CN108751513A - A kind of system being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization - Google Patents
A kind of system being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization Download PDFInfo
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- CN108751513A CN108751513A CN201810802972.0A CN201810802972A CN108751513A CN 108751513 A CN108751513 A CN 108751513A CN 201810802972 A CN201810802972 A CN 201810802972A CN 108751513 A CN108751513 A CN 108751513A
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- thermal desorption
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 77
- 238000003795 desorption Methods 0.000 title claims abstract description 35
- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000004062 sedimentation Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 238000009833 condensation Methods 0.000 claims abstract description 24
- 230000005494 condensation Effects 0.000 claims abstract description 24
- 239000010802 sludge Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000004064 recycling Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000006228 supernatant Substances 0.000 claims abstract description 6
- 238000001179 sorption measurement Methods 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 238000011068 loading method Methods 0.000 claims description 12
- 229910052717 sulfur Inorganic materials 0.000 claims description 12
- 239000011593 sulfur Substances 0.000 claims description 12
- 239000005864 Sulphur Substances 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 8
- 238000000197 pyrolysis Methods 0.000 description 6
- 239000002910 solid waste Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000009298 carbon filtering Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 229940100892 mercury compound Drugs 0.000 description 2
- 150000002731 mercury compounds Chemical class 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
-
- 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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Soil Sciences (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
One kind is for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization system.The water outlet of condensation cooling system is connected with the water inlet of settling tank, the supernatant water outlet of settling tank is connected with heat exchanger, heat exchanger is connected with the cycle water inlet of condensation cooling system and cooling tower, the outlet of sludge tank is connected with the mud entrance of plate and frame filter press, the press filtration fluid pipeline of plate and frame filter press is connected with the entrance of the first sedimentation basin, the water outlet of first sedimentation basin is connected with the entrance of reaction tank, the outlet of reaction tank is connected with the entrance of the second sedimentation basin, the water outlet of second sedimentation basin is connected with the entrance of active carbon filter, the outlet of active carbon filter is connected with the entrance of cloth envelop collector, the liquid mercury pipeline of first sedimentation basin is connected with rich mercury solution recycling can；The mercury-containing sludge pipeline of second sedimentation basin is connected with the mercury-containing sludge entrance of plate and frame filter press, and the solid formation outlet of thermal desorption equipment is connected with the outlet of the solid formation of high temperature resistant cleaner.
Description
Technical field
The present invention relates to a kind of systems being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, belong to mercurous useless
Water process and its mercury resource utilization systems technology field.
Background technology
The recovery technique of Soil Mercury Pollution mainly has solidification and stabilization technology, Soil leaching technology, phytoremediation technology, heat
Desorption technique etc..Wherein, pyrolysis adsorption technology because its processing time is short, repairing effect is good, secondary pollution is small the features such as, it is considered to be
Handle one of the best-of-breed technology of the mercurous soil/solid waste of high concentration.Thermal desorption recovery technique is the volatile characteristic using mercury, will be contained
Mercury solid waste is heated to the critical boiling point of pollutant, and the mercury and mercuric compounds being adsorbed in mercurous solid waste is made to volatilize in a gaseous form
Out, a kind of recovery technique of these gaseous pollutants is finally focused on.The processing method of mercury vapour is mostly used at present
Condensation method and solution absorption method.Condensation method is divided into directly condensation and indirect condensing two ways, wherein indirect condensing mode exchanges heat
Less efficient, direct condensing mode heat transfer effect is preferable, but no matter uses which kind of mode that will all generate a large amount of technique waste water.Mesh
The preceding processing method for mercury-containing waste water includes flocculent precipitation, sulphide precipitation, active carbon adsorption, metal deoxidization
It is not to inhale technique waste water for mercurous waste pyrolysis Deng, these disposition of method spininess to mercury-containing waste waters such as chlor-alkali industries
Disposition.And the method for disposal for being directed to thermal desorption technique waste water at present is relatively simple, cannot recycle Elemental Mercury to greatest extent, cause
The waste of the energy.Application publication number is CN104289513A, data of publication of application is on January 21st, 2015 disclosure of the invention one kind
Mercury contaminated soil thermal desorption device and processing method, the device include pretreatment unit, feed unit, fuel supply unit, heat
Desorption unit, high-temperature dust removal unit, technique water treatment unit, discharging unit, tail gas cooling unit and tail gas treating unit.The hair
Bright middle thermal desorption technique waste water is merely through mud-water separation and quartz sand filtration, it is difficult to remove and then reach the ion state mercury in waste water
To reuse standard, Elemental Mercury can not be recycled to greatest extent.
Invention content
The purpose of the present invention is to solve the above-mentioned problems of the prior art, and then provide one kind and contain for thermal desorption
The system of mercury wastewater treatment and its mercury resource utilization.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of system being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, including：Thermal desorption equipment, resistance to height
Warm cleaner, condensation cooling system, sulfur loading active carbon adsorption tanks, air-introduced machine, settling tank, sludge tank, plate and frame filter press, first
Sedimentation basin, reaction tank, the second sedimentation basin, active carbon filter, cloth envelop collector, rich mercury solution recycling can, heat exchanger and cooling
The gas vent of tower, the thermal desorption equipment is connected with the gas access of high temperature resistant cleaner, high temperature resistant cleaner
Gas vent is connected with the gas access of condensation cooling system, and the gas vent and sulfur loading active carbon for condensing cooling system adsorb
The gas access of tank is connected, and the gas vent of sulfur loading active carbon adsorption tanks is connected with the air inlet of air-introduced machine；Condensation cooling
The water outlet of equipment is connected with the water inlet of settling tank, and the supernatant water outlet of settling tank is connected with heat exchanger, and heat is handed over
Parallel operation is connected with the cycle water inlet of condensation cooling system and cooling tower, settles the mud tube of pot bottom and the entrance of sludge tank
It is connected, the outlet of sludge tank is connected with the mud entrance of plate and frame filter press, the press filtration fluid pipeline of plate and frame filter press and
The entrance of one sedimentation basin is connected, and the water outlet of the first sedimentation basin is connected with the entrance of reaction tank, the outlet of reaction tank and the
The entrance of two sedimentation basins is connected, and the water outlet of the second sedimentation basin is connected with the entrance of active carbon filter, activated carbon filtering
The outlet of device is connected with the entrance of cloth envelop collector, and the liquid mercury pipeline of the first sedimentation basin is connected with rich mercury solution recycling can；The
The mercury-containing sludge pipeline of two sedimentation basins is connected with the mercury-containing sludge entrance of plate and frame filter press, the solid formation outlet of thermal desorption equipment
It is connected with the outlet of the solid formation of high temperature resistant cleaner.
Compared with prior art, the present invention has the following advantages：
(1) thermal desorption technique waste water can realize the recycling of Elemental Mercury to greatest extent after system disposition, realize mercury
Resource utilization.
(2) fully recovering saves the technique waste water generated in tail gas treating unit in the present invention without outer row after processing
Resource-saving.
(3) present invention can convert mercury compound to mercury simple substance, promote the Elemental Mercury rate of recovery.
Description of the drawings
Fig. 1 is the present invention for the processing of thermal desorption mercury-containing waste water and its structural schematic diagram of mercury resource utilization system.
Fig. 2 is the schematic diagram of sulfur loading active carbon adsorption tanks 4
Reference numeral in figure, 1 is thermal desorption equipment, and 2 be high temperature resistant cleaner, and 3 be condensation cooling system, and 4 be load
Sulphur absorbent charcoal adsorption tank, 5 be air-introduced machine, and 6 be settling tank, and 7 be sludge tank, and 8 be plate and frame filter press, and 9 be the first sedimentation basin, and 10 are
Reaction tank, 11 be the second sedimentation basin, and 12 be active carbon filter, and 13 be cloth envelop collector, and 14 be rich mercury solution recycling can, and 15 be heat
Exchanger, 16 be cooling tower, and 17 be sulfur loading active carbon.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in further detail：The present embodiment is being with technical solution of the present invention
Under the premise of implemented, give detailed embodiment, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 1, a kind of time being used for the processing of thermal desorption mercury-containing waste water and its mercury recycling involved by the present embodiment
Receipts system, including：Thermal desorption equipment 1, high temperature resistant cleaner 2, condensation cooling system 3, sulfur loading active carbon adsorption tanks 4, air inducing
Machine 5, settling tank 6, sludge tank 7, plate and frame filter press 8, the first sedimentation basin 9, reaction tank 10, the second sedimentation basin 11, activated carbon filtering
Device 12, cloth envelop collector 13, rich mercury solution recycling can 14, heat exchanger 15 and cooling tower 16, the gas of the thermal desorption equipment 1 go out
Mouth is connected with the gas access of high temperature resistant cleaner 2, gas vent and the condensation cooling system 3 of high temperature resistant cleaner 2
Gas access be connected, condensation cooling system 3 gas vent be connected with the gas access of sulfur loading active carbon adsorption tanks 4,
The gas vent of sulfur loading active carbon adsorption tanks 4 is connected with the air inlet of air-introduced machine 5；Condense the condensation waste pipe of cooling system 3
It is connected with the water inlet of settling tank 6, the outlet pipe of settling tank 6 is connected with the water inlet pipe of heat exchanger 15, heat exchanger 15
Outlet pipe with condensation cooling system 3 water inlet be connected, heat exchanger 15 is connected with cooling tower 16,6 bottom of settling tank
Mud tube be connected with the entrance of sludge tank 7, the outlet of sludge tank 7 is connected with the mud entrance of plate and frame filter press 8, sheet frame
The liquid mercury pipeline and press filtration waterpipe of filter press 8 are connected with the entrance of the first sedimentation basin 9, the water outlet of the first sedimentation basin 9
It is connected with the entrance of reaction tank 10, the outlet of reaction tank 10 is connected with the entrance of the second sedimentation basin 11, the second sedimentation basin 11
Water outlet be connected with the entrance of active carbon filter 12, the entrance of the outlet and cloth envelop collector 13 of active carbon filter 12
It is connected, the liquid mercury pipeline of the first sedimentation basin 9 is connected with rich mercury solution recycling can 14；The mercury-containing sludge pipeline of second sedimentation basin 11
It is connected with the mercury-containing sludge entrance of plate and frame filter press 8, solid formation outlet and the high temperature resistant cleaner 2 of thermal desorption equipment 1
Solid formation outlet is connected.
Pyrolysis of the thermal desorption equipment 1 for mercurous solid waste and soil so that the mercury and mercuric compounds in mercurous waste
Volatilization, and it is delivered to high temperature resistant cleaner 2 by the road.
The high temperature resistant cleaner 2 is used to remove the solid matter in high temperature pyrolysis air-breathing body.High temperature resistant cleaner 2
Outer layer be provided with heat insulation layer, can effectively avoid in dust removal process exhaust temperature reduction causes mercury regelation of volatilizing.
Condensation cooling of the condensation cooling system 3 for high temperature pyrolysis air-breathing body after dedusting, make its go to water process with
Mercury resource utilization unit is further processed.The sulfur loading active carbon adsorption tanks 4 are plural serial stage device (see Fig. 2), and cold
Solidifying cooling system is connected, for removing mercury remaining in tail gas, it is ensured that tail gas qualified discharge；The air-introduced machine can make thermal desorption list
Member keeps tiny structure, to ensure not excessive and as the few as possible generation solid particulate matter of the gas that thermal desorption comes out.
The settling tank 6 connects the condensation cooling system 3 in tail gas treating unit, for collecting the drop of the condensation in the device
Warm waste water, after waste water enters settling tank 6, under gravitational settling effect, particulate matter and liquid mercury in waste water are sunken to bottom, sedimentation
Supernatant in tank 6 is discharged by top weir, and cooling condensing plant 3 is back to after the cooling of over-heat-exchanger 15；The dirt
Mud tank 7 connects settling tank 6, and the mercurous mud that bottom is sunken in settling tank 6 squeezes into sludge tank 7 through pump, after chemicals dosing plant dosing,
The further flocculating setting of particulate matter in mud；The plate and frame filter press 8 connects sludge tank 7, and mercurous mud is through pump in sludge tank 7
It squeezes into plate and frame filter press 8, mud cake is generated after press filtration, liquid mercury and press filtration water enter in the first sedimentation basin 9, plate and frame filter press
8 mud cakes generated return to thermal desorption equipment 1 after collection, are reacted with activated carbon under high temperature anaerobic environment, make the HgS in mud cake
Equal mercury compounds are converted into Elemental Mercury under high temperature anaerobic environment, and liquid mercury is recycled after technique water treatment unit；Institute
State difference in specific gravity of first sedimentation basin 9 using liquid mercury and water so that liquid mercury is sunken to bottom, and supernatant enters in reaction tank；The richness
Mercury solution recycling can 14 connects 9 bottom of the first sedimentation basin, and the liquid mercury precipitated in the first sedimentation basin 9 enters rich mercury solution after collection and recycles
In tank 14；The richness mercury solution recycling can 14 is sealing device, for storing the liquid mercury after detaching；The connection of the reaction tank 10 the
One sedimentation basin 9, and it is equipped with chemicals dosing plant and blender, make mercury ion reaction generation hardly possible for adjusting pH value of waste water and adding medicament
It is dissolved in the mercuric sulphide precipitation of water；Second sedimentation basin 11 connects reaction tank 10, is used for mud-water separation, mercury-containing sludge is after precipitation
It is promoted in plate and frame filter press 8 by sludge pump and carries out press filtration, and supernatant is flow to by effluent weir in active carbon filter 12；Institute
It states active carbon filter 12 and connects the second sedimentation basin 11, for removing mercury remaining in water removal；The connection of the cloth envelop collector 13 is lived
Property carbon filter 12, for go water removal in residual solid particle, after Bag filter water outlet can be used as thermal desorption equipment discharging drop
Warm humidification water.
Embodiment 1
In certain project using pyrolysis adsorption technology to mercurous solid waste (total mercury content is about 300~1000mg/kg) at
It sets, a large amount of mercurous technique waste water is produced in repair process, after testing, mercury content is about in condensation cooling system water outlet
4.2mg/L, after this waste water is disposed by the set process system, mercury content is only 0.01mg/L in water outlet, meets integrated wastewater row
Put standard.Site disposal 100m3Solid waste recycles mercury metal about 4kg.
The foregoing is only a preferred embodiment of the present invention, these specific implementation modes are all based on the present invention
Different realization methods under general idea, and scope of protection of the present invention is not limited thereto, it is any to be familiar with the art
Technical staff in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in, should all cover the present invention
Within protection domain.Therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (4)
1. a kind of system being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, which is characterized in that including：Thermal desorption
Equipment, high temperature resistant cleaner, condensation cooling system, sulfur loading active carbon adsorption tanks, air-introduced machine, settling tank, sludge tank, sheet frame pressure
Filter, the first sedimentation basin, reaction tank, the second sedimentation basin, active carbon filter, cloth envelop collector, rich mercury solution recycling can, heat exchange
The gas vent of device and cooling tower, the thermal desorption equipment is connected with the gas access of high temperature resistant cleaner, and high temperature resistant is removed
The gas vent of dirt equipment is connected with the gas access of condensation cooling system, and the gas vent for condensing cooling system is lived with sulphur is carried
The gas access of property charcoal adsorption tanks is connected, and the gas vent of sulfur loading active carbon adsorption tanks is connected with the air inlet of air-introduced machine；
The water outlet of condensation cooling system is connected with the water inlet of settling tank, and the supernatant water outlet of settling tank is connected with heat exchanger
Logical, heat exchanger is connected with the cycle water inlet of condensation cooling system and cooling tower, settles the mud tube and sludge of pot bottom
The entrance of tank is connected, and the outlet of sludge tank is connected with the mud entrance of plate and frame filter press, the press filtration liquid of plate and frame filter press
Pipeline is connected with the entrance of the first sedimentation basin, and the water outlet of the first sedimentation basin is connected with the entrance of reaction tank, reaction tank
Outlet is connected with the entrance of the second sedimentation basin, and the water outlet of the second sedimentation basin is connected with the entrance of active carbon filter, living
Property carbon filter outlet be connected with the entrance of cloth envelop collector, the liquid mercury pipeline of the first sedimentation basin and rich mercury solution recycling can phase
Connection；The mercury-containing sludge pipeline of second sedimentation basin is connected with the mercury-containing sludge entrance of plate and frame filter press, and thermal desorption equipment is consolidated
Phase object is exported to be connected with the outlet of the solid formation of high temperature resistant cleaner.
2. the system according to claim 1 for being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, feature
It is, the outer layer of high temperature resistant cleaner is provided with heat insulation layer.
3. the system according to claim 1 for being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, feature
It is, the sulfur loading active carbon adsorption tanks are plural serial stage device.
4. the system according to claim 1 for being used for the processing of thermal desorption mercury-containing waste water and its mercury resource utilization, feature
It is, the richness mercury solution recycling can is sealing device.
Priority Applications (1)
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| CN201810802972.0A CN108751513B (en) | 2018-07-18 | 2018-07-18 | System for be used for thermal desorption to contain mercury waste water treatment and mercury recycling recovery thereof |
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| CN201810802972.0A CN108751513B (en) | 2018-07-18 | 2018-07-18 | System for be used for thermal desorption to contain mercury waste water treatment and mercury recycling recovery thereof |
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