CN113024025A - Ecological bank protection construction method for improving urban river water environment - Google Patents
Ecological bank protection construction method for improving urban river water environment Download PDFInfo
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- CN113024025A CN113024025A CN202110259673.9A CN202110259673A CN113024025A CN 113024025 A CN113024025 A CN 113024025A CN 202110259673 A CN202110259673 A CN 202110259673A CN 113024025 A CN113024025 A CN 113024025A
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- ecological
- river
- bank protection
- water environment
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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
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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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
Abstract
The invention relates to an ecological bank protection construction method for improving an urban river water environment, and belongs to the technical field of water environment treatment and water ecological restoration. The method comprises the following steps, including S1: inoculating and culturing activated sludge, performing biofilm formation by using activated zeolite after the culture of the denitrification flora is finished, filling the ecological bag after the biofilm formation, and simultaneously doping river sand into the ecological bag; s2: an ecological treatment area is arranged in the river channel by soil conservation piles, a biological packing layer is paved after the bottom of the ecological treatment area is filled with river channel sludge, and aquatic plants are planted on the biological packing layer. Has the advantages that: the construction is convenient, the investment is less, the construction period is short, the maintenance is easy, the replacement is convenient at the later stage, and the operation cost is lower; the planting ditches are staggered and in a grid shape, have a buffering effect on water flow, are beneficial to keeping of ecological bags, and have long-term vegetation recovery benefits; can effectively collect and treat the pollutants entering the river and has popularization and application prospects in the aspect of river water environment treatment.
Description
Technical Field
The invention belongs to the technical field of water environment treatment and water ecological restoration, and particularly relates to a construction method of an ecological bank protection for improving the water environment of an urban river.
Background
The urban river channel has unique water conservancy characteristics, is a water conservancy facility between a natural river channel and an artificial channel, has long-term problems of sludge sedimentation and water pollution of the urban river channel caused by high-speed propulsion of an urbanization process, is not beneficial to maintaining the balance and sustainable development of an urban ecological system, and has great significance in developing water environment treatment work. At present, the treatment of urban river water environment mainly starts from three aspects: firstly, the input of exogenous pollutants is controlled, and rain and sewage are shunted by modifying a pipe network and the like so as to reduce pollutants entering a river channel; secondly, the existing pollutants in the river are reduced, and the measures of manual dredging, blue algae salvage and the like are included; and thirdly, improving the pollutant carrying capacity of the water body, including building an ecological floating island, using oxygen increasing aeration equipment and the like. However, the rain and sewage diversion system in China is still deficient, complete control of pollutants from the source is difficult to achieve, manual dredging construction is difficult, time and labor are consumed, sludge treatment cost is high, and the ecological floating island has the problems of long construction period, easy washout in the flood season and the like.
The river bank protection is used as a transition zone for connecting aquatic and land ecosystems, has important effects on preventing water and soil loss, purifying water quality and the like, and the traditional bank protection engineering usually ignores the own ecological functions of rivers and pays more attention to the flood control function of the rivers, so that materials such as cement, stone, asphalt, concrete and the like are mostly adopted, the structure is hard, the function is single, and the self-cleaning function of the river ecosystem is not favorably exerted. The ecological bank protection comprehensively utilizes plant measures and engineering measures, so that the river bank has permeability, has flood control, landscape and other benefits, and establishes the ecological bank protection, which is beneficial to building urban ecological galleries of green water-clear bank, shallow fish-flying bottom, rich and beautiful water and grass and herds.
Therefore, the ecological bank protection construction method for improving the urban river water environment is provided to solve the defects in the prior art.
Disclosure of Invention
The invention provides the ecological bank protection construction method for improving the water environment of the urban river channel to solve the technical problems, and the construction is convenient, the investment is less, the construction period is short, the maintenance is easy, the replacement is convenient in the later period, and the operation cost is lower; the planting ditches are staggered and in a grid shape, have a buffering effect on water flow, are beneficial to keeping of ecological bags, and have long-term vegetation recovery benefits; can effectively collect and treat the pollutants entering the river and has popularization and application prospects in the aspect of river water environment treatment.
The technical scheme for solving the technical problems is as follows: the construction method of the ecological bank protection for improving the urban river water environment comprises the following steps of S1: inoculating and culturing activated sludge, performing biofilm formation by using activated zeolite after the culture of the denitrification flora is finished, filling the ecological bag after the biofilm formation, and simultaneously doping river sand into the ecological bag; s2: arranging an ecological treatment area in the river channel by using soil conservation piles, paving a biological filler layer after filling river channel sludge at the bottom of the ecological treatment area, and planting aquatic plants on the biological filler layer; s3: the method comprises the steps that a wetland configured by vegetation is planted on a revetment, a water collecting underdrain is constructed at the bottom of the wetland to form an ecological buffer area, a sewage lifting pump is arranged at a fixed point in the ecological buffer area, sewage in the water collecting underdrain is collected in a centralized manner and is discharged into a municipal sewage system; s4, digging planting ditches on the revetment along 45 and 135 degrees with the water flow direction, planting herbaceous or shrub plants, and forming a plant grid; s5: and paving the ecological bag and a common ecological bag for planting plants on the plant grid.
Has the advantages that: the construction is convenient, the investment is less, the construction period is short, the maintenance is easy, the replacement is convenient at the later stage, and the operation cost is lower; the planting ditches are staggered and in a grid shape, have a buffering effect on water flow, are beneficial to keeping of ecological bags, and have long-term vegetation recovery benefits; can effectively collect and treat the pollutants entering the river and has popularization and application prospects in the aspect of river water environment treatment.
Further, in step S2, the aquatic plant is reed, canna or calamus.
The beneficial effect of adopting the further scheme is that: the water purification effect is enhanced.
Further, in step S2, the soil conservation pile is a pine pile.
The beneficial effect of adopting above-mentioned further scheme is the soil of being convenient for collect.
Further, in step S4, the planting furrows have a pitch of 2m, a width of 20cm and a depth of 10 cm.
The beneficial effect of adopting the further scheme is that: the plant is convenient to plant, has certain interception effect on solid pollutants in river water flow, and does not influence flood discharge.
Further, in step S4, the herbaceous plant is bermuda grass or creeping oxalis, and the shrub plant is hippophae rhamnoides.
The beneficial effect of adopting the further scheme is that: has certain interception effect on solid pollutants in river water flow.
Further, in step S5, the number of the ecological bags containing microorganisms is 1/3 of the total number of the ecological bags.
The beneficial effect of adopting the further scheme is that: decompose organic substances in the pollutants and promote the production of plants.
Drawings
Fig. 1 is a side view of a river channel used in an ecological bank protection construction method for improving an urban river channel water environment according to the embodiment;
fig. 2 is a top view of a river channel adopted by the ecological bank protection construction method for improving the water environment of an urban river channel provided by the embodiment;
1. an ecological bag; 2. collecting underdrains; 3. protecting feet by throwing stones; 4. soil conservation piles; 5. an aquatic plant; 6. river sludge; 7. a biological filler layer; 8. wetland; 9. a sewage lift pump; 10. and (4) plant grids.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1
The embodiment provides an ecological bank protection construction method for improving urban river water environment, which comprises the following steps: in this embodiment, the width of the river channel is 20m, and the normal water level is 2 m. S1: taking 2L of natural zeolite with the particle size of about 2mm, washing with deionized water, naturally airing, and burning for 3 hours at 450 ℃ by using a muffle furnace in a beaker to achieve an activation effect; inoculating and culturing activated sludge, after the culture of denitrifying bacteria is finished, putting activated zeolite into a denitrifying bacteria enrichment culture medium which is successfully cultured, placing the denitrifying bacteria enrichment culture medium on a shaking table for 48 hours to adsorb and form a film, filling the film into an ecological bag 1, and simultaneously adding river sand into the ecological bag to increase the water permeability of the ecological bag, wherein the river sand accounts for about 20% -30%;
s2: arranging an ecological treatment area of 2m in a river channel by using soil conservation piles 4, paving a biological filler layer 7 after filling river channel sludge 6 at the bottom of the ecological treatment area, and planting aquatic plants 5 on the biological filler layer, wherein the aquatic plants 5 are reeds, canna indica or calamus;
s3: planting a wetland 8 configured by vegetation on a revetment, constructing a water collecting underdrain 2 at the bottom of the wetland 8 to form an ecological buffer area with the width of 1.5m and the depth of 50cm, arranging a sewage lifting pump 9 at a fixed point in the ecological buffer area, collecting sewage in the water collecting underdrain 2 in a centralized manner, and discharging the sewage into a municipal sewage system;
s4, digging planting furrows with a distance of 2m, a width of 20cm and a depth of 10cm on the revetment along 45 degrees and 135 degrees with the water flow direction respectively, planting herbaceous plants or shrub plants, wherein the herbaceous plants are Bermuda grass or creeping oxalis, and the shrub plants are hippophae rhamnoides to form a plant grid 10;
s5: the ecological bags 1 and the common ecological bags for planting plants are laid on the plant grids 10, the bottom parts of the ecological bags 1 and the common ecological bags for planting plants are provided with riprap bankets 3, and the number of the microbial ecological bags in the ecological bags 1 is 1/3 of the total number of the ecological bags 1, so that the bank protection has a water purification function, has good ornamental value, and has both ecological benefit and landscape benefit.
After the ecological bank protection is constructed by the method, the contents of ammonia nitrogen and total nitrogen in the water body are reduced to some extent after the surface runoff is treated by the microbial ecological bag, meanwhile, the ecological buffer area can intercept the surface runoff, pollutants in the surface runoff are purified and filtered and are collected into the water collecting underdrain 2 and are intensively discharged into a municipal sewage system through the sewage lifting pump 9, and the runoff filtered by the buffer area can be further purified by the aquatic plants 5 in the ecological treatment area, so that river pollutants are reduced, and the improvement of the water environment of the river channel is realized.
In the description of the present invention, it is to be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An ecological bank protection construction method for improving urban river water environment is characterized by comprising the following steps:
s1: inoculating and culturing activated sludge, performing biofilm formation by using activated zeolite after the culture of the denitrification flora is finished, filling the ecological bag (1) after the biofilm formation, and simultaneously doping river sand into the ecological bag;
s2: arranging an ecological treatment area in a river channel by using soil conservation piles (4), filling river channel sludge (6) at the bottom of the ecological treatment area, then paving a biological filler layer (7), and planting aquatic plants (5) on the biological filler layer;
s3: planting a wetland (8) configured by vegetation on a revetment, constructing a water collecting underdrain (2) at the bottom of the wetland (8) to form an ecological buffer area, arranging a sewage lifting pump (9) at a fixed point in the ecological buffer area, and collecting sewage in the water collecting underdrain (2) in a centralized manner and discharging the sewage into a municipal sewage system;
s4, digging planting ditches on the revetment along 45 and 135 degrees with the water flow direction, planting herbaceous or shrub plants, and forming a plant grid (10);
s5: and paving the ecological bag (1) and a common ecological bag for planting plants on the plant grid (10).
2. The ecological bank protection construction method for improving the urban riverway water environment according to claim 1, wherein the aquatic plant (5) in step S2 is reed, canna or calamus.
3. The ecological bank protection construction method for improving the urban river water environment according to claim 1, wherein the soil conservation piles (4) in step S2 are pine piles.
4. The ecological bank protection construction method for improving the urban river channel water environment according to claim 1, wherein in step S4, the planting furrows are spaced at intervals of 2m, have a width of 20cm and a depth of 10 cm.
5. The method for constructing an ecological bank protection for improving the aquatic environment of an urban river as claimed in claim 1, wherein the herbaceous plant is bermuda grass or creeping oxalis and the shrub plant is hippophae rhamnoides in step S4.
6. The ecological bank protection construction method for improving the urban river water environment according to claim 1, wherein in step S5, the number of the microorganism ecological bags in the ecological bags (1) is 1/3 of the total number of the ecological bags (1).
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2021
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Application publication date: 20210625 |