Pre-denitrification sewage treatment equipment

Abstract

The utility model discloses pre-denitrification sewage treatment equipment. The pre-denitrification sewage treatment equipment comprises a sewage treatment device, a stirring assembly and a stabilizing assembly, according to the pre-denitrification sewage treatment equipment disclosed by the utility model, the submersible stirrer in the anoxic tank can generate forward water flow power by virtue of the flow guide cover at the front end of the submersible stirrer after being started, so that sludge discharged from the sewage discharge barrel in the shielding cover is driven to flow to the upper end of the steel wire mesh disc and is crushed and cut by the steel wire mesh disc; according to the sewage treatment device, the sewage inlet pipe is arranged in the sedimentation tank, so that the uniformity of mixing of sludge flowing back in the sedimentation tank after crushing and slitting with sewage in the anoxic tank and sewage at the sewage inlet pipe is ensured, and then denitrification reaction is fully performed in the anoxic tank, and the sewage treatment effect is improved; the vertical column and the pressing plate which is fixed on the vertical column and is used for pressing the upper fixing hoop on the submersible mixer can be used for positioning the use position of the submersible mixer and pressing and constraining the submersible mixer in use so as to ensure the stability of the submersible mixer in use.

Description

A pre-denitrification wastewater treatment equipment Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a pre-denitrification wastewater treatment device. Background Technology

[0002] Pre-denitrification wastewater treatment equipment is a process device that removes nitrate nitrogen preferentially by placing the denitrification stage before the wastewater treatment process. Wastewater first enters the anoxic tank, then the aerobic tank, and the mixed liquor from the aerobic tank and the sludge from the sedimentation tank are simultaneously returned to the anoxic tank. The return of the mixed liquor allows the anoxic tank to obtain nitrates produced by nitrification in the aerobic tank, while the direct entry of the raw wastewater provides sufficient carbon source organic matter for denitrification in the anoxic tank, enabling the denitrification reaction to take place in the anoxic tank.

[0003] Existing pre-denitrification wastewater treatment equipment, such as the integrated pre-denitrification wastewater treatment device disclosed in publication number CN211688479U, although it can prevent the accumulation of impurities in the wastewater due to the fast flow of wastewater, which affects the wastewater treatment efficiency, makes it inconvenient to fully crush and mix the sludge and wastewater returned in the anoxic tank of this wastewater treatment device, which in turn makes the denitrification reaction after the sludge and wastewater are returned poor. Therefore, we propose a pre-denitrification wastewater treatment device. Summary of the Invention

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A pre-denitrification wastewater treatment device includes: a wastewater treatment unit, a mixing assembly, and a stabilizing assembly; the wastewater treatment unit includes an anoxic tank, an aerobic tank, a sedimentation tank, a sewage pipe connecting the sedimentation tank and the anoxic tank, a sewage pump installed on the sewage pipe, and a sealing cover movably installed on the anoxic tank; the mixing assembly includes a sewage discharge cylinder fixedly installed at the upper end of the sewage discharge pipe in the anoxic tank, a shield movably installed at the outer end of the sewage discharge cylinder, a wire mesh plate fixedly installed on one side of the shield, a submersible mixer movably installed on the other side of the shield, and a column fixedly installed in the anoxic tank; the stabilizing assembly includes a fixing frame fixedly installed at the lower part of the column, a lower support hoop fixedly installed at the upper part of the fixing frame, an upper fixing hoop fixedly installed at the upper end of the submersible mixer, and a pressing plate movably installed on the top of the upper fixing hoop.

[0007] Preferably, a sewage inlet pipe is also fixedly installed on one side of the anoxic pool, and a fixing cover is also fixedly installed on the sewage inlet pipe.

[0008] Preferably, both ends of the shield are also fixedly installed with support rods, and the bottom of the support rods is fixed inside the anoxic pool.

[0009] Preferably, the column is movably installed at the rear end of the submersible mixer, and a flow guide is fixedly installed at the front end of the submersible mixer.

[0010] Preferably, the upper fixing hoop is further provided with a slot, and the bottom of the pressing plate is matched and installed in the slot.

[0011] Preferably, the top of the pressing plate and the top of the column are respectively provided with mounting holes and threaded holes.

[0012] Preferably, screws are also movably installed in the mounting holes and threaded holes.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, the submersible mixer in the anoxic tank, after being started, can generate forward water flow power by relying on the guide hood at its front end, thereby driving the sludge discharged from the sewage discharge pipe in the shield to flow to the upper end of the wire mesh disc, and then crushing and cutting it by the wire mesh disc, thereby ensuring the uniformity of the mixing between the crushed and cut sludge returned from the sedimentation tank and the sewage in the anoxic tank and the sewage inlet pipe, so as to fully carry out the denitrification reaction in the anoxic tank and improve the sewage treatment effect;

[0015] 2. In this utility model, the lower support hoop supported at the bottom of the submersible mixer and the pressing plate fixed on the column to press the upper fixing hoop of the submersible mixer can both position the submersible mixer in use and press and restrain the submersible mixer in use to ensure its stability during use. Attached Figure Description

[0016] Figure 1 is an overall structural diagram of this utility model;

[0017] Figure 2 is a diagram of the internal structure of the anoxic tank of this utility model;

[0018] Figure 3 is a side sectional view of the anoxic tank of this utility model;

[0019] Figure 4 is an enlarged view of A in Figure 3 of this utility model;

[0020] Figure 5 is an enlarged view of B in Figure 3 of this utility model.

[0021] Figure label:

[0022] 100. Wastewater treatment equipment; 101. Anoxic tank; 102. Aerobic tank; 103. Sedimentation tank; 104. Sewage pipe; 105. Sewage pump; 106. Sealing cover;

[0023] 200. Mixing assembly; 201. Sewage discharge pipe; 202. Shielding cover; 203. Wire mesh tray; 204. Submersible mixer; 205. Column; 206. Sewage inlet pipe; 207. Fixing cover; 208. Support rod;

[0024] 300. Stabilizing component; 301. Fixing bracket; 302. Lower support clamp; 303. Upper fixing clamp; 304. Pressing plate; 305. Slot; 306. Mounting hole; 307. Threaded hole; 308. Screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0026] The following describes, with reference to the accompanying drawings, some embodiments of a pre-denitrification wastewater treatment device provided by this utility model.

[0027] Example 1:

[0028] As shown in Figures 1-5, the present invention provides a pre-denitrification wastewater treatment device, comprising: a wastewater treatment unit 100, a mixing assembly 200, and a stabilizing assembly 300; the wastewater treatment unit 100 includes an anoxic tank 101, an aerobic tank 102, a sedimentation tank 103, a sewage pipe 104 connecting the sedimentation tank 103 and the anoxic tank 101, a sewage pump 105 installed on the sewage pipe 104, and a sealing cover 106 movably installed on the anoxic tank 101; the mixing assembly 200 includes a sewage discharge cylinder 201 fixedly installed at the upper end of the sewage pipe 104 inside the anoxic tank 101, a shield 202 movably installed at the outer end of the sewage discharge cylinder 201, a wire mesh disc 203 fixedly installed on one side of the shield 202, a submersible mixer 204 movably installed on the other side of the shield 202, and a column 205 fixedly installed inside the anoxic tank 101; the stabilizing assembly 300 includes a fixing frame 30 fixedly installed at the lower part of the column 205. 1. A lower support hoop 302 is fixedly installed on the upper part of the fixed frame 301, an upper fixed hoop 303 is fixedly installed on the upper end of the submersible mixer 204, and a pressing plate 304 is movably installed on the top of the upper fixed hoop 303. A sewage inlet pipe 206 is also fixedly installed on one side of the anoxic pool 101. A fixed cover 207 is also fixedly installed on the sewage inlet pipe 206. Support rods 208 are fixedly installed at both ends of the cover 202, and the bottom of the support rods 208 is fixed inside the anoxic pool 101. A column 205 is movably installed at the rear end of the submersible mixer 204. A guide cover is fixedly installed at the front end of the submersible mixer 204. A slot 305 is also opened in the upper fixed hoop 303, and the bottom of the pressing plate 304 is matched and installed in the slot 305. The top of the pressing plate 304 and the top of the column 205 are respectively provided with mounting holes 306 and threaded holes 307. Screws 308 are movably installed in the mounting holes 306 and threaded holes 307.

[0029] Specifically, the pre-denitrification wastewater treatment equipment is a process device that removes nitrate nitrogen preferentially by advancing the denitrification stage in the wastewater treatment process. In this wastewater treatment device 100, the submersible mixer 204 in the anoxic tank 101 generates forward water flow force through its front-end guide shroud after startup. This drives the sludge discharged from the discharge pipe 201 inside the shield shroud 202 to flow to the upper end of the wire mesh disc 203, where it is crushed and cut by the wire mesh disc 203, thus ensuring the sedimentation... The sludge returned from the sedimentation tank 103 is crushed and cut, and then mixed evenly with the sewage in the anoxic tank 101 and the sewage inlet pipe 206. This ensures that denitrification can fully occur in the anoxic tank 101, improving the sewage treatment effect. The lower support hoop 302 supported at the bottom of the submersible mixer 204, and the pressing plate 304 fixed on the column 205 to press the upper fixing hoop 303 of the submersible mixer 204, can be used to position the submersible mixer 204 and can also be pressed. The submersible mixer 204 is restrained during use to ensure its stability. The shield 202 installed at the outer end of the sewage discharge pipe 201 is mainly used to transport the sludge returning from the sewage discharge pipe 104 into the shield 202, so that it can be dispersed by the submersible mixer 204 to ensure the uniformity of mixing. The fixed cover 207 installed on the sewage inlet pipe 206 is mainly used to allow the sewage entering the sewage inlet pipe 206 to be discharged downward under the obstruction of the fixed cover 207, so as to carry out a uniform mixing reaction with the sludge dispersed at the bottom. The support rods 208 installed at both ends of the shield 202 are mainly used to ensure the stability of the shield 202 during use. The fixed bracket 301 fixedly installed at the bottom of the lower support hoop 302 is mainly used to provide stable support for the lower support hoop 302. The slot 305 opened on the upper fixed hoop 303 is mainly used to match and connect with the bottom of the pressing plate 304, thereby ensuring the stable pressing of the upper fixed hoop 303 by the pressing plate 304, and thus ensuring the stability of the submersible mixer 204 during use.

[0030] Working principle and usage process of this utility model:

[0031] During wastewater treatment, the sludge in the sedimentation tank 103 is transported through the discharge pipe 104 to the discharge cylinder 201 in the anoxic tank 101. The sludge discharged upward from the discharge cylinder 201 is driven forward by the submersible mixer 204 on the outside of the shield 202 to impact the wire mesh disc 203 on one side of the shield 202. The wire mesh disc 203 breaks and cuts the sludge, so that after passing through the wire mesh disc 203, it is evenly mixed with the wastewater in the anoxic tank 101 and the wastewater discharged from the wastewater inlet pipe 206 through the fixed cover 207. This allows for a more uniform denitrification reaction in the anoxic tank 101, improving the wastewater treatment effect. At the same time, the lower support hoop 302 supporting the bottom of the submersible mixer 204 and the upper fixed hoop 303 pressed by the upper pressing plate 304 of the submersible mixer 204 can also ensure the stability of the submersible mixer 204 during use.

[0032] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pre-denitrification wastewater treatment device, characterized in that, include: Wastewater treatment device (100), stirring assembly (200), stabilizing assembly (300); the wastewater treatment device (100) includes an anoxic tank (101), an aerobic tank (102), a sedimentation tank (103), a sewage pipe (104) connecting the sedimentation tank (103) and the anoxic tank (101), a sewage pump (105) installed on the sewage pipe (104), and a sealing cover (106) movably installed on the anoxic tank (101); the stirring assembly (200) includes a sewage discharge cylinder (201) fixedly installed at the upper end of the sewage pipe (104) inside the anoxic tank (101), and a sewage discharge cylinder (201) outside the sewage discharge cylinder (201). The shield (202) is movably installed at one end, the wire mesh (203) is fixedly installed on one side of the shield (202), the submersible mixer (204) is movably installed on the other side of the shield (202), and the column (205) is fixedly installed inside the anoxic pool (101); the stabilizing component (300) includes a fixing frame (301) fixedly installed at the lower part of the column (205), a lower support hoop (302) fixedly installed at the upper part of the fixing frame (301), an upper fixing hoop (303) fixedly installed at the upper end of the submersible mixer (204), and a pressing plate (304) movably installed on the top of the upper fixing hoop (303).

2. The pre-denitrification wastewater treatment equipment according to claim 1, characterized in that, A sewage inlet pipe (206) is also fixedly installed on one side of the anoxic pool (101), and a fixing cover (207) is also fixedly installed on the sewage inlet pipe (206).

3. The pre-denitrification wastewater treatment equipment according to claim 1, characterized in that, Both ends of the shield (202) are fixedly installed with support rods (208), and the bottom of the support rods (208) is fixed inside the anoxic pool (101).

4. The pre-denitrification wastewater treatment equipment according to claim 1, characterized in that, The column (205) is movably installed at the rear end of the submersible mixer (204), and a flow guide is fixedly installed at the front end of the submersible mixer (204).

5. The pre-denitrification wastewater treatment equipment according to claim 1, characterized in that, The upper fixing hoop (303) is also provided with a slot (305), and the bottom of the pressing plate (304) is matched and installed in the slot (305).

6. The pre-denitrification wastewater treatment equipment according to claim 1, characterized in that, The top of the pressing plate (304) and the top of the column (205) are respectively provided with mounting holes (306) and threaded holes (307).

7. The pre-denitrification wastewater treatment equipment according to claim 6, characterized in that, Screws (308) are also movably installed in the mounting hole (306) and threaded hole (307).

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