20 results about "Algae biomass" patented technology

To provide a biomass material for treating an effluent gas which can treat harmful substances still remaining in treated gas processed by a conventional effluent gas treatment apparatus.SOLUTION: A biomass material for treating an effluent gas contains algae biomass in an amount from 40 wt.% to 90 wt.%, and zeolite in an amount from 10 wt.% to 60 wt.%, where the contents are based on the total weight of the biomass material. The biomass material 320 molded into porous pellets is packed into a housing 310 and brought into contact with an effluent gas stream for treating the effluent gas.SELECTED DRAWING: Figure 4

The invention discloses a three-dimensional irradiation water conveyance canal ecological management system and method based on a deep ultraviolet LED, and belongs to the field of ecological management. The system comprises a shore-based irradiation subsystem, a suspended mobile irradiation subsystem, a photovoltaic power supply subsystem and an intelligent control subsystem; 275nm deep ultraviolet light is used for accurately destroying an algae light system II reaction center (the PsbA protein inactivation rate is greater than 95%), and 235nm auxiliary wavelength is combined for decomposing organic pollutants, so that algae inactivation and water purification are synchronously realized. The suspension unit adopts a ball screw lifting mechanism (the positioning precision is + / -2mm) to adapt to water level fluctuation, and the photovoltaic direct supply system reduces carbon emission by 63%. The system can reduce the algae biomass by 92% and the DOC removal rate by 41%, and has no toxic influence on fishes (LC50 is greater than 100mW / cm < 2 >). The pollution risk of a traditional mercury lamp and the ecological harm of a chemical method are overcome, and a green treatment scheme is provided for a long-distance water transfer project.

The invention discloses a test device and method for researching physiological and ecological characteristics of disastrous periphytic algae and shellfish in a channel. The test device comprises a circulating water tank system, a multi-environmental factor coupling control system and an in-situ monitoring system, wherein the multi-environmental factor coupling control system is used for regulating and controlling one or more environmental factors of a water body in the circulating water tank system; the in-situ monitoring system is used for acquiring growth condition images of algae and / or activity condition images of shellfish in the circulating water tank system by adopting an AI behavior tracking camera, and extracting algae biomass data and / or shellfish movement behavior parameter data. According to the test method, algae biomass data and / or shellfish motion behavior parameter data are / is analyzed and processed to obtain a critical environment factor threshold value of algae and shellfish. According to the testing device, the environment of periphytic algae and shellfish can be simulated more truly, so that the physiological and ecological characteristics of the algae and shellfish can be researched more scientifically and more accurately.

The present invention relates to a method for preparing an algae extract from an algae biomass comprising chlorophyll, polar lipids and possibly present triglycerides, said algae extract comprising polar lipids dissolved in 1, 3-propanediol and whose parameter a according to the CIELAB color space is greater than or equal to-5, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably greater than-10, preferably to the use of said algae extract as a cosmetic active agent, and to a cosmetic composition comprising said algae extract.

The invention provides a lake water ecological system restoration method based on staged biological regulation and control, and belongs to the field of water environment treatment and water ecological restoration. According to the method, directional putting and regulation of aquatic animal communities are performed in three stages according to the recovery process of submerged plants: in the early regulation stage, carnivorous fishes are put to inhibit breeding of benthic omnivorous fishes; a middle-stage regulation and control stage: introducing benthonic animals to cooperatively control the quality of algae biomass and improve the transparency of the water body; in the later regulation and control stage, herbivorous fishes are put to promote plant tillering, lateral branch development and root system downward growth and expansion, and the substrate fixing capacity is enhanced; according to the method, the aquatic animals with the specific function class groups are sequentially put in stages, directional regulation and control of the aquatic animal community structure are effectively achieved, the planting success rate of the submerged plants is increased, growth of the aquatic plants is promoted, water transparency is improved, and a stable water ecosystem with the self-purification capacity is constructed.

The invention belongs to the technical field of sewage treatment, and discloses a bacteria-algae granular sludge storage and reactivation method which comprises the following steps: cleaning bacteria-algae granular sludge to be stored with pure water to obtain cleaned bacteria-algae granular sludge; adding the pretreated clear water and the cleaned bacteria-algae granular sludge into a storage reactor, and storing in a preset low-temperature environment and in a periodic light-dark alternating environment; when the stored bacteria-algae granular sludge needs to be reactivated, removing supernate in the storage reactor, and providing aeration and illumination in situ to obtain reactivated bacteria-algae granular sludge; a collaborative preservation system is formed through a clear water storage medium and coupling with a low-temperature environment and light-dark alternation period regulation and control means, so that the stored bacteria-algae system can quickly recover the sewage treatment efficiency, and meanwhile, the algae biomass is completely maintained; the obvious advantages are shown in the aspects of stability maintenance and function recovery efficiency of a symbiotic system of the bacteria-algae granular sludge.

The invention discloses an algae biomass prediction method based on state evolution consistency constraint. The method comprises the following steps: preprocessing acquired data; after STL time sequence decomposition is carried out, trend terms are reserved, and algae density trend components are obtained; establishing a physical constraint based on an algae growth kinetic equation to obtain a specific growth rate dynamic equation; constructing a dynamic embedded time sequence prediction model, and introducing a dynamic consistency gating mechanism and a time step prediction correction mechanism; performing model training and evaluation, and obtaining an algae density prediction optimization model after improvement; and outputting an algae biomass predicted value through the optimization model. According to the method, algae growth dynamics and state evolution of a deep learning time sequence prediction model are deeply fused, the defect that only a data-driven model lacks physical consistency is avoided, the extreme value is predicted and corrected through dynamics consistency constraint and time step, the adaptability of the model to a complex hydrological environment is improved, the prediction precision of the model is improved, and the prediction efficiency of the model is improved. And the model interpretability is improved.

An algae-based thermoplastic foam is provided having a protein-rich algae biomass selected from either microalgae, macroalgae or combinations thereof. The protein content is greater than or equal to 15% by weight of the algae biomass and the algae biomass is dried to a moister content of less than or equal to 15% by weight having an average particle size of up to 200 microns. The composition includes a resin configured to exhibit rheological properties suitable for blending with algae including a melting temperature less than 250° C. and a melt flow rate in excess of 0.01 g / 10 min. The foam includes a foaming ingredient selected from the group consisting of crosslinkers, compatibilizers, plasticizers, accelerants, catalysts, blowing agents, other ingredients, and combinations thereof.

An ecological regulation method for inhibiting water bloom of reservoir tributaries, through collecting water bloom monitoring historical data, analyzing the relationship between water level amplitude and algal biomass, determining the water level amplitude threshold for inhibiting water bloom, on the basis of combining reservoir regulation rules and reservoir inflow and outflow data, calculating and determining the regulation period meeting the requirement of inhibiting water bloom, in the regulation period, through regulating and controlling reservoir water level to the predetermined range and rising and falling according to the preset amplitude and frequency, water temperature stratification is destroyed, so that the water bloom of the tributaries is effectively inhibited, the method is implemented under the premise of meeting the requirements of flood control, power generation and navigation, realizes the multi-target collaborative management, is convenient to operate, has practical application value, and has important significance for improving the water ecological environment of the reservoir area and protecting the safety of water resources. Meanwhile, the present application can also dynamically adjust the regulation strategy according to real-time monitoring data to adapt to the water bloom prevention and treatment requirements under different seasons and different weather conditions, and can further improve the water bloom prevention and treatment effect in combination with other ecological engineering technologies.

The present invention discloses a system and method for monitoring and warning the scale of phytoplankton biomass in water bodies. The system is an algae biomass scale measurement scheme based on an ecological mathematical model, including a sample collection module 100, a water quality type identification module 200, an initial model matching module 300, a target model calibration module 400, an algae biomass scale prediction module 500, and an algal bloom information processing module 600. Through the hierarchical classification technology logic of water quality type trigger response and matching model, the system has a phased leap response to high organic matter water quality, which has emergency management significance. By constructing a prediction model around population dynamics, placing the importance of organic matter content before nitrogen and phosphorus content, constructing a mathematical function for environmental factors classification, and using surface runoff variables to characterize the hydrodynamic characteristics of water bodies, the present invention saves data costs and computing overhead, and reduces the adaptability of the technical solution for promotion. The present invention also provides a system-based method for monitoring and warning the scale of phytoplankton biomass in water bodies.

The present invention relates to a process for deodorizing a Nannochloropsis algae biomass, comprising a) contacting the biomass with an adduct-forming compound selected from sodium bisulfite in an amount of 0.5-30% by weight, b) stirring or shaking, and c) collecting a solid from the suspension.

A biomass material for treating an effluent gas stream includes an algae biomass in an amount of from 40 weight % to 90 weight % based on a total weight of the biomass material and a zeolite in an amount of from 10 weight % to 60 weight % based on a total weight of the biomass material.

The invention provides a flue gas pollutant resource utilization method and a flue gas treatment system, and aims to solve the technical problems of low pollutant conversion efficiency, lack of functional partitions of a reactor and low added value of products during existing flue gas treatment. The method comprises the following steps: S1, flue gas pretreatment: cooling and dedusting flue gas and carrying out gradient adsorption on pollutants; s2, biotransformation: converting a sulfur-containing compound into sulfate by using sulfur oxidizing bacteria, and converting a nitrogen-containing compound into algae biomass by using a co-culture system of nitrifying bacteria and microalgae; and S3, product recovery: recovering at least two different types of resource products. According to the method, efficient removal and resource utilization of pollutants are realized through functional partition design, microorganism-algae synergistic metabolism regulation and a product directional separation technology.

The invention discloses a composite system for promoting growth of blue-green algae and fixing carbon dioxide and a method, a system and application thereof. The composite system comprises a 2D MOF photocatalytic material, blue-green algae bacteria and a light source. According to the method, a 2D MOF material with a specific photocatalytic structure and blue-green algae are mixed in a culture medium, and co-culture is carried out under visible light irradiation. Wherein the 2D MOF material is used as an exogenous photosensitizer, generates photo-induced electrons and active oxygen species after absorbing light energy, and provides exogenous reducing power and energy for blue-green algae, so that the carbon dioxide fixing capacity, photosynthesis efficiency and central carbon metabolism activity of the blue-green algae are remarkably enhanced. The system and the method provided by the invention can obviously promote the accumulation of blue-green algae biomass and improve the synthesis amount of beta-carotene and chlorophyll a in the blue-green algae. The method is easy and convenient to operate, mild in condition, free of complex genetic modification or additional chemical reducing agents and suitable for the fields of microalgae culture, high-value pigment production and photosynthetic organism manufacturing.

The invention discloses an algae collaborative aquaculture wastewater circulation treatment system and treatment device. The system comprises a culture unit, a circulating power unit, a solid-liquid pretreatment unit, a circulating algae membrane treatment unit, a chemical dosing unit and a recycling unit, and all the units form a closed recycling water path through circulating pipelines. The solid-liquid pretreatment unit separates residual feed from suspended solids and forms a concentrated blowdown stream. The circulating algal membrane treatment unit brings the body of water into contact with the algal membrane interface and introduces the recovery stream into the recovery vessel (3). The recovery container (3) comprises an upper-layer recovery cavity (31) and a lower-layer sedimentation recovery cavity (36) which are vertically overlapped and communicated, and an overflow vertical pipe (33) is arranged between the upper-layer recovery cavity (31) and the lower-layer sedimentation recovery cavity (36); and the dosing unit is used for dosing a magnesium source into the overflow vertical pipe (33), so that struvite crystals are generated, settled and recycled in the lower settling and recycling cavity (36). The recycling unit outputs struvite crystals and algae biomass, and lower-layer supernate flows back to the breeding unit.

The utility model provides an in-situ algae control system for a tail water receiving river channel of a sewage plant. The in-situ algae control system comprises an emergency dosing unit, a shading algae control unit, an ecological floating island unit and a submerged plant unit. According to the utility model, a mode of combining various means is adopted, abnormal proliferation of algae and release of algal toxins are inhibited through low-dose chemical agents, and side effects and secondary risks are reduced; physical shading is combined with flow making and reoxygenation, so that the flowability and exchangeability of a water body in a local water area are improved, the living environment conditions of algae in the water body are changed, and the purposes of algae control and water quality stabilization are achieved; meanwhile, according to the principle of multi-nutritional-level regulation and control, through engineering measures, a microhabitat is created, the competitive effect among primary producers and the descending effect of primary consumers are strengthened, a natural food chain is reconstructed, and the algae biomass in the water body is further controlled. The device provides technical support for algae control and water quality stability of the tail water receiving water body of the sewage plant.

The invention provides an advanced treatment method of a sludge high-hydraulic-pressure dehydrated liquid, which comprises the following steps: S1, adding a magnesium source into the sludge high-hydraulic-pressure dehydrated liquid, adjusting the pH value to 8.5-9.5, and then recovering 60-80% of phosphate through a struvite crystallization method; s2, introducing the supernate in the step S1 into an adjusting tank, diluting the supernate until the ammonia nitrogen concentration is less than 100mg / L according to the water quality condition, and supplementing necessary trace elements of iron and boron; s3, introducing the adjusting liquid in the step S2 into a photobioreactor, inoculating ammonia-nitrogen-resistant green algae, and introducing specific nitrifying bacteria to form a bacteria-algae symbiotic system; s4, regularly introducing biochar into the algal-bacterial symbiotic system, so that the biochar and the algal-bacterial symbiotic system are combined to form floc with higher density, and the settling performance of algae is improved; and S5, periodically realizing primary concentration of the algae biomass through gravity precipitation, and carrying out centrifugal dehydration to obtain algae mud with high solid content.

The present disclosure includes Sargassum-based polymer composite filaments for 3D printing having (1) a higher content of algae biomass as compared with commercially available algae-based filaments, and (2) enhanced 3D printer bed adhesion and biodegradability as compared to polylactic acid (PLA) filaments.

The invention belongs to the technical field of aquatic organism resource protection, and particularly relates to an aquatic organism integrity evaluation method and system and application thereof. The method comprises the following steps: investigating aquatic organisms in an evaluation area; the method comprises the following steps: acquiring the following biological indexes in investigation: periphytic algae biomass, benthonic animal biomass, the amount of catches per unit fishing effort, a Pielou uniformity index and a Shannon-Wiener index; calculating the weight of each biological index by adopting an information entropy weight method; and by adopting a linear weighted combination method, multiplying the normalized biological index and the information entropy weight of the normalized biological index, and then accumulating to obtain the aquatic organism integrity index. The invention further provides a system for implementing the method. The method and the system have the advantages of being accurate, objective and comprehensive, and have good application prospects in the fields of aquatic organism resource protection, ecological system evaluation or environment monitoring.

The application discloses a preparation method and application of an algae-based red mud catalyst and belongs to the technical field of catalysts. The algae-based red mud catalyst is prepared by using industrial waste residue red mud and blue algae in Dianchi Lake as raw materials through a hydrothermal-pyrolysis method, that is, magnetite in the red mud is reduced into magnetite by using blue algae biomass, and nitric acid is added in the preparation process to adjust pH, so that the problem of low reaction activity of the current pure red mud catalyst caused by high alkalinity, small specific surface area and high iron valence state can be effectively solved, water pollution treatment and solid waste resource utilization are simultaneously realized, and the algae-based red mud catalyst can be applied to 17alpha-ethynyl estradiol (EE2) adsorption and degradation. After 17alpha-ethynyl estradiol (EE2) with an initial concentration of 2 mg / L is adsorbed for 50 min, the removal rate of 17alpha-ethynyl estradiol (EE2) can reach 42.67%, and then 0.08 mM persulfate (PDS) is added to remove 99.99% of 17alpha-ethynyl estradiol (EE2) in 30 min.