CN217103410U - Device for removing ammonia nitrogen from manganese ore leachate - Google Patents
Device for removing ammonia nitrogen from manganese ore leachate Download PDFInfo
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- CN217103410U CN217103410U CN202221207609.2U CN202221207609U CN217103410U CN 217103410 U CN217103410 U CN 217103410U CN 202221207609 U CN202221207609 U CN 202221207609U CN 217103410 U CN217103410 U CN 217103410U
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Abstract
The utility model discloses a device for removing ammonia nitrogen from manganese ore leachate, in particular to the technical field of filtering devices, which comprises a manganese precipitation reactor, a vertical flow central pipe, a precipitation reactor, a first filter, a second filter and a third filter; the manganese precipitation reactor is connected with a vertical flow central pipe, the vertical flow central pipe is arranged in the precipitation reactor, and a first filter, a second filter and a third filter are sequentially connected behind the precipitation reactor. The utility model discloses an adopt an adsorption capacity big, resin that selectivity is high, adsorb the ammonia nitrogen after the preliminary treatment, and ammonia nitrogen clearance is more than 95%, and drainage ammonia nitrogen content can be low to 1ppm, through regeneration after the absorption, and regeneration liquid ammonium sulfate concentration can reach 60g/L, and the ammonium sulfate of high concentration can be used for producing the line demand completely.
Description
Technical Field
The utility model relates to a filter equipment technical field, concretely relates to device that manganese ore filtration liquid removed ammonia nitrogen.
Background
A prior art process flow diagram is shown in fig. 2.
The leachate wastewater in the manganese ore slag reservoir in a manganese ore enterprise contains manganese ions, magnesium ions and ammonia with high concentration, the manganese ions and the magnesium ions are usually required to be removed, and the ammonia can be recycled. The content of manganese: 500-2000 mg/L; calcium content: 1000-2000 mg/L, and the ammonia nitrogen content is 500-1000 mg/L.
For ammonia recovery in the current market, the mainstream process is a technology of deamination membrane, and the main process route is as follows:
1) collecting manganese ore leachate in a raw water pool, pumping the manganese ore leachate into a reaction tank, and adding lime milk/liquid alkali to remove manganese and magnesium;
2) precipitating the mixed solution, and then feeding the supernatant into a manganese sand filter for further removing manganese;
3) and (4) allowing the wastewater after manganese removal to enter a deamination membrane, and adsorbing by sulfuric acid to obtain ammonium sulfate and deamination wastewater.
2. Objective disadvantages of the prior art:
1) the existing process has no calcium removal process, the calcium content of the wastewater is high, and a degassing membrane is seriously scaled.
2) The deamination membrane is expensive and has high cost.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a device that manganese ore leachate removed ammonia nitrogen to solve among the prior art calcium content high, the degasification membrane scale deposit is serious, problem such as deamination membrane price height.
In order to achieve the above object, the present invention provides the following technical solutions:
a device for removing ammonia nitrogen from manganese ore leachate comprises a manganese precipitation reactor, a vertical flow central pipe, a precipitation reactor, a first filter, a second filter, a third filter, a first filter water inlet valve, a first filter water production valve, a second filter water inlet valve, a second filter water production valve and a water production device;
the manganese precipitation reactor is connected with a vertical flow central pipe, the vertical flow central pipe is arranged in the precipitation reactor, and the rear part of the precipitation reactor is connected with a first filter through a first filter water inlet valve; the first filter is connected with the second filter through a first filter water production valve and a second filter water inlet valve; the second filter is connected with the third filter through a water production valve of the second filter;
wherein, manganese and magnesium ions are precipitated in a manganese precipitation reactor; calcium ions are precipitated in a precipitation reactor; the wastewater passes through the first filter and the second filter to achieve the effect of deeply removing manganese ions; deamination is performed in a third filter.
Furthermore, the device also comprises a manganese precipitation stirrer, and the manganese precipitation stirrer is connected with the manganese precipitation reactor.
Furthermore, the device also comprises a first filter forward washing valve, a first filter backwashing valve, a second filter forward washing valve, a second filter backwashing valve, a third filter backwashing valve and a backwashing water device, wherein the back of the backwashing water device is respectively connected with the first filter through the first filter forward washing valve and the first filter backwashing valve, the second filter forward washing valve and the second filter backwashing valve are connected with the second filter, and the third filter backwashing valve is connected with the third filter.
Furthermore, the device also comprises a third filter regeneration valve and a regeneration device, wherein the regeneration device is connected with the third filter through the third filter regeneration valve.
Further, the device also comprises a first filter reverse-discharge valve, a first filter positive-discharge valve, a second filter reverse-discharge valve, a second filter positive-discharge valve, a third filter reverse-discharge valve and a regenerated wastewater device; the first filter reverse discharge valve and the first filter forward discharge valve are respectively connected with the regenerated wastewater device, and the second filter reverse discharge valve and the second filter forward discharge valve are respectively connected with the regenerated wastewater device; the third filter reverse discharge valve is connected with a regenerated waste water device.
The utility model has the advantages of as follows:
the utility model discloses an adopt an adsorption capacity big, resin that selectivity is high, adsorb the ammonia nitrogen after the preliminary treatment, and ammonia nitrogen clearance is more than 95%, and drainage ammonia nitrogen content can be low to 1ppm, through regeneration after the absorption, and regeneration liquid ammonium sulfate concentration can reach 60g/L, and the ammonium sulfate of high concentration can be used for producing the line demand completely.
The utility model discloses the technique removes calcium agent and chooses for use carbon dioxide, have very big application advantage, can guarantee the purity of quality of water (not introducing miscellaneous salt) when getting rid of calcium ion, consider from the angle of sediment that the calcium agent also can choose sodium carbonate for use to replace carbon dioxide, the precipitation effect is the same basically, but such processing technology has introduced sodium ion when having got rid of calcium ion, and the introduction of the general carbonic acid sodium salt of precipitation effect for guaranteeing calcium ion is introduced for excessive, about 2 times amount about, thereby make the water salinity rise influence the result of use of back end deamination technology when introducing calcium magnesium like this.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of a device for removing ammonia nitrogen from manganese ore leachate according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a device for removing ammonia nitrogen from manganese ore leachate in the prior art.
In the figure: 1-a manganese precipitation stirrer; 2-manganese precipitation reactor; 3-vertical flow central tube; 4-a precipitation reactor; 5-a first filter; 6-a second filter; 7-a third filter; 8-first strainer inlet valve; 9-first filter forward wash valve; 10-first filter backwash valve; 11-first filter back-drain valve; 12-a first filter water production valve; 13-first filter positive displacement valve; 14-second strainer inlet valve; 15-second filter forward wash valve; 16-second filter backwash valve; 17-a second filter back-drain valve; 18-a second filter water production valve; 19-a second filter positive discharge valve; 20-third strainer inlet valve; 21-third filter backwash valve; 22-a third filter regeneration valve; 23-a third filter back-drain valve; 24-a third filter water production valve; 25-third filter bottom drain valve; 26-a backwash water device; 27-a wastewater regeneration unit; 28-a regeneration device; 29-water producing device.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
The resin contains a large amount of strong acid groups, sulfonic acid group-SO 3 H, readily dissociates H in solution + Therefore, it is strongly acidic. Negatively charged groups, e.g. SO, contained in the bulk after dissociation of the resin 3－ And can adsorb and combine other cations in the solution. The two ion exchange resins react to form H in the resins + Exchange with cations in the solution. The strong acid resin has strong dissociation capability and can dissociate and generate ion exchange action in acidic or alkaline solution.
As shown in figure 1, the utility model provides a device for removing ammonia nitrogen from manganese ore leachate.
A device for removing ammonia nitrogen from manganese ore leachate comprises a manganese precipitation reactor 2, a vertical flow central pipe 3, a precipitation reactor 4, a first filter 5, a second filter 6, a third filter 7, a first filter water inlet valve 8, a first filter water production valve 12, a second filter water inlet valve 14, a second filter water production valve 18 and a water production device 29;
the manganese precipitation reactor 2 is connected with a vertical flow central pipe 3, the vertical flow central pipe 3 is arranged in a precipitation reactor 4, and the precipitation reactor 4 is connected with a first filter 5 through a first filter water inlet valve 8; the first filter 5 is connected with the second filter 6 through a first filter water production valve 12 and a second filter water inlet valve 14; the second filter 6 is connected with the third filter 7 through a second filter water producing valve 18;
wherein, manganese ions and magnesium ions are precipitated in the manganese precipitation reactor 2; calcium ions are precipitated in the precipitation reactor 4; the wastewater achieves the effect of deeply removing manganese ions through the first filter 5 and the second filter 6; the deamination is performed in a third filter 7.
Preferably, the device also comprises a manganese precipitation stirrer 1, and the manganese precipitation stirrer 1 is connected with the manganese precipitation reactor 2.
Preferably, the device further comprises a first filter forward washing valve 9, a first filter backwashing valve 10, a second filter forward washing valve 15, a second filter backwashing valve 16, a third filter backwashing valve 21 and a backwashing water device 26, wherein the backwashing water device 26 is connected with the first filter 5 through the first filter forward washing valve 9 and the first filter backwashing valve 10, the second filter forward washing valve 15 and the second filter backwashing valve 16 and the second filter 6, and the third filter 7 through the third filter backwashing valve 21.
Preferably, the device further comprises a third filter regeneration valve 22 and a regeneration device 28, wherein the regeneration device 28 is connected with the third filter 7 through the third filter regeneration valve 22.
Preferably, the device further comprises a first filter reverse-discharge valve 11, a first filter positive-discharge valve 13, a second filter reverse-discharge valve 17, a second filter positive-discharge valve 19, a third filter reverse-discharge valve 23 and a regenerated wastewater device 27; wherein, the first filter reverse-discharging valve 11 and the first filter positive-discharging valve 13 are respectively connected with the regeneration waste water device 27, and the second filter reverse-discharging valve 17 and the second filter positive-discharging valve 19 are respectively connected with the regeneration waste water device 27; the third filter reverse drain valve 23 is connected to a regenerated waste water device 27.
A new process for removing ammonia nitrogen from manganese ore leachate comprises the following process steps:
1) removing manganese and magnesium: adding lime milk, liquid caustic soda and the like into the manganese precipitation reactor 2, reacting with the nitrogen-containing wastewater under the stirring of the manganese precipitation stirrer 1, and performing preliminary demanganization and demagging to form waste residues;
the principle is as follows: mn 2+ +2OH - →Mn(OH) 2
Mg 2+ +2OH - →Mg(OH) 2
2) Calcium removal: the waste water after primary manganese and magnesium removal enters a precipitation reactor 4 from a vertical flow central pipe 3, a calcium removing agent is introduced into the precipitation reactor 4, the common calcium removing agent is carbon dioxide, calcium salt in the waste water can be removed under the condition of not introducing other salt, the key step of the process is the control of the pH value, the pH value of a reaction tank is ensured to be maintained at about 8, and the problem of calcium ion back dissolution caused by too low pH value is prevented;
the reaction principle is as follows: ca (OH) 2 +CO 2 ↑→CaCO 3 ↓+H 2 O
3) Deeply removing manganese: the wastewater after calcium removal passes through a first filter 5 and a second filter 6 for twice manganese sand filters to carry out deep manganese removal;
specifically, the calcium-removing wastewater enters a first filter 5 through a first filter water inlet valve 8, water is discharged through a first filter water production valve 12, the discharged water enters a second filter 6 through a second filter water inlet valve 14, and the discharged water is discharged through a second filter water production valve 18, so that the aim of deep manganese removal is fulfilled.
Water in the backwashing water device 26 respectively passes through the first filter forward washing valve 9 and the second filter forward washing valve 15 during forward washing, respectively enters the first filter 5 and the second filter 6, respectively enters the regeneration wastewater device 27 through the first filter forward discharge valve 13 and the second filter forward discharge valve 19, and is discharged out of the system; and during backwashing, the wastewater respectively passes through the first filter backwashing valve 10 and the second filter backwashing valve 16, respectively enters the first filter 5 and the second filter 6, and then respectively enters the regenerated wastewater device 27 through the first filter reverse discharge valve 11 and the second filter reverse discharge valve 17, and is discharged out of the system. The purpose of cleaning the filter material is achieved after forward washing and back washing.
4) Deep deamination: the wastewater after deep manganese removal enters a third filter 7, ammonia in the wastewater is deeply adsorbed at the tail end through a stable and reliable special ion exchange resin process, and elution is carried out after saturation to obtain a high-concentration ammonium sulfate solution
Specifically, the wastewater after manganese removal is discharged from the water production valve 18 of the second filter, enters the third filter 7 through the water inlet valve 20 of the third filter connected with the water production valve, and is discharged through the water production valve 24 of the third filter to enter the water production device 29. The water produced after deep deamination is obtained at this point.
The regenerant in the regenerating device 28 is added into the third filter 7 through the third filter regenerating valve 22, and then enters the regenerating waste water device 27 through the third filter back-discharge valve 23, and is discharged out of the system, so as to achieve the purpose of regenerating ion exchange resin.
The utility model discloses:
1. the carbon dioxide is used for precipitating calcium, so that extra salt is not introduced, and compared with the use of sodium carbonate, the method has the advantages of low cost and high cost performance;
2. the special ammonia nitrogen adsorption resin has good treatment effect, the ammonia nitrogen residual quantity of effluent is less than 1mg/L, the concentration of ammonium sulfate of regenerated liquid is high, the concentration of ammonium sulfate is more than 60g/L, and the regenerated liquid can be reused in a production line;
although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (5)
1. The device for removing ammonia nitrogen from manganese ore leachate is characterized by comprising a manganese precipitation reactor (2), a vertical flow central pipe (3), a precipitation reactor (4), a first filter (5), a second filter (6), a third filter (7), a first filter water inlet valve (8), a first filter water production valve (12), a second filter water inlet valve (14), a second filter water production valve (18) and a water production device (29);
wherein the manganese precipitation reactor (2) is connected with a vertical flow central pipe (3), the vertical flow central pipe (3) is arranged in the precipitation reactor (4), and the precipitation reactor (4) is connected with a first filter (5) through a first filter water inlet valve (8); the first filter (5) is connected with the second filter (6) through a first filter water production valve (12) and a second filter water inlet valve (14); the second filter (6) is connected with the third filter (7) through a second filter water producing valve (18);
wherein, manganese ions and magnesium ions are precipitated in the manganese precipitation reactor (2); calcium ions are precipitated in a precipitation reactor (4); the wastewater passes through a first filter (5) and a second filter (6) to achieve the effect of deeply removing manganese ions; deamination is carried out in a third filter (7).
2. The device for removing ammonia nitrogen from manganese ore leachate according to claim 1, further comprising a manganese precipitation stirrer (1), wherein the manganese precipitation stirrer (1) is connected with the manganese precipitation reactor (2).
3. The device for removing ammonia nitrogen from manganese ore leachate according to claim 2, further comprising a first filter forward washing valve (9), a first filter backwashing valve (10), a second filter forward washing valve (15), a second filter backwashing valve (16), a third filter backwashing valve (21) and a backwashing water device (26), wherein the backwashing water device (26) is connected with the first filter (5) through the first filter forward washing valve (9) and the first filter backwashing valve (10), the second filter forward washing valve (15) and the second filter backwashing valve (16) and the second filter (6), and the third filter (7) through the third filter backwashing valve (21).
4. The device for removing ammonia nitrogen from manganese ore leachate according to claim 3, characterized in that the device further comprises a third filter regeneration valve (22) and a regeneration device (28), wherein the regeneration device (28) is connected with the third filter (7) through the third filter regeneration valve (22).
5. The device for removing ammonia nitrogen from manganese ore leachate according to claim 4, characterized by further comprising a first filter reverse discharge valve (11), a first filter forward discharge valve (13), a second filter reverse discharge valve (17), a second filter forward discharge valve (19), a third filter reverse discharge valve (23) and a regenerated wastewater device (27); wherein, the first filter reverse-discharge valve (11) and the first filter forward-discharge valve (13) are respectively connected with the regeneration wastewater device (27), and the second filter reverse-discharge valve (17) and the second filter forward-discharge valve (19) are respectively connected with the regeneration wastewater device (27); the third filter reverse-discharging valve (23) is connected with a regenerated waste water device (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221207609.2U CN217103410U (en) | 2022-05-19 | 2022-05-19 | Device for removing ammonia nitrogen from manganese ore leachate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221207609.2U CN217103410U (en) | 2022-05-19 | 2022-05-19 | Device for removing ammonia nitrogen from manganese ore leachate |
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| CN217103410U true CN217103410U (en) | 2022-08-02 |
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| CN202221207609.2U Active CN217103410U (en) | 2022-05-19 | 2022-05-19 | Device for removing ammonia nitrogen from manganese ore leachate |
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