CN218146278U

CN218146278U - Denitrification deep bed filter

Info

Publication number: CN218146278U
Application number: CN202222708247.1U
Authority: CN
Inventors: 刘建仙; 廖培基; 周午阳
Original assignee: Changsha Tianchuang Environmental Protection Co ltd; TIANJIN CAPITAL ENVIRONMENTAL PROTECTION GROUP CO Ltd
Current assignee: Changsha Tianchuang Environmental Protection Co ltd; TIANJIN CAPITAL ENVIRONMENTAL PROTECTION GROUP CO Ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2022-12-27
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a denitrification deep bed filtering pond, including edulcoration pond and filtering ponds: the improved water supply device is characterized in that a water inlet pipe is arranged on the impurity removal tank, a water outlet pipe is arranged on the filter tank, a clean water tank is arranged at the outlet end of the water outlet pipe, a sedimentation tank for driving water to flow from bottom to top is arranged between the impurity removal tank and the filter tank, a water distribution layer, a bearing layer, a lower packing layer and an upper packing layer are sequentially arranged in the filter tank from bottom to top, and a water backflushing assembly for respectively and independently supplying water to the lower packing layer and the upper packing layer is arranged on the clean water tank. The utility model discloses in, this filtering pond is through the water recoil subassembly that sets up, can carry out independent and layered water supply operation to two packing layers for the foreign particle that remains after filtering on two packing layers can be followed by comprehensive clearance recoil, avoids the recoil water supply of single aspect and the great packing layer contact of thickness and takes place the sudden reduction of recoil water pressure and can't carry out high-efficient recoil, has improved the effect of water recoil.

Description

Denitrification deep bed filter

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a denitrification deep bed filtering pond.

Background

The denitrification deep bed filter is usually used for removing suspended matters in water treatment, a single-layer homogeneous filter material or a multi-layer filter material filter is deeper than a traditional fast filter, mostly a down-flow gravity filter, the filter material is natural quartz sand, and the multi-layer filter material is anthracite, quartz sand, garnet and the like. The grain diameter of each filter material is arranged according to the sequence of L small and big, the hydraulic load and the nitrate volume load are properly designed, the deep bed filter tank also has the function of denitrification and denitrification, suspended matters and nitrates are synchronously removed, the structure of the deep bed filter tank allows suspended solids in water to penetrate to a deeper position of the filter bed, the sewage interception capability of the filter tank can be improved, and the filtering process comprises filtering and backwashing.

Chinese patent publication No.: CN212127693U discloses a denitrification deep-bed filter, which comprises a treatment tank, wherein an air distribution water distributor is arranged at the bottom inside the treatment tank, two ends of the air distribution water distributor all penetrate through two sides of the treatment tank, a filter brick layer is arranged at the top end of the air distribution water distributor, a bearing layer is arranged at the top end of the filter brick layer, a filter material layer is arranged at the top end of the bearing layer, a connecting frame is arranged on one side of the top end of the treatment tank, a back-flushing water outlet channel is arranged on one side of the connecting frame, inlet pipes are arranged at two ends of the air distribution water distributor, a second fixing ring is arranged outside one end of each inlet pipe, a first fixing ring is arranged outside two ends of each air distribution water distributor, a first sealing gasket is arranged between each air distribution water distributor and the inlet pipe, a sealing ring is arranged on one side of the first fixing ring, a sealing groove is formed on one side of the second fixing ring, a first sealing gasket is arranged inside the sealing groove, the sealing ring is arranged inside the first sealing ring, an installation cylinder is arranged outside the joint of the inlet pipe and the air distribution water distributor, the first fixing ring and the second fixing ring are both located inside the installation cylinder, a holding rod is arranged outside the holding rod, and one end of the holding rod is located inside the installation cylinder.

The deep bed of denitrification is strained in order to improve the filter effect for the thickness of packing layer is generally thicker, and when the recoil water structure was back-washed the packing layer, the recoil rivers can lead to water pressure to descend after contacting with thicker packing layer, makes the recoil effort of recoil rivers to the packing layer less, thereby has reduced the recoil effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a deep bed filtering pond of denitrification to the independent water supply recoil of thick packing layer layering, reduce water pressure loss, improve the recoil effect.

In order to achieve the above object, the present invention provides the following technical solutions: a denitrification deep bed filter tank comprises an impurity removal tank and a filter tank:

a water inlet pipe is arranged on the impurity removing tank, a water outlet pipe is arranged on the filtering tank, and a clean water tank is arranged at the outlet end of the water outlet pipe;

a sedimentation tank for driving water flow to flow from bottom to top and then from top to bottom is arranged between the impurity removing tank and the filtering tank;

a water distribution layer, a supporting layer, a lower packing layer and an upper packing layer are sequentially arranged in the filter tank from bottom to top;

and a water backflushing assembly for respectively and independently supplying water to the lower packing layer and the upper packing layer is arranged on the clean water tank.

As a further description of the above technical solution:

the water backflushing assembly comprises a water pump arranged in the clean water tank, a water outlet of the water pump is provided with a backflushing water pipe extending into the filtering tank, and a short punch and a long punch which extend to the bottoms of the lower packing layer and the upper packing layer are arranged on the backflushing water pipe at intervals.

As a further description of the above technical solution:

the gas back flushing component is also included;

the gas recoil component comprises an air blower, a recoil air pipe extending into the filtering tank is arranged at an air outlet of the air blower, and a short gas nozzle and a long gas nozzle extending to the bottoms of the lower packing layer and the upper packing layer are arranged on the recoil air pipe at intervals.

As a further description of the above technical solution:

the inner wall of the impurity removal tank is provided with a V-shaped filter frame, the bottom of the filter frame is connected with the sewage collection tank through a blow-off pipe, and the blow-off pipe is provided with a stop valve.

As a further description of the above technical solution:

the inner wall of the sedimentation tank is provided with a middle partition plate, and conical flow guide blocks are arranged on the inner wall of the sedimentation tank and the middle partition plate in a staggered mode.

As a further description of the above technical solution:

the bottom of sedimentation tank is provided with the sludge impoundment, and is provided with the sludge pump in the sludge impoundment, and the sludge pump passes through the sludge pipe and is connected with the dirty pond of collection.

As a further description of the above technical solution:

and a backwashing water pipe is arranged on the filter tank, and a filter cover is arranged at the inlet end of the backwashing water pipe.

In the technical scheme, the utility model provides a pair of deep bed filtering pond of denitrification has following beneficial effect:

the filter tank can carry out independent and layered water supply operation on the two packing layers through the arranged water backflushing assembly, so that impurity particles remained on the two packing layers after filtration can be backflushed by comprehensive cleaning, the phenomenon that the backflushing water pressure is sharply reduced due to the fact that the backflushing water supply of a single layer is contacted with the packing layer with larger thickness is avoided, and efficient backflushing cannot be carried out, and the effect of water backflushing is greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

FIG. 1 is a schematic structural view of a denitrification deep-bed filter according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a water backflushing assembly provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an air recoil assembly provided by an embodiment of the present invention.

Description of reference numerals:

1. a water inlet pipe; 2. an impurity removal tank; 3. a sedimentation tank; 4. a filtration tank; 5. a water outlet pipe; 6. a clean water tank; 7. a filter frame; 8. a stop valve; 9. a blow-off pipe; 10. a sewage collecting pool; 11. a sludge tank; 12. a sludge pump; 13. a sludge pipe; 14. a middle partition plate; 15. a flow guide block; 16. a filter housing; 17. backwashing the water pipe; 18. a water backflush assembly; 181. a water pump; 182. a backwash pipe; 183. a long punch; 184. a short punch; 19. a gas recoil assembly; 191. a blower; 192. back flushing the air pipe; 193. a short showerhead; 194. a long showerhead; 20. preparing a water layer; 21. a support layer; 22. a lower packing layer; 23. and (4) filling a filler layer.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-3, a denitrification deep bed filter comprises a trash removal tank 2 and a filter tank 4:

the impurity removing pool 2 is provided with a water inlet pipe 1, sewage is guided into the impurity removing pool 2 through the water inlet pipe 1 for primary impurity removing treatment, the filter pool 4 is provided with a water outlet pipe 5, the outlet end of the water outlet pipe 5 is provided with a clean water pool 6, and clean water after filtering treatment flows into the clean water pool 6 through the water outlet pipe 5 to be collected;

a sedimentation tank 3 which drives water flow to flow from bottom to top and then from top to bottom is arranged between the impurity removal tank 2 and the filtering tank 4, so that the sewage subjected to primary impurity removal enters the sedimentation tank 3, flows from bottom to top and then flows from top to bottom, the flow path of the sewage can be increased, and the sedimentation efficiency of particle impurities in the sewage is accelerated;

a water distribution layer 20, a supporting layer 21, a lower packing layer 22 and an upper packing layer 23 are arranged in the filter tank 4 from bottom to top in sequence;

the clean water tank 6 is provided with the water backflushing assembly 18 which supplies water to the lower packing layer 22 and the upper packing layer 23 respectively and independently, and independent and layered water supply operation can be carried out on the lower packing layer 22 and the upper packing layer 23, so that impurity particles left on the lower packing layer 22 and the upper packing layer 23 after filtration can be cleaned and backflushed comprehensively, the phenomenon that the backflushing water pressure is reduced sharply to avoid high-efficiency backflushing due to the fact that the backflushing water supply on a single layer is in contact with the packing layer with larger thickness is avoided, and the effect of water backflushing is greatly improved;

the filter tank 4 is provided with a backwash water pipe 17, and the inlet end of the backwash water pipe 17 is provided with a filter cover 16, so that the backwashed sewage is discharged outwards through the backwash water pipe 17, and the filler in the filler layer is prevented from being flushed out of the filter tank 4 under the blocking of the filter cover 16.

The water backflushing component 18 comprises a water pump 181 arranged in the clean water tank 6, a backflushing water pipe 182 extending into the filter tank 4 is arranged at a water outlet of the water pump 181, short punches 184 and long punches 183 extending to the bottoms of the lower packing layer 22 and the upper packing layer 23 are arranged on the backflushing water pipe 182 at intervals, the water pump 181 extracts clean water in the clean water tank 6 to enter the backflushing water pipe 182 and is sprayed out by the short punches 184 and the long punches 183 to respectively perform backflushing water treatment on the lower packing layer 22 and the upper packing layer 23, and granular impurities on the lower packing layer 22 and the upper packing layer 23 can be backflushed and cleaned.

Still include gas recoil subassembly 19, gas recoil subassembly 19 includes air-blower 191, the gas outlet of air-blower 191 is provided with the recoil trachea 192 that extends to in the filtering ponds 4, and the interval is provided with the short jet head 193 and the long jet head 194 that extend to lower packing layer 22 and upper packing layer 23 bottom on the recoil trachea 192, air-blower 191 starts to extract external air and gets into in the recoil trachea 192 to spout by short jet head 193 and long jet head 194, carry out the recoil gas processing to lower packing layer 22 and upper packing layer 23 respectively, can clear up the back flush of granule impurity on lower packing layer 22 and the upper packing layer 23.

The inner wall of edulcoration pond 2 is provided with the filter frame 7 of V-arrangement, and the bottom of filter frame 7 is passed through blow off pipe 9 and is connected with album dirty pond 10, and is provided with stop valve 8 on the blow off pipe 9, and filter frame 7 can filter the granule mud that enters into in the sewage of edulcoration pond 2 to through opening behind the stop valve 8, make mud enter into collection dirty pond 10 via blow off pipe 9 and collect, can play the effect of automatic clearance to the granule mud on the filter frame 7.

The inner wall of sedimentation tank 3 is provided with median septum 14, and the inner wall dislocation of sedimentation tank 3 and median septum 14 is provided with conical water conservancy diversion piece 15, and water conservancy diversion piece 15 is located 3 interior sewage of sedimentation tank in the passageway that flows from bottom to top, can play the effect of baffling direction to sewage, increases sewage and the area of contact of water conservancy diversion piece 15 to accelerate the precipitation efficiency of mud in the sewage.

The bottom of sedimentation tank 3 is provided with sludge impoundment 11, and is provided with sludge pump 12 in the sludge impoundment 11, and sludge pump 12 passes through sludge pipe 13 and is connected with the dirty pond 10 of collection, and the mud that deposits in the sedimentation tank 3 gets into and collects in the sludge impoundment 11 to under sludge pump 12's effect, get into collection dirty pond 10 in via sludge pipe 13 and collect, can realize the automatic blowdown effect of mud.

Certain exemplary embodiments of the present invention have been described above by way of illustration only, and it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive on the scope of the appended claims.

Claims

1. The utility model provides a denitrification deep bed filtering pond, includes edulcoration pond (2) and filtering ponds (4), its characterized in that:

a water inlet pipe (1) is arranged on the impurity removing tank (2), a water outlet pipe (5) is arranged on the filtering tank (4), and a clean water tank (6) is arranged at the outlet end of the water outlet pipe (5);

a sedimentation tank (3) for driving water flow to flow from bottom to top and then from top to bottom is arranged between the impurity removal tank (2) and the filtering tank (4);

a water distribution layer (20), a supporting layer (21), a lower packing layer (22) and an upper packing layer (23) are sequentially arranged in the filtering tank (4) from bottom to top;

and a water backflushing assembly (18) which supplies water to the lower packing layer (22) and the upper packing layer (23) independently is arranged on the clean water tank (6).

2. The denitrification deep-bed filter according to claim 1, characterized in that: the water backflushing assembly (18) comprises a water pump (181) arranged in the clean water tank (6), a water outlet of the water pump (181) is provided with a backflushing water pipe (182) extending into the filter tank (4), and the backflushing water pipe (182) is provided with a short punch (184) and a long punch (183) at intervals, wherein the short punch and the long punch extend to the bottoms of the lower packing layer (22) and the upper packing layer (23).

3. The denitrification deep-bed filter according to claim 1, characterized in that: also comprises a gas recoil component (19);

the gas backflushing assembly (19) comprises a blower (191), a backflushing gas pipe (192) extending into the filter tank (4) is arranged at a gas outlet of the blower (191), and short gas nozzles (193) and long gas nozzles (194) extending to the bottoms of the lower packing layer (22) and the upper packing layer (23) are arranged on the backflushing gas pipe (192) at intervals.

4. The denitrification deep-bed filter according to claim 1, characterized in that: the inner wall of the impurity removal tank (2) is provided with a V-shaped filter frame (7), the bottom of the filter frame (7) is connected with a sewage collection tank (10) through a sewage discharge pipe (9), and a stop valve (8) is arranged on the sewage discharge pipe (9).

5. The denitrification deep-bed filter according to claim 1, characterized in that: the inner wall of the sedimentation tank (3) is provided with a middle partition plate (14), and conical flow guide blocks (15) are arranged on the inner walls of the sedimentation tank (3) and the middle partition plate (14) in a staggered mode.

6. The denitrification deep-bed filter according to claim 1, characterized in that: the bottom of sedimentation tank (3) is provided with sludge impoundment (11), and is provided with sludge pump (12) in sludge impoundment (11), and sludge pump (12) are connected with dirty pond (10) of collection through sludge pipe (13).

7. The denitrification deep-bed filter according to claim 1, characterized in that: a backwashing water pipe (17) is arranged on the filtering tank (4), and a filter cover (16) is arranged at the inlet end of the backwashing water pipe (17).