CN1408648A - Method and apparatus for preparing flocculant - Google Patents
Method and apparatus for preparing flocculant Download PDFInfo
- Publication number
- CN1408648A CN1408648A CN 02138937 CN02138937A CN1408648A CN 1408648 A CN1408648 A CN 1408648A CN 02138937 CN02138937 CN 02138937 CN 02138937 A CN02138937 A CN 02138937A CN 1408648 A CN1408648 A CN 1408648A
- Authority
- CN
- China
- Prior art keywords
- electrolyte
- aluminum
- pulse
- anode
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Flocculant is prepared through electrolytic process. Inside one electrolyser filled with electrolyte, anodes and cathodes are arranged alternately, and under the magnetic induction strength of 0-0.8T, large alternate pulse current is made to flow between the electrodes to prepare flocculant. The electric pulse has frequency regulated in 0-100 Hz and voltage of 0-100 adjustable. The apparatus includes electrolyser, electrode plate, electrolyte circulating pump, electrolyte and characterized permanent magnet or electromagnetic winding around the electrolyser and alternate power source connected to the anode and cathode. The present invention has no polarization and deactivation and thus has high electrolysis efficiency.
Description
Technical Field
The invention relates to a method and equipment for preparing a water treatment flocculant.
Background
In water treatment, flocculants are commonly used to remove suspended and dispersed colloidal impurities from water. The flocculant is prepared by an electrolysis method, which takes constant direct current, low voltage and large current as an electrolysis power supply and uses a stirrer to form strong mechanical stirring to increase mass transfer solution so as to reduce concentration polarization, but polarization and passivation phenomena of an electrolysis electrode exist.
The most widely used typical inorganic polymeric flocculant is polyaluminum chloride. The polyaluminium chloride is a typical inorganic polymeric flocculant, the flocculation performance of the polyaluminium chloride is 2-3 times of that of a common flocculant with the same dosage, and although the polyaluminium chloride is slightly poor in flocculation performance compared with polyacrylamide, the price and residual toxicity of the polyaluminium chloride are far lower than those of the polyacrylamide. Therefore, it is still an excellent flocculant with strong flocculation ability, fast flocculation speed, low price and low residual quantity in the treated water, and is widely used at present.
The electrolytic process (Chinese patent publication No. CN1177653A) is that hydroxyl ions generated by trivalent aluminum ions under electrochemical conditions controllably are utilized to effectively generate polymerization reaction in a special reactor to prepare high-efficiency polyaluminium chloride. The method uses an iron plate as a cathode, an aluminum plate as an anode, a constant direct current low-voltage large current as an electrolysis power supply, and a stirrer to form strong mechanical stirring to increase a mass transfer solution, thereby reducing concentration polarization. Anode passivation was overcome by increasing the chloride ion content of the solution. The electrode reaction principle is as follows:
and (3) anode reaction:
and (3) cathode reaction:
the total reaction is as follows:
the method is an advanced electrolysis method for preparing high-purity high-efficiency polyaluminium chloride, but has the defects that the process control condition is strict and difficult to control, the required electrochemical reaction time is long, and the adopted strong mechanical stirring mode can reduce the concentration polarization of an electrode and increase the content of chloride ions in a solution to overcome the anode passivation mode, so that the polarization and passivation phenomena of an electrolysis electrode can not be completely overcome.
Disclosure of Invention
The invention aims to provide a method and equipment for preparing a flocculating agent, which thoroughly overcome the defects that the polarization and passivation phenomena of an electrode are difficult to thoroughly eliminate and the required electrochemical reaction time is long in the preparation of the current electrolytic method, and cooperate and strengthen the electrolytic action by various effects, so that the method for preparing the high-efficiency polyaluminium chloride by the electrolytic method is easier to realize in industrial production and has lower cost.
In order to achieve the purpose, the technical scheme of the invention is as follows: a method for preparing flocculating agent adopts an electrolysis method, wherein electrolyte is positioned in an electrolytic cell, and anodes and cathodes are alternately arranged in the electrolytic cell, and the method is characterized in that under the condition that the magnetic induction intensity is 0-0.8T, low-voltage alternating pulse large current is applied to an electrolytic electrode by electric pulse frequency to prepare the flocculating agent.
The frequency of the electric pulse is continuously adjustable within 0-100 Hz, the pulse duty cycle is continuously adjustable within 0-1 second, the waveform of the output pulse is square wave, and the voltage is continuously adjustable within 0-100V.
The electrolyte is aluminum trichloride, the anode and the cathode in the electrolytic cell are aluminum plates, and under the magnetic induction intensity, low-voltage alternating pulse large current is conducted to the electrolytic electrode by electric pulse frequency to prepare the polyaluminum chloride, wherein the alkalization degree of the aqueous solution of the polyaluminum chloride is 55-85%, and the concentration of the polyaluminum chloride is 0.1-0.2 mol/l.
The electrolyte 5 is FeCl3The aqueous solution, anode and cathode are iron plates, and under the magnetic induction intensity, the electrolytic electrode is electrified with high current of low-voltage alternating pulse at the frequency of electric pulse to prepare the poly ferric chloride.
The equipment for preparing the flocculating agent by the method comprises an electrolytic tank 1, a polar plate 2, an electrolyte circulating pump 3 and an electrolyte 5, wherein the electrolyte 5 is positioned in the electrolytic tank 1, and an anode and a cathode are alternately arranged in the electrolytic tank 1, and the equipment is characterized in that a permanent magnet or an electromagnetic coil 4 is arranged around the electrolytic tank 1, and the anode and the cathode are connected with a pulse alternating power supply.
The electrolyte circulating pump 3 can be disposed in the liquid storage tank of the electrolysis apparatus by using a corrosion-resistant submersible pump, or disposed outside the liquid storage tank of the electrolysis apparatus by using a corrosion-resistant centrifugal pump.
The permanent magnet or the electromagnetic coil 4 forms a horizontal magnetic field, or a hollow solenoid can be sleeved on the section of an electrolytic unit to form a vertical magnetic field, the permanent magnet blocks are increased or decreased or the arrangement of the permanent magnet blocks is changed, or the current magnitude, the alternating frequency and the like of the electromagnetic coil are changed, so that the magnetic field intensity can be adjusted, and a uniform or non-uniform magnetic field, a static magnetic field or an alternating magnetic field can be formed.
The anode and the cathode are connected in parallel by a plurality of pairs of anode and cathode electrodes, and the electrode spacing is 1-10 mm ultra-small spacing.
The electrolyte 5 is AlCl3The water solution, the anode and the cathode are aluminum plates and can also be aluminum strips or aluminum wires.
The electrolyte 5 is FeCl3The aqueous solution, anode and cathode were iron plates.
The invention greatly promotes the mass transfer motion of charged ions in the solution by adding the magnetic field force with proper magnetic induction strength, so that the polarization and passivation phenomena of the electrode are effectively controlled. The invention adopts the pulse alternating power supply to cause the continuous reversal of the electrolytic electrode, thereby leading the passive film on the electrode to be dissolved as soon as forming, thoroughly overcoming the passivation phenomenon of the electrode and greatly improving the electrolytic efficiency.
In an electrochemical reactor with an additional magnetic field, an aluminum plate, an aluminum strip or an aluminum wire is respectively used as an electric anode and an electric cathode, aluminum trichloride is used as electrolyte, and a pulse alternating power supply is used for applying low-voltage alternating pulse large current with certain electric pulse frequency to an electrolysis electrode under the synergistic action of the additional magnetic field with certain magnetic induction intensity within a certain time to form an alternating electrochemical field, so that the process of preparing a high-purity and high-efficiency polyaluminium chloride solution by high-efficiency electrolysis is realized. Due to the addition of a certain structure or form of magnetic field force with proper magnetic induction intensity, the mass transfer motion of charged ions in the solution is greatly promoted, so that the polarization and passivation phenomena of the electrode are effectively controlled, and the limiting current density under the same voltage condition in an electrochemical field is increased by one to two times; and because of the application of high current of low-voltage alternating pulse, the negative and positive electrodes are continuously periodically commutated at a certain frequency, so that the concentration polarization of the electrodes is inhibited, and a passivation film generated on the electrodes is continuously dissolved, thereby thoroughly overcoming the polarization and passivation phenomena of the electrodes and greatly improving the electrolysis efficiency.
The electrochemical principle of the invention is as follows: firstly, dissolving the aluminum electrode and generating poly aluminum reaction:
and (3) anode reaction:
and (3) cathode reaction:
the total chemical reaction is: secondly, forming a passivation film when aluminum is used as an anode and dissolving the passivation film by reverse polarity current (passivation and activation of an aluminum electrode):
from the principle of the main electrochemical reaction of the present invention, it can be seen that: due to Al formation on the aluminum anode2O3The passivation film needs a certain amount of electricity, so that the passivation film is dissolved rapidly when the electrode is in the reverse polarity (the cathode current is introduced). The invention adopts the pulse alternating power supply to cause the continuous reversal of the electrolytic electrode, thereby leading the passive film on the electrode to be dissolved as soon as forming, and thoroughly overcoming the passivation phenomenon of the electrode.
The invention has the characteristics that:
1. the electrochemical reactor is added with a magnetic field, so that various cations and anions in the solution generate strong rotary motion vertical to the direction of the magnetic field in the process of running to or separating from the positive and negative electrodes due to the synergistic effect of the magnetic field and the alternating electrochemical field, the rotary motion greatly increases the conductivity of the solution, effectively weakens the polarization phenomenon of the electrodes, and the macroscopic result is that: compared with the electrolysis process under the same voltage and other conditions without applying magnetic field, the limit current density is increased, thereby improving the electrolysis efficiency. The increase in the limiting current density is not only proportional to the magnetic field strength, but also, under certain conditions, to the degree of inhomogeneity of the magnetic field and to the frequency at which the direction of the magnetic field alternates.
2. The electrolytic mode of continuous periodic exchange between the positive electrode and the negative electrode caused by the alternating pulse power supply with low voltage and low pulse frequency thoroughly overcomes the passivation phenomenon of the electrodes. When the working parameters of the power supply are set within the optimal electrolysis working condition range, the electrolytic preparation of the polyaluminium chloride enters an efficient stage.
3. The equipment of the invention has the following maximum structural characteristics:
(1) for industrial production type complete machines, the additional magnetic field mode adopts a magnetic field-electrode pair unitization multi-group combination mode. The unitized multi-group combination mode enables the structure and the form of the additional magnetic field to be flexibly selected, so that the permanent magnet type and the electromagnetic type are easy to realize, and the larger magnetic induction intensity, the magnetic field gradient and the proper alternating frequency are easy to cause. In general, the additional magnetic field can play a significant role after the magnetic field strength is more than or equal to 0.02T.
(2) And the electrode distance adopts an ultra-small distance of 1-10 mm, and simultaneously, the short circuit of the cathode and anode contact sheets can notbe caused in the electrode consumption process. Due to the adoption of the ultra-small distance, the directional migration path of ions is shortened, the pumped and forced circulating electrolyte can generate high-speed flow between the ions, and the mass transfer rate in the electrolytic process is further improved. Is beneficial to the high-efficiency and energy-saving electrolysis process.
4. The method controls the highest efficiency of electrochemically synthesizing the polyaluminium chloride by controlling the proper voltage, current, pulse frequency and proper additional magnetic field intensity of the pulse power supply under normal pressure, and has high single machine automation degree, so that the preparation process flow is simple and easy to control, and the obtained product has stable quality.
5. The method has the advantages of high electromechanical integration degree of equipment, compact equipment, extremely small occupied area and easy movement, and can be directly used for on-site production and addition, thereby saving the storage, dissolution and transportation processes of water treatment agents and saving mass production cost.
6. The polyaluminium chloride prepared by the method has no impurities, the quality is easy to control, and the defect that the existing chemical preparation method is difficult to obtain stable products is effectively overcome.
7. The alkalization degree of the polyaluminium chloride product obtained by the method is obviously higher than that of the product sold in the market, and the flocculation effect is obviously improved compared with that of the product sold in the market. The alkalization degree of the polyaluminium chloride aqueous solution is 55-85%, and the concentration of the polyaluminium chloride is 0.1-0.2 mol/l.
8. The arrangement of the electrolysis electrodes of the method considers the possibility of using more regular leftover materials discarded in the processing of common aluminum products, so a set of green and environment-friendly production process can be formed.
9. The invention can produce various composite polymeric flocculants in one device. As the invention uses a special alternating pulse power supply, the polarity of each electrode can be periodically changed, and the electrode can be used as an anode electrode for ion elution. Therefore, if half of the electrodes are aluminum electrodes and half of the electrodes are iron electrodes, polyaluminum ferric chloride can be produced in the case that the electrolyte is aluminum trichloride (or ferric chloride); in the case that the electrolyte is aluminum sulfate (or ferric sulfate), polymeric aluminum ferric sulfate can be produced; and in the case that the electrolyte is aluminum (iron) trichloride and aluminum (iron) sulfate, the poly aluminum ferric sulfate chloride can be produced.
Drawings
FIG. 1 is a schematic diagram of a magnetic field-electrochemical field electrolysis unit structure of the invention
FIG. 2 is a sectional view taken along line B-B of FIG. 1
Wherein: 1-electrolytic bath, 2-polar plate, 3-electrolyte circulating pump, 4-permanent magnet or electromagnetic coil, and 5-electrolyte.
Detailed Description
As shown in figures 1 and 2, a method for preparing a flocculating agent adopts an electrolysis method, an electrolyte is positioned in an electrolytic cell, and an anode and a cathode are alternately arranged in the electrolytic cell, and is characterized in that a low-voltage alternating pulse large current is applied to anelectrolytic electrode at an electric pulse frequency under the condition that the magnetic induction intensity is 0-0.8T to prepare the flocculating agent.
The frequency of the electric pulse is continuously adjustable within 0-100 Hz, the pulse duty cycle is continuously adjustable within 0-1 second, the waveform of the output pulse is square wave, and the voltage is continuously adjustable within 0-100V.
The electrolyte is aluminum trichloride, the anode and the cathode in the electrolytic cell are aluminum plates, and under the magnetic induction intensity, low-voltage alternating pulse large current is conducted to the electrolytic electrode by electric pulse frequency to prepare the polyaluminum chloride, wherein the alkalization degree of the aqueous solution of the polyaluminum chloride is 55-85%, and the concentration of the polyaluminum chloride is 0.1-0.2 mol/l.
The electrolyte 5 is FeCl3The aqueous solution, anode and cathode are iron plates, and under the magnetic induction intensity, the electrolytic electrode is electrified with high current of low-voltage alternating pulse at the frequency of electric pulse to prepare the poly ferric chloride.
The equipment for preparing the flocculating agent by the method comprises an electrolytic tank 1, a polar plate 2, an electrolyte circulating pump 3 and an electrolyte 5, wherein the electrolyte 5 is positioned in the electrolytic tank 1, and an anode and a cathode are alternately arranged in the electrolytic tank 1, and the equipment is characterized in that a permanent magnet or an electromagnetic coil 4 is arranged around the electrolytic tank 1, and the anode and the cathode are connected with a pulse alternating power supply.
The electrolyte circulating pump 3 can be disposed in the liquid storage tank of the electrolysis apparatus by usinga corrosion-resistant submersible pump, or disposed outside the liquid storage tank of the electrolysis apparatus by using a corrosion-resistant centrifugal pump.
The permanent magnet or the electromagnetic coil 4 forms a horizontal magnetic field, or a hollow solenoid can be sleeved on the section of an electrolytic unit to form a vertical magnetic field, the permanent magnet blocks are increased or decreased or the arrangement of the permanent magnet blocks is changed, or the current magnitude, the alternating frequency and the like of the electromagnetic coil are changed, so that the magnetic field intensity can be adjusted, and a uniform or non-uniform magnetic field, a static magnetic field or an alternating magnetic field can be formed.
The anode and the cathode are connected in parallel by a plurality of pairs of anode and cathode electrodes, and the electrode spacing is 1-10 mm ultra-small spacing.
The electrolyte 5 is AlCl3The water solution, the anode and the cathode are aluminum plates and can also be aluminum strips or aluminum wires.
The electrolyte 5 is FeCl3The aqueous solution, anode and cathode were iron plates.
The specific method of the invention is as follows:
adding an aluminum trichloride solution with a certain concentration into an electrolytic cell attached with a magnetic field with a certain specific structure or form, controlling the electrode distance to be 1-10 mm, adopting a multi-pair positive and negative electrode pair parallel connection mode for electrode connection, and adopting a powerful pump for electrolyteForced high-speed circulation, the temperature of the electrolyte is controlled below 60 ℃, the pH value is controlled to be slightly acidic (pH is 4-6), single aluminum materials (plates, strips, wires and the like) are respectively used as an anode and a cathode, the bath voltage (instantaneous pulse voltage maximum) is 2-9V, and the current density (instantaneous pulse current maximum) is 3-10A/dm2The frequency of the alternating electric pulse is 0.5-15 Hz, the electrolysis time is 1-1.5 hours, and the strength of the magnetic induction of the additional magnetic field is adjusted between 0.02-0.2T, so that the polyaluminum chloride solution with the alkalization degree of 55-85% can be prepared.
Example 1
As shown in FIGS. 1 and 2, a magnetic field-added organic glass electrolytic cell (volume 60X 20X 150 mm) having a tank volume of 1000ml is used3) 0.1mol/l AlCl is added3500ml of an aqueous solution was electrolyzed under the following conditions:
Cathode aluminum plate (scrap of aluminum processing) 15X 150X 15mm 3 pieces
Electrode spacing: 8mm
An electrolysis power supply: alternating pulse power supply
Circuit connection: in parallel
Frequency of alternating pulse current: 1HZ
Pulse duty cycle: 0 second
Instantaneous maximum value of pulse voltage: about 9V
Instantaneous maximum value of pulse current: 5A
Additional magnetic field: horizontal inhomogeneous magnetic field
Strength of induction at the maximum intensity of the additional magnetic field: 0.1T
Temperature change of the electrolyte: 20-60 DEG C
And (3) electrolysis time: 90 minutes
After the electrolysis is finished, standingthe prepared aqueous solution for 24 hours and then detecting, wherein the indexes are as follows: the alkalization degree is 68 percent
Example 2
As shown in FIGS. 1 and 2, a magnetic field-added organic glass electrolytic cell (volume 60X 20X 150 mm) having a tank volume of 1000ml is used3) 0.1mol/l AlCl is added3An aqueous solution.
Cathode aluminum plate (scrap of aluminum processing) 15X 150X 15mm 3 pieces
Electrode spacing: 8mm
An electrolysis power supply: alternating pulse power supply
Circuit connection: in parallel
Frequency of alternating pulse current: 3Hz
Pulse duty cycle: 0 second
Instantaneous maximum value of pulse voltage: about 6V
Instantaneous maximum value of pulse current: 6A
Additional magnetic field:
vertical pulsating magnetic field pulsation frequency: 25Hz
Instantaneous maximum magnetic induction intensity: 0.2T
And (3) electrolysis time: 90 minutes
Temperature change of the electrolyte: 20-60 DEG C
After the electrolysis is finished, standing the prepared aqueous solution for 24 hours and then detecting, wherein the indexes are as follows: the alkalization degree is 84.6 percent
Example 3
As shown in FIGS. 1 and 2, a magnetic field-added organic glass electrolytic cell (volume 60X 20X 150 mm) having a tank volume of 1000ml is used3) Adding FeCl of 0.1mol/l3An aqueous solution.
Cathode iron plate (scrap iron processing) 15X 150X 15mm 3 pieces
Electrode spacing: 8mm
An electrolysis power supply: alternating pulse power supply
Circuit connection: in parallel
Frequency of alternating pulse current: 3Hz
Pulse duty cycle: 0 second
Instantaneous maximum value of pulse voltage: about 6V
Instantaneous maximum value of pulse current: 6A
Additional magnetic field:
vertical pulsating magnetic field pulsation frequency: 25Hz
Instantaneous maximum magnetic induction intensity: 0.2T
And (3) electrolysis time: 90 minutes
Temperature change of the electrolyte: 20-60 DEG C
After the electrolysis is finished, standing the prepared aqueous solution for 24 hours and then detecting, wherein the indexes are as follows: the alkalization degree is 80.2 percent
To verify the flocculation performance of the product of the invention and to facilitate a transverse comparison with other patented methods of preparation, and to take into account the fact that an acceptable polyaluminum chloride flocculant is superior to a conventional flocculant in use. So that only the "Dayu polymeric aluminium" (Al) produced by Tangshan-Dongchang company of China is adopted2O317.6% alkalization degree 50%) and the aluminum chloride prepared by the invention are subjected to performance comparison experiments, so that the problems can be explained.
The experimental conditions were as follows:
subject: residual activated sludge after concentration in sewage plant
Activated sludge suspended solid concentration: 10000mg/l
PH＝6.9
The experimental method and the steps are as follows:
the flocculation effects of different flocculants are compared by adopting the degree of improving the dehydration and filtration performance of the activated sludge by adding the flocculants. And sludge dewatering performance was measured by determining its capillary water absorption time (CST). Under the condition of the same concentration of aluminum ions, the smaller the capillary water absorption time of the activated sludge before and after the addition of the flocculant is, the better the flocculation property of the flocculant is. A commercially available KL-1 model CST tester was used as a measuring instrument.
The experimental steps are as follows:
respectively preparing the "Dayu polymeric aluminum" and the polymeric aluminum prepared by the invention into 10-5M (with Al)3+Meter) concentration of flocculant solution for flocculation effect comparison. The method comprises the following specific steps of putting 0.2ml of flocculant into 50ml of activated sludge with the sludge concentration of 10000mg/l, stirring for 1 minute on a magnetic stirrer at the speed of 250 revolutions per minute, measuring the CST value of the activated sludge, and taking the average value of CST of 6 times after the highest value and the lowest value are removed in 8 parallel tests as final data, wherein the test results are as follows:
| kind of flocculating agent | Dayu polymeric aluminium | The polymeric aluminum prepared by the invention |
| Activated sludge concentration (mg/l) | 10000 | 10000 |
| Activated sludge volume ml | 50 | 50 |
| Raw sludge CST (second) | 145 | 145 |
| Flocculant concentration (in Al)3+Meter) (M) | 10-5 | 10-5 |
| Flocculant addition amount (ml) | 0.2 | 0.2 |
| Sludge CST after adding flocculant (second) | 50.8 | 45.6 |
| Magnitude of decrease in CST (%) | 64.97 | 68.55 |
The results show that the flocculation performance of the polymeric aluminum product produced by the invention is superior to that of the commercial high-quality polymeric aluminum product. The equipment is small and exquisite, the electromechanical integration degree is high, and the polarization passivation phenomenon of an electrolytic electrode is completely overcome, so that one equipment can form an efficient process flow for preparing high-purity and high-efficiency polyaluminium chloride, and the high-purity and high-efficiency polyaluminium chloride is prepared and added in real time on site, so that a large amount of medicament preparation, storage, transportation, capital construction and operation management cost can be saved, and the high-purity and high-efficiency polyaluminium chloride has industrial practical value.
Claims (10)
1. A method for preparing flocculating agent adopts an electrolysis method, wherein electrolyte is positioned in an electrolytic cell, and anodes and cathodes are alternately arranged in the electrolytic cell, and the method is characterized in that under the condition that the magnetic induction intensity is 0-0.8T, low-voltage alternating pulse large current is applied to an electrolytic electrode by electric pulse frequency to prepare the flocculating agent.
2. The method for preparing flocculant according to claim 1, wherein the frequency of the electric pulse is continuously adjustable from 0 to 100Hz, the pulse duty time is continuously adjustable from 0 to 1 second, the waveform of the output pulse is square wave, and the voltage is continuously adjustable from 0 to 100V.
3. The method for preparing the flocculant according to claim 1, wherein the electrolyte is aluminum trichloride, the anode and the cathode in the electrolytic cell are aluminum plates, and the aluminum polychloride is prepared by applying a high alternating pulse current at a low voltage to the electrolytic electrode at an electric pulse frequency under the magnetic induction intensity, wherein the alkalization degree of the aluminum polychloride aqueous solution is 55-85%, and the concentration of the aluminum polychloride is 0.1-0.2 mol/l.
4. The method of claim 1, wherein the electrolyte is FeCl3The aqueous solution, anode and cathode are iron plates, and under the magnetic induction intensity, the electrolytic electrode is electrified with high current of low-voltage alternating pulse at the frequency of electric pulse to prepare the poly ferric chloride.
5. An apparatus for carrying out the method according to claim 1, comprising an electrolytic cell (1), a pole plate (2), an electrolyte circulation pump (3), and an electrolyte (5), wherein the electrolyte (5) is located in the electrolytic cell (1), and anodes and cathodes are alternately arranged in the electrolytic cell (1), characterized in that permanent magnets or electromagnetic coils (4) are arranged around the electrolytic cell (1), and the anodes and cathodes are connected to a pulse alternating power supply.
6. The apparatus for preparing flocculant according to claim 5, characterized in that the electrolyte circulation pump (3) can be placed in the liquid sump of the electrolyzer by means of a corrosion-resistant submersible pump or can be placed outside the liquid sump of the electrolyzer by means of a corrosion-resistant centrifugal pump.
7. The apparatus for preparing flocculant according to claim 5, characterized in that the permanent magnet or the electromagnetic coil (4) forms a horizontal magnetic field, and a hollow solenoid can also be sleeved on the cross section of an electrolysis unit to form a vertical magnetic field.
8. The apparatus for preparing flocculant according to claim 5, wherein the anode and the cathode are connected in parallel by a plurality of pairs of anode and cathode electrodes, and the electrode spacing is 1-10 mm ultra-small spacing.
9. The apparatus of claim 5, wherein the electrolyte is AlCl3The water solution, the anode and the cathode are aluminum plates, and can also be aluminum strips or aluminum wires.
10. The apparatus for preparing flocculant according to claim 5, wherein the electrolyte is FeCl3The aqueous solution, anode and cathode were iron plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138937 CN1226196C (en) | 2002-08-16 | 2002-08-16 | Method and apparatus for preparing flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02138937 CN1226196C (en) | 2002-08-16 | 2002-08-16 | Method and apparatus for preparing flocculant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1408648A true CN1408648A (en) | 2003-04-09 |
| CN1226196C CN1226196C (en) | 2005-11-09 |
Family
ID=4749804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02138937 Expired - Fee Related CN1226196C (en) | 2002-08-16 | 2002-08-16 | Method and apparatus for preparing flocculant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226196C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010034A (en) * | 2010-12-21 | 2011-04-13 | 北京碧水源膜科技有限公司 | Preparation device of ferron used for water treatment and application method thereof |
| CN102826704A (en) * | 2012-09-20 | 2012-12-19 | 艾特克控股集团有限公司 | Recycle system for recycled water |
| CN106191913A (en) * | 2016-08-29 | 2016-12-07 | 太仓市新星轻工助剂厂 | A kind of preparation method of aluminium polychlorid |
| CN114772624A (en) * | 2022-05-12 | 2022-07-22 | 西安益维普泰环保股份有限公司 | Method for producing high-purity aluminum chloride |
-
2002
- 2002-08-16 CN CN 02138937 patent/CN1226196C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010034A (en) * | 2010-12-21 | 2011-04-13 | 北京碧水源膜科技有限公司 | Preparation device of ferron used for water treatment and application method thereof |
| CN102010034B (en) * | 2010-12-21 | 2012-07-04 | 北京碧水源膜科技有限公司 | Preparation device of ferron used for water treatment and application method thereof |
| CN102826704A (en) * | 2012-09-20 | 2012-12-19 | 艾特克控股集团有限公司 | Recycle system for recycled water |
| CN102826704B (en) * | 2012-09-20 | 2015-04-08 | 江苏艾特克环境工程有限公司 | Recycle system for recycled water |
| CN106191913A (en) * | 2016-08-29 | 2016-12-07 | 太仓市新星轻工助剂厂 | A kind of preparation method of aluminium polychlorid |
| CN114772624A (en) * | 2022-05-12 | 2022-07-22 | 西安益维普泰环保股份有限公司 | Method for producing high-purity aluminum chloride |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226196C (en) | 2005-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207645869U (en) | A kind of pharmaceutical wastewater apparatus for electrochemical treatment | |
| CN102515317A (en) | Method and device for producing acid and ammonia water by using ammonia-nitrogen waste water | |
| CN101781001A (en) | Method for processing effluent by two-stage electrolysis and device thereof | |
| CN115259301A (en) | Electric flocculation device and method for removing fluorine ions in perfluorinated compound degradation wastewater and application of electric flocculation device | |
| CN1252317C (en) | Parahalogen acid generating process and appts. thereof | |
| CN101391846A (en) | Electrochemistry method for treating oilfield produced water into confecting polymer water | |
| CN1408648A (en) | Method and apparatus for preparing flocculant | |
| KR101655240B1 (en) | Apparatus for electrochemical treatment of wastewater using inclined electrode and supersonic | |
| CN106904772A (en) | A kind of three-dimensional electrocatalytic oxidation shale gas fracturing outlet liquid processing unit and method | |
| CN205710008U (en) | A kind of recirculated water device for deep cleaning | |
| CN100393915C (en) | Process for preparing polymeric aluminium chloride through dimensionally stable anodes | |
| CN1186773A (en) | Preparing polymerised aluminum chloride by electrodialysis | |
| CN102180533B (en) | Device for sewage treatment by electrolysis-catalytic oxidation method | |
| CN105505780A (en) | Microalgae collecting method and microalgae | |
| CN104944697A (en) | Microbial electrolysis cell-Fenton combined treatment device and process for treating furniture production wastewater | |
| CN211035350U (en) | Ultrasonic scale prevention electrolytic water treatment equipment | |
| CN210340435U (en) | Cylindric rotatory oscillating electrode electric flocculation electroplating sewage treatment plant | |
| CN207512055U (en) | A kind of sludge treating system | |
| KR101611429B1 (en) | Water treatment system using electrocoagulation method | |
| CN102531111A (en) | Device and method for treating zinc smelting waste water by using parallelly-connected aluminum electrodes with electro-coagulation method | |
| CN217780826U (en) | Sewage electrolytic tank | |
| CN207313324U (en) | A kind of three-dimensional electrocatalytic oxidation shale gas fracturing outlet liquid processing unit | |
| CN207632566U (en) | Electrolyzing sewage processing equipment | |
| CN2775041Y (en) | Treating device for waste water of pickling and salting pickles | |
| CN205974108U (en) | Novel domestic sewage electrolysis dephosphorization device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN KELIN ENVIRONMENT-PROTECTION TECHNOLOGY CO. Free format text: FORMER OWNER: YANG GAOLI Effective date: 20040604 Owner name: WUHAN UNIV. OF SCIENCE AND ENGINEERING Free format text: FORMER OWNER: LUO YATIAN |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20040604 Address after: 430070 Hubei Province, Wuhan city Hongshan District Luoshi Road No. 122 Wuhan University of Technology Department of scientific research achievements of the Patent Office Applicant after: Wuhan University of Technology Co-applicant after: WUHAN KINGLION ENVIRONMENTAL TECHNOLOGY CO., LTD. Address before: 430070 No. 1, unit 305, West Hospital, Wuhan University of Technology, Hongshan District, Hubei, Wuhan, 13 Applicant before: Luo Yatian Co-applicant before: Yang Gaoli |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Gaoli Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |