CN213388261U

CN213388261U - Coking wastewater composite denitrification filter tank device

Info

Publication number: CN213388261U
Application number: CN202022345577.XU
Authority: CN
Inventors: 剧盼盼; 刘洪泉; 高麦霞; 次新波; 刘斌; 陈卫江
Original assignee: Hebei Synergy Water Treatment Technology Co ltd
Current assignee: Hebei Synergy Water Treatment Technology Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-06-08
Anticipated expiration: 2030-10-20

Abstract

The utility model relates to a coking wastewater technical field just discloses a compound denitrification filtering pond device of coking wastewater, the on-line screen storage device comprises a base, the bottom swing joint of base has the supporting shoe, the mounting groove has been seted up to the bottom of supporting shoe, the inner wall swing joint of mounting groove has construction bolt. The method is characterized in that an external carbon source is used as an electron donor in the heterotrophic pond, the heterotrophic pond and the autotrophic pond are fully reacted by microorganisms carried by a first filter material, a second filter material and a third filter material, part of nitrate nitrogen is preliminarily degraded, the redundant carbon source can be further degraded in the buffer pond and the autotrophic pond, and the residual nitrate nitrogen is subjected to nitrate reduction reaction by sulfur autotrophic denitrifying bacteria to realize the purpose of further denitrification.

Description

Coking wastewater composite denitrification filter tank device

Technical Field

The utility model relates to a coking wastewater technical field specifically is a coking wastewater composite denitrification filtering pond device.

Background

Coking wastewater is typical industrial wastewater generated in the processes of high-temperature dry distillation, coal gas purification, byproduct recovery and refining of coal, the total nitrogen concentration is higher, an A/O, A2/O single-stage denitrification process is adopted by coking enterprises which are operated at present, the total nitrogen of effluent is difficult to reach the standard, and with zero discharge of coking wastewater and salt extraction requirement, deep denitrification becomes an unavoidable problem of the existing coking plant,

the denitrification filter tank is mostly adopted due to site limitation in the conventional total nitrogen upgrading and reconstruction of enterprises, but a plurality of problems exist in the application process, on one hand, the amount of an externally added carbon source is large, the cost is high, and on the other hand, the risk that the COD (chemical oxygen demand) of effluent exceeds the standard due to excessive addition of the carbon source exists.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a compound denitrification filtering pond device of coking wastewater possesses advantages such as the denitrogenation is effectual, has solved the not good problem of general compound denitrification filtering pond device denitrogenation effect of coking wastewater.

(II) technical scheme

For realizing the effectual purpose of denitrogenation of this compound denitrification filtering pond device of coking wastewater, the utility model provides a following technical scheme: the utility model provides a compound denitrification filtering pond device of coking wastewater, includes the base, the bottom swing joint of base has the supporting shoe, the mounting groove has been seted up to the bottom of supporting shoe, the inner wall swing joint of mounting groove has the construction bolt, the top fixed mounting of base has the heterotrophic pond, the first overflow weir of the inner wall fixedly connected with in heterotrophic pond, the inner wall fixedly connected with second overflow weir in heterotrophic pond, the outer wall fixedly connected with recoil outlet pipe in heterotrophic pond, the inner wall in heterotrophic pond is provided with first filter material, the inner wall in heterotrophic pond is provided with the second filter material, the inner wall in heterotrophic pond is provided with the third filter material.

The bottom outer wall in heterotrophic pond is provided with recoil intake pipe that intakes, the pipe is thrown to the outer wall fixedly connected with carbon source of recoil intake pipe, the bottom outer wall in heterotrophic pond is provided with the recoil inlet tube, the bottom outer wall in heterotrophic pond is provided with the blow-down pipe, the top fixed mounting of base has the autotrophic pond, the water inlet has been seted up to the bottom outer wall in autotrophic pond, the inner wall in autotrophic pond and the inner wall in heterotrophic pond all are provided with the gas water distribution layer, the inner wall in autotrophic pond is provided with the fourth filter material, the outer wall fixedly connected with outlet pipe in autotrophic pond, the top fixed mounting of base has the buffer pool, the outer wall fixedly connected with recoil intake pipe in autotrophic pond.

Preferably, the first filter material, the second filter material and the third filter material are volcanic filter materials, the diameter of the first filter material is 2-4mm, the diameter of the second filter material is 4-6mm, and the diameter of the third filter material is 6-8 mm.

Preferably, the fourth filter material is a single autotrophic filler, and the diameter of the fourth filter material is 5-10 mm.

Preferably, one end of the mounting bolt penetrates through the inner top wall of the mounting groove and the top of the supporting block respectively and extends to the bottom of the base, and the supporting block is movably connected with the base through the mounting bolt.

Preferably, the number of the first overflow weirs is four, every two first overflow weirs are a group, the two groups of first overflow weirs are respectively fixedly connected with the inner wall of the heterotrophic pond and the inner wall of the autotrophic pond, the number of the second overflow weirs is two, and the two second overflow weirs are respectively arranged on the inner walls of the autotrophic pond and the heterotrophic pond.

Preferably, the level height of the first overflow weir arranged on the inner wall of the autotrophic pond is smaller than that of the first overflow weir arranged on the inner wall of the heterotrophic pond.

Preferably, the water inlet is arranged on the outer wall of the autotrophic pond close to one side of the heterotrophic pond.

(III) advantageous effects

Compared with the prior art, the utility model provides a compound denitrification filtering pond device of coking wastewater possesses following beneficial effect:

the method is characterized in that an external carbon source is used as an electron donor in the heterotrophic pond, the heterotrophic pond and the autotrophic pond are fully reacted by microorganisms carried by a first filter material, a second filter material and a third filter material, part of nitrate nitrogen is preliminarily degraded, the redundant carbon source can be further degraded in the buffer pond and the autotrophic pond, and the residual nitrate nitrogen is subjected to nitrate reduction reaction by sulfur autotrophic denitrifying bacteria to realize the purpose of further denitrification.

Drawings

FIG. 1 is a front sectional view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a base; 2. a support block; 3. mounting grooves; 4. installing a bolt; 5. a heterotrophic pond; 6. a first overflow weir; 7. a second overflow weir; 8. back flushing the water outlet pipe; 9. a first filter material; 10. a second filter material; 11. a third filter material; 12. a backflushing water inlet pipe; 13. a water inlet pipe is backflushed; 14. an autotrophic pond; 15. a water inlet; 16. a gas-water distribution layer; 17. an emptying pipe; 18. a fourth filter material; 19. a water outlet pipe; 20. a buffer pool; 21. a carbon source feeding pipe; 22. and (4) backflushing the air inlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a coking wastewater composite denitrification filter device comprises a base 1, wherein the bottom of the base 1 is movably connected with a supporting block 2, the bottom of the supporting block 2 is provided with a mounting groove 3, the inner wall of the mounting groove 3 is movably connected with a mounting bolt 4, the top of the base 1 is fixedly provided with a heterotrophic pond 5, the inner wall of the heterotrophic pond 5 is fixedly connected with a first overflow weir 6, the inner wall of the heterotrophic pond 5 is fixedly connected with a second overflow weir 7, the outer wall of the heterotrophic pond 5 is fixedly connected with a backflushing water outlet pipe 8, the inner wall of the heterotrophic pond 5 is provided with a first filter material 9, the inner wall of the heterotrophic pond 5 is provided with a second filter material 10, the inner wall of the heterotrophic pond 5 is provided with a third filter material 11, the first filter material 9, the second filter material 10 and the third filter material 11 are volcanic filter materials, the diameter of the first filter material 9 is 2, the diameter of the third filter material 11 is 6-8 mm.

A recoil water inlet pipe 12 is arranged on the outer wall of the bottom of the heterotrophic pond 5, a carbon source adding pipe 21 is fixedly connected to the outer wall of the recoil water inlet pipe 12, the recoil water inlet pipe 12 is used for combining wastewater and circulating water and then injecting water through the recoil water inlet pipe 12, meanwhile, gas can be introduced to ensure that the wastewater and the circulating water cannot cause backflow due to water pressure, a recoil water inlet pipe 13 is arranged on the outer wall of the bottom of the heterotrophic pond 5, an exhaust pipe 17 is arranged on the outer wall of the bottom of the heterotrophic pond 5, an autotrophic pond 14 is fixedly arranged on the top of the base 1, one end of a mounting bolt 4 respectively penetrates through the inner top wall of the mounting groove 3 and the top of the supporting block 2 and extends to the bottom of the base 1, the supporting block 2 is movably connected with the base 1 through the mounting bolt 4, a water inlet 15 is arranged on the outer wall of the bottom of the, the inner wall of the autotrophic pond 14 is provided with a fourth filter material 18, the outer wall of the autotrophic pond 14 is fixedly connected with a water outlet pipe 19, the number of the first overflow weirs 6 is four, every two first overflow weirs 6 are in a group, two groups of the first overflow weirs 6 are respectively fixedly connected with the inner wall of the heterotrophic pond 5 and the inner wall of the autotrophic pond 14, the number of the second overflow weirs 7 is two, two second overflow weirs 7 are respectively arranged on the inner walls of the autotrophic pond 14 and the heterotrophic pond 5, the horizontal height of the first overflow weir 6 arranged on the inner wall of the autotrophic pond 14 is smaller than that of the first overflow weir 6 arranged on the inner wall of the heterotrophic pond 5, a water inlet 15 is arranged on the outer wall of the autotrophic pond 14 close to one side of the heterotrophic pond 5, the fourth filter material 18 is a single autotrophic filler, the diameter of the fourth filter material 18 is 5-10mm, the heterotrophic pond 5 takes an external carbon source as an electron donor to preliminarily degrade a part of nitrate nitrogen, and the redundant carbon source can further degrade, the residual nitrate nitrogen takes first filter materials 9, second filter materials 10, third filter materials 11 and fourth filter materials 18 sulfide as electron donors, nitrate reduction reaction is carried out through sulfur autotrophic denitrifying bacteria, the aim of further denitrification is achieved, meanwhile, alkalinity generated by the heterotrophic pond 5 is fully utilized in the autotrophic pond, the sizes of the heterotrophic pond 5 and the autotrophic pond 14 are set according to specific water quality, standard-reaching requirements, investment and operation cost, the operation cost of denitrification of the whole filter pond and the risk of COD (chemical oxygen demand) exceeding of effluent are reduced, a buffer pond 20 is fixedly installed at the top of the base 1, and a recoil air inlet pipe 22 is fixedly connected to the outer wall of the autotrophic pond 14.

When the device is used, the wastewater and circulating water are mixed and then enter the heterotrophic pond 5 through the backflushing water inlet air pipe 12, the wastewater reaches the first filter material 9, the second filter material 10 and the second filter material 11 through the gas-water distribution layer 16, then overflows through the first overflow weir 6 to reach the buffer pond 20, then reaches the autotrophic pond 14 through the water inlet 15, and then reaches the first overflow weir 6 arranged in the autotrophic pond 14 through the gas-water distribution layer 16 and the fourth filter material 18 arranged in the autotrophic pond 14 and then is discharged through the water outlet pipe 19.

In conclusion, this compound denitrification filtering pond device of coking wastewater can set up the size of heterotrophic pond 5 and autotrophic pond 14 according to concrete quality of water, standard requirement, investment and running cost, reduces the running cost and the play water COD risk that exceeds standard of whole filtering pond denitrogenation.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.

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

Claims

1. The utility model provides a compound denitrification filtering pond device of coking wastewater, includes base (1), its characterized in that: the bottom of the base (1) is movably connected with a supporting block (2), the bottom of the supporting block (2) is provided with a mounting groove (3), the inner wall of the mounting groove (3) is movably connected with a mounting bolt (4), the top of the base (1) is fixedly provided with a heterotrophic pond (5), the inner wall of the heterotrophic pond (5) is fixedly connected with a first overflow weir (6), the inner wall of the heterotrophic pond (5) is fixedly connected with a second overflow weir (7), the outer wall of the heterotrophic pond (5) is fixedly connected with a backflushing water outlet pipe (8), the inner wall of the heterotrophic pond (5) is provided with a first filter material (9), the inner wall of the heterotrophic pond (5) is provided with a second filter material (10), and the inner wall of the heterotrophic pond (5) is provided with a third filter material;

a backflushing water inlet air inlet pipe (12) is arranged on the outer wall of the bottom of the heterotrophic pond (5), the outer wall of the backflushing water inlet pipe (12) is fixedly connected with a carbon source feeding pipe (21), a recoil water inlet pipe (13) is arranged on the outer wall of the bottom of the heterotrophic pond (5), an emptying pipe (17) is arranged on the outer wall of the bottom of the heterotrophic pond (5), an autotrophic pond (14) is fixedly arranged at the top of the base (1), a water inlet (15) is arranged on the outer wall of the bottom of the autotrophic pond (14), the inner walls of the autotrophic pond (14) and the heterotrophic pond (5) are both provided with a gas-water distribution layer (16), a fourth filter material (18) is arranged on the inner wall of the autotrophic pond (14), a water outlet pipe (19) is fixedly connected with the outer wall of the autotrophic pond (14), the top fixed mounting of base (1) has buffer pool (20), the outer wall fixedly connected with recoil intake pipe (22) of autotrophy pond (14).

2. The coking wastewater composite denitrification filter device according to claim 1, characterized in that: the first filter material (9), the second filter material (10) and the third filter material (11) are volcanic filter materials, the diameter of the first filter material (9) is 2-4mm, the diameter of the second filter material (10) is 4-6mm, and the diameter of the third filter material (11) is 6-8 mm.

3. The coking wastewater composite denitrification filter device according to claim 1, characterized in that: the fourth filter material (18) is a single autotrophic filler, and the diameter of the fourth filter material (18) is 5-10 mm.

4. The coking wastewater composite denitrification filter device according to claim 1, characterized in that: one end of the mounting bolt (4) penetrates through the top wall of the mounting groove (3) and the top of the supporting block (2) respectively and extends to the bottom of the base (1), and the supporting block (2) is movably connected with the base (1) through the mounting bolt (4).

5. The coking wastewater composite denitrification filter device according to claim 1, characterized in that: the quantity of first overflow weir (6) is four, and per two first overflow weirs (6) are a set of, and two sets of first overflow weirs (6) respectively with the inner wall of heterotrophic pond (5) and the inner wall fixed connection of autotrophic pond (14), the quantity of second overflow weir (7) is two, and two second overflow weirs (7) set up the inner wall in autotrophic pond (14) and heterotrophic pond (5) respectively.

6. The coking wastewater composite denitrification filter device according to claim 5, characterized in that: the horizontal height of the first overflow weir (6) arranged on the inner wall of the autotrophic pond (14) is smaller than that of the first overflow weir (6) arranged on the inner wall of the heterotrophic pond (5).

7. The coking wastewater composite denitrification filter device according to claim 1, characterized in that: the water inlet (15) is arranged on the outer wall of one side of the autotrophic pool (14) close to the heterotrophic pool (5).