CN204981419U - Be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems - Google Patents
Be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems Download PDFInfo
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- CN204981419U CN204981419U CN201520608367.1U CN201520608367U CN204981419U CN 204981419 U CN204981419 U CN 204981419U CN 201520608367 U CN201520608367 U CN 201520608367U CN 204981419 U CN204981419 U CN 204981419U
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- China
- Prior art keywords
- waste water
- ammonia
- ionic reaction
- line mixer
- still process
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title abstract description 9
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 125000000129 anionic group Chemical group 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 8
- 229940095054 ammoniac Drugs 0.000 claims description 6
- CVTZKFWZDBJAHE-UHFFFAOYSA-N [N].N Chemical compound [N].N CVTZKFWZDBJAHE-UHFFFAOYSA-N 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 41
- 239000002351 wastewater Substances 0.000 abstract description 23
- 229910021529 ammonia Inorganic materials 0.000 abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 6
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 6
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 3
- -1 bicarbonate radical Chemical class 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- 239000011575 calcium Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 238000010992 reflux Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229960001708 magnesium carbonate Drugs 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model provides a be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems, including a line mixer, the cloudy ionic reaction jar of being connected with a line mixer, the 2nd line mixer who is connected with cloudy ionic reaction jar, the positive ionic reaction jar of being connected with the 2nd line mixer, the ceramic membrane filter who is connected with positive ionic reaction jar, set up the check valve on the cloudy ionic reaction jar and breathed the mouth, be provided with agitating unit in the sun ionic reaction jar, pottery membrane filter is provided with the circulation booster pump. Through adding hydrochloric acid, naOH, can get rid of carbonate in the waste water, bicarbonate radical, calcium ion and magnesium ion, effectively prevent waste water scale deposit in ammonia still process equipment, the treatment effeciency is ensured to the maintenance period of extension equipment.
Description
Technical field
The utility model belongs to technical field of waste water processing, relates to pretreated technique before a kind of high-concentration ammonia nitrogenous wastewater ammonia still process.
Background technology
High-concentration ammonia nitrogenous wastewater is a process difficult problem for the industries such as rare earth, coalification, coking, petrochemical industry, agricultural chemicals, medicine, the most ammonia nitrogen concentration of this type of waste water is at more than 2000mg/L, some is even up to 8000 ~ 10000mg/L, and biodegradability is poor, carbon-nitrogen ratio is low, there is larger toxicity, be difficult to process with traditional biochemical process, be one of domestic waste water compared with refractory reason all the time.
The method of current process ammonia nitrogen waste water mainly contains Physical, chemical method and biological process etc.Physical method has reverse osmosis, distillation, soil irrigation; Chemical method has ion exchange method, air stripping, chemical precipitation method, break point chlorination, electrodialysis, electrochemical treatment, catalytic cracking.Owing to affecting by factors such as former water ammonia nitrogen concentration, working cost are high, the denitrification process of the ammonia nitrogen waste water of great majority process is at present the method for carrying out a biological disposal upon as main or biological treatment and physical chemistry combine.
For the treatment process of high ammonia-nitrogen wastewater, application at present has ammonia aeration method more widely, ammonia treatment technology, stripping reclaim(ed) sulfuric acid ammonium technology etc. are reclaimed in ammonia still process.But due to tail gas problem and uncontrollable discharge problem, ammonia aeration method is not approved gradually, ammonia still process and stripping two kinds of methods progressively become prevailing technology in high-concentration ammonia nitrogenous wastewater treatment process.But various Pollutant levels vary in the ammonia nitrogen waste water of industry-by-industry, the process of evaporation can heat up to waste water, and intensification can make deliquescent calcium ion (Ca in water
2+) and magnesium ion (Mg
2+) form water-fast compound and mixture with some acid ion, as calcium carbonate, magnesiumcarbonate etc., the dirty quality that these materials are formed is hard, greatly reduce the heat conductivility of interchanger, cause the blocking of equipment simultaneously, have a strong impact on ammonia still process effect, affect the equipment cycle of operation.Therefore must pre-treatment be carried out before ammonia still process.
Summary of the invention
For the problems referred to above, the purpose of this utility model is that providing a kind of carries out pre-treatment to the waste water before ammonia still process, effectively prevent waste water fouling in ammonia still process equipment, the maintenance intervals of extension device, guarantees that the one of processing efficiency is for good antiscale property pretreatment system and treatment process thereof before industrial waste water with high ammoniac nitrogen ammonia still process.
For realizing the utility model object, provide following technical scheme: a kind of for good antiscale property pretreatment system before industrial waste water with high ammoniac nitrogen ammonia still process, it is characterized in that comprising the first line mixer, the anionic reactive tank be connected with the first line mixer, second pipe mixing tank tank connected with anionic reactive, the cationoid reaction tank be connected with second pipe mixing tank, purpose ceramic-film filter tank connected with cationoid reaction, anionic reactive tank offers check valve pneumostome, whipping appts is provided with in cationoid reaction tank, purpose ceramic-film filter is provided with circularly-supercharged pump.
For realizing the utility model object, provide following technical scheme: a kind for the treatment of process for good antiscale property pretreatment system before industrial waste water with high ammoniac nitrogen ammonia still process
,it is characterized in that comprising the following steps:
A. except carbanion (CO
3 2-): waste water is first through the first line mixer, 10-30% concentration hydrochloric acid is added in line mixer, adjustment pH is 1.5-4.5, enter anionic reactive tank, reaction 15-30min, anionic reactive tank internal reflux ratio 300%-800%, through internal reflux disturbance, the carbon dioxide that reaction produces is discharged from the check valve pneumostome anionic reactive tank; Hydrogen ion (H in hydrochloric acid
+) with former water in carbanion (CO
3 2-), bicarbonate ion (HCO
3 -) react, under the disturbance of anionic reactive tank internal reflux, produce carbonic acid gas (CO
2) gas and water (H
2o), thus remove carbanion be avoid the formation of calcium carbonate (CaCO
3), magnesiumcarbonate (MgCO
3) crystal is dirty, chemistry dirt.
B. deliming (Ca
2+), magnesium ion (Mg
2+): water outlet enters second pipe mixing tank, and the NaOH adding 30-40% regulates pH to be 9.5-11.5, enters cationoid reaction tank, reaction 15-30min, mixing speed 40-120r/min in retort; Airtight stirring in cationoid reaction tank, calcium ion and magnesium ion react with alkali to produce respectively and precipitate: Ca
2++ 2OH
-=Ca (OH)
2↓, Mg
2++ 2OH
-=Mg (OH)
2↓.
C. filtering separation: enter purpose ceramic-film filter after reaction, purpose ceramic-film filter is furnished with recycle pump topping-up pump, undertaken retaining filtering separation by film with cross-current flow by waste water supercharging 0.8-3.0MPa, the liquid total hardness after ceramic membrane filter is reduced to 0.05-0.2g/L(with CaCO
3meter), the precipitating sludge under retaining send sludge dewatering equipment to dewater, and dehydration clear liquid returns former water storage tank.Carbon Dioxide in Air (CO during for avoiding using traditional precipitate and separate
2) enter water body formation carbonate (CO
3 2-), bicarbonate ion (HCO
3 -) with residual calcium (Ca in waste water
2+), magnesium ion (Mg
2+) combine and produce precipitation, adopt in the utility model that physical strength is high, the purpose ceramic-film filter of stable chemical performance.By the aperture of 2nm-10um, the film of 35%-50% porosity, adopt the mode of cross-flow to be separated the calcium hydroxide in waste water, magnesium hydrate precipitate, the water outlet after separation directly enters ammonia steaming system.
The utility model beneficial effect: the utility model can remove carbonate in waste water, bicarbonate radical, calcium ion and magnesium ion, effectively prevent waste water fouling in ammonia still process equipment, the maintenance intervals of extension device, guarantees processing efficiency.
Accompanying drawing explanation
Fig. 1 is system schematic of the present utility model.
Embodiment
Embodiment 1:
Certain chemical plant high ammonia-nitrogen wastewater adopts ammonia distillation process to process, water yield 2t/h, and water-quality guideline is: ammonia nitrogen=75000-85000mg/L, pH=6-9, specific conductivity=15-50ms/cm, and doubly, total hardness=2-20g/L(is with CaCO for colourity=48-1024
3meter).
Ammonia still process unit is made up of preheater, ammonia still, condenser, gas-liquid separator, ammonia absorption tower and exhaust gas treating device, and for avoiding waste water fouling in the equipment such as the preheater of ammonia still process unit, affect efficiency, former water need carry out scale removal pre-treatment.
Waste water is first through DN32FRP first line mixer 1, adding 10-30% concentration salt acid for adjusting pH is 1.5-4.5, enter anionic reactive tank 2, reaction 15-30min, anionic reactive tank 2 internal reflux ratio 300%-800%, through internal reflux disturbance, the carbon dioxide that reaction produces is discharged from check valve pneumostome, water outlet enters DN32FRP second pipe mixing tank 3, the NaOH adding 30-40% regulates pH to be 9.5-11.5, enters cationoid reaction tank 4, reaction 15-30min, mixing speed 40-120r/min in cationoid reaction tank 4, enters purpose ceramic-film filter 5 after reaction.Purpose ceramic-film filter 5 is furnished with circularly-supercharged pump, is undertaken retaining filtering separation by waste water supercharging 0.8-3.0MPa with cross-current flow by film, and the liquid total hardness after ceramic membrane filter is reduced to 0.05-0.2g/L(with CaCO
3meter).Precipitating sludge under retaining send sludge dewatering equipment to dewater, and dehydration clear liquid returns former water storage tank.
When the pretreated industrial waste water with high ammoniac nitrogen of scale removal enters ammonia still process unit again, realizing the interchanger maintenance clean cycle brings up to more than 3 months, and ton water saves low-pressure steam 10-30kg, and the concentration reclaiming ammoniacal liquor can bring up to 15-20% from 10-15%.
Claims (1)
1. one kind for good antiscale property pretreatment system before industrial waste water with high ammoniac nitrogen ammonia still process, it is characterized in that comprising the first line mixer, the anionic reactive tank be connected with the first line mixer, with anionic reactive tank connected second pipe mixing tank, the cationoid reaction tank be connected with second pipe mixing tank, with the tank connected purpose ceramic-film filter of cationoid reaction, anionic reactive tank offers check valve pneumostome, be provided with whipping appts in cationoid reaction tank, purpose ceramic-film filter is provided with circularly-supercharged pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608367.1U CN204981419U (en) | 2015-08-13 | 2015-08-13 | Be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520608367.1U CN204981419U (en) | 2015-08-13 | 2015-08-13 | Be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204981419U true CN204981419U (en) | 2016-01-20 |
Family
ID=55115806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520608367.1U Expired - Fee Related CN204981419U (en) | 2015-08-13 | 2015-08-13 | Be used for preventing before high ammonia -nitrogen concentration industrial waste water ammonia still process scale deposit pretreatment systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204981419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174532A (en) * | 2015-08-13 | 2015-12-23 | 江苏好山好水环保科技有限公司 | Pretreatment system for prevention of scaling of high ammonia-nitrogen industrial wastewater before ammonia distillation and treatment method thereof |
-
2015
- 2015-08-13 CN CN201520608367.1U patent/CN204981419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174532A (en) * | 2015-08-13 | 2015-12-23 | 江苏好山好水环保科技有限公司 | Pretreatment system for prevention of scaling of high ammonia-nitrogen industrial wastewater before ammonia distillation and treatment method thereof |
| CN105174532B (en) * | 2015-08-13 | 2018-05-01 | 江苏好山好水环保科技有限公司 | One kind is used for good antiscale property pretreatment system and its processing method before industrial waste water with high ammoniac nitrogen ammonia still process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20200813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |