CN112678967A - Modular combined artificial wetland - Google Patents
Modular combined artificial wetland Download PDFInfo
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- CN112678967A CN112678967A CN202011544632.6A CN202011544632A CN112678967A CN 112678967 A CN112678967 A CN 112678967A CN 202011544632 A CN202011544632 A CN 202011544632A CN 112678967 A CN112678967 A CN 112678967A
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- wetland
- water distribution
- distribution channel
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- block
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000010865 sewage Substances 0.000 claims abstract description 23
- 239000000945 filler Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000005273 aeration Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000033116 oxidation-reduction process Effects 0.000 claims description 3
- 238000000053 physical method Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 10
- 230000009471 action Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 241000255925 Diptera Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention belongs to the technical field of sewage treatment or river ecological restoration, and particularly relates to a modular combined artificial wetland. The wetland comprises a plurality of wetland blocks, wherein the wetland blocks are connected in series through water distribution channels, each water distribution channel is connected with a main water distribution channel through a gate valve, and a perforated wall is arranged at the joint of each water distribution channel and the wetland block. Sewage enters the first water distribution channel through the main water distribution channel after being pretreated and is uniformly distributed to the first wetland blocks, is collected by the second water distribution channel after being treated, is uniformly distributed to the second wetland blocks, and the like until being treated by the fourth wetland blocks and then is collected by the fifth water distribution channel and then is discharged. Under the same artificial wetland area, the maintenance cost is saved by more than 70 percent compared with the original artificial wetland after the artificial wetland is divided into four same modules for combination, and the short flow phenomenon is obviously reduced due to the multiple water distribution.
Description
Technical Field
The invention belongs to the technical field of sewage treatment or river ecological restoration, and particularly relates to a modular combined artificial wetland.
Background
The artificial wetland is a semi-ecological sewage treatment system formed by artificial design and modification, and mainly comprises three parts, namely soil matrix, aquatic plants and microorganisms. The artificial wetland can be divided into a surface flow artificial wetland and an undercurrent artificial wetland according to the water level state in the artificial wetland, and the undercurrent wetland can be divided into a horizontal undercurrent artificial wetland and a vertical undercurrent artificial wetland according to the water flow direction. The surface flow constructed wetland treatment system has the advantages of low investment and operation cost, simple construction, operation and maintenance, large occupied area, easy freezing of the surface flow constructed wetland in winter, easy breeding of mosquitoes in summer and odorous. The subsurface flow constructed wetland has the advantages of small floor area, good sanitary condition, less influence of air temperature, higher construction cost and easy blockage.
The horizontal subsurface flow constructed wetland treats sewage through the combined action of microorganisms and plants on the filler. Along with the extension of time, the suspended solid in the sewage is filtered and intercepted by the filler on the one hand, and microorganism on the filler breeds in a large number on the other hand, and both combined actions cause the jam, have influenced sewage treatment effect, in addition because filler loading is inhomogeneous, in the operation process, form the rivers short-term flow phenomenon easily (rivers concentrate and overflow through the less passageway of resistance promptly). Most of the conventional artificial wetlands are integrally constructed, the positions of blockage are difficult to judge and search after soil matrixes are covered on the surfaces of the artificial wetlands, the problem of blockage is solved, all fillers can be only refilled, the cost is high, and sewage cannot be treated during maintenance.
Disclosure of Invention
The invention provides a novel modularized combined artificial wetland for solving the problems.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a modular combined artificial wetland comprises a plurality of wetland blocks, wherein the wetland blocks are connected in series through water distribution channels, each water distribution channel is connected with a main water distribution channel through a gate valve, and a perforated wall is arranged at the joint of the water distribution channel and the wetland blocks.
A gate valve is arranged at the downstream of each water distribution channel connector in the main water distribution channel to separate the main water distribution channel, and each gate valve is in a closed state at ordinary times.
Sewage enters the first water distribution channel through the main water distribution channel after being pretreated and is uniformly distributed to the first wetland blocks, is collected by the second water distribution channel after being treated, is uniformly distributed to the second wetland blocks, and the like until being treated by the fourth wetland blocks and then is collected by the fifth water distribution channel and then is discharged.
The water outlet condition of the wetland blocks is used for judging the blockage and water flow uniformity of each wetland block, when one wetland block goes wrong, gate valves of an upstream and downstream water distribution channel and a main water distribution channel are opened, and the water inlet and outlet holes of the wetland block which goes wrong are plugged, so that sewage surpasses the wetland block, directly enters the next-stage wetland block for treatment, and the normal operation is recovered after the filler is refilled into the wetland block which goes wrong.
The pretreatment mode is a physical method of grating, sedimentation, regulation and filtration, or an activated sludge method, a biological membrane method biological treatment, or an oxidation-reduction chemical treatment, or a combination of the treatment modes.
The number of the wetland blocks is more than or equal to 2.
The wetland block is rectangular, pentagonal or hexagonal.
The wetland blocks can be operated in series, in parallel or in a combination of series and parallel.
The sewage can only enter from the first water distribution channel, and can also enter from other or a plurality of water distribution channels simultaneously and then exit from the water distribution channels at two sides.
Aeration facilities are added in each water distribution channel.
The beneficial effects obtained by the invention are as follows:
compared with the existing horizontal subsurface flow constructed wetland, the invention can rapidly discover the phenomena of blockage and short flow in each module by observing the water outlet conditions of the water outlet holes of all levels of constructed wetland modules, and then overtake the problematic constructed wetland modules by scheduling the gate valves, thereby maintaining the treatment of sewage while maintaining the constructed wetland. In addition, each maintenance only needs to be carried out on the module with the problem, the whole constructed wetland does not need to be repaired, the maintenance cost is greatly reduced, and the economical efficiency of the operation of the constructed wetland is improved.
The test result shows that after the artificial wetland is divided into four same modules and combined under the same artificial wetland area, compared with the original artificial wetland, the maintenance cost is saved by more than 70 percent, and the short flow phenomenon is obviously reduced due to the action of multiple water distribution.
Drawings
FIG. 1 is a schematic view of a modular combined artificial wetland;
in the figure: 1-a perforated wall; 2-distributing the canal; 3-wetland plots; 4-gate valve.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
The invention provides a modular combined artificial wetland, aiming at the problems of easy blockage, short flow, inconvenient maintenance and the like of a horizontal subsurface flow artificial wetland. The original integral constructed wetland is divided into a plurality of wetland blocks 3, the wetland blocks 3 are connected in series through water distribution channels 2, each water distribution channel 2 is connected with a main water distribution channel through a gate valve 4, a gate valve 4 is arranged at the downstream of each water distribution channel joint in the main water distribution channel to separate the main water distribution channel, and each gate valve 4 is in a closed state at ordinary times. The joint of the water distribution channel 2 and the wetland block 3 is provided with a perforated wall 1 to ensure even water distribution.
Sewage enters the first water distribution channel through the main water distribution channel after being pretreated (subjected to grating, sedimentation, regulation and the like) and is uniformly distributed to the first wetland block, is collected by the second water distribution channel after being treated, is uniformly distributed to the second wetland block, and is analogized in turn until being treated by the fourth wetland block and then is collected by the fifth water distribution channel and then is discharged. The blockage and the water flow uniformity of each wetland block can be judged according to the water outlet condition of the water outlet holes of the artificial wetland, when one wetland block has a problem, the gate valves 4 of the upstream and downstream water distribution channels and the main water distribution channel are opened, and the water inlet and outlet holes of the wetland block with the problem are blocked, so that sewage surpasses the wetland block and directly enters the next-stage wetland block for treatment. And after the wetland blocks with problems are refilled with the filler, the normal operation is recovered.
The pretreatment mode can be a physical method such as grating, sedimentation, regulation, filtration and the like, biological treatment such as an activated sludge method, a biofilm method and the like, chemical treatment such as oxidation reduction and the like, or a combination of the above treatment modes;
the number of the wetland blocks can be 2 or more, and the more the number is, the lower the maintenance cost is, but the higher the manufacturing cost is;
the wetland blocks can be operated in series, in parallel or in a combination of series and parallel;
the wetland block can be rectangular, and can also be polygonal such as pentagonal, hexagonal and the like.
The sewage can only enter from the first water distribution channel, and can also enter from other or a plurality of water distribution channels simultaneously and then exit from the water distribution channels at two sides.
In each water distribution channel, aeration facilities can be added to improve the content of dissolved oxygen in sewage and improve the sewage treatment effect.
Collected rural domestic sewage (without flushing water) is firstly filtered by a screen and then enters a regulating sedimentation tank for treatment, the treated effluent enters a horizontal subsurface flow constructed wetland for treatment, and the treatment scale is 20m3And d. The total area of the constructed wetland is 40m2The number of the modules is 4, and each module is 5m by 2 m. The total retention time of the sewage in the artificial wetland is 2d, and the effluent can reach the first-grade A standard of GB 18918-2002.
The invention provides a modular combined artificial wetland, aiming at the problems of easy blockage, short flow, inconvenient maintenance and the like of a horizontal subsurface flow artificial wetland. The artificial wetland is divided into a plurality of modules which are connected in series through water distribution channels, each water distribution channel is connected with a main water distribution channel through a valve gate, and a gate valve is arranged at the downstream of each water distribution channel joint in the main water distribution channel to separate the main water distribution channel. Through gate valve scheduling, surmount the constructed wetland module that has the problem to can keep the processing to sewage when maintaining the constructed wetland, and show reduction cost of maintenance, thereby improved the constructed wetland.
Claims (10)
1. The modularized combined artificial wetland is characterized in that: the wetland comprises a plurality of wetland blocks, wherein the wetland blocks are connected in series through water distribution channels, each water distribution channel is connected with a main water distribution channel through a gate valve, and a perforated wall is arranged at the joint of each water distribution channel and the wetland block.
2. The modular combined artificial wetland according to claim 1, wherein: a gate valve is arranged at the downstream of each water distribution channel connector in the main water distribution channel to separate the main water distribution channel, and each gate valve is in a closed state at ordinary times.
3. The modular combined artificial wetland according to claim 1, wherein: sewage enters the first water distribution channel through the main water distribution channel after being pretreated and is uniformly distributed to the first wetland blocks, is collected by the second water distribution channel after being treated, is uniformly distributed to the second wetland blocks, and the like until being treated by the fourth wetland blocks and then is collected by the fifth water distribution channel and then is discharged.
4. The modular combined artificial wetland according to claim 3, wherein: the water outlet condition of the wetland blocks is used for judging the blockage and water flow uniformity of each wetland block, when one wetland block goes wrong, gate valves of an upstream and downstream water distribution channel and a main water distribution channel are opened, and the water inlet and outlet holes of the wetland block which goes wrong are plugged, so that sewage surpasses the wetland block, directly enters the next-stage wetland block for treatment, and the normal operation is recovered after the filler is refilled into the wetland block which goes wrong.
5. The modular combined artificial wetland according to claim 3, wherein: the pretreatment mode is a physical method of grating, sedimentation, regulation and filtration, or an activated sludge method, a biological membrane method biological treatment, or an oxidation-reduction chemical treatment, or a combination of the treatment modes.
6. The modular combined artificial wetland according to claim 1, wherein: the number of the wetland blocks is more than or equal to 2.
7. The modular combined artificial wetland according to claim 1, wherein: the wetland block is rectangular, pentagonal or hexagonal.
8. The modular combined artificial wetland according to claim 1, wherein: the wetland blocks can be operated in series, in parallel or in a combination of series and parallel.
9. The modular combined artificial wetland according to claim 1, wherein: the sewage can only enter from the first water distribution channel, and can also enter from other or a plurality of water distribution channels simultaneously and then exit from the water distribution channels at two sides.
10. The modular combined artificial wetland according to claim 1, wherein: aeration facilities are added in each water distribution channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544632.6A CN112678967A (en) | 2020-12-23 | 2020-12-23 | Modular combined artificial wetland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544632.6A CN112678967A (en) | 2020-12-23 | 2020-12-23 | Modular combined artificial wetland |
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| Publication Number | Publication Date |
|---|---|
| CN112678967A true CN112678967A (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202011544632.6A Pending CN112678967A (en) | 2020-12-23 | 2020-12-23 | Modular combined artificial wetland |
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| CN (1) | CN112678967A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120091057A1 (en) * | 2011-08-22 | 2012-04-19 | Kent Greg B | Wetland Biofilter Chamber with Peripheral Catch Basin and Method of Use Thereof |
| CN105540865A (en) * | 2016-03-07 | 2016-05-04 | 北京金泽环境能源技术研究有限公司 | River water treatment system |
| CN205398238U (en) * | 2016-03-09 | 2016-07-27 | 武汉大学 | Handle ecological testing system of agricultural drain quality of water |
| CN208279380U (en) * | 2018-04-16 | 2018-12-25 | 九江赛恩斯环保科技发展有限公司 | A kind of adjustable type artificial wet land system |
| CN211946475U (en) * | 2020-01-21 | 2020-11-17 | 中国电建集团华东勘测设计研究院有限公司 | Subsurface flow constructed wetland system capable of being switched in series-parallel connection |
-
2020
- 2020-12-23 CN CN202011544632.6A patent/CN112678967A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120091057A1 (en) * | 2011-08-22 | 2012-04-19 | Kent Greg B | Wetland Biofilter Chamber with Peripheral Catch Basin and Method of Use Thereof |
| CN105540865A (en) * | 2016-03-07 | 2016-05-04 | 北京金泽环境能源技术研究有限公司 | River water treatment system |
| CN205398238U (en) * | 2016-03-09 | 2016-07-27 | 武汉大学 | Handle ecological testing system of agricultural drain quality of water |
| CN208279380U (en) * | 2018-04-16 | 2018-12-25 | 九江赛恩斯环保科技发展有限公司 | A kind of adjustable type artificial wet land system |
| CN211946475U (en) * | 2020-01-21 | 2020-11-17 | 中国电建集团华东勘测设计研究院有限公司 | Subsurface flow constructed wetland system capable of being switched in series-parallel connection |
Non-Patent Citations (1)
| Title |
|---|
| 叶林顺: "《水污染控制工程》", 31 October 2018, 暨南大学出版社 * |
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Application publication date: 20210420 |