CN222556711U

CN222556711U - A multi-stage denitrification deep bed filter

Info

Publication number: CN222556711U
Application number: CN202421268907.1U
Authority: CN
Inventors: 袁江; 欧阳焱; 谢新征; 李松鹏; 金向阳; 谭翔升
Original assignee: GUANGDONG DONGRI ENVIRONMENTAL PROTECTION CO Ltd
Current assignee: GUANGDONG DONGRI ENVIRONMENTAL PROTECTION CO Ltd
Priority date: 2024-06-05
Filing date: 2024-06-05
Publication date: 2025-03-04
Anticipated expiration: 2034-06-05

Abstract

The utility model discloses a multi-stage denitrification deep bed filter, including a tank body, a middle filter box is fixedly installed on the top of the tank body, a top filter box is fixedly installed on the top of the middle filter box, a coarse sand layer is fixedly connected to the bottom position in the top filter box, and a fine sand layer, an activated carbon layer, a fiber filter net and a membrane filter layer are fixedly connected to the inside of the middle filter box in sequence from top to bottom. The multi-stage denitrification deep bed filter realizes automatic cleaning of the coarse sand layer by arranging a cleaning brush in the top filter box, in conjunction with the sliding structure of the cylinder, the driving motor and the moving plate. The cleaning brush is driven by the driving motor, and the cylinder moves the moving plate back and forth along the supporting slide rod, effectively removing organic matter, microbial residues, dirt and impurities accumulated on the coarse sand layer, significantly improving the cleanliness of the pre-filter layer, and effectively preventing the compaction and clogging of the filter material.

Description

Multistage denitrification deep bed filter

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a multistage denitrification deep bed filter.

Background

The denitrification filter is a treatment unit which combines denitrification and deep bed filtration functions, mainly relies on denitrifying bacteria group biological membranes attached and grown on the surface of a filter material, and utilizes a carbon source to decompose nitrate nitrogen in wastewater under anoxic/anaerobic conditions, so that total nitrogen in the wastewater is removed, and suspended matters and TP in the water are intercepted and removed through adsorption and bridging actions of the filter material.

The existing denitrification deep bed filter design comprises a plurality of stages of water inflow, biological reaction, filtration and the like, wherein the filtration stage usually adopts filter materials such as quartz sand and the like for physical interception so as to remove suspended matters and impurities in the water. However, during actual operation, a prefilter layer, such as a coarse sand layer, plays an important role in the denitrification deep bed filter. They not only can hold back the bigger granule impurity in the water, but also can provide the space that adheres to and grows for denitrifying bacteria, promote the going on of biological denitrification process, however, over time, the prefilter layer can accumulate a large amount of dirt and impurity gradually, for example organic matter, microorganism residuum etc. these accumulations have not only taken up the hole of filter material, reduced the permeability of filter material, still probably lead to the filter material hardening, influence the filter effect, when accumulating to a certain extent, the prefilter layer will take place to block up, lead to the inflow to reduce, even block completely, this has not only influenced the normal operating of filtering pond, still probably cause adverse effect to subsequent treatment technology, like increasing the burden of subsequent treatment unit, reduce overall treatment efficiency.

Disclosure of utility model

The utility model aims to provide a multistage denitrification deep bed filter, which aims to solve the problems that in the background technology, a large amount of dirt and impurities such as organic matters, microorganism residues and the like can be gradually accumulated in a pre-filtering layer, the accumulated matters not only occupy the pores of a filter material and reduce the permeability of the filter material, but also can cause hardening of the filter material and influence the filtering effect, and when the accumulated matters are accumulated to a certain extent, the pre-filtering layer is blocked to reduce the water inflow and even completely block, so that the normal operation of the filter is influenced, and adverse effects on the subsequent treatment process, such as increasing the burden of a subsequent treatment unit and reducing the overall treatment efficiency, are possibly caused.

The multistage denitrification deep bed filter comprises a tank body, wherein a middle section filter box is fixedly arranged at the top of the tank body, a top end filter box is fixedly arranged at the top of the middle section filter box, a coarse sand layer is fixedly connected to the position, close to the bottom, in the top end filter box, a fine sand layer, an active carbon layer, a fiber filter screen and a membrane filter layer are sequentially and fixedly connected to the inside of the middle section filter box from top to bottom, supporting slide rods are fixedly connected to the front end, close to the bottom, of the top end filter box and the upper part, corresponding to the coarse sand layer, of the rear end, support slide rods are fixedly connected to the positions, close to the two sides, of the two support slide rods, a driving motor is fixedly arranged at the top of the moving plate, and a cleaning brush is fixedly arranged at the output end, penetrating through the outside of the moving plate, of the bottom of the driving motor.

Compared with the prior art, the utility model has the beneficial effects that:

According to the multistage denitrification deep bed filter, through the arrangement of the cleaning brush in the top end filter box and the cooperation of the sliding structure of the air cylinder, the driving motor and the moving plate, the automatic cleaning of the coarse sand layer is realized, the air cylinder drives the moving plate to reciprocate along the supporting sliding rod under the driving of the driving motor, organic matters accumulated on the coarse sand layer, microorganism residue dirt and impurities are effectively removed, the cleanliness of the pre-filtering layer is obviously improved, the hardening and blocking phenomenon of filter materials are effectively prevented, the pre-filtering layer still can keep good filtering performance even after long-time running, the problem of water inflow reduction or complete blocking caused by blocking is avoided, and due to the improvement of the cleanliness and the permeability recovery of the coarse sand layer, the treatment efficiency of the whole denitrification deep bed filter is obviously improved, the water inflow is stable, the filtering effect is good, high-quality water inflow conditions are provided for a subsequent treatment process, the burden of a subsequent treatment unit is reduced, and the overall treatment efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is an enlarged partial schematic view of the FIG. 2A;

Fig. 4 is a structural perspective view of the moving plate of the present utility model.

In the figure, 1, a pool body; 2, a middle section filter box, 3, a top end filter box, 4, a water inlet pipe, 5, a coarse sand layer, 6, a fine sand layer, 7, an active carbon layer, 8, a fiber filter screen, 9, a membrane filter layer, 10, a water collecting tank, 11, a connecting water pipe, 12, a water pump, 13, a water drain pipe, 14, a first spray head, 15, a second spray head, 16, a drainage plate, 17, a supporting slide rod, 18, a moving plate, 19, a waterproof shell, 20, a driving motor, 21, a cleaning brush, 22, a cylinder, 23, a push rod, 24 and a movable sealing door.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a technical scheme that the multistage denitrification deep bed filter comprises a tank body 1, wherein a middle section filter box 2 is fixedly arranged at the top of the tank body 1, a top end filter box 3 is fixedly arranged at the top of the middle section filter box 2, a coarse sand layer 5 is fixedly connected to the position near the bottom in the top end filter box 3, a fine sand layer 6, an activated carbon layer 7, a fiber filter screen 8 and a membrane filter layer 9 are sequentially and fixedly connected to the inside of the middle section filter box 2 from top to bottom, supporting slide rods 17 are fixedly connected to the front end and the rear end of the position near the bottom in the top end filter box 3 above the coarse sand layer 5, moving plates 18 are slidably connected to the positions near the two sides of the two supporting slide rods 17, a driving motor 20 is fixedly arranged at the top of the moving plates 18, and a cleaning brush 21 is fixedly arranged at the output end of the bottom of the driving motor 20 penetrating to the outside of the moving plates 18.

The center at the top of the top end filter box 3 is communicated with a water inlet pipe 4.

The equal fixed mounting in both sides position of leaning on at top rose box 3 top has header tank 10, the bottom fixed mounting in header tank 10 has water pump 12, the output intercommunication of water pump 12 bottom has drain pipe 13, the bottom of drain pipe 13 runs through to the inside of top rose box 3 and communicates there is connecting water pipe 11, the center intercommunication of connecting water pipe 11 bottom has shower nozzle one 14, the both sides of connecting water pipe 11 bottom all communicate there is shower nozzle two 15, can thoroughly clear away the residue on the coarse sand layer 5, keep the permeability and the filter effect of filter layer.

Both sides of the inner bottom of the top end filter box 3 are fixedly connected with drainage plates 16 corresponding to the lower part of the coarse sand layer 5, so that water can be conveniently guided into the middle section filter box 2.

The top of the movable plate 18 corresponds to the outside fixedly connected with waterproof shell 19 of driving motor 20, can play waterproof effect, and the total number that driving motor 20 set up is six.

The center of the both sides of the top end filter box 3 is fixedly provided with the air cylinders 22, the output ends of the opposite sides of the two air cylinders 22 penetrate through the inside of the top end filter box 3 and are fixedly connected with the push rods 23, one side of each push rod 23 is fixedly connected with the center of one side of the moving plate 18, the moving plate 18 can be conveniently driven to move, and the cleaning brush 21 can conveniently clean the coarse sand layer 5 comprehensively.

The movable sealing door 24 is movably arranged on the front surface of the top end filter box 3 near the center, and the bottom of one side of the tank body 1 is communicated with a water outlet pipe.

The working principle is that sewage firstly enters the top filter box 3 through the water inlet pipe 4. In the top filter box 3, the coarse sand layer 5 serves as a pre-filtering layer, larger particles and suspended matters in sewage are firstly trapped and removed, then the sewage subjected to preliminary treatment flows into the middle filter box 2 through the guide of the drainage plate 16, in the middle filter box 2, the sewage sequentially passes through the fine sand layer 6, the activated carbon layer 7, the fiber filter screen 8 and the membrane filter layer 9 for multistage filtration, the fine sand layer 6 further removes smaller particles in the sewage, the activated carbon layer 7 removes organic matters and certain soluble impurities through adsorption, the fiber filter screen 8 and the membrane filter layer 9 provide finer filtering effects, the water quality of effluent is ensured to meet the requirement, and the clean water subjected to multistage filtration is finally discharged through a water outlet pipe on one side of the tank body 1, so that the whole treatment process is completed; when the coarse sand layer 5 needs to be cleaned, the air cylinder 22 starts to work, the output end of the air cylinder pushes the push rod 23 to move, the push rod 23 is connected with the moving plate 18, so that the moving plate 18 is driven to slide along the supporting slide rod 17, the driving motor 20 and the cleaning brush 21 mounted on the moving plate 18 move to the upper side of the coarse sand layer 5 along with the movement, after the driving motor 20 is started, the output end of the bottom of the driving motor drives the cleaning brush 21 to rotate, meanwhile, the moving plate 18 is pushed by the air cylinder 22 and the push rod 23 to reciprocate along the supporting slide rod 17, so that the cleaning brush 21 can comprehensively clean the surface of the coarse sand layer 5, in addition, the water pump 12 in the water collecting tank 10 starts to work, water is supplied to the first spray head 14 and the second spray head 15 through the water drain pipe 13 and the connecting water flow sprayed by the first spray head 14 and the second spray head 15 can cooperate with the work of the cleaning brush 21, and residues on the coarse sand layer 5 are further washed thoroughly.

In summary, the multistage denitrification deep bed filter is characterized in that through the arrangement of the cleaning brush 21 in the top end filter box 3 and the sliding structure of the cylinder 22, the driving motor 20 and the moving plate 18, the automatic cleaning of the coarse sand layer 5 is realized, the cleaning brush 21 is driven by the driving motor 20 to reciprocate the moving plate 18 along the supporting sliding rod 17, organic matters, microorganism residue dirt and impurities accumulated on the coarse sand layer 5 are effectively removed by the cylinder 22, the cleanliness of a pre-filtering layer is remarkably improved, the hardening and blocking phenomenon of filter materials are effectively prevented, the pre-filtering layer can still maintain good filtering performance even after long-time operation, the problem of reduced or complete blocking of water inflow caused by blocking is avoided, the treatment efficiency of the whole denitrification deep bed filter is remarkably improved due to the improvement of the cleanliness and the permeability recovery of the coarse sand layer 5, the water inflow is stable, the filtering effect is good, high-quality water inflow conditions are provided for the subsequent treatment process, the burden of a subsequent treatment unit is reduced, and the overall treatment efficiency is improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The multistage denitrification deep bed filter comprises a tank body (1) and is characterized in that a middle section filter box (2) is fixedly arranged at the top of the tank body (1), a top filter box (3) is fixedly arranged at the top of the middle section filter box (2), a coarse sand layer (5) is fixedly connected to the position, close to the bottom, in the top filter box (3), a fine sand layer (6), an active carbon layer (7), a fiber filter screen (8) and a membrane filter layer (9) are sequentially and fixedly connected to the inside of the middle section filter box (2) from top to bottom, support slide bars (17) are fixedly connected to the positions, close to the two sides, of the two support slide bars (17), of the top filter box (18) respectively, a driving motor (20) is fixedly arranged at the top of the moving plate (18), and a cleaning brush (21) is fixedly arranged at the output end, penetrating through the bottom of the driving motor (20), of the moving plate (18), of the outside.

2. The multistage denitrification deep bed filter as claimed in claim 1, wherein the center of the top filter box (3) is communicated with a water inlet pipe (4).

3. The multistage denitrification deep bed filter as claimed in claim 1, wherein the water collecting tank (10) is fixedly arranged at the two sides of the top filter tank (3), the water pump (12) is fixedly arranged at the bottom in the water collecting tank (10), the water outlet end of the bottom of the water pump (12) is communicated with the water outlet pipe (13), the bottom of the water outlet pipe (13) penetrates through the inside of the top filter tank (3) and is communicated with the connecting water pipe (11), the first spray head (14) is communicated with the center of the bottom of the connecting water pipe (11), and the second spray head (15) is communicated with the two sides of the bottom of the connecting water pipe (11).

4. The multistage denitrification deep bed filter as claimed in claim 1, wherein drainage plates (16) are fixedly connected to the lower parts of the coarse sand layers (5) corresponding to the two sides of the inner bottom of the top filter tank (3).

5. The multistage denitrification deep bed filter as claimed in claim 1, wherein a waterproof shell (19) is fixedly connected to the outer side of the top of the movable plate (18) corresponding to the driving motor (20), and the total number of the driving motors (20) is six.

6. The multistage denitrification deep bed filter as claimed in claim 1, wherein the centers of two sides of the top end filter box (3) are fixedly provided with air cylinders (22), the output ends of two opposite sides of the air cylinders (22) penetrate through the inside of the top end filter box (3) and are fixedly connected with push rods (23), and one side of each push rod (23) is fixedly connected with the center of one side of the movable plate (18).

7. The multistage denitrification deep bed filter as claimed in claim 1, wherein a movable sealing door (24) is movably arranged near the center of the front surface of the top filter tank (3), and a water outlet pipe is communicated with the bottom of one side of the tank body (1).