CN218988981U - Denitrification deep bed filter tank - Google Patents

Abstract

The utility model discloses a denitrification deep bed filter, which comprises a deep bed filter, wherein the middle part of the inner bottom end of the deep bed filter is provided with a water distribution tank, the front end of the water distribution tank is provided with a water inlet A in a penetrating way, the bottom side of the middle part of the rear end of the deep bed filter is provided with a backwash water inlet in a penetrating way, and the combination of a filter brick, a pebble layer and a quartz sand layer is a treatment unit which combines biological denitrification and filtration functions into a whole and can be fully combined with other sewage treatment units, so that the denitrification process and the filtration process can be completed by utilizing a single Chi Bianke.

Description

Denitrification deep bed filter tank

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a denitrification deep bed filter.

Background

If the biological filter is used for removing nitrogen, the nitrification filter and the denitrification filter are generally connected in series, the denitrification filter can be divided into a front denitrification filter and a rear denitrification filter, and when the carbon source of the inlet water is sufficient, the denitrification process of the front denitrification filter and the nitrification filter is mostly adopted, and the denitrification process needs at least two reaction tanks to respectively perform denitrification and nitrification processes, so that the denitrification equipment has the defect of large occupied area.

Therefore, the biological filter with the nitrification and denitrification functions has the bulletin number of CN211847349U, and relates to the technical field of sewage treatment, and the biological filter comprises a water distribution channel, a water distribution and gas distribution layer, a support layer, a denitrification filter material layer, an aeration layer, a nitrification filter material layer and a clear water area, wherein the water distribution channel, the water distribution and gas distribution layer, the support layer, the denitrification filter material layer, the aeration layer, the nitrification filter material layer and the clear water area are sequentially arranged from bottom to top along the vertical direction, and the water distribution and gas distribution layer is of a filter brick structure.

For the biological filter with the nitrification and denitrification functions, although the nitrification filter material layer and the denitrification filter material layer are arranged in the same filter to realize the nitrification and denitrification functions, compared with a two-stage series process, the biological filter with the nitrification and denitrification functions can effectively reduce the occupied area of equipment and reduce the corresponding construction cost, but the biological filter still has the following obvious defects in the use process: the denitrification deep bed filter is not denitrified by adopting a gravity flow water inlet mode, so that solid suspended matters cannot be effectively removed in filtration and back flushing, meanwhile, a clean water filter and a fine filter are additionally needed in filtration, the denitrification process and the filtration process are completed by utilizing a plurality of filters, and the sewage denitrification treatment efficiency is lower.

Disclosure of Invention

The utility model aims to provide a denitrification deep bed filter tank to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a denitrification deep bed filtering pond, includes the deep bed filtering pond, the middle part of the inside bottom in deep bed filtering pond is equipped with the water distribution tank, the front end of water distribution tank runs through and is equipped with A water inlet, the bottom side at deep bed filtering pond rear end middle part runs through and is equipped with the backwash water inlet, the both sides of water distribution tank are equipped with evenly and are equipped with the support frame, the left side upper end of support frame is equipped with the air feed and is responsible for, the tip one end that the air feed was responsible for is connected with main gas riser, the right flank equidistance that the air feed was responsible for is connected with the gas distribution branch pipe, the filter brick has been laid to the surface equidistance of gas distribution branch pipe, the pebble layer has evenly been laid to the surface of filter brick, the quartz sand layer has evenly been laid to the surface of pebble layer.

The upper end of the right side of the rear side of the deep bed filter tank is provided with a backwashing water outlet in a penetrating way, and the upper part of the front end of the deep bed filter tank is provided with a B water inlet, so that the sewage can be backwashed, the backwashed water flows out through the backwashing water outlet, and meanwhile, the sewage can enter through the B water inlet, so that the sewage is filtered from top to bottom

The overflow water outlet weir is arranged at the upper end of one side wall of the interior of the deep bed filter, and a clear water area is formed between the port of the deep bed filter and the end face of the quartz sand layer, so that water flushed from bottom to top can flow into the overflow water outlet weir, and meanwhile, the functions of filtering and flushing sewage can be realized at the same time.

The diameter of the sand grain of the quartz sand in the quartz sand layer is 2-3mm, so that the wastewater can be completely contacted with the biological film on the surface of the medium, and even short-time short-flow or super-water flow impact can not affect the system.

The utility model has the technical effects and advantages that: the denitrification deep bed filter is characterized in that a filter brick, a pebble layer and a quartz sand layer are combined to form a treatment unit which integrates biological denitrification and filtration functions, the denitrification deep bed filter can be fully combined with other sewage treatment units, has multiple functions of denitrification, dephosphorization, suspended matters removal and the like, and can enable sewage to flow into the deep bed filter through a water inlet B through the arrangement of the pebble layer and the quartz sand layer, so that the sewage can effectively remove solid suspended matters after flowing through the quartz sand layer, the pebble layer and the filter brick in a gravity downflow mode, and the functions of denitrification and filtration can be completed on the sewage by utilizing a single Chi Bianke without adding a purified water and a fine filter, thereby effectively removing pollutants of SS, TP and TN.

The device has the advantages of simple and practical structure, integrated function of removing various pollutants in European style, good treatment effect, stable water outlet quality, low carbon source addition amount, low running cost, low turbidity of the water outlet after sewage treatment and excellent removal effect on SS pollutants.

Meanwhile, the denitrification deep bed filter can enable sewage to flow downwards to pass through the quartz sand layer, the pebble layer and the filter bricks for filtering, and in the process of flushing the sewage, water can be input by utilizing the water distribution tank, and the sewage is aerated and up-flowed for flushing by utilizing the combination of the main air supply pipe, the main air riser and the air distribution branch pipe, so that substances such as total nitrogen, total phosphorus and the like can be removed quite well, and the service life of the filter can be further prolonged.

Drawings

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

FIG. 2 is a side view of the present utility model;

FIG. 3 is a top view of the water distribution trough of the present utility model;

FIG. 4 is a top view of a filter block of the present utility model;

FIG. 5 is a top view of the gas distribution manifold of the present utility model;

fig. 6 is a top view of the present utility model.

In the figure: 1. a deep bed filter tank; 2. a water distribution tank; 3. a, a water inlet; 4. backwashing the water inlet; 5. a support frame; 6. a main air supply pipe; 7. a main gas riser; 8. a gas distribution branch pipe; 9. a filter brick; 10. a pebble layer; 11. a quartz sand layer; 12. a water inlet B; 13. and backwashing the water outlet.

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. 1-6, the present utility model provides a technical solution: the utility model provides a denitrification deep bed filtering pond, including deep bed filtering pond 1, the middle part of the inside bottom of deep bed filtering pond 1 is equipped with water distribution tank 2, can make backwash water get into inside the deep bed filtering pond 1 by the A water inlet 3 that sets up on the water distribution tank 2, the front end of water distribution tank 2 runs through and is equipped with A water inlet 3, can make backwash water effectually get into inside the water distribution tank 2, the front end upper portion of deep bed filtering pond 1 is equipped with B water inlet 12, can make sewage have the mode of top-down gravity flow to get into the upper end of deep bed filtering pond 1, the bottom side in the middle part of deep bed filtering pond 1 rear end runs through and is equipped with backwash water inlet 4, can get into the inside of deep bed filtering pond 1 backwash water through backwash water inlet 4.

The back side right side upper end of deep bed filtering pond 1 runs through and is equipped with backwash delivery port 13, can effectively handle the effect that the back was passed through backwash delivery port 13 and flow out with backwash water, the both sides of water distribution groove 2 are equipped with evenly and are equipped with support frame 5, can make the air feed be responsible for 6 fixed the setting in its terminal surface, the left side upper end of support frame 5 is equipped with air feed and is responsible for 6, be convenient for let in gas to the inside of deep bed filtering pond 1, the tip one end of air feed is responsible for 6 is connected with main gas riser 7, be convenient for with gas distribution to the gas distribution branch pipe 8 in through main gas riser 7, the right flank equidistance of air feed is responsible for 6 is connected with gas distribution branch pipe 8, can aerate sewage, filter water.

The filter bricks 9 are uniformly paved on the surface of the air distribution branch pipe 8, the functions of upper water distribution, lower water delivery and self stress balance are achieved, the pebble layer 10 is uniformly paved on the surface of the filter bricks 9, the quartz sand layer 11 is uniformly paved on the surface of the pebble layer 10, the diameter of sand grains of quartz sand in the quartz sand layer 11 is 2-3mm, an overflow water outlet weir is arranged at the upper end of one side wall of the interior of the deep bed filter tank 1, a clean water area is formed between the port of the deep bed filter tank 1 and the end face of the quartz sand layer 11, and treated water can flow into the clean water area and then flow out to the outside through the overflow water outlet weir.

Specifically, the combination of the filter brick 9, the pebble layer 10 and the quartz sand layer 11 is a treatment unit which combines biological denitrification and filtration functions into a whole and can be fully combined with other sewage treatment units, has multiple functions of denitrification, dephosphorization, suspended matter removal and the like, and the arrangement of the pebble layer 10 and the quartz sand layer 11 can enable sewage to flow into the deep bed filter tank 1 through the B water inlet 12, so that the sewage can effectively remove solid suspended matters after flowing through the quartz sand layer 11, the pebble layer 10 and the filter brick 9 in a gravity downflow mode, and the functions of denitrification and filtration of the sewage can be completed by utilizing the single Chi Bianke without adding purified water and a precise filter tank, thereby effectively removing pollutants of SS, TP and TN.

Meanwhile, the denitrification deep bed filter can enable sewage to flow downwards to perform the filtering function of the quartz sand layer 11, the pebble layer 10 and the filter bricks 9, in the sewage flushing process, water can be input by using the water distribution tank 2, and the sewage is aerated and up-flowed by using the combination of the air supply main pipe 6, the main air vertical pipe 7 and the air distribution branch pipe 8 for flushing, so that substances such as total nitrogen, total phosphorus and the like can be removed quite well, and the service life of the filter can be further prolonged.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (4)

1. The denitrification deep bed filter comprises a deep bed filter (1), and is characterized in that: the deep bed filter is characterized in that the middle part of the inner bottom end of the deep bed filter (1) is provided with a water distribution groove (2), the front end of the water distribution groove (2) is penetrated and provided with an A water inlet (3), the bottom side of the middle part of the rear end of the deep bed filter (1) is penetrated and provided with a backwash water inlet (4), the two sides of the water distribution groove (2) are provided with supporting frames (5) uniformly, the left upper end of each supporting frame (5) is provided with a main air riser (7) connected with one end of each main air riser (6), the right side surface equidistance of each main air riser (6) is connected with an air distribution branch pipe (8), the surface equidistance of each air distribution branch pipe (8) is paved with filter bricks (9), the surface of each filter brick (9) is uniformly paved with a pebble layer (10), and the surface of each pebble layer (10) is uniformly paved with a quartz sand layer (11).

2. The denitrification deep bed filter as claimed in claim 1, wherein: the right upper end of the rear side surface of the deep bed filter tank (1) is provided with a backwashing water outlet (13) in a penetrating way, and the upper part of the front end of the deep bed filter tank (1) is provided with a B water inlet (12).

3. The denitrification deep bed filter as claimed in claim 1, wherein: an overflow water outlet weir is arranged at the upper end of one side wall of the interior of the deep bed filter tank (1), and a clear water zone is formed between a port of the deep bed filter tank (1) and the end face of the quartz sand layer (11).

4. The denitrification deep bed filter as claimed in claim 1, wherein: the diameter of sand grains of quartz sand in the quartz sand layer (11) is 2-3mm, and the deep bed filter tank (1) is provided with three groups.

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