1351 results about "Aquatic organisms" patented technology

Controlled release compositions of matter are disclosed comprising complexes for treating a population of one or more aquatic organisms in a column of water. The complexes comprise at least one system wherein the system comprises at least one bioactive agent as a component selected for treating a population of aquatic organisms, at least one carrier component, and at least one coating component for regulating the controlled release rate and release profile of the bioactive agent in water or at least one bioactive agent and one joint-function component that can serve as both a carrier and coating to regulate the controlled release rate and release profile of the bioactive agent in water, with or without optional binder components and / or additional formulation materials. The components are selected to sink or float so that the complexes will permeate and / or remain in any planar or volumetric segment of a water column for a period of time that is sufficient to effectively treat a population of aquatic organisms. Methods for treating a column of water are also disclosed which comprises delivering the compositions to a column of water or to a dry preflood area (pretreatment) that will develop in a column of water or a flood area. The composition and process can also be used to treat terrestrial organisms.

A phospholipid extract from a marine or aquatic biomass possesses therapeutic properties. The phospholipid extract comprises a variety of phospholipids, fatty acid, metals and a novel flavonoid.

The invention provides a shrimp-fish-shellfish-alga multi-unit culture and aquatic organism regulation system thereof. A shrimp culture zone, a fish culture zone, a shellfish culture zone, a large scale alga cultivation zone, a probiotics and microalga culture zone, a water processing zone and an emergency drainage system are arranged in a closed water circulation culture system, wherein the culture water circulates in different culture and water processing units. As the water circulates in different culture units and is utilized in multiple levels by various aquatic organisms of different trophic level and ecological niche, the system gives the various aquatic organisms full play to the positive bait resource complementarity, prevents the aquatic organisms from directly competing on living space and dissolved oxygen and reduces the mutual damage caused by organic remains and metabolic waste, achieves the 'self-modification' and 'biomanipulation' of the culture environment, enables the environment itself to recover from the pollution in culture process, and decontaminates the seawater culture environment.

A lighting assembly for enhancing the growth of aquatic life in an ecosystem and method of enhancing the growth of aquatic life in such an ecosystem. The assembly includes a vessel submerged within water of the ecosystem. A substrate is disposed within and surrounded by the vessel and provides electronics to provide a conditioned current to a plurality of light emitting diodes also contained on the substrate. The light emitting diodes emit light within the water of the ecosystem that provides for growth, not only in a larger volume of the ecosystem, but in addition enhances the growth of the aquatic life.

The invention discloses a method for removing water eutrophication, which comprises the following steps of: investigating a community structure of aquatic organisms in water body, and finding a missing link or broken link in a food chain according to an investigation result; stocking predacious fishes in the water body, removing small trash fishes and herbivorous fishes from the water body by adopting a medicament mode or a manual fishing mode, and regulating the community structure of the fishes in the water body; planting submerged plants, floating plants and emergent aquatic plants in the water with the depth of 0 to 1.5m; and stocking filter-feeding fishes, filter-feeding shellfishes, detritus feeding benthonic animals and herbivorous fishes in the water body. The method for removing water eutrophication can realize the removal of the water eutrophication and ecological restoration for large-scale water body of which the parameters cannot be manually controlled, effectively inhibit the outburst of algal bloom and keep the stable quality of the water body.

A controlled eutrophication system and process are disclosed. The system includes the combination of a partitioned aquaculture system in conjunction with an anaerobic digester. Wastewater containing pollutants, such as nitrogen and phosphorus, are fed to the partitioned aquaculture system. Algae within the system converts the pollutants into algal biomass. Fish populations, in turn, control the algal populations. The fish populations may then be periodically harvested for human or animal consumption. A polishing chamber is contained in the system in which aquatic organisms remove substantial amounts of the algae from batch fed additions of water. The water is then discharged to an external water source containing virtually no pollutants. In one embodiment, the biomass excreted by the aquatic organisms in the system are collected and fed to a digester. In the digester, the biomass is converted to a hydrocarbon gas and collected for its fuel value, while the liquid fraction is collected for its fertilizer value.

An automated biomonitoring system for monitoring water quality includes an exposure chamber for housing an aquatic organism having ventilatory behavior and body movement sensitive to water quality. Electrodes capture electrical signals produced by the organism during its ventilatory behavior and body movement, and a controller responsive to signals from the electrodes determines one or more ventilatory parameters based on the signals. The ventilatory parameters are compared with corresponding thresholds to determine when the water to which the organism is exposed has caused physiological stress to the organism. The signals captured by the electrodes may be corrected for variations in water conductivity so that the signals processed by the controlled are not influenced by conductivity.

An antifouling paint composition comprising an enzyme, such as endopeptidase, Subtilisin (EC 3.4.21.62) and Alcalase(R), and a rosin compound, wherein the enzyme is effective to reduce or prevent fouling by aquatic organisms of a surface coated with the composition. Also disclosed is a method for preventing fouling of a surface by aquatic organisms.

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 room-temperature curable organopolysiloxane composition is provided, which includes (A) an organopolysiloxane with the terminals blocked with a hydroxyl group, a hydrolysable group, or both these types of groups, and (B) an organosilicon compound containing a hydrolysable group, a partial hydrolysis-condensation product thereof, or a mixture of the two, and (C) a polysiloxane containing an oxyalkylene group bonded to a silicon atom via, for example, a C—C—Si linkage. Application of this composition to an underwater structure is able to generate an antifouling coating that is effective in preventing the adhesion and growth of aquatic organisms on the surface of the underwater structure, and displays superior long term endurance of this antifouling effect.

An automated biomonitoring system for monitoring water quality includes an exposure chamber for housing an aquatic organism having ventilatory behavior and body movement sensitive to water quality. Electrodes sense electrical signals produced by the organism during its ventilatory behavior and body movement, and a controller responsive to signals from the electrodes determines a plurality of ventilatory parameters based on the signals. The ventilatory parameters are compared with corresponding thresholds to determine when the water to which the organism is exposed has caused physiological stress to the organism.

One embodiment of an apparatus and method for treating agricultural animal wastewater that costs less to build, is easy to operate, and requires little energy input. The method employs natural systems for wastewater treatment; an initial anaerobic digestion treatment followed by batch floating aquatic plant treatment. The batch floating aquatic plant treatment of effluent and subsequent batch discharge provides increased control of the treatment process. Opportunistic collection and use of biogas and floating aquatic biomass results in additional benefits. The apparatus reduces the cost and land area required for the system by subdividing a lagoon into an anaerobic digestion treatment zone below the apparatus and a floating aquatic plant treatment zone above the apparatus. In addition, the apparatus is disposed in the lagoon in such a way that it facilitates the collection of biogas evolving from anaerobic digestion treatment beneath the apparatus by diverting it to areas to be collected.

System and methods for monitoring the growth of an aquatic plant culture and detecting real-time characteristics associated with the aquatic plant culture aquatic plants. The systems and methods may include a control unit configured to perform an analysis of at least one image of an aquatic plant culture. The analysis may include processing at least one collected image to determine at least one physical characteristic or state of an aquatic plant culture. Systems and methods for distributing aquatic plant cultures are also provided. The distribution systems and methods may track and control the distribution of an aquatic plant culture based on information received from various sources. Systems and methods for growing and harvesting aquatic plants in a controlled and compact environment are also provided. The systems may include a bioreactor having a plurality of vertically stacked modules designed to contain the aquatic plants and a liquid growth medium.

The invention provides a simulation experiment device and a method of alternating current, direct current and impact performance of a large earth screen. The device mainly comprises a rectangular simulated slot, an earth screen model equivalently reduced, an alternating and direct current experimental power supply, an impact current generator and a precise positioning system, and is characterized in that metal grids are laid on four walls and the bottom inside the rectangular simulated slot, so as to form a mesh backflow electrode; a liquid medium is injected into the slot; the earth screen model is designed and manufactured according to the experimental objective and content; the precise positioning system comprises an electrically controlled traveling crane and a total station; and the electric potential in any position in the rectangular simulated slot is convenient to measure at a fixed point through the coordination work of the electrically controlled traveling crane and the total station. The simulation experiment device and the method can meet the experimental research on direct current, power frequency and impact grounding properties of the large earth screen, can also be extensively applied to the fields, such as the experimental research of influence on aquatic organism and metal pipelines by an alternating and direct current system and corrosive property, and the like, and have the advantages of simplicity in operation, large power capacity, durability, flexibility and diversity in refitment and the like.

The present invention relates to an apparatus for treating ballast water, the apparatus being capable of treating ballast water so as to meet the ballast water standard established by the IMO exactly at low costs. The treatment apparatus of the present invention comprises a filter (4) that filters sea water to trap aquatic organisms, a bactericide supply apparatus (5) that supplies bactericide to the filtrate sea water, and a venturi tube 7 that introduces the sea water to which the bactericide is added, to produce cavitation in the sea water, thereby diffusing the bactericide and also damaging and destroying aquatic organisms in the sea water.

The present invention is related to novel acid functional pigment dispersing agents. In particular, the invention is directed to novel polymers with acid functional groups for use as pigment dispersants. The novel polymers comprise polymeric amides with free carboxyl functional groups having the structure: wherein PE is a polyester, PA is a polyamine and A is an anhydride. The novel pigment dispersants of the present invention are particularly effective for the dispersion of high color carbon black and organic pigments. The advantages of the novel pigment dispersants over known amine functional polymeric dispersants are several. They do not tend to discolor when exposed to UV light. They do not inhibit acid catalyzed reactions such as melamine crosslinking or react with isocyanate or catalyze the isocyanate / H2O reaction. They are non-toxic or much less toxic to aquatic organisms. The novel dispersants, therefore can be used in acid catalyzed and isocyanate processes without the adverse effects of the prior art amine functional dispersants. Furthermore, the novel dispersants are environmentally safer.

The invention relates to an ecological repairing method of eutrophicated water bodies in rivers and lakes and sediments, and provides a construction method of an organism structural system for synchronously repairing eutrophicated water bodies in rivers and lakes and sediments in situ by means of emergent aquatic plants, submerged plants, benthonic animals, fishes and microorganisms. The light enhancing oxygen-enriched organism structural system for synchronously repairing eutrophicated water bodies in rivers and lakes and sediments in situ has the double effects of synchronously and ecologically repairing polluted water bodies and sediments and providing habitats for aquatic organisms and microorganisms. The system comprises a lens reflective light enhancing surface water emergent aquatic plant survival area, a hollow prismoid free sliding middle water purifying area, a sediment-water interface submerged plant, a benthonic animal and fish survival area, a microorganism enriched intensified sediment purifying area and an oxygen-enriching fixed rod. The system provided by the invention can synchronously and ecologically repair the water bodies and the surface sediments, has the characteristics of good pollutant removing effect, stable and lasting treatment effect and the like, and is suitable for synchronously repairing water bodies in rivers and lakes and sediments in situ.

The present invention provides an apparatus for controlling aquatic creatures in a body of water. The apparatus comprises a power supply, a solar conversion system, two electrodes, a controllable switch unit and a control system. In operation, this apparatus generates electromagnetic emissions that are perceivable by a number of aquatic creatures thereby providing an ability to control the behaviour of these aquatic creatures, for example, attraction or repulsion thereof. The power supply provides the necessary energy and electric voltage level for the apparatus to operate and the solar conversion system provides a means for recharging and / or maintaining a sufficient energy level within the power supply. A controllable switch unit is interconnected to the two electrodes and enables the selective application of energy provided by the power supply, thereby providing for the generation of electromagnetic emissions. The control system is integrated into the apparatus in order to provide a mechanism for controlling each of the components of the apparatus, for example, to control the generation of desired electromagnetic emissions and to control the recharging of the power supply by the solar conversion system. The apparatus according to the present invention is a self-contained system and therefore is capable of continued operation without the interconnection with other systems, for example, recharging the power supply. The present invention can be incorporated into water devices, for example surfboards, lifevests or scuba equipment.

Methods and compositions which can reduce the disturbance to wild life caused when man attempts to interact with wild life and more particularly methods and compositions which can enhance the interaction of man with aquatic life with minimal disturbance to the aquatic life.

The invention discloses a debris flow draining and guiding groove based on step type erosion protection dentated sill group and application thereof. the debris flow draining and guiding groove comprises flow limiting walls, and a step type erosion protection dentated sill group disposed therein connected and cooperated therewith; the step type erosion protection dentated sill group consists of a plurality of erosion protection dentated sills imbedded in a certain depth with a certain distance therebetween; the transverse length B of the erosion protection dentated sill in the direction perpendicular to the flow limiting wall is less than the width D of the debris flow draining and guiding groove; and the erosion protection dentated sills are staggered between the two flow limiting walls. Compared with the current technologies, the invention can fully drain the debris flow safely and smoothly with low cost, can meet the requirement from structrual type mud flow to mountain torrents burst in the drainage area; and can maintain the contacting of the aquatic organisms in the groove bed to benefit the groove ecology restoration.

The invention relates to systems and methods for regulating algal biomass in offshore waters near an oil and gas production platform. The systems of the invention encompasses a plurality of modules for managing nutrients, algae, and aquaculture, including enclosures for containing aquatic organisms, and various operating subsystems that are operably associated with surface and underwater structures of the platform. In one embodiment of the invention, aquatic organisms are cultured in eutrophic water to feed on algae, thereby reducing the algal biomass. In other embodiments, the diversity of algae in an algal bloom is modified and the productivity of oligotrophic water is increased.

The invention discloses a high-efficiency treatment method of ballast water in a ship and a device adopting the high-efficiency treatment method. The high-efficiency treatment method of ballast water in a ship comprises the following steps of 1, removing planktonts and suspended particles in ballast water by a high-efficiency filter, wherein the removed planktonts and the suspended particles have sizes of above 30 to 40 micrometers; 2, based on a branch electrolysis-based inactivation treatment technology, electrolyzing a part of seawater passing through an electrolysis unit into chlorine and hydrogen by the electrolysis unit, wherein the chlorine is fast dissolved in seawater to form sodium hypochlorite, and 3, feeding back the high-concentration sodium hypochlorite solution obtained by the step 2 to a ballast water feeding header pipe so that residual harmful aquatic organisms in the ballast water are killed. The high-efficiency treatment method of ballast water in a ship has the advantages that a technology of high efficiency filtration and branch electrolysis-based inactivation treatment and the equipment suitable for the technology are adopted; a technical flow is simple; a system volume is small; compared with the existing system, the device adopting the high-efficiency treatment method has a floor space reduced by above 30%; because of the utilization of branch electrolysis, a hydrogen generation amount is low so that hydrogen can be removed completely; a potential safety hazard is eliminated; installation is convenient; and safety and reliability are high.

The invention discloses a water quality safety online biological early warning and monitoring system based on video identification. The water quality safety online biological early warning and monitoring system comprises a monitoring vessel, an image collection module, an image data pretreatment module, a background extraction and target detection module, a motion tracing module, a control module and a GSM (Global System for Mobile Communication) remote early warning module. With the adoption of the water quality safety online biological early warning and monitoring system, raw water and fish fry to be detected are introduced into the monitoring vessel, images of the fish fry are collected by the image collection module in real time and are sequentially transferred to the image data pretreatment module, the background extraction and target detection module and the motion tracing module to obtain a motion track of the fish fry; motion parameters are obtained by the control module according to the motion track of the fish fry, an increasing amplitude is obtained by comparing the motion parameters with normal values, and warning is carried out when the increasing amplitude exceeds an increasing amplitude set by a user. According to the water quality safety online biological early warning and monitoring system disclosed by the invention, a water pollution biological testing method is adopted to detect the raw water, i.e. the water quality pollution conditions are tested by utilizing the variation of physiological functions of aquatic organisms due to poisoning by pollutants.

The invention provides a biological filler bag for sewage treatment and application thereof. The biological filler bag is made by the following steps: filling a filler substrate in a fiber cloth bag made of fiber cloth, and sealing. The main raw material of the fiber cloth is a polyester fiber, a polypropylene fiber or a mixture thereof; and the diameter of the polyester fiber or polypropylene fiber is 2-8 dtex, and the length is 30-86mm. The biological filler bag provided by the invention has abundant pore sizes and large specific area, and thus, can provide a habitat for aquatic organisms and promote mass proliferation of microbes; and the biological filler bag can be used for growing aquatic plants, and is beneficial to the growth of aquatic animals. The biological filler bag also has the function of filtering impurities in a water body. The biological filler bag is applicable to sewage treatment, and has the characteristics of favorable film forming property, multiple biologic species and favorable pollutant removal effect (especially for N and P in a water body).

The invention relates to a water quality online security early warning system and method thereof. The water quality online security early warning system comprises a biology avoidance behavior sensor which consists of two testing tubes, wherein, the two tubes are communicated through a two-way in the middle and parallel with each other; the two tubes are respectively provided with two groups of stainless steel monitoring electrodes, each group of electrodes consists of a signal transmitting electrode and a signal receiving electrode, wherein, the signal transmitting electrode forms a positive rotation low voltage alternating electric field in the testing tube, and the signal receiving electrode can induce changes of the electric field; the changes of the electric field are transmitted to a signal collecting device, and displayed through a display after being processed. The invention can display behavior change signal of a tested biology with the mode of electrical signal received from multi-point monitoring, can achieve online biology monitoring of original position, online and real time via analyzing and evaluating the electrical signal, and can warn early against unknown contaminants in water body, and has very important indicating effect for the investigations of environmental pollution, in particular for paroxysmal and severe accidental changes.

The invention discloses a method for establishing an urban landscape water body ecological system. The method comprises the following steps: improving a water body substrate; planting submerged plants by using a method that upright posts are adopted to mark areas, so as to establish an underwater frost; planting layered emergent aquatic plants; putting zooplankton (daphnia magna) so as to improve the transparency of the water body; putting aquatic organisms such as fishes, shrimps and shells, so as to complete the water body ecological system; maintaining and managing the ecological system. Through the adoption of the method, the quality of the water body can be remarkably improved, the transparency can be greater than 2.0m, the quality can meet the III-type water quality standard for a long time, black, smell and dirty water bodies with blue-green algae can be thoroughly eliminated, and the water body is always kept clear completely.

A floatable raceway (1) for cultivating fish comprising a partially submersible tank (2) for containing fish having a base (5), opposing sidewalls (6), a gate assembly (8) having removable gates (10, 11) at a water discharge end of the tank (2), and an end wall assembly (7) at a water intake end of the tank (2) having a ramp (9) extending downwardly to the base (5) and towards the gate assembly (8). The raceway (1) also includes floats (3) extending the lengths of the sidewalls (6) for keeping a top of the tank (2) above water level, an airlift assembly (4) connectable to an air supply for introducing oxygenated water to the tank (2) at the water intake end, and a baffle (14) for directing the flow of water through the tank (2) along the base (5). The raceway (1) has a pair of screen gates (10) allowing the movement of fish wastes therethrough and a pair of stop gates (11) for substantially preventing water from discharging from the tank (2).

The invention discloses a method for constructing ntaxial system ecology for fishes, grasses and shellfishes in the fresh-water substance, which is characterized by effectively combining the ecological character of water with the ecological and physiological properties of aquatic organisms to build and repair the ecology of the water substance by the synergy of the symbiotic mode of various organisms such as sunken plants, emergent aquatic plants, floating plants, shellfishes, filter fishes, carnivorous fishes, predatory fishes, omnivorous fishes and herbivorous fishes, giving full play to theself-purification capacity of the ecological system of the water substance, controlling pollution to the water substance and protecting the environment of the waters. The method of the constructing ntaxial system ecology for fishes, grasses and shellfishes in fresh-water substance of the invention can be suitably popularized in and applied to waters such as rivers, lakes, pools and streams.