CN208250091U - A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride - Google Patents
A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride Download PDFInfo
- Publication number
- CN208250091U CN208250091U CN201820482416.5U CN201820482416U CN208250091U CN 208250091 U CN208250091 U CN 208250091U CN 201820482416 U CN201820482416 U CN 201820482416U CN 208250091 U CN208250091 U CN 208250091U
- Authority
- CN
- China
- Prior art keywords
- salt wastewater
- mercurous
- vinyl chloride
- mercury
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 87
- 238000012545 processing Methods 0.000 title claims abstract description 29
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 22
- 238000001704 evaporation Methods 0.000 claims abstract description 17
- 230000008020 evaporation Effects 0.000 claims abstract description 17
- 238000000889 atomisation Methods 0.000 claims abstract description 12
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000004062 sedimentation Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 14
- 239000006228 supernatant Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 238000004064 recycling Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- QFAXIZQBSCGJMA-UHFFFAOYSA-N mercury;hydrate Chemical compound O.[Hg] QFAXIZQBSCGJMA-UHFFFAOYSA-N 0.000 description 4
- 239000003595 mist Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000000909 electrodialysis Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000005997 Calcium carbide Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 150000002730 mercury Chemical class 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- -1 sulfate radical Chemical class 0.000 description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 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
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
The utility model belongs to carbide production vinyl chloride field of waste water treatment, the mercurous high-salt wastewater processing system of specifically a kind of carbide production vinyl chloride, the system is that mercurous high-salt wastewater is passed sequentially through to pH adjusting, chemical reaction sedimentation, heavy metal chelating and filtering, concentration filters pressing, cold source evaporation atomization, vapor condensation, condensing crystallizing, is centrifugated operation, substep removes mercury and salt and alkali component in mercurous high-salt wastewater, and treated mercury content is in 0.003mg/L or less, Cl‑Content is used in 800mg/L hereinafter, returning to production system, realizes the zero-emission of mercurous high-salt wastewater.The problems such as the utility model solves mercurous high-salt wastewater zero-emission in existing vinyl chloride industry and recycles, has saved water resource, and operation and maintenance cost is very low, has effectively achieved energy-saving and emission-reduction and protects the purpose of environment.
Description
Technical field
The utility model belongs to mercurous high-salt wastewater process field, especially a kind of mercurous height of carbide production vinyl chloride
Salt waste water treatment system.
Background technique
A large amount of mercurous high-salt wastewater is generated in domestic production of vinyl chloride by calcium carbide method production process, part factory is by using newest
Mercury content can reach 1ppb hereinafter, still mercurous high-salt wastewater will handle mercury to mercurous high-salt wastewater after treatment after technique
It just can be carried out after mass concentration < 0.003mg/L (" caustic soda PVC industry pollutant emission standard " GB15581-2016)
Outlet.In addition, the salt content of waste water is between 8-12%, wherein anion has sulfate radical, nitrate anion, bicarbonate based on sodium chloride
Root and carbonate;Cation has copper, iron, calcium, aluminium and Trace Mercury etc..Above-mentioned substance affects the sharp again of mercurous high-salt wastewater
With for example, the higher processing water of chlorinty has certain corrosiveness to equipment such as acetylene generators, and generator discharges
Slurry can also be rich in chlorine root, under the influence of the strength of cement that produces of tourist family cement plant, in addition, rich in organic matter or sulfate radical etc.
Waste water or salt be easy to cause tank voltage in film caustic soda process, electric current to rise, can block or damage valuableness when serious
Ionic membrane causes economic loss.Therefore, if organic matter and ion in mercurous high-salt wastewater cannot effectively remove, it is difficult to
The recycling for realizing processed waste water, causes the waste of water resource.In view of the utility value of water resource, vinyl chloride industry is mercurous
Advanced treating, zero-emission and the problem urgent need of recycling of high-salt wastewater solve.
The method that domestic calcium carbide process PVC manufacturing enterprise handles mercurous high-salt wastewater has reduction method, sulphide precipitation, coagulation
Method, active carbon adsorption, ion-exchange, flocculation add ultrafiltration, evaporation technique, film combined treatment technology, electrodialytic technique etc.,
Comprehensive all kinds of water treatment technologies, wherein evaporation technique is the effective technology for realizing wastewater zero discharge, but evaporation process consumes steam
Amount is big, and operating cost is high, and evaporation technique is difficult to separate the organic matter in mercurous high-salt wastewater;Using film combined treatment technology
It is also very extensive in the application of high-salinity wastewater zero-emission field, but film combined treatment technology is big in the presence of investment, operating cost is high, film
Pollute the problems such as fouling is serious, recycle-water quality is not high.Therefore, many treatment processes are using film combined treatment technology and evaporation knot
The mode of conjunction carries out, but group technology is not strong to the applicability of the mercurous high-salt wastewater of low concentration, cannot efficiently separate organic matter
And metal ion.Chinese patent CN205222913U discloses the recycling system of a kind of high-salinity wastewater zero-emission and high-purity sodium chloride
System, system include pretreatment system, film separation system and evaporation and crystallization system, pretreatment system, film separation system and evaporation knot
Crystallographic system system is sequentially arranged;Sodium chloride solution after nanofiltration system separates first is carried out being concentrated into original 6 with counter-infiltration system
~8 times, then be further concentrated into 10~15% into electrodialysis system, the fresh water reuse of electrodialysis system to counter-infiltration system is into one
Step concentration, the concentrate of electrodialysis system enter evaporation and crystallization system and are evaporated crystallization.Above system can be realized sodium chloride
Recycling and waste water zero-emission, but the system cannot be used for organic matter and metal ion in the mercurous high-salt wastewater of low concentration
Separation.
In addition, the existing technology for chlor-alkali industry mercury-containing waste water is concentrated mainly on the reduction of mercury content, to mercurous useless
The zero-emission of water and recycling are related to seldom.Chinese patent CN201410094608.5 discloses a kind of mercury-containing waste water advanced treating
Method, after mercury-containing waste water is collected, successively again through sludge condensation, separation of solid and liquid after pH adjusting, chemical settling, advanced treating
After processing, the liquid isolated is collected, and the solid pack sealing after separation is collected.It is raw that the present invention solves current carbide
Produce the problem of mercury-containing waste water poor processing effect that Corvic generates is to cause environmental pollution, mercury-containing waste water after processing
Mercury content is less than 0.5ppb, and pipe of then receiving discharge, there is no the removal for considering organic matter and the benefits again of water resource for this invention
With only focusing on the reduction of mercury content, not paying attention to the zero-emission of mercury-containing waste water, cause the waste of water resource.
As country is to the increasing of environmentally friendly attention dynamics and the development for the treatment of of mercury-containing wastewater, mercury-containing waste water handles work
Skill can satisfy the standard requirements of country, but the discharge of treated mercury-containing waste water causes the waste of water resource, additional increase
The operation cost of enterprise, therefore be badly in need of being directed to the novel technique of mercury-containing waste water advanced treating and zero-emission.At present about one
The processing system and method for mercurous high-salt wastewater, are less than mercury-containing waste water mercury content after processing in kind vinyl chloride generating process
0.003mg/L、Cl-Content is less than 800mg/L, and the system and method for realizing mercurous high-salinity wastewater zero-emission and recycling yet there are no
Report.
Summary of the invention
For mercurous high-salinity wastewater zero-emission and recycling, the purpose of this utility model is that further providing for advanced treating
Treated mercurous high-salt wastewater (mercury content < 2mg/L, Cl in vinyl chloride industry-Content < 80000mg/L), it removes in waste water
Organic matter and metal ion and chlorine root, reach mercury content less than 0.003mg/L, Cl after obtaining processing waste water-Content is less than
800mg/L realizes that mercurous high-salt wastewater returns to Vinyl Chloride Production System reuse and zero-emission, and then protects water environment, saves water
Resource provides a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride.
To realize above-mentioned purpose of utility model, a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride is provided
System:
Including mercury-containing waste water conditioning tank, dosing reactor tank, chemicals dosing plant, heavy metal chelating device, settling tank, filter press,
Cold source evaporator, condenser, reuse water pot, condensing crystallizing tank, centrifuge successively couple；Heavy metal chelating device is divided at level Four
Reason, including successively couple air-floating apparatus, two-stage filler filtering, activated carbon adsorption device；The mercury-containing waste water conditioning tank with
The import of dosing reactor tank is connected；Setting outlet in the middle part of the dosing reactor tank, and be connected with heavy metal chelating device import；
Sewage draining exit is arranged in the dosing reaction pot bottom, is connected with settling tank；Waste is arranged in the sedimentation pot bottom, with filters pressing
The import of machine is connected；The heavy metal chelating device setting supernatant outlet is connected with the import of cold source evaporator；Described
Atomization gas outlet is connected with the import of condenser at the top of cold source evaporator；The outlet of the condenser and the import of reuse water pot
It is connected；The cold source evaporator lower part is connected with the top of condensing crystallizing tank；The condensing crystallizing pot bottom waste
It is connected with the import of centrifuge.
As described above, mercury-containing waste water conditioning tank, dosing reactor tank, chemicals dosing plant, heavy metal chelating device, settling tank, pressure
Filter removes mercury and suspended matter in mercurous high-salt wastewater.
As described above, dosing reactor tank and settling tank are for reacting, separating free mercury and simple substance in mercurous high-salt wastewater
The mercury salt sediment that mercury is formed；
As described above, dosing reactor tank successively couples with heavy metal chelating device, at the removal of mercury and cold source evaporation atomization
The pretreatment of reason.
As described above, the pH value of the mercurous high-salt wastewater of operation process index of dosing reactor tank within the scope of 6-8, runs work
20--150r/min range per minute that skill index agitation revolution is adjustable guarantees that dedicated removal of mercury medicament and mercurous high-salt wastewater are sufficiently anti-
Mercury salt sediment should be formed.
As described above, heavy metal chelating device be mainly used for removing oil in mercurous high-salt wastewater, do not settle containing mercury salt
Suspended matter.
As described above, heavy metal chelating device has the function of from backwash, backwash is carried out according to inlet outlet pressure differential.
As described above, a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride remove it is mercurous and suspended matter
High-salt wastewater passes through cold source evaporator, condenser, reuse water pot, condensing crystallizing tank, centrifuge again and is handled；The reuse of collection
Water returns to production system and uses.
As described above, cold source evaporator is the evaporation for strengthening moisture using the effect of electromagnetic field and ultrasonic wave, make hydrone
It is atomized into 0.5~5 μm of size；Moisture in supernatant is evaporated, salt is concentrated.
As described above, condenser is mainly used for the condensation liquefaction of water mist, it is collected for use into reuse water pot.
As described above, condensing crystallizing tank is mainly used for the recycling storage of the salt concentration process in supernatant.
As described above, centrifuge is the device for being separated by solid-liquid separation the salt of condensing crystallizing using centrifugal force.
As described above, the method for the mercurous high-salt wastewater processing system based on a kind of carbide production vinyl chloride, including with
Lower step:
Step 1: the pH value that mercurous high-salt wastewater carries out soda acid is adjusted, and pH value is adjusted to 6-8, is transported to dosing reactor tank；
Step 2, Elemental Mercury and mercury chloride in the mercurous high-salt wastewater of dedicated removal of mercury medicament addition dosing reactor tank progress is anti-
It should settle, the supernatant for removing mercury enters the air-floating apparatus of heavy metal chelating device in the middle part of reactor tank；React the heavy of pot bottom
Object blowdown is dropped to settling tank；
Step 3, supernatant successively passes through heavy metal chelating device, cold source evaporator, and mercury content is in 0.003mg/L or less；
Step 4, sediment enters filter press by bottom blow-down after sedimentation and is separated by solid-liquid separation, and it is mercurous useless to become solid
Slag and pressing filtering liquid；Solid waste slag containing mercury is packed, and pressing filtering liquid returns to pH conditioning tank；
Step 5, supernatant enters cold source evaporator and generates atomization gas, atomization gas extracted out at the top of the evaporator by initiation machine into
Enter condenser to be condensed；Meanwhile supernatant carries out circulation steaming by circulating pump between cold source evaporator and condensing crystallizing tank
Hair atomization, the condensing crystallizing in condensing crystallizing tank；
Step 6, condensing crystallizing liquid is entered into centrifugation again when supernatant is concentrated to a certain concentration crystallization by ultrasonic atomization
Machine is separated by solid-liquid separation, and becomes mother liquor and solid salt；Solid salt carries out packing processes, and mother liquor returns to cold source evaporator and continues with；
Step 7, atomization gas enters recycle-water tank after condensation, and treated mercury content is in 0.003mg/L or less, Cl-
Content is used in 800mg/L hereinafter, returning to production system, realizes the zero-emission of mercurous high-salt wastewater.
Mercurous high-salt wastewater as described above is mercury content in 2mg/L or less, Cl-Content is below useless in 80000mg/L
Water.
The method and step of the mercurous high-salt wastewater elder generation removal of mercury as described above desalination again.
The pH value control range of waste water is between 6-8 when mercurous high-salt wastewater processing as described above.
Mercurous high-salt wastewater as described above treated mercury content is in 0.003mg/L or less, Cl-Content is in 800mg/L
Below.
Utility model has the advantages that
Chemical precipitation technique and evaporation are compared to the main distinction:
1) low cost, succinct process combination mode；
2) efficient heavy metal chelating material and device；
3) it during system and method, is resistant to pH impact and mercury content changes big hydraulic loading shock, in different operating conditions
Lower energy stable and reliable operation；
4) above system operating cost is low.
The principles of the present invention are: the removal of mercury carries out chemical reaction formation using vulcanized sodium and flocculant and mercury-containing waste water
Mercury chloride precipitating, then suspended particulate is intercepted by filtering and realizes the removal of mercury；Desalination use cold source evaporation technology, cold source evaporator be
Hydrone is carried out atomization and vaporization by the cavitation effect of the effect of high frequency travelling-magnetic-field and ultrasonic wave, and the water after atomization is carried out by condensation
Collect reuse.
Detailed description of the invention
Fig. 1 is a kind of mercurous high-salt wastewater processing system schematic diagram of carbide production vinyl chloride.
Drawing reference numeral: 1. mercury wastewater equalization ponds, 2. dosing reactor tanks, 3. chemicals dosing plants, 4. heavy metal chelating devices, 5. sink
Drop tank, 6. filter presses, 7. mercurous solid waste packagings, 8. cold source evaporators, 9. condensers, 10. condensing crystallizing tanks, 11. reuse water pots,
12. centrifuge, 13. solid salts are packed.
Specific embodiment
The waste water of mercurous high-salt wastewater treatment process processing is mainly derived from the salkali waste of VCM synthesis process alkali cleaning generation
Liquid, the mercurous spent acid of water scrubber take out the pump drainage of catalyst Water-ring vacuum, mercurous localized ground flushing water, cooler, gas holder before a small amount of machine
And rectifier unit draining.Mercury content is real using dedicated removal of mercury medicament and heavy metal chelating device between 0.02-2mg/L
It is existing.
To reach following index: mercurous high-salt wastewater cell processing water 50m3/d.The mercurous high-salt wastewater processing of VCM device
Waste water mercury content afterwards reaches the discharge standard of national regulation, i.e. waste water mercury content is lower than 0.003mg/l, even less than
0.002mg/l。
Embodiment 1: referring to Fig.1, a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride:
Mercurous high-salt wastewater is adjusted to pH value in mercury-containing waste water conditioning tank 1 within the scope of 6-8, is got to using self priming pump
Dosing reactor tank 2, open stirring 150r/min per minute by chemicals dosing plant 3 carry out quantitatively plus dedicated removal of mercury medicament (removal of mercury medicament is
Vulcanized sodium series and polyacrylamide flocculant are used in compounding according to certain sequence and proportion), it reacts 10 minutes, reduces and add
2 speed of agitator of medicine reactor tank is run to 30r/min stops stirring after ten minutes, puts to settling tank 5, is taken in settling tank 5 after five minutes
Upper supernatant enters heavy metal chelating device 4, enters cold source evaporator 8 after the filtering of heavy metal chelating device 4, carries out mist
Change evaporation.Supernatant automatically switches backwash according to inlet outlet pressure differential after the filtering of heavy metal chelating device 4, and backwash water is after filtering
Supernatant, the waste water after backwash tangentially enters in the middle part of settling tank 5 along settling tank tank skin to be settled again；5 bottom of settling tank has
Dredge pump timing delivers into filter press 6 and is separated by solid-liquid separation, and supernatant returns to mercury-containing waste water conditioning tank 1 and handles again, filters pressing
Waste slag containing mercury after 6 filters pressing of machine is packed.
Cold source evaporator 8 uses electromagnetic field and ultrasonic wave by hydrone cavitation at 1-5um water mist, and water mist is forced by air-introduced machine
To condenser top air inlet, condensed water enters reuse water pot 11, and exhaust gas is entered the steaming for accelerating waste water by cold source evaporation bottom again
Hair is conveyed according to supernatant effluent after the solid content in cold source evaporator 8 to condensing crystallizing tank 10 reaches crystallinity through pump
It is separated by solid-liquid separation into centrifuge 12, mother liquor is continued back in cold source evaporator and is evaporated, and the solid salt after centrifugation is to admittedly
Body salt packaging 13 carries out packing processes.
After a kind of carbide produces the mercurous high-salt wastewater processing system implementation of vinyl chloride, 10 samples are obtained in different moments
Secondary to be detected, result is as follows:
Detection data before and after the mercurous high-salt wastewater New Process for Treatment processing unit of table 1
As can be seen from Table 1: mercury content mass concentration is 0.2mg/L--1.8mg/L before treatment in mercurous high-salt wastewater
Between fluctuate, the average value of mercury content after 0.7767mg/L, processing average quality concentration be 0.002mg/L hereinafter, mercury content
The international standard that 0.005mg/L is fully achieved 99.8% in the removal rate of mass concentration.Cl-Content mass concentration is 60000mg/
It is fluctuated between L--80000mg/L, Cl-The average value of content is in 76810mg/L, Cl-The removal rate of content mass concentration exists
99.2%。
Embodiment as described above is only the preferable specific embodiment of the utility model, any skill for being familiar with the art
Art personnel within the technical scope disclosed by the utility model, equally replaced by technical solution according to the present utility model and its design
It changes or changes, or be used for other industry and field, should all cover within scope of protection of the claims.
Claims (5)
1. a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride, including mercury-containing waste water conditioning tank, dosing reaction
Tank, chemicals dosing plant, heavy metal chelating device, settling tank, filter press, cold source evaporator, condenser, reuse water pot, condensing crystallizing
Tank, centrifuge successively couple；It is characterized in that, heavy metal chelating device is divided into level Four processing, including the air bearing dress successively coupled
It sets, the filtering of two-stage filler, activated carbon adsorption device；The mercury-containing waste water conditioning tank is connected with the import of dosing reactor tank；Institute
Setting outlet in the middle part of the dosing reactor tank stated, and be connected with heavy metal chelating device import；The dosing reaction pot bottom setting
Sewage draining exit is connected with settling tank；Waste is arranged in the sedimentation pot bottom, is connected with the import of filter press；The weight
Metal capture device setting supernatant outlet is connected with the import of cold source evaporator；Atomization gas goes out at the top of the cold source evaporator
Mouth is connected with the import of condenser；The outlet of the condenser is connected with the import of reuse water pot；The cold source evaporator
Lower part is connected with the top of condensing crystallizing tank；The condensing crystallizing pot bottom waste is connected with the import of centrifuge.
2. a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride according to claim 1, feature exist
In the dosing reactor tank successively couples with heavy metal chelating device, for the removal of mercury and the pre- place of cold source evaporation atomization process
Reason.
3. a kind of according to claim 1, the mercurous high-salt wastewater processing system of 2 any carbide production vinyl chloride,
It is characterized in that, heavy metal chelating device has the function of from backwash, carries out backwash according to inlet outlet pressure differential.
4. a kind of according to claim 1, the mercurous high-salt wastewater processing system of 2 any carbide production vinyl chloride,
It is characterized in that, cold source evaporator is the evaporation for strengthening moisture using the effect of electromagnetic field and ultrasonic wave.
5. a kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride according to claim 1, feature exist
In centrifuge is the device for being separated by solid-liquid separation the salt of condensing crystallizing using centrifugal force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482416.5U CN208250091U (en) | 2018-04-08 | 2018-04-08 | A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482416.5U CN208250091U (en) | 2018-04-08 | 2018-04-08 | A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208250091U true CN208250091U (en) | 2018-12-18 |
Family
ID=64639846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820482416.5U Withdrawn - After Issue CN208250091U (en) | 2018-04-08 | 2018-04-08 | A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208250091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218096A (en) * | 2018-04-08 | 2018-06-29 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | A kind of mercurous high-salt wastewater processing system and method for carbide production vinyl chloride |
-
2018
- 2018-04-08 CN CN201820482416.5U patent/CN208250091U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218096A (en) * | 2018-04-08 | 2018-06-29 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | A kind of mercurous high-salt wastewater processing system and method for carbide production vinyl chloride |
| CN108218096B (en) * | 2018-04-08 | 2024-01-12 | 新疆至臻化工工程研究中心有限公司 | System and method for treating mercury-containing high-salt wastewater from chloroethylene production by calcium carbide method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103449653B (en) | Combined treatment method for sodium chloride-containing wastewater generated in dressing and smelting of rare earth | |
| CN102372377B (en) | Method for advanced treatment of mercury-containing wastewater | |
| CN103979729A (en) | Desulfurization waste water recycling and zero discharge system and method | |
| CN108218096A (en) | A kind of mercurous high-salt wastewater processing system and method for carbide production vinyl chloride | |
| CN205740622U (en) | A kind of percolate coagulating sedimentation, evaporation joint processing system | |
| CN110759571B (en) | Fly ash leachate treatment system and treatment method | |
| CN203878018U (en) | Desulfurization wastewater recycling and zero-discharge system | |
| CN106517605A (en) | Zero discharge technology and apparatus of desulphurization wastewater | |
| CN105084630A (en) | Oil refining catalyst wastewater zero-discharging treatment method | |
| CN102030441A (en) | Method for treating wastewater in production of sebacic acid | |
| CN107840511A (en) | Coal chemical industry method for treating strong brine and system | |
| CN111718048A (en) | Wet desulphurization waste water and salt separation zero-emission system and salt separation zero-emission method | |
| CN107352727A (en) | A kind of coal chemical industrial waste water goes out salt Zero discharging system and its implementation | |
| CN103787542B (en) | The wastewater recovery processing technique that a kind of Preparation of Sebacic Acid From Castor Oil produces and device | |
| CN106082516A (en) | A kind of point of salt-pepper noise technique and device | |
| CN208250091U (en) | A kind of mercurous high-salt wastewater processing system of carbide production vinyl chloride | |
| CN113955892A (en) | Concentrated salt wastewater evaporation crystallization mother liquor treatment method and system | |
| CN113401923A (en) | Method and system for performing cooperative treatment on hazardous waste incineration wet deacidification and fly ash washing | |
| CN107055886B (en) | A kind of depth graded divides salt technique | |
| CN108911343A (en) | Polysilicon zero emission method of wastewater and system | |
| CN204939142U (en) | A kind for the treatment of facility of desulfurization wastewater of flue gas desulphurization system discharge | |
| CN101503257B (en) | Method and apparatus for recovering and treating ammonium nitrate condensate liquid wastewater | |
| CN206156979U (en) | High processing apparatus who contains salt difficult degradation saccharin industrial waste water waste gas | |
| CN207108721U (en) | Mercury-containing waste water advanced treating zero-emission system | |
| CN206915894U (en) | A kind of zero-emission equipment of high slat-containing wastewater processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181218 Effective date of abandoning: 20240112 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181218 Effective date of abandoning: 20240112 |