CN220907314U - High ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resource system - Google Patents
High ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resource system Download PDFInfo
- Publication number
- CN220907314U CN220907314U CN202322464725.3U CN202322464725U CN220907314U CN 220907314 U CN220907314 U CN 220907314U CN 202322464725 U CN202322464725 U CN 202322464725U CN 220907314 U CN220907314 U CN 220907314U
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- CN
- China
- Prior art keywords
- ammonia nitrogen
- waste liquid
- reaction tank
- heavy metal
- feeding pipe
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 28
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000010814 metallic waste Substances 0.000 title claims abstract description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 238000011084 recovery Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 238000001704 evaporation Methods 0.000 claims abstract description 30
- 230000008020 evaporation Effects 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000004064 recycling Methods 0.000 claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 13
- 239000003513 alkali Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000002425 crystallisation Methods 0.000 claims abstract description 5
- 230000008025 crystallization Effects 0.000 claims abstract description 5
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract description 4
- 235000011130 ammonium sulphate Nutrition 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000006386 neutralization reaction Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
The utility model discloses a high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system, which comprises a first reaction tank, a waste liquid feeding pipe and an alkali liquid feeding pipe, wherein the waste liquid feeding pipe and the alkali liquid feeding pipe are connected to the top of the first reaction tank; the evaporation raw water pool is connected with a low-temperature evaporator, the low-temperature evaporator is connected with an evaporation water pool, and the evaporation water pool is connected with a second reaction tank; the top of the second reaction tank is connected with a sulfuric acid feeding pipe, the bottom of the second reaction tank is connected with a steam evaporator, and the steam evaporator is also connected with a crystallization material cache tank and a total regulating tank. According to the method, ammonia nitrogen in the high ammonia nitrogen complex state heavy metal waste liquid is removed, the complex state heavy metal is converted into ionic state heavy metal and then is removed by using a chemical neutralization precipitation technology, ammonia nitrogen can be converted into ammonium sulfate for recycling, the treatment is simple and efficient, the effluent can reach the standard, and the recycling can be realized.
Description
Technical Field
The utility model relates to the technical field of hazardous waste liquid disposal, in particular to a high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system.
Background
The industries of metal ore smelting, electrolysis, electroplating and the like are required to discharge a large amount of wastewater containing heavy metal ions each year, and the heavy metal wastewater is discharged into the environment and cannot be degraded by microorganisms, and can seriously harm human health, animals, plants and aquatic organisms through soil, water and air, especially food chains.
In recent years, with the development of surface treatment technology, electroplating and electroless plating are widely used, and the complexing agents used in a large amount in the process make the components of heavy metal wastewater more complex. Taking heavy metal wastewater in the electroplating industry as an example: the electroplating wastewater contains toxic and harmful heavy metal ions such as copper, nickel, cadmium, lead, chromium and the like, cyanide, ethylenediamine tetraacetic acid (EDTA), surfactant, brightening agent, anti-salt and other pollutants. Heavy metal ions generally form a complex with ammonia nitrogen, cyanide, EDTA or organic matters, most of complex heavy metals have high water solubility, and can stably exist in a wide pH range, the existing chemical neutralization precipitation and other technical processes are difficult to remove, and effluent cannot meet the discharge standard requirements. Therefore, the treatment of complex heavy metals has become one of the problems to be solved in environmental protection.
Disclosure of utility model
The utility model aims to solve the technical problems that the treatment difficulty is high, the effluent cannot meet the emission standard, and the resource waste exists in the prior art.
The technical scheme of the utility model is as follows: the high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recycling system comprises a first reaction tank, a waste liquid feeding pipe and an alkali liquid feeding pipe which are connected to the top of the first reaction tank, wherein the bottom of the first reaction tank is respectively connected with an evaporation raw water tank and a filter press, and the filter press is also connected with the evaporation raw water tank; the evaporation raw water pool is connected with a low-temperature evaporator, the low-temperature evaporator is connected with an evaporation water pool, and the evaporation water pool is connected with a second reaction tank; the top of the second reaction tank is connected with a sulfuric acid feeding pipe, the bottom of the second reaction tank is connected with a steam evaporator, and the steam evaporator is also connected with a crystallization material cache tank and a total regulating tank.
Furthermore, in the utility model, the first reaction tank and the second reaction tank are respectively provided with a stirrer and a pH meter.
Furthermore, in the utility model, the waste liquid feeding pipe, the alkali liquor feeding pipe and the sulfuric acid feeding pipe are all provided with diaphragm pumps.
Furthermore, the first reaction tank is provided with a first water outlet and a mud outlet, the first water outlet is connected with the evaporation raw water tank, and the mud outlet is connected with the filter press through a mud valve.
Furthermore, the second reaction tank is provided with a second water outlet, and the second water outlet is connected with the steam evaporator.
Furthermore, the low-temperature evaporator is also connected with a concentrated solution treatment device.
Compared with the prior art, the utility model has the following advantages: the method is mainly aimed at the treatment of the high ammonia nitrogen complex state heavy metal waste liquid, and the ammonia nitrogen in the high ammonia nitrogen complex state heavy metal waste liquid is firstly removed, the complex state heavy metal is converted into ionic state heavy metal and then removed by a chemical neutralization precipitation technology, the ammonia nitrogen can be converted into ammonium sulfate for recycling, the treatment is simple and efficient, the effluent can reach the standard, and the recycling can be realized.
Drawings
Fig. 1 is a system connection structure diagram of the present utility model.
Wherein: 1. a first reaction tank; 1a, a first water outlet; 1b, a mud discharging port; 2. a waste liquid feed pipe; 3. an alkali liquor feeding pipe; 4. evaporating a raw water pool; 5. a filter press; 6. a low temperature evaporator; 7. evaporating the water pool; 8. a second reaction tank; 8a, a second water outlet; 9. a sulfuric acid feed pipe; 10. a steam evaporator; 11. a crystallization material buffer tank; 12. a total regulating tank; 13. a stirrer; 14. a pH meter; 15. a concentrated solution treatment device.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
Examples:
The utility model relates to a concrete implementation mode of a high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system, which mainly comprises a first reaction tank 1, wherein the top of the first reaction tank 1 is connected with a waste liquid feeding pipe 2 and an alkali liquid feeding pipe 3, the bottom of the first reaction tank 1 is provided with a first water outlet 1a and a mud discharging port 1b, the first water outlet 1a is connected with an evaporation raw water tank 4, the mud discharging port 1b is connected with a filter press 5 through a mud discharging valve, and the filter press 5 is also connected with the evaporation raw water tank 4.
The evaporation raw water tank 4 is connected with a low-temperature evaporator 6, and the low-temperature evaporator 6 is also respectively connected with an evaporation water tank 7 and a concentrated solution treatment device 15.
The evaporation pond 7 is connected with a second reaction tank 8, the top of the second reaction tank 8 is connected with a sulfuric acid feeding pipe 9, the bottom of the second reaction tank is provided with a second water outlet 8a, and a steam evaporator 10 is connected with the second water outlet 8a, and the steam evaporator 10 is connected with a crystallization material cache tank 11 and a total regulating tank 12.
In the embodiment, a stirrer 13 and a pH meter 14 are arranged in the first reaction tank 1 and the second reaction tank 8, and diaphragm pumps are arranged on the waste liquid feeding pipe 2, the alkali liquid feeding pipe 3 and the sulfuric acid feeding pipe 9.
When the system of the embodiment specifically works, high ammonia nitrogen complex state heavy metal waste liquid and waste alkali liquid are respectively pumped into a first reaction tank 1 through a waste liquid feeding pipe 2 and an alkali liquid feeding pipe 3 by a diaphragm pump, a stirrer 13 is started, the addition of the waste liquid and the alkali liquid is controlled, a pH meter 14 is observed, stirring is stopped when the addition is displayed at about 10, the first reaction tank 1 is left until mud is precipitated below a first water outlet 1a, the first water outlet 1a is opened, supernatant flows to an evaporation raw water tank 4, a mud discharging valve is opened, mud-water mixture at the bottom is discharged to a filter press 5 through a mud discharging port 1b, and filter pressing effluent of the filter press 5 is further discharged to the evaporation raw water tank 4. The water in the evaporation raw water tank 4 enters the low-temperature evaporator 6 to start evaporation, the low-temperature evaporator 6 adopts electric evaporation, the evaporated water flows into the evaporation water outlet tank 7, and the evaporated concentrate is discharged to the concentrate treatment device 15 for further treatment. The effluent from the evaporation pond 7 is pumped into a second reaction tank 8, a stirrer 13 is started, and a proper amount of sulfuric acid is added through a sulfuric acid feed pipe 9 by a diaphragm pump, so that a pH meter 14 is displayed at about 4-5. After the reaction is finished, the effluent of the second reaction tank 8 is discharged to a steam evaporator 10 through a second water outlet 8a, the steam evaporator 10 adopts steam for evaporation, the evaporated crystal is ammonium sulfate, the ammonium sulfate is discharged to a crystal material buffer tank 11 for storage, and the evaporated effluent is discharged to a total regulating tank 12 for further treatment.
The above embodiments are merely for illustrating the technical concept and features of the present utility model, and are not intended to limit the scope of the present utility model to those skilled in the art to understand the present utility model and implement the same. All modifications made according to the spirit of the main technical proposal of the utility model should be covered in the protection scope of the utility model.
Claims (6)
1. The utility model provides a high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resourceful system which characterized in that: the device comprises a first reaction tank (1), a waste liquid feeding pipe (2) and an alkali liquid feeding pipe (3) which are connected to the top of the first reaction tank (1), wherein the bottom of the first reaction tank (1) is respectively connected with an evaporation raw water tank (4) and a filter press (5), and the filter press (5) is also connected with the evaporation raw water tank (4); the evaporation raw water tank (4) is connected with a low-temperature evaporator (6), the low-temperature evaporator (6) is connected with an evaporation water tank (7), and the evaporation water tank (7) is connected with a second reaction tank (8); the top of the second reaction tank (8) is connected with a sulfuric acid feeding pipe (9), the bottom is connected with a steam evaporator (10), and the steam evaporator (10) is also connected with a crystallization material buffer tank (11) and a total regulating tank (12).
2. The high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system according to claim 1, which is characterized in that: the first reaction tank (1) and the second reaction tank (8) are internally provided with a stirrer (13) and a pH meter (14).
3. The high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system according to claim 1, which is characterized in that: and diaphragm pumps are arranged on the waste liquid feeding pipe (2), the alkali liquor feeding pipe (3) and the sulfuric acid feeding pipe (9).
4. The high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system according to claim 1, which is characterized in that: the first reaction tank (1) is provided with a first water outlet (1 a) and a mud outlet (1 b), the first water outlet (1 a) is connected with the evaporation raw water tank (4), and the mud outlet (1 b) is connected with the filter press (5) through a mud valve.
5. The high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system according to claim 1, which is characterized in that: the second reaction tank (8) is provided with a second water outlet (8 a), and the second water outlet (8 a) is connected with the steam evaporator (10).
6. The high ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery and recycling system according to claim 1, which is characterized in that: the low-temperature evaporator (6) is also connected with a concentrated solution treatment device (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322464725.3U CN220907314U (en) | 2023-09-12 | 2023-09-12 | High ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resource system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322464725.3U CN220907314U (en) | 2023-09-12 | 2023-09-12 | High ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resource system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220907314U true CN220907314U (en) | 2024-05-07 |
Family
ID=90916817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322464725.3U Active CN220907314U (en) | 2023-09-12 | 2023-09-12 | High ammonia nitrogen complex state heavy metal waste liquid ammonia nitrogen recovery resource system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220907314U (en) |
-
2023
- 2023-09-12 CN CN202322464725.3U patent/CN220907314U/en active Active
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