AU2020104339A4 - A method for remediation of water pollution by multiple aquatic plants - Google Patents
A method for remediation of water pollution by multiple aquatic plants Download PDFInfo
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- AU2020104339A4 AU2020104339A4 AU2020104339A AU2020104339A AU2020104339A4 AU 2020104339 A4 AU2020104339 A4 AU 2020104339A4 AU 2020104339 A AU2020104339 A AU 2020104339A AU 2020104339 A AU2020104339 A AU 2020104339A AU 2020104339 A4 AU2020104339 A4 AU 2020104339A4
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- plants
- remediation
- polluted water
- aquatic plants
- water body
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for remediation of water pollution by multiple aquatic plants,
which comprises the following steps: Setting a physical fence at the upstream position of the
polluted water body to intercept floating objects with large volume. Artificial floating islands
are arranged on the polluted water body at intervals, and the artificial floating islands account
for about 10% of the total area of the polluted water body. Paving a submerged
phytoremediation layer at the bottom of the polluted water body. Regularly maintain and
manage aquatic plants, and absorb heavy metal ions and nutrient salts in polluted water bodies
by combining three-dimensional distributed physical fences, submerged plants, floating plants
and artificial floating islands. The invention improves the absorption of nutrients and copper
ions in the polluted water body by multiple aquatic plants, cooperates with timing harvesting
plants, accelerates the purification of polluted water body, and has the advantages of simple
operation and low cost.
Description
A method for remediation of water pollution by multiple aquatic plants
The invention relates to the technical field of water pollution treatment, in particular to a
method for remediation of water pollution by multiple aquatic plants.
Traditional ecological remediation technology is mainly based on the remediation of
submerged macrophytes in situ water. Submerged macrophytes, as the most important
part in food chain remediation, are widely used in closed lakes or water bodies that can be
ecologically restored by precipitation construction because of its good effect, low
maintenance cost and sustainable ecology. However, submerged macrophytes have
certain requirements on illumination, water transparency, sediment and water depth. The
current remediation technology has certain limitations for rivers with long-term water
flow (flow velocity less than 0.5m/s), water bodies with large water level variation and
water bodies with deep water depth and low transparency (low transparency caused by
suspended solids), and submerged plants may not survive and grow.
With the increasing efforts of ecological remediation, people's awareness of ecological
remediation of surrounding water bodies has been continuously strengthened, and the
original closed lake remediation technology has also reached a certain stage. The
ecological remediation of flowing rivers (flow velocity less than 0.5m/s), water bodies
with large water level variation and water bodies with deep water depth and low
transparency still stays at the stage of simply improving water quality and transparency in the earlier stage, but only improving water quality index and water transparency cannot restore the food chain of the complete ecosystem.
In river course with a flow velocity less than 0.5m/s, it is impossible to operate damming
and dewatering, and it is difficult to figure out the bottom situation when the water depth
is deep, that makes ecological remediation difficult. Some lakes have thick silt, which
cannot be drained and replenished due to conditions, so large-scale dredging with water is
required, which with heavy workload and high cost, and there is no place to dispose of
the cleared silt, so a method for remediation of water pollution by multiple aquatic plants
is needed.
The technical problem to be solved by the invention is to overcome the existing defects,
provide a method for remediation of water pollution by multiple aquatic plants,
effectively separate neutral panax notoginseng polysaccharide from acidic
polysaccharide, and effectively solve the above problems.
A method for remediation of water pollution by multiple aquatic plants is characterized
by comprising the following steps:
A, a physical fence is arranged at the upstream position of the polluted water body to
intercept large floating objects.
B, artificial floating islands are arranged on the polluted water body at intervals, aeration
devices are arranged on the artificial floating islands, and the artificial floating islands
account for about 10% of the total area of the polluted water body.
C, laying a submerged phytoremediation layer at the bottom of the polluted water body.
D, regularly maintain and manage aquatic plants, and absorb heavy metal ions and
nutrient salts in polluted water bodies by the combination of three-dimensional
distributed physical fences, submerged plants, floating plants and artificial floating
islands.
Furthermore, the bottom of the phytoremediation layer is paved with non-woven fabrics,
the upper end of which is paved with a ceramic adsorption layer, and the upper end of the
ceramic adsorption layer is paved with a layer of planting soil, and the submerged plants
are planted on the planting soil.
Furthermore, the ecological floating island is equipped with porous ring combined
packing, and the aquatic plant varieties used are Canna indica L., Cyperus
alternfoliusL., Typha orientalisPres, and Lythrum salicariaL. that with good nitrogen
and phosphorus removal effects.
Furthermore, floating plants are planted between two artificial floating islands, and the
varieties of floating plants used are one or more of Nymphaea tetragona Georgi,
Nymphoidespeltatum(Gmel.)O.Kuntze and Euryaleferox Salisb.exKonigetSims.
Furthermore, a planting box with aquatic plant planting substrate is set at the bottom of
the river, and the aquatic plants include but are not limited to one or more combinations
of Ceratophyllum demersum L., Egeria densa Planch., Nelumbo nucifera and
Potamogeton distinctusA.Benn.
Furthermore, the coverage rate of aquatic plants is 30-40%.
Beneficial effects
One or more technical schemes provided in the invention have at least the following
technical effects or advantages:
1. The method can not only purify water body quickly, build habitats for fish and
microorganisms, and make the whole water system to have clear water and beautiful
scenery, but also has the advantages of low energy consumption, easy construction, good
effect, convenient maintenance, stable food chain and no secondary pollution.
2. It has great economic benefit and market application prospect. It adopts a combination
of three-dimensional distributed physical fence, submerged plants, floating plants and
artificial floating islands to absorb heavy metal ions and nutrient salts in polluted water. It
improves the absorption of nutrient salts and copper ions by plants, cooperates with
regular harvesting of plants, improves the purification speed of polluted water, and has
simple operation and low cost.
Fig. 1 is a flow chart of the method for remediation of water pollution by multi-aquatic
plants in embodiment 1.
In order to further understand the technical characteristics of the present invention, the
invention will be described in detail with specific embodiments below. The embodiments
only have an exemplary effect on the invention, but do not have any restrictive effect.
Any non-substantial modifications made by the technicians in the technical field on the
basis of the invention should belong to the protection scope of the present invention.
Embodiment 1
A, a physical fence is arranged at the upstream position of the polluted water body to
intercept large floating objects.
B, artificial floating islands are arranged on the polluted water body at intervals, aeration
devices are arranged on the artificial floating islands, and the artificial floating islands
account for about 10% of the total area of the polluted water body.
C, laying a submerged phytoremediation layer at the bottom of the polluted water body.
D, regularly maintain and manage aquatic plants, and absorb heavy metal ions and
nutrient salts in polluted water bodies by combining three-dimensional distributed
physical fences, submerged plants, floating plants and artificial floating islands.
The bottom of the phytoremediation layer is paved with non-woven fabric, the upper end
of the non-woven fabric is paved with a ceramic adsorption layer, and the upper end of
the ceramic adsorption layer is paved with a layer of planting soil, and the submerged
plants are planted on the planting soil.
In another embodiment, the ecological floating island is equipped with a porous ring
combined packing, and the aquatic plant varieties used are are Canna indica L., Cyperus
alternfoliusL., Typha orientalisPresl, and Lythrum salicariaL. that with good nitrogen
and phosphorus removal effects.
In another embodiment, floating plants are planted between two artificial floating islands,
and the varieties of floating plants used are one or more of Nymphaea tetragona Georgi,
Nymphoidespeltatum(Gmel.)O.Kuntze and Euryaleferox Salisb.exKonigetSims.
In another embodiment, a planting box with aquatic plant planting substrate is laid at the
bottom of the river channel, and the aquatic plants include but are not limited to one or
more combinations of Ceratophyllum demersum L., Egeria densa Planch., Nelumbo
nucifera and Potamogetondistinctus A.Benn.
In another embodiment, the coverage rate of aquatic plants is 30-40%.
The preferred embodiment of the invention is located in a swan lake in the urban area,
with large daily passenger flow, thick silt at the bottom, large seasonal water level
difference, and no drainage channels. When this embodiment is applied, dredging and
drainage are not needed. After the invention is assembled on the shore, it is manually
installed at a fixed point by using a ship, which improves the transparency. Submerged
plants have formed a growth module after assembly, and because they are close to the
water surface, they are able to quickly absorb sunlight and grow in water with low
transparency. The survival rate of submerged plants reaches more than 92%.
In the swan lake, an artificial floating island with aeration devices was constructed, with
aquatic plants and terrestrial water-loving plants as experimental plants. In the pilot-scale
study, the remediation dynamics of nutrients in overlying water and sediments of the
swan lake were studied.
The results showed that, after more than 4 months of combined artificial floating island
ecological remediation, the removal rates of TN, NH4+-N and TP in the overlying water of the swan lake reached 61.92%, 63.09% and 80.0% respectively, while the removal rates of TN and NH4+-N in sediments reached 23.79% and 37.04% respectively, and the
TP content increased by 43.71%. The accumulation of nitrogen and phosphorus in five
floating bed plants in the combined artificial floating island is significantly different. The
absorption rates of nitrogen and phosphorus by Thalia dealbata and Canna indica L. are
significantly higher than those by Acorus calamus L., Mentha haplocalyx Briq. and Oryza
sativa L.. The absorption rates of nitrogen and phosphorus by Thalia dealbata and Canna
indica L. are 12.19g/(m2.d) and 7.90g/(m2.d), and 0.81g/(m2.d) and 0.99.g/(m2.d),
respectively. The uptake of nitrogen and phosphorus by Canna indica L. and Thalia
dealbata in stem and leaf is both higher than that of root system, among which the uptake
of nitrogen and phosphorus by stem and leaf of Canna indica L. is 2.73 times and 1.93
times that of root system, and that of Thalia dealbata is 1.83 times and 1.19 times,
respectively. Nitrogen and phosphorus in water can be removed by harvesting the above
water part of plants in floating bed system.
The detailed process flow of the invention is described by the embodiments and
comparative embodiments, but the present invention is not limited to the detailed process
flow, and the specific embodiments are only illustrative, not restrictive. It should be
understood by those skilled in the technical field that any improvement, equivalent
replacement of raw materials of the invention, addition of auxiliary components, and
selection of specific modes, etc., are all included in the scope of protection and disclosure
of the present invention.
Although the embodiments disclosed in the present invention are as above, the described
content is only embodiments adopted for the convenience of understanding the invention, and is not intended to limit the invention. Any technicians in the technical field to which this invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope of this invention, but the scope of patent protection of this invention shall still be subject to the scope defined by the appended claims.
Claims (6)
1. A method for remediation of water pollution by multiple aquatic plants, which is
characterized by comprising the following steps
A, a physical fence is arranged at the upstream position of the polluted water body to
intercept large floating objects.
B, artificial floating islands are arranged on the polluted water body at intervals, aeration
devices are arranged on the artificial floating islands, and the artificial floating islands
account for about 10% of the total area of the polluted water body.
C, laying a submerged phytoremediation layer at the bottom of the polluted water body.
D, regularly maintain and manage aquatic plants, and absorb heavy metal ions and
nutrient salts in polluted water bodies by the combination of three-dimensional
distributed physical fences, submerged plants, floating plants and artificial floating
islands.
2. The method for remediation of water pollution by multiple aquatic plants according to
claim 1, which is characterized in that the bottom of the phytoremediation layer is paved
with non-woven fabrics, the upper end of which is paved with a ceramic adsorption layer,
and the upper end of the ceramic adsorption layer is paved with a layer of planting soil,
and the submerged plants are planted on the planting soil.
3. The method for remediation of water pollution by multiple aquatic plants according to
claim 1, which is characterized in that the ecological floating island is equipped with
porous ring combined packing, and the aquatic plant varieties used are Canna indica L.,
Cyperus alternfoliusL., Typha orientalisPresI, and Lythrum salicariaL. that with good
nitrogen and phosphorus removal effects.
4. The method for remediation of water pollution by multiple aquatic plants according to
claim 1, which is characterized in that floating plants are planted between two artificial
floating islands, and the varieties of floating plants used are one or more of Nymphaea
tetragona Georgi, Nymphoides peltatum(Gmel.)O.Kuntze and Euryale ferox Salisb. ex
Konig et Sims.
5. The method for remediation of water pollution by multiple aquatic plants according to
claim 1, which is characterized in that a planting box with aquatic plant planting substrate
is set at the bottom of the river, and the aquatic plants include but are not limited to one
or more combinations of Ceratophyllum demersum L., Egeria densa Planch., Nelumbo
nucifera and Potamogeton distinctus A.Benn.
6. The method for remediation of water pollution by multiple aquatic plants according to
claim 1, which is characterized in that the coverage rate of the aquatic plants is 30-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020104339A AU2020104339A4 (en) | 2020-12-24 | 2020-12-24 | A method for remediation of water pollution by multiple aquatic plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020104339A AU2020104339A4 (en) | 2020-12-24 | 2020-12-24 | A method for remediation of water pollution by multiple aquatic plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020104339A4 true AU2020104339A4 (en) | 2021-03-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020104339A Ceased AU2020104339A4 (en) | 2020-12-24 | 2020-12-24 | A method for remediation of water pollution by multiple aquatic plants |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072189A (en) * | 2021-04-02 | 2021-07-06 | 西安航空学院 | Ecological restoration method for lead-polluted water body |
| CN113480013A (en) * | 2021-07-14 | 2021-10-08 | 南开大学 | Aquatic plant-microorganism electrochemical remediation system and application thereof, and method for treating organic polluted water body |
| CN114031185A (en) * | 2021-11-17 | 2022-02-11 | 南京华州环境科技有限公司 | Multifunctional three-dimensional ecological floating island |
| CN116216943A (en) * | 2023-02-14 | 2023-06-06 | 江苏博凌环境科技有限公司 | Biochemical ecological integration circulation flow-making platform equipment control system |
-
2020
- 2020-12-24 AU AU2020104339A patent/AU2020104339A4/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072189A (en) * | 2021-04-02 | 2021-07-06 | 西安航空学院 | Ecological restoration method for lead-polluted water body |
| CN113480013A (en) * | 2021-07-14 | 2021-10-08 | 南开大学 | Aquatic plant-microorganism electrochemical remediation system and application thereof, and method for treating organic polluted water body |
| CN114031185A (en) * | 2021-11-17 | 2022-02-11 | 南京华州环境科技有限公司 | Multifunctional three-dimensional ecological floating island |
| CN116216943A (en) * | 2023-02-14 | 2023-06-06 | 江苏博凌环境科技有限公司 | Biochemical ecological integration circulation flow-making platform equipment control system |
| CN116216943B (en) * | 2023-02-14 | 2023-10-27 | 江苏博凌环境科技有限公司 | Biochemical ecological integration circulation flow-making platform equipment control system |
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| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |