Wastewater odor purification device for papermaking

Abstract

The utility model discloses a wastewater odor purification device for papermaking, and belongs to the technical field of wastewater treatment. Comprising a spraying purification tower and a wastewater treatment tank with a built-in sealing cavity, the spraying purification tower is communicated with the wastewater treatment tank through a waste gas conveying pipe, and a gas conveying fan is arranged on the waste gas conveying pipe; an odor neutralizer can be sprayed in the spraying purification tower, and a one-way gas inlet communicated with the sealing cavity is formed in the wastewater treatment tank; a water storage chamber, a first-stage wastewater chamber and a second-stage wastewater chamber which are independently sealed are arranged in the sealing cavity, and a water circulation mechanism is arranged among the water storage chamber, the first-stage wastewater chamber and the second-stage wastewater chamber; an overflow port higher than the top opening of the second-stage wastewater chamber is formed in the top of the first-stage wastewater chamber, a stepped purification box is arranged in the sealing cavity, and the stepped purification box is filled with an adsorbent. The wastewater odor purification device for papermaking solves the problems that an existing odor purification device is single in purification mode and not ideal in efficiency and effect.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a wastewater odor purification device for papermaking. Background Technology

[0002] The paper production process generates a large amount of wastewater containing numerous chemical components and producing significant amounts of foul-smelling odors, including ammonia and hydrogen sulfide. Direct discharge of this wastewater would severely pollute the atmosphere and surrounding environment. Furthermore, papermaking wastewater may require separate purification treatment. While some odor purification devices exist on the market, their methods are relatively simple, inefficient, and ineffective in purifying the odors.

[0003] Therefore, there is an urgent need for a purification device that can effectively purify the odor of wastewater. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wastewater odor purification device for papermaking, which solves the problems of the existing odor purification devices having a relatively simple purification method and unsatisfactory efficiency and effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wastewater odor purification device for papermaking, comprising a spray purification tower and a wastewater treatment tank with a built-in sealed cavity, wherein the spray purification tower and the wastewater treatment tank are connected by an exhaust gas conveying pipe, and an exhaust gas conveying fan is provided on the exhaust gas conveying pipe.

[0006] The spray purification tower is equipped with an odor neutralizing agent that can be sprayed inside, and the wastewater treatment tank is provided with a one-way air inlet that communicates with the sealed cavity.

[0007] The sealed cavity is equipped with an independently sealed water storage chamber, a primary wastewater chamber, and a secondary wastewater chamber, and a water circulation mechanism is provided between the water storage chamber, the primary wastewater chamber, and the secondary wastewater chamber;

[0008] The top of the primary wastewater chamber is provided with an overflow outlet that is higher than the top opening of the secondary wastewater chamber, and the sealed cavity is provided with a stepped purification box that can connect with the overflow outlet and the top opening of the secondary wastewater chamber. The stepped purification box is filled with adsorbent.

[0009] Optionally, the stepped purification box includes several purification boxes, the top of each purification box is provided with an inlet for connecting wastewater, and the bottom of each purification box is provided with a drain outlet.

[0010] The purification boxes are arranged vertically from top to bottom in a staggered manner; and the wastewater in the upper purification box can flow through the drain to the inlet of the adjacent purification box.

[0011] Optionally, the inner wall of the purification box is provided with several hydrophobic plates arranged at an angle downwards.

[0012] Optionally, the water circulation mechanism includes a first wastewater conduit connecting the primary wastewater chamber and the secondary wastewater chamber, and a second wastewater conduit connecting the water storage chamber and the primary wastewater chamber, and both the first wastewater conduit and the second wastewater conduit are equipped with water pumps capable of transporting wastewater.

[0013] Optionally, both the primary wastewater chamber and the secondary wastewater chamber are equipped with liquid level sensors.

[0014] Optionally, the wastewater treatment tank is provided with a sampling port that communicates with the primary wastewater chamber and the secondary wastewater chamber.

[0015] Optionally, the odor neutralizer is one or more of the following: acid-base solution, strong oxidant solution, plant extract, microbial deodorizer, and compound deodorizer.

[0016] Optionally, the adsorbent is one or more of activated carbon, diatomaceous earth, activated alumina, zeolite, fly ash, and bentonite.

[0017] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: Wastewater overflows from the overflow outlet of the primary wastewater chamber and flows to the stepped purification tank. The adsorbent inside the tank removes pollutants such as organic matter, pigments, and odor substances from the wastewater through physical adsorption, achieving wastewater purification. Furthermore, during this process, the flowing wastewater is fully exposed to the air, accelerating the release of odors. The released odors, under the action of the air-carrying fan, enter the spray purification tower through the exhaust gas delivery pipe. The odor neutralizing agent sprayed inside the tower reacts with the harmful chemical components in the odors, causing the harmful components to separate from the odors, thus achieving odor purification. The co-purification of wastewater and odors not only effectively improves purification efficiency but also enhances the purification effect. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the wastewater odor purification device for papermaking in a preferred embodiment of this utility model;

[0020] The components include: 1. Spray purification tower; 2. Wastewater treatment tank; 201. Sealed cavity; 202. One-way air inlet; 203. Water storage chamber; 204. Primary wastewater chamber; 2041. Overflow outlet; 205. Secondary wastewater chamber; 206. Sampling port; 3. Waste gas conveying pipe; 4. Gas conveying fan; 501. Purification box; 6. First wastewater conduit; 7. Second wastewater conduit; 8. Water pump; 9. Liquid level sensor. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] like Figure 1 As shown, a wastewater odor purification device for papermaking includes a spray purification tower 1 and a wastewater treatment tank 2 with a built-in sealed cavity 201. The spray purification tower 1 and the wastewater treatment tank 2 are connected by an exhaust gas conveying pipe 3, and an exhaust gas fan 4 is installed on the exhaust gas conveying pipe 3. The interior of the spray purification tower 1 can spray an odor neutralizing agent. The wastewater treatment tank 2 is provided with a one-way air inlet 202 that communicates with the sealed cavity 201. An independently sealed storage tank is provided inside the sealed cavity 201. A water circulation mechanism is provided between the water chamber 203, the primary wastewater chamber 204, and the secondary wastewater chamber 205, as well as between the water storage chamber 203, the primary wastewater chamber 204, and the secondary wastewater chamber 205. The top of the primary wastewater chamber 204 is provided with an overflow outlet 2041 that is higher than the top opening of the secondary wastewater chamber 205, and a stepped purification box that can connect with the overflow outlet 2041 and the top opening of the secondary wastewater chamber 205 is provided in the sealed cavity 201. The stepped purification box is filled with adsorbent.

[0024] The aforementioned air-transmitting fan 4 and spray purification tower 1 are both existing technologies. Specifically, the air-transmitting fan 4 can extract gas from the sealed cavity 201, while air can enter the sealed cavity 201 of the wastewater treatment tank 2 through the one-way air inlet 202, thereby forming a stable air circulation within the sealed cavity 201. Simultaneously, the sealed cavity 201 of the wastewater treatment tank 2 is equipped with a water storage chamber 203, a primary wastewater chamber 204, and a secondary wastewater chamber 205, all connected by a water circulation mechanism, enabling graded treatment of wastewater. Wastewater can overflow through the overflow port 2041 of the primary wastewater chamber 204 and flow into the stepped purification tank. The adsorbent in the stepped purification tank can treat the flowing wastewater through physical adsorption, effectively removing pollutants such as organic matter, pigments, and odors from the wastewater, thus improving the wastewater purification effect. During this process, the flowing wastewater is fully exposed to the air, which accelerates the release of odors from the wastewater. The released odors, under the action of the air supply fan 4, enter the spray purification tower 1 through the waste gas delivery pipe 3. The spray purification tower 1 sprays an odor neutralizing agent, which reacts with the harmful chemical components contained in the odor, causing the harmful components to separate from the odor, thereby achieving the effect of odor purification. The wastewater odor purification device in this technical solution can treat wastewater generated from papermaking through physical adsorption and chemical separation, with high efficiency and effective purification of wastewater and the odors generated from it.

[0025] Furthermore, such as Figure 1 As shown, the stepped purification box includes several purification boxes 501. The top of each purification box 501 is provided with an inlet for wastewater, and the bottom of each purification box 501 is provided with a drain outlet. Specifically, the several purification boxes 501 are arranged vertically from top to bottom in a staggered manner. The wastewater in the upper purification box 501 can flow through the drain outlet to the inlet of the adjacent purification box 501. That is, the wastewater overflowing from the overflow outlet 2041 can flow into the uppermost purification box 501, and can also flow from the uppermost purification box 501 through its bottom drain outlet to the adjacent purification box 501. This process is repeated to maximize the time that the wastewater is exposed to the air, allowing the odor in the wastewater to fully escape.

[0026] The above, such as Figure 1 As shown, the inner wall of the purification box 501 is provided with several downwardly arranged hydrophobic plates to guide the flow of wastewater.

[0027] Furthermore, such as Figure 1As shown, the water circulation mechanism includes a first wastewater conduit 6 connecting the primary wastewater chamber 204 and the secondary wastewater chamber 205, and a second wastewater conduit 7 connecting the water storage chamber 203 and the primary wastewater chamber 204. Both the first wastewater conduit 6 and the second wastewater conduit 7 are equipped with water pumps 8 capable of transporting wastewater. That is, one of the water pumps 8 can draw wastewater from the secondary wastewater chamber 205 to the primary wastewater chamber 204 through the first wastewater conduit; while the other water pump 8 can draw wastewater from the water storage chamber 203 to the primary wastewater chamber 204 through the second wastewater conduit, so as to replenish the primary wastewater chamber 204 with wastewater.

[0028] Meanwhile, both the primary wastewater chamber 204 and the secondary wastewater chamber 205 are equipped with level sensors 9. The level sensors 9 are existing technologies and can monitor the liquid level in the primary wastewater chamber 204 and the secondary wastewater chamber 205. The level sensors 9 can be electrically connected to the water pump 8 so that wastewater can be added to the primary wastewater chamber 204 by the water pump 8, ensuring that the wastewater in the primary wastewater chamber 204 can overflow from the overflow port 2041.

[0029] Furthermore, such as Figure 1 As shown, the wastewater treatment tank 2 is equipped with a sampling port 206 that connects to the primary wastewater chamber 204 and the secondary wastewater chamber 205. The sampling port 206 is a water pipe that connects the primary wastewater chamber 204 and the secondary wastewater chamber 205 separately, and a valve is installed on the water pipe. By opening the valve, the wastewater in the primary wastewater chamber 204 or the secondary wastewater chamber 205 can flow out, so as to facilitate the testing personnel to sample and test the wastewater in the primary wastewater chamber 204 and the secondary wastewater chamber 205 to check whether the wastewater meets the discharge standards.

[0030] In this technical solution, the odor neutralizer is one or more of the following: acid-base solution, strong oxidant solution, plant extract, microbial deodorizer, and compound deodorizer; the adsorbent is one or more of the following: activated carbon, diatomaceous earth, activated alumina, zeolite, fly ash, and bentonite.

[0031] Working Principle: The air blower 4 extracts gas from the sealed chamber 201, while air enters the sealed chamber 201 of the wastewater treatment tank 2 through the one-way air inlet 202, thus creating a stable air circulation within the sealed chamber 201. Simultaneously, the sealed chamber 201 of the wastewater treatment tank 2 is equipped with a water storage chamber 203, a primary wastewater chamber 204, and a secondary wastewater chamber 205, all connected by a water circulation mechanism, enabling graded treatment of wastewater. Wastewater overflows through the overflow port 2041 of the primary wastewater chamber 204 and flows into the stepped purification tank. The adsorbent in the stepped purification tank treats the flowing wastewater through physical adsorption, effectively removing pollutants such as organic matter, pigments, and odors, thus improving the wastewater purification effect. During this process, the flowing wastewater is fully exposed to the air, which accelerates the release of odors from the wastewater. The released odors are then transported by the air blower 4 through the waste gas delivery pipe 3 into the spray purification tower 1. The interior of the spray purification tower 1 is sprayed with an odor neutralizing agent, which reacts with the harmful chemical components contained in the odor, thereby separating the harmful components from the odor and achieving the effect of purifying the odor.

[0032] Meanwhile, during this process, the liquid level sensor 9 can monitor the liquid level in the primary wastewater chamber 204 and the secondary wastewater chamber 205. The liquid level sensor 9 can be electrically connected to the water pump 8, which can replenish wastewater in the primary wastewater chamber 204 in a timely manner, ensuring that the wastewater in the primary wastewater chamber 204 can overflow from the overflow port 2041. At the same time, the water pump 8 can draw wastewater from the secondary wastewater chamber 205 to the primary wastewater chamber 204 through the first wastewater pipe, so that the wastewater in the primary wastewater chamber 204 and the secondary wastewater chamber 205 can be continuously exchanged, effectively improving the purification effect of wastewater and odor.

[0033] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A wastewater odor purification device for papermaking, characterized in that: It includes a spray purification tower (1) and a wastewater treatment tank (2) with a built-in sealed cavity (201). The spray purification tower (1) and the wastewater treatment tank (2) are connected by a waste gas conveying pipe (3), and a gas conveying fan (4) is installed on the waste gas conveying pipe (3). The spray purification tower (1) is equipped with an odor neutralizing agent sprayed inside, and the wastewater treatment tank (2) is provided with a one-way air inlet (202) that communicates with the sealed cavity (201). The sealed cavity (201) is provided with an independently sealed water storage chamber (203), a primary wastewater chamber (204) and a secondary wastewater chamber (205), and a water circulation mechanism is provided between the water storage chamber (203), the primary wastewater chamber (204) and the secondary wastewater chamber (205); The top of the primary wastewater chamber (204) is provided with an overflow outlet (2041) that is higher than the top opening of the secondary wastewater chamber (205), and the sealed cavity (201) is provided with a stepped purification box that can connect with the overflow outlet (2041) and the top opening of the secondary wastewater chamber (205), and the stepped purification box is filled with adsorbent.

2. The waste water odor purification device for papermaking according to claim 1, characterized by: The stepped purification box includes several purification boxes (501), the top of the purification box (501) is provided with an inlet that can be connected to wastewater, and the bottom of the purification box (501) is provided with a drain outlet. Among them, several purification boxes (501) are arranged vertically from top to bottom in a staggered manner; and the wastewater in the purification box (501) placed at the top can flow through the drain to the inlet of the adjacent purification box (501).

3. The apparatus for purifying odors of papermaking wastewater according to claim 2, characterized by: The inner wall of the purification box (501) is provided with several hydrophobic plates arranged at an angle downwards.

4. The apparatus for purifying odors of papermaking wastewater according to claim 1, characterized by: The water circulation mechanism includes a first wastewater conduit (6) connecting the primary wastewater chamber (204) and the secondary wastewater chamber (205), and a second wastewater conduit (7) connecting the water storage chamber (203) and the primary wastewater chamber (204). Both the first wastewater conduit (6) and the second wastewater conduit (7) are equipped with water pumps (8) capable of transporting wastewater.

5. The apparatus for purifying odors of papermaking wastewater according to claim 1, characterized by: Both the primary wastewater chamber (204) and the secondary wastewater chamber (205) are equipped with level sensors (9).

6. The apparatus for purification of odors from papermaking wastewater according to claim 1, characterized by: The wastewater treatment tank (2) is provided with a sampling port (206) that is connected to the primary wastewater chamber (204) and the secondary wastewater chamber (205).

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