CN108164042A - A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource - Google Patents
A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource Download PDFInfo
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
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- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/022—Preparation of aqueous ammonia solutions, i.e. ammonia water
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- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/16—Halides of ammonium
- C01C1/164—Ammonium chloride
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- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
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- C01C1/24—Sulfates of ammonium
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- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
- C01F7/54—Double compounds containing both aluminium and alkali metals or alkaline-earth metals
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- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- 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
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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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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Abstract
The invention discloses a kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource, the ammonia nitrogen waste water with high salt mainly to include the component of following mass percentage：1) 5%~20% ammonium chloride or/and ammonium sulfate；2) 10%~25% sodium chloride or/and sodium sulphate；The ammonium chloride or/and ammonium sulfate component of the high concentration saliferous ammonia nitrogen waste water add in medicament low-temperature evaporation recycling ammonium hydroxide；Ice crystal and by-product is obtained by the reaction with ammonium aluminum fluoride in sodium chloride or/and sodium sulphate component in the high concentration saliferous ammonia nitrogen waste water；The by-product is ammonium chloride or/and ammonium sulfate.The present invention realizes useless water reuse by fluorine silicon resource, turns waste into wealth, improve economic benefit to ammonia-nitrogen sewage treatment effeciency with high salt height；Recycling by-product energy cycling and reutilization, quantity of wastewater effluent is greatly reduced, close to zero-emission.
Description
Technical field
The present invention relates to technical field of waste water processing, a kind of ammonia nitrogen waste water processing with high salt and fluorine silicon resource are particularly related to
Method.
Background technology
High concentration saliferous ammonia nitrogen waste water is common industrial wastewater, and the prior art is difficult processing.As the production of AC foaming agents is big
The high concentration saliferous ammonia nitrogen waste water of amount, main component include sodium carbonate, ammonium chloride or/and ammonium sulfate, sodium chloride or/and sulfuric acid
Sodium.AC foaming agent waste water is a kind of NH of high concentration3- N, the inorganic salts of high concentration, high concentration CODcr waste water.It is main
Harm has：(1) body eutrophication phenomenon is caused；(2) reduction-state (NH3-N、NO2- N) it is discharged into water body, it is consumed due to nitrification
A large amount of oxygen in water body are removed, cause water body smelly；(4) to the toxic action of human body and biology；(5) high concentration inorganic salts can influence water
The growth of biology.In water free ammonia (FA) more than 1mg/L when can make aquatile with reference to oxygen ability decline, cause when serious
It is dead.Nitrite anions and amine effect generation nitrosamine, have carcinogenic, teratogenesis.If people drinks NO2 -More than 10mg/L's
Water can cause methemoglobinemia.The harm of high concentration saliferous ammonia nitrogen waste water is larger and is difficult to handle and regeneration, at present very
Multiple enterprises are all by its direct emission.With the reinforcement of environmentally friendly supervision, many enterprises face suspending operations for consolidation.
CN 106745951A announce a kind of production wastewater treatment method of ADC foaming agents, but this method is to high strength ammonia
Nitrogen and COD processing, but the inorganic salts of high concentration and untreated and recycling.
CN 104591456A disclose a kind of processing method of ammonia nitrogen waste water with high salt, this method using adjust acid+membrane distillation+
The technological process just permeated.The present invention is directed to the water quality characteristics of waste water, with reference to the ammonia nitrogen in ammonia nitrogen waste water under low pH mostly with NH4 +
Existing characteristic, first using low-kappa number ammonia nitrogen waste water with high salt is adjusted, secondly using after film distillation technology concentration tune acid
Ammonia nitrogen waste water with high salt, later using membrane distillation concentrated water with high salt as the driving liquid just permeated, by just permeating feeding liquid side raw water
It constantly concentrates to dilute membrane distillation concentrated water, when membrane distillation concentrated water is diluted to certain concentration, then continue back to membrane distillation unit
Carry out concentration.It is recycled with this, while ammonia nitrogen waste water depth concentration with high salt, can not only obtain lot of pure
Water also solves the membrane distillation concentrated water generated during ammonia nitrogen waste water processing with high salt and is difficult to process problem, improves to greatest extent useless
The water rate of recovery has important environmental benefit.But this method technics comparing is complicated, and processing cost is higher, and salt and unrecovered profit again
With.
Invention content
In view of this, it is an object of the invention to propose a kind of method of ammonia nitrogen waste water processing with high salt and fluorine silicon resource,
The method of the present invention realizes useless water reuse by fluorine silicon resource, turns waste into wealth, improve to sewage treating efficiency height
Economic benefit；Recycling by-product energy cycling and reutilization, quantity of wastewater effluent is greatly reduced, close to zero-emission.
Based on above-mentioned purpose, the method for a kind of ammonia nitrogen waste water processing with high salt provided by the invention and fluorine silicon resource is described
Ammonia nitrogen waste water with high salt mainly includes the component of following mass percentage：1) 5%~20% ammonium chloride or/and ammonium sulfate；2)
10%~25% sodium chloride or/and sodium sulphate；The ammonium chloride or/and ammonium sulfate component of the high concentration saliferous ammonia nitrogen waste water add in
Medicament low-temperature evaporation recycles ammonium hydroxide；Sodium chloride or/and sodium sulphate component and fluoaluminic acid in the high concentration saliferous ammonia nitrogen waste water
Ice crystal and by-product is obtained by the reaction in ammonium；The by-product is ammonium chloride or/and ammonium sulfate.
In some embodiments of the invention, include the following steps：
(1) NH_3-N treating：It is reacted medicament is added in ammonia nitrogen waste water with high salt, recycles the ammonium hydroxide that the reaction generates；
(2) COD processing：Oxidant is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), is carried out
Oxidation processes, the waste water for the COD that is removed；
(3) fluorine silicon resource：The waste water of COD and ammonium aluminum fluoride hybrid reaction will be removed, obtain ice crystal and by-product；Institute
By-product is stated as ammonium chloride or/and ammonium sulfate.
In some embodiments of the invention, the ammonia nitrogen waste water with high salt includes the component of following mass percentage：
10%~18% ammonium chloride and 10%~18% sodium chloride；Or 10%~18% ammonium sulfate and 10%~18% sodium sulphate.
In some embodiments of the invention, the ammonia nitrogen waste water with high salt includes the component of following mass percentage：
10%~15% ammonium chloride and 10%~15% sodium chloride；Or 10%~15% ammonium sulfate and 10%~15% sodium sulphate.
In some embodiments of the invention, the ammonium aluminum fluoride selects discarded ammonium aluminum fluoride slag.
In some embodiments of the invention, in step (1), the medicament is selected from calcium hydroxide, sodium hydroxide and electricity
At least one of stone.
In some embodiments of the invention, when the medicament is selected from sodium hydroxide, sodium hydroxide and the ammonia with high salt
Ammonium chloride or/and ammonium sulfate reaction in nitrogen waste water, side product chlorinated sodium or/and sodium sulphate are returned in ammonia nitrogen waste water with high salt, and
It is reacted into fluorine silicon resource step.
In some embodiments of the invention, it is further included the ammonia nitrogen waste water pretreatment with high salt before step (1)
Step；
The step of ammonia nitrogen waste water with high salt pretreatment is：The ammonia nitrogen waste water with high salt is cooled down, then pressure filtration obtains
It is recycled to biruea solid, and by the biruea solid；
In step (2), the oxidant is selected from least one of hydrogen peroxide, chlorine, sodium hypochlorite and calcium hypochlorite.
In some embodiments of the invention, it is further included in fluorine silicon resource step and the by-product is added to step
(1) the step of ammonium hydroxide, is recycled in reaction in.
In some embodiments of the invention, the mass ratio of the ammonia nitrogen waste water with high salt and the ammonium aluminum fluoride is 1：0.03
~0.28.
In the present invention, ammonia nitrogen waste water with high salt is high concentration saliferous ammonia nitrogen waste water, such as AC foaming agent waste water.
From the above it can be seen that the method for ammonia nitrogen waste water processing with high salt provided by the invention and fluorine silicon resource, tool
There is following advantageous effect：
The present invention realizes useless water reuse by fluorine silicon resource, turns waste into wealth, improve to sewage treating efficiency height
Economic benefit；Recycling by-product energy cycling and reutilization, quantity of wastewater effluent is greatly reduced, close to zero-emission.
Description of the drawings
Fig. 1 is the embodiment of the present invention 5 and the technology path of the processing of 6 ammonia nitrogen waste water with high salt of embodiment and fluorine silicon resource.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Embodiment 1:A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 5%~20% ammonium chloride；
2) 10%~25% sodium chloride.
The method of ammonia nitrogen waste water with high salt processing and fluorine silicon resource in the present embodiment, includes the following steps：
(1) NH_3-N treating：It is reacted sodium hydroxide is added in ammonia nitrogen waste water with high salt, recycles the ammonia that the reaction generates
Water；In this step, the ammonium chloride component in ammonia nitrogen waste water with high salt reacts generation ammonium hydroxide and side product chlorinated sodium with sodium hydroxide,
Ammonium hydroxide is recycled through low-temperature evaporation, and side product chlorinated sodium is returned in ammonia nitrogen waste water with high salt, and enter step in (3) with fluoaluminic acid
Ammonium reacts.The chemical equation that the step is related to is：
NH4Cl+NaOH=NaCl+NH3·H2O
(2) COD processing：Hydrogen peroxide is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), is aoxidized
Processing, the waste water for the COD that is removed；In this step, hydrogen peroxide can the oxidation operation in ammonia nitrogen waste water with high salt, so as to
Be removed the waste water of COD；
(3) fluorine silicon resource：Discarded ammonium aluminum fluoride slag is added in the waste water for removing COD, and (ammonia nitrogen waste water with high salt is with giving up
The mass ratio of ammonium aluminum fluoride slag abandoned is 1：0.03) ice crystal (hexafluoro sodium aluminate), is obtained with sodium chloride component reaction therein
And by-product ammonium chloride.The chemical equation that the step is related to is：
3NaCl+(NH4)3AlF6=Na3AlF6↓+3NH4Cl
Sodium hydroxide low-temperature evaporation recycling ammonium hydroxide is further added in by-product ammonium chloride return to step (1).
Embodiment 2：A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 10%~15% chlorination
Ammonium；2) 10%~15% sodium chloride.
The method of ammonia nitrogen waste water with high salt processing and fluorine silicon resource in the present embodiment, includes the following steps：
(1) NH_3-N treating：It is reacted sodium hydroxide is added in ammonia nitrogen waste water with high salt, recycles the ammonia that the reaction generates
Water；In this step, the ammonium chloride component in ammonia nitrogen waste water with high salt reacts generation ammonium hydroxide and side product chlorinated sodium with sodium hydroxide,
Ammonium hydroxide is recycled through low-temperature evaporation, and side product chlorinated sodium is returned in ammonia nitrogen waste water with high salt, and enter step in (3) with fluoaluminic acid
Ammonium reacts.The chemical equation that the step is related to is：
NH4Cl+NaOH=NaCl+NH3·H2O
(2) COD processing：Hydrogen peroxide is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), is aoxidized
Processing, the waste water for the COD that is removed；In this step, hydrogen peroxide can the oxidation operation in ammonia nitrogen waste water with high salt, so as to
Be removed the waste water of COD；
(3) fluorine silicon resource：Discarded ammonium aluminum fluoride slag is added in the waste water for removing COD, and (ammonia nitrogen waste water with high salt is with giving up
The mass ratio of ammonium aluminum fluoride slag abandoned is 1：0.28) ice crystal (hexafluoro sodium aluminate), is obtained with sodium chloride component reaction therein
And by-product ammonium chloride.The chemical equation that the step is related to is：
3NaCl+(NH4)3AlF6=Na3AlF6↓+3NH4Cl
Sodium hydroxide low-temperature evaporation recycling ammonium hydroxide is further added in by-product ammonium chloride return to step (1).
Embodiment 3：A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 5%~20% ammonium sulfate；2)
10%~25% sodium sulphate.
The method of ammonia nitrogen waste water with high salt processing and fluorine silicon resource in the present embodiment, includes the following steps：
(1) NH_3-N treating：It is reacted calcium hydroxide is added in ammonia nitrogen waste water with high salt, recycles the ammonia that the reaction generates
Water；In this step, the ammonium sulfate component in ammonia nitrogen waste water with high salt and calcium hydroxide reaction generation ammonium hydroxide and byproduct calcium sulfate,
Ammonium hydroxide is recycled through low-temperature evaporation.The chemical equation that the step is related to is：
(NH4)2SO4+Ca(OH)2=CaSO4+2NH3·H2O
(2) COD processing：Sodium hypochlorite is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), carries out oxygen
Change is handled, the waste water for the COD that is removed；In this step, sodium hypochlorite can the oxidation operation in ammonia nitrogen waste water with high salt,
So as to the waste water for the COD that is removed；
(3) fluorine silicon resource：Discarded ammonium aluminum fluoride slag is added in the waste water for removing COD, and (ammonia nitrogen waste water with high salt is with giving up
The mass ratio of ammonium aluminum fluoride slag abandoned is 1：0.12) ice crystal (hexafluoro sodium aluminate), is obtained with sodium sulphate component reaction therein
With by-product ammonium sulfate.The chemical equation that the step is related to is：
3Na2SO4+2(NH4)3AlF6=2Na3AlF6↓+3(NH4)2SO4
Calcium hydroxide low-temperature evaporation recycling ammonium hydroxide is further added in by-product ammonium sulfate return to step (1).
Embodiment 4：A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 10%~15% ammonium sulfate；
2) 10%~15% sodium sulphate.
The method of ammonia nitrogen waste water with high salt processing and fluorine silicon resource in the present embodiment, includes the following steps：
(1) NH_3-N treating：Calcium carbide (CaC will be added in ammonia nitrogen waste water with high salt2) reacted, recycle what the reaction generated
Ammonium hydroxide；In this step, the ammonium sulfate component in ammonia nitrogen waste water with high salt reacts generation ammonium hydroxide and byproduct calcium sulfate, ammonia with calcium carbide
Water is recycled through low-temperature evaporation.The chemical equation that the step is related to is：
CaC2+2H2O+(NH4)2SO4=C2H2↑+CaSO4+2NH3·H2O
(2) COD processing：Calcium hypochlorite is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), carries out oxygen
Change is handled, the waste water for the COD that is removed；In this step, calcium hypochlorite can the oxidation operation in ammonia nitrogen waste water with high salt,
So as to the waste water for the COD that is removed；
(3) fluorine silicon resource：Discarded ammonium aluminum fluoride slag (ammonia nitrogen with high salt is added in the waste water of COD and sodium carbonate is removed
The mass ratio of waste water and discarded ammonium aluminum fluoride slag is 1：0.25), ice crystal (hexafluoro is obtained with sodium sulphate component reaction therein
Sodium aluminate) and by-product ammonium sulfate.The chemical equation that the step is related to is：
3Na2SO4+(NH4)3AlF6=2Na3AlF6↓+3(NH4)2SO4
Calcium carbide low-temperature evaporation recycling ammonium hydroxide is further added in by-product ammonium sulfate return to step (1).
Embodiment 5：A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 5%~20% ammonium chloride；
2) 10%~25% sodium chloride.
According to technology path as shown in Figure 1, the method for ammonia nitrogen waste water processing with high salt and fluorine silicon resource, including following step
Suddenly：
(1) Wastewater Pretreatment：Waste water is cooled down, pressure filtration, obtain biruea ((NH2CONH)2) solid, then dry,
Recycling；
(2) NH_3-N treating：Enter ammonia recovery system after pretreated waste water supply sodium hydroxide, the ammonia nitrogen warp in waste water
Ammonium hydroxide is recycled after low-temperature evaporation；Side product chlorinated sodium returns to pretreated waste water；
(3) COD processing：It removes the waste water after ammonia nitrogen and adds in hydrogen peroxide, carry out oxidation processes, the waste water for the COD that is removed；
(4) fluorine silicon resource：Sodium chloride component in the waste water for removing COD is reacted to production ice crystal with ammonium aluminum fluoride
(hexafluoro sodium aluminate), wherein the mass ratio of ammonia nitrogen waste water with high salt and discarded ammonium aluminum fluoride slag is 1：0.08, by-product ammonium chloride
Return to step further recycles ammonium hydroxide in (2).
Embodiment 6：A kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource
Ammonia nitrogen waste water with high salt includes the component of following mass percentage in the present embodiment：1) 5%~20% ammonium sulfate；2)
10%~25% sodium sulphate.
According to technology path as shown in Figure 1, the method for ammonia nitrogen waste water processing with high salt and fluorine silicon resource, including following step
Suddenly：
(1) Wastewater Pretreatment：Waste water is cooled down, pressure filtration, obtain biruea ((NH2CONH)2) solid, then dry,
Recycling；
(2) NH_3-N treating：Enter ammonia recovery system after pretreated waste water supply calcium hydroxide, the ammonia nitrogen warp in waste water
Ammonium hydroxide is recycled after low-temperature evaporation；Byproduct calcium sulfate returns to pretreated waste water；
(3) COD processing：It removes the waste water after ammonia nitrogen and adds in sodium hypochlorite, carry out oxidation processes, the COD's that is removed is useless
Water；
(4) fluorine silicon resource：Sodium chloride component in the waste water for removing COD and sodium carbonate is reacted into production with ammonium aluminum fluoride
Ice crystal (hexafluoro sodium aluminate), wherein the mass ratio of ammonia nitrogen waste water with high salt and discarded ammonium aluminum fluoride slag is 1：0.15, by-product
Ammonium sulfate return to step further recycles ammonium hydroxide in (2).
The yield of ice crystal being prepared by the method for the processing of embodiment 1-6 ammonia nitrogen waste waters with high salt and fluorine silicon resource is
80%~95% (based on fluoaluminic acid ammonia).The quality measurements of ice crystal are as shown in table 1, according to GB/T 4291-1999, symbol
Close primes requirement.Simultaneously using embodiment 1-6 ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource, ADC wastewater treatments
Effect is as shown in table 2.
1 fluorine silicon resource metaplasia of table produces ice crystal inspection result
2 ammonia nitrogen ADC water treatment effects with high salt of table
From the above it can be seen that the method for ammonia nitrogen waste water processing with high salt provided by the invention and fluorine silicon resource, tool
There is following advantageous effect：Sewage treating efficiency is high, realizes useless water reuse by fluorine silicon resource, turns waste into wealth, and improves
Economic benefit；Recycling by-product energy cycling and reutilization, quantity of wastewater effluent is greatly reduced, close to zero-emission.
The embodiment of the present invention be intended to cover fall within the broad range of appended claims it is all it is such replace,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of ammonia nitrogen waste water processing with high salt and the method for fluorine silicon resource, which is characterized in that the ammonia nitrogen waste water with high salt is main
Include the component of following mass percentage：1) 5%~20% ammonium chloride or/and ammonium sulfate；2) 10%~25% sodium chloride
Or/and sodium sulphate；The ammonium chloride or/and ammonium sulfate component of the high concentration saliferous ammonia nitrogen waste water add in the recycling of medicament low-temperature evaporation
Ammonium hydroxide；Ice crystal is obtained by the reaction with ammonium aluminum fluoride in sodium chloride or/and sodium sulphate component in the high concentration saliferous ammonia nitrogen waste water
And by-product；The by-product is ammonium chloride or/and ammonium sulfate.
2. according to the method described in claim 1, it is characterised in that it includes following steps：
(1) NH_3-N treating：It is reacted medicament is added in ammonia nitrogen waste water with high salt, recycles the ammonium hydroxide that the reaction generates；
(2) COD processing：Oxidant is added in the ammonia nitrogen waste water with high salt of removal ammonia nitrogen into above-mentioned steps (1), is aoxidized
Processing, the waste water for the COD that is removed；
(3) fluorine silicon resource：The waste water of COD and ammonium aluminum fluoride hybrid reaction will be removed, obtain ice crystal and by-product；The pair
Product is ammonium chloride or/and ammonium sulfate.
3. according to the method described in claim 1, it is characterized in that, the ammonia nitrogen waste water with high salt includes following mass percentage
Component：10%~18% ammonium chloride and 10%~18% sodium chloride；Or 10%~18% ammonium sulfate and 10%~18% sulfuric acid
Sodium.
4. according to the method described in claim 1, it is characterized in that, the ammonia nitrogen waste water with high salt includes following mass percentage
Component：10%~15% ammonium chloride and 10%~15% sodium chloride；Or 10%~15% ammonium sulfate and 10%~15% sulfuric acid
Sodium.
5. according to the method described in claim 1, it is characterized in that, the ammonium aluminum fluoride selects discarded ammonium aluminum fluoride slag.
6. according to the method described in claim 2, it is characterized in that, in step (1), the medicament is selected from calcium hydroxide, hydrogen
At least one of sodium oxide molybdena and calcium carbide.
7. according to the method described in claim 6, it is characterized in that, when the medicament be selected from sodium hydroxide when, sodium hydroxide with
Ammonium chloride or/and ammonium sulfate reaction in the ammonia nitrogen waste water with high salt, side product chlorinated sodium or/and sodium sulphate return to ammonia nitrogen with high salt
In waste water, and enter in fluorine silicon resource step and reacted.
8. according to the method described in claim 2, the ammonia nitrogen with high salt is given up it is characterized in that, being further included before step (1)
The step of water pretreatment；
The step of ammonia nitrogen waste water with high salt pretreatment is：The ammonia nitrogen waste water with high salt is cooled down, then pressure filtration is joined
Two urea solids, and the biruea solid is recycled；
In step (2), the oxidant is selected from least one of hydrogen peroxide, chlorine, sodium hypochlorite and calcium hypochlorite.
9. according to the method described in claim 2, the by-product is added it is characterized in that, being further included in fluorine silicon resource step
Enter the step of ammonium hydroxide is recycled in reaction into step (1).
10. the according to the method described in claim 2, it is characterized in that, matter of the ammonia nitrogen waste water with high salt and the ammonium aluminum fluoride
Amount is than being 1：0.03~0.28.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975586A (en) * | 2018-07-16 | 2018-12-11 | 肖平 | Fluorine-containing in tantalum and niobium hydrometallurgy, nitrogen-containing wastewater recovery and treatment method |
| CN110092401A (en) * | 2019-06-06 | 2019-08-06 | 盛隆资源再生（无锡）有限公司 | A method of calcirm-fluoride and ammonium sulfate are prepared using fluorine-containing nitrogen-containing wastewater |
| CN114804474A (en) * | 2022-03-10 | 2022-07-29 | 金川集团股份有限公司 | Method for removing ammonia nitrogen from hydrazine hydrate reduced liquid |
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