CN110655193A - Composite construction method for large and special-shaped artificial wetland - Google Patents
Composite construction method for large and special-shaped artificial wetland Download PDFInfo
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- CN110655193A CN110655193A CN201911038810.5A CN201911038810A CN110655193A CN 110655193 A CN110655193 A CN 110655193A CN 201911038810 A CN201911038810 A CN 201911038810A CN 110655193 A CN110655193 A CN 110655193A
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 239000000758 substrate Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000001788 irregular Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 239000010865 sewage Substances 0.000 description 6
- 241000588724 Escherichia coli Species 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses a composite construction method of a large-scale and special-shaped artificial wetland, which comprises the following steps: A. the large or special-shaped artificial wetland is decomposed into one or more groups; B. each group of artificial wetland is divided into 2 levels or more of regular artificial wetland treatment units, and the adjacent 2 regular artificial wetland treatment units are connected by a transition section, wherein: the regular artificial wetland treatment unit comprises a regular surface flow wetland treatment unit and/or a regular subsurface flow wetland treatment unit, and the transition section comprises a horizontal subsurface flow wetland type transition section or a surface flow wetland type transition section; C. if step B can not be achieved, step A is repeated to adjust the grouping. The invention realizes the effective utilization of irregular plots by combining the regular artificial wetland treatment units and the transition section rectification, is beneficial to the construction of large and ultra-large artificial wetlands, improves the treatment efficiency of the artificial wetland and prolongs the service life of the artificial wetland.
Description
Technical Field
The invention belongs to the technical field of resources and environment, and particularly relates to a composite construction method of a large-scale and special-shaped artificial wetland, which is suitable for effectively treating rainwater, sewage and drinking water source water in the large-scale or special-shaped artificial wetland.
Background
The artificial wetland system is a complete ecological system, can form good internal circulation, organically combines the treatment of rainwater and sewage or the treatment of micro-polluted drinking water with the ecological construction of the environment, and can create new ecological landscape and beautify the environment while treating the rainwater and sewage or the water of the organic micro-polluted water source. The artificial wetland has become an important means in the current resource and environment fields, and the good effect and adaptability of the artificial wetland also make the artificial wetland have important utilization and popularization values.
However, the artificial wetland is affected by natural conditions such as climate and temperature, and also by problems such as uneven distribution and easy sedimentation. The land allocated to the artificial wetland in the engineering is often irregular in shape, and the artificial wetland constructed on the basis is often low in treatment efficiency due to uneven water distribution.
Even if the artificial wetland is in a regular shape, the water distribution is not uniform and is rapidly expanded due to local blockage, so that the treatment capacity rapidly slides down, for example, the artificial wetland is treated by 10 ten thousand meters in less than 3 years by a certain drinking water source3The processing capacity of the reactor rapidly drops to 5 ten thousand meters3/d。
With the popularization and application of the artificial wetland, the construction of the special-shaped wetland and the large-scale wetland is increased, and a construction technology of the artificial wetland is urgently needed, so that the problem of uneven water distribution is solved, the treatment efficiency is improved, and the service life of the artificial wetland is effectively prolonged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a composite construction method of a large-scale and special-shaped artificial wetland, which is easy to implement and convenient to operate, adopts different forms of wetland combination to realize uniform water distribution, has the characteristics of good flow state, easy maintenance and stable treatment effect, and can organically combine ecological function and treatment function.
In order to achieve the purpose, the invention adopts the following technical scheme:
the composite construction method of the large-scale and special-shaped artificial wetland comprises the combination of the technologies of the decomposition of the large-scale or special-shaped artificial wetland, the construction of regular artificial wetland units, the construction of transition sections and the like. Specifically, the composite construction method of the large-scale and special-shaped artificial wetland comprises the following steps:
A. the large or special-shaped artificial wetland is divided into one group or a plurality of groups, generally not more than 10 groups, and the area of each group is not more than 4500-9000 m2；
B. Each group of artificial wetland is divided into 2 levels or more of regular artificial wetland treatment units, and the adjacent 2 regular artificial wetland treatment units are connected by the transition section, wherein:
the regular artificial wetland treatment unit comprises a regular surface flow wetland treatment unit and/or a regular subsurface flow wetland treatment unit, and the regular subsurface flow wetland treatment unit comprises a regular horizontal subsurface flow wetland treatment unit and/or a regular vertical subsurface flow wetland treatment unit;
the transition section comprises a horizontal undercurrent wetland type transition section or a surface current wetland type transition section;
C. if step B can not be achieved, step A is repeated to adjust the grouping.
Preferably, in the step B, the area of the regular surface flow wetland treatment unit is not more than 3000m2The length-width ratio is 2: 1-10: 1, the water depth is 0.2-0.8 m, and the hydraulic gradient is not more than 0.5%; the area of the regular horizontal subsurface flow wetland treatment unit is not more than 800m2The length-width ratio is not more than 10:1, the length is not more than 20-50 m, the hydraulic gradient is 0.5-1.0%, the water depth is 0.4-1.6 m, and the water surface is 0.05-0.20 m lower than the surface of the substrate; the area of the regular vertical subsurface flow wetland treatment unit is not more than 1500m2The length-width ratio is 2:1, the length is not more than 20 m-50 m, the hydraulic gradient is not more than 1.0%, and the water depth is 1.5 m.
Further, in the step B, the ratio of the average length of the transition section along the water flow direction to the average width perpendicular to the water flow direction is 0.15: 1-3: 1.
Preferably, in the step B, the depth of the horizontal subsurface flow wetland type transition section is the deeper of the front and rear regular artificial wetland treatment units, and the packing grading is configured as follows: 1.8-4 times of the regular artificial wetland treatment units with larger effective particle size is adopted for connecting the two regular horizontal subsurface flow wetland treatment units; when the surface flow wetland type transition section is used for connection between the regular surface flow wetland treatment units, the water depth of the transition section is 1.5-2.5 times that of the transition section with the larger water depth in the front unit and the rear unit; when the water depth of the device is used for connecting the regular surface flow wetland treatment unit and the regular subsurface flow wetland treatment unit, the water depth is 1.5-2.5 times of that of the regular surface flow wetland treatment unit; when the device is used for connecting the regular subsurface flow wetland treatment units, the lower bottom of the device is flush with the lower middle bottom of the front and rear units.
Preferably, in the step A, if surface flow wetland is adopted, the area of each group is not more than 9000m2(ii) a If the subsurface flow wetland is adopted, the area of each group is not more than 4500m2(ii) a If the surface flow wetland and the subsurface flow wetland are combined, the area of each group is not more than 7000m2。
Further, in the step B, the shapes of the regular surface flow wetland treatment unit, the regular horizontal subsurface flow wetland treatment unit and the regular vertical subsurface flow wetland treatment unit are rectangular, trapezoidal or fan-shaped.
The innovation point of the invention is that a specific constructed wetland transition section is added in the middle of the traditional constructed wetland. The two technical short plates which are difficult to effectively utilize the irregular ground and the water distribution uniformity of the large-scale artificial wetland are solved through the innovation.
The typical treatment effect of treating rural sewage by adopting the artificial wetland of the invention is shown as follows:
| item | COD | TN | TP | Ammonia nitrogen | Escherichia coli |
| Inflow (mg/L) | 55 | 28 | 2 | 22 | 90* |
| Water outlet (mg/L) | 16 | 11 | 0.5 | 8 | 4* |
| Removal rate | 71％ | 61％ | 75％ | 64％ | 96％ |
*: unit x 103CFU/100mL
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention realizes the construction of the special-shaped artificial wetland, solves the problem that the artificial wetland has a landscape function of the special-shaped land and a treatment function of the traditional artificial wetland in the prior art;
(2) and the traditional artificial wetland single group is broken through and 1500-3000 m2The technical limitation of (1) can realize single group of 4500-9000 m2The single group scale can be enlarged by 200% at most for the construction of the super-large artificial wetland, which is beneficial to the construction of large and super-large artificial wetlands;
(3) the invention can realize the water distribution uniformity of more than 80-90%, which is improved by more than 10-20% compared with the traditional artificial wetland, and the treatment efficiency is improved by 20%, thereby correspondingly prolonging the service life of the artificial wetland by more than 20-40%.
Drawings
Fig. 1 is a schematic plan view (two-stage series connection) of the constructed wetland constructed by the invention.
Fig. 2 is a schematic plan view (multi-stage series) of the constructed wetland constructed by the invention.
Wherein: 1-a water inlet device, 2-a water outlet device, a 3-first section of a regular artificial wetland, a 4-first transition section, a 5-second section of the regular artificial wetland, a 6-second transition section and a 7-third section of the regular artificial wetland.
Detailed Description
Referring to fig. 1, the large-scale special-shaped artificial wetland (two-stage series connection) comprises a water inlet device 1, a first section 3 of a regular artificial wetland, a first transition section 4, a second section 5 of the regular artificial wetland and a water outlet device 2. The connection relation is as follows: the water inlet device 1 is connected with the first section 3 of the regular artificial wetland, the second section 5 of the regular artificial wetland is connected with the water outlet device 2, and the first section 3 of the regular artificial wetland is connected with the second section 5 of the regular artificial wetland through the first transition section 4.
Referring to fig. 2, the large-scale special-shaped artificial wetland (multi-stage series connection) comprises a water inlet device 1, a first section 3 of a regular artificial wetland, a first transition section 4, a second section 5 of the regular artificial wetland, a second transition section 6, a third section 7 of the regular artificial wetland and a water outlet device 2. The connection relation is as follows: the water inlet device 1 is connected with the first section 3 of the regular artificial wetland, the third section 7 of the regular artificial wetland is connected with the water outlet device 2, the first section 3 of the regular artificial wetland is connected with the second section 5 of the regular artificial wetland through the first transition section 4, and the second section 5 of the regular artificial wetland is connected with the third section 7 of the regular artificial wetland through the second transition section 6.
Example 1:
as shown in figure 2, the composite construction method of the large and special-shaped artificial wetland is adopted under the condition of irregular land occupation shape, and comprises the following steps:
(1) dividing the land block into 1 group, combining two-stage surface flow wetland and one-stage subsurface flow wetland into 3 stages in series, wherein the area of the group is 2900m2。
(2) The group of artificial wetland is divided into 3 regular artificial wetland treatment units. The adjacent 2 regular artificial wetland treatment units are connected by a transition section.
The regular artificial wetland treatment unit comprises 2 regular surface flow wetland treatment units and regular horizontal subsurface flow wetland treatment units, and the units are generally rectangular, trapezoidal or fan-shaped. The areas of the 2 regular surface flow wetland treatment units are respectively 1000m2、900m2The length-width ratio is respectively 2:1 and 8:1, the water depth is respectively 0.4m and 0.6m, and the hydraulic gradient is 0.2 percent; the area of the regular horizontal subsurface flow wetland treatment unit is 800m2Aspect ratio of 2:1, length of 20m, hydraulic slope of typically 0.6%, water depth of typically 1.2m, water surface 0.10m below substrate surface.
The transition section adopts a surface flow wetland type, and the areas of the transition section are respectively 100m2、100m2The ratio of the average length of the two transition sections in the direction of water flow to the average width perpendicular to the direction of water flow is 0.15:1 and 0.5:1, respectively.
When one surface flow wetland type transition section is used for the connection of 2 regular surface flow wetland treatment units, the water depth is 1.5 times of the larger water depth of the front and rear units; and the other surface flow wetland type transition section is used for connecting the regular surface flow wetland treatment unit and the regular horizontal subsurface flow wetland treatment unit, and the water depth of the transition section is 2.5 times that of the regular surface flow wetland treatment unit.
When one surface flow wetland type transition section is used for the connection between one regular surface flow wetland treatment unit and a regular horizontal subsurface flow wetland treatment unit, the water depth is 1.5 times that of the regular surface flow wetland treatment unit; and the other surface flow wetland type transition section is used for connecting the other regular surface flow wetland treatment unit and the regular horizontal subsurface flow wetland treatment unit, and the water depth of the transition section is 2.5 times that of the regular surface flow wetland treatment unit.
(3) The grouping is made possible by the checking step (2).
The constructed artificial wetland realizes the following effects:
1) the construction of the special-shaped artificial wetland is realized, the problem that the artificial wetland has a landscape function of the special-shaped land and a treatment function of the traditional artificial wetland in the prior art is solved;
2) the typical treatment effect of treating rural sewage by adopting the artificial wetland of the invention is shown as follows:
*: unit x 103CFU/100mL
Example 2:
as shown in fig. 1, under the condition of large land and large constructed wetland area, the composite construction method of the large and special-shaped constructed wetland is adopted, and comprises the following steps:
(1) will land block 10000m2Dividing into 2 groups, each group adopts two-stage surface flow wetland combination as shown in figure 1, and each group has an area of 5000m2。
(2) Each group of artificial wetland is divided into 2 regular artificial wetland treatment units. The adjacent 2 regular artificial wetland treatment units are connected by a transition section.
The regular artificial wetland treatment unit comprises two regular surface flow wetland treatment units, the unit is rectangular, and the areas of the treatment units are 2000m2、2600m2The length-width ratio is 5:1, the length-width ratio is 10:1, the water depth is 0.2m and 0.8m respectively, and the hydraulic gradient is 0.5%.
The transition section is of surface flow wetland type and has an area of 200m2、200m2The ratio of the average length of the transition section in the direction of water flow to the average width perpendicular to the direction of water flow is 1.25: 1.
The surface flow wetland type transition section is used for connecting 2 regular surface flow wetland treatment units, and the water depth of the transition section is 2.5 times of that of the unit with the larger water depth.
(3) The grouping is made possible by the checking step (2).
The constructed wetland is adjusted and constructed to realize the following effects:
(1) single-group artificial wetBreaks through 3000m of the traditional surface flow wetland2The management difficulty is reduced and the water distribution uniformity is improved due to the limitation of the water distribution system;
(2) the typical treatment effect of treating urban non-point source pollution by adopting the artificial wetland of the invention is shown in the following table:
| item | COD | SS | TP | Ammonia nitrogen | Escherichia coli |
| Inflow (mg/L) | 80 | 180 | 3.2 | 15 | 150* |
| Water outlet (mg/L) | 18 | 20 | 0.7 | 7 | 8* |
| Removal rate | 78％ | 89％ | 78％ | 53％ | 95％ |
*: unit x 103CFU/100mL
Example 3:
under the conditions of large land occupation and large constructed artificial wetland area, the composite construction method of the large and special-shaped artificial wetland is adopted, and comprises the following steps:
(1) land mass 3900m2Divided into 3 groups, each group adopts two-stage subsurface flow wetland combination, and the area of each group is 1300m2。
(2) Each group of artificial wetland is divided into 2 regular artificial wetland treatment units. The adjacent 2 regular artificial wetland treatment units are connected by a transition section.
The regular artificial wetland treatment unit comprises 2 regular horizontal subsurface wetland treatment units, and the unit is trapezoidal in shape. The treatment units of the regular horizontal subsurface flow wetland are the same, and the areas of the treatment units are all 600m2Aspect ratio of 6:1, length of 60m, hydraulic slope of typically 1.0%, water depth of typically 1.6m, and water level of 0.20m below the substrate surface.
The transition section is of a horizontal undercurrent wetland type, and the areas of the transition section and the undercurrent wetland type are respectively 50m2、50m2And the transition section is connected between the two regular horizontal subsurface flow wetland treatment units, and the ratio of the average length of the transition section along the water flow direction to the average width perpendicular to the water flow direction is 0.5: 1.
The depth of the horizontal subsurface flow wetland type transition section is the deeper one of the front and back regular horizontal subsurface flow wetland treatment units, and the filler gradation is configured as follows: 1.8-4 times of the larger effective particle size in the regular horizontal subsurface wetland treatment unit is adopted.
(3) The grouping is made possible by the checking step (2).
The constructed wetland is adjusted and constructed for treating secondary treatment tail water of a sewage plant, and the following effects are realized:
| item | COD | TN | TP | Ammonia nitrogen | Escherichia coli |
| Inflow (mg/L) | 65 | 25 | 0.9 | 15 | 20* |
| Water outlet (mg/L) | 18 | 10 | 0.45 | 5 | 1* |
| Removal rate | 72％ | 60％ | 50％ | 67％ | 95％ |
*: unit x 103CFU/100mL
Example 4:
under the conditions of large land occupation and large constructed artificial wetland area, the composite construction method of the large and special-shaped artificial wetland is adopted, and comprises the following steps:
(1) dividing the land into 3 groups, each group adopts two-stage subsurface flow wetland combination, and the area of each group is 540m2。
(2) Each group of artificial wetland is divided into 2 regular artificial wetland treatment units. The adjacent 2 regular artificial wetland treatment units are connected by a transition section.
The regular artificial wetland treatment unit comprises 1 regular vertical subsurface flow wetland treatment unit and 1 regular horizontal subsurface flow wetland treatment unit, and the units are fan-shaped. The area of the regular horizontal subsurface flow wetland treatment unit is 300m2Aspect ratio of 3:1, length of 30m, hydraulic slope of typically 0.5%, water depth of typically 0.4m, and water level of 0.05m below the substrate surface. The area of the regular vertical subsurface flow wetland treatment unit is 200m2The length-width ratio is 2:1, the length is 20m, the hydraulic gradient is not more than 1.0 percent, and the water depth is 1.5 m.
The transition section is of surface flow wetland type and has an area of 40m2And the transition section is connected between the regular vertical subsurface flow wetland treatment unit and the regular horizontal subsurface flow wetland treatment unit, and the ratio of the average length of the transition section along the water flow direction to the average width of the transition section perpendicular to the water flow direction is 3: 1.
The surface flow wetland type transition section is used for connecting the regular vertical subsurface flow wetland treatment unit and the regular horizontal subsurface flow wetland treatment unit, and the lower bottom of the transition section is flush with the lower middle bottom of the regular vertical subsurface flow wetland treatment unit and the regular horizontal subsurface flow wetland treatment unit.
(3) The grouping is made possible by the checking step (2).
The constructed wetland is used for treating polluted river water, and the following effects are realized:
| item | CODMn | Turbidity of water | Ammonia nitrogen | Escherichia coli |
| Inflow (mg/L) | 6 | 45* | 2 | 3** |
| Water outlet (mg/L) | 3 | 5* | 0.25 | 0.5** |
| Removal rate | 50％ | 89％ | 88％ | 83％ |
*: unit NTU
**: unit x 103CFU/100mL。
Claims (6)
1. A composite construction method of large and special-shaped artificial wetlands is characterized by comprising the following steps: the method comprises the following steps:
A. the large or special-shaped artificial wetland is decomposed into one group or a plurality of groups, and the area of each group is not more than 4500-9000 m2；
B. Each group of artificial wetland is divided into 2 or more regular artificial wetland treatment units, and the adjacent 2 regular artificial wetland treatment units are connected by a transition section, wherein:
the regular artificial wetland treatment unit comprises a regular surface flow wetland treatment unit and/or a regular subsurface flow wetland treatment unit, and the regular subsurface flow wetland treatment unit comprises a regular horizontal subsurface flow wetland treatment unit and/or a regular vertical subsurface flow wetland treatment unit;
the transition section comprises a horizontal undercurrent wetland type transition section or a surface current wetland type transition section;
C. if step B can not be achieved, step A is repeated to adjust the grouping.
2. The composite construction method of the large-scale and special-shaped artificial wetland according to claim 1, which is characterized in that: in the step B, the area of the regular surface flow wetland treatment unit is not more than 3000m2The length-width ratio is 2: 1-10: 1, the water depth is 0.2-0.8 m, and the hydraulic gradient is not more than 0.5%;
the area of the regular horizontal subsurface flow wetland treatment unit is not more than 800m2The length-width ratio is not more than 10:1, the length is not more than 20-50 m, the hydraulic gradient is 0.5-1.0%, the water depth is 0.4-1.6 m, and the water surface is 0.05-0.20 m lower than the surface of the substrate;
the area of the regular vertical subsurface flow wetland treatment unit is not more than 1500m2The length-width ratio is 2:1, the length is not more than 20 m-50 m, the hydraulic gradient is not more than 1.0%, and the water depth is 1.5 m.
3. The composite construction method of the large-scale and special-shaped artificial wetland according to claim 1, which is characterized in that: in the step B, the ratio of the average length of the transition section along the water flow direction to the average width of the transition section perpendicular to the water flow direction is 0.15: 1-3: 1.
4. The composite construction method of the large-scale and special-shaped artificial wetland according to claim 1, which is characterized in that: in the step B, the depth of the horizontal subsurface flow wetland type transition section is the deeper one of the front and back regular artificial wetland treatment units, and the filler gradation is configured as follows: 1.8-4 times of the regular artificial wetland treatment units with larger effective particle size is adopted for connecting the two regular horizontal subsurface flow wetland treatment units;
when the surface flow wetland type transition section is used for connection between the regular surface flow wetland treatment units, the water depth of the transition section is 1.5-2.5 times that of the transition section with the larger water depth in the front unit and the rear unit; when the water depth of the device is used for connecting the regular surface flow wetland treatment unit and the regular subsurface flow wetland treatment unit, the water depth is 1.5-2.5 times of that of the regular surface flow wetland treatment unit; when the device is used for connecting the regular subsurface flow wetland treatment units, the lower bottom of the device is flush with the lower middle bottom of the front and rear units.
5. The composite construction method of the large-scale and special-shaped artificial wetland according to claim 1, which is characterized in that: in the step A, if surface flow wetland is adopted, the area of each group is not more than 9000m2(ii) a If the subsurface flow wetland is adopted, the area of each group is not more than 4500m2(ii) a If the surface flow wetland and the subsurface flow wetland are combined, the area of each group is not more than 7000m2。
6. The composite construction method of the large-scale and special-shaped artificial wetland according to claim 1, which is characterized in that: in the step B, the regular surface flow wetland treatment unit, the regular horizontal subsurface flow wetland treatment unit and the regular vertical subsurface flow wetland treatment unit are rectangular, trapezoidal or fan-shaped.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001756A (en) * | 2010-12-17 | 2011-04-06 | 四川理工学院 | Stable surface flow wetland for preventing silting and sewage treatment method |
| CN102583759A (en) * | 2012-02-24 | 2012-07-18 | 深圳大学 | Cascaded combined-flow artificial wetland system and sewage ecological purifying method thereof |
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- 2019-10-29 CN CN201911038810.5A patent/CN110655193A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001756A (en) * | 2010-12-17 | 2011-04-06 | 四川理工学院 | Stable surface flow wetland for preventing silting and sewage treatment method |
| CN102583759A (en) * | 2012-02-24 | 2012-07-18 | 深圳大学 | Cascaded combined-flow artificial wetland system and sewage ecological purifying method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 全国勘察设计注册工程师环保专业管理委员会等: "《注册环保工程师专业考试复习教材 第3分册 上》", 北京：中国环境科学出版社, pages: 782 - 783 * |
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