CN107445351A - A kind of processing method of fluorine-containing ammonia nitrogen waste water - Google Patents
A kind of processing method of fluorine-containing ammonia nitrogen waste water Download PDFInfo
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- CN107445351A CN107445351A CN201710887294.8A CN201710887294A CN107445351A CN 107445351 A CN107445351 A CN 107445351A CN 201710887294 A CN201710887294 A CN 201710887294A CN 107445351 A CN107445351 A CN 107445351A
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- fluorine
- waste water
- ammonia nitrogen
- containing ammonia
- nitrogen waste
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- 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
- C02F1/5281—Installations for water purification using chemical agents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- 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
- C02F2101/14—Fluorine or fluorine-containing compounds
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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
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a kind of processing method of fluorine-containing ammonia nitrogen waste water, belong to technical field of waste water processing, the present invention handles fluorine-containing ammonia nitrogen waste water using precipitation plus the method for coagulating sedimentation, flocculant is added in the water inlet of flocculation basin, ammonia, fluorine ion in fluorine-containing ammonia nitrogen waste water fully flocculate, precipitated by inclined-plate clarifying basin and horizontal sedimentation tank two-stage, ammonia, the fluorine ion in fluorine-containing ammonia nitrogen waste water are removed completely, water outlet reaches technological requirement, the live load of follow-up ammonia removal column is substantially reduced, reduces fluorine-containing ammonia nitrogen waste water processing cost.
Description
Technical field
The invention belongs to technical field of waste water processing, the processing method law technology neck of more particularly to a kind of fluorine-containing ammonia nitrogen waste water
Domain.
Background technology
As the development of electronic industrial technology particularly IC chip industrial technology, electronics industry waste water are particularly electric
The sub- fluorine-containing nitrogen-containing wastewater of industry is treated as the protrusion problem in water treatment field.Electronics industry generally makes in procedure for producing
With such as hydrofluoric acid, sulfuric acid, phosphoric acid, ammoniacal liquor, hydrochloric acid, the substantial amounts of chemical agent of organic solvent so that the waste water of discharge contains
Largely there is the composition of pollution to surrounding enviroment, exacerbate China's water pollution and the tight of shortage of water resources situation completes degree.
The fluorine-containing nitrogen-containing wastewater of electronics industry has that water is big, and pollutant component is complicated, and contaminative is strong, and biodegradability is poor, always
Dissolved solid salt (TDS), the features such as ammonia nitrogen and content of fluoride are high.Electronic enterprise (IC chip enterprise) is at present to this
The waste water of type, generally after the processing of simple fluorine removal, can only be discharged into city without ripe effective processing method
Sewage treatment plant of city focuses on.Because such wastewater biodegradability is poor (BOD/COD ＜ 0.1), and due to municipal sewage treatment
The limitation of factory's technology, total nitrogen is not often up to standard in water outlet, easily causes the eutrophication for discharging water body, particularly to certain
A little specific pollutants (such as fluorine) can not effectively remove and can only reduce concentration by dilution.The ecological environment being on the rise is faced,
National requirements industrial enterprise must implement the principles and policies of " energy-saving and emission-reduction ", in environmental impact assessment reply of the industrial enterprise with water rich and influential family
In addition to requiring discharged wastewater met the national standard, the reclamation rate that waste water must reach certain is also distinctly claimed, conventional processing method is
The discharge that pollutant can not be efficiently reduced unlikely realized by wastewater regenerating and recycling effectively to reduce the discharge capacity of waste water,
Realize recycling economy.Therefore, it is necessary to improve handling process in wastewater treatment process, the discharge of pollutant is reduced to greatest extent
Amount, mitigates the pollution to surrounding enviroment, while improves the regeneration rate of waste water, saves the water resource of preciousness.
The content of the invention
The present invention is to overcome problems of the prior art, there is provided a kind of processing method of fluorine-containing ammonia nitrogen waste water, is used
Precipitation plus the method for coagulating sedimentation handle fluorine-containing ammonia nitrogen waste water, remove ammonia, the fluorine ion in fluorine-containing ammonia nitrogen waste water completely, water outlet reaches
To technological requirement, the live load of follow-up ammonia removal column is substantially reduced, reduces fluorine-containing ammonia nitrogen waste water processing cost.
The present invention adopts the following technical scheme that to solve above-mentioned problems of the prior art.
A kind of processing method of fluorine-containing ammonia nitrogen waste water, including neutralization pond, flocculation basin, inclined plate sedimentation pond, horizontal sedimentation tank, remove
Ammonia tower and sludge dewatering equipment, the treating method comprises following steps：
Step 1, fluorine-containing ammonia nitrogen waste water, which enters, carries out neutralization reaction in neutralization pond, quick lime or lime are put into Calcified pond
Breast, the pH for adjusting waste water are 10.5~11.5, and neutralization agitating device is provided with neutralization pond；
Step 2, the fluorine-containing ammonia nitrogen waste water after the neutralization obtained in step 1 enters in flocculation basin, in the water inlet of flocculation basin
Place adds flocculant, and flocculation stirring device is provided with flocculation basin；
Step 3, the fluorine-containing ammonia nitrogen waste water after the flocculation obtained in step 2 enters in inclined plate sedimentation pond, fluorine-containing ammonia nitrogen waste water
Separation of solid and liquid is completed in inclined plate sedimentation pond, obtains the first supernatant and the first sludge；
Step 4, the first supernatant obtained in step 3 enters horizontal sedimentation tank, and the solid-liquid two-phase in the first supernatant is entered
One step separates, and obtains the second supernatant and the second sludge；
Step 5, the second supernatant obtained in step 4, by being pumped into ammonia removal column, further remove in the first supernatant
Residual ammonia.
Further, the neutralization reaction time in step 1 is 5~10min.
Further, the flocculant concentration in step 2 be 0.05%~0.15%, flocculant addition be 0.6~
1.0mg/ (the fluorine-containing ammonia nitrogen waste waters of L).
Further, the flocculation time of the fluorine-containing ammonia nitrogen waste water after the neutralization in step 2 is 5~10min.
Further, the flocculant is aluminium polychloride and polyacrylamide, and aluminium polychloride is coagulant, polypropylene
Acid amides is flocculation aid.
Further, in step 3 fluorine-containing ammonia nitrogen waste water hydraulic detention time >=2h.
Relative to prior art, the present invention achieves following beneficial effect：The present invention is using precipitation plus the side of coagulating sedimentation
The fluorine-containing ammonia nitrogen waste water of method processing, the ammonia, fluorine ion in the water inlet of flocculation basin addition flocculant, fluorine-containing ammonia nitrogen waste water are abundant
Flocculation, precipitated by inclined-plate clarifying basin and horizontal sedimentation tank two-stage, remove ammonia, the fluorine ion in fluorine-containing ammonia nitrogen waste water completely, go out
Water reaches technological requirement, substantially reduces the live load of follow-up ammonia removal column, reduces fluorine-containing ammonia nitrogen waste water processing cost.
Embodiment
Below in conjunction with embodiments of the invention, the technical scheme of invention is clearly and completely described.Obviously, institute
The embodiment of description is only the part of the embodiment of the present invention, rather than whole embodiments.Based on embodiments of the invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this hair
The scope of bright protection.
A kind of processing method of fluorine-containing ammonia nitrogen waste water, including neutralization pond, flocculation basin, inclined plate sedimentation pond, horizontal sedimentation tank, remove
Ammonia tower and sludge dewatering equipment, the treating method comprises following steps：
Step 1, fluorine-containing ammonia nitrogen waste water, which enters, carries out neutralization reaction in neutralization pond, quick lime or lime are put into Calcified pond
Breast, the pH for adjusting waste water is 10.5~11.5, makes the F in waste water-Indissoluble is formed in the basic conditions with part heavy metal element
Material, neutralization agitating device is provided with neutralization pond, neutralizes agitating device and neutralization reaction effect is improved by mechanical agitation,
Also indissoluble material can be avoided to precipitate simultaneously.
Step 2, the fluorine-containing ammonia nitrogen waste water after the neutralization obtained in step 1 enters in flocculation basin, in the water inlet of flocculation basin
Place adds flocculant, and flocculation stirring device is provided with flocculation basin.Fluorine-containing ammonia nitrogen waste water stirs after adding flocculant by flocculation
The mechanical agitation collision of device is mixed into alumen ustum, is the preferable particle of settleability by the final sediment cohesion of chemical reaction.
Step 3, the fluorine-containing ammonia nitrogen waste water after the flocculation obtained in step 2 enters in inclined plate sedimentation pond, fluorine-containing ammonia nitrogen waste water
Separation of solid and liquid is completed in inclined plate sedimentation pond, obtains the first supernatant and the first sludge.
Step 4, the first supernatant obtained in step 3 enters horizontal sedimentation tank, and the solid-liquid two-phase in the first supernatant is entered
One step separates, and obtains the second supernatant and the second sludge.Horizontal sedimentation tank is cone bottom structure, and the second sludge sinks under gravity
Product is in the tapering of horizontal sedimentation tank.
Step 5, the second supernatant obtained in step 4, by being pumped into ammonia removal column, further remove in the first supernatant
Residual ammonia.
The first sludge obtained in step 3, and the second sludge obtained in step 4 are delivered to the sludge dewatering equipment by pump
It is middle to remove moisture therein, supernatant and sludge are obtained, supernatant flows back into neutralization pond.
Preferable scheme, the neutralization reaction time in step 1 is 5~10min.
Preferable scheme, the flocculant concentration in step 2 are 0.05%~0.15%, flocculant addition is 0.6~
1.0mg/ (the fluorine-containing ammonia nitrogen waste waters of L).
Preferable scheme, the flocculation time of the fluorine-containing ammonia nitrogen waste water after neutralization in step 2 is 5~10min.
Preferable scheme, the flocculant are aluminium polychloride and polyacrylamide, and aluminium polychloride is coagulant, poly- third
Acrylamide is flocculation aid.
Preferable scheme, hydraulic detention time >=2h of fluorine-containing ammonia nitrogen waste water in step 3.
Preferable scheme, seal cover board is provided with above neutralization pond, flocculation basin, inclined plate sedimentation pond and horizontal sedimentation tank,
Gas collection pipeline is provided with seal cover board, the port of export of gas collection pipeline is provided with blower fan, maintains to neutralize by blower fan
Pond, flocculation basin, the inside of inclined plate sedimentation pond and horizontal sedimentation tank are in micro-vacuum state, avoid fluorine-containing ammonia nitrogen waste water processing procedure
Workshop condition caused by the diffusion of middle ammonia deteriorates.
The present invention handles fluorine-containing ammonia nitrogen waste water using precipitation plus the method for coagulating sedimentation, is added in the water inlet of flocculation basin
Flocculant, ammonia, fluorine ion in fluorine-containing ammonia nitrogen waste water fully flocculate, precipitated by inclined-plate clarifying basin and horizontal sedimentation tank two-stage,
Ammonia, the fluorine ion in fluorine-containing ammonia nitrogen waste water are removed completely, and water outlet reaches technological requirement, substantially reduces the work of follow-up ammonia removal column
Load, reduce fluorine-containing ammonia nitrogen waste water processing cost.
Claims (6)
1. a kind of processing method of fluorine-containing ammonia nitrogen waste water, it is characterised in that including neutralization pond, flocculation basin, inclined plate sedimentation pond, advection
Sedimentation basin, ammonia removal column and sludge dewatering equipment, the treating method comprises following steps：
Step 1, fluorine-containing ammonia nitrogen waste water, which enters, carries out neutralization reaction in neutralization pond, quick lime or milk of lime are put into Calcified pond,
The pH for adjusting waste water is 10.5~11.5, and neutralization agitating device is provided with neutralization pond；
Step 2, the fluorine-containing ammonia nitrogen waste water after the neutralization obtained in step 1 enters in flocculation basin, adds in the water inlet of flocculation basin
Enter flocculant, flocculation stirring device is provided with flocculation basin；
Step 3, the fluorine-containing ammonia nitrogen waste water after the flocculation obtained in step 2 enters in inclined plate sedimentation pond, and fluorine-containing ammonia nitrogen waste water is oblique
Separation of solid and liquid is completed in plate settling tank, obtains the first supernatant and the first sludge；
Step 4, the first supernatant obtained in step 3 enters horizontal sedimentation tank, and the solid-liquid two-phase in the first supernatant is further
Separation, obtains the second supernatant and the second sludge；
Step 5, the second supernatant obtained in step 4, by being pumped into ammonia removal column, further remove and remained in the first supernatant
Ammonia.
A kind of 2. processing method of fluorine-containing ammonia nitrogen waste water according to claim 1, it is characterised in that the neutralization in step 1
Reaction time is 5~10min.
A kind of 3. processing method of fluorine-containing ammonia nitrogen waste water according to claim 1, it is characterised in that the neutralization in step 2
The flocculation time of fluorine-containing ammonia nitrogen waste water afterwards is 5~10min.
A kind of 4. processing method of fluorine-containing ammonia nitrogen waste water according to claim 1, it is characterised in that the flocculation in step 2
Agent concentration is 0.05%~0.15%, and flocculant addition is 0.6~1.0mg/ (the fluorine-containing ammonia nitrogen waste waters of L).
A kind of 5. processing method of fluorine-containing ammonia nitrogen waste water according to claim 1 or 4, it is characterised in that the flocculant
For aluminium polychloride and polyacrylamide, aluminium polychloride is coagulant, and polyacrylamide is flocculation aid.
A kind of 6. processing method of fluorine-containing ammonia nitrogen waste water according to claim 1, it is characterised in that fluorine-containing ammonia in step 3
Hydraulic detention time >=2h of nitrogen waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887294.8A CN107445351A (en) | 2017-09-27 | 2017-09-27 | A kind of processing method of fluorine-containing ammonia nitrogen waste water |
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| CN201710887294.8A CN107445351A (en) | 2017-09-27 | 2017-09-27 | A kind of processing method of fluorine-containing ammonia nitrogen waste water |
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| CN107445351A true CN107445351A (en) | 2017-12-08 |
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| CN201710887294.8A Withdrawn CN107445351A (en) | 2017-09-27 | 2017-09-27 | A kind of processing method of fluorine-containing ammonia nitrogen waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040878A (en) * | 2019-05-14 | 2019-07-23 | 山东环瑞生态科技有限公司 | A kind of fluoride waste deep treatment method |
| CN110902881A (en) * | 2019-12-02 | 2020-03-24 | 沈阳环境科学研究院 | Efficient combined water treatment process for short-distance coagulating sedimentation and filtration |
| CN112830603A (en) * | 2021-01-20 | 2021-05-25 | 北京翰祺环境技术有限公司 | Multi-medium sewage advanced treatment system |
-
2017
- 2017-09-27 CN CN201710887294.8A patent/CN107445351A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110040878A (en) * | 2019-05-14 | 2019-07-23 | 山东环瑞生态科技有限公司 | A kind of fluoride waste deep treatment method |
| CN110040878B (en) * | 2019-05-14 | 2021-10-26 | 山东环瑞生态科技有限公司 | Advanced treatment method for fluorine-containing wastewater |
| CN110902881A (en) * | 2019-12-02 | 2020-03-24 | 沈阳环境科学研究院 | Efficient combined water treatment process for short-distance coagulating sedimentation and filtration |
| CN112830603A (en) * | 2021-01-20 | 2021-05-25 | 北京翰祺环境技术有限公司 | Multi-medium sewage advanced treatment system |
| CN112830603B (en) * | 2021-01-20 | 2024-05-07 | 北京翰祺环境技术有限公司 | Multi-medium sewage advanced treatment system |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171208 |