Multi-source water supply system for coal plant

Abstract

The invention discloses a multi-source water supply system for a coal plant, which comprises a precipitation unit for collecting and treating coal plant equipment wastewater; the water using end is connected with the precipitation unit; the collecting unit is used for collecting rainwater and coal yard spraying wastewater; the treatment unit is connected with the collection unit and is used for treating the wastewater collected by the collection unit; the treatment unit is connected with a water using end, and the collected rainwater and the coal yard spraying wastewater can be used by the water using end after being treated. By arranging the treatment unit, the collection unit and the precipitation unit, various water resources of the coal yard can be effectively collected and used after being treated, and waste of the water resources is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment models, and in particular to a multi-source water supply system for a coal plant. Background Art

[0002] A large amount of dust is generated in the process of loading, unloading and transporting coal in coal yards, which not only pollutes the environment but also threatens the health of workers. Flushing and spraying water can effectively reduce the dust concentration in the air and reduce dust pollution.

[0003] However, in the prior art, there is no system for treating wastewater from coal yards, so water resources are difficult to recycle and coal yards consume a lot of water. Therefore, the present invention proposes a multi-source water supply system for a coal plant. Summary of the invention

[0004] In view of the problem of large water consumption in coal yards in the above-mentioned prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a multi-source water supply system for a coal plant.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-source water supply system for a coal plant, comprising:

[0007] Sedimentation unit, used to collect and treat wastewater from coal yard equipment;

[0008] A water end is connected to the precipitation unit; and

[0009] Collection unit for collecting rainwater and coal yard spray wastewater;

[0010] a processing unit connected to the collecting unit and used for processing the wastewater collected by the collecting unit;

[0011] The processing unit is connected to the water-using end and can process the collected rainwater and coal yard spray wastewater for use by the water-using end.

[0012] As a preferred solution of the multi-source water supply system of the coal plant described in the present invention, the sedimentation unit includes a first sedimentation tank and a second sedimentation tank, and the wastewater can be transported to the second sedimentation tank for secondary sedimentation after being precipitated inside the first sedimentation tank.

[0013] As a preferred solution of the multi-source water supply system of the coal plant of the present invention, a first transfer pump is arranged inside the first sedimentation tank, and the first transfer pump can transport the water in the first sedimentation tank to the second sedimentation tank.

[0014] As a preferred solution of the multi-source water supply system of a coal plant described in the present invention, the water-using end includes a first clean water tank and a water supply mother pipe; a water supply pump is arranged inside the first clean water tank, and the water supply pump is connected to the water supply mother pipe; the first sedimentation tank and the second sedimentation tank are both connected to the water supply mother pipe.

[0015] As a preferred solution of the multi-source water supply system of a coal plant described in the present invention, the collection unit includes a rainwater pool and a spray wastewater collection pool; a rainwater pump is arranged inside the rainwater pool, and the rainwater pump can transport the water inside the rainwater pool to the processing unit.

[0016] As a preferred solution of the multi-source water supply system of a coal plant described in the present invention, the processing unit includes a primary sedimentation tank and a flocculation sedimentation tank; the primary sedimentation tank is connected to the flocculation sedimentation tank; the water inside the rainwater tank can be transported to the primary sedimentation tank through a rainwater pump.

[0017] As a preferred solution of the multi-source water supply system of a coal plant of the present invention, a second transfer pump is arranged inside the primary sedimentation tank, and the second transfer pump is connected to the flocculation sedimentation tank through a transfer pipe.

[0018] As a preferred solution of the multi-source water supply system of a coal plant described in the present invention, a pipeline mixer is arranged on the transfer pipe, and the pipeline mixer is connected to a coagulant pipeline; and the flocculation sedimentation tank is connected to a coagulant aid pipeline.

[0019] As a preferred solution of the multi-source water supply system of a coal plant of the present invention, the water-using end is also provided with a second clean water tank connected to the first clean water tank; the flocculation sedimentation tank is connected to the second clean water tank.

[0020] As a preferred solution of the multi-source water supply system for a coal plant described in the present invention, the first transfer pump, the water supply pump, the rainwater pump, and the second transfer pump are all lift pumps.

[0021] The beneficial effects of the present invention are as follows: by arranging the processing unit, the collecting unit and the sedimentation unit, various water resources in the coal yard can be effectively collected and used after being processed, thereby effectively avoiding the waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall structure of the multi-source water supply system of a coal plant of the present invention.

[0024] Figure 2 This is a structural diagram of the sedimentation unit and the water-using end described in the present invention.

[0025] Figure 3 This is a structural diagram of the collection unit and the processing unit described in the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1, reference Figure 1 , provides a multi-source water supply system for a coal plant, including a sedimentation unit 100, used to collect and treat wastewater from coal yard equipment; a water use end 200, connected to the sedimentation unit 100; and a collection unit 300, used to collect rainwater and coal yard spray wastewater; a treatment unit 400, connected to the collection unit 300, used to treat the wastewater collected by the collection unit 300; the treatment unit 400 is connected to the water use end 200, and can process the collected rainwater and coal yard spray wastewater for use by the water use end 200.

[0031] Among them, the sedimentation unit 100 is used to collect and treat coal yard equipment wastewater. The sedimentation unit 100 adopts the design of a horizontal tube sedimentation tank. Through the horizontally placed sedimentation tubes, vertical separation of suspended matter is achieved, the sedimentation area is increased, the settling distance of the suspended matter is reduced, and the sedimentation time is shortened.

[0032] In addition, the sedimentation unit 100 may also be equipped with an automatic flushing pipe without stopping the water flow to solve the problem of sludge adhesion and accumulation.

[0033] Rainwater and coal yard spray wastewater can be collected by the collection unit 300, and then the collected wastewater is treated by the treatment unit 400, so that the collected rainwater and coal yard spray wastewater can be used. The advantage is that rainwater has a higher degree of cleanliness than coal yard spray wastewater. Therefore, when rainwater and coal yard spray wastewater enter the treatment unit 400 for treatment at the same time, rainwater can dilute the concentration of pollutants in the coal yard spray wastewater, thereby facilitating treatment.

[0034] Specifically, the sedimentation unit 100 includes a first sedimentation tank 101 and a second sedimentation tank 102 . After the wastewater is precipitated in the first sedimentation tank 101 , it can be transported to the second sedimentation tank 102 for secondary sedimentation.

[0035] The wastewater is first subjected to preliminary sedimentation in the first sedimentation tank 101, and larger suspended particles are removed at this stage. Then, the wastewater after the preliminary sedimentation is transported to the second sedimentation tank 102 for secondary sedimentation to further remove smaller suspended particles. This two-stage sedimentation system can significantly improve the sedimentation efficiency and ensure more thorough removal of suspended matter.

[0036] Furthermore, a first transfer pump 103 is disposed inside the first sedimentation tank 101 , and the first transfer pump 103 can transport water in the first sedimentation tank 101 to the second sedimentation tank 102 .

[0037] Furthermore, the water-using end 200 includes a first clear water tank 201 and a water supply main pipe 202 ; a water supply pump 203 is arranged inside the first clear water tank 201 , and the water supply pump 203 is connected to the water supply main pipe 202 ; the first sedimentation tank 101 and the second sedimentation tank 102 are both connected to the water supply main pipe 202 .

[0038] In order to ensure the water supply quality of the water supply mother pipe 202, it should be noted that when the first sedimentation tank 101 transports water to the inside of the water supply mother pipe 202, only the water in the upper layer of the first sedimentation tank 101 is needed. When the water supply mother pipe 202 supplies water to the outside, the water inside the first sedimentation tank 101 and the second sedimentation tank 102 is used first. When the water storage volume in the first sedimentation tank 101 and the second sedimentation tank 102 is small, the first clear water tank 201 can be used. The first clear water tank 201 plays a role in ensuring sufficient water supply.

[0039] Through the above technical solution, various water resources in the coal yard can be effectively collected and used after treatment, thus effectively avoiding the waste of water resources.

[0040] Example 2, reference Figure 2This embodiment is different from the first embodiment in that: the collection unit 300 includes a rainwater pool 301 and a spray wastewater collection pool 302; a rainwater pump 303 is arranged inside the rainwater pool 301, and the rainwater pump 303 can transport the water inside the rainwater pool 301 to the processing unit 400.

[0041] Similarly, a pump body can also be set inside the spraying wastewater collection pool 302 to transport the water collected inside it to the processing unit 400. In addition, according to the actual situation of different coal yards, the spraying wastewater collection pool 302 can be set at a location where more spraying water is used, such as next to the coal conveying trestle, so that it is easier to collect the flushing water and spraying water used by the coal conveying trestle.

[0042] Specifically, the processing unit 400 includes a primary sedimentation tank 401 and a flocculation sedimentation tank 402 ; the primary sedimentation tank 401 is connected to the flocculation sedimentation tank 402 ; the water inside the rainwater tank 301 can be transported to the primary sedimentation tank 401 through the rainwater pump 303 .

[0043] Of course, the spraying wastewater collection tank 302 is also connected to the primary sedimentation tank 401, so that the rainwater collected in the rainwater tank 301 can be transported to the primary sedimentation tank 401 through the rainwater pump 303, and the spraying wastewater collected in the spraying wastewater collection tank 302 can also be transported to the primary sedimentation tank 401 through the pump body, and both can complete preliminary sedimentation inside the primary sedimentation tank 401.

[0044] Furthermore, a second transfer pump 403 is provided inside the primary sedimentation tank 401 , and the second transfer pump 403 is connected to the flocculation sedimentation tank 402 through a transfer pipe 404 .

[0045] The water that has completed the preliminary sedimentation in the preliminary sedimentation tank can be transported to the flocculation sedimentation tank 402 through the second transfer pump 403 for further treatment.

[0046] The rest of the structure is the same as that of Example 1.

[0047] Example 3, reference Figure 3 This embodiment is different from the above embodiments in that: a pipeline mixer 405 is provided on the transfer pipe 404, and the pipeline mixer 405 is connected to a coagulant pipeline 406; and a coagulant aid pipeline 407 is connected to the flocculation sedimentation tank 402.

[0048] Among them, the coagulant can directly enter the pipeline mixer 405 and mix with the water from the preliminary sedimentation tank inside the pipeline mixer 405. Then, as the water from the preliminary sedimentation tank enters the flocculation sedimentation tank 402, the coagulant increases the ion concentration in the solution, reduces the double layer thickness of the colloidal particles, lowers the zeta potential, reduces the repulsive force between particles, and promotes the aggregation of colloidal particles. At the same time, the coagulant is adsorbed on the surface of the colloidal particles, neutralizes part of its charge, reduces electrostatic repulsion, and makes the particles easy to approach and adsorb to each other.

[0049] Adding coagulant to the flocculation sedimentation tank 402 through the coagulant pipeline 407 can effectively remove harmful substances such as suspended matter, pigments, heavy metal ions, etc. in the water and improve the water quality.

[0050] Specifically, the water-using end 200 is further provided with a second clean water tank 204 connected to the first clean water tank 201 ; and the flocculation sedimentation tank 402 is connected to the second clean water tank 204 .

[0051] The second clean water tank 204 can be used as an intermediate storage unit to adjust the water output according to the demand changes of the water user 200 to ensure the water supply. At the same time, it also provides a certain operational flexibility for the flocculation sedimentation tank 402. For example, when the flocculation sedimentation tank 402 is subjected to a sudden high-concentration sewage impact, the second clean water tank 204 can play a buffering role to avoid pollution of the first clean water tank 201.

[0052] The first transfer pump 103 , the water supply pump 203 , the rainwater pump 303 , and the second transfer pump 403 are all lift pumps.

[0053] The rest of the structure is the same as that of Example 2.

[0054] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, improvements, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, without undue experimentation, the development effort will be a routine task of design, fabrication, and production.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-source water supply system for a coal plant, characterized by: include, A sedimentation unit (100) for collecting and treating coal yard equipment wastewater; A water end (200) connected to the precipitation unit (100); as well as, A collection unit (300) for collecting rainwater and coal yard spray wastewater; a processing unit (400), connected to the collecting unit (300), and used for processing the wastewater collected by the collecting unit (300); The processing unit (400) is connected to the water use end (200) and can process the collected rainwater and coal yard spray wastewater and then supply them to the water use end (200).

2. The multi-source water supply system for a coal plant as claimed in claim 1, characterized in that: The sedimentation unit (100) comprises a first sedimentation tank (101) and a second sedimentation tank (102). After the wastewater is precipitated inside the first sedimentation tank (101), it can be transported to the second sedimentation tank (102) for secondary sedimentation.

3. The multi-source water supply system for a coal plant as claimed in claim 2, characterized in that: A first transfer pump (103) is disposed inside the first sedimentation tank (101), and the first transfer pump (103) is capable of transferring water in the first sedimentation tank (101) to the second sedimentation tank (102).

4. The multi-source water supply system for a coal plant as claimed in claim 3, characterized in that: The water-using end (200) comprises a first clear water tank (201) and a water supply main pipe (202); A water supply pump (203) is arranged inside the first clear water tank (201), and the water supply pump (203) is connected to the water supply main pipe (202); The first sedimentation tank (101) and the second sedimentation tank (102) are both connected to the water supply main pipe (202).

5. The multi-source water supply system for a coal plant as claimed in claim 3 or 4, characterized in that: The collection unit (300) includes a rainwater pool (301) and a spray wastewater collection pool (302); A rainwater pump (303) is arranged inside the rainwater pool (301), and the rainwater pump (303) can transport the water inside the rainwater pool (301) to the processing unit (400).

6. The multi-source water supply system for a coal plant as claimed in claim 5, characterized in that: The processing unit (400) includes a primary sedimentation tank (401) and a flocculation sedimentation tank (402); The primary sedimentation tank (401) is connected to the flocculation sedimentation tank (402); The water inside the rainwater pool (301) can be transported to the primary sedimentation tank (401) through a rainwater pump (303).

7. The multi-source water supply system for a coal plant as claimed in claim 6, characterized in that: A second transfer pump (403) is disposed inside the primary sedimentation tank (401), and the second transfer pump (403) is connected to the flocculation sedimentation tank (402) via a transfer pipe (404).

8. The multi-source water supply system for a coal plant as claimed in claim 7, characterized in that: The transfer pipe (404) is provided with a pipeline mixer (405), and the pipeline mixer (405) is connected to a coagulant pipeline (406); The flocculation sedimentation tank (402) is connected to a coagulant aid pipeline (407).

9. The multi-source water supply system for a coal plant according to claim 7 or 8, characterized in that: The water-using end (200) is also provided with a second clean water tank (204) connected to the first clean water tank (201); The flocculation sedimentation tank (402) is connected to the second clear water tank (204).

10. The multi-source water supply system for a coal plant as claimed in claim 9, characterized in that: The first transfer pump (103), the water supply pump (203), the rainwater pump (303), and the second transfer pump (403) are all lift pumps.

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