172 results about "Aquatic ecosystem" patented technology

The invention discloses an ecological restoration and purification method for landscape water environment which is characterized by comprising the following steps of (1) performing bottom mud sterilization and activation treatment; (2) splashing a microbial flora compound preparation; (3) reconstructing a submerged communities; (4) repairing an aquatic ecosystem food chain; and (5) performing aquatic ecosystem conservation management. According to the ecological restoration and purification method for the landscape water environment, a biological integrated control technology is applied, and the water purification effect is achieved by use of submerged plants; furthermore, decomposers, namely microorganisms in an ecosystem are fully utilized, and multiple types of aquatic animals are put in the aquatic ecosystem, so that the ecosystem food chain is perfected, various aquatic species promote and restrict one another, the whole riverway, lake, pond and wetland system is kept in dynamic balance for a long time, the original self-purification capability of the aquatic ecosystem is restored, and a long-term stable effect is achieved.

The invention relates to an in-situ biological-ecological recovery integrated system for an urban river water body. The in-situ biological-ecological recovery integrated system is capable of effectively preventing the problems of unqualified fluvial cross section water body and aquatic ecosystem damage and further improving the landscape effect. According to the technical scheme adopted by the invention, the method is as follows: close-to-nature riverside buffer zones are constructed on side banks of a river reach from upstream to downstream; the river reach, at which the close-to-nature riverside buffer zones are positioned, is internally and sequentially provided with a pretreatment unit, a first ecological floating bed unit, a first ecological filtration dam unit, an aquatic plant unit, a second ecological floating bed unit, a second ecological filtration dam unit, a biomembrane-enhanced purification unit including a plug-flow aeration unit, a habitat improvement unit and an aquatic organism functional group construction zone from upstream to downstream. The in-situ biological-ecological recovery integrated system does not need to occupy land area except for a riverway, is stable in treatment effect, does not influence drawing off of floodwater in the riverway, can be used for solving the problems of unqualified fluvial cross section water body and aquatic ecosystem damage and improving the landscape effect, and has great economical and social benefits.

A system and method for monitoring and controlling an aquatic environment thus regulating the aquatic environment and maximizing the stability of the aquatic ecosystem. This system uses sensor and data fusion algorithms to perform system anomaly analysis and predictive failure diagnostics based on the output of sensors associated with the aquatic environment control devices. Based on the system anomaly analysis and / or predictive failure diagnostics, the system may continuously adjust the system parameters to maintain an efficient and stable aquatic environment, alert local or remote monitors of failed or impending failure of control devices. In addition, the system may present the system anomaly analysis and predictive failure diagnostics information at a local or remote location to enable the monitor to address any problems presented in situ.

The invention relates to a small electric remote control aquatic weed harvester. Aquatic weeds grow in natural or artificial shallow water areas widely and are harvested substantially manually or by large manned aquatic weed harvesters, and the aquatic weeds in narrow, complex and scattered water areas are difficult to harvest effectively. The invention is mainly characterized in that the small electric remote control aquatic weed harvester is driven by rechargeable batteries, the work of a motor is controlled by a remote control device, a catamaran consisting of two boat-shaped floating drums can be ensured to complete the actions of advancing, retreating, turning left, turning right, starting a cutting knife and stopping in water, and the whole equipment can be assembled and disassembled and cutting depth can be adjusted. The small electric remote control aquatic weed harvester has the advantages of mechanical transmission, small size, flexible operation and light draught, can collect floaters in water, utilize clean energy without pollution and greatly improve the efficiency of harvesting various submerged plants, floating plants and emerged plants, is particularly suitable for harvesting and cleaning the aquatic weeds in the natural or artificial water areas of small and medium sizes, maintains health of aquatic ecosystems and builds a beautiful and clean water body environment.

This invention provides a filtration system for home aquaria that uses a closed-circuit pathway having a surface that contacts a flow of water moving between a tank inlet and tank outlet. The surface allows for algal growth thereon, and for transmission of light thereonto so as to provide photosynthetic energy to the algae. The algae acts to scrub contaminants (nitrogenous compounds, for example) as part of its growth cycle, and thereby purify the water. Additional components, such as injected air and filter media can also be provided to the water circuit to enhance algal growth, oxygenate the water and remove particulates. In an illustrative embodiment, the surface is transparent or translucent and a light that transmits appropriate wavelengths (for example, full-visible spectrum) is placed in proximity to the surface.

The invention discloses a small-sized float grass harvester. In the small and medium-scaled water ecosystem, the existing float grass harvesting is all operated manually, with the problems of high labor intensity, low working efficiency, etc. The small-sized float grass harvester of the invention is characterized in that the harvester comprises a boat body, a diesel engine, two paddle wheel with paddle boards at both sides of the boat body, a left side cutter, a right side cutter and a fore cutter arranged at the bow of the boat, a suspending frame adjusted by a handle through ropes, a delivery device and a mechanical transmission mechanism. The small-sized float grass harvester of the invention has the advantages of mechanical transmission, small size and stable and flexible boat body, needs small driving force and can significantly improve the speed to cut submerged plants and replace the manual harvesting. The small-sized float grass harvester of the invention is applicable to the harvesting of float grass in the small and medium-scaled water ecosystem so as to achieve the goals of biological control and water purification.

The invention discloses a multistage assisted-driving type ecological fishway facility and an operation method of the facility, relates to the field of fish passing buildings and water conservancy and hydropower engineering ecological environments, and discloses a fishway building and fish passing control method suitable for key water control projects with middle and high water heads. The multistage assisted-driving type ecological fishway facility comprises a plurality of stages of fishway units which are distributed in a step mode, a fishway assisted-driving system, a bionic river system, a fishway energy dissipation system and a fish luring monitoring system. When the fishway facility operates, the fishway facility is used in cooperation with a computer automatic control system, and the aim of fish-class step-by-step intelligent assisted-driving upstream sailing is achieved. The fishway facility and the operation method of the fishway facility have the advantage that the facility can assist fishes in passing through the key water control projects with the middle and high water heads to run and sail upstream, and consumed physical ability is small, and the fishway facility is ingenious in design, high in automation degree, capable of greatly improving the fish passing effect of the fishway, and beneficial to natural fishery resource protection, and guarantees continuity and diversity of a river aquatic ecosystem.

A system and method for monitoring and controlling an aquatic environment thus regulating the aquatic environment and maximizing the stability of the aquatic ecosystem. This system uses sensor and data fusion algorithms to perform system anomaly analysis and predictive failure diagnostics based on the output of sensors associated with the aquatic environment control devices. Based on the system anomaly analysis and / or predictive failure diagnostics, the system may continuously adjust the system parameters to maintain an efficient and stable aquatic environment, alert local or remote monitors of failed or impending failure of control devices. In addition, the system may present the system anomaly analysis and predictive failure diagnostics information at a local or remote location to enable the monitor to address any problems presented in situ.

The invention discloses a black-odor river sewage treatment method which includes the steps: S1, arranging a drain grating at the upstream of a river and primarily intercepting sewage; S2, arranging a plurality of bio-filters in the river and adsorbing suspended matters in the sewage; S3, arranging a plurality of microporous aeration devices at the bottom of the river and taking out gas such as carbon dioxide and ammonia gas from water by laminar flow circulation; S4, placing compound microorganisms into the water to enhance water remediation capacity, improve water quality and decrease deposition of organic matters; S5, arranging artificial wetlands on two sides of the river and planting aquatic plants into the wetlands to improve purification effects; S6, arranging a carbon fiber aquatic plant matrix at the tail of the river to further adsorb suspended matters in tail water; S7, arranging a rubber dam at the downstream of the river, automatically regulating water level, enlarging the channel storage capacity of the river and prolonging sewage retention time. The method persists in integrated technology for restoring and treating a damaged aquatic ecosystem, and can be widely applied to the field of water environment treatment and ecological remediation.

The invention relates to a treatment device for a eutrophic water body, in particular to a combined bio-floating bed. The bio-floating bed comprises a bed body which is formed by connecting a plurality of floating bed single bodies and an aeration cavity in the bed body, wherein an aeration device is arranged in the aeration cavity. According to the combined bio-floating bed, a minitype aquatic ecosystem is built through increasing dissolved oxygen in the water body, introducing aquatic plants and increasing population and quantity of microorganism, nitrogen and phosphorus nutrients in the eutrophic water body in an urban landscape can be stably and effectively removed, and a new process is provided for water quality preservation in the northern urban landscape water body which takes tail water of an urban sewage treatment plant as the main nourishment source.

The invention relates to an experimental device for generating over-saturated general dissolved gas by high-speed jetting air doping, comprising a water column, a flowmeter, an air compressor, a general dissolved gas tester, a first valve, a second valve, a third valve, a water pump, a water flow nozzle and a gas nozzle, wherein the air compressor is connected with the flowmeter connected with the gas nozzle through the second valve, and the gas nozzle is arranged in the water column; one end of the water pump is connected with the bottom of the water column, the other end of the water pump is connected with the water flow nozzle through the first valve, and the water flow nozzle is arranged in the water column; the third valve is installed at the bottom of the water column; and the general dissolved gas tester is inserted to the water column when testing. The experimental device can realize the control on the measurement of main physical conditions affecting the generation of the over-saturated general dissolved gas, such as the jetting flow speed of a water body, air-doped amount, pressure, water depth and the like, thereby achieving the purpose of quantitatively researching theair-doped jetting flow of the over-saturated general dissolved gas; and the experimental device has the important promoting function on protecting the aquatic ecosystem of rivers and establishing environmental-friendly hydraulic engineering.

Relating to the field of water environment ecological restoration, the invention provides a high efficiency combined restoration technology for urban and rural river polluted river water bodies. The invention comprehensively utilizes a solar energy micropore aeration technology, an ecological base, a microorganism-enzyme composite reinforcement restoration technology, an ecological floating island, aquatic animal throwing and other methods to reduce nitrogen, phosphorus and other organic matters and pollutants in water bodies, thus purifying river water bodies, optimizing the aquatic ecosystem, and simultaneously achieving a landscape optimizing effect.

The invention discloses an ecotype prefabricated building bock bank revetment. The upper part is built by dryly laying plant type cavity building blocks, and the lower part is built by dryly laying fish nest type cavity building blocks; the plant type cavity building blocks are built into a stepped bank revetment and are provided with top-to-bottom cavities; the cavities of the plant type cavity building blocks are filled with an earth material in which plants are planted; the fish nest type cavity building blocks are provided with run-through cavities in water flow direction and are provided with holes on the water side; the fish nest type cavity building blocks and the plant type cavity building blocks are made of water-permeable concrete or water-impermeable concrete; and when the cavity building blocks are made of the water-impermeable concrete, the back side is provided with water-permeable holes. The bank revetment has a certain structural strength, is resistant against scour and has a protection effect on the revetment; the cavity structure of the building block meets an ecological design principle and contributes to plant growth and small organism propagation; and the building blocks are water-permeable, are used for communicating an aquatic ecosystem with a land ecosystem and have a certain natural purification effect on water pollution.

The invention discloses a target ring-typed technology for ecologically restoring natural drinking water source fields and improving water quality. The composition of a target ring-typed functional area is that the water intake of a water source field is the target center, the concentric circles are set as per the same or different radiuses, according to the functions of different material fencing-parting or larallel single bank arrangement, the structure area of the water source fields which are independent of and associated with each other is restored ecologically and operated. The invention integrates the technologies such as drain grating and wave elimination, alga control, basic environment improvement and micro ecological environment restoration and the like, by the improvement of the environmental conditions such as stormy waves, bottom characteristics, transparency and the like, the aquatic vegetation of lakes and aquatic ecosystem are restored, the self-cleanness ability and stability of aquatic ecosystem are improved, and the purpose of continuously improving the water quality of water source fields is finally realized.

The invention provides a method for restoring water bodies in black and stinking rivers and relates to a method for eradicating the black and stinking problems of rivers and restoring the water bodies. According to the method, the water bodies of the black and stinking rivers are restored by utilizing an in-situ treatment manner based on a bionic water plant- microbe preparation-chub-clam-earthworm composite system and a biological oxygen-enriching technique. The method has obvious effect of removing nitrogen and phosphor nutrient salt and has a positive enhancement effect on the aquatic ecosystem of the river. The method is an effective method for restoring the water bodies in black and stinking rivers, and has the advantages of simpleness in component form, low cost, low operating expense, no secondary pollution and safety.

The invention provides an ecological floating bed and a method for recovering a eutrophic reservoir aquatic ecosystem by utilizing the floating bed. The ecological floating bed comprises a floating bed body located on the water surface, a net cage which is located at the lower part of the floating bed body and a hanging cup located in the net cage, wherein the floating bed body is formed by combining and connecting a plurality of floating blocks; the net cage is of a net-shaped structure and the upper end of the net cage is connected with the bottom of the floating bed body; the hanging cup is connected with the bottom of the floating bed body through a hanging rope; the floating bed body is used for culturing aquatic plants; the net cage is used for internally culturing aquatic animals; the hanging cup is used for internally culturing submerged plants; furthermore, the invention provides the method for recovering a water ecosystem of a eutrophic water reservoir by utilizing the floating bed. By adopting the ecological floating bed and the method for recovering the eutrophic reservoir aquatic ecosystem by utilizing the floating bed, the ecosystem above the water surface can be effectively recovered and ecosystem reconstruction is carried out on the water body in a certain water depth range below the water surface, so that a complete water body ecosystem is easy to recover and the comprehensive utilization of water body resources is realized.

The invention relates to a microbiological integrity index-based wetland ecosystem health evaluation method. The method comprises the following steps: 1) selecting multiple wetlands which can completely reflect the overall water quality and the aquatic ecosystem condition in the to-be-evaluated area, adopting the multiple wetlands as sampling points, and measuring 13 indexes; 2) filtering water samples, shearing a filtered filter membrane, transferring the samples into a crushing tube for DNA extraction, and carrying out PCR (polymerase chain reaction) amplification on obtained DNA samples; distinguishing the samples throughdifferent barcode sequences, distributing the total sequencing reading to all the samples, removing fuzzy bases included in the sequences, removing sequences with the primer mismatching conditionand containing more than six basic groups at the same time, filtering out low-quality sequences, and removing a primer sequence; 3) applying the weighted average regressionmethod to obtainan optimal value of each classification unit, and then determining the sensitive or tolerance classification unit of each key environmental factor. According to the method disclosed bythe invention, based on the biological parameter distribution range, the correlation analysis and the discrimination capability analysis, an M-IBI-based wetland ecosystem health evaluation system isobtained.

The invention relates to a combined biomanipulation method for water-area ecological restoration. The combined biomanipulation method includes the steps that growth of phytoplankton in a system serves as starting; zooplankton is transplanted to the water body, and algae in the water body are controlled; aquatic vegetation is planted; after aquatic plants successfully grow, freshwater shrimps, caridina, small fishes, small carnivorous fishes, large carnivorous fishes and molluscs start to be put. By means of the combined biomanipulation method, all the key technologies in biomanipulation are integrated, food chains in the water-area ecological system are entirely and systematically rebuilt, the complexity of biocenosises is prolonged and improved, the stability of the system is improved, and the fixing function and the nutriment circulation function of the system are achieved.

The invention discloses a rapid self-forming method of a vallisneria natans underwater meadow, relating to a large-area and large-scale water environment biological treatment technique. The method comprises the steps of: (1) collecting fertile lake mud, clay and degradable fibres; (2) preparing a vallisneria natans culture substrate according a volume ratio of the lake mud, the clay to the degradable fibres of 40: 40: 20 and filling the culture substrate in a detachable mould which is 60 cm in length, 30 cm in width and 8 cm in height; (3) putting the mould in a cement pond which is good in illumination conditions and has adjustable water level; (4) collecting healthy and strong winter buds of the vallisneria natans and sowing the buds in the culture substrate; and (5) adjusting the waterlevel in the cement pond duly according to growth height of the vallisneria natans so that the vallisneria natans can grow rapidly and thereby are branched and combined to form the meadow. The rapid self-forming method of the vallisneria natans underwater meadow disclosed by the invention can produce plenty of vallisneria natans meadows in a large scale, is convenient for implementation and construction, and can rapidly and efficiently recover submerged plants in a nutrient-rich shallow lake so that a foundation for further optimizing aquatic plant community is provided, thereby aquatic ecosystem structure is improved and ecological system stabilization is promoted.

The invention discloses a rapid field planting method for eel grass as a submerged plant, belonging to the technical field of ecological environment engineering. The method comprises following steps of (1) selecting flourishing eel grass, wherein the height of the flourishing eel grass is 15 cm to 30 cm; (2) fixing the eel grass to the middle part of a fixing rod in parallel by using a fixing rope; (3) sheathing the upper part of the fixing rod with a jointed bamboo pole by using a hollow bottom end, perpendicularly inserting the fixing rod into the bottom of water, and pressing the lower part of the fixing rod into a substrate to be fixed; and (4) perpendicularly pulling the bamboo pole out, and fixedly planting the eel grass on the substrate. The invention has advantages of simpleness, low cost, obvious yield effect and capabilities of efficiently improving the water quality of the water body and enhancing the transparency of the water body, and is suitable for the recovering project of the diversity of aquatic vegetation and aquatic plants in lakes, or the ecological reconstruction project of an aquatic ecosystem of the lakes.

The invention relates to the field of pollutant controlling, and specifically relates to a vegetable tannin algae inhibitor and a method for inhibiting the overgrowth of algae in eutrophicated fresh water areas. The vegetable tannin algae inhibitor provided by the invention comprises one or more components selected from gentisic acid, ellagic acid, and tannic acid. All the components of the algaeinhibitor can be obtained through artificial synthesizing, and are cheap in price. The preparation method of the complex agent is simple, and has a strong operability. With the algae inhibitor, secondary pollution to the environment is not caused, water areas can be prevented from water bloom, and the stability of aquatic ecosystems can be maintained. With the complex algae inhibitor provided by the invention, over dose of single component can be effectively avoided, such that the damage to the aquatic ecosystems can be prevented, and various degrees of drug resistances gradually generated inalgae caused by long-term and repeated usage of single algae inhibitor can be effectively overcome or retarded. Also, with the algae inhibitor, algae inhibiting capacity and broad spectrum property of the algae inhibitor can be effectively improved.

The invention discloses a method for identifying ecological risks of pesticides in water body, and belongs to the field of ecological risk identification. The method comprises the following steps: determining the types of the pesticides in the water body; screening representative biological species in an aquatic ecosystem; acquiring toxicity data of the pesticides in an area to be identified; andcalculating a concentration value HC5 for protecting 95 percent of the species in the aquatic ecosystem by a probability risk assessment method; calculating risk quotients of various pesticides and performing risk prioritizing; applying the toxicity data to the probability risk assessment method to calculate the total level of the ecological risks of the pesticides in the area to be identified; and identifying according to a result. The method combines the conventional risk quotient method and probability risk assessment method, and realizes the quantification of the total level of the ecological risks of the pesticides in the water body by screening the representative biological species in the aquatic ecosystem and utilizing less toxicity data so as to provide decisive basis for protecting the aquatic ecosystem.

The invention belongs to the filed of application of reinforcing dams of riverways, lakes and reservoirs, and discloses an environmental-friendly ecological reinforcing dam system which comprises plant mesh bags arranged in the low water area of a riverway, planting soil bags laid on a slop falling-and-rising area, and ecological concrete blocks. According to the invention, the basic functions of stabilizing the riverways and preventing water and soil loss are realized, and an excellent aquatic ecosystem is also formed, so that the ecological diversity and the purification performance of water quality are facilitated.

The invention belongs to the technical field of aquatic ecosystem recovery, and particularly discloses a southern eutrophicated city lake aquatic ecosystem recovery method. The method comprises the following steps: planting wild celery and breeding java tilapia in the lake based on removing original fishes in the lake and improving the transparency; and adjusting the quantity of the java tilapia so as to keep the balance between the wild celery and the java tilapia. The method makes use of the characteristic of the perennial growth in the southern areas of the submerged plant wild celery to keep a clear water body perennially. As the java tilapia eats attaching organisms and the leaves of the wild celery have characteristics, the length of the leaves of the wild celery is controlled and consequently the leaves of the wild celery cannot grow to the water surface to impact the landscape on the lake surface. Simultaneously, the quantity of the java tilapia is artificially controlled so as to keep the relative balance between the java tilapia and the wild celery, thereby reaching the aims of avoiding the waste of labor and material resources caused by aquatic weed salvaging, and bringing about certain economic effects through the harvested java tilapia.

The present invention discloses a method for controlling water eutrophication of the 'artificial lagoon' of the Jinshan city beach, which comprises the following steps: firstly, according to the theory of trophodynamics, aquatic organisms are put into the water of the 'artificial lagoon'of the Jinshan city beach so as to adjust and control the aquatic ecosystem structure, and alga, polychetes, conches, shrimps, crabs and fishes are put into the water sequentially; and secondly, the water quality is detected and the aquatic ecology effect is evaluated. The method restrains the growth of microscopic algae, improves the water quality, improves the circulation rate of nitrogen and phosphorus elements in the ecosystem, enables more nutritive salt to be deposited in the consumers of each trophic level, and controls the growth of the phytoplankton in terms of the aspect of bottom-up effect (nutritive salt) and the aspect of the up-bottom effect (food chain), thereby achieving the aim of controlling the water eutrophication of the 'artificial lagoon' of the Jinshan city beach.

The invention provides a black odorous river course ecological treatment system which comprises an infiltration island, submerged plants and an internal electrolysis substrate, wherein the internal electrolysis substrate comprises a composite substrate cushion layer and an internal electrolysis reaction filler; and the composite substrate cushion layer comprises gravel, haydite and zeolite. The treatment method comprises the following steps: establishing the infiltration island; growing the submerged plants in the restoration river reach; and laying the composite substrate cushion layer on the riverbed of the river course, and adding the internal electrolysis reaction filler into the substrate cushion layer to complete the laying of the internal electrolysis substrate. According to the black odorous river course ecological treatment system and treatment method thereof, the submerged plants are utilized to perform the functions of purifying water; and the purification of the infiltration island and the reinforced purification of the internal electrolysis substrate are utilized to improve the oxygen environment in the river course. The system quickly decomposes, absorbs and converts the black odorous substances, enhances the dephosphorization efficiency, can quickly improve the black odorous phenomenon of the water body, and also has an active promotion action on the aquatic ecosystem of the river course.