Purification system and wastewater treatment equipment for MVR
By designing a purification system for MVR, and using the MVR module and reverse osmosis membrane module to treat condensate water, the salt composition problem in the condensate water treated by MVR technology is solved, the purification of fresh water and the self-circulation of process wastewater is realized, and environmental protection requirements are met.
Patent Information
- Application Number
- CN202420444843.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-07
AI Technical Summary
The high-concentration wastewater condensate treated by MVR technology contains a large amount of salt components, which cannot be directly discharged or reused, and requires subsequent purification and treatment.
A purification system for MVR is designed, including an MVR module and a reverse osmosis membrane module. The MVR module treats wastewater through an evaporator and a condensate tank. The reverse osmosis membrane module concentrates and purifies the condensed water through the front and rear reverse osmosis membrane devices to obtain fresh water that meets the discharge or production requirements, and realizes the self-circulation of process wastewater.
Effective purification of condensate water after MVR treatment is achieved, fresh water that meets emission or production requirements, and environmental protection requirements are met through self-circulation of process wastewater.
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Figure CN222700141U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of wastewater treatment, for example, to a purification system for MVR and wastewater treatment equipment. Background Art
[0002] In the process production of coal chemical industry, steel, petrochemical industry, papermaking, seawater purification and other industries, MVR (mechanical vapor recompression) is introduced to treat process wastewater. However, since MVR forms condensed water by evaporating high-concentration wastewater, the condensed water contains a large amount of salt components and cannot meet the requirements of direct discharge or reuse, and needs subsequent purification. Utility Model Content
[0003] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0004] The embodiments of the present disclosure provide a purification system and wastewater treatment equipment for MVR, so as to facilitate the purification of condensed water after MVR treatment.
[0005] The embodiment of the present disclosure provides a purification system for MVR, comprising: an MVR module, comprising an MVR evaporator and an MVR condensate water tank, wherein the distilled water outlet of the MVR evaporator is connected to the water inlet of the MVR condensate water tank; a reverse osmosis membrane module, comprising a front reverse osmosis membrane device, a rear reverse osmosis membrane device and a fresh water tank, wherein the water outlet of the MVR condensate water tank is connected to the water inlet of the front reverse osmosis membrane device, the fresh water outlet of the front reverse osmosis membrane device is connected to the water inlet of the fresh water tank, the concentrated water outlet of the front reverse osmosis membrane device is connected to the water inlet of the rear reverse osmosis membrane, the fresh water outlet of the rear reverse osmosis membrane device is connected to the water inlet of the MVR condensate water tank, and the concentrated water outlet of the rear reverse osmosis membrane device is connected to the water inlet of the MVR evaporator.
[0006] An embodiment of the present disclosure provides a wastewater treatment device, including the above-mentioned purification system for MVR.
[0007] The purification system and wastewater treatment equipment for MVR provided by the embodiments of the present disclosure can achieve the following technical effects:
[0008] The condensed water after distillation of industrial wastewater through the MVR module is transported to the front reverse osmosis membrane device and the rear reverse osmosis membrane device in sequence. On the one hand, the front reverse osmosis membrane device is used to concentrate and purify the condensed water to obtain fresh water that meets the discharge requirements or production requirements. On the other hand, the concentrated water from the rear reverse osmosis membrane device is transported to the MVR evaporator, and the fresh water from the rear reverse osmosis membrane device is transported to the MVR condensate water tank, thereby realizing the self-circulation of process wastewater, thereby meeting environmental protection requirements from two aspects.
[0009] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:
[0011] Figure 1 It is a structural schematic diagram of a purification system for MVR provided in an embodiment of the present disclosure;
[0012] Figure 2 It is a schematic structural diagram of another purification system for MVR provided in an embodiment of the present disclosure.
[0013] Reference numerals:
[0014] 101: MVR module; 1011: MVR evaporator; 1012: MVR condensing water tank;
[0015] 102: reverse osmosis membrane module; 1021: front reverse osmosis membrane device; 1022: rear reverse osmosis membrane device; 1023: fresh water tank; 1024: high pressure pump; 10211: primary reverse osmosis membrane device; 10212: secondary reverse osmosis membrane device;
[0016] 103: Process equipment;
[0017] 104: filter module; 1041: booster pump; 1042: filter device. DETAILED DESCRIPTION
[0018] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0019] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0020] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0021] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.
[0022] Unless otherwise stated, the term "plurality" means two or more.
[0023] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.
[0024] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.
[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
[0026] Combination Figure 1 As shown, an embodiment of the present disclosure provides a purification system for MVR, including an MVR module 101 and a reverse osmosis membrane module 102 .
[0027] The MVR module 101 includes an MVR evaporator 1011 and an MVR condensed water tank 1012 , wherein the water inlet of the MVR evaporator 1011 is connected to process wastewater, and the distilled water outlet of the MVR evaporator 1011 is connected to the water inlet of the MVR condensed water tank 1012 .
[0028] The reverse osmosis membrane module 102 includes a front reverse osmosis membrane device 1021, a rear reverse osmosis membrane device 1022 and a fresh water tank 1023, wherein the water outlet of the MVR condensation water tank 1012 is connected to the water inlet of the front reverse osmosis membrane device 1021, the fresh water outlet of the front reverse osmosis membrane device 1021 is connected to the water inlet of the fresh water tank 1023, the concentrated water outlet of the front reverse osmosis membrane device 1021 is connected to the water inlet of the rear reverse osmosis membrane, the fresh water outlet of the rear reverse osmosis membrane device 1022 is connected to the water inlet of the MVR condensation water tank 1012, and the concentrated water outlet of the rear reverse osmosis membrane device 1022 is connected to the water inlet of the MVR evaporator 1011.
[0029] By adopting the purification system for MVR provided by the embodiment of the present disclosure, the condensed water after the industrial wastewater is distilled through the MVR module is transported to the front reverse osmosis membrane device and the rear reverse osmosis membrane device in sequence. On the one hand, the condensed water is concentrated and purified by the front reverse osmosis membrane device to obtain fresh water that meets the discharge requirements or production requirements. On the other hand, the concentrated water of the rear reverse osmosis membrane device is transported to the MVR evaporator, and the fresh water of the rear reverse osmosis membrane device is transported to the MVR condensate water tank, so as to realize the self-circulation of process wastewater, thereby meeting the environmental protection requirements from two aspects.
[0030] Combination Figure 2 As shown, an embodiment of the present disclosure provides a purification system for MVR, including an MVR module 101 , a reverse osmosis membrane module 102 , a process device 103 and a filter module 104 .
[0031] Optionally, the process device 103 is provided with a water inlet and a wastewater outlet; the water inlet of the process device 103 is used to receive process pure water; the process device 103 is used to perform process production based on process pure water, and at the same time, the process wastewater generated during the process production is discharged through the wastewater outlet of the process device 103.
[0032] In some embodiments, process production includes process production in industries such as coal chemical industry, steel, petrochemical industry, papermaking, seawater purification, and wastewater treatment.
[0033] Optionally, the MVR module 101 includes an MVR evaporator 1011 and an MVR condensed water tank 1012 .
[0034] Optionally, the water inlet of the MVR evaporator 1011 is connected to the wastewater outlet of the process device 103, and the distilled water outlet of the MVR evaporator 1011 is connected to the water inlet of the MVR condensation water tank 1012, wherein the MVR evaporator 1011 is used to evaporate and crystallize the process wastewater to separate the inorganic salts and distilled water in the process wastewater, and at the same time, the distilled water obtained after evaporation and crystallization is discharged through the distilled water outlet of the MVR evaporator 1011.
[0035] Optionally, a water outlet of the MVR condensed water tank 1012 is connected to a water inlet of the filter module 104 , wherein the MVR condensed water tank 1012 is used to store evaporated condensed water of the MVR evaporator 1011 .
[0036] Optionally, the filter module 104 includes a booster pump 1041 and a filter device 1042 .
[0037] Optionally, the water inlet of the boost pump 1041 is connected to the water outlet of the MVR evaporator 1011, and the water outlet of the boost pump 1041 is connected to the water inlet of the filter device 1042, wherein the boost pump 1041 is used to transport the evaporated condensed water in the MVR condensed water tank 1012 to the water inlet of the filter device 1042 by boosting.
[0038] Optionally, the water outlet of the filter device 1042 is connected to the water inlet of the reverse osmosis membrane module 102, wherein the filter device 1042 is used to filter out harmful components such as organic matter, impurities, suspended matter, etc. in the evaporated condensed water to prevent these substances from entering subsequent devices and causing blockage, pollution, and shortened service life.
[0039] Optionally, the filter device 1042 includes one or more of a precision filter, a mechanical filter, an activated carbon filter, and a softening filter.
[0040] Optionally, the reverse osmosis membrane module 102 includes a front reverse osmosis membrane device 1021 , a rear reverse osmosis membrane device 1022 , a fresh water tank 1023 and a high-pressure pump 1024 .
[0041] Optionally, the water inlet of the high-pressure pump 1024 is connected to the water outlet of the filter device 1042, and the water outlet of the high-pressure pump 1024 is connected to the water inlet of the pre-reverse osmosis membrane device 1021, wherein the high-pressure pump 1024 is used to pressurize the liquid transported by the filter device 1042 according to a preset pressure.
[0042] Optionally, the front reverse osmosis membrane device 1021 includes a primary reverse osmosis membrane device 10211 and a secondary reverse osmosis membrane device 10212 .
[0043] Optionally, the water inlet of the first-stage reverse osmosis membrane device 10211 is connected to the water outlet of the high-pressure pump 1024 , the fresh water outlet of the first-stage reverse osmosis membrane device 10211 is connected to the water inlet of the fresh water tank 1023 , and the concentrated water outlet of the first-stage reverse osmosis membrane device 10211 is connected to the water inlet of the second-stage reverse osmosis membrane device 10212 .
[0044] Optionally, the fresh water outlet of the secondary reverse osmosis membrane device 10212 is connected to the water inlet of the fresh water tank 1023 , and the concentrated water outlet of the secondary reverse osmosis membrane device 10212 is connected to the water inlet of the post-reverse osmosis membrane device 1022 .
[0045] Optionally, the fresh water outlet of the post-reverse osmosis membrane device 1022 is connected to the water inlet of the MVR condensation water tank 1012 , and the concentrated water outlet of the post-reverse osmosis membrane device 1022 is connected to the water inlet of the MVR evaporator 1011 .
[0046] Optionally, the first-stage reverse osmosis membrane device 10211, the second-stage reverse osmosis membrane device 10212 and the post-reverse osmosis membrane device 1022 are all composed of a shell, a reverse osmosis membrane and a detection device, wherein the detection device is used to detect the pressure drop, flow rate and water quality on both sides of the reverse osmosis membrane.
[0047] Optionally, the reverse osmosis membrane in the post-reverse osmosis membrane device 1022 includes a high-pressure seawater membrane or a high-pressure RO (Reverse Osmosis) membrane.
[0048] In some embodiments, the first-stage reverse osmosis membrane device 10211, the second-stage reverse osmosis membrane device 10212 and the post-reverse osmosis membrane device 1022 are all used to concentrate and purify the incoming water under the action of an osmotic pressure higher than that of the solution, thereby separating the inorganic salt substances from the water.
[0049] The purification system for MVR provided by the embodiment of the present disclosure has the following advantages:
[0050] First, the condensed water is concentrated and purified through the reverse osmosis membrane module to obtain fresh water that meets the discharge requirements or production requirements;
[0051] Second, filter the condensed water through the pre-filter device to avoid problems such as reverse osmosis membrane blockage, pollution and shortened service life;
[0052] Third, the fresh water output from the front reverse osmosis membrane device is used as process pure water and transported to the process device for recycling, achieving zero discharge of process wastewater;
[0053] Fourth, the concentrated water from the post-reverse osmosis membrane device is transported to the MVR evaporator, and the fresh water from the post-reverse osmosis membrane device is transported to the MVR condensate water tank, thus realizing the internal circulation of process wastewater.
[0054] An embodiment of the present disclosure provides a wastewater treatment device, including the above-mentioned purification system for MVR.
[0055] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A purification system for MVR, characterized in that: include: The MVR module comprises an MVR evaporator and an MVR condensed water tank, wherein the distilled water outlet of the MVR evaporator is connected to the water inlet of the MVR condensed water tank; The reverse osmosis membrane module comprises a front reverse osmosis membrane device, a rear reverse osmosis membrane device and a fresh water tank, wherein the water outlet of the MVR condensation water tank is connected to the water inlet of the front reverse osmosis membrane device, the fresh water outlet of the front reverse osmosis membrane device is connected to the water inlet of the fresh water tank, the concentrated water outlet of the front reverse osmosis membrane device is connected to the water inlet of the rear reverse osmosis membrane, the fresh water outlet of the rear reverse osmosis membrane device is connected to the water inlet of the MVR condensation water tank, and the concentrated water outlet of the rear reverse osmosis membrane device is connected to the water inlet of the MVR evaporator.
2. The system according to claim 1, characterized in that The front reverse osmosis membrane device comprises: A primary reverse osmosis membrane device, wherein the water outlet of the MVR condensation water tank is connected to the water inlet of the primary reverse osmosis membrane device, and the fresh water outlet of the primary reverse osmosis membrane device is connected to the water inlet of the fresh water tank; A two-stage reverse osmosis membrane device, wherein the concentrated water outlet of the first-stage reverse osmosis membrane device is connected to the water inlet of the second-stage reverse osmosis membrane device, the fresh water outlet of the second-stage reverse osmosis membrane device is connected to the water inlet of the fresh water tank, and the concentrated water outlet of the second-stage reverse osmosis membrane device is connected to the water inlet of the post-reverse osmosis membrane device.
3. The system according to claim 2, characterized in that The primary reverse osmosis membrane device, the secondary reverse osmosis membrane device and the post-reverse osmosis membrane device are all composed of a shell, a reverse osmosis membrane and a detection device, wherein the detection device is used to detect the pressure drop, flow rate and water quality on both sides of the reverse osmosis membrane.
4. The system according to claim 2, characterized in that The reverse osmosis membrane in the post-reverse osmosis membrane device includes a high-pressure seawater membrane or a high-pressure RO membrane.
5. The system according to claim 1, characterized in that The system further comprises a process device, the water outlet of the fresh water tank is connected to the water inlet of the process device, and the wastewater outlet of the process device is connected to the water inlet of the MVR evaporator.
6. The system according to claim 1, characterized in that The reverse osmosis membrane module further includes a high-pressure pump, the water outlet of the MVR condensation water tank is connected to the water inlet of the high-pressure pump, and the water outlet of the high-pressure pump is connected to the water inlet of the front reverse osmosis membrane device.
7. The system according to any one of claims 1 to 6, characterized in that: A filter module is further included between the MVR module and the reverse osmosis membrane module, wherein the water outlet of the MVR evaporator is connected to the water inlet of the filter module, and the water outlet of the filter module is connected to the water inlet of the pre-reverse osmosis membrane device.
8. The system according to claim 7, characterized in that The filter module comprises: A booster pump, wherein the water outlet of the MVR evaporator is connected to the water inlet of the booster pump; The filter device, the water outlet of the booster pump is connected to the water inlet of the filter device, and the water outlet of the filter device is connected to the water inlet of the front reverse osmosis membrane device.
9. The system according to claim 8, characterized in that The filter device includes one or more of a precision filter, a mechanical filter, an activated carbon filter, and a softening filter.
10. A wastewater treatment device, characterized in that: The invention comprises a purification system for MVR according to any one of claims 1 to 9.