18 results about "Algal growth" patented technology

The invention provides a nutrition regulator based on bioactive substances and a preparation method of the nutrition regulator based on the bioactive substances. Comprising the following raw materials in parts by weight: 10-20 parts of zymosan, 15-25 parts of fulvic acid, 20-30 parts of a high-activity carbon source, 5-10 parts of compound biological enzyme, 8-15 parts of algae auxin, 8-12 parts of compound probiotics, 3-8 parts of betaine, 15-25 parts of compound mineral elements and 5-10 parts of compound trace elements. According to the nutrient regulator, the algae auxin is formed by compounding the undaria pinnatifida fermentation product, the pomegranate peel fermentation product and the enteromorpha fermentation product, the undaria pinnatifida fermentation product promotes diatom growth, the enteromorpha fermentation product promotes green algae growth, the pomegranate peel fermentation product can inhibit growth of harmful algae such as blue-green algae, and the nutrient regulator has a synergistic effect on the algae auxin. Therefore, the proportion of beneficial algae such as diatom is increased and maintained for a long time, stable, efficient and high-quality water color beneficial to culture is formed, and the productivity structure of the pond is fundamentally optimized.

This application discloses an online monitoring device, method, and medium for chronic toxicity of water bodies, relating to the field of water quality monitoring technology. A first culture tank is connected to a first and a second peristaltic pump, receiving nutrient solution and a reference water sample. A second culture tank is connected to a third and a fourth peristaltic pump, receiving nutrient solution and a test water sample. Both culture tanks contain test algal solutions and have overflow holes near the top. An environmental control component adjusts environmental parameters. Two fluorescence detection probes are respectively inserted into the two culture tanks. A control device controls the flow rate of the peristaltic pumps and acquires the fluorescence signals detected by the fluorescence detection probes. The fourth peristaltic pump continuously pumps the test water sample into the second culture tank, ensuring real-time water sample monitoring. The overflow holes in the culture tanks, and the control device adjusting the flow rate of the peristaltic pumps, allow the net algal growth to approach the overflow carry-out amount, maintaining a stable algal concentration within the culture tanks. Continuous replenishment of the nutrient solution meets the needs of the logarithmic growth phase, prolonging the logarithmic growth phase of the algae, thereby meeting the requirements for chronic toxicity monitoring.

The present disclosure teaches an algal growth system. The algal growth system includes a flexible sheet material, a liquid reservoir, a mechanism to rotate the flexible sheet material, a resource reclamation device, and an enclosure. The flexible sheet material facilitates growth of a biofilm. The liquid reservoir is configured to retain a contacting liquid in contact with the flexible sheet material and the mechanism rotates the flexible sheet material through the contacting liquid.The resource reclamation device associated with the enclosure is configured to collect and provide a resource for reuse.

This invention discloses the application of *Pseudomonas orientalis* in simultaneously inhibiting algal growth and promoting carbon dioxide fixation, relating to the fields of environmental microbiology and ecological governance. The invention provides the application of *Pseudomonas orientalis* in simultaneously inhibiting algal growth and promoting carbon dioxide fixation. *Pseudomonas orientalis* exhibits an algal inhibition rate as high as 97.57%, and its carbon dioxide fixation rate is 0.43 g / L·d. This invention also provides a *Pseudomonas orientalis* inoculum and its preparation method. This invention achieves, for the first time, the simultaneous regulation of algal inhibition and carbon fixation, effectively solving the problem of mutual constraint between algal control and carbon fixation processes in traditional technologies.

The present invention relates to the technical field of water treatment, and specifically relates to a treatment system and method for infinitely increasing the cycles of concentration of circulating cooling water. The system comprises an indirect cooling section, a split-flow treatment section and a sludge treatment section; the entire system has no effluent discharge, such that the cycles of concentration of the system are infinitely increased; and finally, partial water is removed by means of sludge discharge from the system, and thus partial salt is carried away, thereby achieving salt balance. A series of measures are taken to solve the problems in a spray water system, such as corrosion, scaling and microbial and algal growth, thereby enabling the stable cyclic operation of the system, realizing water conservation and consuming concentrated brine, and thus resolving the challenge of concentrated brine treatment. The present invention closely aligns with the circular economy, realizes the resource utilization of concentrated brine, and achieves water conservation and pollution reduction, thereby yielding significant economic and social benefits.

This invention provides a method for treating high-salinity wastewater using *Chaetoceros muelleri*, belonging to the field of water treatment: *Chaetoceros muelleri* strains in a preservation state are transferred to a nutritionally complete and suitable standard f / 2 culture medium for activation culture under standard f / 2 conditions; actual marine aquaculture wastewater is used as the treatment target, and after filtering out impurities, the salinity of the wastewater is adjusted to 30-35‰; the *Chaetoceros muelleri* treated in step S1 is inoculated into the high-salinity wastewater at 0.05–0.2 g / L (dry weight), and the lighting system is activated after inoculation; during system operation, the algal biomass and changes in ammonia nitrogen, total nitrogen, and phosphate in the water are monitored regularly; when the pollutant removal rate remains stable at a high level and the algal biomass continues to increase, the system can be considered to be operating stably. This invention efficiently removes nitrogen, phosphorus, and other pollutants from wastewater using *Chaetoceros muelleri* technology, while maintaining stable algal growth, thus improving wastewater treatment efficiency and resource utilization rate.

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.

The utility model discloses a kind of rural sewage grey membrane processing zero discharge systems, belong to rural sewage treatment technical field, including grey water pipeline collection component, sewage treatment plant and reuse pipeline component;Sewage treatment plant includes grey integration structure, high -efficient biofilm formation structure and biological membrane stable structure;Grey integration structure includes grey shell, and be separated into anoxic zone, aerobic zone and sedimentation zone by grey partition wall in grey shell, each grey partition wall top is provided with flow guide groove;High -efficient biofilm formation structure is set in aerobic zone by biological membrane stable structure;High -efficient biofilm formation structure includes several grey PP fiber fillings of load Fe3O4;Biological membrane stable structure includes grey flexible filler frame, each grey PP fiber filling is fixed on grey flexible filler frame. The utility model solves the problems of low processing efficiency, high cost, unstable biological membrane and algal growth in the prior art, and realizes efficient purification treatment of grey water in rural domestic sewage.

Apparatuses and methods for utilizing different algal growth techniques to filter aquarium water under varying conditions, including freshwater, brackish, and saltwater, and including amounts of nutrients (including ammonia, nitrite, nitrate, phosphate, CO2) which vary from low to high levels. Also disclosed are embodiments to operate above water, submerged, or any combination thereof, in separate or synergistic configurations, as well as embodiments to utilize faster-growing algal species to out-compete and overgrow slower-growing species.

The present application provides a kind of nearshore algal growth condition monitoring method and its monitoring device, comprising: S1: at the slope shore of water body, water camera and underwater camera are configured, the viewfinder of water camera is directly opposite water body upper surface setting;Underwater camera is inserted into water body along the oblique direction of slope shore;S2: using water camera obtains first image, underwater camera obtains second image;And send to remote monitoring server;S3: remote monitoring server carries out spectral analysis to the first image and second image obtained, determines water bank line position, growing area of periphytic algae;S4: carry out water quality evaluation parameter calculation, obtain monitoring result.This scheme carries out spectral analysis and calculation to first image and second image, obtains the reproduction trend of alga in real time, and additionally provides a kind of specific monitoring device mechanical structure.

This invention discloses a dynamic control method and intelligent cultivation device for algal extract cultivation, relating to the field of algal cultivation. The method includes the following steps: Step 1, algal growth environment detection: A sensor group located inside the cultivation tank is activated to detect the growth status of the algae and the cultivation environment. Step 2, illumination control: The central lamp tube at the top of the cultivation tank and the symmetrical fluorescent lamp group on the outside are activated, and the drive motor of the rotating component operates. The sleeve plate drives the inserted tank lid and two vertical plates to rotate slowly, ensuring uniform illumination coverage of all areas inside the tank. Step 3, cleaning control: The connecting rod and the annular scraper are moved downwards. During the downward movement of the annular scraper, the algae attached to the outer wall of the lamp cover are scraped off. This invention can accurately grasp the growth status and cultivation environment parameters of the algae, achieve uniform illumination coverage inside the tank, and ensure stable light transmittance of the device, guaranteeing a consistent algal growth environment, thereby improving the subsequent extraction efficiency of algal extracts.

This invention discloses a channel surface structure for inhibiting algal growth, relating to the technical field of suppressing algal populations in water conveyance channels. It includes a channel surface protrusion unit structure for disturbing water flow, a drive mechanism for adjusting the angle of the protrusion units to improve the disturbance effect, and a tie rod mechanism connecting each protrusion unit to the drive mechanism. Multiple sets of protrusion units are spaced apart along the water flow direction on the channel slope, with each set of protrusion units parallel to each other. The drive mechanism drives two triangular plates in each protrusion unit to rotate synchronously around an axis in opposite directions via the tie rod mechanism, thereby adjusting the water flow pattern near the channel surface. This water flow disturbance causes algae with poor attachment stability to detach, reducing the algal population. This maintains the algal population on the channel surface without external human intervention, ensuring that the water in the water conveyance channel is not negatively affected by algae.

This invention discloses a method for retrieving microcystin content in water using algal fluorescence spectroscopy. First, fluorescence spectral data of N algal solution samples with different concentrations are measured, and after preprocessing, the data are converted into a one-dimensional array M of length p. p Furthermore, all the corresponding one-dimensional arrays are combined into a matrix X. N The microcystin content of N algal solution samples was determined, forming a matrix Y. N Based on matrix X N With matrix Y N Establish model M ridge The fluorescence spectrum data of the sample to be tested were measured, and after preprocessing, they were converted into a one-dimensional array M of length p. px This is further transformed into matrix X. p Substitute into the established model M ridge In the model, the predicted values ​​of microcystin are automatically provided. Model M ridge During the modeling process, factors affecting fluorescence spectroscopy and algal growth can be incorporated to further improve model accuracy. This method is more accurate, simple, quick, and convenient, facilitating on-site monitoring and possessing significant practical value.

This invention provides a method for simultaneously increasing the biomass and fucoxanthin yield of *Phaeodactylum tricornutum*, utilizing a *Haloxylon ammodendron*-*Phaeodactylum tricornutum* symbiotic system to simultaneously enhance algal growth efficiency and the accumulation of the high-value product fucoxanthin. Specifically, *Haloxylon ammodendron* and *Phaeodactylum tricornutum* are co-inoculated in F / 2 medium at a bacterial-algal ratio of 10:1 to 100:1 and co-cultured under constant temperature and light for 16 days. This invention utilizes *Haloxylon ammodendron* and *Phaeodactylum tricornutum* to construct a stable and efficient algal-bacterial symbiotic system, which can simultaneously increase the biomass of *Phaeodactylum tricornutum* and the fucoxanthin content, providing a new method for the large-scale, low-cost production of fucoxanthin.

The present application belongs to the technical field of water treatment, and particularly relates to a device and method for simulating the process of the influence of algal growth and death on water quality. The device comprises: an algal growth and death simulation system for providing an algal growth and death simulation environment with controllable environmental variables; a monitoring system for recording relevant water quality parameters and algal parameters; and a data transmission and storage system for providing data transmission and storage for monitoring of the device. The device is suitable for various research needs, and can simulate water body environments in different environmental factors or eutrophication stages by adjusting parameters such as light, temperature, algal species and disturbance, and is suitable for various scenarios.

The application discloses an algal growth simulation method based on causal time lag optimization and PINN, belongs to the technical field of water eutrophication research, and comprises the steps of data acquisition and preprocessing, time lag optimization based on causal discovery, feature construction and data set division, construction of an algal growth mechanism module, construction of a parameter generation network, construction of a physical information neural network, stage-by-stage training, and model evaluation. The method significantly improves the model accuracy, and the net specific growth rate presents stable Monod saturation characteristics with the nutrient salt concentration, and the parameter change conforms to the ecology priori; sensitivity analysis can clearly indicate the dominant role of water temperature and wind speed on the maximum specific growth rate, thereby providing quantitative basis for water bloom early warning and nutrient salt reduction decision.

The invention relates to the technical field of intelligent spectrum regulation and control, and provides a system for promoting algae growth through a lighting system, and the system comprises a data storage module which is used for querying the basic information and association relation of each nutritional ingredient of spirulina on preset cooperative capability; the data analysis module is used for constructing a synergistic metabolic chain among the nutritional ingredients based on the basic information and the association relationship, and determining a balance condition of the synergistic metabolic chain; the spectrum customization module is used for distributing a spectrum band and a power proportion corresponding to the spectrum band for the collaborative metabolic chain on the premise of simultaneously meeting the incidence relation and the balance condition; the control module is used for controlling the starting, stopping, light intensity output and spectrum stability maintenance of the light source promotion module; and the light source promoting module is used for emitting a corresponding composite spectrum according to the spectrum band and the power proportion distributed by the spectrum customization module so as to promote the growth of the spirulina. The method can synergistically guarantee fast growth speed and high nutritional value of algae.