CN219355856U - Membrane high-power concentration device of ammonium sulfate - Google Patents
Membrane high-power concentration device of ammonium sulfate Download PDFInfo
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- CN219355856U CN219355856U CN202223597008.XU CN202223597008U CN219355856U CN 219355856 U CN219355856 U CN 219355856U CN 202223597008 U CN202223597008 U CN 202223597008U CN 219355856 U CN219355856 U CN 219355856U
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Abstract
The utility model discloses a membrane high-power concentration device of ammonium sulfate, which comprises: a raw water tank; the suction end of the primary high-pressure pump is communicated with the original water tank; three reverse osmosis membrane components which are sequentially connected; the water inlet end of the middle water production tank is communicated with the water production outlets of the first reverse osmosis membrane component and the second reverse osmosis membrane component through pipelines; the suction end of the second-stage high-pressure pump is communicated with the intermediate water tank through a pipeline; and a water inlet of the fourth reverse osmosis membrane component is communicated with a pump outlet of the second-level high-pressure pump through a pipeline. Solves the high-power recovery problem of the reverse osmosis membrane assembly, greatly reduces the evaporated water quantity and saves a large amount of energy.
Description
Technical Field
The utility model relates to the technical field of water quality treatment, in particular to a membrane high-power concentration device of ammonium sulfate.
Background
Currently, ammonium sulfate solutions are concentrated at high power using traditional membrane concentration combined with multiple effect evaporation or MVR techniques. The amount of evaporation required for multi-effect evaporation or MVR evaporation is large because of the low concentration ratio of the film, and the investment cost and running cost are particularly high. Meanwhile, the produced water has high pH value, high ammonia nitrogen concentration and high salt content, and the water quality can not reach the standard and can not be discharged or recycled.
Disclosure of Invention
The utility model aims to provide a membrane high-power concentration device for ammonium sulfate, which aims to solve the problems in the prior art.
The purpose of the utility model is realized in the following way: a membrane high concentration device for ammonium sulfate, comprising:
a raw water tank;
the suction end of the primary high-pressure pump is communicated with the original water tank;
the three reverse osmosis membrane assemblies which are sequentially connected are a first reverse osmosis membrane assembly, a second reverse osmosis membrane assembly and a third reverse osmosis membrane assembly respectively, the pump outlet of the primary high-pressure pump is connected with the inlet of the first reverse osmosis membrane assembly through a pipeline, the concentrated solution outlet of the first reverse osmosis membrane assembly is connected with the inlet of the second reverse osmosis membrane assembly, and the concentrated solution outlet of the second reverse osmosis membrane assembly is connected with the inlet of the third reverse osmosis membrane assembly;
the water inlet end of the intermediate water production tank is communicated with the water production outlets of the first reverse osmosis membrane component and the second reverse osmosis membrane component through pipelines;
the suction end of the second-level high-pressure pump is communicated with the intermediate water tank through a pipeline;
the water inlet of the fourth reverse osmosis membrane component is communicated with the pump outlet of the second-level high-pressure pump through a pipeline;
wherein, a PH adjusting component is connected on a pipeline connected between the middle water producing tank and the second-level high-pressure pump.
The utility model has the beneficial effects that:
the primary liquid is sequentially treated by the first reverse osmosis membrane assembly to the third reverse osmosis membrane assembly, the concentrated liquid is specially collected into a concentrated liquid box, the produced water of the first reverse osmosis membrane assembly and the produced water of the second reverse osmosis membrane assembly are specially extracted for PH value adjustment, and then the produced water is treated by the fourth reverse osmosis membrane assembly, so that the terminal produced water is obtained, the quality of the produced water is obviously improved, and the concentrated liquid and the produced water are convenient to recycle.
Drawings
Fig. 1 is a system layout of the present utility model.
Detailed Description
The utility model will be further described with reference to the drawings and specific examples.
As shown in fig. 1, a membrane high-concentration device for ammonium sulfate comprises:
a raw water tank 1;
the suction end of the primary high-pressure pump 2 is communicated with the original water tank 1;
the three reverse osmosis membrane assemblies which are sequentially connected are a first reverse osmosis membrane assembly 4, a second reverse osmosis membrane assembly 5 and a third reverse osmosis membrane assembly 6 respectively, the pump outlet of the primary high-pressure pump 2 is connected with the inlet of the first reverse osmosis membrane assembly 4 through a pipeline, the concentrated solution outlet of the first reverse osmosis membrane assembly 4 is connected with the inlet of the second reverse osmosis membrane assembly 5, and the concentrated solution outlet of the second reverse osmosis membrane assembly 5 is connected with the inlet of the third reverse osmosis membrane assembly 6;
the concentrated solution tank 7 is communicated with a concentrated solution outlet of the third reverse osmosis membrane module 6;
the water inlet end of the middle water production tank 8 is communicated with the water production outlets of the first reverse osmosis membrane component 4 and the second reverse osmosis membrane component 5 through pipelines;
the suction end of the second-stage high-pressure pump 10 is communicated with the intermediate product water tank 8 through a pipeline;
the water inlet of the fourth reverse osmosis membrane assembly 11 is communicated with the pump outlet of the second-stage high-pressure pump 10 through a pipeline;
the terminal water producing tank 12, the water producing outlet of the fourth reverse osmosis membrane component 11 is communicated with the terminal water producing tank 12 through a pipeline.
Wherein, the water outlet of the third reverse osmosis membrane module 6 is communicated with the original water tank 1 through a return pipeline, and the concentrated solution outlet of the fourth reverse osmosis membrane module 11 is communicated with the original water tank 1 through a return pipeline, thereby forming the effect of circulation treatment.
A PH adjusting part 9 (i.e., a PH adjuster, which is a conventional part) is connected to a line connecting the intermediate-product tank 8 and the second-stage high-pressure pump 10, thereby adjusting the PH value of the intermediate-product water.
A precise filter 3 is connected on a pipeline connected between the first-stage high-pressure pump 2 and the first reverse osmosis membrane component 4 so as to perform preliminary filtration on pollutants.
The interception precision of the second reverse osmosis membrane assembly 5 is lower than that of the first reverse osmosis membrane assembly 4, and the interception precision of the third reverse osmosis membrane assembly 6 is lower than that of the second reverse osmosis membrane assembly 5.
The process of this example is described as follows:
the method comprises the steps of injecting ammonium sulfate stock solution to be treated into a raw water tank 1, homogenizing the stock solution in the raw water tank 1, injecting the homogenized stock solution into a precision filter 3 through a primary high-pressure pump 2, and flexibly controlling the operation flow through constant-pressure frequency conversion by the primary high-pressure pump 2. The precision filter 3 has a filtration precision of 5 microns and is mainly used for removing larger particles in the stock solution. The stock solution enters the first reverse osmosis membrane component 4 after being filtered by the precise filter 3, and large particles are removed by the precise filter 3, so that the scratch on a desalting layer of the first reverse osmosis membrane component 4 is avoided, the desalination rate and the service life of the first reverse osmosis membrane component 4 are ensured, the primary function of the first reverse osmosis membrane component 4 is to perform primary concentration on the ammonium sulfate stock solution, the interception precision is between a traditional ultrafiltration membrane and a nanofiltration membrane, partial interception is performed on ammonium sulfate, and partial ammonium sulfate enters a water producing side of the first reverse osmosis membrane component 4, thereby reducing the osmotic pressure between water produced by the first reverse osmosis membrane component 4 and concentrated water, the ammonium sulfate solution of 120000ppm can be concentrated to the ammonium sulfate solution of 160000ppm by the first reverse osmosis membrane component 4 under the pressure of 80 kg, and the interception rate of the first reverse osmosis membrane component 4 on the ammonium sulfate in the set of device is controlled between 75% and 85%.
The produced water of the first reverse osmosis membrane component 4 enters an intermediate product water tank 8, and the concentrated water of the first reverse osmosis membrane component 4 enters a second reverse osmosis membrane component 5 for further concentration. The operation pressure of the second reverse osmosis membrane module 5 is maintained below 80 kg, and the operation pressure is equivalent to that of the first reverse osmosis membrane module 4, namely the driving force for overcoming the osmotic pressure is equivalent, but the second reverse osmosis membrane module 5 continues to concentrate on the basis of the first reverse osmosis membrane module 4, so that the concentration of the concentrated solution of the second reverse osmosis membrane module 5 is higher, in order to achieve the purpose, the concentration of the ammonium sulfate on the water producing side of the second reverse osmosis membrane module 5 is higher, namely more ammonium sulfate enters the water producing side through the second reverse osmosis membrane module 5, in order to achieve the effect, the interception precision of the second reverse osmosis membrane module 5 is lower than that of the first reverse osmosis membrane module 4, and the interception rate of the second reverse osmosis membrane module 5 to the ammonium sulfate is set between 65% and 75% according to the operation data of the device, and the ammonium sulfate solution of 160000ppm can be concentrated to the ammonium sulfate solution of 200000 ppm.
The produced water of the second reverse osmosis membrane component 5 and the produced water of the first reverse osmosis membrane component 4 are required to be further treated because the produced water contains ammonium sulfate with higher concentration, so that the produced water of the first reverse osmosis membrane component 4 and the produced water of the second reverse osmosis membrane component 5 are combined and enter the middle production water tank 8, the ammonium sulfate is changed into gas if the pH is higher because the ammonium sulfate is of special nature, the membrane is not intercepted in a gas state, so that the PH of the produced water is increased due to the fact that a great amount of the produced water enters the water producing side, ammonia nitrogen exceeds standard, the conductivity is increased and cannot be recycled or discharged up to standard, in order to solve the problems, the produced water of the first reverse osmosis membrane component 4 and the second reverse osmosis membrane component 5 is uniformly processed through the middle production water tank 8 and then passes through the PH regulating component 9, the PH value is controlled to be about 5, the ammonia nitrogen in the ammonium sulfate is ensured not to exist in the form of gas but exists in the form of ammonium ion, the PH value of the ammonium sulfate is controlled to be about 5 through the operation data of the device, and the interception rate of the ammonia sulfate by the membrane is greater than 95%. After passing through the PH adjusting part 9, the liquid enters a second-stage high-pressure pump 10, the second-stage high-pressure pump 10 adopts a centrifugal pump, the operation pressure is controlled to be about 50 kg, the liquid enters a fourth reverse osmosis membrane assembly 11 through the second-stage high-pressure pump 10, the fourth reverse osmosis membrane assembly 11 adopts a traditional sea water desalination membrane, the pressure-resistant grade is 81 kg, and the removal rate of ammonium sulfate is 99%. The produced water of the fourth reverse osmosis membrane component 11 enters a terminal produced water tank 12, and the concentrated water of the fourth reverse osmosis membrane component 11 flows back to the original water tank 1 for reprocessing.
The concentrated water of the second reverse osmosis membrane module 5 enters the third reverse osmosis membrane module 6, the operation pressure of the third reverse osmosis membrane module 6 is maintained below 80 kg, the operation pressure is equivalent to that of the second reverse osmosis membrane module 5, namely the driving force for overcoming the osmotic pressure is equivalent, but the concentration of the concentrated solution of the third reverse osmosis membrane module 6 is higher because the third reverse osmosis membrane module 6 continues to concentrate on the basis of the second reverse osmosis membrane module 5, in order to achieve the purpose, the concentrated solution of the third reverse osmosis membrane module 6 can be realized only when the concentration of ammonium sulfate on the water producing side of the third reverse osmosis membrane module 6 is higher, namely the concentration of ammonium sulfate entering the water producing side through the third reverse osmosis membrane module 6 is higher, in order to achieve the effect, the interception precision of the third reverse osmosis membrane module 6 is lower than that of the second reverse osmosis membrane module 5, the interception precision of the third reverse osmosis membrane module 6 is set between 55% and 65% according to the operation data of the device, and the interception rate of the ammonium sulfate by the third reverse osmosis membrane module 6 can be concentrated into 240000ppm ammonium sulfate solution according to the operation data of the device.
The foregoing is a preferred embodiment of the present utility model, and various changes and modifications may be made therein by those skilled in the art without departing from the general inventive concept, and such changes and modifications should be considered as falling within the scope of the present utility model as defined in the appended claims.
Claims (7)
1. A membrane high concentration device for ammonium sulfate, comprising:
a raw water tank (1);
the suction end of the primary high-pressure pump (2) is communicated with the original water tank (1);
the three reverse osmosis membrane assemblies which are sequentially connected are a first reverse osmosis membrane assembly (4), a second reverse osmosis membrane assembly (5) and a third reverse osmosis membrane assembly (6), the pump outlet of the primary high-pressure pump (2) is connected with the inlet of the first reverse osmosis membrane assembly (4) through a pipeline, the concentrated solution outlet of the first reverse osmosis membrane assembly (4) is connected with the inlet of the second reverse osmosis membrane assembly (5), and the concentrated solution outlet of the second reverse osmosis membrane assembly (5) is connected with the inlet of the third reverse osmosis membrane assembly (6);
the water inlet end of the middle water production tank (8) is communicated with the water production outlets of the first reverse osmosis membrane component (4) and the second reverse osmosis membrane component (5) through pipelines;
the suction end of the secondary high-pressure pump (10) is communicated with the intermediate water production tank (8) through a pipeline;
the water inlet of the fourth reverse osmosis membrane assembly (11) is communicated with the pump outlet of the second-level high-pressure pump (10) through a pipeline;
wherein a PH adjusting component (9) is connected to a pipeline between the intermediate-product water tank (8) and the secondary high-pressure pump (10).
2. The membrane high concentration device of ammonium sulfate according to claim 1, wherein: the water outlet of the third reverse osmosis membrane component (6) is communicated with the original water tank (1) through a return pipeline.
3. The membrane high concentration device of ammonium sulfate according to claim 1, wherein: the concentrated solution outlet of the fourth reverse osmosis membrane component (11) is communicated with the original water tank (1) through a return pipeline.
4. The membrane high concentration device of ammonium sulfate according to claim 2, wherein: the device also comprises a concentrated solution tank (7), wherein the concentrated solution tank (7) is communicated with a concentrated solution outlet of the third reverse osmosis membrane component (6).
5. A membrane high concentration unit for ammonium sulfate as claimed in claim 3, wherein: the device also comprises a terminal water producing tank (12), and a water producing outlet of the fourth reverse osmosis membrane component (11) is communicated with the terminal water producing tank (12) through a pipeline.
6. The membrane high concentration device of ammonium sulfate according to claim 1, wherein: a precise filter (3) is connected on a pipeline connected between the first-stage high-pressure pump (2) and the first reverse osmosis membrane component (4).
7. A membrane high concentration apparatus for ammonium sulfate as claimed in any one of claims 1 to 6, wherein: the interception precision of the second reverse osmosis membrane component (5) is lower than that of the first reverse osmosis membrane component (4), and the interception precision of the third reverse osmosis membrane component (6) is lower than that of the second reverse osmosis membrane component (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223597008.XU CN219355856U (en) | 2022-12-30 | 2022-12-30 | Membrane high-power concentration device of ammonium sulfate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223597008.XU CN219355856U (en) | 2022-12-30 | 2022-12-30 | Membrane high-power concentration device of ammonium sulfate |
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| Publication Number | Publication Date |
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| CN219355856U true CN219355856U (en) | 2023-07-18 |
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| CN202223597008.XU Active CN219355856U (en) | 2022-12-30 | 2022-12-30 | Membrane high-power concentration device of ammonium sulfate |
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