Wastewater comprehensive utilization device for papermaking enterprises

Abstract

The invention relates to the technical field of wastewater treatment and utilization, in particular to a comprehensive wastewater utilization device for papermaking enterprises, which comprises a wastewater collection pool, one side of the wastewater collection pool is provided with an upper treatment mechanism for guiding out and treating upper water, and the other side of the wastewater collection pool is provided with a lower treatment mechanism for guiding out and treating lower water. A middle-layer treatment mechanism for guiding out and treating middle-layer water is arranged on one side, far away from the middle-layer treatment mechanism, of the wastewater collection pool, and a guiding assembly for guiding a treatment agent into the bottom end of the inner side of the wastewater collection pool is arranged on one side of the wastewater collection pool. Through the combined action of the wastewater collection tank, the sedimentation tank, the upper-layer treatment mechanism and the middle-layer treatment mechanism, wastewater at different layers in the wastewater collection tank can be led out after precipitation substances are independently removed, chemicals with different pertinence are added, different substances in the wastewater are treated in a targeted manner, the dosage of the chemicals is reduced, and the treatment effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment and utilization, and in particular to a wastewater comprehensive utilization device for a papermaking enterprise. Background Art

[0002] Various types of paper products produced by various papermaking enterprises are an indispensable part of modern social production and daily life. Due to the needs of paper production, a large amount of wastewater will be generated, including pulping and cooking wastewater, washing wastewater, bleaching wastewater and paper machine white water.

[0003] Since the wastewater generated in the papermaking process has complex composition and poor biodegradability, it is difficult to treat industrial wastewater and is one of the main sources of industrial pollution in my country. Generally, this type of wastewater contains a large amount of wood cellulose, suspended matter, organic matter, toxic substances, acid-base substances, etc.

[0004] For the sake of environmental protection and reducing water consumption, most papermaking companies choose to reuse wastewater after treating it. However, most of the wastewater treatment and utilization devices used by such papermaking companies are unable to separately extract and treat different water layers of wastewater. In wastewater, wood cellulose and various suspended solids, organic matter, toxic substances, etc. are suspended in different positions in the water body. If various treatment chemicals are directly added, it is impossible to carry out targeted treatment of wastes in different water layers, resulting in the chemical agents dissolving in a large amount of wastewater, diluting the agent content, reducing the treatment effect, and increasing the amount of chemical agents used, which increases costs. Summary of the invention

[0005] The purpose of the present invention is to provide a wastewater comprehensive utilization device for papermaking enterprises to solve the problem that the wastewater treatment and utilization devices used in existing papermaking enterprises cannot separately extract and treat different water layers of wastewater, so that when adding various treatment chemicals, it is impossible to carry out targeted treatment of wastes in different water layers, resulting in the chemical agents dissolving in a large amount of wastewater, diluting the agent content, reducing the treatment effect, and increasing the cost.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a wastewater comprehensive utilization device for papermaking enterprises, including a wastewater collecting tank, an upper layer treatment mechanism for exporting and treating the upper layer water body is arranged on one side of the wastewater collecting tank, a middle layer treatment mechanism for exporting and treating the middle layer water body is arranged on the side of the wastewater collecting tank away from the middle layer treatment mechanism, an introduction component for introducing treatment agents into the inner bottom end of the wastewater collecting tank is arranged on one side of the wastewater collecting tank, a sedimentation tank connected to the inner bottom end of the wastewater collecting tank is arranged on the side of the wastewater collecting tank away from the introduction component, and a spraying mechanism for adding agents into the sedimentation tank is arranged above the sedimentation tank.

[0007] As a further improvement of the present technical solution, the upper treatment mechanism includes a connecting seat, an outlet pipe and a treatment tank assembly. The connecting seat is arranged in contact with the outer wall of the wastewater collection tank, the outlet pipe is arranged on the connecting seat, and the water inlet end of the outlet pipe penetrates the wall of the wastewater collection tank, the connection between the outlet pipe and the wastewater collection tank is located in the upper half of the wall of the wastewater collection tank, and a pump body for water outlet is arranged on the outlet pipe, which will not be elaborated here. The treatment tank assembly is arranged outside the side wall of the wastewater collection tank, and the treatment tank assembly is located directly below the water outlet end of the outlet pipe.

[0008] As a further improvement of the present technical solution, the treatment tank assembly includes a receiving tank, an addition tank and an outlet pipe. The receiving tank is arranged in contact with the side wall of the wastewater collection tank and is located directly below the outlet end of the dewatering pipe. A semi-baffle plate is provided at the end of the receiving tank. The addition tank is provided on the semi-baffle plate of the receiving tank, and the addition tank is provided with a receiving tank pipe that passes through the baffle plate and is connected to the receiving tank. The outlet pipe is provided at the bottom end of the side wall of the receiving tank near the adding tank.

[0009] As a further improvement of the present technical solution, the middle-level treatment mechanism includes a water absorption channel, a U-shaped conduit and a treatment tank assembly. The U-shaped conduit is arranged on the side wall of the wastewater collection tank, and one end of the U-shaped conduit is inserted into the middle of the inner side of the wastewater collection tank. A pump body is arranged on the U-shaped conduit, which is not described here. The treatment tank assembly is arranged in contact with the outer wall of the wastewater collection tank, and the other end of the U-shaped conduit is inserted into the treatment tank assembly. The water absorption channel is arranged on the outside of the end of the U-shaped conduit located in the wastewater collection tank. The water absorption channel is a flat pipe and is horizontally placed outside the pipe mouth of the U-shaped conduit, so that the water absorption channel is horizontally placed in the middle part of the inner side of the wastewater collection tank.

[0010] As a further improvement of the present technical solution, the treatment tank assembly includes a collecting tank, a medicine storage tank and a dewatering pump pipe. The collecting tank is arranged on a side of the wastewater collection tank away from the upper treatment mechanism. The medicine storage tanks are arranged in a group of two on the collecting tank, and the dewatering pump pipe is arranged on one side of the bottom end of the collecting tank.

[0011] As a further improvement of the present technical solution, the import assembly includes an external mounting frame, an import pipe and a working pump. The external mounting frame is arranged on the outer wall of the wastewater collection tank, the import pipe is arranged on the external mounting frame, the working pump is arranged at the bottom corner of the outer wall of the wastewater collection tank, and the working pump is connected to the import pipe.

[0012] As a further improvement of the present technical solution, the inlet pipe includes a bent pipe connected to a working pump and a discharge pipe arranged on the bent pipe. The discharge pipe portion of the inlet pipe adheres to the side wall of the wastewater collection tank and is inserted into the bottom end of the inner side of the wastewater collection tank, so that the treatment agent introduced into the wastewater collection tank by the working pump directly enters the water body at the bottom layer of the wastewater collection tank.

[0013] As a further improvement of the present technical solution, the spraying mechanism includes a mounting cross frame and a spraying pipe, the mounting cross frame is horizontally arranged above the sedimentation tank, the spraying pipe is arranged on the mounting cross frame, and the spraying end of the spraying pipe faces the sedimentation tank below.

[0014] Compared with the prior art, the present invention provides a wastewater comprehensive utilization device for papermaking enterprises, which has the following beneficial effects:

[0015] Through the combined action of the wastewater collection tank, the sedimentation tank, the upper treatment mechanism and the middle treatment mechanism, the present invention can, after removing the precipitated materials separately, guide out the wastewater at different levels inside the wastewater collection tank and add different targeted agents respectively, so as to treat different substances inside the wastewater in a targeted manner, reduce the dosage of agents and increase the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0018] Figure 3 It is the structural distribution diagram of the wastewater collection tank and the sedimentation tank in the present invention;

[0019] Figure 4 It is a structural schematic diagram of the middle-level processing mechanism of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the upper processing mechanism of the present invention;

[0021] Figure 6 It is a schematic diagram of the structure of the introduction component of the present invention.

[0022] In the figure: 1. Wastewater collection tank; 2. Inlet assembly; 201. External mounting frame; 202. Inlet pipe; 203. Working pump; 3. Sedimentation tank; 4. Spraying mechanism; 401. Mounting cross frame; 402. Spraying pipe; 5. Connecting seat; 6. Export pipe; 7. Treatment tank assembly; 701. Receiving tank; 702. Adding tank; 703. Water outlet pipe; 8. Water suction channel; 9. U-shaped conduit; 10. Treatment tank assembly; 1001. Collection tank; 1002. Drug storage tank; 1003. Export pump pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Embodiment 1

[0026] Reference Figure 1-6 A wastewater comprehensive utilization device for papermaking enterprises, in order to be able to export water bodies of different water layers of wastewater and carry out targeted treatment, reduce the amount of reagents used and increase the treatment effect, it is arranged here including a wastewater collecting pool 1, one side of the wastewater collecting pool 1 is provided with an upper layer treatment mechanism for exporting and treating the upper layer water body, the side of the wastewater collecting pool 1 away from the middle layer treatment mechanism is provided with a middle layer treatment mechanism for exporting and treating the middle layer water body, one side of the wastewater collecting pool 1 is provided with an introduction component 2 for introducing treatment reagents into the inner bottom end of the wastewater collecting pool 1, the side of the wastewater collecting pool 1 away from the introduction component 2 is provided with a sedimentation tank 3 connected with the inner bottom end of the wastewater collecting pool 1, and a spraying mechanism 4 for adding reagents into the sedimentation tank 3 is provided above the sedimentation tank 3.

[0027] The upper treatment mechanism includes a connecting seat 5, an outlet pipe 6 and a treatment tank assembly 7. The connecting seat 5 is arranged in contact with the outer wall of the wastewater collection tank 1, the outlet pipe 6 is arranged on the connecting seat 5, and the water inlet end of the outlet pipe 6 passes through the wall of the wastewater collection tank 1. The connection between the outlet pipe 6 and the wastewater collection tank 1 is located in the upper half of the wall of the wastewater collection tank 1. The outlet pipe 6 is provided with a pump body for water outlet, which will not be elaborated here. The treatment tank assembly 7 is arranged outside the side wall of the wastewater collection tank 1, and the treatment tank assembly 7 is located directly below the outlet end of the outlet pipe 6, and the upper half of the water inside the wastewater collection tank 1 can be introduced into the treatment tank assembly 7 for treatment through the outlet pipe 6.

[0028] The treatment tank assembly 7 includes a receiving tank 701, an addition tank 702 and an outlet pipe 703. The receiving tank 701 is arranged in contact with the side wall of the wastewater collection tank 1 and is located directly below the outlet end of the outlet pipe 6. A semi-shielding plate is arranged at the end of the receiving tank 701. The addition tank 702 is arranged on the semi-shielding plate of the receiving tank 701, and the adding tank 702 is provided with a receiving tank 701 pipeline that penetrates the baffle and is connected. The outlet pipe 703 is arranged at the bottom end of the side wall of the receiving tank 701 near the adding tank 702. When the upper layer of wastewater enters the receiving tank 701, the adding tank 702 can be used to introduce a reagent that reacts to the substance with the highest content in the upper layer of wastewater into the receiving tank 701 to complete the targeted treatment of the upper layer of wastewater. After the treatment is completed, the treated wastewater can be discharged outwardly using the outlet pipe 703.

[0029] The middle-level treatment mechanism includes a water suction channel 8, a U-shaped conduit 9 and a treatment tank assembly 10. The U-shaped conduit 9 is arranged on the side wall of the wastewater collection tank 1, and one end of the U-shaped conduit 9 is inserted into the middle of the inner side of the wastewater collection tank 1. A pump body is arranged on the U-shaped conduit 9, which is not described here. The treatment tank assembly 10 is arranged in contact with the outer wall of the wastewater collection tank 1, and the other end of the U-shaped conduit 9 is inserted into the treatment tank assembly 10. The water suction channel 8 is arranged on the outside of the end of the U-shaped conduit 9 located in the wastewater collection tank 1. The water suction channel 8 is a flat pipe and is horizontally placed outside the pipe mouth of the U-shaped conduit 9, so that the water suction channel 8 is horizontally placed in the middle part of the inner side of the wastewater collection tank 1. The horizontally placed water suction channel 8 can horizontally suck the middle-level wastewater in the wastewater collection tank 1 into the U-shaped conduit 9 and export it, which is convenient for extracting the middle-level water body of the wastewater.

[0030] The treatment tank assembly 10 includes a collecting tank 1001, a drug storage tank 1002 and a dewatering pump pipe 1003. The collecting tank 1001 is arranged on a side of the wastewater collection pool 1 away from the upper treatment mechanism. Two drug storage tanks 1002 are arranged in a group on the collecting tank 1001. The dewatering pump pipe 1003 is arranged on one side of the bottom end of the collecting tank 1001. When the middle layer wastewater enters the collecting tank 1001, the drug storage tank 1002 is used to introduce a reagent that reacts to the substance with the highest content in the middle layer wastewater into the collecting tank 1001. After completing the targeted treatment of the middle layer wastewater, the dewatering pump pipe 1003 is opened to dewater the treated wastewater to the outside for reuse.

[0031] In this embodiment, when in use, the wastewater is first introduced into the wastewater collection tank 1 and the sedimentation tank 3 by using the introduction component 2, and the precipitated reagent is introduced into the sedimentation tank 3 by using the spraying mechanism 4, so that part of the reaction occurs and precipitates in the sedimentation tank 3. After the wastewater is allowed to stand for a period of time, the pump body on the outlet pipe 6 can be started, and the upper layer of water in the wastewater collection tank 1 can be exported to the receiving tank 701 by using the outlet pipe 6. At this time, the adding tank 702 can be opened to introduce the reagent that reacts with the substance with the highest content in the upper layer of wastewater into the receiving tank 701, so as to complete the targeted treatment of the upper layer of wastewater. After the treatment is completed, the treated wastewater can be discharged outwardly through the outlet pipe 703, and the pump body on the U-shaped catheter 9 can be started at the same time, and the water absorption channel 8 at the end of the U-shaped catheter 9 can be used to slowly absorb the middle layer water in the wastewater collection pool 1 and introduce it into the collection tank 1001, and then the medicine storage tank 1002 is opened to introduce the reagent that reacts to the substance with the highest content in the middle layer wastewater into the collection tank 1001 to complete the targeted treatment of the middle layer wastewater. After the treatment is completed, the outlet pump pipe 1003 can be opened to discharge the treated wastewater in the collection tank 1001 and reuse it.

[0032] Embodiment 2

[0033] like Figure 1-6As shown, this embodiment is basically the same as the first embodiment. Preferably, in order to be able to carry out the precipitation reaction separately, remove the precipitated substances in the wastewater, and prevent the sediment from accumulating in the main pool and affecting the water discharge and reaction, an introduction component 2 is provided here, including an external mounting frame 201, an introduction pipe 202 and a working pump 203. The external mounting frame 201 is arranged on the outer wall of the wastewater collection pool 1, the introduction pipe 202 is arranged on the external mounting frame 201, and the working pump 203 is arranged at the bottom corner of the outer wall of the wastewater collection pool 1, and the working pump 203 is connected to the introduction pipe 202, and can be connected to the external pipe through the working pump 203, and introduced into the wastewater collection pool 1 through the working pump 203 and the introduction pipe 202.

[0034] The inlet pipe 202 includes a bend pipe connected to the working pump 203 and a discharge pipe arranged on the bend pipe. The discharge pipe part of the inlet pipe 202 is in contact with the side wall of the wastewater collection tank 1 and is inserted into the bottom end of the inner side of the wastewater collection tank 1, so that the treatment agent introduced into the wastewater collection tank 1 by the working pump 203 directly enters the water body at the bottom layer of the wastewater collection tank 1.

[0035] The spraying mechanism 4 includes a mounting cross frame 401 and a spraying pipe 402. The mounting cross frame 401 is horizontally arranged above the sedimentation tank 3. The spraying pipe 402 is arranged on the mounting cross frame 401, and the spraying end of the spraying pipe 402 is facing the sedimentation tank 3 below. A baffle for shielding the connection is provided at the connection between the sedimentation tank 3 and the wastewater collection tank 1. The agent can be sprayed into the sedimentation tank 3 below through the spraying pipe 402, which is convenient for chemical reactions in which some reactants are precipitates, allowing the precipitates to settle in the sedimentation tank 3. At the same time, the baffle can prevent the precipitates from sliding into the wastewater collection tank 1, thereby reducing the impact on the wastewater in the wastewater collection tank 1.

[0036] In this embodiment, after the wastewater enters the wastewater collection tank 1 through the working pump 203 and the introduction pipe 202, the wastewater in the wastewater collection tank 1 will simultaneously enter the sedimentation tank 3, and the spraying pipe 402 can be used to spray the precipitation reaction agent into the sedimentation tank 3 to allow the sediment to accumulate in the sedimentation tank 3. After the sediment is removed, the subsequent targeted treatment of the upper water body and the middle water body can be continued.

[0037] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wastewater comprehensive utilization device for a papermaking enterprise, characterized in that: The invention comprises a wastewater collection tank (1), wherein an upper layer treatment mechanism for guiding out upper layer water and treating it is arranged on one side of the wastewater collection tank (1), a middle layer treatment mechanism for guiding out middle layer water and treating it is arranged on the side of the wastewater collection tank (1) away from the middle layer treatment mechanism, an introduction component (2) for introducing treatment reagents into the inner bottom end of the wastewater collection tank (1) is arranged on one side of the wastewater collection tank (1), a sedimentation tank (3) connected to the inner bottom end of the wastewater collection tank (1) is arranged on the side of the wastewater collection tank (1) away from the introduction component (2), and a spraying mechanism (4) for adding reagents into the sedimentation tank (3) is arranged above the sedimentation tank (3).

2. The wastewater comprehensive utilization device for papermaking enterprises according to claim 1 is characterized in that: The upper treatment mechanism comprises a connection seat (5), an outlet pipe (6) and a treatment tank assembly (7); the connection seat (5) is arranged in contact with the outer wall of the wastewater collection tank (1); the outlet pipe (6) is arranged on the connection seat (5), and the water inlet end of the outlet pipe (6) penetrates the wall of the wastewater collection tank (1); the connection between the outlet pipe (6) and the wastewater collection tank (1) is located in the upper half of the wall of the wastewater collection tank (1); the outlet pipe (6) is provided with a pump body for water outlet, which will not be described in detail here; the treatment tank assembly (7) is arranged outside the side wall of the wastewater collection tank (1), and the treatment tank assembly (7) is located directly below the water outlet end of the outlet pipe (6).

3. The wastewater comprehensive utilization device for papermaking enterprises according to claim 2 is characterized in that: The treatment tank assembly (7) comprises a receiving tank (701), an addition tank (702) and a water outlet pipe (703); the receiving tank (701) is arranged in close contact with the side wall of the wastewater collection tank (1) and is located directly below the water outlet end of the outlet pipe (6); a semi-shielding plate is arranged at the end of the receiving tank (701); the addition tank (702) is arranged on the semi-shielding plate of the receiving tank (701), and the addition tank (702) is provided with a receiving tank (701) pipeline that passes through the shielding plate and is connected; the water outlet pipe (703) is arranged at the bottom end of the side wall of the receiving tank (701) close to the addition tank (702).

4. The wastewater comprehensive utilization device for papermaking enterprises according to claim 1 is characterized in that: The middle-level treatment mechanism comprises a water suction channel (8), a U-shaped conduit (9) and a treatment tank assembly (10). The U-shaped conduit (9) is arranged on the side wall of the wastewater collection tank (1), and one end of the U-shaped conduit (9) is inserted into the middle of the inner side of the wastewater collection tank (1). A pump body is arranged on the U-shaped conduit (9), which is not described in detail here. The treatment tank assembly (10) is arranged in contact with the outer wall of the wastewater collection tank (1), and the other end of the U-shaped conduit (9) is inserted into the treatment tank assembly (10). The water suction channel (8) is arranged outside the end of the U-shaped conduit (9) located in the wastewater collection tank (1). The water suction channel (8) is a flat pipe and is horizontally arranged outside the pipe mouth of the U-shaped conduit (9), so that the water suction channel (8) is horizontally arranged in the middle part of the inner side of the wastewater collection tank (1).

5. The wastewater comprehensive utilization device for papermaking enterprises according to claim 4 is characterized in that: The treatment tank assembly (10) comprises a collection tank (1001), a medicine storage tank (1002) and a discharge pump pipe (1003); the collection tank (1001) is arranged on a side of the wastewater collection tank (1) away from the upper treatment mechanism; two medicine storage tanks (1002) are arranged on the collection tank (1001) in a group; and the discharge pump pipe (1003) is arranged on one side of the bottom end of the collection tank (1001).

6. The wastewater comprehensive utilization device for papermaking enterprises according to claim 1 is characterized in that: The introduction component (2) comprises an external mounting frame (201), an introduction pipe (202) and a working pump (203); the external mounting frame (201) is arranged on the outer wall of the wastewater collection tank (1); the introduction pipe (202) is arranged on the external mounting frame (201); the working pump (203) is arranged at the bottom corner of the outer wall of the wastewater collection tank (1); and the working pump (203) is connected to the introduction pipe (202).

7. The wastewater comprehensive utilization device for papermaking enterprises according to claim 6 is characterized in that: The introduction pipe (202) comprises a bend pipe connected to the working pump (203) and a discharge pipe arranged on the bend pipe. The discharge pipe portion of the introduction pipe (202) is in contact with the side wall of the wastewater collection tank (1) and is inserted into the bottom end of the wastewater collection tank (1), so that the treatment agent introduced into the wastewater collection tank (1) by the working pump (203) directly enters the water body at the bottom layer of the wastewater collection tank (1).

8. The wastewater comprehensive utilization device for papermaking enterprises according to claim 1 is characterized in that: The spraying mechanism (4) comprises a placement cross frame (401) and a spraying pipe (402), wherein the placement cross frame (401) is horizontally arranged above the sedimentation tank (3), and the spraying pipe (402) is arranged on the placement cross frame (401), and the spraying end of the spraying pipe (402) faces the sedimentation tank (3) below.

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