Pretreatment equipment for ammonia-containing wastewater

Abstract

The utility model discloses pretreatment equipment for ammonia-containing wastewater, which relates to the field of wastewater pretreatment equipment and comprises a pretreatment tank and a water inlet pipe mounted at the top end of the pretreatment tank, a precipitation pipe is detachably fixed at the bottom end of the pretreatment tank, and a partition plate is mounted at the top end of the inner wall of the pretreatment tank. A buffer plate is fixed to the top end of the inner wall of the pretreatment tank, a plurality of water outlet holes are formed in the center of a partition plate, a flow guide plate of an annular structure is obliquely fixed to the partition plate, a filter screen is fixedly embedded in the outer side of the partition plate, and a water outlet pipe located above the buffer plate is fixed to the bottom end of the side wall of the pretreatment tank. An electromagnetic valve is installed on the water outlet pipe, a plurality of supporting legs are installed on the outer wall of the pretreatment tank in an annular array mode, and a connecting part is fixed to the bottom end of the pretreatment tank. According to the sewage treatment device, light impurities in sewage can be conveniently separated and filtered, and the treatment effect of light substances in the sewage is improved.

Description

Technical Field

[0001] The utility model relates to the field of wastewater pretreatment equipment, in particular to pretreatment equipment for ammonia-containing wastewater. Background Art

[0002] Wastewater generated by various activities, such as mineral mining, sand and gravel aggregate processing, stone processing, concentrating and washing, ceramic production, and power plant desulfurization, often contains suspended solids concentrations reaching thousands or even hundreds of thousands of milligrams per liter. Purifying this high-concentration suspended solids wastewater to meet discharge standards is crucial to protecting the aquatic ecosystem. However, due to the inherent characteristics of high-suspended solids wastewater (e.g., high suspended solids content, a wide range of concentrations (10-150 g / L), and varying suspended solids particle sizes, with fine particles being more difficult to treat than coarse particles), existing conventional treatment methods for high-suspended solids wastewater remain unsatisfactory and present various challenges. For example, using pre-sedimentation tanks and sedimentation tanks can lead to system clogging, compacted sedimentation in radial flow tanks, difficulty in cleaning, severe equipment wear, and short-term siltation, ultimately leading to abandonment and poor operation. Using dams or ponds for natural sedimentation presents significant safety risks, difficult site selection, limited land resources, and limited widespread applicability.

[0003] Patent announcement number CN208511959U discloses a sludge discharge device for a sewage treatment tank, including a sewage treatment tank, a sedimentation tank is provided at the lower side of the sewage treatment tank, the sewage treatment tank and the sedimentation tank are fixedly connected by screws, a scraper motor is provided at the upper side of the sewage treatment tank, the scraper motor and the sewage treatment tank are fixedly connected by screws, a rotating rod is provided inside the sewage treatment tank, one end of the rotating rod is connected to the scraper motor, the other end of the rotating rod is provided with a rotating disk, the rotating disk and the rotating rod are fixedly connected by screws, the rotating disk is installed on the outlet of the sedimentation tank, and the rotating disk and the sedimentation tank are fixedly connected by screws. The device is connected to the sedimentation tank through a chute, and a mud discharge pipe is provided at the lower end of the sedimentation tank. The mud discharge pipe is connected to the sedimentation tank through a flange. A screw is provided inside the mud discharge pipe. The screw and the mud discharge pipe are connected through a bearing. One end of the screw is fixedly connected to a screw motor. A mud discharge ring is provided on one side of the screw. A screw nut is provided on the inside of the mud discharge ring. A mud discharge spiral is provided between the mud discharge ring and the screw nut. The screw nut and the mud discharge ring are connected through the mud discharge spiral. A mud outlet is provided on one side of the screw, and a mud discharge pump is provided on one side of the mud outlet. Although this device can facilitate sludge discharge, it is not suitable for water treatment containing high concentrations of suspended solids, which results in the sewage still containing a large amount of suspended solids after sedimentation treatment. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a pretreatment equipment for ammonia-containing wastewater to solve the technical problem that general sewage pretreatment equipment is not suitable for treating water containing high concentrations of suspended matter, resulting in sewage still containing a large amount of suspended impurities after sedimentation treatment.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: pretreatment equipment for ammonia-containing wastewater, including a pretreatment tank and a water inlet pipe installed on the top of the pretreatment tank, a sedimentation pipe is detachably fixed to the bottom of the pretreatment tank, and a partition is installed at the top of the inner wall of the pretreatment tank, wherein a buffer plate is fixed to the top of the inner wall of the pretreatment tank, a plurality of water outlet holes are opened at the center position of the partition, and a guide plate with an annular structure is fixed on the partition at an angle, wherein a filter screen is embedded and fixed on the outer side of the partition.

[0006] The present invention is further configured such that a water outlet pipe located above the buffer plate is fixed to the bottom end of the side wall of the pretreatment tank, and a solenoid valve is installed on the water outlet pipe.

[0007] The present invention is further configured such that a plurality of legs are installed on the outer wall of the pretreatment tank in a circular array, and a connecting portion is fixed to the bottom end of the pretreatment tank.

[0008] The utility model is further configured such that the top end of the sedimentation tube is threadedly inserted into the connecting portion, and a mounting ring is fixed to the outer wall of the sedimentation tube, and a plurality of rotating rods are fixed to the outer wall of the mounting ring in a circular array.

[0009] The present invention is further configured such that a top cover fixedly connected to the water inlet pipe is provided on the top of the pretreatment tank, and a support ring is fixed on the inner wall of the pretreatment tank.

[0010] The present invention is further configured such that the bottom end of the partition is in contact with the support ring, and handles are fixed on both sides of the top end surface of the partition.

[0011] The utility model is further configured such that a buffer bag corresponding to the water outlet is embedded and fixed at the center of the buffer plate, and a plurality of water outlet grooves are provided at the top of the buffer plate in a circular array.

[0012] In summary, the present invention mainly has the following beneficial effects: the present invention embeds a partition in the pretreatment tank, and opens a water outlet hole at the center of the partition. Sewage impacts the top of the partition from the water inlet pipe. Since the sewage cannot be discharged instantly from multiple water outlet holes, the impact force generated by the water flow drives the light impurities to be transported along the guide plate to the top of the filter screen. Since the heavy impurities are difficult to pass through the guide plate and be discharged from the water outlet hole due to the high sealing, the sewage drips down along the filter screen, while the light impurities remain on the top of the filter screen, which facilitates the separation and filtration of light impurities in the sewage, thereby improving the treatment effect of light objects in the sewage.

[0013] By fixing a buffer plate on the inner wall of the pretreatment tank, the water discharged from the water outlet hits the top of the buffer bag and is discharged along the water outlet trough. The buffer bag reduces the impact of the impact of the water flow on the impurities deposited in the sedimentation pipe. After the impurities are settled, the sewage is discharged from the drain pipe, and the settled impurities are cleaned by unscrewing the sedimentation pipe through a rotating rod, which improves the convenience of cleaning the impurities after settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the pretreatment tank of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the pretreatment tank of the present invention;

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at center A;

[0017] Figure 4 For this utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0018] In the figure: 1. Pretreatment tank; 2. Water outlet pipe; 3. Mounting ring; 4. Support leg; 5. Water inlet pipe; 6. Sedimentation pipe; 7. Support ring; 8. Handle; 9. Filter screen; 10. Guide plate; 11. Water outlet hole; 12. Partition; 13. Buffer plate; 14. Rotating rod; 15. Connecting part; 16. Buffer bag; 17. Water outlet trough. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] Pretreatment equipment for ammonia-containing wastewater, such as Figure 1-4 As shown, it includes a pretreatment tank 1 and a water inlet pipe 5 installed on the top of the pretreatment tank 1, a sedimentation pipe 6 is detachably fixed to the bottom end of the pretreatment tank 1, and a partition 12 is installed on the top of the inner wall of the pretreatment tank 1, wherein a buffer plate 13 is fixed to the top of the inner wall of the pretreatment tank 1, a plurality of water outlet holes 11 are opened at the center position of the partition 12, and a guide plate 10 with a ring structure is fixed on the partition 12 at an angle, wherein a filter screen 9 is embedded and fixed on the outer side of the partition 12.

[0021] A water outlet pipe 2 located above the buffer plate 13 is fixed to the bottom end of the side wall of the pretreatment tank 1, and a solenoid valve is installed on the water outlet pipe 2. The outer wall of the pretreatment tank 1 is installed with multiple legs 4 in a circular array, and a connecting part 15 is fixed to the bottom end of the pretreatment tank 1. The sewage impacts the top of the partition 12 from the water inlet pipe 5. Since the sewage cannot be discharged instantly from the multiple water outlet holes 11, the impact force generated by the water flow drives the light impurities along the guide plate 10 to the top of the filter screen 9. Since the heavy impurities are sealed high and difficult to pass through the guide plate 10 and be discharged from the water outlet hole 11, the sewage drips down along the filter screen 9, while the light impurities remain on the top of the filter screen 9.

[0022] Furthermore, the top of the sedimentation tube 6 is threadedly inserted into the connecting portion 15, and a mounting ring 3 is fixed to the outer wall of the sedimentation tube 6. A plurality of rotating rods 14 are fixed to the outer wall of the mounting ring 3 in a circular array. The top of the pretreatment tank 1 is provided with a top cover fixedly connected to the water inlet pipe 5, and a support ring 7 is fixed to the inner wall of the pretreatment tank 1. The bottom end of the partition 12 abuts against the support ring 7, and handles 8 are fixed on both sides of the top surface of the partition 12. After opening the top cover, the partition 12 is disassembled through the handle 8, and the filter screen 9 is cleaned after disassembly. For light impurities on the top, a buffer bag 16 corresponding to the water outlet 11 is embedded and fixed at the center of the buffer plate 13, and a plurality of water outlet grooves 17 are provided on the top of the buffer plate 13 in a circular array. The water discharged from the water outlet 11 hits the top of the buffer bag 16 and is discharged along the water outlet groove 17. The buffer bag 16 reduces the impact of the impact of the water flow on the impurities deposited in the sedimentation pipe 6. After the impurities are settled, the sewage is discharged from the drain pipe, and the settled impurities are cleaned by unscrewing the sedimentation pipe 6 through the rotating rod 14.

[0023] The working principle of the present invention is as follows: when in use, sewage impacts the top of the partition 12 from the water inlet pipe 5. Since the sewage cannot be discharged instantly from the multiple water outlet holes 11, the impact force generated by the contact between the water flow and the center position of the partition 12 drives the light impurities to be transported along the guide plate 10 to the top of the filter screen 9. Since the heavy impurities are sealed high and difficult to pass through the guide plate 10 and be discharged from the water outlet hole 11, the sewage drips downward along the filter screen 9, while the light impurities remain on the top of the filter screen 9. After the water discharged from the water outlet hole 11 impacts the top of the buffer bag 16, it is discharged along the water outlet trough 17. The buffer bag 16 reduces the impact of the water flow on the impurities deposited in the sedimentation pipe 6. After the impurities are settled, the sewage is discharged from the drain pipe. The rotating rod 14 is held by hand to unscrew the sedimentation pipe 6 to clean the settled impurities, which improves the convenience of cleaning after the impurities are settled.

[0024] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A pretreatment device for ammonia-containing wastewater, comprising a pretreatment tank (1) and a water inlet pipe (5) installed at the top of the pretreatment tank (1), characterized in that: A sedimentation pipe (6) is detachably fixed to the bottom end of the pretreatment tank (1), and a partition (12) is installed on the top end of the inner wall of the pretreatment tank (1), wherein a buffer plate (13) is fixed to the top end of the inner wall of the pretreatment tank (1), a plurality of water outlet holes (11) are opened at the center position of the partition (12), and a guide plate (10) with an annular structure is fixed on the partition (12) at an angle, wherein a filter screen (9) is embedded and fixed on the outer side of the partition (12).

2. The pretreatment equipment for ammonia-containing wastewater according to claim 1, characterized in that: A water outlet pipe (2) located above the buffer plate (13) is fixed to the bottom end of the side wall of the pretreatment tank (1), and a solenoid valve is installed on the water outlet pipe (2).

3. The pretreatment equipment for ammonia-containing wastewater according to claim 1, characterized in that: The outer wall of the pretreatment tank (1) is provided with a plurality of supporting legs (4) in a circular array, and a connecting portion (15) is fixed to the bottom end of the pretreatment tank (1).

4. The pretreatment equipment for ammonia-containing wastewater according to claim 3, characterized in that: The top end of the sedimentation tube (6) is threadedly inserted into the connection portion (15), and a mounting ring (3) is fixed to the outer wall of the sedimentation tube (6), and a plurality of rotating rods (14) are fixed to the outer wall of the mounting ring (3) in a circular array.

5. The pretreatment equipment for ammonia-containing wastewater according to claim 1, characterized in that: The top of the pretreatment tank (1) is provided with a top cover fixedly connected to the water inlet pipe (5), and a support ring (7) is fixed to the inner wall of the pretreatment tank (1).

6. The pretreatment equipment for ammonia-containing wastewater according to claim 5, characterized in that: The bottom end of the partition (12) is in contact with the support ring (7), and handles (8) are fixed on both sides of the top end surface of the partition (12).

7. The pretreatment equipment for ammonia-containing wastewater according to claim 1, characterized in that: A buffer bag (16) corresponding to the water outlet hole (11) is embedded and fixed at the center of the buffer plate (13), and a plurality of water outlet grooves (17) are provided in a circular array at the top of the buffer plate (13).

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