188 results about "Ulvophyceae" patented technology

Methods of harvesting algae, and using algae as a biofuel, livestock feed, or food supplement are provided. The methods comprise contacting liquid algae suspensions with a filtration media. Depending upon the filtration media, the resulting algae and filtration media admixture is then utilized as a biofuel, livestock feed, food supplements, or for the extraction of algae oil. Admixtures comprising a combustible filtration media, such as coal, are particularly preferred. The methods are suitable for use with any algae species. Compositions for use as a biofuel, livestock feed, or food supplement are also provided. These compositions comprise an admixture of algae and a filtration media.

The invention discloses a freshwater shrimp culture tail water treatment system for treatment of the tail water of a culture pond. The freshwater shrimp culture tail water treatment system comprises:a pair of ecological ditches for preliminary purification of culture tail water, a sedimentation tank for sedimentation to remove granular solids in the culture tail water subjected to preliminary purification in the ecological ditches, a filtration dam for filtering solid particles in the culture tail water subjected to sedimentation treatment in the sedimentation tank, an aeration tank for aeration treatment of the culture tail water subjected to filtration treatment by the filtration dam, a biological purification tank utilizing fungi and animals to remove harmful substances, algae and thelike in the culture tail water subjected to aeration treatment in the aeration tank, and a constructed wetland for effective degradation of pollutants and harmful substances in the culture tail watersubjected to purification in the biological purification tank. The freshwater shrimp culture tail water treatment system provided by the invention can effectively remove solid particle impurities in culture tail water, lower the dissolved nitrogen and phosphorus content, and degrade pollutants and harmful substances. The treated culture tail water can reach the culture tail water discharge standard, and can finally be discharged into external rivers or recycle to culture ponds.

A system for the production and harvesting of algae including one or more of the following components: A turbulator for dissolving carbon dioxide in water to form an algae growth media, a photobioreactor having a serpentine flow path for the algae growth media through spaced apart high and low baffles with an associated light source, a dewatering device for the algae slurry harvested from the photobioreactor, a turbulator for breaking up the cells in the algae sludge coming off the dewatering device, a cooker for cooking the broken up algae cells under pressure and a settling tank for separating the cooked cells into oil, spent media and biomass fractions.

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 method for producing oil by mixed culture of yeast and alga. In the method, industrial waste water is used as a culture medium for the mixed culture of yeast and alga, so as to produce microbial oil. The method is characterized in that compared with the single culture of two microorganisms, by the mixed culture of yeast and alga, the chemical oxygen demand (COD) of the waste water can be more effectively degraded and the yeast and alga are also promoted to reliably utilize the nutrient components in the industrial waste water, thereby being beneficial to the synthesis of the oil. The method for producing the microbial oil has the advantages of low cost and high practicable value, is simple to operate, namely, the pollution of high-concentration industrial waste water on environment can be reduced, and waste materials are changed into valuable things so as to produce shortage product oil, thereby achieving the purpose of recycling the waste materials.

The invention discloses an alga control method for a freshwater environment based on cultivation of barracudas and mullets, relating to a water treatment method. Aiming at solving the problem that algae can not be stably and thoroughly controlled in a eutrophic fresh water body, the method comprises the following steps: at least introducing one species of estuarine/marine fishes, such as barracudas and mullets which can only be propagated in sea water, and carrying out desalination processing before cultivation to enable the barracudas and the mullets to be adapted to a freshwater living environment, wherein the mesh size in the large water body ensures whether the cultivated fishes can escape; dividing or mixing according to different ages, carrying out culture in enclosure in girds by meshes, and simultaneously cultivating and propagating silver carps, bighead carps, other local fishes and local shellfish; and propagating local common aquatic plants. Thus, the fishes can be fed on the algae in a filter-feeding mode and simultaneously swallow detritus substances, thereby achieving the purpose of thoroughly purifying the water environment. By harvesting the cultivated and propagated aquatic organisms to remove nitrogen/phosphorus nutrients in water and humus in bed material from the water body, the method disclosed by the invention greatly improves the water quality of the cultivation water body.

The invention relates to a method for killing water surface algae. A heterogenic characteristic of water surface distribution of harmful algae is utilized; an algicide is prepared into a floating algicide; an effective amount of the floating algicide is put into an area with condensed algae in a shining morning, and active ingredients are mainly diffusing on the water surface to reach an efficient algicide concentration, so as to kill harmful algae selectively without influencing other beneficial algae in the water body. The method has characteristics of high efficiency, safety, low cost and reduced secondary pollution, etc.

The invention provides a holothuria scabra artificial seeding breeding method. The method comprises the steps such as parent holothurian cultivating, induced spawning, spawn washing and hatching, larva cultivating, seedling collecting and childish holothurian cultivating, wherein spirulina powder, marine yeast, aquatic yeast and bacillus serve as bait, not only are bait sources convenient, but also the investment of single cell culture facilities is saved, meanwhile, manpower needed by single cell algae bait culture is saved, the holothurian seedling cost can be greatly saved, and the popularization of the holothuria scabra seedling breeding technology is facilitated. The substitutive bait is adopted to replace living single cell algae, invested funds of seeding facilities can be saved by about 25 percents, the human input of seeding can be saved by about 30 percents, and the ratio of the seeding input to the seeding output 1:3. Induced spawning is performed on the two days before or after the first day and the fifteenth day of a lunar month, the good effect of two times of spawn sampling in one month is achieved, the induced spawning success rate is 83.3 percents, and the technical problem that the induced spawning difficulty of holothuria scabra parent holothurian is high is effectively solved.

The invention discloses aquatic plant fish granulated feed. The aquatic plant fish granulated feed is prepared from, by mass, 15-25 parts of aquatic plant powder, 15-25 parts of an aquatic plant preparation, 10-20 parts of rape seed cakes, 5-15 parts of No.4 powder, 10-20 parts of plant oil meal, 2-3 parts of calcium hydrophosphate, 1-2 parts of salt, 1-2 parts of lysine, 2-3 parts of rapeseed oil, 1-2 parts of eggshell powder, 1-2 parts of sugar and 0.5-1 part of vitamin. The adopted raw materials are aquatic plants contaminating water and damaging the ecological environment, enzymolysis and extraction are carried out through the bioengineering technology, and the fish feed is prepared. Water pollution is prevented, the water environment is treated, the ecological environment is restored, the growth environment of fish is improved, and disoperation of some algae to a water area and the fish is reduced. The use amount of the feed is reduced and breeding cost is reduced. The fish feed contains various nutritional substances and has the function of promoting growth of fish.

The invention discloses a mixed type algae water purifying agent and application thereof. The mixed type algae water purifying agent is composed of, by weight part, 3-7 parts of chlorella pyrenoidosa and 5-10 parts of anabaena. A preparation method of the mixed type algae water purifying agent is composed of preparation of the chlorella pyrenoidosa, preparation of the chlorella pyrenoidosa and algae cell immobilization. The mixed type algae water purifying agent has the advantage that the obtained mixed type algae water purifying agent is immobilized algae cells, which is high in metabolic activity, slow in aging and capable of effectively removing ammonia nitrogen, nitrate and nitrite in water and improving the water quality environment. The mixed type algae water purifying agent is simple in process and method, high in product quality and stability, low in price and good in application effects and economic benefits.

Apparatuses and methods for growing filamentous algae are disclosed. An apparatus comprises vertical surfaces such as plates or tubes which are suspended above the fill line of a water tank. Surfaces can have a frosted texture for algal growth. The surfaces are kept moist by pumping water from the tank through spray bars to the surfaces. Sprayed water drips back into the water tank. Algae growing on a surface can be processed into products such as biofuel and glycerin. Aquatic animals such as fish can be grown in a tank. An aquatic animal can generate nitrogenous waste as nutrient for algae, and provide food for human consumption. The amount of harvestable algae produced by an apparatus can exceed the amount produced from other systems of comparable size over comparable durations. An apparatus can also be utilized to scrub CO₂.

The present invention relates to a process of remediating wastewaters, preferably agricultural wastewaters resulting from animal production or contained animal feeding operation sites. The water is treated to promote assimilation of nutrients into algal biomass, which can be harvested and sold, and the resultant wastewater is then purified. According to the invention, short wavelength UV radiation (less than 280 nm wavelength) is used to pretreat wastewater, with the dose determined by absorbance of the water, not by bacterial load. Pretreated water exhibits changes in chromophoric dissolved organic matter that allows for improved and increased algae production by as much as 88%.

The invention discloses a submerged macrophytes restoring process guided by water conservation fishery. By stocking silver carp and bighead carp and reducing COD (chemical oxygen demand), TP (total phosphor), chlorophyll and other chemical indexes of the water body, the process effectively reduces the algae biomass in the water body, improves the water body transparency, and achieves the aim of preventing algal bloom and improving the water quality, so an excellent growing condition is provided for aquatic macrophytes (in particular, the submerged macrophytes); and by adding fish and other key organisms eating attaching organisms, which is a key link in a food chain, the attaching organisms growing vigorously on the surface of the submerged macrophytes can be removed in time, and the aim of restoring the submerged macrophytes can be achieved.

The invention provides a farming method of penaeus vannamei boone, The method can increase the yield and quality of the penaeus vannamei boone. The method includes the steps that a pool is prepared, seedling is bred and fodder is prepared, exuviation and synchronous growth are promoted, and catching is processed. The invention has the advantages that feeding density is reduced and survival rate of shrimps is high. The problem of the survival rate of shrimps influenced by fry degradation because of high-density feeding module is solved. The water quality can be controlled during feeding. The left fodder, excreta of penaeus vannamei boone, dead algae and the like can be collected to the central area of the pool by air circulation in the process of oxygenation, a relative large clean water area is formed at the surroundings of the pool, and a clean survive room for shrimps is provided. The daily management to shrimps and pool is processed during feeding, shrimp diseases are reduced. The promoted exuviation and synchronous growth enable the shrimps to be average in size and stable in quality. When the shrimps grows to 8 to 10 centimeters, the shrimps can be caught in time, the load to the pool is relieved, the diseases are controlled, good water environment of the pool is ensured, and the yield of shrimps is increased.

The presently described invention relates to systems for continuously culturing, harvesting, and oil extraction of algal cultures for the production of algae oils.

The invention discloses a method for domesticating daphnia magna and a water ecological restoration method through the same inventive concept. According to the method for domesticating the daphnia magna, toxic substances are added to a culture pool, and the method for domesticating the daphnia magna is achieved through specific domesticating methods. According to the water ecological restoration method, the daphnia magna domesticated through the toxic substances is adopted and put into water rich in algae and toxic substances such pesticides, therefore, the water is purified, and underwater ecological balance is restored so as to achieve water ecology self-purification.

The present invention relates to compositions and uses of a novel Dunaliella salina HT04 microorganism. In addition, the present invention relates to novel methods for culturing harvesting, preservation, storage, and production of algae seedstock and uses thereof.

The present invention comprises a method of producing algae derived oils comprising growing, stressing, and harvesting algae and then extracting total lipids from which specific oil fractions are purified.

The invention discloses a method for preparing alga inhibitor from a natural plant barley, belonging to the field of water pollution control. The method comprises the following steps of: drying and crushing barley, extracting with ethanol containing water (or low-carbon alcohol containing water) to obtain barley extract liquid; distilling at reduced pressure to obtain an extract A; removing components which can be dissolved in petroleum ether from the extract A; extracting with chloroform (or dichloromethane or diethyl ether) and ethyl acetate (or n-butyl alcohol or acetone) to respectively obtain organic phases B and C; and respectively distilling at reduced pressure to finally obtain alga inhibiting component extracts D and E. The method has the advantages that the method is simple and easy to operate, cost is low, material sources are wide and easy to obtain; moreover, two alga inhibitors with high purity can be obtained at the same time; therefore, the method can be widely used for controlling algal bloom of lakes and reservoirs.

The invention relates to a method for obtaining antioxidant extracts from macroalgae using ultrasound-assisted continuous aqueous extraction. The process can be performed using fresh algae or dry algae, after resuspending same in water. A suspension of alga in water is prepared with a solid concentration of 10% to 30%. The mixture is fed to an ultrasonic breakdown system. The extract is filtered and lyophilised, obtaining total polyphenol concentrations of 62.4 mg eq. of phloroglucinol /g of lyophilizate with Bifurcaria bifurcata and 44 mg eq. of phloroglucinol /g of lyophilizate with Ascophyllum nodosum. The extract can be used as an ingredient in cosmetic and food formulations.

The invention belongs to the technical field of marine fish (mullet) bait research and development, relates to a treatment method and a component proportion of high-efficiency marine algae enteromorpha for baits, and aims at using enteromorpha as a new feed resource for development and application and applying the enteromorpha as a low-input high-output algae feed in the breeding industry. The marine green tide algae enteromorpha serving as a high-efficiency feed additive comprises the following components: 300g of fish meal, 300g of soybean meal, 70g of whole wheat flour, 50g of yeast, 50mL of maize germ oil, 15g of soybean lecithin, 5g of sodium alginate, 1g of cellulase, 50000IU of vitamin A, 4000IU of vitamin D, 100mg of vitamin E, 50mg of vitamin B1, 50mg of vitamin B2, 5mg of vitamin B6, 10mu g of vitamin B12, 150mg of nicotinamide, 50mg of calcium pantothenate, 500mg of choline bitartrate, 500mg of vitamin C, 100mg of iron, 10mg of copper, 5mg of zinc, 10mg of magnesium, 1mg of iodine, 10mg of manganese, 100mg of potassium, 5580mg of calcium hydrophosphate, and 250mg of L-lysiante, wherein the enteromorpha is added according to a gradient. A feeding attraction activity test is carried out by detecting the rate of live weight growth of mullet, a specific growth rate and a bait coefficient, and the best feed enteromorpha gradient is finally determined. According to the invention, the enteromorpha serving as a low-cost high-efficiency feed additive can be quickly applied in the breeding industry.

The invention discloses a culture and separation device for daphnia magna, comprising an algae growth promoting device, a daphnia magna culture container arranged in the algae growth promoting device, a circulating water device arranged in the daphnia magna culture container, and a daphnia magna separation device. The invention also discloses a culture and separation method for daphnia magna by utilizing the device. The culture and separation device provided by the invention is simple and convenient for operation, and high in operability; the materials of the device are easy to be obtained; and the device is simple in structure, and convenient for manufacturing and maintenance. The culture container employed by the culture and separation device for daphnia magna is formed through one step and small in volume, thereby avoiding pollution of other substances and being easy for replacement, and also facilitating subculture; the flea food growth promoting device is advantageous for the growth and reproduction of flea food algae, thereby omitting the work of feeding each day; the circulating water device reduces the step of aeration needed in the flea culture process; and the separation device prevents fleas from leaving the water surface in the separation process to guarantee large-quantity quick separation of fleas. The application of the culture and separation device for daphnia magna can ensure the quality of flea toxicity tests.