811368530.6A CN201811368530A CN109502873A CN 109502873 A CN109502873 A CN 109502873A CN 201811368530 A CN201811368530 A CN 201811368530A CN 109502873 A CN109502873 A CN 109502873A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention belongs to the technical field of wastewater treatment, and discloses a device and a method for treating heavy metal ions in wastewater. The device for treating the heavy metal ions in the wastewater forms closed-loop circulation by connecting the water pump with the water outlet of the water tank and sequentially arranging the water bath heating device, the horizontal and vertical permanent magnets, the valve and the flowmeter along the wastewater flow direction, and prepares conditions for magnetization and adsorption, and has the advantages of simple structure and convenient operation. And a filter is arranged on a filtering outlet at the bottom of the water tank, a filtering valve is arranged on a water outlet pipeline, and the ion exchange resin is filtered after adsorption is finished. The method firstly adopts a magnetization means to magnetize the wastewater containing the heavy metal ions, and adopts the circulation magnetization of the wastewater under a lower flow velocity to improve the number of hydrogen bonds in the system, so that the adsorption efficiency and the adsorption rate can be realized when the resin is promoted to be independently and dynamically adsorbed at a lower temperature.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to it is a kind of handle heavy metal ions in wastewater device and side
Method.
Background technique
Non-ferrous metal metallurgy consumes a large amount of water, consequently also just produces a large amount of smelting sewage.Non-ferrous metals smelting works
Waste water usually simultaneously containing various metals ion and nuisance and also comparison of ingredients it is complicated.These pollutant components are discharged into environment
In go that form can only be changed or be transferred, dilute, accumulate, cannot but degrade, therefore not only result in the loss of a large amount of metals,
It seriously polluted water source and water resource, threaten the health of people.Heavy metal ion-containing waste water results from mine, smelts and add
In a series of industry of processing and utilization non-ferrous metals such as work plating.The processing method of heavy metal ion-containing waste water mainly has: displacement
Method, ion-exchange, chemical neutralisation, absorption method.Ion exchange technique is a kind of liquid phase component isolation technics, is had excellent
Separation selectivity and very high cycles of concentration, easy to operate, effect is prominent.Therefore it may be implemented from waste water using ion exchange
Heavy-metal ion removal or separate substance.Ion exchange resin, can be more preferable to the Selective Separation of heavy metal ions in wastewater
The processing of heavy metal ions in wastewater and the recycling of heavy metal ion are realized in ground, have emphatically for the application of heavy metal containing wastewater treatment
The meaning wanted, low to wastewater treatment ion exchange exchange adsorption speed and capacity using ion exchange resin merely, ion exchange
The regeneration times of agent are more, are based on this, and magnetic field of the present invention and ion exchange resin combination processing waste water can improve to the maximum extent
The utilization efficiency in magnetic field, is of great significance for wastewater treatment.
Summary of the invention
The problem of the purpose of the present invention is to solve the processing of heavy metal ion-containing waste water in the prior art, mentions
A kind of device of preferable, the lower-cost processing heavy metal ions in wastewater of adsorption effect is supplied.
In order to achieve the above object, the invention adopts the following technical scheme:
A kind of device handling heavy metal ions in wastewater, including sink, the water outlet of sink are connected with water pump, the outlet of water pump
It is connected with circulation line, is flowed on circulation line along waste water and is sequentially arranged with water bath heating device, the first permanent magnet, the second permanent magnetism
Body, circulation valve and flowmeter, and the water inlet of circulation line and sink connects, the bottom of sink is additionally provided with filtering outlet, mistake
It filters exit and filter device is housed, filtering outlet is connected with outlet pipeline, Filter valve, the first permanent magnet are housed on outlet pipeline
Magnetic induction line direction it is parallel with liquid flow direction, the magnetic induction line direction of the second permanent magnet is vertical with liquid flow direction.
Another object of the present invention is to provide a kind of methods for handling heavy metal ions in wastewater, including following step
It is rapid:
(1) circulation valve is opened, sink will be poured into wastewater from copper smelter and fill it up with sink, and be then turned on water pump and heating water bath
Device, at 25 DEG C -35 DEG C, the magnetic field strength of the permanent magnet of horizontal alignment is 3T-3.5T for the temperature control of water bath heating device, the
The magnetic field strength of two permanent magnets is 0.5T-1.5T, and the pH range of accessible waste water is 5-8, will be managed using circulation valve later
Water speed in road is adjusted to 0.2 m/s -0.5m/s；
(2) waste water starts the cycle over magnetization, magnetizing time t after the completion of debugging1, and t1=it is greater than or is equal to V1/ Sv, wherein V1For
The volume of sink, S are the sectional area of circulation line, and v is water speed；
(3) heavy metal ion after the completion of magnetizing in waste water is thoroughly magnetized, and is removed the second permanent magnet later, is left the first permanent magnetism
Body；
(4) ion exchange resin is added after in the sink to start to adsorb the heavy metal ion in waste water, and the ion being added is handed over
The mass ratio of the weight and heavy metal ions in wastewater of changing resin is 1:1-3:1；Adsorption temp is 25 DEG C -35 DEG C, adsorption time
Are as follows: 20 min -30min；
(5) it after the completion of adsorbing, switches off the pump and circulation valve and stands 10 min -30min, open Filter valve after standing,
Ion exchange resin stays in the sink, and filtered water is flowed out along outlet pipeline.
(6) after the completion of filtering, then clear water is added in the sink and opens water pump and circulating valve for collection of ions exchanger resin
Door washing pipeline.
Further, the first permanent magnet and the second permanent magnet are all made of the horizontal tube wall for being distributed and being directly installed on circulation line
On.
Further, the ion exchange resin recoverable in step (5) after the completion of absorption.
Further, water bath heating device is water-bath heater.
Further, filter device is filter paper, and filter paper is installed at the entrance of Filter valve.
The present invention compared with the existing technology, have the utility model has the advantages that
The device of processing heavy metal ions in wastewater of the invention by the water outlet in sink is connected with water pump and along waste water stream
To water bath heating device, the first permanent magnet, the second permanent magnet, circulation valve and flowmeter is sequentially arranged with, closed loop cycle is constituted, is
Magnetization and absorption have prepared condition, and structure is simple, easy to operate.Filter is installed on the filtering outlet of bottom of gullet and is being gone out
Filter valve is installed, the filter ions exchanger resin after the completion of absorption in water lines.
Magnetic field first magnetizes heavy metal wastewater thereby in processing method of the invention, and the flow velocity of recirculated water will be set as the original of smaller value
When because being that recirculated water flows through magnetic field with low speed, magnetized effect is more sufficiently a bit.Due to the magnetism of heavy metal ions in wastewater
Difference, by the magnetic induction line direction horizontal magnetic field parallel with liquid flow direction by paramagnetism concentration gradient power and magnetic field gradient
The effect of power, the effect by the magnetic induction line direction magnetic field vertical with liquid flow direction by Loulun magnetism, the two combine just
The separation that ion can be achieved can produce wastewater treatment the variation of matter, remove magnetic induction line direction after the completion of magnetization in this method
Second permanent magnet vertical with liquid flow direction recycles the Dynamic Adsorption effect processing heavy metal ion of ion exchange resin,
Since most of ion exchange resin are all negatively charged, heavy metal ion is positively charged, so positive negative charged particles move in magnetic field
Understand Yin Luolun magnetic force and separate, to influence adsorption effect, removing the magnetic induction line direction magnetic field vertical with liquid flow direction can
Adsorption effect is influenced to avoid long-range navigation magnetic force, in addition, magnetic treatment has memory effect, magnetic efficiency is probably able to maintain 4-8h,
Therefore, removing the magnetic induction line direction magnetic field vertical with liquid flow direction after magnetization can be improved the rate of adsorption and adsorption capacity,
Furthermore also facilitate the recycling of ion exchange resin, in entire magnetization and adsorption process, magnetic induction line direction and liquid flow direction are flat
Capable horizontal magnetic field can promote the selective absorption of ion exchange resin, and Filter valve is in closing always in the process
State.This method first uses magnetization means to magnetize the waste water containing heavy metal ion, using compared with cyclic magnetization waste water under low flow velocity
Can hydrogen bond quantity in raising system, it can be achieved that adsorption efficiency and suction when promoting the independent Dynamic Adsorption of resin at a lower temperature
Attached rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the device of the invention.
Appended drawing reference meaning is as follows: 1. sinks；2. water pump；3. water bath heating device；4. the first permanent magnet；5. second
Permanent magnet；6. circulation valve；7. flowmeter；8. filter device；9. Filter valve.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
As shown in Figure 1, a kind of device for handling heavy metal ions in wastewater, including sink 1, the water outlet connection of sink 1
There is water pump 2, the outlet of water pump 2 is connected with circulation line, and the caliber of entire circulation line is all the same, along waste water stream on circulation line
To being sequentially arranged with water bath heating device 3, the first permanent magnet 4, the second permanent magnet 5, circulation valve 6 and flowmeter 7, and circulation line
It is connect with the water inlet of sink 1, the bottom of sink 1 is additionally provided with filtering outlet, and filter device 8 is housed at filtering outlet, is filtered out
Mouth is connected with outlet pipeline, Filter valve 9 is housed, filter device 8 is filter paper, and filter paper is installed at strainer valve on outlet pipeline
The entrance of door 8.Water bath heating device 3 is water-bath heater.First permanent magnet 4, the second permanent magnet 5 are that magnetic field is adjustable forever
The magnetic field strength adjustable extent of magnet, the first permanent magnet 4 is 3T-3.5T, and the magnetic field strength adjustable extent of the second permanent magnet 5 is
0.5T-1.5T.The magnetic induction line direction of first permanent magnet 4 is parallel and identical with liquid flow direction, the magnetic induction line of the second permanent magnet 5
Direction is vertical with liquid flow direction.
Embodiment 1
A method of processing heavy metal ions in wastewater, comprising the following steps:
(1) circulation valve 6 is opened, copper-containing wastewater is filled it up with to sink 1, water pump 2 and water bath heating device 3, water-bath are then turned on
The temperature control of heating device 3 is at 25 DEG C, and the magnetic field strength of the permanent magnet 4 of horizontal alignment is 3T, and the magnetic field of the second permanent magnet 5 is strong
Degree is 0.5T, and the first permanent magnet 4 and the second permanent magnet 5 are all made of horizontal distribution and are directly installed on the tube wall of circulation line.The
The magnetic induction line direction of one permanent magnet 4 is parallel and identical with liquid flow direction, the magnetic induction line direction of the second permanent magnet 5 and liquid flow
Dynamic direction is vertical.The pH of waste water is 5, cooperates flowmeter 7 that the water speed in pipeline is adjusted to 0.2 m/s using circulation valve 6 later.
(2) waste water starts the cycle over operation magnetization, V after having debugged equipment1For 4m3, pipe section product S is 0.02m2, water speed v
For 0.2m/s, wherein V1For the volume of sink 1, S is the sectional area of circulation line, and v is water speed, then the magnetized time t of waste water1For
1000s。
(3) heavy metal ion after the completion of magnetizing in waste water is thoroughly magnetized, and is removed the second permanent magnet 5, is left first forever
Magnet 4.
(4) after according to Cu ion in the ion exchange resin weight and waste water of addition mass ratio for 1:1 ratio to
D851 type ion exchange resin 40g is added in sink 1, adsorption temp is 25 DEG C, adsorption time are as follows: the resin of 30min, 0.1g
It is 150mg/L that Cu solion concentration, which can be handled,.
(5) after the completion of adsorbing, switching off the pump 2 and circulation valve 6 and stands 10 min, and Filter valve 9 is opened after standing,
Ion exchange resin, which is filtered, have been stayed in sink 1, and filtered water is flowed out along outlet pipeline, and the ion after the completion of adsorbing is handed over
Change resin recoverable.
(6) after the completion of filtering, clear water is added in sink 1 and opens 6 washing pipeline of water pump 2 and circulation valve.
Embodiment 2
A method of processing heavy metal ions in wastewater, comprising the following steps:
(1) circulation valve 6 is opened, copper-containing wastewater is filled it up with into sink 1, is then turned on water pump 2 and water bath heating device 3, water-bath adds
The temperature control of thermal 3 is at 30 DEG C, and the magnetic field strength of the permanent magnet 4 of horizontal alignment is 3.2T, and the magnetic field of the second permanent magnet 5 is strong
Degree is 1T, and the first permanent magnet 4 and the second permanent magnet 5 are all made of horizontal distribution and are directly installed on the tube wall of circulation line.First
The magnetic induction line direction of permanent magnet 4 is parallel and identical with liquid flow direction, and the magnetic induction line direction of the second permanent magnet 5 and liquid flow
Direction is vertical.The pH value of waste water is 6, cooperates flowmeter 7 that the water speed in pipeline is adjusted to 0.25m/ using circulation valve 6 later
s。
(2) waste water starts the cycle over operation magnetization, V after the completion of debugging1For 4m3, pipe section product S is 0.02m2, water speed v is
0.25m/s, wherein V1For the volume of sink 1, S is the sectional area of circulation line, and v is water speed, then the time t of wastewater treatment1For
800s。
(3) heavy metal ion after the completion of magnetizing in waste water is thoroughly magnetized, and is removed the second permanent magnet 5, is left first forever
Magnet 4.
(4) add according to the ratio that the mass ratio of Cu ion in the quality and waste water of ion exchange resin is 2:1 into sink 1 after
Enter the ion exchange resin 120g of D851 type, adsorption temp is 30 DEG C, adsorption time are as follows: the resin of 25min, 0.1g can be handled
Cu solion concentration is 205mg/L.
(5) after the completion of adsorbing, switching off the pump 2 and circulation valve 6 and stands 20 min, and Filter valve 9 is opened after standing,
Ion exchange resin, which is filtered, have been stayed in sink 1, and filtered water is flowed out along outlet pipeline, and the ion after the completion of adsorbing is handed over
Change resin recoverable.
(6) after the completion of filtering, clear water is added in sink 1 and opens 6 washing pipeline of water pump 2 and circulation valve.
Embodiment 3
A method of processing heavy metal ions in wastewater, comprising the following steps:
(1) circulation valve 6 is opened, sink 1 will be poured into wastewater from copper smelter and fill it up with sink 1, and be then turned on water pump 2 and water-bath
Heating device 3, at 35 DEG C, the magnetic field strength of the first permanent magnet 4 of horizontal alignment is for the temperature control of water bath heating device 3
3.5T, the magnetic field strength of the second permanent magnet 5 are 1.5T, and it is direct that the first permanent magnet 4 and the second permanent magnet 5 are all made of horizontal distribution
It is installed on the tube wall of circulation line.The magnetic induction line direction of first permanent magnet 4 is parallel and identical with liquid flow direction, and second forever
The magnetic induction line direction of magnet 5 is vertical with liquid flow direction.The pH value of waste water is 7, cooperates flow using circulation valve 6 later
Water speed in pipeline is adjusted to 0.5 m/s by meter 7.
(2) waste water starts the cycle over operation magnetization, V after the completion of debugging1For 4m3, pipe section product S is 0.02m2, water speed v is
0.5m/s. magnetizing time is t1, wherein V1For the volume of sink 1, S is the sectional area of circulation line, and v is water speed, then waste water magnetic
The time t of change1For 400s.
(3) heavy metal ion after the completion of magnetizing in waste water is thoroughly magnetized, and is removed the second permanent magnet 5, is left first forever
Magnet 4.
(4) according to the ratio that the mass ratio of Cu ion in the quality and waste water of ion exchange resin is 3:1 to sink 1 after
Ion exchange resin 120g is added in the middle ion exchange resin that D851 type is added, and adsorption temp is 30 DEG C, adsorption time are as follows:
It is 205mg/L that the resin of 25min, 0.1g, which can handle Cu solion concentration,.
(5) after the completion of adsorbing, switching off the pump 2 and circulation valve 6 and stands 30 min, and Filter valve 9 is opened after standing,
Ion exchange resin, which is filtered, have been stayed in sink 1, and filtered water is flowed out along outlet pipeline, and the ion after the completion of adsorbing is handed over
Change resin recoverable.
(6) after the completion of filtering, clear water is added in sink 1 and opens 6 washing pipeline of water pump 2 and circulation valve.
Embodiment 4
A method of processing heavy metal ions in wastewater, comprising the following steps:
(1) circulation valve 6 is opened, sink 1 will be poured into wastewater from copper smelter and fill it up with sink 1, and be then turned on water pump 2 and water-bath
Heating device 3, at 35 DEG C, the magnetic field strength of the first permanent magnet 4 of horizontal alignment is 0T for the temperature control of water bath heating device 3,
The magnetic field strength of second permanent magnet 5 is 0T, and the pH value of waste water is 7, cooperates flowmeter 7 by pipeline using circulation valve 6 later
In water speed be adjusted to 0.5 m/s.
(2) ratio for being 3:1 according to the mass ratio of Cu ion in the quality and waste water of ion exchange resin after debugging is completed
The ion exchange resin of D851 type is added into sink 1 for example, and ion exchange resin 120g is added, and adsorption temp is 30 DEG C, absorption
Time are as follows: 25min, V1For 4m3, pipe section product S is 0.02m2, water speed v is that 0.5m/s. runing time is t1, wherein V1For water
The volume of slot 1, S are the sectional area of circulation line, and v is water speed, due to t1For 400s < adsorption time are as follows: 25min.So
It is 102mg/L that the resin that 0.1g is measured after 25min, which can handle Cu solion concentration,.
(5) after the completion of adsorbing, switching off the pump 2 and circulation valve 6 and stands 30 min, and Filter valve 9 is opened after standing,
Ion exchange resin, which is filtered, have been stayed in sink 1, and filtered water is flowed out along outlet pipeline, and the ion after the completion of adsorbing is handed over
Change resin recoverable.
(6) after the completion of filtering, clear water is added in sink 1 and opens 6 washing pipeline of water pump 2 and circulation valve.
Claims (6)
1. a kind of device for handling heavy metal ions in wastewater, it is characterized in that: including sink (1), the water outlet of sink (1) is connected
Have water pump (2), the outlet of water pump (2) is connected with circulation line, is sequentially arranged with heating water bath along waste water flow direction on circulation line and fills
Set (3), the first permanent magnet (4), the second permanent magnet (5), circulation valve (6) and flowmeter (7), and circulation line and sink (1)
Water inlet connection, the bottom of sink (1) is additionally provided with filtering outlet, filter device (8) is housed at filtering outlet, and filtering outlet connects
It is connected to outlet pipeline, Filter valve (9) are housed on outlet pipeline, the magnetic induction line direction and liquid flowing side of the first permanent magnet (4)
To parallel, the magnetic induction line direction of the second permanent magnet (5) is vertical with liquid flow direction.
2. a kind of method using device processing heavy metal ions in wastewater described in claim 1, characterized in that including following
Step:
(1) circulation valve (6) are opened, the smelting wastewater with copper is poured into sink (1) and filled it up with sink (1), be then turned on water
Pump (2) and water bath heating device (3), the temperature of water bath heating device (3) is controlled at 25 DEG C -35 DEG C, the magnetic of the first permanent magnet (4)
Field intensity is 3T-3.5T, and the magnetic field strength of the second permanent magnet (5) is 0.5T-1.5T, and the range of the pH value of waste water is 5-7, later
The water speed in pipeline is adjusted to 0.2 m/s -0.5m/s using circulation valve (6)；
(2) waste water starts the cycle over magnetization, magnetizing time t after the completion of debugging1, and t1=V1/ Sv, wherein V1For the body of sink (1)
Product, S are the sectional area of circulation line, and v is water speed；
(3) heavy metal ion after the completion of magnetizing in waste water is thoroughly magnetized, and is removed the second permanent magnet (5) later, is left first
Permanent magnet (4)；
(4) ion exchange resin, and a huge sum of money in the weight for the ion exchange resin being added and waste water is added after in sink (1)
The mass ratio for belonging to ion is 1:1-3:1, starts to adsorb the heavy metal ion in waste water, absorption temperature later using ion exchange resin
Degree is 25 DEG C -35 DEG C, adsorption time are as follows: 20 min -30min；
(5) it after the completion of adsorbing, switches off the pump (2) and circulation valve (6) and stands 10 min -30min, filtering is opened after standing
Valve (9), ion exchange resin, which is filtered, have been stayed in sink (1), and filtered water is flowed out along outlet pipeline；
(6) after the completion of filtering, clear water is added in sink (1) and opens water pump (2) and circulation valve (6) washing pipeline.
3. a kind of method for handling heavy metal ions in wastewater according to claim 2, it is characterized in that: the step (1)
In the first permanent magnet (4) and the second permanent magnet (5) be all made of horizontal distribution and be directly installed on the tube wall of circulation line.
4. a kind of method for handling heavy metal ions in wastewater according to claim 2, it is characterized in that: the step (5)
Ion exchange resin recoverable after the completion of middle absorption.
5. a kind of device for handling heavy metal ions in wastewater according to claim 1, it is characterized in that: the heating water bath
Device (3) is water-bath heater.
6. a kind of device for handling heavy metal ions in wastewater according to claim 1, it is characterized in that: the filter device
It (8) is filter paper, and filter paper is installed at the entrance of Filter valve (9).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110528025A (en) * | 2019-08-19 | 2019-12-03 | 西北矿冶研究院 | Copper electrolysis system and method capable of adjusting copper acid ratio |
| CN111676490A (en) * | 2020-05-22 | 2020-09-18 | 西北矿冶研究院 | Method for optimizing zinc electrodeposition process |
| CN111825260A (en) * | 2020-05-22 | 2020-10-27 | 西北矿冶研究院 | Regulation and control of selective adsorption of Cu from wastewater by carbon nanotubes2+、Pb2+、Zn2+Method (2) |
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