CN108906851A - A kind of high-moisture low-permeability waste residue removes saline and alkaline dehydration combined governance method - Google Patents
A kind of high-moisture low-permeability waste residue removes saline and alkaline dehydration combined governance method Download PDFInfo
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- CN108906851A CN108906851A CN201810747076.9A CN201810747076A CN108906851A CN 108906851 A CN108906851 A CN 108906851A CN 201810747076 A CN201810747076 A CN 201810747076A CN 108906851 A CN108906851 A CN 108906851A
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- 239000002699 waste material Substances 0.000 title claims abstract description 284
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 68
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000018044 dehydration Effects 0.000 title claims abstract description 44
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 197
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 31
- 230000005684 electric field Effects 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000012546 transfer Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 claims description 84
- 230000005484 gravity Effects 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 16
- 239000002893 slag Substances 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 10
- 238000005266 casting Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 230000003252 repetitive effect Effects 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000004615 ingredient Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002322 conducting polymer Substances 0.000 claims description 4
- 229920001940 conductive polymer Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000013505 freshwater Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000012946 outsourcing Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000002657 fibrous material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 241001282153 Scopelogadus mizolepis Species 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 description 20
- 239000003513 alkali Substances 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000008399 tap water Substances 0.000 description 6
- 235000020679 tap water Nutrition 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 229910001415 sodium ion Inorganic materials 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000010563 solid-state fermentation Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- -1 salt calcium chloride Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
Saline and alkaline dehydration combined governance method is removed the invention discloses a kind of high-moisture low-permeability waste residue, belongs to controlling waste residue field.It is characterized in that：By several not only electrically conductive but also water through tubulose or band electrode at regular intervals, in parallel, horizontal direction arrangement constitute electrode group, the electrode group is alternate with waste residue layer to be stacked；Pass through the liquid of electrode injection proper composition and quantity, direct current is applied to electrode and generates electric field in waste residue, under electric field action, saline and alkaline contained soluble ion is to the electrode transfer electrically opposite with it in waste residue, and taken out of by liquid appropriate through the water-filled pipe of electrode, to realize removing saline and alkaline in waste residue；The moisture in waste residue is discharged to electrode transfer from water-filled pipe simultaneously；It is upper cover waste residue pressure under, the water in waste residue be further squeezed presses to electrode from water-filled pipe be discharged.The present invention can be realized simultaneously big scale of construction waste residue except saline and alkaline and dehydration, and handle time is short, construction area is few.
Description
Technical field
Saline and alkaline dehydration combined governance method is removed the present invention relates to a kind of high-moisture low-permeability waste residue, belongs to Industry Waste
Slag treatment and the field of utilizing.
Background technique
Some industrial processes dump infiltration coefficient lower than 10-4Cm/s, particulate, containing saline and alkaline waste residue mud.Usually this
A little waste residue mud are deposited in the waste residue library of dam body interception.The characteristics of due to the low-permeability of waste residue, high salinity, although through
Long-term deposition, though moisture content is declined, still in stream plastic state, moisture content still may be up to 100 ~ 380%.Such as：Production
The alkaline residue that soda ash process dumps contains the ingredients such as a large amount of chloride ions, sodium ion, hydroxide ion.Grain diameter is less than 25 μm
Particle can account for up to 98%；Rich in salt calcium chloride, sodium chloride and magnesium chloride etc. soluble easily in water.Since chloride salt dissolves
Degree is big, has stronger hygroscopicity, and moisture evaporation is slowly, and is still body of paste after causing alkaline residue to stack for a long time, and water content can
Up to 380%.Red mud, grain diameter are dumped with the production process that alumina extracts aluminium<80 μm, wherein containing fluorine and calcium hydroxide
Deng.Since these waste residue amounts of dumping are very big, up to thousands of ten thousand steres have been stored up by some factories.The stockpiling of these waste residues occupies
Soil, pollution environment.It is intended to this kind of industrial residue harmless treatment or resource utilization, it is necessary to remove harmful ion（Such as chlorine
Ion, hydroxide ion, sodium ion, nitrate ion, fluorine ion etc.）, and it is dewatered to moisture content appropriate.
Currently, for this kind of big scale of construction, hyposmosis coefficient, high-moisture waste residue there is no cost-effective dewatering and
Saline and alkaline removal methods.In addition, to the solid pollutant of the scale of construction big in this way in governance process, it usually needs occupy large area field
Ground expends for quite a long time, and treated that waste residue is also required to occupies the interim stockyard of large area.These conditions are often difficult to
Met.
Summary of the invention
Saline and alkaline dehydration combined governance technology is removed the invention proposes a kind of high-moisture low-permeability saliferous offscum in alkali, it should
Method can the big scale of construction of cost-effective processing this kind of waste residue, realize the minimizing of waste residue and innoxious.Simultaneously governance process and
It is few that occupied ground is stored up after improvement, and short processing time.
When imposing DC electric field to moist waste residue, under electric field action, two kinds of effects are at least generated：1）Soluble salt in waste residue
The ion of alkali can be to the electrode transfer electrically opposite with it, so as to be removed out waste residue；2）Moisture in waste residue, can be in electric field
Under the action of to cathode assemble, so as to be discharged.
Under the continuous effect lower than its bearing capacity, moisture therein can gradually be discharged moist waste residue；The speed of draining
Rate and the length of its drainage path are in negative exponent correlativity.More drainage channel is such as set in waste residue, draining road is shortened
Diameter can increase substantially drainage rates.Under pressure, it is reduced with the void content of the discharge of dampening, waste residue, waste residue carrying
Power steps up.Pressure applied must match with the bearing capacity of waste residue.The excessive structure for leading to waste residue of pressure is destroyed, and is held
Power is carried to decline instead.There is conductive and draining dual function electrode band using aforementioned building DC electric field, in building direct current
Drainage channel is increased while electric field, shortens drainage path.In addition, alternate with waste residue successively using busbar water electrode band
On the one hand the method for accumulation makes waste residue continue to be dehydrated under pressure using the self weight of waste residue, folded with the effect of electric power dehydration
Add, so as to reduce time and the energy consumption of direct current electric dehydration；On the other hand itself bearing capacity for improving waste residue, can be into one
Step covers debris dump weight on increasing, and the increase of heap weight further improves the displacement and bearing capacity of lower waste slag, so follows
Ring is stepped up debris dump height, so as to so that debris dump height is significantly promoted.Solid state fermentation process and stockpiling can so be accounted for
Ground is greatly reduced.
A kind of high-moisture low-permeability waste residue of the invention removes saline and alkaline dehydration combined governance method, including walks as follows
Suddenly：Electrode used therein is not only electrically conductive but also can be with the pipe of water flowing, band electrode.Electrode is horizontal direction arrangement, by one group it is parallel, press
The electrode group that the electrode of certain intervals arrangement is constituted is alternate with certain thickness waste residue layer to be stacked.In the plane perpendicular to electrode
It is interior, the pole of the polarity of any one the connect DC power supply of electrode and at least one the connect DC power supply of electrode in its electrode
Property is opposite.When applying direct current in the electrodes, and injecting the liquid of proper composition and quantity, pass through the positive and negative electrode suitably arranged
Electric field is generated in waste residue.Under electric field action, on the one hand, saline and alkaline contained soluble ion is to electrically opposite with it in waste residue
Electrode transfer, and taken out of by liquid appropriate through the water-filled pipe of electrode, to realize the removing of harmful substance in waste residue；Separately
On the one hand, the moisture in waste residue is discharged to electrode transfer from the water-filled pipe of electrode.It is upper cover waste residue gravity under the action of, give up
Water in slag is pressed further by permeable electrode, from the water-filled pipe of electrode and is discharged.
The electrode has following several configurations：
1, the pipe being made of an electrically conducting material, tube wall have water-permeable aperture, the geometric form of aperture by the interval of design and aperture
Shape is unlimited, and the diameter or short side dimension in hole are 0.1 ~ 50mm, and the ratio that the gross area of aperture accounts for tube wall surface product is 5% ~ 95%；Pipe
Section form it is unlimited；
2, in conductive material wire rod（Rope, bandlet, muscle etc.）Housing water pipe is constituted, and wherein water pipe tube wall is by the interval and aperture designed
With aperture, the geometry of aperture is unlimited, and the diameter or short side dimension in hole are 0.1 ~ 50mm, and the gross area of aperture accounts for tube wall table
The ratio of area is 5% ~ 95%；Electrode sections form is unlimited；
3, outsourcing filtering layer is constituted again on the basis of 1 or 2 configuration（Filtering layer is to prevent waste residue fine grained from entering electrode）；
4, commercially available conductive plastics drain bar（By being constituted along length direction with the conductive material bands outsourcing filtering layer of concave guiding gutter）.
Wherein：
1, conductive material is well known various conductive materials, including but not limited to：Carbon fiber, various corrosion-resistant metal materials, stone
Ink, conducting polymer, it is one or more with the compound electric conductor constituted of polymer by carbon fiber, various metal materials, graphite etc.；
2, water pipe is well known various non-conductive water pipes, including but not limited to：Plastic tube, various non-conductive fibrous materials are woven into
Pipe；It can be the pipe for being able to maintain specific cross-sectional shape, be also possible to the unfixed pipe of cross sectional shape；
3, filtering layer is known permeable flexible material, including but not limited to：Cloth that non-woven fabrics, plant fiber are made into, chemical fibre
The cloth etc. being made into；
The electrode can be also possible to connect the electrode of power cathode all using same electrode（Cathode）Using one kind
Electrode, the electrode for connecting positive pole（Anode）Using another electrode.
The waste residue is permeability lower than 10-4The fluidised form of cm/s flows plastic state, fine grained, containing saline and alkaline waste residue；Intend
The saline and alkaline of removal is soluble.
Specific embodiment
1, it will design and determine that length, interval sum number purpose pipe or band electrode horizontal direction are arranged in parallel, form one layer of electrode
Group.To guarantee the voltage provided on whole branch electrode is substantially uniform, on every electrode appropriate intervals extraction wire, it is connected in parallel
In the same pole of power supply（It is tested and is determined by design according to the physics of waste residue and chemical property condition in extraction wire interval）.It should
It is in charge of respectively with same water inlet and is in charge of and connect with same draining in the same polar each electrode both ends of power supply that connect in electrode group；
2, the waste residue of paving design thickness on it（The waste residue end can use well known method, such as reinforced earth gear or earth bank
Method, carry out supporting and retaining system be unlikely to collapse to maintain the dimensionally stable of the waste residue layer）；
3, one layer of electrode group is arranged in the way of 1 again on the waste residue layer.The electrode of this layer of electrode group and other each layer electrode groups
Electrode be parallel to each other；
4, in this layer of electrode group in the way of 2 the waste residue of paving design thickness again；
5, above-mentioned 1 ~ 4 repetitive operation is pressed, until reaching the waste residue number of plies of design.Advancing the speed for waste residue layer need to be arranged with lower waste slag
Water speed rate and gain in strength rate are coordinated, and are calculated and are determined based on test result by design.With the appropriate pure land in top electrode group
Or waste residue covering, play guard electrode；
6, the arrangement mode of each layer electrode group connection electric power polarity has following four：1）Singular layer electrode group connects the same pole of power supply
Property, and even numbers layer electrode group connects the opposite polarity of power supply（Call the connection of electrode A 1 in the following text）；2）Singular layer electrode group connects the same of power supply
Polarity, and the adjacent electrode in even numbers layer electrode group connects the opposite polarity of power supply respectively（Call the connection of electrode A 2 in the following text）, can also be double
Several layers of electrode group connect the same polarity of power supply, and the adjacent electrode in singular layer electrode group connects the opposite polarity of power supply respectively, with
It is described by taking electrode A 2 as an example down；3）During being dehydrated and removing saline and alkaline, the lower electrode group of every layer of waste residue all connects the same of power supply
One polarity, and the upper electrode group of every layer of waste residue all connects the opposite polarity of power supply（Call electrode B connection in the following text）；4）Each layer of electrode group
Adjacent electrode connect the anode and cathode of power supply respectively, adjacent electrode of each layer electrode group in vertical same plane is also difference
Connect the anode and cathode of power supply（Call electrode C connection in the following text）, the arrangement mode that electrode group connects electric power polarity is different, determines difference
Sequence of construction；
7, when the connection of electrode A 1 or A2 connection, sequence of construction is as follows：
1）After the completion of third layer waste residue paves, first layer electrode group and third layer electrode group are connect to a certain pole of power supply（Call A in the following text
Pole）；Electrode A 1 is connected, second layer electrode group is connect to the opposite pole of power supply（Call the negative pole A in the following text）；Electrode A 2 is connected, by second
Layer electrode group adjacent electrode connects the pole A and the negative pole A of power supply respectively.Simultaneously by the water inlet point of the electrode group of each layer connection pole power supply A
Pipe（It calls in the following text into water and is in charge of A）Be connected to the water inlet manifold A for leading to feed flow source A, by each layer connection the negative pole A of power supply electrode group into
Moisture pipe（It calls in the following text into water and is in charge of negative A）It is connected to the negative A of water inlet manifold for leading to the negative A in feed flow source；The electrode group of the pole power supply A will be connected
Draining be in charge of（It calls draining in the following text and is in charge of A）It is connected to the main sewer A for leading to liquid storage pool A；The electrode group of the negative pole A of power supply will be connected
Draining be in charge of（It calls draining in the following text and is in charge of negative A）It is connected to the negative A of main sewer for leading to the negative A of liquid storage pool.Apply the voltage of design；Together
When intake be in charge of A and the given suitable particular liquid of negative A supply design is in charge of in water inlet respectively.Start first layer and the second layer
The dehydration and the saline and alkaline process of removing of waste residue；
2）Continue the 4th layer of setting and layer 5 waste residue and the 4th layer and layer 5 electrode at the same time；
3）After the completion of layer 5 waste residue paves, layer 5 electrode group is connect to the pole A of power supply, the 4th layer of electrode group is connect into power supply
The negative pole A（Electrode A 1 connects）Or adjacent electrode is connect to the pole A and the negative pole A of power supply respectively（Electrode A 2 connects）.Simultaneously by each layer into
Moisture pipe A is connected to water inlet manifold A, and negative A is in charge of in the water inlet of each layer and is connected to the negative A of water inlet manifold；A is in charge of in draining and is connected to row
Supply mains A；Negative A is in charge of in draining and is connected to the negative A of main sewer.Apply the voltage of design；Simultaneously respectively through water inlet be in charge of A and into
The negative A of moisture pipe supplies suitable particular liquid.Start the dehydration and the saline and alkaline process of removing of third layer and the 4th layer of waste residue；
4）By 2）With 3）Identical step repetitive operation, one group of successive of every two layers of waste residue complete each layer waste residue pave with electrode,
The installation and dehydration and the saline and alkaline work of removing of water pipe；
5）With the discharge of moisture content and salt basic ion in each layer waste residue, make it when the water content in waste residue drops to certain degree
Bearing capacity can satisfy pave subsequent waste residue layer on it after（The index or bearing capacity index of water content decline are through testing by designing
It calculates and determines）And in waste residue after each target ion concentration reaches the final index of design code, can successive close power supply and confession
Water source.Remaining moisture drives discharge by the gravity for covering waste residue thereon in waste residue.Until the water content of two layers of waste residue of highest and each
Target ion concentration reaches design object, can close all power and feed flow source；It is upper cover waste residue gravity under, in waste residue
Moisture continue through the electrode that can be drained and be discharged through drainpipe, it is complete until the moisture content of waste residue reaches the final requirement of design
At the saline and alkaline removing and dehydration construction of whole waste residues；；
8, when electrode B connects, sequence of construction is as follows：
1）After the completion of second layer waste residue paves, first layer electrode group is connect to the pole A of power supply, second layer electrode group is connect into power supply
The negative pole A.A is in charge of in water inlet is connected to water inlet manifold A simultaneously, and the negative A of negative A connection water inlet manifold is in charge of in water inlet；A is in charge of in draining
It is connected to main sewer A；Negative A is in charge of in draining and is connected to the negative A of main sewer.Apply the voltage of design；It is in charge of A through water inlet simultaneously
It is in charge of negative A with water inlet and supplies suitable particular liquid.Start the dehydration and saline and alkaline reset procedure of first layer waste residue；
2）Continue that third layer electrode and third layer waste residue is arranged at the same time；
3）When the water content in first layer waste residue drop to certain degree make its bearing capacity can satisfy pave on it is subsequent
Waste residue layer（The index or bearing capacity index of water content decline are tested to be determined by design）And each target ion concentration reaches in waste residue
To after the final index of design code, the power supply of first layer and second layer electrode can be closed, remaining moisture is by upper in waste residue
The gravity for covering waste residue drives discharge；
4）After the completion of third layer waste residue paves, and meet 3）Condition after, will by the pole A of second layer electrode group reconfiguration power supply
Third layer electrode group connects the negative pole A of power supply.A correspondingly is in charge of in water inlet and is connected to water inlet manifold A, negative A connection is in charge of in water inlet
In the negative A of water inlet manifold；A is in charge of in draining and is connected to main sewer A；Negative A is in charge of in draining and is connected to the negative A of main sewer.Apply
The voltage of design；It is in charge of A through water inlet simultaneously and water inlet is in charge of negative A and supplies suitable particular liquid.Start the de- of second layer waste residue
Water and the saline and alkaline process of removing；
5）By 2）,3）With 4）Identical step and method repetitive operation, completes the peace that each layer waste residue paves with electrode, water pipe thereon
Fill step and saline and alkaline removing and dewatering work.Until the water content of top waste residue and each target ion concentration reach design mesh
Mark, can close all power and feed flow source；It is upper cover waste residue gravity under, the water in waste residue continues through the electricity that can be drained
Pole is discharged through drainpipe, until the water content of waste residue reaches, design is final to be required, and completes the saline and alkaline removing and dehydration of whole waste residues
Construction；；
9, when electrode C connection, sequence of construction is as follows：
1）After the completion of first layer waste residue paves, the cathode sets of first layer electrode are connect to the cathode of power supply, anode unit electrode is connect
The anode of power supply.A is in charge of in the water inlet of each layer connection cathode simultaneously and is connected to water inlet manifold A, the water inlet of jointed anode is in charge of
Negative A is connected to the negative A of water inlet manifold；A is in charge of in the draining for being connected to cathode and is connected to main sewer A；The row of anode will be connected to
The negative A of moisture pipe is connected to the negative A of main sewer.Apply the voltage of design；It is in charge of A through water inlet simultaneously and water inlet is in charge of negative A supply and is fitted
The particular liquid of amount.Start the dehydration of first layer waste residue and removes saline and alkaline process；
2）Continue that second layer electrode is arranged at the same time；
3）Water content drops to its bearing capacity and can satisfy it after second layer electrode is installed, and in the first layer waste residue
On pave after next waste residue layer, continue the second layer waste residue that paves（At this point, the bearing capacity of first layer waste residue may only can satisfy
Two layers of waste residue pave requirement, not necessarily meet the standard of design power-off, so first layer electrode may be powered off not yet）；
4）After the completion of second layer waste residue paves, by 1）Identical step and method, carry out second layer electrode and water pipe peace
Dress and saline and alkaline removing and dewatering work；
5）By 2）~4）Identical step and method completes each layer waste residue thereon and paves and electrode, the installation of water pipe and removing salt
Alkali and dewatering work；
6）Its bearing capacity is set to can satisfy subsequent give up that pave on it when the water content in each layer waste residue drops to certain degree
Slag blanket（The index or bearing capacity index of water content decline, which are tested to be calculated by design, to be determined）And each target ion concentration in waste residue
After the final index for reaching design code, this layer of power supply and feed flow source can be closed, remaining moisture is by thereon in this layer of waste residue
The gravity for covering waste residue drives discharge.Until the water content of top waste residue and each target ion concentration reach design object
Close all power and feed flow source；
7）It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe, continues to give up
The drainage procedure of slag, until the water content of waste residue reaches, design is final to be required, and the saline and alkaline removing and dehydration for completing whole waste residues are applied
Work；；
10, the voltage is 40V ~ 400V, and positive and negative anodes voltage gradient is 0.3V/cm ~ 4V/cm；The voltage applied, which can be, to be held
Continue stable voltage, is also possible to the voltage of intermittent entry.It is determined through field test by design according to waste residue physicochemical properties；
11, each segment length of the electrode is determined according to field condition by design, can be between 10m ~ 500m.Electrode gap and useless
Slag thickness is by waste residue physicochemical properties through field test by design determination, 0.5m ~ 3m.Upper layer and lower layer electrode vertically can be
Alignment can also be misaligned, such as can translate half interval makes upper layer and lower layer electrode form isosceles triangle arrangement；
12, the liquid component of the liquid supply pipe injection is tested according to salt and alkali component is determined by design.It can be fresh water, it can also be with
It is to use to match with waste residue intermediate ion by the well known chemical agent that the chemical reactions such as acid-base neutralization form desired ingredient
The liquid of system.Water pipe caliber, hydraulic pressure, water are tested to be determined by design, according to the ion concentration content for testing water outlet and can be set
Count the index adjustment water provided；
13, waste residue stacks total number of plies, the high thickness of heap of every layer of waste residue, the condition of next layer of waste residue of increase and time, according to waste residue
Property, tested by design calculate determine.
Technical effect of the invention：
1, dehydration and a variety of salt basic ions of removal can be completed at the same time；
2, sufficiently sharp since the present invention is dehydrated and is removed saline and alkaline work to saliferous offscum in alkali by the way of vertically stacking
With vertical direction spatial, therefore the dehydration of big scale of construction waste residue in limited site area, can be implemented and removed saline and alkaline；
3, due to that can be dehydrated and be removed saline and alkaline construction simultaneously with multilayer waste residue, and every layer of waste residue everywhere can substantially same stepping
It row draining and removes saline and alkaline, therefore is dehydrated and to remove saline and alkaline period total time short；
4, electric power dehydration is had complementary advantages in conjunction with gravity dehydration.It is fast using electric power rate of water loss, by pulpous state waste residue fast dewatering
The ability of waste residue is covered in carrying to allowing to be quickly obtained；Using big scale of construction Solid state fermentation entirety, time-consuming, can satisfy weight
The characteristics of time cycle required for power is dehydrated, energy consumption is drastically reduced using gravity dehydration.Independent electric power dehydration, after dehydration
The hole that reason moisture content occupies in waste residue is not reduced, therefore bearing power increase is limited；The gravity that waste residue is covered on and can eliminate hole
Gap increases substantially its bearing capacity, and the quick heap convenient for subsequent waste residue layer is built；
5, electrode horizontal direction arrangement has the following advantages：1）Since electrode length can increase considerably and can guarantee that voltage is uniform,
Therefore the waste residue scale of construction of single treatment can be significantly increased, and the processing time is reduced；2）Each technique such as electrode and water guide access arrangements is applied
Work is convenient；3）Convenient for the flowing of liquid in electrode, this quality for not only improving liquid in coordination electrode is conducive to coordination electrode again
Temperature rise, it is ensured that chemical environment and electric field quality are more advantageous to the smooth progress of saline and alkaline removing and dehydration in waste residue；4）Due to
There is gravity pressure, the gap generated between electrode and waste residue due to electrode temperature, which increases, is dehydrated waste residue can be made up, from
And it reduces resistance, improve working efficiency.
Embodiment
Embodiment one
Waste residue is that alkali factory produces the alkaline residue dumped, alkaline residue ingredient：In dry matter：Calcium sulfate 3%, calcium carbonate 64%, calcium chloride 6, chlorine
Change sodium 4%, calcium hydroxide 10%, aluminium oxide 2%.Grain fineness：50%<13 μm, 98%<25μm；Infiltration coefficient 7.2410-7cm/
s；PH value 10.9.Water content 232.3%.
Construction can store up site area 200m × 150m.Every layer of alkaline residue thickness 1m amounts to 40 layers of heap.
Using conducting polymer property management as electrode, diameter 2cm, tube wall is distributed along 30 ° of cross section, along length direction 5cmϕ2
Hole.Electrode length 150m.Interval 20m draws a conducting wire on the electrode.Apply stable DC source, between positive and negative electrode
Voltage gradient is 1.0V/cm.
Each target goals value：Chloride ion removal 90%, sodium ion removal 78%, for pH value less than 8, moisture content is reduced to 50%.
Construction method：
1, after smooth location, first layer electrode is spread.Electrode gap 1m；Layer of sand is as filtering layer after covering 5cm on the electrode, to prevent
Fine grained enters electrode tube in alkaline residue.By extraction wire on every strip electrode, it is connected in parallel in positive pole.By each electricity of the electrode group
Pole both ends are in charge of A with same water inlet respectively and same draining is in charge of A and is connect；
2, the waste residue of paving design thickness is use up for the waste residue collapsing for limiting place edge on four side of waste residue in this layer of electrode group
Head builds the cofferdam 1.2m high using the sub- heap of well known earth bag；
3, second layer electrode group is arranged on the waste residue layer.Electrode gap 1m；Layer of sand after place mat, covering 5cm is played to make on the electrode
For filtering layer, to prevent fine grained in alkaline residue from entering electrode tube.By extraction wire on every strip electrode, it is same to be connected in parallel in power supply
Pole.The adjacent electrode of this layer of electrode group connects the anode and cathode of power supply respectively.Each electrode two of anode will be connected in the electrode group
End is in charge of A with same water inlet respectively and same draining is in charge of A and is connect.Each electrode both ends difference of cathode will be connected in the electrode group
It is in charge of negative A with same water inlet and same draining is in charge of negative A and is connect；
4, pave 20cm waste residue in this layer of electrode group.By first layer（Singular layer）A and the second layer are in charge of in the water inlet of electrode（Even numbers
Layer）The water inlet manifold A that feed flow source A is led in A connection is in charge of in the water inlet of electrode；Negative A connection is in charge of in the water inlet of second layer electrode to supply
The negative A in liquid source.It A is in charge of in the draining for the electrode group for connecting positive pole is connected to and lead to the main sewer A of liquid storage pool A；It will connection
The draining of the electrode group of power cathode is in charge of negative A and is connected to the negative A of main sewer for leading to the negative A of liquid storage pool.Apply the voltage of design,
Controlling the voltage gradient between positive and negative electrode is 1.0V/cm；Appropriate tap water is supplied by water inlet manifold A simultaneously, passes through water inlet
General pipeline 0.5% acetic acid of negative A instillation makes the liquid in cathode keep pH=6.5 or so.Two electrode liquid supply rates are that can make drainpipe
Water flow keeps continuous thread.Start the dehydration of first layer waste residue and removes saline and alkaline process；
5, when first layer waste residue, which is dewatered to, can support oneself and can bear upper layer waste residue weight, earth bag is loaded with this layer of waste residue
Increase the cofferdam 1.0m on place all around weir；The approximately equivalent sub-layer layer-by-layer casting of point three thickness in second layer electrode group
The useless thickness of slag layer of waste residue extremely design；
6, when the second layer waste residue casting pave after the completion of, by the step of 1 and method installation third layer（Singular layer）Electrode and water pipe；
7, pave 20cm waste residue in this layer of electrode group.By third layer（Singular layer）The water inlet of electrode is in charge of A connection and leads to feed flow
The water inlet manifold A of source A；It A is in charge of in draining is connected to and lead to the main sewer A of liquid storage pool A；Apply the voltage of design, control is just
Voltage gradient between negative electrode is 1.0V/cm；Appropriate tap water is supplied by water inlet manifold A simultaneously.Liquid supply rate is that can make
Drainpipe water flow keeps continuous thread.Start the dehydration of second layer waste residue and removes saline and alkaline process；
8, when second layer waste residue, which is dewatered to, can support oneself and can bear upper layer waste residue weight, earth bag is loaded with this layer of waste residue
Increase the cofferdam 1.0m on place all around weir；The approximately equivalent sub-layer layer-by-layer casting of point three thickness in third layer electrode group
The useless thickness of slag layer of waste residue extremely design；
9, after the completion of the casting of third layer sludge paves, by the step of 3 and method installs the 4th layer（Even numbers layer）Electrode and water pipe；
10, pave in the 4th layer of electrode group after 20cm sludge, apply the voltage of design to this layer of electrode, control positive and negative electrode it
Between voltage gradient be 1.0V/cm；Tap water is supplied by water inlet manifold A simultaneously, passes through water inlet manifold 0.5% acetic acid of negative A instillation
The liquid in cathode is set to keep pH=6.5 or so.Two electrode liquid supply rates are that drainpipe water flow can be made to keep continuous thread i.e.
It can.Start the dehydration of third layer waste residue and removes saline and alkaline process；
11, above-mentioned 5 ~ 10 repetitive operation is pressed, until reaching the waste residue number of plies of design.Advance the speed need and the lower waste slag of waste residue layer
Drainage rates and gain in strength rate are coordinated, and are calculated and are determined based on test result by design, with appropriate useless in top electrode group
Slag covering, plays guard electrode.Each layer electrode is parallel to each other；The electrode of singular layer electrode group and even numbers layer electricity from bottom to top
The electrode runs parallel of pole group is staggered 0.5m；
12, tests determined, after every layer of electrode is connected 14 days, with the attenuating of the water content in waste residue, its bearing capacity can expire
The sufficient subsequent waste residue layer that paves on it connects each target ion concentration in 24 days waste residues in every layer of electrode and reaches design code most
Whole index can close this layer of power supply and water source, and remaining moisture drives discharge by the gravity for covering waste residue thereon in waste residue.Until
The water content and salt alkali concentration of two layers of waste residue of highest reach design object, can close all power and feed flow source；It is upper cover it is useless
Under slag gravity, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe, until the last layer electrode power off 60
After it, the water content of waste residue reaches design requirement, completes the saline and alkaline removing and dehydration construction of whole waste residues.
Embodiment two
Waste residue is that alkali factory produces the alkaline residue dumped, alkaline residue ingredient：In dry matter, calcium sulfate 5.59%, calcium carbonate 46.46%, chlorination
Calcium 9.82%, sodium chloride 4.85%, calcium oxide 3.35%, magnesium hydroxide 9.34%, silica 2.52%, acid non-soluble substance 15.05%；Contain
Water rate 324%.Grain fineness 50%<1 μm, 98%<20μm；Infiltration coefficient 1.0510-7cm/s；PH value 11.6.
Construction can store up site area 120m × 200m.Every layer of alkaline residue thickness 1.0m amounts to 40 layers of heap.Cathode is：Diameter 1cm
The PVC water pipe of Carbon Fiber Cables housing diameter 2cm, tube wall are netted, outermost layer packet layer of non-woven fabric.Anode be 1cm × 0.5cm not
Become rusty steel bar piece, the PVC water pipe of housing diameter 2cm, and tube wall is netted, outermost layer packet layer of non-woven fabric.Every long 60m of segment electrode,
It is spaced 20m on electrode and draws a conducting wire.The electrode gap of every layer of electrode is 1.0m.Power supply mode is intermittent power supply, power supply
It 30 minutes, rests 30 minutes.Controlling the voltage gradient between positive and negative electrode is 2.5V/cm.
Various target goals values：Chloride ion removal 90%, sodium ion removal 78%, pH value is less than 8.Moisture content is reduced to 50%.
Construction method：
1, after smooth location, first layer electrode is spread.By extraction wire on every strip electrode, it is connected in parallel in the same pole of power supply.Yin-yang
Electrode is spaced.The both ends of cathode electrodes all in this layer of electrode are in charge of A with same water inlet respectively and A is in charge of in same draining
Connection；Negative A is in charge of at the both ends of anode electrodes all in this layer of electrode with same water inlet respectively and same draining is in charge of negative A and is connected
It connects；
2, the cofferdam 1.5m high is done with plain soil in place surrounding, in the thick slurry shape alkaline residue of this layer of electrode group upper design thickness；
3, after the completion of first layer waste residue paves, the cathode sets of first layer electrode are connect to the cathode of power supply, anode unit electrode is connect
The anode of power supply.A is in charge of in the water inlet of this layer of electrode cathode group is connected to the water inlet manifold A towards feed flow source A simultaneously, by each layer
The water inlet of electrode anode group is in charge of negative A and is connected to the negative A of water inlet manifold towards the negative A in feed flow source；By the draining of electrode cathode group point
Pipe A is connected to the main sewer A for leading to liquid storage pool A；It negative A is in charge of in the draining of electrode anode group is connected to and lead to the negative A of liquid storage pool
The negative A of main sewer.Apply the voltage of design, while supplying suitable tap water through water inlet pipe, keeps drainpipe to have continuous thin
Stream.Start the dehydration and saline and alkaline reset procedure of first layer waste residue；
4, at the same time by the step of 1 and method continue be arranged second layer electrode；Each electrode of every layer of electrode group and other each layers
Electrode is aligned one by one, while each layer electrode in same vertical plane being made also to be that anodic-cathodic is spaced；
5, when first layer waste residue slurry, which is dewatered to, can support oneself and can bear upper layer alkaline residue weight, with this layer of alkaline residue in place four
Increase the cofferdam 1.0m on all element earth cofferdams；The approximately equivalent sub-layer layer-by-layer casting thick slurry of point three thickness in second layer electrode group
The useless thickness of slag layer of shape alkaline residue extremely design；
6, after the completion of the casting of second layer waste residue paves, by the step of 3 and method installation second layer electrode and water pipe, apply and design
Voltage.Start the dehydration and saline and alkaline reset procedure of second layer waste residue；
7,4 are repeated）~ 6）Identical step and method carries out each layer waste residue thereon and paves the installation with electrode and water pipe, and
Saline and alkaline removing work.Until reaching the waste residue number of plies of design.10cm alkaline residue is covered in top electrode group, plays the work of guard electrode
With；
8, tests determined, after every layer of electrode is connected 17 days, with the discharge of moisture in waste residue, it can support oneself and can hold
By upper layer alkaline residue weight, the upper layer alkaline residue that paves can be poured.After every layer of electrode is connected 28 days, each target ion concentration in waste residue
The final index for reaching design code can close this layer of power supply and water source, and remaining moisture by covering waste residue thereon in waste residue
Gravity drives discharge.Until the water content of top waste residue and each target ion concentration reach design object, whole can be closed
Power supply and feed flow source；It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe,
To after the last layer electrode power off 90 days, the water content of waste residue reaches the final requirement of design, completes the saline and alkaline removing of whole waste residues
It constructs with dehydration.
Embodiment three
Waste residue is that aluminium manufacturer produces the red mud dumped, red mud ingredient：In dry matter：Calcium oxide 40.88%, aluminium oxide 7.48%, oxidation
Silicon 25.36, iron oxide 1.29%, sodium oxide molybdena 3.19%, potassium oxide 1.04%, titanium oxide 1.72%, magnesia 2.12%；Fluorine
Content 3000.3mg/kg, wherein solvable fluorine content 425.1mg/kg；pH=10.9.Moisture content 116%.Grain fineness：25%<10
μm, 60%<20 μm, 90%<50 μm, infiltration coefficient 3.1510-5cm/s。
Construction can store up 200 × 300m of site area.Every layer of alkaline residue thickness 1.0m amounts to 45 layers of heap.
Using commercially available conducting polymer drain bar as electrode, every long 40m of segment electrode, every 20m extraction wire on electrode.Respectively
The electrode gap of layer electrode is 1.0m.Inter-electrode voltage gradient 1.8V/cm, power supply mode are intermittent power supply, are powered 15 points
Clock rests 15 minutes.Cathode and anode inject fresh water.
Various target goals values：Solvable removal efficiency of flouride 90%, pH value is less than 8.
Construction method：
1, after smooth location, first layer electrode is spread.By extraction wire on every strip electrode, it is connected in parallel in the same pole of power supply.It should
Each electrode both ends of electrode group are in charge of to be in charge of with same draining with same water inlet respectively to be connect；
2, the cofferdam 1.2m high is done with plain soil in place surrounding, in the thick slurry shape waste residue slurry of this layer of electrode group upper design thickness；
3, second layer electrode group is arranged in the way of 1 on the waste residue layer.Each electrode of every layer of electrode group and other each layer electrodes
It is aligned one by one；
4,20cm waste residue slurry is first poured in second layer electrode group.The cathode that first layer electrode group is connect to power supply, by second layer electricity
Pole group connects the anode of power supply.A is in charge of in first layer water inlet simultaneously and is connected to water inlet manifold A, the water inlet of second layer electrode is in charge of
The negative A of negative A connection water inlet manifold；By the draining for the electrode group for connecting power cathode be in charge of A be connected to lead to liquid storage pool A draining it is total
Pipe A；It negative A is in charge of in the draining for the electrode group for connecting positive pole is connected to and lead to the negative A of main sewer of the negative A of liquid storage pool；Apply
The voltage of design；Controlling the voltage gradient between positive and negative electrode is 1.8V/cm；Appropriate tap water is supplied to each water inlet pipe simultaneously,
Drainpipe is kept to have continuous thread.Start the dehydration and saline and alkaline reset procedure of first layer waste residue；
5, when the water content in first layer waste residue drop to its bearing capacity can satisfy pave the second layer waste residue after（Water content decline
Index or bearing capacity index by test determine）, increase the cofferdam 1.0m on the surrounding element earth cofferdam of place with this layer of waste residue；Divide three
The approximately equivalent remaining waste residue slurry of the sub-layer layer-by-layer casting second layer of a thickness；
6, the step of pressing 1 and method, are laid with third layer electrode and water pipe on second layer waste residue；
7,20cm waste residue slurry is first poured in third layer electrode group.When target ion concentration each in first layer waste residue reaches design rule
Fixed final index, and the water content in waste residue drops to after its bearing capacity can satisfy and pave subsequent waste residue layer on it（Contain
The index or bearing capacity index of water decline are determined by test）, the power supply and feed flow of first layer and second layer electrode can be closed
Source.Remaining moisture drives discharge by the gravity for covering waste residue thereon in waste residue.It, will by the cathode of second layer electrode group reconfiguration power supply
Third layer electrode group connects the anode of power supply.A correspondingly is in charge of in the water inlet of second layer electrode and is connected to water inlet manifold A, will be drained
It is in charge of A and is connected to main sewer A；Negative A is in charge of in the water inlet of third layer electrode group and is connected to the negative A of water inlet manifold, negative A is in charge of in draining
It is connected to the negative A of main sewer.Apply the voltage of design；It is in charge of the appropriate tap water of supply through each water inlet simultaneously.It is useless to start the second layer
The dehydration and the saline and alkaline process of removing of slag；
8,5 ~ 7 identical steps and method repetitive operation are pressed, each layer waste residue thereon is carried out and paves and the installation of electrode, water pipe step
Rapid and saline and alkaline removing and dewatering work.Until the water content of top waste residue and each target ion concentration reach design object,
All power and feed flow source can be closed；It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained
It is discharged through drainpipe, until the moisture content of waste residue reaches design requirement, completes the saline and alkaline removing and dehydration construction of whole waste residues；
9, tests determined, after every layer of electrode is connected 13 days, with the discharge of moisture in waste residue, it can support oneself and can hold
By upper layer alkaline residue weight, the upper layer alkaline residue that paves can be poured.After every layer of electrode is connected 32 days, each target ion concentration in waste residue
The final index for reaching design code, can close this layer of power supply and water source.Remaining moisture by covering waste residue thereon in waste residue
Gravity drives discharge.Until the water content of top waste residue and each target ion concentration reach design object, whole can be closed
Power supply and feed flow source；It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe,
To after the last layer electrode power off 60 days, the water content of waste residue reaches design requirement, completes the saline and alkaline removing of whole waste residues and takes off
Water construction.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of high-moisture low-permeability waste residue removes saline and alkaline dehydration combined governance method, it is characterized in that：Include the following steps：
Prepare not only electrically conductive but also water through tubulose or band electrode；By several above-mentioned electrodes at regular intervals, in parallel, horizontal direction cloth
Composition electrode group is set, the electrode group is alternate with certain thickness waste residue layer to be stacked, in the plane perpendicular to electrode, to any one
Branch electrode, the polarity and the connect direct current of the electrode of at least one the connect DC power supply of electrode in the electrode around the electrode
The polarity in source is opposite；By the liquid of electrode injection proper composition and quantity, direct current is applied to electrode and generates electricity in waste residue
, under electric field action, saline and alkaline contained soluble ion is and appropriate to the electrode transfer electrically opposite with it in waste residue
Liquid is taken out of through the water-filled pipe of electrode, to realize removing saline and alkaline in waste residue；The moisture in waste residue is to electrode transfer simultaneously,
It is discharged from the water-filled pipe of electrode；In addition, it is upper cover waste residue gravity under the action of, the water in waste residue be further squeezed press to it is permeable
Electrode, from the water-filled pipe of electrode be discharged.
2. according to the method described in claim 1, it is characterized in that：Electrode is one of following four configuration：
The pipe being made of an electrically conducting material, tube wall have water-permeable aperture by the interval of design and aperture；
It is constituted in conductive material wire rod housing water pipe, wherein water pipe tube wall is by the interval and aperture of design with water-permeable small
Hole；
1）Or 2）Outsourcing filtering layer is constituted again on the basis of the configuration；
Conductive plastics drain bar；
Wherein, the conductive material is：Carbon fiber, corrosion-resistant metal materials, graphite, conducting polymer, by carbon fiber, metal,
The electric conductor of the compound composition of one or more and polymer in graphite；The water pipe is non-conductive water pipe, including plastic tube, no
The pipe that conductive fiber material is woven into is able to maintain the pipe or the unfixed pipe of cross sectional shape of specific cross-sectional shape；The filtering layer
The cloth that the cloth or chemical fibre being made into for permeable flexible material, including non-woven fabrics, plant fiber are made into；The electrode all makes
The electrode of direct current cathode is connect using another using a kind of electrode with same electrode, or the electrode for connecing DC power anode
Kind electrode.
3. according to the method described in claim 1, it is characterized in that：The waste residue is permeability lower than 10-4Thin of cm/s
For grain containing saline and alkaline waste residue, it is soluble for intending the saline and alkaline of removal.
4. the method according to claim 1, wherein further comprising the steps：
It will design and determine length, interval sum number purpose pipe or band electrode horizontal direction parallel arrangement, one layer of electrode group is formed, every
Appropriate intervals extraction wire on branch electrode is connected in parallel in the same pole of power supply, will connect the same polarity of power supply in the electrode group
Each electrode both ends be in charge of respectively with same water inlet and be in charge of and connect with same draining；
The waste residue of paving design thickness in this layer of electrode group, the waste residue end carry out supporting and retaining system；
Press 1 again on the waste residue layer）Mode arrange one layer of electrode group, the electrode of this layer of electrode group and other each layer electrode groups
Electrode is parallel to each other；
2 are pressed in this layer of electrode group）Mode paving design thickness again waste residue；
By above-mentioned 1）~4）Repetitive operation, carries out the installation of each layer waste residue thereon to pave with electrode, water pipe, until reaching design
The waste residue number of plies；Advancing the speed for waste residue layer need to be coordinated with lower waste slag drainage rates and gain in strength rate, wherein top
It is covered in electrode group with the appropriate pure land or waste residue, plays guard electrode.
5. according to the method described in claim 4, it is characterized in that：The arrangement mode of each layer electrode group connection electric power polarity be with
One of lower four kinds：
1）Electrode A 1 connects：Singular layer electrode group connects the same polarity of power supply, and even numbers layer electrode group connects the opposite polarity of power supply；
2）Electrode A 2 connects：Singular layer electrode group connects the same polarity of power supply, and the adjacent electrode difference in even numbers layer electrode group
Connect the opposite polarity of power supply；Or even numbers layer electrode group connects the same polarity of power supply, and the adjacent electrode in singular layer electrode group divides
The opposite polarity of power supply is not connect；
3）Electrode B connection：During except saline and alkaline, the lower electrode group of every layer of waste residue all connects the same polarity of power supply, and every layer
The upper electrode group of waste residue all connects the opposite polarity of power supply；
4）Electrode C connection：The adjacent electrode of each layer of electrode group connects the anode and cathode of power supply respectively, and each layer electrode group is vertical
Adjacent electrode in same plane is also the anode and cathode for connecing power supply respectively.
6. according to the method described in claim 4, it is characterized in that：The arrangement mode that electrode group connects electric power polarity is different, certainly
Different sequences of construction is determined；
When the connection of electrode A 1 or A2 connection, sequence of construction is as follows：
After the completion of third layer waste residue paves, first layer electrode group and third layer electrode group are connect to a certain pole of power supply（Call A in the following text
Pole）；Electrode A 1 is connected, second layer electrode group is connect to the opposite pole of power supply（Call the negative pole A in the following text）；Electrode A 2 is connected, by second
Layer electrode group adjacent electrode connects the pole A and the negative pole A of power supply respectively；Simultaneously by the water inlet point of the electrode group of each layer connection pole power supply A
Pipe（It calls in the following text into water and is in charge of A）Be connected to the water inlet manifold A for leading to feed flow source A, by each layer connection the negative pole A of power supply electrode group into
Moisture pipe（It calls in the following text into water and is in charge of negative A）It is connected to the negative A of water inlet manifold for leading to the negative A in feed flow source；The electrode group of the pole power supply A will be connected
Draining be in charge of（It calls draining in the following text and is in charge of A）It is connected to the main sewer A for leading to liquid storage pool A；The electrode group of the negative pole A of power supply will be connected
Draining be in charge of（It calls draining in the following text and is in charge of negative A）It is connected to the negative A of main sewer for leading to the negative A of liquid storage pool；Apply the voltage of design；Together
When be in charge of A through water inlet respectively and water inlet is in charge of negative A and supplies suitable particular liquid；Start the dehydration of first layer and second layer waste residue
With the saline and alkaline process of removing；
Continue the 4th layer of setting and layer 5 waste residue and the 4th layer and layer 5 electrode at the same time；
After the completion of layer 5 waste residue paves, layer 5 electrode group is connect to the pole A of power supply, the 4th layer of electrode group is connect into the negative of power supply
The pole A（Electrode A 1 connects）Or adjacent electrode is connect to the pole A and the negative pole A of power supply respectively（Electrode A 2 connects）；Each layer is intake simultaneously
It is in charge of A and is connected to water inlet manifold A, negative A is in charge of in the water inlet of each layer and is connected to the negative A of water inlet manifold；A is in charge of in draining and is connected to draining
General pipeline A；Negative A is in charge of in draining and is connected to the negative A of main sewer；Apply the voltage of design；It is in charge of A and water inlet through water inlet respectively simultaneously
It is in charge of negative A and supplies suitable particular liquid；Start the saline and alkaline process of removing of third layer and the 4th layer of waste residue；
By 2）With 3）Identical step repetitive operation, one group of successive of every two layers of waste residue complete paving and electrode and water for each layer waste residue
The installation steps of pipe, and it is dehydrated and removes saline and alkaline work；
With the discharge of moisture content and salt basic ion in each layer waste residue, expire its bearing capacity when the water content in waste residue drops to
Foot after the paving of one layer of waste residue, can carry out subsequent waste residue layer and pave thereon；When target ion concentration each in waste residue reaches design
Set quota and water content drop to after so that its bearing capacity is can satisfy and is paved subsequent waste residue layer thereon, can successive close electricity
Source and feed flow source, until two layers of waste residue of highest reaches design object；
It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe, until waste residue
Water content reach that design is final to be required, complete the saline and alkaline removing and dehydration construction of whole waste residues；
When electrode B connection, sequence of construction is as follows：
After the completion of second layer waste residue paves, first layer electrode group is connect to the pole A of power supply, second layer electrode group is connect into the negative of power supply
The pole A；A is in charge of in water inlet is connected to water inlet manifold A simultaneously, and the negative A of negative A connection water inlet manifold is in charge of in water inlet；A is in charge of in draining to connect
It is connected to main sewer A；Negative A is in charge of in draining and is connected to the negative A of main sewer；Apply the voltage of design；Simultaneously through water inlet be in charge of A and
Water inlet is in charge of negative A and supplies suitable particular liquid；Start the dehydration and saline and alkaline reset procedure of first layer waste residue；
Continue that third layer electrode is arranged at the same time；Its bearing capacity is set to can satisfy it when the water content of first layer waste residue drops to
After the paving of upper one layer of waste residue, paving for third layer waste residue can be carried out；
After the completion of third layer waste residue paves, and the water content in first layer waste residue drops to and can satisfy its bearing capacity thereon
After pave subsequent waste residue layer, and each target ion concentration reaches the index of design, the electricity of first layer and second layer electrode is closed
Source and feed flow source；By the pole A of second layer electrode group reconfiguration power supply, third layer electrode group is connect to the negative pole A of power supply, it correspondingly will be into
Moisture pipe A is connected to water inlet manifold A, and negative A is in charge of in water inlet and is connected to the negative A of water inlet manifold；A is in charge of in draining and is connected to draining always
Pipe A；Negative A is in charge of in draining and is connected to the negative A of main sewer；Apply the voltage of design；Through water inlet be in charge of A simultaneously and water inlet be in charge of it is negative
A supplies suitable particular liquid；Start the dehydration of second layer waste residue and removes saline and alkaline process；
Repeat 2）With 3）Identical step and method, complete thereon each layer waste residue pave with electrode, water pipe installation steps and
Saline and alkaline removing and dewatering work；Until the water content of top waste residue and each target ion concentration reach design object, Ji Keguan
Close all power and feed flow source；
It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe, until waste residue
Water content reach design requirement, complete the saline and alkaline removing and dehydration construction of whole waste residues；
When electrode C connection, sequence of construction is as follows：
After the completion of first layer waste residue paves, the cathode sets of first layer electrode are connect to the cathode of power supply, anode unit electrode is connect into electricity
The anode in source；A is in charge of in the water inlet of each layer connection cathode simultaneously and is connected to water inlet manifold A, negative A is in charge of in the water inlet of jointed anode
It is connected to the negative A of water inlet manifold；A is in charge of in the draining for being connected to cathode and is connected to main sewer A；The draining point of anode will be connected to
It manages negative A and is connected to the negative A of main sewer；Apply the voltage of design；Through water inlet be in charge of A simultaneously and water inlet to be in charge of negative A supply suitable
Particular liquid；Start the dehydration of first layer waste residue and removes saline and alkaline process；
This presses 1 simultaneously）The step of and method continue be arranged second layer electrode and water pipe installation；Each electrode of every layer of electrode group with
Other each layer electrodes are aligned one by one, while each layer electrode in same vertical plane being made also to be that anodic-cathodic is spaced；
When the water content in first layer waste residue drop to its bearing capacity can satisfy pave subsequent waste residue layer on it after, second
The alkaline residue of layer electrode group upper design thickness；
After the completion of the casting of second layer waste residue paves, apply the voltage of design to second layer electrode；Simultaneously through water inlet be in charge of A and into
The negative A of moisture pipe supplies suitable particular liquid；Start the dehydration of second layer waste residue and removes saline and alkaline process；
Repeat 2）~ 4）Identical step and method completes each layer waste residue paves with electrode, water pipe thereon installation and removing
Saline and alkaline and dewatering work；
With moisture content and saline and alkaline discharge in each layer waste residue, its bearing capacity is set to can satisfy it when the water content in waste residue drops to
On pave subsequent waste residue layer, and after each target ion concentration reaches the final index of design code in waste residue, can successive close
Power supply and feed flow source；Until the water content of top waste residue and each target ion concentration reach design object, whole can be closed
Power supply and feed flow source；
It is upper cover waste residue gravity under, the water in waste residue continues through the electrode that can be drained and is discharged through drainpipe, until waste residue
Water content reach that design is final to be required, complete the saline and alkaline removing and dehydration construction of whole waste residues.
7. according to claim 1 and method of claim 6, which is characterized in that voltage is 40V ~ 400V, positive and negative pole tension
Gradient is 0.3V/cm ~ 4V/cm；The voltage applied is the voltage of continual and steady voltage or intermittent entry, according to useless
Slag physicochemical properties are determined through field test by design.
8. according to claim 1 and method of claim 6, which is characterized in that electrode gap and waste residue with a thickness of 0.5m ~
3m, upper layer and lower layer electrode vertical non-alignment or is misaligned, and each segment length of electrode is physico according to waste residue between 10m ~ 500m
It learns property and is determined through field test by design.
9. according to claim 1 and method of claim 6, which is characterized in that the liquid of the liquid supply pipe injection at
Dividing is fresh water, or the liquid of desired ingredient can be formed by acid-base neutralization, and liquid component and quantity are according to waste residue physics
Chemical property is determined through field test by design.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114082769A (en) * | 2021-11-03 | 2022-02-25 | 浙江坤德创新岩土工程有限公司 | Large-volume alkaline residue electric dechlorination method |
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