CN113443753A - Treatment process of high-sulfur wastewater in metallurgical industry - Google Patents
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- 239000011593 sulfur Substances 0.000 title claims abstract description 54
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 54
- 239000002351 wastewater Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 38
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 17
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 11
- 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 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 10
- 239000011734 sodium Substances 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 238000005374 membrane filtration Methods 0.000 claims abstract description 8
- 239000012452 mother liquor Substances 0.000 claims abstract description 8
- 230000007935 neutral effect Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000035484 reaction time Effects 0.000 claims abstract description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 8
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 8
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims description 6
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- RYTYSMSQNNBZDP-UHFFFAOYSA-N cobalt copper Chemical compound [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 claims description 3
- MIAJZAAHRXPODB-UHFFFAOYSA-N cobalt potassium Chemical compound [K].[Co] MIAJZAAHRXPODB-UHFFFAOYSA-N 0.000 claims description 3
- IYPQZXRHDNGZEB-UHFFFAOYSA-N cobalt sodium Chemical group [Na].[Co] IYPQZXRHDNGZEB-UHFFFAOYSA-N 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 30
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 230000036632 reaction speed Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 239000003513 alkali Substances 0.000 description 8
- 230000001590 oxidative effect Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical group CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/28—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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a treatment process of high-sulfur wastewater in metallurgical industry, which comprises the following steps: introducing the high-sulfur wastewater into an adjusting tank, adding water for dilution, and enabling the concentration of sulfur after dilution to be 0.01g/l to 0.1 g/l; adding a catalyst cobalt phthalocyanine sulfonate into an adjusting tank, and uniformly stirring; heating the adjusting tank to 35-45 ℃, introducing air into the reaction kettle, fully reacting, and filtering to obtain a blue transparent solution and sulfur; adding activated carbon into the blue transparent solution for decoloring to obtain a colorless transparent solution; and adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system. The invention has the advantages that: the treatment process has the advantages of simple operation, high reaction speed and short reaction time.
Description
Technical Field
The invention relates to the technical field of wastewater treatment in the metallurgical industry, in particular to a treatment process of high-sulfur wastewater in the metallurgical industry.
Background
The metallurgical industry commonly adopts a sodium-alkali method to carry out desulfurization treatment on sulfide ores and anode mud. The alkali liquor can react with the elemental sulfur to generate sodium sulfide and sodium polysulfide which are easily dissolved in water, so that the aim of improving metal enrichment is fulfilled, but a large amount of high-sulfur wastewater (the sulfur content in the wastewater is more than 0.2g/L) which is seriously polluted and extremely difficult to treat is generated, the high-sulfur wastewater is alkaline, and if the high-sulfur wastewater is directly discharged without being treated, the environment is seriously polluted.
At present, the industrial treatment method of the high-sulfur wastewater mainly comprises a neutralization method, an air oxidation method, a chemical oxidation method and the like. The neutralization method is that the pH value of the waste alkali liquor is adjusted to be neutral by using an acidic substance, so that hydrogen sulfide and sulfur are released from sodium polysulfide, sodium sulfide and sodium thiosulfate; the neutralization method has simple process, but the generated hydrogen sulfide can corrode equipment, and the hydrogen sulfide generates sulfur dioxide after combustion, which also pollutes the atmosphere. The air oxidation method mainly makes use of the oxidation capacity of oxygen in the air to oxidize the desulfurized waste alkali liquor into salt; the method has the defects of low oxidation efficiency, incomplete oxidation, long oxidation time and the like. The chemical oxidation method is a method for oxidizing sulfide in wastewater to sulfur oxide with higher valence state by utilizing the oxidability of oxidant, the oxidant mainly adopted in the prior art is sodium chlorate, potassium permanganate, hydrogen peroxide and the like, and because the desulfurization waste lye generally has strong alkalinity, the oxidability of the oxidant can be weakened, the oxidation efficiency is reduced, the usage amount of the oxidant is increased, and the production cost is increased. Therefore, further improvements are needed in the existing treatment methods.
Disclosure of Invention
The invention aims to make up the defects and discloses a treatment process of high-sulfur wastewater in the metallurgical industry to the society, which has the advantages of simple operation, high reaction speed and short reaction time.
The technical scheme of the invention is realized as follows:
a treatment process of high-sulfur wastewater in metallurgical industry comprises the following steps:
introducing high-sulfur wastewater into an adjusting tank, and adding water to dilute the wastewater so that the concentration of the diluted sulfur is 0.01g/l to 0.1 g/l;
adding a catalyst cobalt phthalocyanine sulfonate into an adjusting tank, and uniformly stirring;
step three, heating the adjusting tank to 35-45 ℃, introducing air into the reaction kettle, fully reacting, and filtering to obtain blue transparent solution and sulfur;
step four, adding activated carbon into the blue transparent solution for decoloring to obtain a colorless transparent solution;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
The measures for further optimizing the technical scheme are as follows:
as an improvement, the concentration of the catalyst cobalt phthalocyanine sulfonate is 0.05 g/l to 0.3 g/l.
As an improvement, in the third step, the air flow is 0.5 m3Min to 1.0 m3/min。
As an improvement, in the fourth step, the dosage of the active carbon is 2 kg/m3To 4 kg/m3。
In the fourth step, the decoloring temperature is 60-90 ℃, and the decoloring time is 20-60 min.
As an improvement, the high-sulfur wastewater contains one or more of sodium sulfide, sodium polysulfide, hydrogen sulfide and sodium sulfite.
As an improvement, in the third step, the aeration reaction time is 60min to 120 min.
As an improvement, the cobalt phthalocyanine sulfonate is sodium cobalt phthalocyanine sulfonate, potassium cobalt phthalocyanine sulfonate or copper cobalt phthalocyanine sulfonate.
Compared with the prior art, the invention has the advantages that:
aiming at the characteristic of high content of reducing sulfides such as sodium polysulfide, sodium sulfide and the like in high-sulfur wastewater in the metallurgical industry, the high-sulfur wastewater is firstly diluted to create conditions for using a catalyst cobalt phthalocyanine sulfonate (PDS), and the low-concentration sulfur-containing wastewater can be quickly oxidized by using the catalyst cobalt phthalocyanine sulfonate, so that the reaction rate is improved, and the reaction time is shortened.
The method fully utilizes the alkali in the high-sulfur wastewater, does not need an additional alkali source, and reduces the operation cost; in addition, the process has mild reaction conditions, simple operation, no generation of malodorous hydrogen sulfide gas and easy industrialization.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in figure 1, the treatment process of the high-sulfur wastewater in the metallurgical industry comprises the following steps:
introducing high-sulfur wastewater into an adjusting tank, and adding water to dilute the wastewater so that the concentration of the diluted sulfur is 0.01g/l to 0.1 g/l;
adding a catalyst cobalt phthalocyanine sulfonate into an adjusting tank, and uniformly stirring; the concentration of the added catalyst phthalocyanine cobalt sulfonate is 0.05 g/l to 0.3 g/l;
step three, heating the adjusting tank to 35-45 ℃, introducing air into the reaction kettle, fully reacting for 60-120 min, and filtering to obtain blue transparent solution and sulfur; air flow rate of 0.5 m3Min to 1.0 m3/min；
Step four, adding activated carbon into the blue transparent solution for decoloring to obtain a colorless transparent solution; the dosage of the active carbon is 2 kg/m3To 4 kg/m3The decoloring temperature is 60 ℃ to 90 ℃, and the decoloring time is 20min to 60 min;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
The high-sulfur wastewater contains one or more of sodium sulfide, sodium polysulfide, hydrogen sulfide and sodium sulfite; the adopted cobalt phthalocyanine sulfonate can be sodium cobalt phthalocyanine sulfonate, potassium cobalt phthalocyanine sulfonate or copper cobalt phthalocyanine sulfonate.
After the sodium membrane filtration system filters, the concentrated mother liquor mainly contains sodium sulfate and sodium thiosulfate, and is extracted and recovered by a common concentrated salt extraction system in wastewater treatment, so that the aim of resource recovery is further fulfilled.
The following is further illustrated by specific examples:
example 1
A treatment process of high-sulfur wastewater in metallurgical industry comprises the following steps:
step one, adding 50 liters of high-sulfur wastewater into an adjusting tank, adding 2500 liters of water for dilution, and uniformly stirring;
step two, adding 130g of sodium phthalocyanine cobalt sulfonate into an adjusting tank, and uniformly stirring;
step three, heating the regulating tank to 38 ℃ by using steam, blowing air from the bottom of the regulating tank by using an air compressor, wherein the air flow is 0.5 m3Reacting for 60 min; filtering with a plate-and-frame filter press to obtain solid sulfur and a blue transparent solution;
step four, adding the blue transparent solution into a decoloring tank, adding 4kg of activated carbon, heating to 65 ℃, stirring for 60min, and filtering to obtain a colorless transparent solution;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
Example 2
A treatment process of high-sulfur wastewater in metallurgical industry comprises the following steps:
adding 50 liters of high-sulfur wastewater into an adjusting tank, adding 3000 liters of water for dilution, and uniformly stirring;
step two, adding 160g of potassium phthalocyanine cobalt sulfonate into an adjusting tank, and uniformly stirring;
step three, heating the regulating tank to 40 ℃ by using steam, blowing air from the bottom of the regulating tank by using an air compressor, wherein the air flow is 0.7 m3Reacting for 90 min; filtering with a plate-and-frame filter press to obtain solid sulfur and a blue transparent solution;
step four, adding the blue transparent solution into a decoloring tank, adding 4.5kg of activated carbon, heating to 75 ℃, stirring for 70min, and filtering to obtain a colorless transparent solution;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
Example 3
A treatment process of high-sulfur wastewater in metallurgical industry comprises the following steps:
step one, adding 50 liters of high-sulfur wastewater into an adjusting tank, adding 4000 liters of water for dilution, and uniformly stirring;
step two, adding 1000g of copper phthalocyanine cobalt sulfonate into an adjusting tank, and uniformly stirring;
step three, heating the regulating tank to 45 ℃ by using steam, blowing air from the bottom of the regulating tank by using an air compressor, wherein the air flow is 1.0 m3Reaction for 120 min; filtering with a plate-and-frame filter press to obtain solid sulfur and a blue transparent solution;
step four, adding the blue transparent solution into a decoloring tank, adding 5kg of activated carbon, heating to 85 ℃, stirring for 90min, and filtering to obtain a colorless transparent solution;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
The invention relates to a treatment process of high-sulfur wastewater in metallurgical industry, which is characterized in that the high-sulfur wastewater is firstly diluted to 0.01-0.1 g/l of sulfur concentration, so as to create conditions for the use of a catalyst cobalt phthalocyanine sulfonate (PDS), fully utilize alkali in the high-sulfur wastewater, and reduce the operation cost without adding an alkali source (PDS needs to act under an alkaline condition); the catalyst cobalt phthalocyanine sulfonate can be used for quickly oxidizing the low-concentration sulfur-containing wastewater, so that the reaction rate is improved, and the reaction time is shortened. In addition, the process has mild reaction conditions, is simple to operate, does not generate odorous hydrogen sulfide gas, and is easy to industrialize; the treated wastewater can reach the discharge standard after being decolored and filtered by a sodium membrane, and the environmental pollution can be greatly reduced.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the present invention.
Claims (8)
1. A treatment process of high-sulfur wastewater in metallurgical industry is characterized by comprising the following steps: the method comprises the following steps:
introducing high-sulfur wastewater into an adjusting tank, and adding water to dilute the wastewater so that the concentration of the diluted sulfur is 0.01g/l to 0.1 g/l;
adding a catalyst cobalt phthalocyanine sulfonate into an adjusting tank, and uniformly stirring;
step three, heating the adjusting tank to 35-45 ℃, introducing air into the reaction kettle, fully reacting, and filtering to obtain blue transparent solution and sulfur;
step four, adding activated carbon into the blue transparent solution for decoloring to obtain a colorless transparent solution;
and step five, adjusting the colorless transparent solution to be neutral, sending the solution into a sodium membrane filtration system, discharging the effluent after reaching the standard, and sending the concentrated mother liquor into a concentration salt extraction system.
2. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: the concentration of the catalyst phthalocyanine cobalt sulfonate is 0.05 g/l to 0.3 g/l.
3. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: in the third step, the air flow is 0.5 m3Min to 1.0 m3/min。
4. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: in the fourth step, the dosage of the active carbon is 2 kg/m3To 4 kg/m3。
5. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: in the fourth step, the decoloring temperature is 60-90 ℃, and the decoloring time is 20-60 min.
6. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: the high-sulfur wastewater contains one or more of sodium sulfide, sodium polysulfide, hydrogen sulfide and sodium sulfite.
7. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: in the third step, the aeration reaction time is 60min to 120 min.
8. The process for treating high-sulfur wastewater in metallurgical industry according to claim 1, which comprises the following steps: the cobalt phthalocyanine sulfonate is sodium cobalt phthalocyanine sulfonate, potassium cobalt phthalocyanine sulfonate or copper cobalt phthalocyanine sulfonate.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403459A (en) * | 2001-08-24 | 2003-03-19 | 中国石油天然气股份有限公司 | Prepn of oxidizing and desulfurizing catalyst phthalocyanine cobalt sulfonate |
| CN101143746A (en) * | 2006-09-13 | 2008-03-19 | 中国石油天然气股份有限公司 | Method for processing sulfur-containing waste lye |
| CN102992469A (en) * | 2012-12-07 | 2013-03-27 | 山东汇海医药化工有限公司 | Method for treating sodium sulfide waste water |
| CN205598969U (en) * | 2016-02-25 | 2016-09-28 | 山东京博众诚清洁能源有限公司 | Desulfurization solvent regenerating unit |
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- 2021-08-20 CN CN202110959967.2A patent/CN113443753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403459A (en) * | 2001-08-24 | 2003-03-19 | 中国石油天然气股份有限公司 | Prepn of oxidizing and desulfurizing catalyst phthalocyanine cobalt sulfonate |
| CN101143746A (en) * | 2006-09-13 | 2008-03-19 | 中国石油天然气股份有限公司 | Method for processing sulfur-containing waste lye |
| CN102992469A (en) * | 2012-12-07 | 2013-03-27 | 山东汇海医药化工有限公司 | Method for treating sodium sulfide waste water |
| CN205598969U (en) * | 2016-02-25 | 2016-09-28 | 山东京博众诚清洁能源有限公司 | Desulfurization solvent regenerating unit |
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