CN212610145U - Constructed wetland sewage toxicity emission reduction system - Google Patents
Constructed wetland sewage toxicity emission reduction system Download PDFInfo
- Publication number
- CN212610145U CN212610145U CN202021179201.XU CN202021179201U CN212610145U CN 212610145 U CN212610145 U CN 212610145U CN 202021179201 U CN202021179201 U CN 202021179201U CN 212610145 U CN212610145 U CN 212610145U
- Authority
- CN
- China
- Prior art keywords
- water
- wetland sewage
- constructed wetland
- emission reduction
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001988 toxicity Effects 0.000 title claims abstract description 18
- 231100000419 toxicity Toxicity 0.000 title claims abstract description 18
- 239000010865 sewage Substances 0.000 title claims abstract description 16
- 230000009467 reduction Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000011435 rock Substances 0.000 claims abstract description 8
- 238000004062 sedimentation Methods 0.000 claims description 17
- 239000002689 soil Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000011028 pyrite Substances 0.000 abstract description 2
- 229910052683 pyrite Inorganic materials 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 238000011066 ex-situ storage Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 description 25
- 241000196324 Embryophyta Species 0.000 description 14
- 238000005070 sampling Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 8
- 238000006722 reduction reaction Methods 0.000 description 7
- 238000000746 purification Methods 0.000 description 6
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 244000207740 Lemna minor Species 0.000 description 3
- 235000006439 Lemna minor Nutrition 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 235000001855 Portulaca oleracea Nutrition 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 241000209490 Nymphaea Species 0.000 description 2
- 235000016791 Nymphaea odorata subsp odorata Nutrition 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001113556 Elodea Species 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 241000543445 Vallisneria spiralis Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000031877 prophase Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses an artificial wetland sewage toxicity reduces discharging system belongs to the sewage treatment system field. The river water is subjected to ex-situ treatment through the multi-stage wetland, so that the aerobic reaction can be performed in a project area when the water quantity is large, and the anaerobic reaction can be performed in a project area when the water quantity is small. Meanwhile, the effect of synchronous nitrification and denitrification is achieved by the combination of different types of artificial wetlands among different levels of wetlands. And finally, carrying out ecological restoration and treatment through a filter material combining pyrite and volcanic rock, and removing heavy metals in river water to achieve the aim of toxicity emission reduction. The utility model discloses an artificial wetland sewage toxicity reduces discharging system reaches 80-90% to the nitre state nitrogen clearance, can reach the clearance to other pollutants: 40% of total phosphorus, 50% of total nitrogen and 50% of heavy metal.
Description
Technical Field
The utility model belongs to the sewage treatment system field, concretely relates to multistage constructed wetland carries out toxicity emission reduction to river. Can be applied to river ecological restoration and tail water treatment of sewage treatment plants in chemical industrial parks.
Background
Compared with the traditional heavy metal wastewater treatment method, the constructed wetland wastewater toxicity reduction system comprehensively utilizes physical, chemical and biological action systems in the wetland system to purify wastewater, and has the advantages of high purification efficiency, simplicity in operation, low energy consumption, low treatment cost and the like.
However, if the engineering design of the artificial wetland system is unreasonable, particularly if plants are selected and the substrate is configured unreasonably, the problems of low pollutant removal rate, short service life and the like exist.
Therefore, it is necessary to research plants and substrates of the artificial wetland, and a multistage artificial wetland model is combined from the selection and configuration of the plants and the substrates, so as to obtain an artificial wetland river water toxicity emission reduction system and method.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an artificial wetland purification system and method capable of reducing toxicity and emission (reducing the content of heavy metals in river water).
In order to solve the technical problem, the utility model provides a following technical scheme:
the system for reducing the toxicity of the sewage of the artificial wetland comprises four sedimentation areas, and the height of each sedimentation area is as follows: the water distribution device comprises a first precipitation area, a second precipitation area, a third precipitation area and a fourth precipitation area, wherein a water distribution channel is arranged in the first precipitation area, a water inlet is formed in the top end of the water distribution channel, an overflow weir is arranged above the first precipitation area, and a water outlet is formed in the top of the fourth precipitation area.
The utility model discloses among the technical scheme: the middle lower part of the first settling zone is provided with a soil layer, and the upper part is a water layer.
The utility model discloses among the technical scheme: the middle lower part of the second settling zone is provided with a soil layer, and the upper part is a water layer.
The utility model discloses among the technical scheme: the middle lower part of the third settling zone is provided with a gravel soil layer, and the upper part is a water layer.
The utility model discloses among the technical scheme: and a pyrite-volcanic rock filler is arranged at the middle lower part of the fourth settling zone.
The utility model discloses among the technical scheme: planting reed and duckweed in the water layer of the first precipitate at density of 5-10 plants/m2The water layer of the second settling zone is planted with herba Swertiae Dilutae and flos Nymphaeae at a planting density of 10-20 plants/m2The gravel soil layer of the third settling zone is formed by filling gravel and soil, and the water layer on the upper part is planted with aquatic weeds; and the pyrite-volcanic rock filler in the fourth precipitation zone is prepared from pyrite, limestone particles and volcanic rock according to the volume ratio of 1: 1: 1, mixing, wherein the particle size of the modified pyrite is 2-5mm, the particle size of limestone is 1-2mm, the particle size of volcanic rock is 3-5mm, and the bed layer void ratio is about 30%.
The utility model discloses among the technical scheme: river water is treated through the multistage wetland, and the water body can obtain effective falling aeration in the falling process, and the wetland contains different wetland types in the design and can degrade pollutants of different types. The floating-leaf plant area can effectively intercept suspended matters, meanwhile, the water body is also in a facultative state, oxidation-reduction reaction can be carried out, and the residues of the plant body can provide a certain carbon source for the water body. The submerged plant area can carry out photosynthetic oxygen enrichment on the water body, the ammonia nitrogen is converted into nitrate nitrogen, the water body passes through the bottom of the horizontal subsurface flow wetland under the condition of small water quantity, the anaerobic reaction can be carried out, and when the water quantity is large, most of the water body passes through the surface of the gravel, so that the oxygen content of the water body can be increased, and the nitration reaction can be carried out.
The artificial wetland has both water storage and water purification functions. When river water flows through the wetland facility, particles can be removed through physical precipitation, and soluble pollutants in runoff can be intercepted and absorbed through the infiltration, filtration and adsorption of soil and fillers and the interception of plants.
Compared with the prior art, the utility model has the advantages that:
(1) the system not only achieves 80-90% of nitrate nitrogen removal rate, 40% of total phosphorus removal rate, 50% of total nitrogen removal rate and 50% of heavy metal removal rate according to conventional indexes.
(2) The artificial wetland is used for treating the river water in an ectopic mode, the pollutant load borne by the river water can be relieved, and the self-purification capacity of the river water is improved.
(3) The method has low engineering construction cost, the construction cost only relates to earthwork excavation cost, concrete floating cost, filler cost and plant planting cost, and the required construction cost can be predicted.
(4) In the long term, after the river heterotopic ecological purification technology is implemented, the pollutant content in river water can be greatly reduced, the water quality of the river water is improved, the ecological environment around the river channel is improved, the life quality of residents around the river channel is improved, the morbidity of the residents around the river channel is reduced, and the ecological purification technology has extremely high economic benefit.
Drawings
FIG. 1 is a schematic structural view of the constructed wetland sewage toxicity emission reduction system of the utility model.
Wherein 1 is a first precipitation zone, 2 is a second precipitation zone, 3 is a third precipitation zone, 4 is a fourth precipitation zone, 5 is reed, 6 is duckweed, 7 is bitter grass, 8 is water lily, 9 is gravel, 10 is waterweed, 11 is pyrite-volcanic rock filler, 12 is a water distribution channel, 13 is a water inlet, 14 is an overflow weir, and 15 is a water outlet.
Detailed Description
The present invention will be further explained with reference to the following embodiments, but the scope of the present invention is not limited thereto:
as shown in fig. 1, the constructed wetland sewage toxicity emission reduction system sequentially comprises a first precipitation zone 1, a second precipitation zone 2, a third precipitation zone 3 and a fourth precipitation zone 4 along the water flow direction. The sedimentation device comprises a first sedimentation region 1, a second sedimentation region 2, a third sedimentation region 3 and a fourth sedimentation region 4, wherein a water distribution channel 12 is arranged in the first sedimentation region 1, a water inlet 13 is formed in the top end of the water distribution channel 12, an overflow weir 14 is arranged above the first sedimentation region 1, and a water outlet 15 is formed in the top of the fourth sedimentation region 4.
In the first precipitation zone 1The lower part is provided with a soil layer, the upper part is a water layer, and the water layer is planted with reed and duckweed with planting density of 5-10 plants/m2；
The middle lower part of the second settling zone 2 is provided with a soil layer, the upper part is a water layer, the water layer is planted with tape grass and water lily, the planting density is 10-20 plants/m2。
The middle lower part of the third settling zone 3 is provided with a gravel soil layer 9, and the water layer at the upper part is planted with aquatic weeds.
And a pyrite-volcanic rock filler is arranged at the middle lower part of the fourth settling zone 4.
Example 1
The front end of the constructed wetland sewage toxicity emission reduction system is provided with a water distribution channel 12 and an overflow weir 14, a water inlet 13 is positioned at the top end of the water distribution channel 12, water enters a first precipitation zone 1 from the overflow weir, the first precipitation zone 1 enters a second precipitation zone 2 through water drop, the second precipitation zone 2 enters a third precipitation zone 3 through water drop, the third precipitation zone 3 enters a fourth precipitation zone 4 through water drop, and finally the water is discharged through a water outlet 15. The oxygen content of the water body is enlarged through multi-stage water drop, and meanwhile, the effect of synchronous nitrification and denitrification is achieved through the combination of different types of artificial wetlands among different stages of wetlands.
The lab lays 16 monitoring points in the engineering area for sampling, and each point has 3 repeated samples. After the implementation is finished, respectively performing 5 maintenance engineering prophase; spring and 7 maintenance project middle period; the later period of the maintenance project in summer and 9 months; sampling is carried out in autumn. The physicochemical indexes of the required water body of each water sample are determined, and the field collection and the laboratory analysis refer to the water and wastewater monitoring and analyzing method.
The content of nitrate nitrogen at the sampling points from No. 1 to No. 3 of the river channel is 4.01-6.72 mg/L at the initial stage of the maintenance engineering, is more than 1.31-2.30 mg/L at the middle stage of the maintenance engineering, is more than 0.13-0.88 mg/L at the later stage of the maintenance engineering, and shows a decreasing trend. Sampling points from No. 4 to No. 11 of the estuary area, wherein the average value of the initial nitrate nitrogen is 3.21 mg/L; the mean values in the middle and late stages were 0.68 and 0.15mg/L, respectively. Sampling points No. 12 to No. 16, wherein the content of nitrate nitrogen at the initial stage is between 0.75 and 5.63 mg/L; the middle stage and the later stage are respectively 0.51-0.86 mg/L and 0.14-0.16 mg/L.
Sampling points from No. 1 to No. 3 of the river channel, wherein the total nitrogen is 5.07-8.43 mg/L in the initial stage of maintenance engineering; the total nitrogen content in the middle and later stages gradually decreased, with average values of 2.41 and 1.38mg/L, respectively. Sampling points No. 4 to No. 11 in the estuary area, wherein the initial total nitrogen is 1.00-7.48 mg/L; the content of the intermediate and later stages is obviously reduced and is respectively 0.88-1.45 mg/L and 0.72-1.86 mg/L. Sampling points from No. 12 to No. 16 around the engineering area, wherein the average value of the initial total nitrogen is 2.74 mg/L; the mean values in the middle and late stages were 1.32 and 0.95mg/L, respectively.
Sampling points from No. 1 to No. 3 of the river channel, wherein the total phosphorus in the initial stage of the maintenance engineering is between 0.5 and 0.47 mg/L; the middle stage and the later stage are respectively 0.05-0.18 mg/L and 0.10-0.12 mg/L. The sampling points from No. 4 to No. 11 in the estuary region had an average total phosphorus of 0.17mg/L in the initial stage and 0.21 and 0.10mg/L in the middle and late stages, respectively. And the total phosphorus at the periphery of the engineering area is No. 12 to No. 16, the initial total phosphorus is 0.16-0.37 mg/L, and the average values of the total phosphorus at the middle stage and the later stage are 0.14 and 0.10mg/L respectively.
Heavy metal pollution is mainly concentrated on No. 12 to No. 16 points around the engineering area, the mass concentration of lead in the initial stage is 0.2-0.4 mg/L, and the average values of the mass concentrations of lead in the middle stage and the later stage are 0.15 and 0.1mg/L respectively.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (5)
1. The constructed wetland sewage toxicity emission reduction system is characterized in that: the system comprises four settling zones, the height of which is: first sedimentation district (1) > second sedimentation district (2) > third sedimentation district (3) > fourth sedimentation district (4), first sedimentation district (1) in be equipped with cloth ditch (12), and the top of cloth ditch (12) is equipped with water inlet (13), the top of first sedimentation district (1) is equipped with overflow weir (14), and the top of fourth sedimentation district (4) is equipped with delivery port (15).
2. The constructed wetland sewage toxicity reducing discharge system of claim 1, characterized in that: the middle lower part of the first settling zone (1) is provided with a soil layer, and the upper part is a water layer.
3. The constructed wetland sewage toxicity reducing discharge system of claim 1, characterized in that: the middle lower part of the second settling zone (2) is provided with a soil layer, and the upper part is a water layer.
4. The constructed wetland sewage toxicity reducing discharge system of claim 1, characterized in that: the middle lower part of the third settling zone (3) is provided with a gravel soil layer (9), and the upper part is a water layer.
5. The constructed wetland sewage toxicity reducing discharge system of claim 1, characterized in that: the middle lower part of the fourth settling zone (4) is provided with a pyrite-volcanic rock filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021179201.XU CN212610145U (en) | 2020-06-23 | 2020-06-23 | Constructed wetland sewage toxicity emission reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021179201.XU CN212610145U (en) | 2020-06-23 | 2020-06-23 | Constructed wetland sewage toxicity emission reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212610145U true CN212610145U (en) | 2021-02-26 |
Family
ID=74755191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021179201.XU Active CN212610145U (en) | 2020-06-23 | 2020-06-23 | Constructed wetland sewage toxicity emission reduction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212610145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282488A (en) * | 2022-09-27 | 2023-06-23 | 南京华创环境技术研究院有限公司 | An airlift reactor for deep nitrogen and phosphorus removal |
-
2020
- 2020-06-23 CN CN202021179201.XU patent/CN212610145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116282488A (en) * | 2022-09-27 | 2023-06-23 | 南京华创环境技术研究院有限公司 | An airlift reactor for deep nitrogen and phosphorus removal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105668787B (en) | Combined type multi-stage aeration biological filter tank and its sewage treatment process | |
| CN111484132A (en) | Composite artificial wetland system for advanced treatment of tail water and sewage treatment method | |
| CN1182056C (en) | Composite Wetland Ecological Method and System for Nitrogen and Phosphorus Pollution Control | |
| CN218146048U (en) | Autotrophic bioreactor for advanced treatment of tail water | |
| CN112441704A (en) | Modular combined enhanced denitrification constructed wetland system | |
| CN1868926A (en) | Composite ecological treatment method of sewage for artificial wet land and its system | |
| CN212610145U (en) | Constructed wetland sewage toxicity emission reduction system | |
| CN211339184U (en) | Domestic sewage integrated treatment equipment based on steel slag ceramsite filler biological filter | |
| CN108975599A (en) | Reed wetland sewage purification system and effluent purification method | |
| CN2780751Y (en) | Baffled wetland filter + lateral subsurface flow wetland bed sewage treatment system | |
| CN113526784A (en) | Ecological purification tank for deep nitrogen and phosphorus removal of water body and application | |
| KR100668598B1 (en) | Artificial wetland structure using plant and biological purification and its purification | |
| CN107840457A (en) | A kind of combined type deep layer artificial wet land system and operation method | |
| CN213141557U (en) | Ditch type multi-stage surface flow artificial wetland | |
| CN1246233C (en) | Vertical deflector combined Filtration type dephosphorization and nitrogen rejection facility | |
| CN206783408U (en) | Compound type constructed wetland system for high-ammonia-nitrogen sewage processing | |
| CN100336743C (en) | Jet-flow aeration biological filtering tank | |
| CN112093994B (en) | A CW-MFC device and method for reducing methane and ammonia nitrogen pollution | |
| CN117142684A (en) | A treatment method and device for efficiently removing nitrogen and phosphorus from rural sewage | |
| CN210855710U (en) | Ecological sewage treatment system for expressway service area | |
| CN115806366A (en) | Biological filter integrated treatment system and treatment process for rural domestic sewage | |
| CN210736455U (en) | Unpowered biological ecological treatment device for sewage and sewage treatment system comprising unpowered biological ecological treatment device | |
| CN112830583A (en) | Anti-clogging enhanced nitrogen and phosphorus removal constructed wetland filter tank | |
| CN220745631U (en) | Treatment system for landfill leachate concentrated solution in sanitation field | |
| CN117185534B (en) | Oil refining enterprise initial rainwater collection and treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |