CN219823861U - Sandwich type biological trickle bed device - Google Patents
Sandwich type biological trickle bed device Download PDFInfo
- Publication number
- CN219823861U CN219823861U CN202320814911.2U CN202320814911U CN219823861U CN 219823861 U CN219823861 U CN 219823861U CN 202320814911 U CN202320814911 U CN 202320814911U CN 219823861 U CN219823861 U CN 219823861U
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- CN
- China
- Prior art keywords
- trickle bed
- bed body
- sandwich
- biological
- aeration
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- 238000000926 separation method Methods 0.000 claims abstract description 12
- 238000005273 aeration Methods 0.000 claims description 36
- 238000012856 packing Methods 0.000 claims description 18
- 239000002893 slag Substances 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000011381 foam concrete Substances 0.000 claims description 9
- 241001465754 Metazoa Species 0.000 claims description 6
- 241000272814 Anser sp. Species 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 2
- 239000000149 chemical water pollutant Substances 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000008901 benefit Effects 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 239000010813 municipal solid waste Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 230000007281 self degradation Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model provides a sandwich type biological trickle bed device which comprises a trickle bed body, wherein a plurality of filling units are sequentially stacked from top to bottom in the trickle bed body, a separation net is arranged between every two adjacent filling units, each filling unit is arranged in a sandwich type, a cobble unit is arranged at the inner bottom end of the trickle bed body, and the filling units and the cobble units are separated through the separation net. The utility model aims to solve the problems of low treatment efficiency, high cost and unstable biological treatment system of landfill leachate in the prior art.
Description
Technical Field
The utility model relates to the technical field of leachate treatment, in particular to a sandwich type biological trickle bed device.
Background
The domestic garbage leachate is secondary pollution generated after urban domestic garbage is sanitary and buried, has the characteristics of various pollutants, large water quantity, large water quality fluctuation and no periodical change, directly or indirectly pollutes water under the actions of atmosphere, precipitation, garbage self degradation and the like, and greatly influences the utilization of natural water by people. In order to protect natural environment, the normal production and life of people are practically ensured, and the effective treatment of landfill leachate is a critical task.
For the traditional percolate treatment process taking biological treatment as a core, the total nitrogen accumulated for a long time can influence the treatment efficiency of the system, and the difficulty in removing the total nitrogen is always a difficult problem in engineering application. With the application of membrane technologies such as nanofiltration and reverse osmosis, leachate in domestic landfill sites gradually adopts a mode of combining biological treatment and membrane advanced treatment, and the problem that total nitrogen in effluent of high-concentration ammonia nitrogen leachate reaches the standard can be solved. However, the operation and maintenance replacement costs of the membrane technology are high, the denitrification process has the problems of high energy consumption and high investment, and the solution of the high cost is an important breakthrough point of the application of the membrane technology at present. Meanwhile, the mechanism of the membrane technology for realizing the treatment of the percolate is separation rather than degradation of pollutants and the percolate, the reduction of the percolate is realized essentially, and the problems of low water yield, difficult treatment of the concentrated solution and the like are also the difficulties in the technology of a percolate membrane. Compared with other biological treatment modes, the biological reaction bed is paid attention to because of the advantages of large biomass, strong impact resistance, small mud production and the like. However, the traditional landfill leachate treatment efficiency is low, the cost is high, and the biological treatment system is unstable.
In view of this, the present utility model has been made.
Disclosure of Invention
In view of the above, the utility model provides a sandwich biological trickle bed device, which aims to solve the current situations of low treatment efficiency, high cost and unstable biological treatment system of landfill leachate in the prior art. The sandwich biological trickle bed device has simple process and low cost, can efficiently utilize the characteristics of solid waste and internal nutrition components, and has higher economic and social environmental benefits.
The utility model provides a sandwich type biological trickle bed device which comprises a trickle bed body, wherein a plurality of filling units are sequentially stacked from top to bottom in the trickle bed body, a separation net is arranged between every two adjacent filling units, each filling unit is arranged in a sandwich type, a cobble unit is arranged at the inner bottom end of the trickle bed body, and the filling units and the cobble units are separated through the separation net. Preferably, the number of the packing units may be 3 to 4.
The filling units are sequentially stacked to form a sandwich filling mode, and the separation net is arranged between the adjacent filling units, so that short flow of percolate treatment process caused by too dense filling in the whole day after degradation and damage of waste fabrics can be avoided; the cobble unit is arranged at the bottom end of the trickle bed body, cobbles are used as bases, and mineralized garbage is placed to flow out along with water flow to cause loss.
Further, the inside of the filler unit is provided with a slag zone, an animal aggregate zone, a foam concrete zone and a waste fabric zone from top to bottom in sequence, and the height ratio of each zone is (4-6): (2-2): (1-1): (1-1). By arranging the slag area, the functions of adsorption and microbial film formation can be achieved through slag; by arranging the animal aggregate area, the total phosphorus in the wastewater and the hanging film in the sanitary area can be removed; by arranging the foam concrete area, the effect of adsorbing and intercepting pollutants can be achieved; by arranging the waste fabric area, the waste fabric in the waste fabric area can play roles of slow release of carbon sources and filtration of large particles. The height proportion of each area is designed according to the difficulty of acquiring materials and the effect, and better treatment efficiency can be achieved by setting the specific height proportion of each area.
Specifically, the slag is the incineration slag generated by a household garbage incineration plant, has the advantages of more gaps, good adsorption effect, low price and easy obtainment, and the obtained slag is directly used and operated without pretreatment.
Further, an aeration pipe is further arranged in the trickle bed body, the aeration pipe is parallel to the inner wall of the trickle bed body, and the length of the aeration pipe is matched with the height of the trickle bed body.
Further, the center of the aerator pipe coincides with the center of the trickle bed body, and the inner diameter of the trickle pipe is smaller than the inner diameter of the trickle bed body.
Further, a plurality of aeration holes are arranged on the pipe wall of the aeration pipe.
Further, a protection tube is sleeved outside the aeration tube, a gap exists between the protection tube and the aeration tube, and goose soft stones are filled in the gap. The goose soft stone is arranged in the protection pipe, so that the whole trickle bed device can be prevented from being in an anaerobic state due to the blocking of the aeration holes by slag, foam concrete, waste fabrics and the like.
Further, a plurality of empty holes are formed in the wall of the protection tube, and the aperture of each empty hole is larger than that of the aeration hole.
Further, the trickle bed body further comprises a feeding port and a discharging port, wherein the feeding port is arranged at the top end of the trickle bed body, and the discharging port is arranged at the bottom end of the trickle bed body.
Further, a gap space is formed between the packing unit and the top end inside the trickle bed body, and the gap space is 1/3 of the volume of the packing unit.
Compared with the prior art, the utility model has the beneficial effects that: according to the sandwich type biological trickle bed device, the COD removal rate can be improved through the sandwich type filling unit arrangement mode; meanwhile, under the sandwich filling mode, the removal rate of total phosphorus and total nitrogen can be improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a sandwich-type biological trickle bed device according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of the internal structure of a trickle bed for living beings according to an embodiment of the present utility model.
Reference numerals:
1-trickle bed body; 2-a filler unit;
201-a slag zone; 202-animal aggregate area;
203-a foam concrete zone; 204-waste fabric area;
3-a screen; 4-cobble units;
5-aeration pipe; 501-aeration holes;
6-protecting tube; 601-holes;
7-void; 8-gap space;
9-a feed inlet; 10-a discharge hole.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Examples
Referring to fig. 1-2, referring to fig. 1, the sandwich biological trickle bed device according to the embodiment of the utility model comprises a trickle bed body 1, wherein the trickle bed body 1 comprises a plurality of packing units 2 stacked in sequence from top to bottom, a separation net 3 is arranged between every two adjacent packing units 2, the size of each packing unit 2 is equal, the internal structure is the same, and preferably, the number of the packing units 2 can be three to four; the cobble unit 4 is arranged at the bottom end inside the trickle bed body 1, and the packing unit 2 and the cobble unit 4 are separated by the separation net 3. A gap space 8 is formed between the packing unit 2 and the top end inside the trickle bed body 1, and the gap space 8 is 1/3 of the volume of the packing unit 2. Preferably, the trickle bed body 1 further comprises a feed inlet 9 and a discharge outlet 10, wherein the feed inlet 9 is arranged at the top end of the trickle bed body 1, and the discharge outlet 10 is arranged at the bottom end of the trickle bed body 1.
Preferably, the filler unit 2 comprises a slag zone 201, an animal aggregate zone 202, a foam concrete removing and waste fabric zone 204 which are sequentially arranged from top to bottom, wherein the height ratio of each zone is (4-6): (2-2): (1-1): (1-1).
Referring to fig. 2, an aeration pipe 5 is further disposed inside the trickle bed body 1, the aeration pipe 5 is parallel to the inner wall of the trickle bed body 1, and the length of the aeration pipe 5 is adapted to the height of the trickle bed body 1; a plurality of aeration holes 501 are arranged on the pipe wall of the aeration pipe 5. The aeration pipe 5 overcoat is equipped with protection pipe 6, exists space 7 between protection pipe 6 and the aeration pipe 5, and the space 7 intussuseption is filled with goose soft stone, is provided with a plurality of holes 601 on the protection pipe 6 wall of protection pipe 6, and the aperture of hole 601 is greater than the aperture of aeration hole 501. Preferably, the aperture of the empty holes 601 is 3 times the aperture of the aeration holes 501.
The whole working flow of the sandwich biological trickle bed device in practical application is as follows:
the cylindrical biological reaction column with the height of 1m and the diameter of 0.15m is designed, as the trickle bed body 1 of the utility model, the inside of the cylindrical biological reaction column comprises sandwich type packing units 2, a plurality of packing units 2 are sequentially stacked from top to bottom, a slag area 201, an animal aggregate area 202, a foam concrete area 203 and a waste fabric area 204 are sequentially arranged in the packing units 2 from top to bottom, the volume ratio of each area is respectively 50%, 25%, 12.5% and 12.5%, and the whole reaction bed is divided into 3 packing units 2. A separation net 3, preferably a steel wire separation net 3, is arranged between each packing unit 2; the bottom of the trickle bed body 1 takes a cobble unit 4 as a substrate to prevent mineralized garbage from flowing out along with water flow to cause loss. An aeration pipe 5 with an inner diameter of 1cm is arranged in the trickle bed, and the wall of the aeration pipe 5 is provided with an aeration hole 501 with a diameter of 1 cm. The aeration pipe 5 is sleeved with a protection pipe 6 with the inner diameter of 6cm, and the wall of the protection pipe 6 is provided with a hollow hole 601 with the diameter of 3 cm. The goose soft stone is filled between the protection pipe 6 and the aeration pipe 5 to prevent slag, foam concrete, waste fabrics and the like from blocking the aeration holes 501 and making the whole reactor in an anaerobic state.
Compared with the traditional trickle bed device, the sandwich type biological trickle bed device provided by the utility model has the advantages that the trickle bed device is prepared by fully mixing slag, animal aggregate, foam concrete and waste fabric which are in the same volume ratio in the trickle bed body 1 as the trickle bed of the filler, and compared with the sandwich type filling mode, the COD removal rate of the sandwich type biological trickle bed device is improved by 5%, so that the staged alternating effect of the sandwich type filler is superior to the superposition effect of the traditional mixed filler on organic matter removal. Meanwhile, in the sandwich filling mode, the removal rate of 90% and 80% of total phosphorus and total nitrogen are maintained.
Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will be within the scope of the present utility model.
The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the utility model; various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. The sandwich type biological trickle bed device is characterized by comprising a trickle bed body, wherein a plurality of filler units are sequentially stacked from top to bottom in the trickle bed body, a separation net is arranged between every two adjacent filler units, each filler unit is in sandwich type, a cobble unit is arranged at the inner bottom end of the trickle bed body, and the filler units are separated from the cobble units through the separation net.
2. The sandwich biological trickle bed device according to claim 1, wherein the packing unit comprises a slag area, an animal aggregate area, a foam concrete area and a waste fabric area which are sequentially arranged from top to bottom, and the height ratio of each area is (4-6): 2:1:1.
3. the sandwich biological trickle bed device according to claim 1, characterized in that an aeration pipe is further arranged inside the trickle bed body, the aeration pipe is parallel to the inner wall of the trickle bed body, and the length of the aeration pipe is adapted to the height of the trickle bed body.
4. A sandwich biological trickle bed device according to claim 3, characterised in that the centre of the aeration tube coincides with the centre of the trickle bed body, the inner diameter of the aeration tube being smaller than the inner diameter of the trickle bed body.
5. A sandwich biological trickle bed apparatus according to claim 3, characterised in that a plurality of aeration holes are provided in the wall of the aeration tube.
6. The sandwich biological trickle bed device of claim 5, wherein the aeration tube is sleeved with a protective tube, a gap exists between the protective tube and the aeration tube, and goose soft stones are filled in the gap.
7. The sandwich biological trickle bed device of claim 6, wherein a plurality of voids are provided on the protection tube wall of the protection tube, and the pore diameter of the voids is larger than the pore diameter of the aeration holes.
8. The sandwiched biological trickle bed device of claim 1, wherein the trickle bed body further comprises a feed port and a discharge port, the feed port is disposed at the top end of the trickle bed body, and the discharge port is disposed at the bottom end of the trickle bed body.
9. The sandwich biological trickle bed device of claim 1, wherein a gap space exists between the packing unit and the inner top end of the trickle bed body, and the gap space is 1/3 of the volume of the packing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320814911.2U CN219823861U (en) | 2023-04-12 | 2023-04-12 | Sandwich type biological trickle bed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320814911.2U CN219823861U (en) | 2023-04-12 | 2023-04-12 | Sandwich type biological trickle bed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219823861U true CN219823861U (en) | 2023-10-13 |
Family
ID=88275550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320814911.2U Active CN219823861U (en) | 2023-04-12 | 2023-04-12 | Sandwich type biological trickle bed device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219823861U (en) |
-
2023
- 2023-04-12 CN CN202320814911.2U patent/CN219823861U/en active Active
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