57 results about "Ecological island" patented technology

The invention discloses a landscape water-body water-quality maintaining and self-purifying system integrating functions of landscape and biological ecological restoration. The system comprises an artificially intensified water quality purifying system, a biological control system and a water circulation system, and is used for ecological maintenance and self-purification of the campus landscape water body. By the artificially intensified water quality purifying system, mechanisms of water circulation and purification are utilized, so that the aim of purifying the landscape water-body water-quality is fulfilled; the artificially intensified water quality purifying system comprises an aeration oxygenation system, an ecological floating bed and a multi-element combined artificial wetland; the biological control system consists of an ecological island and an aquatic animal and plant system and is used for assisting the artificially intensified water quality purifying system to further improve the self-purification capability of a landscape water-body ecological environment; and each system is circularly connected with a processing unit by a water pump and gravity flow. By the landscape water-body water-quality maintaining and self-purifying system, the impact resistance and the water-body water-quality purifying capability of the campus landscape water-body ecological environment can be improved, and the problems of the pollution to the campus landscape water-body and landscape degradation are solved. The landscape water-body water-quality maintaining and self-purifying system is low in cost, low in investment, low in energy consumption, good in purifying effect, and free from secondary pollution.

The invention relates to an artificial ecological island building construction method. A reef table where an artificial island is planned to be built is selected, the area of the reef table is not smaller than 50 m<2>, and the reef-table-based artificial ecological island construction method includes the following steps that firstly, foundation piles are arranged, wherein (1) holes are pre-drilled,(2) main support bodies are pre-embedded, (3) the main support bodies in the step (2) are filled with concrete padding, and (4) the step (1) to the step (3) are repeatedly executed and the multiple foundation piles are arranged on the reef table at equal intervals being 2 m to 3 m; secondly, dam surrounding is carried out; thirdly, dam filling is carried out; and fourthly, on upper space of a dam zone, depending on all foundation piles, a plurality of auxiliary support bodies are erected, and facilities where persons and birds can reside are constructed. The artificial ecological island building construction method has the beneficial effects that coral sand is adopted as a main material, the artificial island is built, raw materials are wide in source, and implementation is easy; by three-dimensional construction of an ecological plant planting region and person and bird resident facilities, the environment-friendly and recyclable artificial island is achieved.

The invention provides a method for constructing an artificial ecological island in wetland, which is to stack building waste and river mud or pond sludge into an island body according to the volume ratio of 2 to 3 on the basis of the prior natural island or a hard foundation in the wetland, and level and grind the island body layer by layer during the stacking; the circumference on the top of the island body is placed by stone and cement mortar, and xerophytes and hygrophytes are planted in the middle on the top of the island body; the stone and the cement mortar are used for placing vertically and horizontally frame bodies on the circumferential island slope of the surface of the island body; waste concrete bodies or gravel is filled into spaces of the frame bodies; slurry is sprayed or poured on the waste concrete bodies or the gravel, and the thickness of the slurry can cover the gravel or rubble; hygrophytes, emergent aquatic plants and submerged plants are planted on a slurry layer; and larger plants are planted before the waste concrete bodies or the gravel is filled. The method has low cost, is convenient to construct, is favorable for conserving water and soil, reduces the gradation degree of the island body, and makes a wetland ecosystem maintain stable.

The invention relates to a high-efficient treatment method for biologically-enhanced coking waste water for a biological membrane. The method comprises treating coking waste water by adopting an anaerobic organism filter and a three-phase aerobic biological circulating fluidized bed coupling process, wherein the method includes a membrane formation period and a normal running period; and in the membrane formation period, a membrane supporting carrier is firstly added into a reactor in the anaerobic organism filter and in the three-phase aerobic biological circulating fluidized bed coupling process, then Comamonas testosteroni CGMCC N0.4630 is fed for membrane formation, and an ecological island system is formed in the system after completion of film formation. Through the treatment of the process, the COD removal rate of the coking waste water can reach more than 94 percent, the NH3-N removal rate reaches more than 98 percent, the outlet water can achieve the first-level drainage standard and recycling standard of national sewage drainage standard (GB9878-1996), and 100 percent recycling of the waste water can be achieved.

The invention discloses a system for purifying lake water quality by utilizing a biological diversity technology. According to the invention, a riparian vegetation belt is arranged on a lakeshore area and comprises riparian trees, shrubs planted below the riparian trees, and herbaceous plants or ground cover plants laid below the shrubs; the vertical cross section of a deep water area is a slope surface with a gradient; the mudflat of a part of lakeshore extends to the deep water area; exposed mudflat is retained; aquatic plants and leguminous plants are planted; the shore of an ecological island is densely planted with aquatic plants or shrubs; central trees are planted in the center of the ecological island; exposed mudflat is remained on the ecological island; and aquatic plants are transplanted on the lake surface of the center of the lake. Through the improvement of biological diversity, pollutants in water are taken out of the water through the food chain relationship of phytoplanktons like algae, zooplanktons, filter-feeding fishes, predacious fishes, birds and other animals; and through increasing and decreasing of the number and distribution of birds, a biological community structure in the water is changed, efficiencies and directions of migration and transformation of the pollutants are controlled, and the purpose of improving the water environment is achieved.

The invention discloses a method for ecological restoration of a river channel by constructing modular ecological islands. The method comprises the following step that the distribution positions of the modular ecological islands to be constructed in the river channel, the number of the ecological islands, the area of each ecological island and the distance between every two ecological islands aredetermined according to the basin perimeter, hydrological characteristics and water treatment requirements of the river channel to be ecologically restored. The construction of the ecological island at each distribution position specifically involves the following steps that an annular enclosure pile frame is constructed at the distribution position, the lower end of the enclosure pile frame is embedded into the river bed for fixation, the upper end of the enclosure pile frame extends to the portion above the normal water level of the river channel, and the peripheral wall of the enclosure pile frame is provided with inflow and outflow gaps for river channel water to penetrate through and used for controlling the water amount and water flow distribution conditions of water flowing in and out of the enclosure pile frame. An island body for conducting natural ecological purification on the river channel water entering each enclosure pile frame is constructed on the portion, in an enclosure area of the enclosure pile frame, of the river bed.

The present invention relates to a darkening and stink river ecosystem reconstruction integration method, which comprises online water quality detection, exogenous pollutant control, endogenous pollutant control, biodiversity restoration, ecological sustainable construction, and a remote intelligent monitoring system, wherein the online water quality detection performs water quality detection on a target water body, the exogenous pollutant control reduce the entering of exogenous pollutants into the target water body, the endogenous pollutant control performs repairing treatment on the target water body, the biodiversity restoration adjusts the microbial flora structure, the fish population structure and density of the target water body, the ecological sustainable construction constructs riverside emerged plants by using an artificial ecological island, and the remote intelligent monitoring system performs the remote supervision and control on the operation condition of the treatment system. According to the present invention, the darkening and stink river ecosystem reconstruction integration method cannot cause secondary pollution to the water body, can promote the water body to restore the self-repair function, and can strengthen the self-purification ability of the water body.

The invention discloses a method for constructing an ecological island reef type marine pasture. The method comprises the steps that a semi-closed bay facing offshore island reefs is selected to be the marine pasture with a depth of 10-20 meters; according to a preset marine pasture scale, a plurality of sets of fixed rafts are sunk outside an island reef shore base, each fixed raft is connected with a boom cable, and the tops of the boom cables are tied with buoys; a polyethylene rope is fixed to the island reef shore base above the water surface, a first anchor chain is embedded in an islandframe in advance, a second anchor chain is sunk in a sea floor hard sand substrate, net clothes of more than one layer are connected between the polyethylene rope and the first anchor chain and the second anchor chain to form a net cage, and fishes proliferate in the net cage; seaweed breeding floating rafts are constructed outside the net cage; sea cucumbers are planted at the bottom of the netcage. Compared with the prior art, the method can maintain the maximum economic output while not causing environmental pressure by relying on the advantage of an island reef area.

The embodiment of the invention provides ecological concrete and a preparation method thereof. Each cubic metre of the ecological concrete is prepared from the following raw materials in a mixing proportion:200-350kg of cement, 158-203kg of water, 1045-1533kg of coarse aggregate, 296-765kg of fine aggregate, 4.9-6.3kg of a water reducing agent, 0-135kg of ore powder and 0.1-2kg of graphene and / orderivatives thereof. According to the ecological concrete provided by the invention, the concrete and the graphene or the derivatives thereof are compounded, and attachment environment is provided formicroorganisms through the biocompatibility and favorable chemical stability of the graphene or the derivatives thereof; and when the ecological concrete is used as a slope protection material of a watercourse and a water body, or is built into an ecological island in the water body, the attachment environment is provided for the microorganisms, so that propagation of the microorganisms is facilitated, and further purification of water quality is facilitated.

The invention relates to the field of ecological floating island sewage treatment and in particular to a riverway oil slick automatic collecting and treating device. The biological floating island of the device comprises an island main frame, large size garbage grating barrier layers arranged around the island main frame and an aquatic plant basket arranged in the island main frame. The island main frame is formed by connecting pipelines provided with water absorption holes in surfaces; the island main frame is connected to a high housepower water suction pump through a water suction pipeline, and a water outlet of the water suction pipeline communicates to a microbial automatic consumption pond which is successively provided with a fine sand filter layer, an activated carbon filter layer and a macadam filter layer from top to bottom; the filtered clean water is returned to a water body of the ecological island in the bottom of the microbiological consumption pond through a drain pipe. The device provided by the invention is capable of automatically cleaning oil slick and foam on the surfaces of water bodies such as riverways and lakes and preventing the oil slick and foam from drifting downward to keep clean water surface, so that the human labor is lowered and the utilization ratio of water resources is increased, and the device also has an environment-beautifying effect of repairing the riverway.

The invention discloses a solar-powered water cycle purification biological and ecological island, including a solar energy water circulation reoxygenation device, two microbial treatment tanks and two groups of ecological floating bed. The water outlets of the solar energy water circulation reoxygenation device and the two microbial treatment tanks are connected with T-shaped pipes; the ecological floating beds are above the microbial treatment tanks; The solar energy water circulation reoxygenation device drives the water in the treatment region water into the microbial treatment tanks; pollutants in the water can be removed under the action of immobilized microorganisms; the outlet water is drawn out by the solar energy water circulation reoxygenation device up to a water surface and slowly pushed out in laminar flow shape; and the whole circulation process not only promotes the flow of the water in the treatment region but realizes water reoxygenation. The invention uses solar energy, combines the circulation reoxygenation technology, immobilized microorganism technology and ecological floating bed technology, efficiently removes contaminants while enhancing the self-purification capacity of water bodies, in order to achieve in-situ remediation of contaminated water bodies; and the ecological floating island arrangement has certain landscape effects.

The invention relates to the technical field of ecological industry and especially discloses a comprehensive treatment system for coastal low-lying saline-alkali soil constructed on the basis of an ecological island. The comprehensive treatment system for the coastal low-lying saline-alkali soil constructed on the basis of the ecological island takes a moderate saline-alkali soil section in a coastal area as an implementation object and is characterized in that (1) on the coastal low-lying land, an engineering soil preparation measure is taken for constructing a 'H' shaped water channel; (2) a biological pool is arranged in an '-' shaped water channel and platform fields are constructed on the two sides; (3) strip fields which are parallel to the '-' shaped water channel and are in corresponding length are arranged on the peripheries of the platform fields; (4) the strip fields are constructed on the outer side of the two 'I' shaped water channels. The comprehensive treatment system provided by the invention has the advantages of simple configuration, eco-environment protection, capability of effectively accumulating low-lying land water, capability of effectively utilizing water, high survival rate of the plant, excellent salt-reducing soil-improving function, obvious ecological effect in protecting forest and capability of obviously increasing crop yield.

The invention belongs to the technical field of environmental geotechnics and discloses a method for building an artificial ecological island through river and lake silt. The method for building the artificial ecological island through the river and lake silt includes the steps that cofferdam steel plates are arranged along the design boundary line of the artificial ecological island; river and lake desilting is carried out, and the river and lake silt is obtained; large-particle solid materials such as gravel in the river and lake silt are screened out, and mixed slurry is formed by adding modifying agents into screened slurry; modified mud cakes are formed by dehydrating the mixed slurry; a gravel layer is formed by backfilling a cofferdam with the large-particle solid materials such as the gravel in a paving mode, and water in the cofferdam is discharged; a gravel cushion layer is formed by conducting in-situ solidification treatment on the gravel layer in the cofferdam; the modified mud cakes are piled on the solidified gravel cushion layer in a filling mode; and revetment bricks are used for building a slope in the position, above the gravel cushion layer, of an island body. The filling method for the artificial ecological island has small pollution to the river and lake environment, high adaptability, erosion resistance and high structural reliability.

The invention discloses a water treatment system for internal-circulation running-water cultivation in a pond. The water treatment system comprises a purification area (1), ecological islands (2), a breeding water tank (3), an aeration and water pushing area (4), a sewage collecting and drainage area (5), a working platform (6) and a pond (8). The long-strip-shaped ecological islands which are distributed in a staggered mode are arranged in the purification area, and aquatic plants are planted on the upper surfaces of the ecological islands and on the shallow water areas of side slopes of theecological islands, so that on one hand, water can be purified, on the other hand, water discharged from the breeding water tank can only flow along an "S-shaped" water path, a situation that the sewage is not fully purified and directly flows into the breeding water tank in a mode of "cutting a corner" is avoided, and meanwhile, a situation that dead water areas appear in a part of regions in thepond is avoided. The ecological islands are mainly prepared by piling the bottom mud of the pond, so that construction cost is low, the volume of the pond cannot be reduced, and shallow water areas and deep water areas can also be formed in the purification area, wherein the shallow water areas are beneficial to growth of aquatic plants, and the deep water areas can prevent water temperature frombeing too high in summer. Therefore, functions of purification areas of the pond can be enhanced, and the water purification effect can be improved.

The invention provides an artificial ecological island capable of being rapidly assembled for a medium-sized open water area and a construction method of the artificial ecological island. The tail endof a steel cylinder assembly is inserted into the water bottom riverbed, a reinforced concrete cylinder is installed on the steel cylinder assembly, and the steel cylinder assembly is filled with steel cylinder filler; the top end of the steel cylinder filler is covered with water-impermeable non-woven fabric used for preventing erosion and loss of the steel cylinder filler, a hollowed-out section is formed in the middle of the reinforced concrete cylinder, and reinforcing ribs for reinforcing the strength of the hollowed-out section are arranged on the hollowed-out section; and the reinforced concrete cylinder is sequentially filled with two-piece stone, block stone, broken stone, a water-permeable geosynthetic material, medium coarse sand and tillage planting soil from bottom to top, and the block stone section and the broken stone section are located in the hollowed-out section. The ecological island can provide a medium for water purification of the water body and break through the height limit of an inland waterway, the use of large hoisting equipment is avoided, and the artificial ecological island is quickly and safely constructed.

The invention discloses a landscape water-body water-quality maintaining and self-purifying system integrating functions of landscape and biological ecological restoration. The system comprises an artificially intensified water quality purifying system, a biological control system and a water circulation system, and is used for ecological maintenance and self-purification of the campus landscape water body. By the artificially intensified water quality purifying system, mechanisms of water circulation and purification are utilized, so that the aim of purifying the landscape water-body water-quality is fulfilled; the artificially intensified water quality purifying system comprises an aeration oxygenation system, an ecological floating bed and a multi-element combined artificial wetland; the biological control system consists of an ecological island and an aquatic animal and plant system and is used for assisting the artificially intensified water quality purifying system to further improve the self-purification capability of a landscape water-body ecological environment; and each system is circularly connected with a processing unit by a water pump and gravity flow. By the landscape water-body water-quality maintaining and self-purifying system, the impact resistance and the water-body water-quality purifying capability of the campus landscape water-body ecological environment can be improved, and the problems of the pollution to the campus landscape water-body and landscape degradation are solved. The landscape water-body water-quality maintaining and self-purifying system is low in cost, low in investment, low in energy consumption, good in purifying effect, and free from secondary pollution.

A floating ecological island is composed of a floating skeleton and various kinds of plant growing in said skeleton. Said floating skeleton consists of a checked top layer made of polyethene or polypropene and containing soil or growth matrix in its checks, a middle bamboo joist layer made of bamboo strips and with multiple holes and a bottom layer made of foam plastic board with multiple holes.

The invention discloses an ecological purification system of a landscape water body, which comprises an artificial ecological island arranged in the landscape water body and used for purifying the water body, wherein the artificial ecological island comprises artificial wetland (1); a water gathering tank (2) is excavated in the middle of the artificial wetland (1); a biological carrier structure(3) surrounds the periphery of the artificial wetland (1) and is internally provided with a water pumping device; the water pumping device is connected with a water delivery pipe (8); and the water delivery pipe (8) conveys a purified water body (6) in the water gathering tank (2) to the landscape water body (4) at the periphery of the artificial ecological island. The system can perform uninterrupted and circular ecological purification on the landscape water body and monitor water quality in real time, is low in investment cost and good in water purification effect and has a non-pollution and ecological purification effect on the landscape water body.

The invention discloses a shallow and narrow riverway ecological management system based on an artificial ecological island and a construction method thereof. A plurality of artificial ecological islands are constructed in a riverway, a submerged plant planting blanket is laid on a riverbed of the riverway, and an aeration device is arranged; wherein an island body of the artificial ecological island is an annular body with a hollow middle part, a water flow channel supporting structures are arranged at intervals in a staggered manner at the bottom of the annular body, and water flow is filtered and purified through a filter material matrix filled in the annular body; in addition, an aeration point is arranged at the hollow position of the annular body, and air is pumped into the water body in the part, so that the content of dissolved oxygen in the water body can be increased, and the water quality can be improved; emergent aquatic plants and floating-leaved plants are planted on thebiological matrix soil layers at the upper half part and the annular top of the annular body, and meanwhile, a submerged plant planting blanket on which submerged plants are cultivated is paved on a riverbed, so that the aquatic plants can be used for further purifying a water body and beautifying an island body.

The invention discloses a novel river regulation ecological island and relates to the technical field of environmental governance. The novel river regulation ecological island comprises a water inlet zone, a treatment zone and a water draining zone, wherein the treatment zone comprises an ecological board, an aeration system and a refluxing system; the ecological board is located at the upper end of the treatment zone; the aeration system is located at the lower end of the treatment zone and comprises an aeration pipe and an aeration disk. The aeration system can be aerated by using solar energy, so that operation expanses are reduced; the refluxing system comprises a refluxing pump, a refluxing pipe and a discharging pipe; the number of the ecological islands can be reduced by using a recycling system on the premise of not reducing organic matters and an ammonia-nitrogen effect, therefore, investment cost is lowered.

The invention relates to an ecological floating island sewage treatment aerobic pond. The aerobic pond comprises a pond body, ecological islands, an aeration pipe and an air blower, the pond body is a reinforced concrete square pond, slide grooves are formed in the top ends of the two pond walls in the length direction of the pond body, multiple track beams are arranged in the width direction of the pond body, the track beams make movements along the slide grooves, ecological floating islands are arranged on suspension racks of two adjacent track beams, the ecological islands are arranged on the water surface in the pond body, the aeration pipe is arranged on the bottom of the pond body, the aeration pipe is arranged in a communicating mode on the air blower arranged outside the pond body. By the ecological floating island sewage treatment aerobic pond, slide grooves and track beams are arranged on the sewage treatment pond, the track beams make movements along the glide grooves, the ecological islands are arranged in a suspended mode by two adjacent track beams in the sewage treatment pond, at the same time, air is conveyed into an aerobic pond using the principle of aeration, the oxygen required by aerobic reaction is supplied by the oxygen produced by aeration and the plants on ecological islands, and the needs of aerobic reaction are met.

The invention discloses a method for evaluating the rationality of river ecological island plant selection based on AHP, and the method comprises the following steps: building a hierarchical structure model which comprises a target layer, a decision layer and a factor layer; determining the relative weight of the influence degree of an evaluation factor on a corresponding decision factor through employing an AHP analysis method, and determining the relative weight of each decision factor on the influence degree of the target layer; evaluating and scoring each evaluation factor to obtain a factor evaluation score, and obtaining a plant total score L according to the factor evaluation score, the relative weight of the influence degree of the evaluation factor on the corresponding decision factor and the relative weight of the influence degree of the decision factor on the target layer, wherein the higher the total plant score L is, the higher the reasonability of the river ecological island to select the plant is. According to the method, the unified evaluation model can be established to scientifically and accurately evaluate the rationality of the alternative plants, the plant design efficiency of the ecological island is improved, and the design period is shortened.

The invention discloses a submerged ecological island. The submerged ecological island is composed of three parts, namely a frame, a planting cage and a fixing component, wherein the frame is composed of two parts, namely PVC frame tubes (1) having the diameter of 300mm and PVC framework tubes (2) having the diameter of 200mm; the planting cage is formed by use of a stainless steel mesh (6) having the aperture of 10mm; and the fixing component is composed of two parts, namely a fixing rope (4) and a fixing pillar (5). The four edges of each PVC frame tube (1) are all 3000mm, and the four edges are hermetically communicated with each other as a whole to form a hollow structure; each PVC framework tube (2) is 2400mm long, and the PVC framework tubes (2) are hermetically connected with the PVC frame tubes (1) by use of reducing three-way joints at the interval of 600mm; and the ecological island is suspended at 1000mm under the water surface. The submerged ecological island is suspended at 1000mm under the water surface without occupying the area on the water surface and affecting the photosynthetic reoxygenation efficiency of algae on the water surface; submerged plants grow so that the transparency of the water can be improved; the position of the ecological island in the water is relatively fixed without drifting under the disturbance of surface wind waves; and the submerged ecological island is high in stability without overturning.

The invention provides a coastal estuary wetland biodiversity protection construction method, relates to the field of wetland construction, and aims to construct an ecological water supplementing facility, establish a water quality purification area, an ecological circulating water system and a water diversion building and achieve partition dam widening. For a bird habitat improvement project, a bird habitat island, a bird foraging area, a fish habitat and a scirpus triqueter planting area are constructed according to terrain and topography, and the bird foraging area is communicated with thefish habitat; vegetation protection engineering is implemented, suitable plants are selected to establish a centralized plant ecological island with advantage distribution, and the original suitable environment is maintained; and for scientific research monitoring, a monitoring facility is built, monitoring is carried out to obtain biological and environmental indexes, and an observation facilityis built. Water surfaces with different widths and different depths are combined, the proportion of the water surfaces to the land is optimized, a diversified ecological system is built, excellent growth conditions are provided for different types of fishes and other aquatic animals and plants, the nutrition-level structure is enriched, and a food chain is optimized.

The invention discloses an agriculture and forestry wet composite ecological purification system. The system comprises composite ecological purification units such as an ecological hydroponic area, aclear water conservation area, an overwater forest area and a forest wetland area. Farmland drained water firstly enters the ecological hydroponic area and then enters the clear water conservation area, and part of the drained water serves as a farmland standby water source and part of the drained water enters the overwater forest area. Flooding-resistant tree species are planted in the overwaterforest area, ponds and wetlands are arranged, the ponds are connected through grooves, and the peripheries of the ponds are stacked to form ecological islands; effluent of the overwater forest area enters the forest wetland area, earthwork is properly excavated in a forest, and a multi-stage composite forest wetland formed by connecting ponds and reed wetlands in series is formed; the water outletpart of the forest wetland area enters the river channel. The system makes full use of forest land, wetland and other ecological spaces in an engineering area, constructs an agriculture and forestrywet composite ecological purification system, protects biodiversity, improves the service of the ecological system, and provides basic support for agricultural production and human activities.

The invention relates to the technical field of ecological environmental protection, in particular to an ecological island and reef with a sediment remediation function. The ecological island and reefcomprises a remediation belt, wherein the remediation belt surrounds the island and reef, and the remediation belt comprises a planting layer, a stabilizing layer, a water film layer, a transition isolation layer and bottom sludge in sequence from top to bottom; the bottom sludge is used for providing nutrition for plants; the sludge is isolated from the planting layer by the transition isolationlayer; the water film layer is used for ensuring that a water body which enters the planting layer does not contain foul gas; a planting foundation is constructed for the planting layer by the stabilizing layer; and the planting layer is made of emergent aquatic plants and submerged plants, various fertilizers which are beneficial to plant growth are released by the sludge under the decompositioneffect of biological stuffing, deodorization is performed through a water film and the stabilizing layer, the peculiar smell of water on a water surface is reduced, finally, nitrogen, phosphorus andthe like are fixed under the decomposition effect of various plants, and environment pollution is prevented, so that the ecological island and reef is constructed.

The invention discloses an ecological island type water purification filter dam for filtering and purifying urban river water, the water purification filter dam comprises a base built at the bottom of a river, left and right submerged dam sections built on the base, and a central ecological island section connected with the left and right submerged dam sections to form a whole, the submerged dam sections on the left side, the right side and the central ecological island section are formed by piling gabions filled with water purification filler, the crest elevation of the submerged dam sections on the left side, the right side and the central ecological island section is 10-20 cm higher than the normal water level, and stone stone steps for pedestrians are arranged on the tops of the submerged dam sections on the left side, the right side and the central ecological island section in the dam axis direction, and aquatic plants are planted on the ecological island section. The ecological island type water purification filter dam is easy to install, convenient to clean and capable of being repeatedly used, has a water purification function and a landscaping effect, is a technology integrating water purification, landscape improvement and ecological hydrophilicity, and has high application value.

The invention discloses an ecological bay channel based on a permeable dike. The ecological bay channel based on the permeable dike comprises the permeable dike (5) arranged between the upstream sideof an ecological island (3) and a river bank (7) of a river channel (1). An accommodating chamber (51) is formed downwards in the middle of the top of the permeable dike (5), and a plurality of artificial biological grids (51a) are arranged inside the accommodating chamber (51). The side wall of the accommodating chamber (51) is a reinforced concrete permeable wall (52), and an ecological floatingbed (55) is arranged at the top of the accommodating chamber (51) in a covering mode. The artificial biological gates (51a) are arranged at the bottom of the ecological floating bed (55) in a hung mode. A bay channel body (2) is separated from a main channel body of the river channel (1) by the permeable dike (5) formed by piling up stone, and the water level of the bay channel body (2) is regulated by controlling the elevation of the top end of the permeable dike (5). During the flood season, flood water overflows to the bay channel body (2) through the top end of the permeable dike (5), andthe flood regulation and storage total amount of the river channel (1) can be increased; and after raining, since water is blocked by the permeable dike (5), the water velocity in the bay channel body (2) is much lower than that in the river channel (1), and a suitable place for aquatic animals to live and breed is provided.

The invention discloses a construction method and application of a coastal wetland protection and restoration system. Through micro-slope reconstruction, earth cutting is conducted in shoal water to construct an ecological island to provide a breeding place for summer residents; deep trenches are excavated around the island to provide a shelter for fishes in the dry season; and fresh water supplyand circulation are ensured to create a bird foraging habitat and a sheltered habitat, and thus a bird conservation effect is improved. According to the construction method and application of the coastal wetland protection and restoration system, a principle of using local materials is adopted, local soil is utilized to conduct dam surrounding and island building, and foreign building materials are not introduced, so that disturbance to a local environment due to introduce of the foreign building materials is reduced while the cost is saved, and good practical application value is achieved.