CN110092355A - A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater - Google Patents
A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater Download PDFInfo
- Publication number
- CN110092355A CN110092355A CN201910489802.6A CN201910489802A CN110092355A CN 110092355 A CN110092355 A CN 110092355A CN 201910489802 A CN201910489802 A CN 201910489802A CN 110092355 A CN110092355 A CN 110092355A
- Authority
- CN
- China
- Prior art keywords
- solution
- fluorine
- hydrofluoric acid
- nitrogen
- ammonium salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/28—Ammonium phosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/19—Fluorine; Hydrogen fluoride
- C01B7/191—Hydrogen fluoride
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/24—Sulfates of ammonium
- C01C1/242—Preparation from ammonia and sulfuric acid or sulfur trioxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
- C01P2006/82—Compositional purity water content
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of methods for preparing hydrofluoric acid and ammonium salt using fluorine-containing nitrogen-containing wastewater, and described method includes following steps: (1) using the COD in electrocatalytic oxidation method removal waste water, obtaining solution A；(2) pH value of acquired solution A in step (1) is adjusted to alkalinity, gained alkaline solution respectively obtains solution B and solution C after passing through deamination film, and solution B obtains solution D after peracid solutions absorb；(3) in regulating step (2) acquired solution D pH, be concentrated to get ammonium salt；(4) acquired solution C obtains hydrofluoric acid solution and sodium hydroxide or potassium hydroxide solution after Bipolar Membrane in step (2), adjusts pH value of solution in sodium hydroxide or potassium hydroxide solution reuse to step (2).This process conditions is simple, and the maximization for realizing fluorine nitrogen resource recycles, and reduces the processing cost of waste liquid, realizes biggish economic benefit and environmental benefit.
Description
Technical field
The present invention relates to waste water recycling device technical fields, prepare hydrofluoric acid containing ammonia nitrogen by fluorine-containing more particularly, to a kind of
With the method for ammonium salt.
Background technique
With the development of electronic industrial technology especially IC chip industrial technology, electronics industry waste water is especially electric
The sub- fluorine-containing nitrogen-containing wastewater of industry is treated as the protrusion problem in water treatment field.Electronics industry usually makes in procedure for producing
With such as hydrofluoric acid, sulfuric acid, phosphoric acid, ammonium hydroxide, hydrochloric acid, a large amount of chemical agent of organic solvent, so that the waste water of discharge contains
Largely there is the ingredient of pollution to surrounding enviroment, exacerbates China's water pollution and the tight of shortage of water resources situation completes degree.
CN201309866Y discloses a kind of using " disk filtering-ultra-filtration membrane device-intermediate water tank-security personnel's filtering-reverse osmosis
The waste water recycling processing unit of technique thoroughly ", but cartridge filter blocking is frequently, needs to be replaced frequently, and increases production cost, this
Outside, reverse osmosis membrane cleaning effect is bad, and service life is shorter；It is fluorine-containing containing ammonia that CN102126806 A discloses a kind of electronics industry
The mineralized nitrogen of system using oxidizer containing chlorine is that nitrogen removes in this method, leads to nitrogen by the method for nitrogen waste water fully recovering
Resource direct losses, and remaining solution is reacted in neutral conditions by addition soluble calcium salt and generates calcirm-fluoride, in system
Remaining chloride ion not only influences the purity of calcirm-fluoride, and remaining system is directly entered water treatment system, causes largely to provide
The waste in source.
In order to realize the recycling of resource, and technological operation is simple, realizes the maximization recycling of fluorine nitrogen resource
It utilizes, reduces the processing cost of waste liquid, designing one kind is very important for fluorine-containing containing ammonia nitrogen recycling hydrofluoric acid and ammonium salt.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, this application provides it is a kind of using it is fluorine-containing containing ammonia nitrogen prepare hydrofluoric acid and
The method of ammonium salt.This process conditions is simple, and the maximization for realizing fluorine nitrogen resource recycles, and reduces being processed into for waste liquid
This, realizes biggish economic benefit and environmental benefit.
Technical scheme is as follows:
A method of hydrofluoric acid and ammonium salt being prepared using fluorine-containing nitrogen-containing wastewater, described method includes following steps:
(1) using the COD in electrocatalytic oxidation method removal waste water, solution A is obtained；
(2) pH value of acquired solution A in step (1) is adjusted to alkalinity, gained alkaline solution is distinguished after passing through deamination film
Solution B and solution C are obtained, solution B obtains solution D after peracid solutions absorb；
(3) in regulating step (2) acquired solution D pH, be concentrated to get ammonium salt；
(4) acquired solution C obtains hydrofluoric acid solution and sodium hydroxide after Bipolar Membrane in step (2) or potassium hydroxide is molten
PH value of solution is adjusted in liquid, sodium hydroxide or potassium hydroxide solution reuse to step (2).
In electrocatalytic oxidation method described in step (1), oxidant is hydrogen peroxide, oxygen or ozone；Oxidizer is
The 0.1%~0.2% of wastewater quality；Reaction time is 1~2h.
Deamination film described in step (2) is the hollow-fibre membrane that interior membrane material is PTFE, shell PP, PE or UPVC material
Matter.
Deamination process described in step (2) is as follows: the heat preheating that waste water is released after peracid solutions and ammonia reaction
Entering doughnut internal layer afterwards, the ammonia generated in solution enters doughnut outer layer, and the gas of outer layer is absorbed using acid solution,
Promote reaction constantly to carry out to the right by controlling the pH value and temperature of waste water according to the equilibrium principle of ammonia nitrogen in water, release
More ammonias, ammonia-nitrogen balance principle are as follows: NH4 ++OH-NH3↑+H2O。
The pH of solution A described in step (2) is adjusted to 7~8 with piece alkali, liquid alkaline or potassium hydroxide；The acid solution is sulphur
The aqueous solution of acid and phosphoric acid, concentration are 10wt%~20wt%.
PH value of solution, which is adjusted, using ammonium carbonate or ammonium hydrogen carbonate in step (3) is adjusted to 4~6.
The pole plate of Bipolar Membrane described in step (4) is the production of teflon-coating stainless steel plate.
The present invention is beneficial to be had the technical effect that
In order to realize the abundant recycling of resource, the applicant is by a large amount of experiment, a kind of utilization for designing
The fluorine-containing method for preparing hydrofluoric acid and ammonium salt containing ammonia nitrogen.This process conditions is simple, by fluorine-containing solution and contains first with deamination film
Ammonium salt solution separation, obtains ammonium salt containing ammonium salt solution, it is molten that fluorine-containing solution obtains hydrofluoric acid after Bipolar Membrane after peracid solutions absorb
Liquid and sodium hydroxide solution or potassium hydroxide solution, sodium hydroxide solution or potassium hydroxide solution can be with reuse, abundant recovery bodies
Fluorine element and nitrogen in system, may finally obtain hydrofluoric acid and ammonium salt product, the sodium hydroxide furthermore obtained by processing
Solution or potassium hydroxide solution can recycle use, and the maximization for realizing fluorine nitrogen resource recycles, and reduce the place of waste liquid
Cost is managed, biggish economic benefit and environmental benefit are realized.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is specifically described.
Embodiment 1
The fluorine-containing nitrogen-containing wastewater 200mL (fluorine content 10g/L, ammonia nitrogen 20g/L) for taking certain electronics producer production line, will be fluorine-containing
Nitrogen-containing wastewater is put into electrocatalysis device, and 0.1% hydrogen peroxide is added, and after reacting 1h, piece alkali is added and adjusts pH value of solution=7
Afterwards, it is passed through deamination film after preheating, after 10% sulfuric acid absorption of ammonia solution, adjusts pH value of solution=4, warp with 10g ammonium hydrogen carbonate
After pervaporation device, 23g ammonium sulfate crystallization is obtained；Fluorine-containing solution obtains the hydrofluoric acid and hydroxide of 8.38g25% by Bipolar Membrane
Sodium solution, sodium hydroxide solution are back in system.
Embodiment 2
The fluorine-containing nitrogen-containing wastewater 200mL (fluorine content 12g/L, ammonia nitrogen 18g/L) for taking certain electronics producer production line, will be fluorine-containing
Nitrogen-containing wastewater is put into electrocatalysis device, and 0.15% ozone is added, after reacting 1.5h, addition liquid alkaline adjusting pH value of solution=
It is passed through deamination film after 7.5, after preheating, after being absorbed containing ammonia solution with 15% phosphoric acid, adjusts pH value of solution=5 with 4.25g ammonium carbonate,
After evaporator, 33.12g biphosphate crystalline ammonium is obtained；Fluorine-containing solution obtains the hydrofluoric acid of 9.31g27% by Bipolar Membrane
And sodium hydroxide solution, sodium hydroxide solution are back in system.
Embodiment 3
The fluorine-containing nitrogen-containing wastewater 200mL (fluorine content 15g/L, ammonia nitrogen 15g/L) for taking certain electronics producer production line, will be fluorine-containing
Nitrogen-containing wastewater is put into electrocatalysis device, and 0.2% oxygen is added, and after reacting 2h, potassium hydroxide is added and adjusts pH value of solution=8
Afterwards, it is passed through deamination film after preheating, after 20% sulfuric acid absorption of ammonia solution, adjusts pH value of solution=6 with 8g ammonium hydrogen carbonate, passes through
After evaporator, 17.75g ammonium sulfate crystallization is obtained；Fluorine-containing solution obtains the hydrofluoric acid and hydrogen-oxygen of 11.21g28% by Bipolar Membrane
Change potassium solution, potassium hydroxide solution is back in system.
Detect example:
The hydrofluoric acid that Examples 1 to 3 recycles, ammonium sulfate and biphosphate ammonium concentration or purity is related to the rate of recovery refers to
Mark is as shown in table 1.Purity in table 1 is mass fraction.
Table 1
It can see from the data of table 1, the fluohydric acid content that the present invention recycles is 25% or more, and the rate of recovery is 99%
More than, the ammonium sulfate purity recycled is in 98% or more and ammonium dihydrogen phosphate purity 99% or more.
Claims (7)
1. a kind of method for preparing hydrofluoric acid and ammonium salt using fluorine-containing nitrogen-containing wastewater, which is characterized in that the method includes such as
Lower step:
(1) using the COD in electrocatalytic oxidation method removal waste water, solution A is obtained；
(2) pH value of acquired solution A in step (1) is adjusted to alkalinity, gained alkaline solution respectively obtains after passing through deamination film
Solution B and solution C, solution B obtain solution D after peracid solutions absorb；
(3) in regulating step (2) acquired solution D pH, be concentrated to get ammonium salt；
(4) acquired solution C obtains hydrofluoric acid solution and sodium hydroxide or potassium hydroxide solution after Bipolar Membrane in step (2),
PH value of solution is adjusted in sodium hydroxide or potassium hydroxide solution reuse to step (2).
2. the method according to claim 1, wherein in electrocatalytic oxidation method described in step (1), oxidant
For hydrogen peroxide, oxygen or ozone；Oxidizer is the 0.1%~0.2% of wastewater quality；Reaction time is 1~2h.
3. the method according to claim 1, wherein it is PTFE that deamination film described in step (2), which is interior membrane material,
Hollow-fibre membrane, shell PP, PE or UPVC material.
4. the method according to claim 1, wherein deamination process described in step (2) is as follows: waste water passes through
Enter doughnut internal layer after the heat preheating released after acid solution and ammonia reaction, the ammonia generated in solution enters hollow fibre
Tie up outer layer, the gas of outer layer absorbed using acid solution, according to the equilibrium principle of ammonia nitrogen in water, by control waste water pH value and
Temperature promotes reaction constantly to carry out to the right, releases more ammonias, ammonia-nitrogen balance principle is as follows: NH4 ++OH-→NH3↑+H2O。
5. the method according to claim 1, wherein the pH piece alkali of solution A described in step (2), liquid alkaline or
Potassium hydroxide is adjusted to 7~8；The acid solution is the aqueous solution of sulfuric acid and phosphoric acid, and concentration is 10wt%~20wt%.
6. the method according to claim 1, wherein molten using ammonium carbonate or ammonium hydrogen carbonate adjusting in step (3)
Liquid pH is adjusted to 4~6.
7. the method according to claim 1, wherein the pole plate of Bipolar Membrane described in step (4) is polytetrafluoroethyl-ne
The stainless steel plate production of alkene coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489802.6A CN110092355A (en) | 2019-06-06 | 2019-06-06 | A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910489802.6A CN110092355A (en) | 2019-06-06 | 2019-06-06 | A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110092355A true CN110092355A (en) | 2019-08-06 |
Family
ID=67450353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910489802.6A Pending CN110092355A (en) | 2019-06-06 | 2019-06-06 | A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110092355A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009125639A (en) * | 2007-11-21 | 2009-06-11 | Hitachi Plant Technologies Ltd | Method and apparatus for fluorine-containing wastewater treatment |
| CN102126799A (en) * | 2011-01-17 | 2011-07-20 | 无锡德宝水务投资有限公司 | Method for treating fluorine-containing and ammonia nitrogen-containing waste water in electronic industry |
| CN104326442A (en) * | 2014-11-13 | 2015-02-04 | 北京赛科康仑环保科技有限公司 | Recycling separation method and system for HF and H2SO4 mixed acid |
| CN105384316A (en) * | 2015-12-18 | 2016-03-09 | 无锡德宝水务投资有限公司 | Electronic industrial fluoride, ammonia and nitrogen-containing wastewater treatment method |
| CN107043185A (en) * | 2017-06-19 | 2017-08-15 | 深圳慧欣环境技术有限公司 | A kind of circuitboard etching waste liquid ammonia nitrogen processing method for resource recovery and system |
| CN108975586A (en) * | 2018-07-16 | 2018-12-11 | 肖平 | Fluorine-containing in tantalum and niobium hydrometallurgy, nitrogen-containing wastewater recovery and treatment method |
| CN109516631A (en) * | 2019-01-28 | 2019-03-26 | 湖南工业大学 | A kind of processing method of fluorine-containing ammonia nitrogen waste water |
-
2019
- 2019-06-06 CN CN201910489802.6A patent/CN110092355A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009125639A (en) * | 2007-11-21 | 2009-06-11 | Hitachi Plant Technologies Ltd | Method and apparatus for fluorine-containing wastewater treatment |
| CN102126799A (en) * | 2011-01-17 | 2011-07-20 | 无锡德宝水务投资有限公司 | Method for treating fluorine-containing and ammonia nitrogen-containing waste water in electronic industry |
| CN104326442A (en) * | 2014-11-13 | 2015-02-04 | 北京赛科康仑环保科技有限公司 | Recycling separation method and system for HF and H2SO4 mixed acid |
| CN105384316A (en) * | 2015-12-18 | 2016-03-09 | 无锡德宝水务投资有限公司 | Electronic industrial fluoride, ammonia and nitrogen-containing wastewater treatment method |
| CN107043185A (en) * | 2017-06-19 | 2017-08-15 | 深圳慧欣环境技术有限公司 | A kind of circuitboard etching waste liquid ammonia nitrogen processing method for resource recovery and system |
| CN108975586A (en) * | 2018-07-16 | 2018-12-11 | 肖平 | Fluorine-containing in tantalum and niobium hydrometallurgy, nitrogen-containing wastewater recovery and treatment method |
| CN109516631A (en) * | 2019-01-28 | 2019-03-26 | 湖南工业大学 | A kind of processing method of fluorine-containing ammonia nitrogen waste water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102633398A (en) | Method for recovering organic effluent brine | |
| CN108689522A (en) | A kind of Treatment and recovery recovery method of photovoltaic industry nitration mixture waste water | |
| CN109319976B (en) | Process for treating ammonia nitrogen wastewater by adopting gaseous membrane | |
| CN1328176C (en) | New comprehensive utilization method of ADC foaming agent condensed mother liquor | |
| CN100494097C (en) | Method for treating wastewater from production of chlorated fulminuric acid | |
| KR101269948B1 (en) | Apparatus and method for nitrogen wastewater treatment | |
| CN105712520B (en) | A kind of processing method of epoxychloropropane waste water | |
| CN105177584A (en) | Acidic waste etching solution cyclic regeneration system with regenerated liquid treatment function | |
| CN111285331A (en) | Method for preparing hydrobromic acid and sodium bromide from bromine-containing brine in short process | |
| CN105271310A (en) | Chlorination-process titanium-white high-salt wastewater comprehensive utilization method | |
| US5294307A (en) | Integrated process for the production of alkali and alkaline earth metal chlorates and chlorine dioxide | |
| CN106591873A (en) | Treating and recycling method of sodium hypochlorite-containing waste liquid | |
| CN105712452B (en) | A method of calcium ion in removal epoxychloropropane waste water | |
| CN113913852A (en) | Method for extracting sodium bromide from brine | |
| JPH033747B2 (en) | ||
| CN103866344A (en) | Method for preparing nitric acid through electrolysis | |
| CN110092355A (en) | A method of hydrofluoric acid and ammonium salt are prepared using fluorine-containing nitrogen-containing wastewater | |
| CN219409508U (en) | High-salt film concentrated water treatment equipment | |
| CN108083365A (en) | A kind of processing method of carbendazim wastewater | |
| CN112281180A (en) | Method for preparing chlorine by electrolyzing concentrated seawater through bipolar membrane | |
| CN108505060A (en) | Method is prepared in situ in a kind of salinity control type hypochlorite | |
| CN105084627A (en) | Acrylonitrile ammonium sulphate waste water processing method | |
| CN114875428A (en) | Method for extracting bromine and producing sodium bromide from potassium-extracting old bittern | |
| CN104451688B (en) | A kind of method of electrolytic regeneration Ni from waste etching FeCl 3 solution containing co-production iron oxide yellow | |
| CN109534361B (en) | Method for purifying sodium chloride from byproduct mixed salt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190806 |
|
| RJ01 | Rejection of invention patent application after publication |