Wastewater treatment device

Abstract

The utility model provides a wastewater treatment device which comprises an outer ring, a middle ring, an inner ring, a water inlet pipe, an inclined plate settling zone, a water outlet pipe and a microporous aeration disc, the device is provided with an outer ring, a middle ring and an inner ring which are communicated with one another, the inner ring is an aerobic zone, an inclined plate settling zone is arranged between the outer ring and the middle ring, and anoxic zones are arranged between the inner ring and the middle ring and between the inner ring and the outer ring; according to the utility model, the aerobic zone, the anaerobic zone and the inclined plate settling zone are integrally designed, so that the size of the device is reduced, and the device is convenient to transport and carry.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment equipment, and particularly relates to a wastewater treatment device. Background Art

[0002] The sewage biological treatment process is a relatively special one in the sewage treatment process, also known as the activated sludge method. The activated sludge method can be divided into aerobic method, anaerobic method, etc. In an aerobic biological sewage treatment system, microorganisms utilize the dissolved oxygen in water to oxidize and degrade the organic pollutants in water, and then perform the separation operation of microorganisms and water to achieve the purpose of purifying sewage; in the existing activated sludge method treatment process, generally, the aerobic zone, anaerobic zone, and inclined plate sedimentation zone are separated independently and connected by pipelines. Therefore, this method occupies a relatively large volume, and since the sewage tank is not convenient to move, it is not convenient to carry and transfer the sewage treatment system. Content of the Utility Model

[0003] The purpose of the utility model is to design a wastewater treatment device to solve the problems raised in the background art. To achieve the above purpose, the utility model provides the following technical solutions: including an outer ring, a middle ring, and an inner ring. The bottom of the outer ring is connected to a water inlet pipe. The bottom of the inner ring is connected to the inside of the outer ring. The middle ring is sleeved on the inner ring. An inclined plate sedimentation zone is provided between the inner ring and the outer ring. The bottom of the middle ring is connected to the inside of the outer ring. The middle ring is connected to the inner wall of the outer ring through a first support frame. The top of the outer ring is provided with a water outlet pipe. A microporous aeration disk is fixedly connected to the inner bottom of the inner ring.

[0004] Further, a water outlet weir is provided on the upper part of the outer ring, and the bottom plate of the water outlet weir is located below the water outlet pipe.

[0005] Further, a number of water outlet notches are provided on the water outlet weir.

[0006] Further, the top of the outer ring is flush with the top of the middle ring, and the top of the inner ring is located below the water outlet weir.

[0007] Further, an annular cushion layer is provided on the upper part of the outer ring, and the water outlet weir is fixedly connected to the inner wall of the outer ring through the annular cushion layer.

[0008] Further, a number of handle auxiliary blocks are circumferentially distributed on the top of the middle ring.

[0009] Further, a second support frame is provided on the outer wall of the inner ring, and the middle ring is connected to the inner ring through the second support frame.

[0010] Further, the bottom of the inner ring is connected to the bottom of the outer ring through a number of support blocks.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The present utility model is provided with an outer ring, a middle ring and an inner ring that are interconnected. The inner ring is an aerobic zone, the area between the outer ring and the middle ring is an inclined plate sedimentation zone, and the areas between the inner ring and the middle ring and between the inner ring and the outer ring are anoxic zones. Therefore, the present utility model integrates the aerobic zone, the anaerobic zone and the inclined plate sedimentation zone, thereby reducing the volume of the device and making the device convenient for transportation and handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0015] Wherein: 1, effluent weir; 2, handle auxiliary block; 3, inclined plate sedimentation zone; 4, microporous aeration disc; 5, support block; 6, water inlet pipe; 7, outer ring; 8, first support frame; 9, middle ring; 10, second support frame; 11, bottom plate; 12, annular cushion layer; 13, water outlet pipe; 14, inner ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in combination with the accompanying drawings and preferred embodiments, describe in detail the specific embodiments, structures, features and their effects of the present utility model as follows.

[0017] Embodiment: Please refer to Figure 1, a wastewater treatment device, comprising an outer ring 7, a middle ring 9 and an inner ring 14. The bottom of the outer ring 7 is connected to a water inlet pipe 6. The bottom of the inner ring 14 is connected to the inside of the outer ring 7. The middle ring 9 is sleeved on the inner ring 14. An inclined plate sedimentation area 3 is provided between the inner ring 14 and the outer ring 7. The bottom of the middle ring 9 is connected to the inside of the outer ring 7. The middle ring 9 is connected to the inner wall of the outer ring 7 through a first support frame 8. The top of the outer ring 7 is provided with a water outlet pipe 13. A microporous aeration disk 4 is fixedly connected to the inner bottom of the inner ring 14. Among them, the specific structure of the inclined plate in the inclined plate sedimentation area 3 can be a common structure, and there is no need to elaborate here; before the device is used, sludge is inoculated on the outer ring 7 and the inner ring 14. Flocculent sludge (providing suspended microorganisms) is inoculated on the outer ring 7, while the inner ring 14 inoculates the sludge in fixed fillers (providing fixed microorganisms); in addition, the inner ring 14 is an aerobic zone, the area between the outer ring 7 and the middle ring 9 is the inclined plate sedimentation area 3, and the areas between the inner ring 14 and the middle ring 9 and between the inner ring 14 and the outer ring 7 are anaerobic zones; therefore, when sewage needs to be purified, the sewage will flow in the inner ring 14 under the action of the microporous aeration disk 4 (by adjusting the flow rate of the microporous aeration disk 4, a negative pressure is generated at the bottom of the inner ring 14, thereby causing the sewage to flow from bottom to top in the inner ring 14), and flow back to the bottom of the outer ring 7 from the top of the inner ring 14. The flowing-back sewage will flow into the top of the inner ring 14 again through the bottom of the inner ring 14, thus realizing the self-backflow of the sewage. During this process, the sludge will precipitate in the inclined plate sedimentation area 3; therefore, through the combination of the outer ring 7, the middle ring 9 and the inner ring 14, that is, the integrated design of the aerobic zone, the anaerobic zone and the inclined plate sedimentation area 3, the volume of the device is reduced, making the device easy to transport and handle; in addition, this device also realizes the combination of suspended microorganisms and fixed microorganisms, improving the concentration and variety of microorganisms. In addition, it couples aerobic nitrification, anoxic denitrification and sedimentation of sludge and water separation in the activated sludge process, realizing the synchronous removal of various pollutants; and the self-backflow of the sewage dilutes the influent concentration, reduces the water quality fluctuation of the system, synchronously realizes the sludge backflow, improves the sludge concentration and the impact resistance of the system, and realizes the backflow synchronously through the mechanism optimization using aeration, reducing the energy consumption and cost of sewage treatment.

[0018] In this embodiment, a water outlet weir 1 is provided at the upper part of the outer ring 7. The bottom plate 11 of the water outlet weir 1 is located below the water outlet pipe 13. A number of water outlet gaps are provided on the water outlet weir 1 to facilitate the discharge of the purified sewage. Moreover, an annular cushion layer 12 is provided at the upper part of the outer ring 7. The water outlet weir 1 is fixedly connected to the inner wall of the outer ring 7 through the annular cushion layer 12, which is convenient for the replacement and installation of the water outlet weir 1. The top of the outer ring 7 is flush with the top of the middle ring 9, and the top of the inner ring 14 is located below the water outlet weir 1 to prevent the sewage from flowing out from the top of the outer ring 7. A number of handle auxiliary blocks 2 are circumferentially distributed on the top of the middle ring 9 to facilitate the disassembly and assembly of the middle ring 9. A second support frame 10 is provided on the outer wall of the inner ring 14. The middle ring 9 is connected to the inner ring 14 through the second support frame 10 to ensure the uniformity of the gap between the inner ring 14 and the middle ring 9, which is beneficial to improving the uniform flow of the sewage. The bottom of the inner ring 14 is connected to the bottom of the outer ring 7 through a number of support blocks 5, so that the sewage flows into the inner ring 14 through the gaps between the support blocks 5.

[0019] Working principle

[0020] Therefore, when the sewage needs to be purified, the sewage first flows in from the water inlet pipe 6 and flows into the inner ring 14 under the action of the microporous aeration disc 4. Then it flows back to the bottom of the outer ring 7 from the top of the inner ring 14, and the flowing-back sewage will flow into the top of the inner ring 14 again through the bottom of the inner ring 14, thus realizing the self-recirculation of the sewage. During this process, the sludge will precipitate in the inclined plate sedimentation area 3. Therefore, through the combination of the outer ring 7, the middle ring 9 and the inner ring 14, that is, the integrated design of the aerobic zone, the anaerobic zone and the inclined plate sedimentation area 3, the volume of the device is reduced, making the device convenient for transportation and handling.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are only for the purpose of illustration.

[0022] The above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A wastewater treatment device, characterized in that: The invention comprises an outer ring (7), a middle ring (9) and an inner ring (14), wherein the bottom of the outer ring (7) is connected to a water inlet pipe (6), the bottom of the inner ring (14) is connected to the interior of the outer ring (7), the middle ring (9) is sleeved on the inner ring (14), an inclined plate sedimentation area (3) is provided between the inner ring (14) and the outer ring (7), the bottom of the middle ring (9) is connected to the interior of the outer ring (7), the middle ring (9) is connected to the inner wall of the outer ring (7) through a first support frame (8), a water outlet pipe (13) is provided at the top of the outer ring (7), and a microporous aeration disk (4) is fixedly connected to the inner bottom of the inner ring (14).

2. The wastewater treatment device according to claim 1, characterized in that: A water outlet weir (1) is provided at the upper portion of the outer ring (7), and a bottom plate (11) of the water outlet weir (1) is located below the water outlet pipe (13).

3. The wastewater treatment device according to claim 2, characterized in that: The water outlet weir (1) is provided with a plurality of water outlet gaps.

4. The wastewater treatment device according to claim 2, characterized in that: The top of the outer ring (7) is flush with the top of the middle ring (9), and the top of the inner ring (14) is located below the water outlet weir (1).

5. The wastewater treatment device according to claim 2, characterized in that: An annular cushion layer (12) is provided on the upper part of the outer ring (7), and the water outlet weir (1) is fixedly connected to the inner wall of the outer ring (7) via the annular cushion layer (12).

6. The wastewater treatment device according to claim 1, characterized in that: A plurality of handle auxiliary blocks (2) are distributed circumferentially on the top of the middle ring (9).

7. The wastewater treatment device according to claim 1, characterized in that: A second support frame (10) is provided on the outer wall of the inner ring (14), and the middle ring (9) is connected to the inner ring (14) via the second support frame (10).

8. The wastewater treatment device according to claim 1, characterized in that: The bottom of the inner ring (14) is connected to the bottom of the outer ring (7) via a plurality of support blocks (5).

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