CN106219917B - A kind of device and its minimizing technology of quick removal Heavy Metals in Sludge - Google Patents
A kind of device and its minimizing technology of quick removal Heavy Metals in Sludge Download PDFInfo
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- CN106219917B CN106219917B CN201610715513.XA CN201610715513A CN106219917B CN 106219917 B CN106219917 B CN 106219917B CN 201610715513 A CN201610715513 A CN 201610715513A CN 106219917 B CN106219917 B CN 106219917B
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- heavy metals
- rotary electrode
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46115—Electrolytic cell with membranes or diaphragms
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses the devices and its minimizing technology of a kind of quickly removal Heavy Metals in Sludge, the device includes after application of a voltage to the cathode and anode that form electric field and the tank house formed between cathode and anode, cathode and anode are worked in a manner of rotary electrode, and the gyratory directions of the rotary electrode of anode are that clockwise, the gyratory directions of the rotary electrode of cathode are counterclockwise；The mode of filters pressing mode of the tank house using belt type sludge filter press or one of the rotating disk mode using sewage treatment biological rotating disk technique pressurize so that distance between cathode and anode in 1 mm between 3mm, electrolyte in tank house is the dissolution fluid of sludge, so that the substance that electro-deposition goes out is concentrated in dissolution fluid.
Description
Technical field
The present invention relates to the processing techniques of field of environment protection Heavy Metals in Sludge, in particular to a heavy metal species and cyaniding
Electrolysis/electrodialysis process device of object removal, phosphorus recycling, the device of specifically a kind of quickly removal Heavy Metals in Sludge and
Its minimizing technology.
Background technique
In China there are about electroplate factory 15000, average annual electroplating wastewater discharge amount is up to 4,000,000,000 tons, the total industrial wastewater discharge of Zhan
The 1/6 of amount, but wherein there are about 50% electroplating wastewaters to be not up to national emission standard.Therefore, how to remove or reduce electroplating sludge
Middle content of beary metal has become municipal sludge disposal and recycling and must solve the problems, such as.Meanwhile the annual output of China's municipal sludge
About 60,000,000 tons of amount, the processing handling problems of these sludge also annoying always researcher, a higher huge sum of money in sludge
Belonging to content is wherein crucial limiting factor.
In the prior art, heavy metal in electroplating wastewater administering method specifically includes that chemical method, bioanalysis, physico-chemical process and electricity
Chemical method, plant extraction method etc..Wherein chemical method includes: the precipitation method, oxidizing process, reduction method, neutralisation and gas floatation process;Bioanalysis
Include: bio-flocculation process, biosorption process and biochemical process, for example the oxidation of iron in sludge and sulphur can be made by bacterium
With so that the reduction potential of oxygen in sludge is increased pH value reduces, to make heavy metal dissolve, then using directly or indirectly leaching
Filter method comes out the heavy metal leaching of dissolution, reduces content of beary metal, and bioanalysis generally limited by the existence of bacterium, sulfate
The limitation of the conditions such as acidity of sludge after pollution, processing；Physico-chemical process includes ion-exchange, membrane separation process, absorption method and evaporation
Concentration method；Electrochemical process includes galvanic cell method, electroosmose process, electrocoagulation gas floatation process, electrochemical oxidation process and electrochemical reducing；
Plant extraction method is the absorption of root system excess one or more of pollutant, the especially toxic heavy metals using obligate plant, and will
It is transferred to plant stem-leaf, then gathers in cauline leaf, strange land processing.Plant method is by floristics, economical character, the prevention and control of plant diseases, pest control
Etc. limitation.
Electric repairing technique is a kind of method for effectively removing pollutant, its basic principle is in solid phase/liquid phase systems
Middle insertion electrode, by applying faint direct current electric forming electric field, the various electro kinetic effects generated using DC electric field make dirt
Dye object occurs to migrate and is enriched in cathodic region, thus by pollutant removal.Its, removal effect few, easy to operate with reagent dosage
Rate height, short processing time can remove the advantages that several heavy metal species, porosity low with permeability low dirt big for bulk density simultaneously
Dye object medium also has preferable repairing effect.However, although electric repairing technique can be applied to heavy metal-polluted water
It administers, specific to the removal to heavy metal in electroplating sludge and municipal sludge, which also needs further perfect.
In the application process of electric repairing technique, it is easy to be limited by factors such as electric field action low efficiencys, thus compared with
Hardly possible is realized quickly and effectively to be removed in sludge.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned state of the art, and provides and be applied to electroplating sludge
Middle heavy metal and one kind of cyanide removal, phosphorus recovery processing quickly remove the device and its minimizing technology of Heavy Metals in Sludge.
The device passes through the setting of rotation electrode and microporous membrane, realizes the continuous quick removal of Heavy Metals in Sludge, and this goes
Efficiently, simply except method.
The technical scheme of the invention to solve the technical problem is: a kind of dress of quickly removal Heavy Metals in Sludge
It sets, including the cathode and anode and the tank house formed between cathode and anode after application of a voltage to form electric field,
Cathode and anode are rotary electrode, and the gyratory directions of the rotary electrode of anode are the revolution electricity of cathode clockwise
The gyratory directions of pole are counterclockwise；Tank house is using the filters pressing mode of belt type sludge filter press or using sewage treatment biology
The mode of one of the rotating disk mode of turntable technique pressurize so that distance between cathode and anode in 1 mm between 3mm,
Electrolyte in tank house is the dissolution fluid of sludge, so that the substance that electro-deposition goes out is concentrated in dissolution fluid.
To optimize above-mentioned technical proposal, the measure taken further include:
Spacer is provided between above-mentioned cathode and anode, spacer is anion/cation exchange membrane or miillpore filter, cathode
And anode makes the distance between cathode and anode in 1 mm between 2mm by way of pressurization.
When tank house uses the filters pressing mode of belt type sludge filter press, cathode and anode are multiple combined type knots arranged side by side
Structure.
Above-mentioned cathode and anode is one of carbon plate, the metal plate for being applied with conductive film, corrosion-resistant metal plate
Or a variety of composite construction.
The effect of above-mentioned cathode is the metal electrodeposition made in dissolution fluid；The effect of the anode is to dissolution fluid
Electrolytical acidification processing.
The substance of above-mentioned anode electrolysis acidification is cyanide.
Above-mentioned anode be iron, magnesium, in molybdenum any one or be that its alloy is made, which passes through electrolysis acid
Change handles the concentration that can be realized phosphoric acid.
The present invention also provides a kind of minimizing technologies of the device of quickly removal Heavy Metals in Sludge, and this method includes following
Step:
1): voltage is applied to form rotary electrode to cathode and anode；And rotary electrode and anode shape that cathode is formed
At rotary electrode gyratory directions it is opposite；
2): entering sludge along the occlusion direction of the cathode rotary electrode formed and the rotary electrode revolution of anode formation
Tank house, while the dissolution fluid in sludge is full of tank house as electrolyte；
3): the heavy metal in tank house in sludge is enriched under the action of the electric field that rotary electrode generates to movable cathode；
4): meanwhile, under anion/cation exchange membrane or the microporous membrane effect that sludge is arranged between cathode and anode, sludge
In macromolecular substances be able to and moisture realize be separated by solid-liquid separation；The final recycling for realizing heavy metal and synchronous dehydration.
Compared with prior art, cathode of the invention and anode are rotary electrode, that is to say, that cathode and anode are
The rotation electrode of rotation, and the direction of rotation of the cathode rotation electrode formed and the rotation electrode of anode formation is on the contrary, rotation
Electrode can be such that the heavy metal in sludge is enriched under the action of electric field to movable cathode, to realize Heavy Metals in Sludge removal
Purpose, while the present invention has a spacer in cathode and anode design, and it is solid that spacer can be such that moisture and sludge in sludge realizes
Liquid two-phase laminated flow, therefore sludge dewatering can be completed while recycling Heavy Metals in Sludge.
Detailed description of the invention
Fig. 1 is the working principle of the invention schematic diagram.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 is the schematic illustration of the embodiment of the present invention.
Appended drawing reference therein are as follows: 1 be anode, N1 indicate anode gyratory directions, 2 be cathode, N2 indicate cathode return
Turn direction, 3 be spacer, W indicates that approach axis, the W1 of the sludge containing electroplating wastewater indicate the direction of dewatered sludge discharge, S
Indicate the water deviate from from sludge.
Fig. 1 is the working principle of the invention schematic diagram, as shown, one kind of the invention quickly removes Heavy Metals in Sludge
Device, including after application of a voltage to form the cathode 2 of electric field and anode 1 and be formed between cathode 2 and anode 1
Tank house, cathode 2 and anode 1 are that rotary electrode namely cathode 2 and anode 1 apply after voltage in a manner of rotary electrode
Work, and the gyratory directions N1 of the rotary electrode of anode 1 is the revolution of the rotary electrode of the cathode 2 clockwise
Direction N2 is counterclockwise；Tank house is using the filters pressing mode of belt type sludge filter press or using sewage treatment biological rotating disk work
The mode of one of the rotating disk mode of skill pressurize so that distance between cathode 2 and anode 1 in 1 mm between 3mm, electrolysis
Electrolyte in room is the dissolution fluid of sludge, so that the substance that electro-deposition goes out is concentrated in dissolution fluid.
Spacer 3 is provided between above-mentioned cathode 2 and anode 1, spacer 3 can make moisture and sludge in aqueous sludge
It more effectively separates, spacer 3 is anion/cation exchange membrane or microporous membrane, and cathode and anode are made by way of pressurization
Distance between cathode 2 and anode 1 is in 1 mm between 2mm.
When tank house uses the filters pressing mode of belt type sludge filter press, cathode 2 and anode 1 are multiple combined types arranged side by side
Structure.
Cathode 2 of the invention is one of carbon plate, the metal plate for being applied with conductive film, corrosion-resistant metal plate or a variety of
Composite construction.Same anode 1 is also one of carbon plate, the metal plate for being applied with conductive film, corrosion-resistant metal plate or more
The composite construction of kind.Cathode 2 and anode 1 can all be that carbon plate makes, can also all be applied with conductive film metal plate or
The production of corrosion-resistant metal plate, also can be the composite construction of these types of material certainly.
The effect of cathode 2 of the present invention is the metal electrodeposition made in dissolution fluid；The effect of anode 1 is the electrolysis to dissolution fluid
Acidification.
The substance of anode electrolysis acidification is cyanide.
Anode 1 be iron, magnesium, in molybdenum any one or be that its alloy is made, which passes through at electrolytical acidification
Reason can be realized the concentration of phosphoric acid.
The present invention provides a kind of minimizing technologies of the device of quickly removal Heavy Metals in Sludge, and this method includes following step
It is rapid:
1): voltage is applied to rotary electrode cathode 2 and anode 1；And rotary electrode and anode 1 formation that cathode 2 is formed
Rotary electrode gyratory directions it is opposite；As shown in the figure, N1 indicates gyratory directions, the N2 table for the rotary electrode that anode 1 is formed
Show the gyratory directions for the rotary electrode that cathode 2 is formed；
2): entering sludge along the occlusion direction of the rotary electrode formed of cathode 2 and the rotary electrode revolution of the formation of anode 1
Dissolution fluid to tank house, while in sludge is full of tank house as electrolyte；
3): the heavy metal in tank house in sludge is enriched under the action of the electric field that rotary electrode generates to cathode 2 is mobile；
4): meanwhile, it is dirty under anion/cation exchange membrane or the microporous membrane effect that sludge is arranged between cathode 2 and anode 1
Macromolecular substances in mud are able to realize with moisture and be separated by solid-liquid separation；The final recycling for realizing heavy metal and synchronous dehydration.Water is taken off
Sludge and water be dehydrated point at the revolution separation of rotary electrode cathode and anode and quickly remove Heavy Metals in Sludge.
The above are the preferred embodiments of the invention and design drawings, although the present invention is by reference to preferred embodiment
It is shown and described, still, the ordinary technical personnel of this specialty should understand that, within the scope of the claims, shape can be made
Various variation in formula and details.
Claims (7)
1. a kind of device of quickly removal Heavy Metals in Sludge, including the cathode and anode after application of a voltage to form electric field
And the tank house formed between cathode and anode, it is characterized in that: with revolution after the cathode and anode application voltage
The mode of electrode works, and the gyratory directions of the rotary electrode of anode are the rotary electrode of the cathode clockwise
Gyratory directions be counterclockwise；Spacer is provided between the cathode and anode, the spacer is anion/cation
Exchange membrane or microporous membrane；The tank house is turned using the filters pressing mode of belt type sludge filter press or using sewage treatment biology
The mode of one of the rotating disk mode of disk technique pressurize so that distance between cathode and anode in 1 mm between 2mm, institute
The electrolyte in tank house stated is the dissolution fluid of sludge, so that the substance that electro-deposition goes out is concentrated in dissolution fluid.
2. the device of a kind of quickly removal Heavy Metals in Sludge according to claim 1, it is characterized in that: when tank house uses
When the filters pressing mode of belt type sludge filter press, the cathode and anode are composite structure arranged side by side.
3. a kind of device of quickly removal Heavy Metals in Sludge according to claim 1, it is characterized in that: the cathode and
Anode is one of carbon plate, the metal plate for being applied with conductive film, corrosion-resistant metal plate or a variety of composite constructions.
4. a kind of device of quickly removal Heavy Metals in Sludge according to claim 1, it is characterized in that: the cathode
Effect is the metal electrodeposition made in dissolution fluid；The effect of the anode is to handle the electrolytical acidification of dissolution fluid.
5. the device of a kind of quickly removal Heavy Metals in Sludge according to claim 4, it is characterized in that: the anode electricity
The substance for solving acidification is cyanide.
6. the device of a kind of quickly removal Heavy Metals in Sludge according to claim 1, it is characterized in that: the anode is
Iron, magnesium, in molybdenum any one or be made for its alloy, which can be realized phosphoric acid by electrolytical acidification processing
Concentration.
7. a kind of application method of the device of quick removal Heavy Metals in Sludge described in claim 1, it is characterized in that: this method
The following steps are included:
1): cathode and anode to rotary electrode pair apply voltage；And what the rotary electrode and anode that cathode is formed were formed returns
The gyratory directions for turning electrode are opposite；
2): sludge being made to enter electrolysis along the occlusion direction of the cathode rotary electrode formed and the rotary electrode revolution of anode formation
Room, while the dissolution fluid in sludge is full of tank house as electrolyte；
3): the heavy metal in tank house in sludge is enriched under the action of the electric field that rotary electrode generates to movable cathode；
4): meanwhile, under anion/cation exchange membrane or the microporous membrane effect that sludge is arranged between cathode and anode, in sludge
Macromolecular substances are able to realize with moisture and be separated by solid-liquid separation；The final recycling for realizing heavy metal and synchronous dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610715513.XA CN106219917B (en) | 2016-08-25 | 2016-08-25 | A kind of device and its minimizing technology of quick removal Heavy Metals in Sludge |
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| CN201610715513.XA CN106219917B (en) | 2016-08-25 | 2016-08-25 | A kind of device and its minimizing technology of quick removal Heavy Metals in Sludge |
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| CN106219917A CN106219917A (en) | 2016-12-14 |
| CN106219917B true CN106219917B (en) | 2019-03-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892031B (en) * | 2019-05-06 | 2022-03-01 | 南方科技大学 | Method and device for recovering and purifying phosphorus from sludge incineration ash |
| CN110482809B (en) * | 2019-08-20 | 2021-12-24 | 昆明理工大学 | Method and device for electrochemically enhancing sludge concentration and synchronously removing heavy metals |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153201A (en) * | 2011-05-12 | 2011-08-17 | 武汉金伟利环保工程有限公司 | Electromagnetism sewage-treatment system and electromagnetism sewage-treatment method |
| CN104671632A (en) * | 2015-03-10 | 2015-06-03 | 南京赛佳环保实业有限公司 | Sequencing batch sludge deep dewatering equipment and method adopting electroosmosis |
| CN204434436U (en) * | 2015-01-22 | 2015-07-01 | 深圳市辰中科技有限公司 | A kind of extensive mud oxidation dehydration fertilizer producing equipment |
-
2016
- 2016-08-25 CN CN201610715513.XA patent/CN106219917B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153201A (en) * | 2011-05-12 | 2011-08-17 | 武汉金伟利环保工程有限公司 | Electromagnetism sewage-treatment system and electromagnetism sewage-treatment method |
| CN204434436U (en) * | 2015-01-22 | 2015-07-01 | 深圳市辰中科技有限公司 | A kind of extensive mud oxidation dehydration fertilizer producing equipment |
| CN104671632A (en) * | 2015-03-10 | 2015-06-03 | 南京赛佳环保实业有限公司 | Sequencing batch sludge deep dewatering equipment and method adopting electroosmosis |
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| CN106219917A (en) | 2016-12-14 |
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