CN113185016A - Limestone-gypsum method desulfurization wastewater recycling treatment and utilization process - Google Patents
Limestone-gypsum method desulfurization wastewater recycling treatment and utilization process Download PDFInfo
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- CN113185016A CN113185016A CN202110545463.6A CN202110545463A CN113185016A CN 113185016 A CN113185016 A CN 113185016A CN 202110545463 A CN202110545463 A CN 202110545463A CN 113185016 A CN113185016 A CN 113185016A
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- desulfurization wastewater
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 239000002351 wastewater Substances 0.000 title claims abstract description 52
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 46
- 230000023556 desulfurization Effects 0.000 title claims abstract description 46
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 15
- 239000010440 gypsum Substances 0.000 title claims abstract description 15
- 238000004064 recycling Methods 0.000 title abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 6
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000003546 flue gas Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000000706 filtrate Substances 0.000 claims description 11
- 230000015556 catabolic process Effects 0.000 claims description 10
- 238000006731 degradation reaction Methods 0.000 claims description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 239000002244 precipitate Substances 0.000 claims description 8
- -1 ammonia ions Chemical class 0.000 claims description 7
- 239000008267 milk Substances 0.000 claims description 7
- 210000004080 milk Anatomy 0.000 claims description 7
- 235000013336 milk Nutrition 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000005352 clarification Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 230000003009 desulfurizing effect Effects 0.000 claims description 5
- 239000013049 sediment Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000012047 saturated solution Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/529—Processes or devices for preparing lime water
-
- 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
-
- 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
- C02F2101/12—Halogens or halogen-containing 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a limestone-gypsum method desulfurization wastewater recycling process, which comprises S1 evaporation concentration treatment, S2 ammonia recovery treatment, S3 neutralization filtration treatment and S4 resource utilization treatment. The invention belongs to the technical field of desulfurization wastewater treatment processes, and particularly provides a limestone-gypsum desulfurization wastewater resource treatment and utilization process which is simple in treatment process and capable of realizing maximum utilization of desulfurization wastewater resources.
Description
Technical Field
The invention belongs to the technical field of desulfurization wastewater treatment processes, and particularly relates to a limestone-gypsum method desulfurization wastewater recycling process.
Background
In recent years, with the large-scale construction of the steel industry, SO2 generated in the sintering and pelletizing production process accounts for more than 60% of the production system of steel enterprises, and the control of the emission of SO2 in the sintering and pelletizing production process becomes the control key point of the steel enterprises.
The wet limestone-gypsum desulfurization technology is generally applied to thermal power plants as a mature and stable desulfurization technology, is favored by iron and steel enterprises, and becomes one of the key technologies for energy conservation and emission reduction popularization. In order to prevent the corrosion of chloride ion enrichment on desulfurization equipment, a small amount of wastewater is inevitably generated in the wet desulfurization process, the wastewater is high in chlorine and high in salt content and is enriched with heavy metals, the wastewater is not suitable for being discharged to a steel mill wastewater pipe network for centralized treatment, and is not suitable for entering an urban wastewater treatment system for centralized treatment, the investment cost of outward transportation centralized treatment is high, and the treatment is difficult.
The reverse osmosis concentration method, the seed crystal method and the like in the prior art are common processes for treating the wastewater at present, but respectively comprise the following defects: (1) the reverse osmosis concentration method has complex system operation, needs pretreatment including treatment of wastewater turbidity, scale formation substances, COD and the like, and the quality of the recovered water treated by the process is lower than that of the recovered water treated by the seed crystal method, and can not realize zero discharge of the wastewater, namely can not be completely recovered; meanwhile, the treatment result of the reverse osmosis concentration method shows that part of the wastewater needs to be discharged to nearby areas, so that the surrounding environment is polluted, and the pollution treatment cost is increased. (2) The seed crystal method can treat the waste water with lower content of pollutants in a conventional water system, for example, the waste water with lower content of pollution elements such as calcium ions and sulfate ions is discharged to nearby areas after the waste water is treated by the seed crystal method, the pollution degree to the environment is lower, the waste water is easy to clean, the cost for subsequent pollution treatment is lower, but attention needs to be paid to the fact that the desulfurization waste water enters a preheating ring section in a treater and scales due to temperature rise, the scaling can cause the operation of a waste water processor, the equipment is not beneficial to maintenance, the difficulty in cleaning the treater is increased, the service life of the equipment is shortened, and the equipment cost is increased.
Based on the problems, the invention aims to provide a treatment and utilization process which is simple and can realize the maximum resource utilization of the desulfurization wastewater.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides a limestone-gypsum desulfurization wastewater resource treatment and utilization process which is characterized in that the desulfurization wastewater is concentrated by evaporation and then is enriched with chloride ions and ammonia ions, lime milk is added to be mixed with slurry to blow ammonia, the blown ammonia gas is directly used for sintering flue gas SCR denitration, the slurry after ammonia blowing is neutralized by waste hydrochloric acid and then is filtered, the high-content chloride of the filtrate is used for sintering ore pouring to reduce the low-temperature reduction degradation rate of the sintering ore, and the filtered solid is used for sintering flue gas desulfurization, so that the resource utilization of the desulfurization wastewater is realized and the emission of the desulfurization wastewater is 0.
The technical scheme adopted by the invention is as follows: the invention relates to a limestone-gypsum method desulfurization wastewater recycling treatment and utilization process, which comprises the following steps:
s1 evaporation concentration treatment: evaporating and concentrating the desulfurization wastewater, and enriching chloride ions and ammonia ions in the treated desulfurization wastewater; calcium sulfate in the wastewater is a saturated solution, the enriched calcium sulfate is precipitated, and the concentration of the calcium sulfate in the wastewater is unchanged;
s2 ammonia recovery treatment: adding lime milk into the desulfurization wastewater enriched with chloride ions and ammonia ions, stirring to respectively generate ammonia gas and slurry, and sending the blown ammonia gas to denitration for directly using in sintering flue gas SCR denitration; after lime milk is added, heavy metal ions are precipitated, ammonia is blown to desulfurization for SCR desulfurization, and chloride ions are unchanged;
and S3 neutralization filtering treatment: adding waste hydrochloric acid into the slurry after ammonia blowing, adjusting the pH value to be neutral, and filtering to respectively obtain filtrate and precipitate;
s4 resource utilization process: the filtrate obtained in the step S3 contains high-content chloride, the filtrate is used for pouring the sinter to reduce the low-temperature reduction degradation rate of the sinter, and the precipitate is used for desulfurizing the sintering flue gas.
Further, the filtration of the step S3 can be replaced by a standing clarification method, the supernatant and the bottom slurry precipitate are obtained by the standing clarification method, respectively, the supernatant is conveyed to sintering for casting the sinter ore, so that the low-temperature reduction degradation rate of the sinter ore can be reduced, and the bottom slurry precipitate is used for desulphurization of the sintering flue gas, thereby realizing the resource utilization of the desulphurization wastewater and achieving 0 discharge.
Further, the pH value is adjusted to 7 to 8 in the step S3.
Further, before the ammonia gas obtained in the step S2 is sent to denitration, an impurity removal step is performed to mainly remove air therein.
Further, the step of removing impurities can be realized by adsorbing ammonia gas with water, and desorbing the ammonia gas after the ammonia gas is sent to a specified place.
The beneficial effects obtained by adopting the scheme are as follows: the utility model provides a lime stone-gypsum method desulfurization waste water resourceful treatment utilizes technology, enrichment chlorion and ammonia root ion after evaporation concentration, add lime milk and mix thick liquid and blow the ammonia, the ammonia that blows is directly used for sintering flue gas SCR denitration, the thick liquid after blowing the ammonia is with waste hydrochloric acid neutralization postfiltration, utilize the high chloride of filtrating high content to be used for the sintering deposit to water the ore and reduce the sintering deposit low temperature reduction degradation rate, the solid matter after the filtration is used for sintering flue gas desulfurization, can not only reduce the sintering deposit low temperature reduction degradation rate, the product can also be used for sintering flue gas desulfurization, thereby realize the utilization of desulfurization waste water resourceful and reach 0 and discharge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a limestone-gypsum method desulfurization wastewater recycling treatment and utilization process, which comprises the following steps:
s1 evaporation concentration treatment: evaporating and concentrating the desulfurization wastewater, enriching chloride ions and ammonia ions in the treated desulfurization wastewater, wherein calcium sulfate in the wastewater is a saturated solution, and the calcium sulfate is precipitated after enrichment, so that the concentration of calcium sulfate in the wastewater is unchanged;
s2 ammonia recovery treatment: adding lime milk into the desulfurization wastewater enriched with chloride ions and ammonia ions, stirring to respectively generate ammonia gas and slurry, and sending the blown ammonia gas to denitration for directly using in sintering flue gas SCR denitration, wherein the chloride ions are unchanged;
and S3 neutralization filtering treatment: adding waste hydrochloric acid into the slurry after ammonia blowing, adjusting the pH value to 7-8, and then filtering to respectively obtain filtrate and precipitate;
s4 resource utilization process: the filtrate obtained in the step S3 contains high-content chloride, the filtrate is used for casting the sinter to reduce the low-temperature reduction degradation rate of the sinter, and the precipitate is used for desulfurizing the sintering flue gas, so that the resource utilization of the desulfurization wastewater is realized and the discharge reaches 0.
The filtration of the step S3 can be replaced by a standing clarification method, supernatant and bottom slurry sediment are respectively obtained by the standing clarification method, the supernatant is conveyed to sintering for pouring the sinter, the low-temperature reduction degradation rate of the sinter can be reduced, and the bottom slurry sediment is used for desulfurizing the sintering flue gas, so that the resource utilization of the desulfurization wastewater is realized, and the discharge of 0 is achieved.
And in the step S3, the pH value is adjusted to 7-8.
And (4) removing impurities from the ammonia gas obtained in the step S2 before the ammonia gas is sent to denitration, and mainly removing air in the ammonia gas. In the impurity removal step, ammonia gas can be adsorbed by water and then desorbed after being sent to a specified place.
When the method is used specifically, the desulfurization wastewater is evaporated and concentrated to enrich chloride ions and ammonia radicals, lime milk is added to mix with slurry to blow ammonia, the blown ammonia is directly used for SCR denitration of sintering flue gas, the slurry after ammonia blowing is neutralized by waste hydrochloric acid and then filtered, the high-content chloride of the filtrate is used for pouring the sintering ore to reduce the low-temperature reduction degradation rate of the sintering ore, and the filtered solid is used for desulfurization of the sintering flue gas. Thereby realizing the resource utilization of the desulfurization waste water and achieving 0 discharge.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A limestone-gypsum method desulfurization wastewater resource treatment and utilization process is characterized by comprising the following steps:
s1 evaporation concentration treatment: evaporating and concentrating the desulfurization wastewater, and enriching chloride ions and ammonia ions in the treated desulfurization wastewater;
s2 ammonia recovery treatment: adding lime milk into the desulfurization wastewater enriched with chloride ions and ammonia ions, stirring to respectively generate ammonia gas and slurry, and directly using the blown ammonia gas for sintering flue gas SCR denitration;
and S3 neutralization filtering treatment: adding waste hydrochloric acid into the slurry after ammonia blowing, adjusting the pH value to be neutral, and filtering to respectively obtain filtrate and precipitate;
s4 resource utilization process: the filtrate obtained in the step S3 contains high-content chloride, the filtrate is used for pouring the sinter to reduce the low-temperature reduction degradation rate of the sinter, and the precipitate is used for desulfurizing the sintering flue gas.
2. The limestone-gypsum method desulfurization wastewater resource treatment and utilization process according to claim 1, characterized in that: the filtration of the step S3 can be replaced by a standing clarification method, supernatant and bottom slurry sediment are respectively obtained by the standing clarification method, the supernatant is conveyed to sintering for pouring the sinter, the low-temperature reduction degradation rate of the sinter can be reduced, and the bottom slurry sediment is used for desulfurizing sintering flue gas.
3. The limestone-gypsum method desulfurization wastewater resource treatment and utilization process according to claim 1, characterized in that: and in the step S3, the pH value is adjusted to 7-8.
4. The limestone-gypsum method desulfurization wastewater resource treatment and utilization process according to claim 1, characterized in that: and (4) removing impurities from the ammonia gas obtained in the step S2 before the ammonia gas is sent to denitration, and mainly removing air in the ammonia gas.
5. The limestone-gypsum method desulfurization wastewater resource treatment and utilization process according to claim 4, characterized in that: in the impurity removal step, ammonia gas can be adsorbed by water and then desorbed after being sent to a specified place.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545463.6A CN113185016A (en) | 2021-05-19 | 2021-05-19 | Limestone-gypsum method desulfurization wastewater recycling treatment and utilization process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110545463.6A CN113185016A (en) | 2021-05-19 | 2021-05-19 | Limestone-gypsum method desulfurization wastewater recycling treatment and utilization process |
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| CN113185016A true CN113185016A (en) | 2021-07-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819018A (en) * | 2014-01-24 | 2014-05-28 | 宁波钢铁有限公司 | Utilization method of flue gas desulfurization wastewater produced in sintering limestone-gypsum method, and device thereof |
| CN105967420A (en) * | 2016-06-17 | 2016-09-28 | 国网河南省电力公司电力科学研究院 | Synergistic gas-liquid-solid pollutant treatment system based on power plant wastewater zero-discharge technology |
| CN206466979U (en) * | 2016-12-06 | 2017-09-05 | 山东莱钢节能环保工程有限公司 | A kind of sintering flue gas desulfurization waste water zero discharge device based on limestone-gypsum method |
| CN108686481A (en) * | 2018-06-25 | 2018-10-23 | 江苏新欧环保资源综合利用有限公司 | Caustic sludge desulfuration and the two-way combined governance device of desulfurization wastewater and administering method |
| CN111003870A (en) * | 2019-12-27 | 2020-04-14 | 攀钢集团西昌钢钒有限公司 | Desulfurization wastewater treatment method and treatment device |
| CN111547919A (en) * | 2020-05-12 | 2020-08-18 | 东方电气集团东方锅炉股份有限公司 | Sintering plant desulfurization wastewater resource zero-discharge process and system |
-
2021
- 2021-05-19 CN CN202110545463.6A patent/CN113185016A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103819018A (en) * | 2014-01-24 | 2014-05-28 | 宁波钢铁有限公司 | Utilization method of flue gas desulfurization wastewater produced in sintering limestone-gypsum method, and device thereof |
| CN105967420A (en) * | 2016-06-17 | 2016-09-28 | 国网河南省电力公司电力科学研究院 | Synergistic gas-liquid-solid pollutant treatment system based on power plant wastewater zero-discharge technology |
| CN206466979U (en) * | 2016-12-06 | 2017-09-05 | 山东莱钢节能环保工程有限公司 | A kind of sintering flue gas desulfurization waste water zero discharge device based on limestone-gypsum method |
| CN108686481A (en) * | 2018-06-25 | 2018-10-23 | 江苏新欧环保资源综合利用有限公司 | Caustic sludge desulfuration and the two-way combined governance device of desulfurization wastewater and administering method |
| CN111003870A (en) * | 2019-12-27 | 2020-04-14 | 攀钢集团西昌钢钒有限公司 | Desulfurization wastewater treatment method and treatment device |
| CN111547919A (en) * | 2020-05-12 | 2020-08-18 | 东方电气集团东方锅炉股份有限公司 | Sintering plant desulfurization wastewater resource zero-discharge process and system |
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Application publication date: 20210730 |