Denitrification nitrogen removal sewage treatment equipment

Abstract

The invention discloses denitrification nitrogen removal sewage treatment equipment which comprises a base and a top seat, a treatment box is connected between the base and the top seat, a drainage pipe penetrates through the base, the center of the top seat is communicated with a water inlet pipe, and an infusion pump is mounted in the water inlet pipe; the treatment box is formed by combining an impurity removal chamber, a flocculation chamber and a denitrification chamber which are sequentially arranged from top to bottom, a first partition plate is mounted between the impurity removal chamber and the flocculation chamber, a second partition plate is mounted between the flocculation chamber and the denitrification chamber, a flow guide pipe is mounted in the middle of the first partition plate, a plurality of drainage pipes are communicated between the flocculation chamber and the denitrification chamber, and the flow guide pipes are communicated with the first partition plate. The top of the second partition plate is communicated with an exhaust pipe, and the end part of the exhaust pipe extends out of the flocculation chamber; the device is reasonable in structural design, realizes efficient, stable, energy-saving and automatic operation of the sewage treatment process, and is particularly suitable for sewage treatment scenes with requirements on denitrification.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a denitrification wastewater treatment equipment. Background Technology

[0002] Efficient and stable denitrification wastewater treatment technology has become an urgent need in the field of environmental protection.

[0003] Currently, nitrogen removal in wastewater treatment typically relies on biological denitrification, where denitrifying bacteria, in an anaerobic environment, use organic carbon sources as electron donors to reduce nitrates and nitrites in wastewater into nitrogen gas, which is then released into the atmosphere. Existing denitrification systems mostly employ multi-stage series structures, such as physical pretreatment via screens and grit chambers, followed by nitrification and denitrification in a biological treatment tank, and finally, sludge-water separation via a secondary sedimentation tank. While this traditional process is effective, it suffers from several technical drawbacks:

[0004] 1. Low level of integration, dispersed processing flow, large footprint, numerous structures, long process flow, high energy consumption, and complex management;

[0005] 2. Insufficient anti-clogging performance and high maintenance frequency, especially in the pretreatment stage, where suspended solids and impurities easily clog the filter device, affecting the hydraulic flow and treatment effect of subsequent treatment units;

[0006] 3. The nitrogen removal efficiency is unstable, the reactant addition effect is poor, and it is difficult to ensure the anaerobic environment and carbon source supply required for the denitrification nitrogen removal process, resulting in poor nitrogen removal effect;

[0007] 4. Low level of automation and high degree of manual intervention. For example, manual judgment of filter plate blockage is often delayed, causing the equipment to run in an inefficient state for a period of time before cleaning, which reduces the overall processing capacity.

[0008] To address the problems of the existing technologies, we need to propose a highly integrated and high-performance denitrification wastewater treatment equipment to achieve efficient wastewater treatment, reduce operation and maintenance costs, and meet the current environmental protection requirements for denitrification treatment. Summary of the Invention

[0009] The purpose of this invention is to provide a denitrification wastewater treatment device to overcome the technical problems existing in the prior art.

[0010] To achieve the above-mentioned technical objectives and effects, the present invention provides the following technical solution:

[0011] A denitrification wastewater treatment device includes a base and a top base, with a treatment tank connected between the base and the top base. A drain pipe runs through the base, and an inlet pipe is connected to the center of the top base. A liquid pump is installed in the inlet pipe. The treatment tank is composed of a purification chamber, a flocculation chamber, and a denitrification chamber arranged sequentially from top to bottom. A first partition is installed between the purification chamber and the flocculation chamber, and a second partition is installed between the flocculation chamber and the denitrification chamber. A guide pipe is installed in the middle of the first partition, and multiple drainage pipes connect the flocculation chamber and the denitrification chamber. An exhaust pipe is connected to the top of the second partition, and the end of the exhaust pipe extends out of the flocculation chamber.

[0012] The impurity removal chamber is used to filter and remove impurities from the water. The impurity removal chamber is equipped with a feed hopper, filter plate and anti-clogging components.

[0013] The flocculation chamber is used to flocculate suspended particles in the water. The flocculation chamber is equipped with a support frame, a conical cylinder and a water wheel assembly.

[0014] The denitrification chamber is used to treat nitrogen ions in the water. The denitrification chamber is equipped with a packing frame, a positioning frame and a feeding assembly.

[0015] Preferably, in a denitrification wastewater treatment device, the feed hopper is fixedly connected to the top of the impurity removal chamber, the filter plate is located below the opening of the feed hopper, the front and rear ends of the filter plate are fixed to the inner wall of the impurity removal chamber, the left and right ends of the filter plate are connected to the inner wall of the impurity removal chamber, the filter plate has multiple filter holes, a transverse sliding rod is provided on the rear side of the opening of the feed hopper, a sliding sleeve is movably sleeved on the outside of the transverse sliding rod, a side bracket is connected between the end of the transverse sliding rod and the outer wall of the feed hopper, the front parts of the two side brackets are rotatably connected to a reciprocating screw, a nut seat is screwed to the outer wall of the reciprocating screw, the lower end of the sliding sleeve and the nut seat are connected to a translation seat, the lower end of the translation seat is connected to a scraper, and the scraper abuts against the upper surface of the filter plate.

[0016] Preferably, in a denitrification wastewater treatment device, the anti-clogging component includes a lifting seat, a plurality of pins connected to the top of the lifting seat, the upper ends of the pins extending into the filter holes, diagonal braces connected to the left and right sides of the outer wall of the lifting seat, collars connected to the ends of the diagonal braces, a stroke rod inserted into the collar, the end of the stroke rod fixed to the inner wall of the impurity removal chamber, and a return spring sleeved on the upper part of the stroke rod.

[0017] Preferably, in a denitrification wastewater treatment device, the right end of the reciprocating screw is connected to a driven shaft, the lower part of the impurity removal chamber is rotatably connected to a drive shaft, the outer wall of the drive shaft is connected to a cam, the upper end of the cam abuts against the bottom wall of the lifting seat, the driven shaft and the drive shaft are both rotatably connected to the right side wall of the impurity removal chamber through bearings, the right ends of the driven shaft and the drive shaft are both connected to sprockets, a transmission chain is sleeved between the outer walls of the two sprockets, the left side wall of the impurity removal chamber is connected to a drive motor, and the output shaft of the drive motor is fixedly connected to the left end of the drive shaft.

[0018] Preferably, in a denitrification wastewater treatment device, the support frame is composed of an outer rectangular frame, an inner annular frame, and support strips. The outer wall of the outer rectangular frame is fixed to the inner wall of the flocculation chamber, and the upper end of the inner annular frame is fixed to the bottom opening of the conical cylinder. The inner wall of the support frame is connected to a permeable cloth, and the permeable cloth is filled with a gravel layer. The upper opening of the drainage pipe is located above the gravel layer. The water wheel assembly includes a cylindrical shell, and a steering shaft is rotatably connected to the center of the cylindrical shell. A bevel gear is connected to the right end of the steering shaft, and a water wheel is connected to the left end of the steering shaft. The upper part of the cylindrical shell is connected to the guide pipe, and the lower end of the cylindrical shell is connected to the top opening of the conical cylinder.

[0019] Preferably, in a denitrification wastewater treatment device, a storage tank is connected to the right side wall of the flocculation chamber, and an L-shaped pipe is connected to the bottom of the front end of the storage tank. A sealed bearing is installed at the vertical end of the L-shaped pipe, and a vertical shaft is rotatably connected inside the sealed bearing. A second bevel gear is connected to the upper end of the vertical shaft, and the second bevel gear meshes with a first bevel gear. A spiral auger is connected to the lower end of the vertical shaft. An inclined branch pipe is connected between the upper end of the vertical part of the L-shaped pipe and the wall of the conical cylinder. A sewage discharge pipe is connected to the bottom of the rear side wall of the flocculation chamber.

[0020] Preferably, in a denitrification wastewater treatment device, the feeding assembly includes a feed pipe, a connecting pipe is movably inserted into the lower end of the feed pipe, a float is connected to the outer wall of the connecting pipe, a top material rack is connected to the top of the inner cavity of the connecting pipe, a blocking ball is connected to the upper end of the top material rack, and a matching cover is connected to the lower part of the inner wall of the feed pipe, with the blocking ball abutting against the inner wall of the matching cover.

[0021] Preferably, in a denitrification wastewater treatment device, the positioning frame has multiple guide holes, the connecting pipe passes through the guide holes, the outer wall of the denitrification chamber is connected to a bacterial box, the bottom wall of the bacterial box is connected to the upper end of the feed pipe, the bacterial box has a carrier support inside, the carrier support is installed with denitrifying bacteria carrier and particulate carbon source, the packing frame is located below the diversion pipe, the packing frame is filled with a pebble layer, a lightweight ceramsite layer and a fine gravel layer from top to bottom, the top of the packing frame is connected to multiple conical heads, and the outer wall of the conical heads abuts against the lower end of the connecting pipe.

[0022] Preferably, in a denitrification wastewater treatment device, a backwash pipe is installed in the base, and filter screens are installed at the upper ends of the backwash pipe and the drain pipe. Solenoid valves are installed in the backwash pipe, the drain pipe, and the sewage discharge pipe. An inspection ladder is connected to the outer wall of the treatment tank. Inspection doors are installed at the front ends of the impurity removal chamber, the flocculation chamber, and the denitrification chamber. A sludge collection pipe is provided at the rear of the treatment tank. A Y-shaped conduit connects the lower end of the unloading trough plate to the sludge collection pipe. The lower end of the sewage discharge pipe is connected to the sludge collection pipe.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention features a rational structural design, high integration and automation, and significantly improved treatment efficiency. It integrates physical filtration, chemical flocculation, and biological denitrification into one unit, achieving effective wastewater treatment. Compared to traditional decentralized treatment systems that require multiple independent structures, it greatly saves floor space, reduces manual intervention and energy consumption, and significantly improves overall treatment efficiency and stability.

[0025] 2. This invention reduces maintenance frequency and downtime risk, ensuring stable system operation. The anti-clogging components and scraper structure work together to clean the filter residue regularly while ensuring the unobstructed filtration channel. The design of the conical cylinder, permeable cloth and gravel layer intercepts flocculents while allowing the supernatant to pass through, preventing flocculents from entering subsequent units and causing blockage.

[0026] 3. This invention has excellent denitrification effect and stable and controllable operation. After the water level rises, the dosing channel is opened to release denitrifying bacteria and carbon source, ensuring that the bacterial agent is added only after the anaerobic environment is formed and acts directly on the water body, which improves the utilization rate of bacterial strains and denitrification efficiency. The graded packing in the denitrification chamber provides a good biological reaction environment for denitrifying bacteria, and the backwashing pipeline is set to regularly backwash the biological packing layer, which is conducive to restoring the permeability and biological activity of the packing.

[0027] In summary, this invention achieves efficient, stable, energy-saving, and automated operation of the wastewater treatment process through highly integrated design, active anti-clogging mechanism, and intelligent reactant dosing method, making it particularly suitable for wastewater treatment scenarios requiring nitrogen removal. Attached Figure Description

[0028] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1;

[0030] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the internal structure of the impurity removal chamber in this invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the flocculation chamber in this invention;

[0033] Figure 5 This is a schematic diagram of the internal structure of the denitrification chamber in this invention;

[0034] Figure 6 This is a schematic diagram of the filter plate structure in this invention;

[0035] Figure 7 This is a schematic diagram of the side support structure in this invention;

[0036] Figure 8 This is a schematic diagram of the anti-clogging component in the present invention;

[0037] Figure 9 This is a schematic diagram of the drive shaft in this invention;

[0038] Figure 10 This is a schematic diagram of the conical cylinder in this invention;

[0039] Figure 11 This is a schematic diagram of the support frame in this invention;

[0040] Figure 12 This is a schematic diagram of the L-shaped tube in this invention;

[0041] Figure 13 This is a schematic diagram of the water turbine assembly in this invention;

[0042] Figure 14 This is a schematic diagram of the packing frame structure in this invention;

[0043] Figure 15 This is a schematic diagram of the positioning frame in this invention;

[0044] Figure 16 This is a schematic diagram of the feeding assembly in this invention;

[0045] Figure 17 This is a schematic diagram of the carrier support structure in this invention.

[0046] In the diagram: 1. Base; 2. Top; 3. Drain pipe; 4. Inlet pipe; 5. Liquid pump; 6. Impurity removal chamber; 7. Flocculation chamber; 8. Denitrification chamber; 9. First partition; 10. Second partition; 11. Guide pipe; 12. Drainage pipe; 13. Exhaust pipe; 14. Maintenance ladder; 15. Maintenance door; 16. Sludge collection pipe; 17. Y-shaped guide pipe; 101. Backwash pipe;

[0047] 601. Feed hopper; 602. Filter plate; 603. Anti-clogging component; 604. Discharge chute plate; 605. Filter holes; 606. Transverse slide bar; 607. Sliding sleeve; 608. Side support; 609. Reciprocating lead screw; 610. Nut seat; 611. Translation seat; 612. Scraper; 613. Driven shaft; 614. Drive shaft; 615. Cam; 616. Sprocket; 617. Transmission chain; 618. Drive motor;

[0048] 631. Lifting seat; 632. Ejector pin; 633. Diagonal brace; 634. Collar; 635. Travel rod; 636. Return spring;

[0049] 701. Support frame; 702. Conical cylinder; 703. Water turbine assembly; 704. Permeable cloth; 705. Gravel layer; 706. Storage bin; 707. Sewage pipe;

[0050] 711. Outer rectangular frame; 712. Inner circular frame; 713. Support strip;

[0051] 731. Cylindrical shell; 732. Steering shaft; 733. Bevel gear one; 734. Water turbine;

[0052] 761. L-shaped pipe; 762. Sealed bearing; 763. Vertical shaft; 764. Bevel gear II; 765. Spiral auger; 766. Inclined branch pipe;

[0053] 801. Packing frame; 802. Positioning frame; 803. Feeding assembly; 804. Inoculum box; 805. Carrier support; 851. Denitrifying bacteria carrier; 852. Particulate carbon source

[0054] 811. Pebble layer; 812. Lightweight ceramsite layer; 813. Fine gravel layer; 814. Conical head; 821. Guide hole;

[0055] 831. Feed pipe; 832. Connecting pipe; 833. Float; 834. Top material rack; 835. Blocking ball; 836. Matching cover. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Example 1

[0058] Please see Figure 1-17 As shown, this embodiment is a denitrification wastewater treatment device, including a base 1 and a top base 2. A treatment box is connected between the base 1 and the top base 2. A drain pipe 3 runs through the base 1. An inlet pipe 4 is connected to the center of the top base 2. A liquid pump 5 is installed in the inlet pipe 4. The treatment box is composed of a dirt removal chamber 6, a flocculation chamber 7 and a denitrification chamber 8 arranged sequentially from top to bottom. A first partition 9 is installed between the dirt removal chamber 6 and the flocculation chamber 7. A second partition 10 is installed between the flocculation chamber 7 and the denitrification chamber 8. A guide pipe 11 is installed in the middle of the first partition 9. Multiple drainage pipes 12 are connected between the flocculation chamber 7 and the denitrification chamber 8. An exhaust pipe 13 is connected to the top of the second partition 10. The end of the exhaust pipe 13 extends out of the flocculation chamber 7.

[0059] The impurity removal chamber 6 is used for filtering and removing impurities from the water. Inside the impurity removal chamber 6 are installed a guide hopper 601, a filter plate 602, and an anti-clogging component 603. The guide hopper 601 guides the water supplied by the inlet pipe 4, the filter plate 602 filters the water supplied from the opening of the guide hopper 601, and the anti-clogging component 603 unblocks the filter plate 602. The flocculation chamber 7 is used for flocculating suspended particles in the water. Inside the flocculation chamber 7 are installed a support frame 701, a conical cylinder 702, and a water wheel assembly 703. The support frame 701 is used for... The conical cylinder 702 is used to connect the support frame 701 and the water turbine assembly 703 to block flocculated particles and to create a height difference. The water turbine assembly 703 is used to receive the impact of water flow and generate rotation. The denitrification chamber 8 is used to treat nitrogen ions in the water. The denitrification chamber 8 is equipped with a packing frame 801, a positioning frame 802 and a feeding assembly 803. The packing frame 801 is used to filter the water in the denitrification chamber 8. The positioning frame 802 is used to limit and guide the feeding assembly 803. The feeding assembly 803 is used to provide the denitrifying bacteria required for denitrification.

[0060] The feed hopper 601 is fixedly connected to the top of the inner cavity of the impurity removal chamber 6. The filter plate 602 is located below the opening of the feed hopper 601. The front and rear ends of the filter plate 602 are fixed to the inner wall of the impurity removal chamber 6. The left and right ends of the filter plate 602 are connected to the inner wall of the impurity removal chamber 6 by a discharge chute plate 604. The filter plate 602 has multiple filter holes 605. A transverse slide rod 606 is provided on the rear side of the opening of the feed hopper 601. A sliding sleeve 607 is movably sleeved on the outside of the transverse slide rod 606. A side bracket 608 is connected between the end of the transverse slide rod 606 and the outer wall of the feed hopper 601. The front parts of the two side brackets 608 are rotatably connected to a reciprocating screw 609. A nut seat 610 is screwed onto the outer wall of the reciprocating screw 609. The lower ends of the sliding sleeve 607 and the nut seat 610 are connected to a translation seat 611. A scraper 612 is connected to the lower end of the translation seat 611. The scraper 612 abuts against the upper surface of the filter plate 602.

[0061] The specific implementation method of this embodiment is as follows:

[0062] When in use, this device is powered by an external power source. Wastewater is pumped into the inlet pipe 4 by the pump 5 and first enters the guide hopper 601 of the impurity removal chamber 6. The guide hopper 601 guides the water flow, causing the wastewater to fall onto the filter plate 602 below the opening. The wastewater is physically filtered through multiple filter holes 605 on the filter plate 602, which can intercept large particulate impurities in the water. The filtered water passes through the filter holes 605 and enters the lower part of the impurity removal chamber 6, where impurities are trapped on the surface of the filter plate 605.

[0063] The transverse slide bar 606 guides the slide sleeve 607. After the reciprocating screw 609 rotates, the nut seat 610 drives the translation seat 611 to move back and forth. The scraper 612 can push the impurities on the surface of the filter plate 602 to the unloading trough plates 604 on both sides, which can realize automatic slag removal and avoid clogging the filter holes 605.

[0064] Example 2

[0065] Based on Embodiment 1, the anti-clogging component 603 includes a lifting seat 631. A plurality of pins 632 are connected to the top of the lifting seat 631. The upper ends of the pins 632 extend into the filter holes 605. The outer walls of the lifting seat 631 are connected to diagonal braces 633 on the left and right. The ends of the diagonal braces 633 are connected to collars 634. A stroke rod 635 is inserted into the collar 634. The end of the stroke rod 635 is fixed to the inner wall of the impurity removal chamber 6. A return spring 636 is sleeved on the upper part of the stroke rod 635.

[0066] The right end of the reciprocating screw 609 is connected to the driven shaft 613. The lower part of the inner cavity of the impurity removal chamber 6 is rotatably connected to the drive shaft 614. The outer wall of the drive shaft 614 is connected to the cam 615. The upper end of the cam 615 abuts against the bottom wall of the lifting seat 631. The driven shaft 613 and the drive shaft 614 are rotatably connected to the right side wall of the impurity removal chamber 6 through bearings. The right ends of the driven shaft 613 and the drive shaft 614 are connected to the sprockets 616. A transmission chain 617 is sleeved between the outer walls of the two sprockets 616. The left side wall of the impurity removal chamber 6 is connected to the drive motor 618. The output shaft of the drive motor 618 is fixed to the left end of the drive shaft 614.

[0067] The support frame 701 is composed of an outer rectangular frame 711, an inner annular frame 712 and a support bar 713. The outer wall of the outer rectangular frame 711 is fixed to the inner wall of the flocculation chamber 7. The upper end of the inner annular frame 712 is fixed to the bottom opening of the conical cylinder 702. The inner wall of the support frame 701 is connected to a permeable cloth 704. The permeable cloth 704 is filled with a gravel layer 705. The upper opening of the drainage pipe 12 is located above the gravel layer 705. The water turbine assembly 703 includes a cylindrical shell 731. The center of the cylindrical shell 731 is rotatably connected to a steering shaft 732. The right end of the steering shaft 732 is connected to a bevel gear 733. The left side of the steering shaft 732 is connected to a water turbine 734. The upper part of the cylindrical shell 731 is connected to the guide pipe 11. The lower end of the cylindrical shell 731 is connected to the top opening of the conical cylinder 702.

[0068] A storage box 706 is connected to the right side wall of the flocculation chamber 7. An L-shaped pipe 761 is connected to the bottom of the front end of the storage box 706. A sealed bearing 762 is installed at the vertical end of the L-shaped pipe 761. A vertical shaft 763 is rotatably connected inside the sealed bearing 762. A bevel gear 764 is connected to the upper end of the vertical shaft 763. The bevel gear 764 meshes with a bevel gear 733. A spiral auger 765 is connected to the lower end of the vertical shaft 763. An inclined branch pipe 766 is connected between the upper vertical part of the L-shaped pipe 761 and the wall of the conical cylinder 702. A drain pipe 707 is connected to the bottom of the rear side wall of the flocculation chamber 7.

[0069] The specific implementation method of this embodiment is as follows:

[0070] In this embodiment, the drive motor 618 drives the drive shaft 614 to rotate. Through the transmission of the sprocket 616 and the transmission chain 617, the driven shaft 613 and the reciprocating screw 609 rotate synchronously. After the cam 615 rotates with the drive shaft 614, it periodically pushes the lifting seat 631. The lifting seat 631 is connected to the collar 634 through the diagonal support rod 633. The collar 634 can move up and down stably along the stroke rod 635. The return spring 636 is used for assisted reset. The ejector pin 632 moves with the lifting seat 631 and inserts into the filter hole 605, which can push out the particles stuck in the filter hole 605, effectively solving the problem of filter hole 605 blockage and ensuring continuous high filtration efficiency.

[0071] The filtered water enters the cylindrical shell 731 of the water impeller assembly 703 through the guide pipe 11. The water impacts the water impeller 734, causing it to rotate. The water then enters the bottom of the flocculation chamber 7 through the conical cylinder 702. The steering shaft 732 rotates synchronously with the water impeller 734, causing bevel gear 1 733 to mesh with bevel gear 2 764, which in turn drives the vertical shaft 763 and the auger 765 to rotate. The storage tank 706 stores flocculant powder and is connected to the horizontal end of the L-shaped pipe 761. The rotating auger 765 can lift the flocculant upwards. The flocculant is then transported to the conical cylinder 702 via the inclined branch pipe 766. The flocculant falls and mixes and reacts fully with the sewage, enabling the colloids and unstable fine suspended matter in the water to form larger flocs under the action of the flocculant. As the water level inside the flocculation chamber 7 rises and submerges the support frame 701, the flocculants are filtered and isolated by the permeable cloth 704 and the gravel layer 705 on it. The supernatant enters the denitrification chamber 8 below through multiple drainage pipes 12. The flocculants settle to the bottom of the flocculation chamber 7 under the action of gravity and are periodically discharged through the sewage pipe 707.

[0072] Example 3

[0073] Based on Embodiment 2, the feeding assembly 803 includes a feed pipe 831, a connecting pipe 832 is movably inserted into the lower end of the feed pipe 831, a float 833 is connected to the outer wall of the connecting pipe 832, a top material rack 834 is connected to the top of the inner cavity of the connecting pipe 832, a blocking ball 835 is connected to the upper end of the top material rack 834, and a mating cover 836 is connected to the lower part of the inner wall of the feed pipe 831, with the blocking ball 835 abutting against the inner wall of the mating cover 836.

[0074] The positioning frame 802 has multiple guide holes 821, and the connecting pipe 832 passes through the guide holes 821. The outer wall of the denitrification chamber 8 is connected to the bacteria box 804. The bottom wall of the bacteria box 804 is connected to the upper end of the feed pipe 831. The bacteria box 804 has a carrier support 805 inside. The carrier support 805 is equipped with denitrifying bacteria carrier 851 and particulate carbon source 852. The packing frame 801 is located below the drainage pipe 12. The packing frame 801 is filled with a pebble layer 811, a light ceramsite layer 812 and a fine gravel layer 813 from top to bottom. The top of the packing frame 801 is connected to multiple conical heads 814. The outer wall of the conical head 814 abuts against the lower end of the connecting pipe 832.

[0075] A backwash pipe 101 is installed in the base 1. Filter screens are installed at the upper ends of the backwash pipe 101 and the drain pipe 3 to prevent sand and gravel from overflowing. Solenoid valves are installed in the backwash pipe 101, the drain pipe 3, and the sewage pipe 707 to facilitate the control of water flow. A maintenance ladder 14 is connected to the outer wall of the treatment tank. Maintenance doors 15 are installed at the front ends of the impurity removal chamber 6, the flocculation chamber 7, and the denitrification chamber 8 to facilitate the maintenance of the components. A sludge collection pipe 16 is provided at the rear of the treatment tank. A Y-shaped conduit 17 connects the lower end of the unloading trough plate 604 to the sludge collection pipe 16. The lower end of the sewage pipe 707 is connected to the sludge collection pipe 16 to facilitate the collection and discharge of impurities and residual sewage.

[0076] The specific implementation method of this embodiment is as follows:

[0077] In this embodiment, the supernatant flows into the denitrification chamber 8 and is then sprayed onto the packing frame 801. The pebble layer 811, the lightweight ceramsite layer 812, and the fine gravel layer 813 inside the packing frame 801 constitute a graded biological filter bed. The ceramsite and gravel provide a large attachment surface for denitrifying bacteria. As the water level inside the denitrification chamber 8 rises, the float 833 causes the connecting pipe 832 to rise under buoyancy, and the position of the upper end of the top material rack 834, the plug ball 835, rises. The plug ball 835 then detaches from the inner wall of the matching cover 836. At this time, the feed pipe 831 opens, and the carrier support 805 in the bacteria box 804 enters the denitrification chamber 8 under gravity along the path of feed pipe 831-connecting pipe 832. The denitrifying bacteria carrier 851 and the solid particulate carbon source 852 can contact the water in an anaerobic environment. The denitrifying bacteria on the denitrifying bacteria carrier 851 use nitrate NO3 in the water as a precipitator. - and nitrite NO2 - As an electron acceptor, it undergoes anaerobic respiration, reducing it to nitrogen N2, which is then sent out through the exhaust pipe 13. After the denitrification process is completed, the solenoid valve in the drain pipe 3 is opened, and the water level in the denitrification chamber 8 drops. The float 833 then drops accordingly, and the plug 835 re-engages with the mating cover 836 to seal the channel. The backwash pipe 101 can be opened periodically to backwash the packing layer with water to prevent blockage and maintain treatment efficiency.

[0078] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A denitrification wastewater treatment device, comprising a base (1) and a top base (2), wherein a treatment tank is connected between the base (1) and the top base (2), characterized in that: A drain pipe (3) runs through the base (1), and an inlet pipe (4) is connected to the center of the top seat (2). A liquid pump (5) is installed in the inlet pipe (4). The treatment box is composed of a purification chamber (6), a flocculation chamber (7), and a denitrification chamber (8) arranged sequentially from top to bottom. A first partition (9) is installed between the purification chamber (6) and the flocculation chamber (7). A second partition (10) is installed between the flocculation chamber (7) and the denitrification chamber (8). A guide pipe (11) is installed in the middle of the first partition (9). Multiple drainage pipes (12) are connected between the flocculation chamber (7) and the denitrification chamber (8). An exhaust pipe (13) is connected to the top of the second partition (10). The end of the exhaust pipe (13) extends out of the flocculation chamber (7). The impurity removal chamber (6) is used to filter and remove impurities from the water. The impurity removal chamber (6) is equipped with a feed hopper (601), a filter plate (602) and an anti-clogging component (603). The flocculation chamber (7) is used to flocculate suspended particles in the water. The flocculation chamber (7) is equipped with a support frame (701), a conical cylinder (702) and a water turbine assembly (703). The denitrification chamber (8) is used to treat nitrogen ions in the water. The denitrification chamber (8) is equipped with a packing frame (801), a positioning frame (802) and a feeding assembly (803).

2. The denitrification wastewater treatment equipment according to claim 1, characterized in that: The feed hopper (601) is fixedly connected to the top of the inner cavity of the impurity removal chamber (6). The filter plate (602) is located below the opening of the feed hopper (601). The front and rear ends of the filter plate (602) are fixed to the inner wall of the impurity removal chamber (6). The left and right ends of the filter plate (602) are connected to the inner wall of the impurity removal chamber (6) by a discharge chute plate (604). The filter plate (602) has multiple filter holes (605). A transverse slide rod (606) is provided on the rear side of the opening of the feed hopper (601). A sliding sleeve is movably fitted on the outside of the transverse slide rod (606). (607) A side bracket (608) is connected between the end of the transverse slide bar (606) and the outer wall of the guide hopper (601). The front parts of the two side brackets (608) are rotatably connected to a reciprocating screw (609). A nut seat (610) is screwed onto the outer wall of the reciprocating screw (609). The lower end of the slide sleeve (607) and the nut seat (610) are connected to a translation seat (611). The lower end of the translation seat (611) is connected to a scraper (612). The scraper (612) abuts against the upper surface of the filter plate (602).

3. The denitrification wastewater treatment equipment according to claim 2, characterized in that: The anti-clogging component (603) includes a lifting seat (631), the top of which is connected to a plurality of pins (632), the upper end of which extends into the filter hole (605), the outer wall of the lifting seat (631) is connected to the left and right sides of the left and right sides of the left and right sides of the outer wall of the lifting seat (631), the end of which is connected to a collar (634), a stroke rod (635) is inserted into the collar (634), the end of which is fixed to the inner wall of the impurity removal chamber (6), and a return spring (636) is sleeved on the upper part of the stroke rod (635).

4. The denitrification wastewater treatment equipment according to claim 2, characterized in that: The right end of the reciprocating screw (609) is connected to a driven shaft (613). The lower part of the inner cavity of the impurity removal chamber (6) is rotatably connected to a drive shaft (614). The outer wall of the drive shaft (614) is connected to a cam (615). The upper end of the cam (615) abuts against the bottom wall of the lifting seat (631). The driven shaft (613) and the drive shaft (614) are rotatably connected to the right side wall of the impurity removal chamber (6) through bearings. The right ends of the driven shaft (613) and the drive shaft (614) are connected to sprockets (616). A transmission chain (617) is sleeved between the outer walls of the two sprockets (616). The left side wall of the impurity removal chamber (6) is connected to a drive motor (618). The output shaft of the drive motor (618) is fixed to the left end of the drive shaft (614).

5. The denitrification wastewater treatment equipment according to claim 2, characterized in that: The support frame (701) is composed of an outer rectangular frame (711), an inner annular frame (712), and a support strip (713). The outer wall of the outer rectangular frame (711) is fixed to the inner wall of the flocculation chamber (7). The upper end of the inner annular frame (712) is fixed to the bottom opening of the conical cylinder (702). The inner wall of the support frame (701) is connected to a permeable cloth (704), which is filled with a gravel layer (705). The upper end of the drainage pipe (12) is open. Located above the gravel layer (705), the water turbine assembly (703) includes a cylindrical shell (731), a steering shaft (732) is rotatably connected to the center of the cylindrical shell (731), a bevel gear (733) is connected to the right end of the steering shaft (732), a water turbine (734) is connected to the left side of the steering shaft (732), a guide pipe (11) is connected to the upper part of the cylindrical shell (731), and the top opening of the conical cylinder (702) is connected to the lower end of the cylindrical shell (731).

6. The denitrification wastewater treatment equipment according to claim 5, characterized in that: The right side wall of the flocculation chamber (7) is connected to a storage box (706). The bottom of the front end of the storage box (706) is connected to an L-shaped pipe (761). A sealed bearing (762) is installed at the vertical end of the L-shaped pipe (761). A vertical shaft (763) is rotatably connected inside the sealed bearing (762). A bevel gear two (764) is connected to the upper end of the vertical shaft (763). The bevel gear two (764) meshes with bevel gear one (733). A spiral auger (765) is connected to the lower end of the vertical shaft (763). An inclined branch pipe (766) is connected between the upper vertical part of the L-shaped pipe (761) and the wall of the conical cylinder (702). A drain pipe (707) is connected to the bottom of the rear side wall of the flocculation chamber (7).

7. The denitrification wastewater treatment equipment according to claim 1, characterized in that: The feeding assembly (803) includes a feed pipe (831), a connecting pipe (832) is movably inserted into the lower end of the feed pipe (831), a float (833) is connected to the outer wall of the connecting pipe (832), a top material rack (834) is connected to the top of the inner cavity of the connecting pipe (832), a blocking ball (835) is connected to the upper end of the top material rack (834), and a mating cover (836) is connected to the lower part of the inner wall of the feed pipe (831), with the blocking ball (835) abutting against the inner wall of the mating cover (836).

8. The denitrification wastewater treatment equipment according to claim 7, characterized in that: The positioning frame (802) has multiple guide holes (821), the connecting pipe (832) passes through the guide holes (821), the outer wall of the denitrification chamber (8) is connected to the bacteria box (804), the bottom wall of the bacteria box (804) is connected to the upper end of the feed pipe (831), the bacteria box (804) has a carrier support (805) inside, the carrier support (805) is installed with denitrifying bacteria carrier (851) and particulate carbon source (852), the packing frame (801) is located below the drainage pipe (12), the packing frame (801) is filled with a pebble layer (811), a light ceramsite layer (812) and a fine gravel layer (813) from top to bottom, the top of the packing frame (801) is connected to multiple conical heads (814), the outer wall of the conical head (814) abuts against the lower end of the connecting pipe (832).

9. The denitrification wastewater treatment equipment according to claim 6, characterized in that: A backwash pipe (101) is installed in the base (1). A filter screen is installed at the upper end of the backwash pipe (101) and the drain pipe (3). A solenoid valve is installed in the backwash pipe (101), the drain pipe (3) and the sewage pipe (707). A maintenance ladder (14) is connected to the outer wall of the treatment box. A maintenance door (15) is installed at the front end of the impurity removal chamber (6), the flocculation chamber (7) and the denitrification chamber (8). A sludge collection pipe (16) is provided on the rear side of the treatment box. A Y-shaped conduit (17) is connected between the lower end of the unloading trough plate (604) and the sludge collection pipe (16). The lower end of the sewage pipe (707) is connected to the sludge collection pipe (16).

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