A water distribution system from a biochemical tank to a secondary sedimentation tank of an underground sewage treatment plant

Abstract

The utility model relates to sewage treatment technical field discloses a kind of water distribution system from biochemical pool to secondary sedimentation tank of underground sewage treatment plant, comprising: biochemical pool group, sewage is purified by biodegradation;Secondary sedimentation tank group, further purify sewage by sedimentation sludge;Water distribution warehouse, water distribution assembly is provided in water distribution warehouse, for the sewage in biochemical pool group is transferred to secondary sedimentation tank group;Water distribution assembly includes pipeline group, and pipeline group is provided with regulating metering assembly.The utility model passes through setting regulating metering assembly, so that the flow of sewage is stable in transfer process, also ensure that the flow of sewage into different secondary sedimentation tank is considerable;To this end, the purification effect of different secondary sedimentation tank has higher consistency, and it is beneficial to the sewage treatment effect of entire sewage treatment plant to be stable and up to standard;Using electromagnetic flowmeter cooperation opening degree control of electric butterfly valve, easily can realize the function of controlling multiple water distribution pipeline flow same.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically, a water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground wastewater treatment plant. Background Technology

[0002] To improve land utilization, underground wastewater treatment plants typically use rectangular sedimentation tanks to separate sludge from the effluent from the biological treatment tanks. However, due to limitations in the effective length of the sludge scraper, the length of rectangular sedimentation tanks cannot be too long; therefore, multiple sedimentation tanks are connected in parallel for production. The secondary sedimentation tanks typically use inlet distribution weirs, with operators manually adjusting the weir height based on experience to ensure similar inflow rates to each sedimentation tank group. However, this method suffers from poor stability and repeatability, and cannot respond promptly to fluctuations in inflow rate. This is especially pronounced when the biological treatment tank and secondary sedimentation tanks are arranged parallel to each other, with inflow from one side of the channel, highlighting inconsistencies in inflow volume and quality between the tank groups. These variations in the operational performance of each secondary sedimentation tank group contribute to differences in overall wastewater treatment plant performance, hindering the stable achievement of treatment standards. Utility Model Content

[0003] The purpose of this utility model is to provide a water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant, which solves the problems of inconsistent water flow, poor stability and repeatability, and inconsistent purification effects caused by the existing water distribution method in sewage treatment processes.

[0004] This utility model is achieved through the following technical solution: a water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant, comprising: The biological treatment tank group purifies wastewater through biodegradation; The secondary sedimentation tank group achieves mud-water separation by settling sludge. A water distribution tank, which is equipped with a water distribution component, is used to transfer sewage from the biological treatment tank group to the secondary sedimentation tank group; The water distribution assembly includes a pipeline group, on which a regulating metering component is installed.

[0005] To better realize this utility model, the biochemical pool group further includes a No. 1 biochemical pool, a No. 2 biochemical pool, a biochemical pool outlet channel, and an outlet weir. The sewage in the No. 1 and No. 2 biochemical pools flows into the biochemical pool outlet channel through the outlet weir.

[0006] To better realize this utility model, the outlet weir is further set at uniform intervals and at the same height along the outlet channel of the biochemical pool.

[0007] To better realize this utility model, the secondary sedimentation tank group further includes a No. 1 secondary sedimentation tank, a No. 2 secondary sedimentation tank, a No. 3 secondary sedimentation tank, a sludge channel, and a secondary sedimentation tank inlet channel. The No. 1 secondary sedimentation tank, the No. 2 secondary sedimentation tank, and the No. 3 secondary sedimentation tank are all connected to the sludge channel. The multiple secondary sedimentation tank inlet channels are respectively connected to the No. 1 secondary sedimentation tank, the No. 2 secondary sedimentation tank, and the No. 3 secondary sedimentation tank. One end of the pipeline group is connected to the effluent channel of the biological treatment tank, and the other end is connected to the secondary sedimentation tank inlet channel.

[0008] To better realize this utility model, the pipeline group further includes multiple water distribution pipelines, and the No. 1 secondary sedimentation tank, the No. 2 secondary sedimentation tank, and the No. 3 secondary sedimentation tank are respectively connected to different water distribution pipelines, and each water distribution pipeline is equipped with an adjustment and metering component.

[0009] To better realize this utility model, the regulating and metering component further includes an electromagnetic flow meter and an electric butterfly valve.

[0010] To better realize this utility model, the water distribution tank is further provided with an operating layer, an interlayer, and a bottom layer from top to bottom. The operating layer is higher than the outlet weir, and the outlet channel of the biochemical pool is lower than the pipeline group.

[0011] To better realize this utility model, a pipeline support is further installed on the side wall of the water distribution tank, and the pipeline support is used to support the water distribution pipeline.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) By setting up a regulating metering component, this utility model ensures that the flow rate of sewage is stable during the transfer process and that the flow rate of sewage into different secondary sedimentation tanks is similar; thereby ensuring that the purification effect of different secondary sedimentation tanks is highly consistent, which is conducive to the stable achievement of sewage treatment effect of the entire sewage treatment plant. (2) This utility model adopts equal-length water distribution pipeline connection to make the head loss uniform and the water inflow of each group of secondary sedimentation tanks consistent; on this basis, by using electromagnetic flowmeter in conjunction with electric butterfly valve opening control, it is easy to realize the function of controlling the flow of multiple water distribution pipelines to be the same. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the lower layer structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the upper structure of this utility model.

[0015] Figure 3 for Figure 1 CC cross-section view.

[0016] Figure 4 for Figure 1Sectional view of AA.

[0017] Figure 5 for Figure 1 Cross-sectional view of the middle section (BB).

[0018] Among them: 101-Biological treatment tank No. 1; 102-Biological treatment tank No. 2; 103-Interlayer; 104-Secondary sedimentation tank No. 1; 105-Secondary sedimentation tank No. 2; 106-Secondary sedimentation tank No. 3; 107-Sludge channel; 108-Regulating and metering components; 109-Water distribution pipeline; 110-Electromagnetic flow meter; 111-Electric butterfly valve; 112-Secondary sedimentation tank inlet channel; 113-Biological treatment tank outlet channel; 114-Outlet weir; 115-Pipeline support; 116-Operating layer; 117-Bottom layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0021] This embodiment provides a water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant, specifically as follows: Figures 1-3 As shown, it includes: The biological treatment tank group purifies wastewater through biodegradation; The secondary sedimentation tank group achieves mud-water separation by settling sludge. A water distribution tank, which is equipped with a water distribution component, is used to transfer sewage from the biological treatment tank group to the secondary sedimentation tank group; The water distribution assembly includes a pipeline group, on which an regulating metering component 108 is installed.

[0022] In the biological treatment tank group, microorganisms degrade organic pollutants in the wastewater, thus performing preliminary purification. Then, the preliminarily purified wastewater is transferred to the secondary sedimentation tank group through the pipeline group. In the secondary sedimentation tank group, the wastewater begins to settle due to gravity. At this time, the upper layer of water is relatively clear, while the lower layer of water is the settled sludge. When the sludge accumulates, it will also flow into the sludge channel 107. During cleaning, it is only necessary to pump the sludge from the sludge channel 107.

[0023] Because of the adjustment and metering component 108, the flow rate of sewage is stabilized during the transfer process, and the flow rate of sewage flowing into different secondary sedimentation tanks is also similar. This ensures that the purification effect of different secondary sedimentation tanks is highly consistent, which is conducive to the stable achievement of sewage treatment effect of the entire sewage treatment plant. Example

[0024] This embodiment further extends the above embodiment, specifically as follows: Figures 1-5 As shown, the biochemical pool group includes a No. 1 biochemical pool 101, a No. 2 biochemical pool 102, a biochemical pool outlet channel 113, and an outlet weir 114. Wastewater from the No. 1 biochemical pool 101 and the No. 2 biochemical pool 102 flows into the biochemical pool outlet channel 113 through the outlet weir 114. This embodiment only shows the No. 1 biochemical pool 101 and the No. 2 biochemical pool 102; in actual implementation, the number can be adjusted accordingly.

[0025] The secondary sedimentation tank group includes a No. 1 secondary sedimentation tank 104, a No. 2 secondary sedimentation tank 105, a No. 3 secondary sedimentation tank 106, a sludge channel 107, and a secondary sedimentation tank inlet channel 112. The No. 1 secondary sedimentation tank 104, No. 2 secondary sedimentation tank 105, and No. 3 secondary sedimentation tank 106 are all connected to the sludge channel 107. Multiple secondary sedimentation tank inlet channels 112 are respectively connected to the No. 1 secondary sedimentation tank 104, No. 2 secondary sedimentation tank 105, and No. 3 secondary sedimentation tank 106. One end of the pipeline group is connected to the biological treatment tank effluent channel 113, and the other end is connected to the secondary sedimentation tank inlet channel 112. This embodiment only shows the No. 1 secondary sedimentation tank 104, No. 2 secondary sedimentation tank 105, and No. 3 secondary sedimentation tank 106; in actual implementation, the number can be adjusted accordingly.

[0026] The pipeline group includes multiple water distribution pipelines 109. The No. 1 secondary sedimentation tank 104, the No. 2 secondary sedimentation tank 105, and the No. 3 secondary sedimentation tank 106 are respectively connected to different water distribution pipelines 109. Each water distribution pipeline 109 is equipped with an adjustment and metering component 108.

[0027] Wastewater from the effluent channel 113 of the biological treatment tank flows to the influent channel 112 of the secondary sedimentation tank through different water distribution pipelines 109, and then flows to the No. 1 secondary sedimentation tank 104, the No. 2 secondary sedimentation tank 105, and the No. 3 secondary sedimentation tank 106. Due to the installed regulating metering component 108, the amount of wastewater obtained in the No. 1 secondary sedimentation tank 104, the No. 2 secondary sedimentation tank 105, and the No. 3 secondary sedimentation tank 106 is basically the same, so that the purification load of multiple secondary sedimentation tanks is the same, thus ensuring consistent purification effect.

[0028] In another specific embodiment, the effluent weir 114 is evenly spaced and at the same height along the direction of the biological treatment tank effluent channel 113. This arrangement allows the sewage in biological treatment tank 101 and biological treatment tank 102 to be discharged into the biological treatment tank effluent channel 113 in a uniform and orderly manner.

[0029] In another specific embodiment, the regulating metering component 108 includes an electromagnetic flow meter 110 and an electric butterfly valve 111. The electromagnetic flow meter 110 is used to detect the flow rate in the water distribution pipeline 109. Since the multiple water distribution pipelines 109 are of equal length, the water loss during sewage transfer is uniform. Combined with the opening control of the electric butterfly valve 111, the function of controlling the flow rate of multiple water distribution pipelines 109 to be the same can be easily achieved.

[0030] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example

[0031] This embodiment further extends the above embodiment, specifically as follows: Figure 3 , Figure 4 As shown, the water distribution tank is arranged from top to bottom as follows: an operating layer 116, an interlayer 103, and a bottom layer 117. The operating layer 116 is higher than the effluent weir 114, and the effluent channel 113 of the biological treatment tank is lower than the pipeline assembly. Personnel can observe the wastewater purification process from the operating layer 116; using the elevated platform of the interlayer 103, personnel can inspect and maintain the regulating metering component 108 or the water distribution pipeline 109 from the interlayer 103.

[0032] The side wall of the water distribution tank is equipped with a pipeline support 115, which is used to support the water distribution pipeline 109 and prevent the water distribution pipeline 109 from bending, deforming, or even breaking and leaking.

[0033] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant, characterized in that, include: The biological treatment tank group purifies wastewater through biodegradation; The secondary sedimentation tank group achieves mud-water separation by settling sludge. A water distribution tank, which is equipped with a water distribution component, is used to transfer sewage from the biological treatment tank group to the secondary sedimentation tank group; The water distribution assembly includes a pipeline group, on which a regulating metering component (108) is installed.

2. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 1, characterized in that: The biochemical pool group includes a No. 1 biochemical pool (101), a No. 2 biochemical pool (102), a biochemical pool outlet channel (113), and an outlet weir (114). The sewage in the No. 1 biochemical pool (101) and the No. 2 biochemical pool (102) flows into the biochemical pool outlet channel (113) through the outlet weir (114).

3. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 2, characterized in that: The effluent weir (114) is set at uniform intervals and at the same height along the direction of the effluent channel (113) of the biochemical pool.

4. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 3, characterized in that: The secondary sedimentation tank group includes a No. 1 secondary sedimentation tank (104), a No. 2 secondary sedimentation tank (105), a No. 3 secondary sedimentation tank (106), a sludge channel (107), and a secondary sedimentation tank inlet channel (112). The No. 1 secondary sedimentation tank (104), the No. 2 secondary sedimentation tank (105), and the No. 3 secondary sedimentation tank (106) are all connected to the sludge channel (107). Multiple secondary sedimentation tank inlet channels (112) are respectively connected to the No. 1 secondary sedimentation tank (104), the No. 2 secondary sedimentation tank (105), and the No. 3 secondary sedimentation tank (106). One end of the pipeline group is connected to the biological treatment tank outlet channel (113), and the other end is connected to the secondary sedimentation tank inlet channel (112).

5. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 4, characterized in that: The pipeline group includes multiple water distribution pipelines (109). The No. 1 secondary sedimentation tank (104), the No. 2 secondary sedimentation tank (105), and the No. 3 secondary sedimentation tank (106) are respectively connected to different water distribution pipelines (109). Each water distribution pipeline (109) is equipped with an adjustment metering component (108).

6. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 5, characterized in that: The regulating metering component (108) includes an electromagnetic flowmeter (110) and an electric butterfly valve (111).

7. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 6, characterized in that: The water distribution tank is provided with an operating layer (116), an interlayer (103), and a bottom layer (117) from top to bottom. The operating layer (116) is higher than the effluent weir (114), and the effluent channel (113) of the biochemical pool is lower than the pipeline group.

8. The water distribution system from the biological treatment tank to the secondary sedimentation tank in an underground sewage treatment plant according to claim 1, characterized in that: The side wall of the water distribution chamber is equipped with a pipeline support (115), which is used to support the water distribution pipeline (109).

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