CN106517588A - Efficient treatment method for wastewater of graphene production process - Google Patents
Efficient treatment method for wastewater of graphene production process Download PDFInfo
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- CN106517588A CN106517588A CN201611090718.XA CN201611090718A CN106517588A CN 106517588 A CN106517588 A CN 106517588A CN 201611090718 A CN201611090718 A CN 201611090718A CN 106517588 A CN106517588 A CN 106517588A
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- sedimentation separator
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- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 28
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 27
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 17
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000004064 recycling Methods 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 13
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 11
- 239000011572 manganese Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000010865 sewage Substances 0.000 claims abstract description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000011667 zinc carbonate Substances 0.000 claims abstract description 8
- 235000004416 zinc carbonate Nutrition 0.000 claims abstract description 8
- 229910000010 zinc carbonate Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 238000004062 sedimentation Methods 0.000 claims description 41
- 150000002696 manganese Chemical class 0.000 claims description 23
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 18
- 238000005189 flocculation Methods 0.000 claims description 18
- 230000016615 flocculation Effects 0.000 claims description 18
- 239000010802 sludge Substances 0.000 claims description 18
- 230000008719 thickening Effects 0.000 claims description 18
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 15
- 239000002244 precipitate Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 12
- 150000003751 zinc Chemical class 0.000 claims description 12
- 238000003672 processing method Methods 0.000 claims description 11
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 10
- 229910021536 Zeolite Inorganic materials 0.000 claims description 8
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 8
- 239000010457 zeolite Substances 0.000 claims description 8
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 6
- 230000015271 coagulation Effects 0.000 claims description 6
- 238000005345 coagulation Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000010440 gypsum Substances 0.000 claims description 6
- 229910052602 gypsum Inorganic materials 0.000 claims description 6
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000002910 solid waste Substances 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract description 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 abstract 1
- 229910000367 silver sulfate Inorganic materials 0.000 abstract 1
- 238000009270 solid waste treatment Methods 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 6
- 235000017550 sodium carbonate Nutrition 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000006228 supernatant Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 238000004457 water analysis Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical class S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000004912 1,5-cyclooctadiene Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 230000003851 biochemical process Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 108090000913 Nitrate Reductases Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- -1 manganese, manganese salt Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000000725 suspension Substances 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
- C02F1/64—Heavy metal compounds of iron or manganese
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
- Catalysts (AREA)
Abstract
The invention discloses an efficient treatment method for wastewater of a graphene production process and belongs to the technical field of treatment of wastewater of industrial production. The efficient treatment method comprises the following steps: removing nitrate and total nitrogen, recycling zinc, recycling manganese and removing sulfate, wherein the treated wastewater of the graphene production process reaches standards and can be discharged into a municipal sewage treatment plant. The efficient treatment method has the characteristics that the pH (Potential of Hydrogen) value of the wastewater of the graphene production process does not need to be adjusted, and the nitrate and nitrite in water can be directly reduced into nitrogen gas through a synergistic effect of zinc and aluminum, and the nitrogen gas can be directly discharging into the air; zinc carbonate is generated through a sodium carbonate reaction and can be recycled through a solid waste treatment unit; the manganese and silver sulfate are separated and recycled through controlling a pH value range, and mutual interference of all ions is not caused; the method has the advantages that the removal is relatively complete, the process flow is simple, and the water quality of output water is good; needed equipment investment is less, and a small area is occupied; solid wastes can be completely recycled, so that energy saving and environment friendliness are facilitated; and the efficient treatment method has relatively high economic and social benefits.
Description
Technical field
The invention belongs to industrial production wastewater processing technology field, and in particular to a kind of Graphene production waste water high-efficiency is processed
Method.
Background technology
The waste water such as pickling are produced in the production process of Graphene, in waste water, contains acid, salt, COD, suspension and phosphorus, wherein
Predominant amount is nitrate and sulfate and manganese salt, and wherein COD is 500-600mg/L, and sulfate is 2500-4100mg/L, nitre
Hydrochlorate is 1000-1900mg/L, and manganese salt is 405-520mg/L, and pH value 1-2 is strong acid haline water, so can not use at biochemical process
Reason.At present, common process is acid-base neutralization, reprecipitation process.The technique can not remove nitrate, so total nitrogen index is very high,
Municipal sewage plant adapter standard can not be met.The minimizing technology of nitrate have ferrous salt and aluminium powder by the nitrate reduction in water into
Ammonia, but ammonia can not be directly discharged into air, so, in addition it is also necessary to the absorption plant of ammonia is invested, needs to adjust pH value to 10.Work as nitric acid
When salinity is high, the surface of aluminium can generate oxide-film and prevent reaction from occurring.Also reverse osmosis process, electrodialysis, ion-exchange,
But all there is concentrated water process problem.
So the main difficulty of Graphene wastewater treatment is：One, nitrate are very high, processing cost and cost of investment compared with
It is high；Two, sulfate is very high, and processing cost and cost of investment are higher；It is three, because salt content is high, acid relatively strong, so can not
Processed with biochemical process.
The content of the invention
It is an object of the invention to provide a kind of Graphene production wastewater treatment is thorough, effluent quality is good, flow process is short, equipment is thrown
Money less, solid waste recoverable, the Graphene production wastewater treatment method for being conducive to energy-conserving and environment-protective.
A kind of Graphene of the present invention produces waste water high-efficiency processing method, comprises the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality,
Water outlet is boosted to be pumped into except nitre tower, and in tower adds sulfamic acid, except placement zinc powder filler and zeolite in nitre tower, and mixes
Al catalysts, regulation pH be 1-2, reacted water outlet enter zinc salt recovery pond；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate reaction, pH to be adjusted to 6.5-7.5 or so, enter
Enter High-rate sedimentation separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, thickening
Afterwards, rotary kiln heating is sent into, then Jing heat exchangers again, cloth bag separator is entered after cooling, zinc oxide finished product is collected, is reclaimed and is used
Produce in zinc oxide, the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In manganese salt High-rate sedimentation separator, in coagulation area addition PAC, 30% NaOH,
PH is adjusted to into 8-9, subsequently into flocculation zone, PAM is added, the water outlet Jing after flocculation flows into settling zone, and manganese salt precipitate and separate is gone out
Come, Jing sludge pumps send into plate and frame filter press, after thickening, reclaim and produce for manganese, the water outlet of manganese salt High-rate sedimentation separator
Into sulfate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime is added in sulfate High-rate sedimentation separator, pH value is adjusted to into 10.4-
11, and PAC and PAM is added, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press, after thickening, gypsum outward transport
Process, supernatant enters discharge bay, up to standard to enter municipal sewage plant.
It is 200-300 mesh except zinc powder filler is placed in nitre tower, filling rate 5%-10%；Zeolite be 15-20 mesh, filling rate
1%-5%.
Step 1) in Al catalysts amount for zinc powder amount of filler 1 ‰ -1.8 ‰.
Step 2) in rotary furnace temperature be 290-300 DEG C.
Compared with prior art, the beneficial effects of the present invention is：
Graphene production waste water need not adjust pH value, can directly pass through the synergy of zinc and aluminium, by the nitric acid in water
Salt and nitrate reductase are nitrogen, can be directly discharged in air；Reacted by soda ash, produce zinc carbonate, by fixed-end forces
Unit can be recycled；By control ph scope, manganese and sulfate radical are separated and recovered, do not result in the mutually dry of each ion
Disturb；The method is removed more thoroughly, and technological process is brief, and effluent quality is good, and equipment needed thereby small investment, is taken up an area and is saved, and solid waste can be complete
Portion recycles, and is conducive to energy-conserving and environment-protective, with higher economic benefit and social benefit.
Specific embodiment
Embodiment 1
A kind of Graphene of the present invention produces waste water high-efficiency processing method, comprises the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality,
Water outlet is boosted to be pumped into except nitre tower, and sulfamic acid 2000mg/L is added in tower, except placement zinc powder filler and boiling in nitre tower
Stone, places zinc powder filler for 200 mesh, filling rate 5%；Zeolite is 15 mesh, filling rate 1%, and mix Al catalysts, Al catalysts
Amount be the 1 ‰ of zinc powder amount of filler, it is 1.5 to adjust pH, and NO3-N and NO2-N when pH value is 1.5 and in water occurs oxygen
Change reduction reaction, the reaction time is 1h, the nitrate in water is nitrite by zinc powder reduction, and nitrite Jing sulfamic acids are also
Originally it was that nitrogen can be directly discharged in air, reacted water outlet enters the recovery pond of zinc salt；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate 1060mg/L reactions, pH to be adjusted to 6.5, enter
Enter High-rate sedimentation separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, thickening
Afterwards, send into rotary kiln and be heated to 290 DEG C, then Jing heat exchangers again, after cooling, enter cloth bag separator, collect zinc oxide into
Product, reclaim and produce for zinc oxide, and the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In the manganese salt High-rate sedimentation separator, coagulation area add 10mg/L PAC, 30%
PH is adjusted to 8.3 by NaOH 1mg/L, subsequently into flocculation zone, adds the PAM of 0.5mg/L, and the water outlet Jing after flocculation is flowed into
Settling zone, by manganese salt precipitate and separate out, Jing sludge pumps send into plate and frame filter press, after thickening, reclaim and produce for manganese, manganese
The water outlet of salt High-rate sedimentation separator enters sulfate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime 253mg/L is added in sulfate High-rate sedimentation separator, pH value is adjusted to
10.5, and the PAM of the PAC and 0.7mg/L of 15mg/L is added, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press,
After thickening, gypsum outward transport is processed, and supernatant enters discharge bay, up to standard to enter municipal sewage plant.
The water analysis data in 1 different disposal stage of the present embodiment are as shown in table 1.
The water quality data in 1 different disposal stage of table
Embodiment 2
A kind of Graphene of the present invention produces waste water high-efficiency processing method, comprises the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality,
Water outlet is boosted to be pumped into except nitre tower, and sulfamic acid 4000mg/L is added in tower, except placement zinc powder filler and boiling in nitre tower
Stone, places zinc powder filler for 300 mesh, filling rate 10%；Zeolite is 20 mesh, filling rate 5%, and mix Al catalysts, aluminium catalysis
The amount of agent for zinc powder amount of filler 1.2 ‰, it is 1.0 to adjust pH, and the NO3-N and NO2-N when pH value is 1 and in water is sent out
Raw redox reaction, the reaction time is 1h, and the nitrate in water is nitrite by zinc powder reduction, nitrite Jing amino sulphurs
Acid is reduced to nitrogen and can be directly discharged in air, and reacted water outlet enters the recovery pond of zinc salt；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate 1410mg/L reactions, pH to be adjusted to 7.5, enter
Enter High-rate sedimentation separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, thickening
Afterwards, send into rotary kiln and be heated to 300 DEG C, then Jing heat exchangers again, after cooling, enter cloth bag separator, collect zinc oxide into
Product, reclaim and produce for zinc oxide, and the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In the manganese salt High-rate sedimentation separator, coagulation area add 15mg/L PAC, 30%
PH is adjusted to 9 by NaOH 1.8mg/L, subsequently into flocculation zone, adds the PAM of 0.5mg/L, and the water outlet Jing after flocculation is flowed into
Settling zone, by manganese salt precipitate and separate out, Jing sludge pumps send into plate and frame filter press, after thickening, reclaim and produce for manganese, manganese
The water outlet of salt High-rate sedimentation separator enters sulfate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime 740mg/L is added in sulfate High-rate sedimentation separator, pH value is adjusted to
11.0, and the PAM of the PAC and 0.9mg/L of 20mg/L is added, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press,
After thickening, gypsum outward transport is processed, and supernatant enters discharge bay, up to standard to enter municipal sewage plant.
The water analysis data in 2 different disposal stage of the present embodiment are as shown in table 2.
The water quality data in 2 different disposal stage of table
Embodiment 3
A kind of Graphene of the present invention produces waste water high-efficiency processing method, comprises the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality,
Water outlet is boosted to be pumped into except nitre tower, and sulfamic acid 3000mg/L is added in tower, except placement zinc powder filler and boiling in nitre tower
Stone, places zinc powder filler for 250 mesh, filling rate 7%；Zeolite is 18 mesh, filling rate 3%, and mix Al catalysts, Al catalysts
Amount be the 1.2 ‰ of zinc powder amount of filler, it is 1.0 to adjust pH, and NO3-N and NO2-N when pH value is 1.0 and in water occurs
Redox reaction, reaction time are 1h, the nitrate in water by zinc powder reduction be nitrite, nitrite Jing sulfamic acids
It is reduced to nitrogen to be directly discharged in air, reacted water outlet enters the recovery pond of zinc salt；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate 1200mg/L reactions, pH to be adjusted to 7.0, enter
Enter High-rate sedimentation separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, thickening
Afterwards, send into rotary kiln and be heated to 295 DEG C, then Jing heat exchangers again, after cooling, enter cloth bag separator, collect zinc oxide into
Product, reclaim and produce for zinc oxide, and the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In the manganese salt High-rate sedimentation separator, coagulation area add 20mg/L PAC, 30%
PH is adjusted to 8.9 by NaOH 1.5mg/L, subsequently into flocculation zone, adds the PAM of 1.0mg/L, Jing after flocculation goes out current
Enter settling zone, by manganese salt precipitate and separate out, Jing sludge pumps send into plate and frame filter press, after thickening, reclaim and produce for manganese,
The water outlet of manganese salt High-rate sedimentation separator enters sulfate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime 610mg/L is added in sulfate High-rate sedimentation separator, pH value is adjusted to
10.9, and the PAM of the PAC and 1.0mg/L of 16mg/L is added, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press,
After thickening, gypsum outward transport is processed, and supernatant enters discharge bay, up to standard to enter municipal sewage plant.
The water analysis data in 3 different disposal stage of the present embodiment are as shown in table 3.
The water quality data in 3 different disposal stage of table
Embodiment 4
A kind of Graphene of the present invention produces waste water high-efficiency processing method, comprises the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality,
Water outlet is boosted to be pumped into except nitre tower, and sulfamic acid 3200mg/L is added in tower, except placement zinc powder filler and boiling in nitre tower
Stone, places zinc powder filler for 300 mesh, filling rate 8%；Zeolite is 20 mesh, filling rate 2%, and mix Al catalysts, Al catalysts
Amount be the 1.1 ‰ of zinc powder amount of filler, it is 1.8 to adjust pH, and NO3-N and NO2-N when pH value is 1.8 and in water occurs
Redox reaction, reaction time are 1h, the nitrate in water by zinc powder reduction be nitrite, nitrite Jing sulfamic acids
It is reduced to nitrogen to be directly discharged in air, reacted water outlet enters the recovery pond of zinc salt；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate 1100mg/L reactions, pH to be adjusted to 7.2, enter
Enter High-rate sedimentation separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, thickening
Afterwards, send into rotary kiln and be heated to 300 DEG C, then Jing heat exchangers again, after cooling, enter cloth bag separator, collect zinc oxide into
Product, reclaim and produce for zinc oxide, and the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In the manganese salt High-rate sedimentation separator, coagulation area add 15mg/L PAC, 30%
PH is adjusted to 8 by NaOH 1mg/L, subsequently into flocculation zone, adds the PAM of 1.0mg/L, and the water outlet Jing after flocculation flows into heavy
Shallow lake area, by manganese salt precipitate and separate out, Jing sludge pumps send into plate and frame filter press, after thickening, reclaim and produce for manganese, manganese salt
The water outlet of High-rate sedimentation separator enters sulfate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime 220mg/L is added in sulfate High-rate sedimentation separator, pH value is adjusted to
10.4, and the PAM of the PAC and 1.0mg/L of 15mg/L is added, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press,
After thickening, gypsum outward transport is processed, and supernatant enters discharge bay, up to standard to enter municipal sewage plant.
The water analysis data in 4 different disposal stage of the present embodiment are as shown in table 4.
The water quality data in 4 different disposal stage of table
Protection scope of the present invention is not limited solely to above-described embodiment, as long as technique produces waste water with Graphene of the present invention
Processing method, technique are identical, just fall in the scope of protection of the invention.
Claims (4)
1. a kind of Graphene produces waste water high-efficiency processing method, it is characterised in that：Comprise the following steps：
1) removal of nitrate and total nitrogen：Waste water enters regulating reservoir, by air compressor machine air stirring, homogeneous water quantity and quality, water outlet
It is boosted to be pumped into except nitre tower, and sulfamic acid is added in tower, except placement zinc powder filler and zeolite in nitre tower, and aluminum mixture are urged
Agent, regulation pH be 1-2, reacted water outlet enter zinc salt recovery pond；
2) recycling of zinc：To in the recovery pond of zinc salt, add sodium carbonate reaction, pH to be adjusted to 6.5-7.5, enter efficiently heavy
Shallow lake separator, by the zinc carbonate precipitate and separate of reaction out, Jing sludge pumps are promoted to plate and frame filter press, after thickening, send into
Rotary kiln is heated, then Jing heat exchangers again, enters cloth bag separator, collect zinc oxide finished product, reclaim for aoxidizing after cooling
Zinc is produced, and the water outlet of High-rate sedimentation separator enters manganese salt High-rate sedimentation separator；
3) recycling of manganese：In manganese salt High-rate sedimentation separator, in coagulation area addition PAC, 30% NaOH, by pH
8-9 is adjusted to, subsequently into flocculation zone, PAM is added, the water outlet Jing after flocculation flows into settling zone, by manganese salt precipitate and separate out, Jing
Sludge pump sends into plate and frame filter press, after thickening, reclaims and produces for manganese, and the water outlet of manganese salt High-rate sedimentation separator enters sulphur
Hydrochlorate High-rate sedimentation separator；
4) removal of sulfate：Milk of lime is added in sulfate High-rate sedimentation separator, pH value is adjusted to into 10-11, and is added
Enter PAC and PAM, sulfate flocculation is settled out, Jing sludge pumps send into plate and frame filter press, after thickening, gypsum outward transport is processed, on
Clear liquid enters discharge bay, up to standard to enter municipal sewage plant.
2. a kind of Graphene according to claim 1 produces waste water high-efficiency processing method, it is characterised in that：Except putting in nitre tower
Zinc powder filler is put for 200-300 mesh, filling rate 5%-10%；Zeolite be 15-20 mesh, filling rate 1%-5%.
3. a kind of Graphene according to claim 1 produces waste water high-efficiency processing method, it is characterised in that：Step 1) in aluminium
The amount of catalyst for zinc powder amount of filler 1 ‰ -1.8 ‰.
4. a kind of Graphene according to claim 1 produces waste water high-efficiency processing method, it is characterised in that：Step 2) in return
The temperature of converter is 290-300 DEG C.
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| CN110002649A (en) * | 2019-04-11 | 2019-07-12 | 南京鹳山化工科技有限公司 | A kind of method that graphene waste acid resource utilizes |
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Effective date of registration: 20240417 Address after: 321000, 3rd floor, Building 1, southeast of the intersection of Sunshine Avenue and Huancheng North Road, Suxi Town, Yiwu City, Jinhua City, Zhejiang Province (self declared) Patentee after: Zhejiang Fengchuang Future New Materials Co.,Ltd. Country or region after: China Address before: 272000 Zone C, the seventh Industrial Park, high tech Zone, Jining City, Shandong Province Patentee before: JINGHUA ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Country or region before: China |