652 results about "Algae" patented technology

The invention discloses an offshore red tide multi-parameter real-time monitoring method and monitoring system based on a buoy array. The method comprises the following steps: S1, performing array deployment and topology configuration according to a sea area sensitivity degree, tide characteristics and a historical red tide trajectory; according to the invention, through risk differentiation buoy array deployment and redundancy topology, traditional isolated monitoring limitation is solved, and sea area full coverage and red tide diffusion tracking are realized; physical-chemical-biological multi-source sensing and in-situ detection are combined with data fusion, so that the problem of single parameter is solved, and the monitoring accuracy is improved; by means of liftable stratified sampling and in-situ algae species and toxicity analysis, the vertical monitoring blank is filled up, and the complete life cycle process of red tide from occurrence to regression is completely captured; through linkage of edge-cloud multi-model early warning and field equipment, a'monitoring-early warning-disposal 'closed loop is formed, and the red tide monitoring real-time performance and the emergency response capability are greatly improved.

The invention belongs to the technical field of microbial fermentation and food engineering, and discloses a fermentation method for enhancing the production capacity of schizochytrium limacinum phospholipid DHA and application, schizochytrium limacinum is subjected to fermentation culture for 32-60 h, and the addition of an organic nitrogen source and phosphate is optimized in the fermentation culture process; the formula of a seed culture medium for culturing schizochytrium limacinum is not changed, and only the formula of a fermentation culture medium for schizochytrium limacinum is changed. The invention provides a fermentation strategy for enhancing the production capacity of the schizochytrium limacinum phospholipid DHA, and the schizochytrium limacinum can obtain the phospholipid DHA with higher content by optimizing an organic nitrogen source and phosphate in a schizochytrium limacinum fermentation culture medium. According to the obtained schizochytrium limacinum grease, the total DHA content is obviously increased compared with that of a traditional fermentation strategy, and the proportion of phospholipid DHA is also remarkably increased. The regulation and control method is applied to preparation of schizochytrium limacinum algae powder, the schizochytrium limacinum algae powder rich in phospholipid DHA is obtained, and application of the schizochytrium limacinum algae powder in the field of aquatic feed is facilitated.

The invention discloses a bacterial strain for degrading aspartame, a bacterial-algae symbiotic system and application of the bacterial strain and the bacterial-algae symbiotic system, the bacterial strain is corn sphingomonas zeae NCU J1, and the preservation number of the bacterial strain is CCTCC (China Center for Type Culture Collection) NO: M 20251462. And an algal-bacterial symbiotic system is constructed by adopting an oriented symbiotic combination of the corn sphingomonas NCU J1 and the chlorella sp. The corn sphingomonas NCU J1 can metabolize an artificial sweetening agent aspartame and degradation products thereof, metabolism complementation can be achieved through an algal-bacterial symbiotic interface, and bacteria preferentially promote aspartame to be subjected to photohydrolysis to generate degradation products such as diketopiperazine derivatives. The microalgae synchronously start isomerism enzymatic reaction to convert degradation products such as diketopiperazine derivatives into low-toxicity products, the risk of secondary pollution is reduced by 40% or above compared with that of a traditional physical and chemical method, 150 mg / L aspartame can be efficiently degraded within 2 days, generation of derivatives of aspartame can be greatly reduced, secondary pollution is reduced, and the method is suitable for industrial production. And the method has a good application prospect in the aspect of rapidly treating aspartame-containing wastewater.

The invention discloses a culture tail water resource treatment system based on pearl mussels, which belongs to the technical field of aquaculture and water environment protection and comprises a culture pond, a plurality of first treatment ponds, at least one second treatment pond, a third pipeline and a control unit. Each first treatment pond is connected with the culture pond through a first pipeline, activated sludge is laid in each first treatment pond, and an aeration device and an adsorption filter with the height capable of being adjusted through a lifting mechanism are arranged on each first treatment pond. The second treatment pond is connected with the first treatment pond through a second pipeline, the interior of the second treatment pond is divided into a phycomycete symbiotic area and a water quality purification area, the water quality purification area sequentially comprises a supporting layer, an adsorption layer and a substrate layer from bottom to top, and various aquatic plants are planted in the substrate layer. The third pipeline is connected with the second treatment pond and the culture pond to form a closed water treatment circulation loop. The control unit is responsible for monitoring and regulating the operation state of the system. According to the system, efficient purification and resource recovery of aquaculture tail water are realized through multi-stage treatment and cyclic utilization.

The invention relates to the technical field of environmental monitoring and water ecological safety, in particular to a eukaryotic algae outbreak early warning method and system based on genus-level specific recognition. The method comprises the following steps: collecting a water body sample at a monitoring position according to a preset sampling plan, collecting an environment measurement value, and respectively obtaining environment parameter data, a water sample sampling identifier and a sampling timestamp; extracting nucleic acid from the water sample at the monitoring position based on the water sample sampling identifier, performing targeted amplification, and performing high-throughput sequencing at the same time to obtain eDNA original sequencing data; therefore, by constructing the eukaryotic algae outbreak early warning process based on genus-level specific recognition, the problems that in a traditional method, sampling disturbance is uncontrollable, sequence judgment precision is insufficient, trend recognition is lagged, and an early warning link is not transparent are solved, and the accuracy, stability and traceability of early judgment of algae outbreak are improved.

The invention belongs to the technical field of water ecology risk early warning, and provides an algal bloom risk remote sensing intelligent identification method and system, and the method comprises the steps: obtaining remote sensing image data, meteorological data and water quality data of a target region, and carrying out the preprocessing; performing frequency domain feature extraction to generate a three-dimensional frequency domain feature vector; fusing the global feature representation obtained by modeling and the generated three-dimensional frequency domain feature vector by using a multi-task deep learning network to obtain a feature map; obtaining an algae bloom binary segmentation probability graph and a continuous value distribution graph of chlorophyll a concentration based on the characteristic graph; generating an image semantic embedding vector by utilizing a semantic embedding head, and performing semantic alignment on the image semantic embedding vector by adopting a pre-trained knowledge graph to generate a research and judgment information text; and performing cross validation on the study and judgment information text, the algae bloom binary segmentation probability graph and the continuous value distribution graph of the chlorophyll a concentration to obtain a final algae bloom risk judgment result. According to the invention, the algal bloom risk remote sensing intelligent identification is realized.

The invention discloses an algae species with both efficient denitrification and high free ammonia tolerance and application thereof. The invention provides an inflatedfruit senna herb which is preserved in China General Microbiological Culture Collection Center (CGMCC) on December 11, 2024, and the preservation number of the inflatedfruit senna herb is CGMCC No.46280. The inflatedfruit senna herb has the advantages that the inflatedfruit senna herb is preserved in the China General Microbiological Culture Collection Center (CGMCC); the inflatedfruit senna provided by the invention has efficient assimilation removal capability on NO3 <->-N, NO2 <->-N and NH4 < + >-N, and has relatively strong tolerance on high-concentration free ammonia (FA). A bacterial-algae symbiotic system is constructed by the inflator and activated sludge, and is coupled with a dynamic membrane process, so that the denitrification efficiency of the nitrogen-containing wastewater can be remarkably improved, the addition of exogenous organic matters, the aeration energy consumption and the N2O emission are reduced, meanwhile, high-value microalgae biomass is obtained, and efficient, stable and resourceful treatment of the nitrogen-containing wastewater is realized.

The invention belongs to the technical field of organic matter extraction, and particularly relates to a green directional extraction and purification method for haematococcus astaxanthin, which comprises the following steps: (1) mixing dried haematococcus powder and a composite pretreatment agent according to a mass ratio of 1: (8-15), and stirring to obtain a pretreated algae solution; (2) treating the pretreated algae liquid through ultrahigh-pressure microjet equipment to obtain wall-broken slurry; (3) mixing the wall-broken slurry and a composite extraction agent according to a volume ratio of 1: 3-1: 5, and performing extraction separation to obtain an astaxanthin extraction phase; (4) carrying out selective adsorption on the astaxanthin extraction phase through an adsorption column filled with a molecular imprinting adsorbent; (5) collecting eluent by adopting a gradient elution method; and (6) performing vacuum concentration on the eluent, and performing spray drying to obtain an astaxanthin product. According to the method, the astaxanthin extraction efficiency and the product purity are remarkably improved, meanwhile, the energy consumption is reduced to the maximum extent, toxic solvent residues are avoided, and the stability of the astaxanthin is effectively protected.

The embodiment of the utility model provides an algal-bacterial symbiotic membrane aeration bio-membrane reactor, the algal-bacterial symbiotic membrane aeration bio-membrane reactor comprises a container, a membrane assembly, a carbon dioxide supply device, an oxygen supply device and a light source, the membrane assembly is arranged in the container, the membrane assembly comprises a first membrane wire group and a second membrane wire group which are arranged at an interval, the carbon dioxide supply device is connected with the air inlet of the first membrane filament group to provide carbon dioxide for the first membrane filament group, the carbon dioxide is connected with the air inlet of the second membrane filament group to provide oxygen for the second membrane filament group, and the light source irradiates the first membrane filament group. The bacteria-algae symbiotic membrane aeration bio-membrane reactor disclosed by the embodiment of the utility model has a relatively strong sewage treatment effect.

The invention discloses a phycomycete symbiotic system and application of the phycomycete symbiotic system in treatment of aquaculture tail water, and belongs to the technical field of tail water treatment. The phycomycete symbiotic system comprises chlorella, scenedesmus and activated sludge, and the initial inoculation dry weight ratio of the chlorella to the scenedesmus to the activated sludge is 1: 1: 6. And exogenously adding octanoyl-L-homoserine lactone or tetradecanoyl-L-homoserine lactone into the phycomycetes symbiotic system, so as to construct the phycomycetes symbiotic system with enhanced functions. On the basis of a mixed algae-bacteria symbiotic system with an optimized ratio, directional enhancement of functions is realized by virtue of quorum sensing signal molecules, the stability and resistance gene interception capability of the quorum sensing signal molecules under the stress of antibiotics are verified, and finally efficient purification of the aquaculture tail water is realized. According to the invention, the blank of the prior art in the aspects of advanced regulation and control of a phycomycete synergistic mechanism and synergistic treatment of emerging pollutants is filled up.

The invention relates to the technical field of marine planting, and discloses a seaweed planting device for marine ecological restoration, which comprises a frame, a buoyancy device is arranged above the frame, an attachment plate is arranged in the frame through an adjusting mechanism, and the adjusting mechanism is used for adjusting the angle of the attachment plate. A distance measuring mechanism is arranged on the front side wall of the attachment plate, an anchoring device is arranged at the bottom end of the frame, the adjusting mechanism comprises a first pull rod connected into the frame in a sliding mode, a fluted disc is fixedly connected to the end, close to the attachment plate, of the first pull rod, and the fluted disc is connected into the frame in a sliding mode. Through the structural arrangement of the adjusting mechanism, the problems that the spatial position cannot be dynamically adjusted according to the illumination condition, the illumination of algae on the lower layer of the base plate is insufficient, the growth of the algae is influenced, meanwhile, the wave impact resistance of the attachment plate is poor, the disturbance of sea waves and strong water flow is difficult to resist, and algae seedlings are difficult to stably attach are solved.

The invention discloses an environment-friendly closed-loop ecological culture method for colored pearls, which belongs to the technical field of aquaculture and comprises the following steps: S1, selecting and culturing high-quality pearl mussels to form high-quality pearl mussels; s2, cooperatively culturing high-quality pearl mussels, fishes, algae and microbial communities; s3, according to the color requirement of the high-quality pearl mussels, algae, plankton, vegetable protein and a microorganism culture solution are used for preparing feed, the high-quality pearl mussels are fed, and the color and glossiness of pearls are regulated and controlled; s4, collecting breeding data in real time, and adjusting collaborative breeding parameters; according to the color requirement of high-quality pearl mussels, the feed is prepared from algae, plankton, vegetable protein and a microorganism culture solution, the high-quality pearl mussels are fed, nacre layer components secreted by pearl sacs in mussel bodies are affected through natural pigment components in the feed, and therefore the color and glossiness of pearls are regulated and controlled. The active regulation and control of the pearl color and glossiness can be realized.

The utility model belongs to the technical field of marine equipment, and particularly relates to a UV lamp device suitable for underwater biological attachment prevention, the UV lamp device comprises a waterproof shell, a lamp bead assembly and a circuit board assembly, and the lamp bead assembly and the circuit board assembly are connected to the interior of the waterproof shell in a sealed mode; the waterproof shell comprises a glass cover and a sealing outer shell, external threads are designed at the front end of the sealing outer shell, the glass cover and the sealing outer shell are fixed through a threaded sleeve, and the sealing outer shell is connected with an end cover. The method has the advantages that adhesion of algae and other plant microorganisms is prevented through ultraviolet light, the method is not affected by the shape of equipment surface materials and the like, frequent maintenance is not needed, and the method is friendly to the marine environment.

The invention provides a fish stress behavior detection method in a red tide algae environment, and the method comprises the steps: collecting a plurality of groups of target images at a plurality of depth positions from a water surface to a pool bottom, and extracting the visual features of the target images based on a detection model; extracting a target fish school in the detection target image based on the detection model, identifying a motion trail of the target fish school, and extracting multiple behavior characteristics of the target fish school from the motion trail; the visual features, the multiple behavior features and the environment parameters in the red tide algae environment form a fusion sequence, and a fusion feature vector of the fusion sequence is extracted; and inputting the fusion feature vector into a classification model to obtain the stress level of the target fish school in the red tide algae environment. The invention further provides a fish stress behavior detection method, device and equipment in the red tide algae environment and a medium.

The invention relates to channel slope algae removal equipment and an algae removal method thereof. The channel slope algae removal equipment comprises an algae removal secondary vehicle, a suction primary vehicle and a suction hose, one end of the suction hose is connected with the algae removal secondary vehicle, and the other end is connected with the suction primary vehicle; the algae removal sub-vehicle comprises a crawler frame with power and an algae removal box body mounted on the crawler frame; the center of the top of the algae removal box body is communicated with the suction hose; a water pump is arranged at the front water inlet end of the crawler frame; the output end of the water pump is connected with jet water pipes; the spraying water pipe is arranged towards the water leaving end of the front side of the crawler frame; water level sensors are arranged at the head and tail ends of the side surface of the water inlet end of the crawler frame. The walking route of the crawler frame is automatically corrected through the two water level sensors; the water pump can wash the crawler frame at the water leaving end, damage to a transmission structure caused by algae can be avoided, and the lubricating effect is achieved. According to the algae removal method, the algae removal trolley can be guided to run along the waterline, and the algae removal effect is stable.

The invention discloses a wastewater treatment system and method for strengthening a biochemical coupling phycomycete fixed bed. According to the invention, the phycomycete immobilized rubber balls are combined with the multi-stage biological rope reactor, so that staged directional removal of pollutants is realized. The system comprises adsorption-embedding co-immobilization phycomycete gel balls, an active fiber biological rope carrier and a multi-stage baffling reaction unit. According to the rubber ball, a MgAl-LDO and zeolite composite material is used for embedding bacteria and algae, and a biological rope carrier is used for fixing microorganisms to form an anoxic-aerobic dynamic environment. According to the system, the removal effects of NH4 < + >-N, TP, COD and NO3-N are improved to different degrees, and the system is high in anti-interference performance and particularly suitable for aquaculture wastewater, low-C / N-ratio wastewater and decentralized sewage treatment scenes.

The invention belongs to the technical field of microorganisms, and particularly relates to application of marine phycobacterium LZ-14T in production of indole-3-acetic acid. According to the present invention, the interphycobacterium LZ-14T is named as Maricatenella alexandrii gen. Nov., sp. Nov. The present invention discovers that the interphycobacterium LZ-14T can achieve the effect of significantly inhibiting the synthesis of the PSP toxin by releasing the IAA signal molecule under the condition of promoting the growth of the host algae. The new discovery can provide a new theoretical basis for analyzing the generation mechanism of paralytic shellfish poison of alexandrium chainchain and exploring scientific prevention and control of red tide. The invention also finds that the IAA produced by the phycobacterium LZ-14T can inhibit the growth of escherichia coli, and the result lays a foundation for the preparation of new antibacterial drugs.

The invention discloses a shrimp seed breeding method for regulating and controlling water quality through microalgae and probiotics under specific illumination. According to the technical scheme, the shrimp seed breeding method is characterized by comprising the following steps that firstly, a seedling breeding workshop is built; step 2, microalgae-probiotic culture: selecting microalgae and probiotic types beneficial to shrimp seedling culture, and culturing to obtain a microalgae solution and a probiotic solution; 3, seedling raising and putting preparation; step 4, putting shrimp larvae; step 5, putting of algae-probiotics; step 6, seedling culture illumination control; 7, feeding the young shrimps with bait; 8, monitoring and regulating water quality; and 9, evaluating the young shrimps out of the pond. According to the method, illumination is precisely controlled, the growth environment of microalgae and probiotics is optimized, and the synergistic effect of the microalgae and probiotics in the aspects of water purification, nutrition supply, disease prevention and control and the like is fully exerted, so that the water quality of penaeus vannamei larvae is improved, the survival rate and health condition of the penaeus vannamei larvae are improved, and the survival rate of penaeus vannamei larvae is increased. And a good foundation is laid for large-scale and high-efficiency culture of the penaeus vannamei.

The invention provides a building crack detection device and method, and belongs to the technical field of building crack detection. Comprising a left movable cover and a metal base, a right positioning base is fixedly installed at the top of the metal base, a bottom supporting strip is fixedly installed at the bottom of the left movable cover, clamping grooves are formed in the two sides of the front end of the bottom supporting strip and the two sides of the front end of the left movable cover, and a clamping frame is fixedly installed on the front end wall of the right positioning base. Mechanical structures such as the cleaning assembly, the drainage assembly and the driving motor are arranged to drive a brush to clean obstacles such as algae in a reciprocating mode, meanwhile, liquid water discharged by a turbine is used for flushing and washing falling objects, then the drainage assembly discharges the obstacles according to the Bernoulli principle, and a three-way valve can discharge water in a detection area after being connected with high-pressure gas. During detection, after the device is lowered, shelters are cleaned and impurities are discharged, the laser detector scans the width, the depth and the like of the crack, the problems of manual subjective operation, shelters and water interference are solved, and the detection precision and standardization are improved.

The invention discloses an algae-based iron-carbon catalyst as well as a preparation method and application thereof, and relates to the technical field of new material research and development and sewage treatment. The preparation method comprises the following steps: mixing ferrocene, diatomite and a solvent to obtain a mixed solution; adding a hydrogen peroxide solution into the mixed solution, and then heating for reaction to obtain an intermediate; and roasting the intermediate to obtain the algae-based iron-carbon catalyst. According to the invention, ferrocene and diatomite are used as raw materials, and the high-performance algae-based iron-carbon catalyst is prepared through simple solvothermal reaction and roasting treatment. The obtained algae-based iron-carbon catalyst is stable in structure, high in activity and wide in applicable pH range in a persulfate oxidation system, and can be used for activating persulfate to degrade antibiotic pollutants in water.

The invention discloses a marine ranch carbon sink breeding device and method, and belongs to the technical field of marine fishery. Wherein the culture device adopts a modular design of combining vertical layering and horizontal partitioning, and comprises an upper-layer algae culture module, a middle-layer fish culture module, a bottom-layer shellfish culture module and a seabed carbon deposition auxiliary module, and all the modules can be flexibly combined according to the sea environment. Breeding parameters are regulated and controlled in real time through the intelligent monitoring system, and efficient fixation and storage of carbon dioxide are achieved through the biological carbon fixation principle. The breeding method comprises the whole process of site selection, module assembling and putting, ecological regulation and control and carbon sink metering. The system has a carbon sink function and fishery output benefits, solves the problems of ecological imbalance and difficult carbon sink metering of a traditional breeding mode, and provides a standardized and intelligent solution for marine ranch carbon sink breeding.

The invention provides an unmanned water body ecology detection and treatment system, which comprises an unmanned water surface carrier platform, a multi-dimensional space-time sensing module, a predictive decision processing module, a preventive treatment execution module, a data link module and a shore-based control center, the invention provides a multi-factor fusion decision-making mechanism based on a prediction result and real-time perception, a differentiated and prospective treatment strategy can be automatically generated and executed according to the potential risk level of algae outbreak, and intelligentization and precision of treatment actions are realized. By constructing a model iterative optimization module of the shore-based control center, a complete closed-loop intelligent system capable of self-learning and sustainable evolution is formed, the accuracy and adaptability of long-term operation of the system are ensured, the manual operation and maintenance cost is remarkably reduced, and the system is suitable for large-scale popularization and application. And a systematic technical solution is provided for refined and automatic ecological management of a large-range water area.

The invention belongs to the technical field of corrosion inhibition of ocean engineering structure metal materials, and particularly relates to an anti-corrosion, anti-fouling and antibacterial multifunctional Z-type heterojunction photo-anode and a preparation method thereof. The photoanode is of a Z-type heterojunction structure, and selective recombination of electron-hole pairs can be achieved, so that electrons with higher reducing capacity are reserved on a conduction band of one semiconductor, and holes with higher oxidizing capacity are reserved on a valence band of the other semiconductor. Photoelectrons are effectively injected into protected metal to realize photoelectric cathode protection; meanwhile, strong oxidizing holes and generated active oxygen species (such as. OH) can efficiently degrade organic matters and biological membranes, kill bacteria and inhibit algae, and the anti-corrosion, anti-fouling and anti-algae functions are synchronously achieved. The problem that a traditional photo-anode is single in function is solved, and the photo-anode has the advantages of being high in sunlight utilization rate, high in oxidation-reduction capacity, good in stability and the like and can be widely applied to the fields of ocean engineering corrosion prevention, medical instrument surface treatment, water treatment and the like.

The invention belongs to the technical field of haematococcus separation, and particularly relates to a method for sequentially separating polysaccharide and phycoerythrin from a haematococcus degreased algae residue water extract, and the method comprises the following steps: S1, pretreatment, S2, deep flocculation and primary separation of polysaccharide, and S3, specific precipitation of phycoerythrin. According to the method, a set of sequential separation process is constructed by adopting a self-made hydrophobic flocculant and a composite precipitation inducer, so that a high-purity polysaccharide product and a high-activity phycoerythrin concentrated solution can be synchronously obtained from a haematococcus degreased algae residue water extract. According to the method, deep flocculation of polysaccharide, specific precipitation of phycoerythrin and respective subsequent refining steps are integrated into an ordered whole process, so that the product in the previous step can be directly treated in the next step in an optimal state, and the loss possibly caused by storage and transfer of intermediate materials is reduced; through condition matching and cooperation among the steps, the purity of the final product is improved.

The utility model relates to a noctilucent algae feeding and breeding display cabinet which comprises a cabinet frame and a display cylinder, the cabinet frame is cubic, and the display cylinder is located in the middle of the cabinet frame. The top surface of the display cylinder is open, an illuminating lamp and a liquid dropping device are fixedly arranged at the top of the cabinet frame, the liquid dropping device comprises a liquid storage box, a pump machine and a liquid dropping head, a liquid dropping opening of the liquid dropping head corresponds to the open surface of the top of the display cylinder, the liquid dropping head is connected with a liquid outlet of the pump machine through a pipeline, and a liquid inlet of the pump machine is connected into the liquid storage box through a pipeline. An existing water body stirring scheme is replaced with a liquid dropping stimulation mode, so that the stimulation force is easy to control, local continuous light emission of the noctilucent algae can be maintained, the continuous ornamental effect is achieved, long-time waiting is not needed, and the ornamental effect is good. In addition, by matching with an illuminating lamp, breeding and breeding operation of the noctilucent algae is facilitated, that is, the display cylinder can be used as a culture cylinder at the same time.

The present application provides a kind of bacteria-algae biological turntable and low-carbon efficient wastewater treatment device, the bacteria-algae biological turntable includes: support disc body;Bacteria disc, the bacteria disc is set on the opposite two sides of the support disc body;Microalgae disc, the microalgae disc is set on the bacteria disc, to the bacteria disc is clamped between the microalgae disc and the support disc body.This bacteria-algae biological turntable contains bacteria disc and microalgae disc, while effectively removing pollutants, can effectively reduce the carbon emission of wastewater treatment industry, in addition, due to the oxygen production of microalgae, for aeration process also has certain optimization.

The invention discloses an algae removal control method and system for a cooling water system of a cooling unit, and the method comprises the steps: calculating a reference dosing duration according to the total water capacity of the system, a preset target agent concentration and the dosing rate of dosing equipment; the actual load, the cooling water temperature and the environment temperature of the cooling unit are collected in real time; according to the actual load and the cooling water temperature, whether the dosing condition is met currently is judged; and after it is judged that the dosing conditions are met, based on a pre-constructed calculation model, the corrected dosing duration under the current working condition is obtained through calculation with the reference dosing duration, the actual load rate of the cooling unit, the temperature correction coefficient corresponding to the cooling water temperature degree and the environment correction coefficient corresponding to the environment temperature as calculation parameters. According to the method, a multi-parameter coupling calculation mode is adopted, so that the corrected dosing duration can closely follow the fluctuation of actual working conditions, the stability of the algae removal effect is ensured, and biological slime adhesion and heat exchange efficiency reduction caused by insufficient chemicals are effectively prevented.

The utility model discloses a sequential bacteria-algae coupling biogas slurry treatment device, and belongs to the technical field of biogas slurry treatment. The device comprises a biogas slurry tank, a pretreatment tank, an aerobic tank and a disinfection tank which are sequentially arranged, an interlayer I is arranged between the biogas slurry tank and the pretreatment tank, an interlayer II is arranged between the pretreatment tank and the aerobic tank, an interlayer III is arranged between the aerobic tank and the disinfection tank, and a water outlet I is formed in the bottom of the disinfection tank; the first water outlet is kept in an open state, biogas slurry in the biogas slurry tank permeates into the pretreatment tank through the first interlayer, permeates into the aerobic tank through the second interlayer, permeates into the disinfection tank through the third interlayer and flows out of the first water outlet, and the biogas slurry is used for culturing functional microalgae after being treated. The biogas slurry treatment device is ingenious in structural arrangement and simple in treatment process, and can effectively realize biogas slurry treatment by arranging the treatment ponds with different functions.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for treating wastewater from industrialized aquaculture. This invention combines physical, biological, and chemical treatment methods, enabling efficient wastewater treatment in a short time, reducing the footprint and operating costs of treatment equipment, and exhibiting high economic efficiency and practicality. The combined use of Spirulina with Bacillus licheniformis, Bacillus subtilis, and Micrococcus luteus forms a stable algae-bacteria symbiotic system in the aquatic environment, accelerating the removal of nitrogen and phosphorus from the aquaculture wastewater and effectively reducing the chemical oxygen demand (COD). After treatment using this method, the wastewater reuse rate is no less than 80%, and the treated wastewater quality meets national discharge standards.

The application discloses a gradient water-permeable type flow guide belt with surface algae resistance and lower layer drag reduction, which comprises a floating body assembly, an upper algae resistance skirt curtain connected below the floating body assembly, a lower gradient water-permeable net body connected below the upper algae resistance skirt curtain, and a segmented counterweight chain connected below the lower gradient water-permeable net body. Tensioned cables are distributed on the floating body assembly at intervals, the lower ends of the tensioned cables are connected with the segmented counterweight chain, anchor assemblies are arranged on the segmented counterweight chain at least near both ends of the segmented counterweight chain, and the lower gradient water-permeable net body comprises at least two water-permeable net layers arranged in sequence along the depth direction, and the porosity of each water-permeable net layer increases from top to bottom. The gradient water-permeable type flow guide belt has the advantages that the partition structure of upper algae resistance and lower water permeability can significantly reduce the water resistance area of the middle and lower layers while maintaining the surface algae resistance and flow guiding capacity; and the structure design of the gradient water-permeable net body with the porosity increasing from top to bottom can make the water power transition more gentle and reduce the stress concentration of the single net body or the whole skirt curtain.