Process waste gas deodorization device

Abstract

The utility model discloses a process waste gas deodorization device. The process waste gas deodorization device comprises a first deodorization mechanism, a second deodorization mechanism and a biochemical dosing mechanism, the first deodorization mechanism comprises a first deodorization tower and a first fan unit which are communicated in sequence; the second deodorization mechanism comprises a spray washing tower, a plurality of second deodorization towers and a second fan unit which are sequentially communicated with one another; the biochemical dosing mechanism is respectively connected with the first deodorization tower and the second deodorization tower. The utility model provides a new solution for foul waste gas generated in the sewage treatment process. Wherein the deodorization device comprises a first deodorization mechanism, a second deodorization mechanism and a biochemical dosing mechanism. The first deodorization mechanism and the second deodorization mechanism are different in composition and are mainly designed for odor treatment of a pretreatment area and a biochemical area for sewage treatment, the first deodorization mechanism is used for the biochemical area in the sewage treatment process, and the second deodorization mechanism is used for the pretreatment area in the sewage treatment process. By means of the design, on the basis that it is guaranteed that odor treatment is reliably completed, effective utilization of equipment resources is improved.

Description

Technical Field

[0001] The utility model relates to a deodorizing device, in particular to a process waste gas deodorizing device. Background Art

[0002] In recent years, more and more water purification plants have adopted fully or semi-underground layouts in urban construction planning. These sewage treatment units are clustered together in a centralized concrete structure, each sealed underground or semi-underground. Due to their underground and relatively enclosed nature, malodorous waste gases generated during the sewage treatment process tend to accumulate and become difficult to dilute and dissipate through natural ventilation. This results in high concentrations, slow diffusion, and significant treatment challenges. Furthermore, odors can corrode and reduce the service life of associated equipment, necessitating the deodorization of malodorous waste gases from sewage treatment processes.

[0003] Chinese utility model patent publication number CN219355770U discloses a sewage treatment pool deodorization device, relating to the field of deodorization devices. The device comprises a sealed cover, with positioning legs fixed to the bottom of the cover. Positioning screw holes are provided at the four corners of the legs. A mounting notch is provided at the top of the cover, within which a deodorization mechanism is fixed. The deodorization mechanism comprises a waterproof roof, support legs, an activated carbon plate, a positioning frame, an exhaust fan, and an exhaust duct. A limiting mechanism is fixed to the side wall of the exhaust duct. The limiting mechanism comprises a limiting latch, a movable slider, a mechanism housing, a return spring, and a drive rod. When gases are discharged from the sewage pool, they pass through the activated carbon plate, thereby absorbing odors.

[0004] Existing technologies for deodorizing malodorous waste gases generated by sewage treatment processes rely solely on activated carbon adsorption. This approach has numerous limitations. For one thing, activated carbon becomes saturated after adsorbing a fixed amount of malodorous substances, and irregular replacement can hinder deodorization. Furthermore, the adsorption efficiency of activated carbon is less than ideal, requiring further improvement. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a process waste gas deodorization device for deodorizing and treating malodorous waste gas generated in a sewage treatment process.

[0006] In order to solve the above problems, the present invention is implemented according to the following technical solutions:

[0007] The utility model provides a process waste gas deodorization device, which includes:

[0008] a first deodorizing mechanism, the first deodorizing mechanism comprising a first deodorizing tower and a first fan unit connected in sequence;

[0009] a second deodorizing mechanism, the second deodorizing mechanism comprising a spray scrubber, a plurality of second deodorizing towers, and a second fan unit that are sequentially connected;

[0010] A biochemical dosing mechanism is connected to the first deodorization tower and the second deodorization tower respectively.

[0011] Preferably, the first deodorizing tower and the second deodorizing tower adopt the same structure, and both include a deodorizing tower body;

[0012] The deodorizing tower body is provided with an atomizing spray component, a biological filler filter layer and a supporting structure in sequence from top to bottom. The biological filler filter layer is arranged on the top of the supporting structure, and the atomizing spray component is arranged above the biological filler filter layer.

[0013] Preferably, the deodorizing tower body is a fully enclosed structure made of fiberglass, and the deodorizing tower body includes an odor inlet at the bottom and an outlet at the top.

[0014] Preferably, the biochemical dosing mechanism includes a biochemical dosing box and a dosing pump, the dosing pump is connected to the biochemical dosing box through a pipeline, and the dosing pump is also connected to the atomizing spray components of the first deodorization tower and the second deodorization tower respectively through pipelines.

[0015] Preferably, the first air fan group includes three fans, and the three fans of the first air fan group are all connected to the air outlet of the first deodorization tower;

[0016] The second air unit includes two air fans, and the two air fans of the second air unit are connected to the air outlets of multiple second deodorization towers.

[0017] Preferably, the spray washing tower includes a spray tower body, and the spray tower body is made of 304 stainless steel;

[0018] The bottom of the spray tower body is provided with an odor inlet, and the top of the spray tower body is provided with an air outlet.

[0019] Preferably, a spray washing component is provided at the top of the spray tower body, and the spray washing component is located between the air outlet and the odor inlet of the spray tower body;

[0020] The spray washing tower further comprises a circulating water pump, which is connected to the spray washing component.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The utility model provides a process waste gas deodorization device, comprising a first deodorization mechanism, a second deodorization mechanism, and a biochemical dosing mechanism. The first deodorization mechanism comprises a first deodorization tower and a first fan unit, which are sequentially connected; the second deodorization mechanism comprises a spray scrubber, a plurality of second deodorization towers, and a second fan unit, which are sequentially connected; and the biochemical dosing mechanism is connected to the first and second deodorization towers, respectively.

[0023] This utility model provides a new solution to the malodorous waste gas generated during the sewage treatment process. The deodorization device comprises a first deodorization mechanism, a second deodorization mechanism, and a biochemical dosing mechanism. The first and second deodorization mechanisms differ in composition and are primarily designed for treating odors in the pretreatment and biochemical zones of sewage treatment. The first deodorization mechanism is used in the biochemical zone of the sewage treatment process, while the second deodorization mechanism is used in the pretreatment zone. This design ensures reliable odor treatment while improving the efficient utilization of equipment resources.

[0024] Specifically, deodorization towers utilize biological deodorization technology to achieve ideal deodorization and purification results, which cannot be matched by activated carbon adsorption deodorization methods. Furthermore, spray scrubbers can effectively handle high and fluctuating odor concentrations, reducing the load on subsequent biological treatment in deodorization towers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a structural diagram of a process waste gas deodorization device of the utility model;

[0027] In the picture:

[0028] 10- first deodorizing mechanism;

[0029] 20- second deodorizing mechanism;

[0030] 30-Biochemical dosing mechanism. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0032] like Figure 1 As shown, the preferred structure of a process waste gas deodorization device described in the present invention.

[0033] Currently, sewage purification plants around cities face problems such as complex odor components, high environmental requirements, and difficulty in treatment. While meeting safety production and relevant standards, it is necessary to improve the working environment of water purification plants and protect the physical and mental health of operators. To this end, this utility model provides a new solution to the malodorous waste gas generated during the sewage treatment process in sewage purification plants.

[0034] like Figure 1 As shown, the process waste gas deodorization device of the present invention includes a first deodorization mechanism, a second deodorization mechanism, and a biochemical dosing mechanism. The first deodorization mechanism comprises a first deodorization tower and a first fan unit, which are sequentially connected. The second deodorization mechanism comprises a spray scrubber, multiple second deodorization towers, and a second fan unit, which are sequentially connected. The biochemical dosing mechanism is connected to the first and second deodorization towers, respectively.

[0035] It should be noted that the process waste gas deodorization device of the present invention is mainly used for the treatment and disposal of malodorous waste gas in the sewage treatment process, and can be well applied to the use of the fully underground sewage treatment system.

[0036] The deodorization device consists of a first deodorization mechanism, a second deodorization mechanism, and a biochemical dosing mechanism. The first and second deodorization mechanisms differ in composition and are primarily designed for odor treatment in the pretreatment and biochemical zones of sewage treatment. The first deodorization mechanism is used in the biochemical zone of the sewage treatment process, while the second deodorization mechanism is used in the pretreatment zone. This design ensures reliable odor treatment while improving the efficient utilization of equipment resources. Specifically, a deodorization tower utilizes biological deodorization technology to achieve ideal deodorization and purification effects. This is unmatched by activated carbon adsorption deodorization methods. Furthermore, the spray scrubber can effectively cope with high and fluctuating odor concentrations, reducing the load on the subsequent biological treatment of the deodorization tower.

[0037] like Figure 1 As shown, the spray scrubber includes a spray tower body made of 304 stainless steel; an odor inlet is provided at the bottom of the spray tower body, and an outlet is provided at the top of the spray tower body. A spray scrubber is provided at the top of the spray tower body, located between the outlet and the odor inlet of the spray tower body; the spray scrubber also includes a circulating water pump connected to the spray scrubber.

[0038] Among them, the spray washing parts are generally composed of pipe components and multiple nozzles, which are used to spray the odor into the spray tower body.

[0039] Considering the high and fluctuating odor concentration in the pretreatment area, a spray scrubber was added to the deodorization area to ensure the stability of the biological deodorization bacteria and reduce the subsequent biological treatment load. This 304 stainless steel scrubber uses recycled water from the plant and is equipped with a circulating water pump and an online pH monitoring instrument.

[0040] like Figure 1 As shown, the first deodorization tower and the second deodorization tower adopt the same structure and both include a deodorization tower body; the interior of the deodorization tower body is sequentially provided with an atomizing spray component, a biological filler filter layer and a supporting structure from top to bottom, the biological filler filter layer is provided on the top of the supporting structure, and the atomizing spray component is provided above the biological filler filter layer.

[0041] The deodorizing tower is a fully enclosed structure made of fiberglass, featuring an odor inlet at the bottom and an outlet at the top. The biological deodorizing tower is the core of the deodorizing system. Constructed from fiberglass, the deodorizing tower is fully enclosed and equipped with appropriate inspection holes, air inlets, and outlets.

[0042] Specifically, the tower is divided into four zones: an upper atomizing spray system, a middle biofill filtration layer, a lower biofill support structure, and a bottom-most gas distribution and wastewater collection system. The deodorization tower achieves optimal deodorization by controlling surface load and residence time to ensure uniform odor distribution through the packing.

[0043] Biological filler is the key to the entire deodorization device. This patent uses biochar composite filler, which has high porosity, large effective area, good air and water permeability, and fast mass transfer rate. It is more conducive to the attachment, growth and reproduction of microorganisms on its surface, thereby achieving better odor purification effect.

[0044] The biochemical dosing mechanism includes a biochemical dosing box and a dosing pump. The dosing pump is connected to the biochemical dosing box through a pipeline. The dosing pump is also connected to the atomizing spray components of the first deodorization tower and the second deodorization tower through pipelines.

[0045] Biochemical dosing institutions use the reclaimed water from sewage treatment plants. In addition to adding biochemical agents, some auxiliary additives may also be used, such as pH regulators, nutrients, etc., to provide biologically suitable environmental conditions for the biological filler filter layer and promote its activity and efficiency.

[0046] It should be noted that in this field, a closed project refers to covering or capping the odor source that produces odor-causing gases, and transporting the odor generated by the odor source to the process waste gas deodorization device of the present invention through a collecting air duct for treatment.

[0047] Taking a fully underground water purification plant as an example, its main structure is located in the lower level. The existing concrete roof can be used as a cover to provide targeted supplemental enclosure for the partially open structure. The deodorization device of this utility model utilizes an odor collection and delivery pipeline, an air intake, and a first and second fan units. Odors are centrifugally pressurized by a negative pressure fan, then flow through stainless steel ducts into the first and second deodorization mechanisms. After being treated to meet standards, they are discharged through the fans.

[0048] In the specific implementation, all air intakes adopt point-type exhaust, and the collection pipes and delivery pipes in the factory are made of 304 stainless steel air ducts. A regulating valve and wind vane are installed at each air duct intake.

[0049] Among them, the first air group includes 3 fans, and the 3 fans of the first air group are all connected to the air outlet of the first deodorization tower; the second air group includes 2 fans, and the 2 fans of the second air group are connected to the air outlets of multiple second deodorization towers.

[0050] In the specific implementation, this patent has a total of 5 fans, including 2 deodorization fans in the pretreatment area and 3 deodorization fans in the biochemical area, all of which are made of corrosion-resistant fiberglass.

[0051] In a preferred embodiment, Figure 1 As shown, the second deodorization mechanism also includes a photocatalytic oxidation post-treatment device connected between the second deodorization tower and the second fan unit. Because the odor concentration in the pretreatment area of the sewage treatment is high, a deep treatment device, namely the photocatalytic oxidation post-treatment device, is added to prevent incomplete biological degradation when the odor concentration is abnormally high.

[0052] For other structures of the process waste gas deodorization device described in this embodiment, please refer to the prior art.

[0053] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A process waste gas deodorization device, characterized in that: The process waste gas deodorization device comprises: a first deodorizing mechanism, the first deodorizing mechanism comprising a first deodorizing tower and a first fan unit connected in sequence; a second deodorizing mechanism, the second deodorizing mechanism comprising a spray scrubber, a plurality of second deodorizing towers, and a second fan unit that are sequentially connected; A biochemical dosing mechanism is connected to the first deodorization tower and the second deodorization tower respectively.

2. A process waste gas deodorization device according to claim 1, characterized in that: The first deodorizing tower and the second deodorizing tower have the same structure and both include a deodorizing tower body; The deodorizing tower body is provided with an atomizing spray component, a biological filler filter layer and a supporting structure in sequence from top to bottom. The biological filler filter layer is arranged on the top of the supporting structure, and the atomizing spray component is arranged above the biological filler filter layer.

3. A process waste gas deodorization device according to claim 2, characterized in that: The deodorizing tower body is a fully enclosed structure made of glass fiber reinforced plastics, and comprises an odor inlet at the bottom and an air outlet at the top.

4. A process waste gas deodorization device according to claim 2, characterized in that: The biochemical dosing mechanism includes a biochemical dosing box and a dosing pump. The dosing pump is connected to the biochemical dosing box through a pipeline. The dosing pump is also connected to the atomizing spray components of the first deodorizing tower and the second deodorizing tower through pipelines.

5. The process waste gas deodorization device according to claim 2, characterized in that: The first air fan group includes three fans, and the three fans of the first air fan group are all connected to the air outlet of the first deodorization tower; The second air unit includes two air fans, and the two air fans of the second air unit are connected to the air outlets of multiple second deodorization towers.

6. The process waste gas deodorization device according to claim 1, characterized in that: The spray washing tower includes a spray tower body, and the spray tower body is made of 304 stainless steel; The bottom of the spray tower body is provided with an odor inlet, and the top of the spray tower body is provided with an air outlet.

7. A process waste gas deodorization device according to claim 6, characterized in that: A spray washing component is provided on the top of the spray tower body, and the spray washing component is located between the air outlet and the odor inlet of the spray tower body; The spray washing tower further comprises a circulating water pump, which is connected to the spray washing component.

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