Pond effluent biological treatment unit

Abstract

The utility model discloses a pond tail water biological treatment unit, include: treatment groove, its both ends are equipped with water inlet and water outlet respectively, with the direction of water outlet opposite water inlet as right side, biological treatment device, including a plurality of micro electric field subassembly, a plurality of micro electric field subassembly are arranged in treatment groove along horizontal direction interval in proper order, and micro electric field subassembly includes electrode part and is used for the conductive honeycomb board of denitrifying bacteria adhesion, and the thickness direction of conductive honeycomb board is horizontal, and conductive honeycomb board is equipped with a plurality of honeycomb hole, and honeycomb hole is through -hole. When using, the pond tail water enters the treatment groove from the water inlet, and is discharged from the water outlet after passing through a plurality of micro electric field subassembly along the horizontal direction, during, the denitrifying bacteria that adheres to the conductive honeycomb board can carry out the nitrogen removal treatment to the pond tail water, and the pond tail water does not need to circulate and flow in the treatment groove, reduces the time of pond tail water and stays in the treatment groove, is favorable for improving the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a biological treatment unit for pond tailwater. Background Technology

[0002] Pond wastewater refers to the wastewater discharged during aquaculture due to changes in water quality caused by factors such as the metabolism of farmed animals, feed residues, drug use, and various biological activities in the water. To reduce the use of fresh water, lower aquaculture costs, and minimize environmental pollution, the treatment method for pond wastewater has shifted from direct discharge to treatment and recycling.

[0003] Pond effluent treatment equipment typically includes multiple treatment units, such as units for sedimentation and filtration, units for denitrification, and units for removing heavy metal ions. The denitrification unit conventionally uses the activated sludge process to cultivate denitrifying bacteria. However, the activated sludge process requires controlling the continuous circulation of wastewater within the sludge tank for an extended period, resulting in low treatment efficiency. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a biological treatment unit for pond tailwater.

[0005] The pond tailwater biological treatment unit according to an embodiment of the present invention includes: The treatment tank has an inlet and an outlet at each end, with the outlet relative to the inlet being considered as the right side. A biological treatment device includes multiple micro-electric field components, which are arranged sequentially and spaced apart in a treatment tank along the transverse direction. Each micro-electric field component includes an electrode component and a conductive honeycomb plate for attaching denitrifying bacteria. The thickness direction of the conductive honeycomb plate is transverse, and the conductive honeycomb plate has multiple honeycomb holes, which are through holes.

[0006] The pond tailwater biological treatment unit according to the present utility model has at least the following technical effects: When in use, the pond tailwater enters the treatment tank from the inlet, passes through multiple micro electric field components laterally, and is discharged from the outlet. During this period, the denitrifying bacteria attached to the conductive honeycomb plate can denitrify the pond tailwater. The pond tailwater does not need to circulate in the treatment tank, reducing the time the pond tailwater stays in the treatment tank and improving the treatment efficiency.

[0007] According to some embodiments of the present invention, the honeycomb holes are arranged with an axial tilt.

[0008] According to some embodiments of the present invention, the axial directions of the honeycomb holes of two adjacent conductive honeycomb plates are not parallel.

[0009] According to some embodiments of this utility model, the electrode component is a mesh electrode.

[0010] According to some embodiments of the present invention, the diameter of the honeycomb holes located on the upper part of the conductive honeycomb plate is larger than the diameter of the honeycomb holes located on the lower part of the conductive honeycomb plate.

[0011] According to some embodiments of this utility model, the conductive honeycomb plate is a conductive ceramic component.

[0012] According to some embodiments of the present invention, the edge of the conductive honeycomb plate is provided with a support frame, and the support frame is connected to the processing groove.

[0013] According to some embodiments of the present invention, the electrode component and the support frame are detachably connected to the processing tank.

[0014] According to some embodiments of the present invention, the top of the support frame is provided with a lifting lug.

[0015] According to some embodiments of the present invention, the top of the processing tank is provided with a removable top cover.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front sectional view of the biological treatment unit for pond tailwater according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the conductive honeycomb panel from the left side; In the attached image: 100-Treatment tank; 110-Inlet; 120-Outlet; 200-Micro electric field component; 210-Electrode component; 220-Conductive honeycomb panel; 221-Support frame; 222-Lifting lug; 300-Top cover. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number, while "above," "below," "within," etc., are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] In related technologies, pond effluent is treated by natural sedimentation or a combination of natural sedimentation and biodegradation. While natural sedimentation has a large treatment capacity and high efficiency, it is less effective in treating water with excess nutrients after feed addition and cannot achieve the desired purification effect. In contrast, the combination of natural sedimentation and biodegradation can treat water with excess nutrients after feed addition and achieve the desired purification effect, but the treatment capacity is smaller and the efficiency is lower.

[0022] This utility model provides a biological treatment unit for pond tailwater, which can achieve the desired purification effect while maintaining high treatment efficiency.

[0023] The following is for reference. Figure 1 and Figure 2 This invention describes a pond tailwater biological treatment unit according to an embodiment of the present invention.

[0024] The pond tailwater biological treatment unit of this utility model includes a treatment tank 100 and a biological treatment device.

[0025] Reference Figure 1 The treatment tank 100 is a horizontally extending strip with a rectangular cross-section. The two ends of the treatment tank 100 are respectively provided with an inlet 110 and an outlet 120. The inlet 110 can be connected to the sedimentation and filtration unit of the pond effluent treatment equipment, and the outlet 120 can be connected to the heavy metal ion removal unit of the pond effluent treatment equipment. The position of the outlet 120 relative to the inlet 110 is considered to be to the right.

[0026] The biological treatment device includes multiple micro-electric field components 200, which are arranged laterally and spaced apart within the treatment tank 100. Each micro-electric field component 200 includes an electrode component 210 and a conductive honeycomb plate 220 for attaching denitrifying bacteria. The electrode component 210 and the conductive honeycomb plate 220 are arranged laterally and spaced apart. The thickness direction of the conductive honeycomb plate 220 is laterally oriented, and the conductive honeycomb plate 220 has multiple honeycomb holes, which are through holes. The pond effluent biological treatment unit also includes a power supply component, which has a positive output terminal and a negative output terminal. One of the positive and negative output terminals is electrically connected to the electrode component 210 via a wire, and the other is electrically connected to the conductive honeycomb plate 220 via a wire, thereby forming a micro-electric field between the electrode component 210 and the conductive honeycomb plate 220. The strength of the micro-electric field can be 0.5 V / cm to inhibit the proliferation of aerobic bacteria, while enriching electroactive denitrifying bacteria and promoting biofilm formation to achieve better denitrification.

[0027] In operation, pond effluent enters the treatment tank 100 through the inlet 110, passes laterally through multiple micro-electric field components 200, and is discharged from the outlet 120. During this process, denitrifying bacteria attached to the conductive honeycomb plate 220 denitrify the pond effluent. The pond effluent does not need to circulate within the treatment tank 100, reducing its residence time and improving treatment efficiency. This invention can shorten the denitrification cycle to 12 hours, while the traditional activated sludge method requires more than 24 hours.

[0028] In some embodiments of this invention, the honeycomb pores are axially inclined. The inclined honeycomb pores reduce the shear force exerted by the water flow on the biofilm attached to the pore walls, preventing biofilm detachment caused by high shear force. The axial direction of the honeycomb pores can be downward from left to right, upward from left to right, forward from left to right, or backward from left to right, etc., and is not limited to lateral extension.

[0029] In some embodiments of this utility model, the axial directions of the honeycomb holes of two adjacent conductive honeycomb plates 220 are not parallel. For two adjacent conductive honeycomb plates 220, the axial directions of the honeycomb holes of the upstream conductive honeycomb plate 220 and the downstream conductive honeycomb plate 220 are not parallel. Taking the axial direction of the honeycomb holes of the upstream conductive honeycomb plate 220 as an example, the axial direction of the honeycomb holes of the downstream conductive honeycomb plate 220 can be an upward tilt from left to right, a forward tilt from left to right, or a backward tilt from left to right, etc., and is not laterally extended and not tilted upward from left to right. In this way, the multiple conductive honeycomb plates 220 have a stronger disturbance effect on the water flow, reduce the difference in substance concentration at various parts of the water flow, and help improve the treatment efficiency.

[0030] In some embodiments of this invention, the electrode component 210 is a mesh electrode. This allows the electrode component 210 to discharge evenly while minimizing obstruction to water flow, enabling the pond tailwater to pass smoothly through the electrode component 210 and the conductive honeycomb plate 220.

[0031] In some embodiments of this invention, the diameter of the honeycomb holes on the upper part of the conductive honeycomb plate 220 is larger than the diameter of the honeycomb holes on the lower part of the conductive honeycomb plate 220. The upper layer has large-diameter, low-conductivity holes, while the lower layer has small-diameter, high-conductivity holes, forming a three-dimensional electric field gradient. This optimizes the enrichment of denitrifying bacteria in different potential regions, resulting in a higher enrichment of denitrifying bacteria in the lower layer. This is suitable for situations where the nitrogen content in the upper layer of wastewater is usually lower than that in the lower layer.

[0032] In some embodiments of this invention, the conductive honeycomb plate 220 is a conductive ceramic component. A carrier made of conductive ceramic material is beneficial for the formation of biofilms.

[0033] In some embodiments of this utility model, reference is made to Figure 2 The conductive honeycomb panel 220 has a support frame 221 at its edge, which is connected to the processing groove 100. The support frame 221 is made of stainless steel or other metal materials, which improves structural stability and makes it less likely to be damaged by bumps during the assembly and disassembly of the conductive honeycomb panel 220.

[0034] In some embodiments of this utility model, the electrode component 210 and the support frame 221 are detachably connected to the treatment tank 100. Both the mesh electrode and the support frame 221 can be detachably mounted in the treatment tank 100 via insert connection, bolt connection, or other suitable methods. The detachable structure between the plate-like object and the tank is a conventional technique in the art, and its specific structure will not be described in detail here. After a period of use, the mesh electrode and the conductive honeycomb plate 220 can be removed for cleaning to prevent contaminants from clogging the mesh openings of the mesh electrode or the honeycomb openings of the conductive honeycomb plate 220.

[0035] In some embodiments of this utility model, the top of the support frame 221 is provided with a lifting lug 222. This separation of the support frame and the processing groove 100 facilitates the use of lifting equipment to lift the conductive honeycomb panel 220.

[0036] In some embodiments of this utility model, the top of the treatment tank 100 is provided with a detachable top cover 300. The top cover 300 and the treatment tank 100 can be detachably connected by insert connection, bolt connection or other suitable means. The detachable structure between the tank and the cover is a conventional means in the art, and its specific structure will not be described in detail here. In this way, the top cover 300 can be closed during use to prevent external debris from falling into the treatment tank 100. When it is necessary to clean the mesh electrode and the conductive honeycomb plate 220, the top cover 300 can be removed first to facilitate operation.

[0037] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A biological treatment unit for pond effluent, characterized in that, include: The treatment tank has an inlet and an outlet at each end, with the outlet relative to the inlet being considered as the right side. A biological treatment device includes multiple micro-electric field components, which are arranged sequentially and spaced apart in a treatment tank along the transverse direction. Each micro-electric field component includes an electrode component and a conductive honeycomb plate for attaching denitrifying bacteria. The thickness direction of the conductive honeycomb plate is transverse, and the conductive honeycomb plate has multiple honeycomb holes, which are through holes.

2. The pond effluent biological treatment unit according to claim 1, characterized in that: The honeycomb holes are arranged at an axial angle.

3. The pond effluent biological treatment unit according to claim 2, characterized in that: The axial directions of the honeycomb holes in two adjacent conductive honeycomb plates are not parallel.

4. The pond effluent biological treatment unit according to claim 1, characterized in that: The electrode component is a mesh electrode.

5. The pond effluent biological treatment unit according to claim 1, characterized in that: The diameter of the honeycomb holes located on the upper part of the conductive honeycomb plate is larger than the diameter of the honeycomb holes located on the lower part of the conductive honeycomb plate.

6. The pond effluent biological treatment unit according to claim 1, characterized in that: The conductive honeycomb panel is a conductive ceramic component.

7. The pond effluent biological treatment unit according to claim 6, characterized in that: The conductive honeycomb plate has a support frame at its edge, and the support frame is connected to the processing groove.

8. The pond effluent biological treatment unit according to claim 7, characterized in that: The electrode components and the support frame are detachably connected to the processing tank.

9. The pond effluent biological treatment unit according to claim 8, characterized in that: The top of the support frame is equipped with lifting lugs.

10. The pond effluent biological treatment unit according to claim 8, characterized in that: The processing tank is equipped with a removable top cover.

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