CN209619123U - A kind of system handling high ammonia-nitrogen wastewater - Google Patents
A kind of system handling high ammonia-nitrogen wastewater Download PDFInfo
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- CN209619123U CN209619123U CN201920011606.3U CN201920011606U CN209619123U CN 209619123 U CN209619123 U CN 209619123U CN 201920011606 U CN201920011606 U CN 201920011606U CN 209619123 U CN209619123 U CN 209619123U
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Abstract
The utility model discloses a kind of systems for handling high ammonia-nitrogen wastewater, including level-one dosing reaction system, second level dosing reaction system, NaClO wastewater storage tank, FeSO4Wastewater storage tank, NaOH storage tank, the feeding opening of the level-one dosing reaction system respectively with NaClO wastewater storage tank, FeSO4The water outlet of wastewater storage tank is connected to；The feeding opening of the second level dosing reaction system is connected to the medicine outlet of NaClO wastewater storage tank, NaOH storage tank respectively, and the water outlet of the level-one dosing reaction system is connected to the water inlet of second level dosing reaction system.By Tthe utility model system treated high ammonia-nitrogen wastewater, removal rate > 98.8% of ammonia nitrogen, and all kinds of by-products completely remove, it is ensured that water outlet reaches discharge standard；Tthe utility model system is easy to operate, can effectively remove high ammonia-nitrogen wastewater and all kinds of by-products, and reach various wastewater synchronization process effect.
Description
Technical field
The utility model relates to pollutant process technical fields, and in particular to a kind of system for handling high ammonia-nitrogen wastewater.
Background technique
At this stage, for the processing of the ammonia nitrogen in waste water, the method for biochemical treatment is mainly selected.This method is to utilize water
The middle nitrobacteria contained naturally, by the ammonia nitrogen (NH in water4- N) by nitrification, it is converted into nitrate anion (NO3 -), then again
It is N by reducing nitrate radical by denitrification2, to achieve the effect that ammonia nitrogen in water removal.This method is suitable for low concentration ammonia
Nitrogen waste water is therefore particularly suitable for the ammonia nitrogen removal of municipal wastewater.However, when ammonia nitrogen concentration is excessively high in waste water, nitre therein
Even death can be inactivated immediately by changing bacterium, and the removal rate straight line of ammonia nitrogen is caused to decline.Therefore, useless for industrial high ammonia nitrogen
Water needs to carry out advanced treating to it using other methods.
Currently, being mainly the following processing method for the high-COD waste water of industry water:
(1) blow-off method.This method is the main stream approach of current processing high-concentration ammonia nitrogenous wastewater.Mainly by by carrier gas
(air or vapor) is passed through in waste water, comes into full contact with gas with liquid, and makes the NH dissolved in water3Gas passes through gas-liquid circle
Face is shifted to gas phase, to achieve the purpose that remove pollutant.The ammonia nitrogen waste water that this method is suitable for high concentration is handled, and ammonia
Nitrogen concentration is bigger, and stripping efficiency is higher, while can also recycle ammonium hydroxide.But additional gas purification system is usually required, to prevent
The ammonia of stopping leak dew causes secondary pollution, simultaneously as ammonia-nitrogen desorption tower height degree is high, so that its civil engineering amount is big.Above-mentioned reason
Cause its cost of investment huge, is not suitable for small-scale processing.
(2) oxidizing process.This method is mainly the chemical agent by adding strong oxidizing property, is nontoxic by ammonium oxidation
N2, to achieve the effect that remove ammonia nitrogen.But usually require a large amount of medicament (mainly Puritabs, and use this method
When handling creek water, the mortality of the biology such as fish can be caused.Therefore, the limitation of this method is larger.
(3) the guanite precipitation method.This method is the method that another dosing removes ammonia nitrogen, mainly by adding containing Mg2+With
PO4 3-Chemical agent, generate guanite (MgNH4PO4 6H2O) the method precipitated removes the ammonia nitrogen in waste water.Compared to stripping
Method and oxidizing process, this method is substantially without secondary pollution.But its medicament price is costly, dosage is also big, and various items
Part (dosage, dosing ratio, temperature, pH etc.) bad control, therefore, it is difficult to large-scale promotions.
Utility model content
The purpose of the utility model is to overcome a kind of high ammonia-nitrogen wastewater is provided in place of the shortcomings of the prior art
System, the system use the industrial wastewater of the NaClO containing high concentration, aoxidize to ammonia nitrogen in high density.In addition, in order to improve oxidation
Efficiency, the system is also by adding industrial waste FeSO4 7H2It is acted on NaClO, generates the stronger ferric acid of oxidisability by O
Sodium (Na2FeO4), the ammonia nitrogen in waste water is further aoxidized, nontoxic N is generated2, deep to reach " treatment of wastes with processes of wastes against one another "
Degree removes the purpose of ammonia nitrogen.
To achieve the above object, the technical solution that the utility model is taken are as follows: a kind of system for handling high ammonia-nitrogen wastewater, packet
Include level-one dosing reaction system, second level dosing reaction system, NaClO wastewater storage tank, FeSO4Wastewater storage tank, NaOH storage tank, it is described
The feeding opening of level-one dosing reaction system respectively with NaClO wastewater storage tank, FeSO4The water outlet of wastewater storage tank is connected to；Described two
The feeding opening of grade dosing reaction system is connected to the medicine outlet of NaClO wastewater storage tank, NaOH storage tank respectively, and the level-one dosing is anti-
The water outlet of system and the water inlet of second level dosing reaction system is answered to be connected to.
The system of processing high ammonia-nitrogen wastewater described in the utility model, the waste water in high ammonia-nitrogen wastewater storage tank initially enter one
Grade dosing reaction system, and with simultaneously enter the system another two strands of waste water: NaClO waste water and FeSO4Waste water mix anti-
30~40min is answered, reaction equation is as follows:
2NH4 ++3ClO-=N2↑+3Cl-+2H++3H2O；
6Fe2++3ClO-+3H2O=2Fe (OH)3↓+3Cl-+4Fe3+；
Since the hypochlorite of addition has strong oxidizing property, in the process, not only the ammonia nitrogen in waste water is oxidized to nitrogen
Gas, while Fe2+It is oxidized to Fe3+.Therefore, in this process, the ammonia nitrogen of some is removed.It is reacted by level-one dosing
After processing, the removal rate ≈ 62%~66% of ammonia nitrogen.Meanwhile the Fe (OH) of generation3Also there is certain flocculation sedimentation effect, it can
The micro particulate matter of waste water is removed, has the function that purification indirectly.
In water through the system purification, also containing the ammonia nitrogen of higher concentration, in order to be completely removed, need to carry out again
Dosing.Reacted by being equipped with second level dosing, then be by with one sodium hypochlorite waste water, it is anti-with level-one dosing in addition NaOH is together
System is answered treated waste water, enters second level dosing reaction system together and carry out 45~60min of reaction, reaction equation is as follows:
2NH4 ++3ClO-=N2↑+3Cl-+2H++3H2O；
2Fe3++3ClO-+10OH-=2FeO4 2-+3Cl-+5H2O；
2FeO4 2-+2NH4 +=2Fe (OH)3↓+N2↑+2OH-；
As can be seen that in the reaction process, due to ClO-Presence, Fe3+It has been further oxided into FeO4 2-, and
FeO4 2-Oxidisability ratio ClO-Oxidisability it is stronger therefore more preferable for the removal effect of ammonia nitrogen.After second level dosing reaction,
The removal rate > 98.8% of ammonia nitrogen.
The preferred embodiment of system as the utility model processing high ammonia-nitrogen wastewater, the system also includes three-level plus
The water outlet of medicine impurity removed system, the second level medicine system is connected to the water inlet of three-level dosing reaction system, the NaOH storage
The medicine outlet of tank is connected with the feeding opening of three-level dosing impurity removed system.
The preferred embodiment of system as the utility model processing high ammonia-nitrogen wastewater, the system also includes photocatalysis
The water outlet of device, MBR system, the three-level dosing impurity removed system is connected to photocatalysis apparatus water inlet, the photocatalysis dress
The water outlet set is connected to MBR system water inlet.
After two-stage dosing reaction, overwhelming majority ammonia nitrogen therein has been degraded, but there is also mistakes in water at this time
Remaining Fe after amount dosing2+、Fe3+、ClO-And ammonia nitrogen is by ClO-And FeO4 2-The a small amount of by-product NO generated after oxidation2 -With
NO3 -, therefore, in order to remove these by-products, the utility model has increased separately three-level dosing impurity removed system, photocatalysis subsequent
Device and MBR system are carried out respectively at three-level dosing removal of impurities processing 15~20min, photocatalysis treatment 20~30min, MBR
1.5~2.5h is managed, to remove Fe respectively2+And Fe3+、ClO-And NO2 -And NO3 -.Treated, and water is unified into water storage tank out
Storage so as to subsequent outlet or is separately done him and is used.
The preferred embodiment of system as the utility model processing high ammonia-nitrogen wastewater, the system also includes sand filtration dresses
Set, the water outlet of the level-one dosing reaction system is connected to the water inlet of sand filtering device, the water outlet of the sand filtering device with
The water inlet of second level dosing reaction system is connected to.Since level-one dosing reaction precipitation capacity is big, flocculation time is long, therefore, in order to contract
Short reaction time, the utility model also increase a set of sand filtering device, 20~45min of sand filtration filtration treatment are carried out, by the Fe of generation
(OH)3Particulate matter is filtered removing.
The preferred embodiment of system as the utility model processing high ammonia-nitrogen wastewater, the function of the photocatalysis ultraviolet lamp
Rate P=1.6~2.4W, preferably 1.8W.
The preferred embodiment of system as the utility model processing high ammonia-nitrogen wastewater, the connection are to be connected using pipeline
It is logical, it is described to be equipped with control valve on the pipeline that two adjacent devices are connected to.
The utility model has the beneficial effects that: the system of processing high ammonia-nitrogen wastewater provided by the utility model, by containing
The industrial wastewater of high concentration NaClO, aoxidizes ammonia nitrogen in high density.In addition, in order to improve oxidation efficiency, utility model is also logical
It crosses and adds industrial waste FeSO4 7H2It is acted on NaClO, generates the stronger Na2Fe04 (Na of oxidisability by O2FeO4), it is right
Ammonia nitrogen in waste water is further aoxidized, and nontoxic N is generated2, to reach " treatment of wastes with processes of wastes against one another ", depth removes the mesh of ammonia nitrogen
's.By Tthe utility model system treated high ammonia-nitrogen wastewater, removal rate > 98.8% of ammonia nitrogen, and all kinds of by-products are thorough
Removal, it is ensured that water outlet reaches discharge standard；The system operatio is simple, can be effectively by high ammonia-nitrogen wastewater and all kinds of by-products
It removes, and reaches various wastewater synchronization process effect.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
In figure: 1, high ammonia-nitrogen wastewater storage tank；2, NaClO wastewater storage tank；3,FeSO4Wastewater storage tank；4, level-one dosing is reacted
System；5, sand filtering device；6, second level dosing reaction system；7, three-level dosing impurity removed system；8, NaOH storage tank；9, photocatalysis fills
It sets；10, MBR system；11, go out water storage tank；12, pipeline；13, control valve.
Specific embodiment
To better illustrate the purpose of this utility model, technical solution and advantage, below in conjunction with specific embodiment to this
Utility model is described further.
Embodiment
The utility model handles the embodiment of the system of high ammonia-nitrogen wastewater, as shown in Figure 1, the high ammonia of processing described in the present embodiment
The system of nitrogen waste water includes the high ammonia-nitrogen wastewater storage tank 1 being sequentially communicated by pipeline 12, level-one dosing reaction system 4, sand filtration dress
Set 5, second level dosing reaction system 6, three-level dosing impurity removed system 7, photocatalysis apparatus 9, MBR system 10 and water storage tank 11 out；Institute
The system of stating further includes NaClO wastewater storage tank 2, FeSO4Wastewater storage tank 3, NaOH storage tank 8.
The feeding opening of the level-one dosing reaction system 4 by pipeline 100 respectively with NaClO wastewater storage tank 2, FeSO4It is useless
The water outlet of water storage tank 3 is connected to, and medicament NaClO and FeSO is added to realize toward level-one dosing reaction system 44, the second level
The feeding opening of dosing reaction system 6 is connected to the medicine outlet of NaClO wastewater storage tank 2, NaOH storage tank 8 respectively by pipeline 100, from
And realize and medicament NaClO and NaOH is added toward second level dosing reaction system 6, the medicine outlet of the NaOH storage tank 8 also passes through pipeline
100 are connected with the feeding opening of three-level dosing impurity removed system 7, so that medicament NaOH be added toward three-level dosing impurity removed system 7.Connection
Control valve 13 is equipped on pipeline 100 between two above-mentioned adjacent devices.Sand filtering device 5, light in the utility model are urged
Makeup sets 9, MBR system 10 and is all made of prior art realization.
The system of processing high ammonia-nitrogen wastewater described in the utility model is in use, waste water in high ammonia-nitrogen wastewater storage tank 1, first
Into level-one dosing reaction system 4, and with simultaneously enter the system another two strands of waste water: NaClO waste water and FeSO4Waste water carries out
30~40min of hybrid reaction, reaction equation are as follows:
2NH4++3ClO-=N2↑+3Cl-+2H++3H2O；
6Fe2++3ClO-+3H2O=2Fe (OH)3↓+3Cl-+4Fe3+；
Since the hypochlorite of addition has strong oxidizing property, in the process, not only the ammonia nitrogen in waste water is oxidized to nitrogen
Gas, while Fe2+It is oxidized to Fe3+.Therefore, in this process, the ammonia nitrogen of some is removed.It is reacted by level-one dosing
After processing, the removal rate ≈ 62%~66% of ammonia nitrogen.Meanwhile the Fe (OH) of generation3Also there is certain flocculation sedimentation effect, it can
The micro particulate matter of waste water is removed, has the function that purification indirectly.The additional amount of the NaClO of level-one dosing reaction treatment is meter
1.2~1.6 times of the theoretical amount of calculation, FeSO47H2The additional amount of O is 1.4 times of the theoretical amount calculated.
Since level-one dosing reaction precipitation capacity is big, flocculation time is long, therefore, in order to shorten the reaction time, the utility model
Also increase a set of sand filtering device 5, sand filtration filtration treatment 30min is carried out, by the Fe (OH) of generation3Particulate matter is filtered removing.
In water through the system purification, also containing the ammonia nitrogen of higher concentration, in order to be completely removed, need to carry out dosing again.It is logical
Cross and be equipped with second level dosing and react, then be by with one sodium hypochlorite waste water, in addition NaOH is together, and the waste water after sand filtration, together
45~60min of reaction is carried out into second level dosing reaction system 6, is reacted as follows:
2NH4 ++3ClO-=N2↑+3Cl-+2H++3H2O；
2Fe3++3ClO-+10OH-=2FeO4 2-+3Cl-+5H2O；
2FeO4 2-+2NH4 +=2Fe (OH)3↓+N2↑+2OH-；
As can be seen that in the reaction system, due to ClO-Presence, Fe3+It has been further oxided into FeO4 2-, and
FeO4 2-Oxidisability ratio ClO-Oxidisability it is stronger (the reason is that, φ (FeO4 2-/Fe3+)=2.20V > φ (ClO-/Cl-)=
0.89V), therefore it is more preferable for the removal effect of ammonia nitrogen.After second level dosing reaction, the removal rate > 98.8% of ammonia nitrogen.It is described
In second level dosing reaction, the additional amount of NaClO is 1.2~1.4 times of the theoretical amount calculated, and the additional amount of NaOH is to calculate
1.3~1.5 times of theoretical amount.
After two-stage dosing reaction, overwhelming majority ammonia nitrogen therein has been degraded, but there is also mistakes in water at this time
Remaining Fe after amount dosing2+、Fe3+、ClO-And ammonia nitrogen is by ClO-And FeO4 2-The a small amount of by-product NO generated after oxidation2 -With
NO3 -, therefore, in order to remove these by-products, the utility model it is subsequent increased separately three-level dosing impurity removed system 7, light is urged
9 and MBR system 10 are set in makeup, carry out three-level dosing removal of impurities processing 15~20min, 20~30min of photocatalysis treatment respectively,
MBR handles 1.5~2.5h, to remove Fe respectively2+And Fe3+、ClO-And NO2 -And NO3 -.Treated, and water is unified into water outlet
Storage tank storage 11 so as to subsequent outlet or is separately done him and is used.In three-level dosing removal of impurities, the additional amount of NaOH can be with the theory of calculating
Dosage is equal (need to detect after second level dosing reaction to water outlet, with the remaining total Fe amount of determination)；Photocatalysis ultraviolet lamp
Power is 1.6~2.4W, the nitrobacteria that preferably 1.8W, MBR are used, for nitrification thorn bacterium (Nitrospina), nitrification coccus
(Nitrococcus) mixed bacteria.
By Tthe utility model system treated high ammonia-nitrogen wastewater, the removal rate > 98.8% of ammonia nitrogen, and all kinds of by-products
Object completely removes, it is ensured that water outlet reaches discharge standard；The utility model is while handling high ammonia-nitrogen wastewater, by secondary chlorine
Sour sodium waste water and ferrous sulfate waste water are handled together, achieve the effect that various wastewater synchronization process.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than to this realities
With the limitation of novel protected range, although being explained in detail referring to preferred embodiment to the utility model, this field it is common
It will be appreciated by the skilled person that can be with the technical solution of the present invention is modified or equivalently replaced, without departing from this reality
With the spirit and scope of new technique scheme.
Claims (6)
1. a kind of system for handling high ammonia-nitrogen wastewater, which is characterized in that including level-one dosing reaction system, second level dosing reaction system
System, NaClO wastewater storage tank, FeSO4Wastewater storage tank, NaOH storage tank, the feeding opening of the level-one dosing reaction system respectively with
NaClO wastewater storage tank, FeSO4The water outlet of wastewater storage tank is connected to；The feeding opening of the second level dosing reaction system respectively with
The medicine outlet connection of NaClO wastewater storage tank, NaOH storage tank, the water outlet of the level-one dosing reaction system are reacted with second level dosing
The water inlet of system is connected to.
2. the system of processing high ammonia-nitrogen wastewater according to claim 1, which is characterized in that the system also includes three-level plus
The water outlet of medicine impurity removed system, the second level dosing reaction system is connected to the water inlet of three-level dosing reaction system, described
The medicine outlet of NaOH storage tank is connected with the feeding opening of three-level dosing impurity removed system.
3. the system of processing high ammonia-nitrogen wastewater according to claim 2, which is characterized in that the system also includes photocatalysis
The water outlet of device, MBR system, the three-level dosing impurity removed system is connected to photocatalysis apparatus water inlet, the photocatalysis dress
The water outlet set is connected to MBR system water inlet.
4. the system of processing high ammonia-nitrogen wastewater according to claim 1, which is characterized in that the system also includes sand filtration dresses
Set, the water outlet of the level-one dosing reaction system is connected to the water inlet of sand filtering device, the water outlet of the sand filtering device with
The water inlet of second level dosing reaction system is connected to.
5. the system of processing high ammonia-nitrogen wastewater according to claim 3, which is characterized in that the function of the photocatalysis ultraviolet lamp
Rate P=1.6~2.4W.
6. the system of processing high ammonia-nitrogen wastewater according to any one of claims 1 to 4, which is characterized in that the connection is
It is connected to using pipeline, it is described to be equipped with control valve on the pipeline that two adjacent devices are connected to.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591965A (en) * | 2021-01-05 | 2021-04-02 | 哈尔滨工业大学 | Device for coupling and ultrafiltering water purification by ferrous/ultraviolet synergistic activation of sodium hypochlorite and operation method thereof |
-
2019
- 2019-01-02 CN CN201920011606.3U patent/CN209619123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591965A (en) * | 2021-01-05 | 2021-04-02 | 哈尔滨工业大学 | Device for coupling and ultrafiltering water purification by ferrous/ultraviolet synergistic activation of sodium hypochlorite and operation method thereof |
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Effective date of registration: 20230614 Address after: Room 606, No. 69, Xincheng Middle Road, Jiekou Street, Conghua District, Guangzhou, Guangdong 510999 Patentee after: Guangdong Shangchen Environmental Technology Co.,Ltd. Address before: 510000 room 363, building 4, No. 3, middle Qianjin Road, Aotou Town, Conghua, Guangzhou, Guangdong Patentee before: GUANGDONG YEANOVO ENVIRONMENTAL PROTECTION Co.,Ltd. |
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