925 results about "Sedimentation" patented technology

The invention relates to the technical field of sewage treatment, in particular to a dynamic simulation method for a lake and reservoir sewage sludge deposition process. The method comprises the following steps: collecting lake and reservoir hydrological station data, carrying out abnormal value filtering and missing value completion, generating a complete hydrological sequence, carrying out water flow state subdivision to obtain flow state hierarchical data, reconstructing a multi-layer hydrodynamic field, forming a hydrological dynamic field set, carrying out suspended matter analysis, and obtaining a hydrological dynamic field model; the method comprises the following steps of: extracting sewage sludge data, deconstructing transportation characteristics of the sewage sludge data, generating transportation dynamic data, performing water body stress tensor decomposition to obtain stress distribution data, performing substance transportation simulation on a complete hydrological sequence by using the stress distribution data, establishing a multi-scale sedimentation dynamic model, acquiring water body sedimentation change data in real time, comparing the water body sedimentation change data with the model, and if inconsistency exists, judging whether the water body sedimentation change data is consistent or not. If yes, the model is finely adjusted in real time, and an optimized multi-scale deposition dynamic model is generated. The more accurate dynamic simulation method for the lake and reservoir sewage and sludge deposition process is achieved.

The invention discloses a high-precision flow online monitoring device and method for a siltation section, and belongs to the technical field of hydrological monitoring. The device comprises a sensing terminal, an edge terminal and a mounting mechanism, the sensing terminal is integrated with an upper and lower section layered speed measurement module, an underwater distance measurement module, a first absolute pressure type water level measurement module and an attitude and temperature sensor, and vertical section flow velocity data is obtained by receiving water body reflection signals in a time-sharing manner; and the dynamic deposition section area is corrected in real time in combination with ultrasonic ranging. And the edge terminal compensates water level measurement data by using atmospheric pressure, and calculates the flow through fusion of a telemetering module. The installation mechanism supports fixed or telescopic installation, and the height of the installation mechanism is automatically adjusted according to the distance between a deposition layer and equipment. The method comprises the steps of dynamically correcting the section, calculating the flow through layered integration and compensating errors of multiple sensors, the problems of large area deviation, high operation and maintenance cost and the like caused by sedimentation in a traditional flow measurement technology are solved, and high-precision online monitoring under the high-sand-content complex flow state is achieved.

The invention discloses a large and medium shallow lake water quality improving method based on hydrodynamic optimization and vegetation community restoration, and relates to the technical field of lake treatment and ecological restoration. Comprising the following steps: step 1, reducing lake-entering pollution load; arranging an in-and-out river mouth sediment settling reservoir to increase a river mouth water-passing section; 2, high-concentration water entering the lake and low-concentration water in the lake body are isolated; remodeling a near-shore area terrain of a shore zone where the lake-entering river channel is located, and arranging an ecological submerged beach, a drainage groove and a mud flow capturing groove; 3, improving the habitat of the aquatic plants on the large water surface; designing matrix purse seine units for flow choking and wave dissipation; a plurality of matrix purse seine units are designed to spatially separate a large water surface, and floating plants are fixed in a local area by using the matrix purse seine units; 4, preparing an aquatic plant community; and recovering pioneer floating-leaf plants and submerged plants. According to the method, a hydrodynamic optimization project and a vegetation community reconstruction project are combined, the water quality is improved, and the ecological system structures of large and medium-sized shallow lakes are improved.

The invention discloses a rhizosphere deposited carbon flux real-time monitoring method adopting a sensor array, and relates to the technical field of soil carbon cycle monitoring, and the method comprises the steps: determining a layered sampling depth and a horizontal concentric circle partition range based on the three-dimensional distribution characteristics of a target plant root system, and mapping the layered sampling depth and the horizontal concentric circle partition range to a preset three-dimensional grid coordinate system; gas sensors and environmental parameter sensors are deployed according to root system partitions, and a multi-dimensional sensor array is constructed. Through the three-dimensional grid coordinate system and the root system density gradient model, accurate spatial mapping of rhizosphere carbon flux is realized, high matching of sensor layout and root system biomass distribution is ensured by utilizing division of vertical layering and horizontal concentric circle partition, and the gas sensor and the environmental parameter sensor are cooperatively deployed, so that the reliability of the system is improved. The device can capture instantaneous changes such as root exudate pulse and microbial respiration, generates a continuous and consistent carbon flux data set, and provides a high-resolution dynamic observation basis for researching plant-soil-microbial interaction.

The invention discloses a flocculation treatment device and method for removing high turbidity of a water sample. The method comprises the following steps: monitoring an inflow turbidity parameter in real time, continuously collecting original optical characteristic data of water through an optical sensor array, and calculating a turbidity fluctuation rate parameter after noise reduction treatment; carrying out graded rotational flow mixing treatment, forming a pressure gradient through three stages of tapered rotational flow pipes in sequence, activating an ultrasonic frequency field, and synchronously adding main and auxiliary flocculants; the method comprises the following steps: introducing a water sample into a multi-stage gradient flocculation reaction zone, and sequentially executing turbulent flow enhanced flocculation, slow stirring flocculation and pulsed electric field assisted flocculation to form a floc structure with different particle size distribution; running parameters of a sedimentation module are adjusted according to real-time effluent turbidity feedback, and the inclination angle of an inclined plate assembly and the opening degree of a mud discharging valve are dynamically adjusted; a parameter set is updated through a prediction model based on periodically collected system operation data, a closed-loop optimization control strategy is formed, the adaptability to extreme turbidity is enhanced, the solid-liquid separation efficiency is improved, the overall energy consumption is reduced, and the efficient and stable requirements of emergency treatment are met.

The invention provides a multi-point geostatistics sedimentary microfacies prediction method based on deep learning. The method specifically comprises the steps that geological constraint conditions such as a sedimentary mode and a phase sequence combination rule are converted into regularized tensors capable of being embedded into a neural network; a convolutional neural network and graph neural network mixed framework is adopted, and local microscopic features and a regional macroscopic distribution mode of the sedimentary microfacies are synchronously extracted; performing fine adjustment on a target work area based on the pre-training model, and enhancing the generalization ability of the model in combination with an adversarial sample generation technology; and generating a three-dimensional sedimentary microfacies distribution model with confidence evaluation. According to the technical scheme, coupling optimization of geostatistics spatial correlation constraint and deep learning feature extraction is innovatively realized; performing nonlinear mapping and collaborative representation on the multi-source data in the implicit feature space; and carrying out geological process dynamic evolution visualization on the sedimentary microfacies prediction result.

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The utility model discloses a feces collection and discharge device for a pig farm in a Poyang Lake region. The feces collection and discharge device for the pig farm in the Poyang Lake region comprises a film covering collection system and a pollutant treatment efficient degradation system. The covering film collecting system comprises a primary settling zone, an intermediate settling zone and an ultimate settling zone which are arranged in sequence. The efficient degradation system for pollutant treatment adopts an S-shaped treatment mode and specifically comprises three parts, namely a head section, a middle section and a tail section. According to the excrement collecting and discharging device for the pig farm in the Poyang Lake area, an anaerobic method is adopted for removing COD and SS, the primary removal effect is determined by the anaerobic depth and time, the sediment amount in the primary sedimentation area is the largest, solid sediment can be discharged in time by arranging the sediment discharging port, the effective excrement treatment capacity of the device is guaranteed, and the economic benefit is improved. Pollutants can be promoted to be degraded layer by layer, and finally the emission standard is achieved.

The invention relates to the technical field of oil mist separation, in particular to a machining oil mist separation real-time monitoring system which comprises a particle trapping monitoring module, an airflow adjustment control module, a particle path judgment module, a boundary recognition analysis module and a separation efficiency feedback module. According to the method, through combined monitoring of the oil mist particle concentration and the airflow speed, dynamic analysis of the particle trapping efficiency and deviation direction identification are achieved, the diffusion trend identification precision is improved, the guide angle is introduced to be compared with the wind speed parameter, the insufficient response area is defined, the adjustment precision and real-time performance are enhanced, and the particle sedimentation direction is classified and identified; the method comprises the steps of constructing a structured motion path, locking space abnormal behaviors, fusing visible light and near-infrared refraction angle changes, identifying particle boundary features, improving the abnormal distribution analysis capability, carrying out superposition judgment on boundary abnormality and an adjustment response region, evaluating the separation stability, and feeding back separation capability distribution in a monitoring region. And the trend tracking and separation efficiency analysis capability is enhanced.

The invention relates to the technical field of settlement monitoring, in particular to embedded type ground settlement monitoring equipment which comprises a settlement pipe, a magnetic ring and a displacement sensor, four sliding grooves are formed in the outer wall of the settlement pipe at equal intervals, sliding blocks are slidably connected to the inner sides of the four sliding grooves, the magnetic ring is slidably connected to the outer wall of the settlement pipe, and the sliding blocks are fixedly connected to the inner side of the magnetic ring. Through the arrangement of the conical block, the insertion rod, the limiting mechanism, the removing mechanism and other structures, in the monitoring equipment installation process, after the periphery of a sedimentation pipe is backfilled, the insertion rod on the magnetic ring is automatically extruded out and inserted into surrounding backfilled soil, then the limiting rod is pushed out of a sliding groove through the removing mechanism, and the magnetic ring can be installed conveniently. And the sliding positions of the limiting rod and the inserting rod are limited, so that the downward sliding limitation of the magnetic ring is relieved, the displacement sensor moves to the side of the magnetic ring, the magnetic ring is quickly mounted, the difficulty in positioning and fixing in the mounting process of the magnetic ring is avoided, and the mounting efficiency is improved.

The invention discloses a tunnel base soil body active drainage system device and method based on drainage nails, and relates to the technical field of tunnel construction. The device comprises capillary adsorption tube wells, side ditches and a pumping drainage device, the capillary adsorption tube wells are arranged on the two sides of the bottom of a tunnel, and the multiple capillary adsorption tube wells are arranged in the longitudinal direction of the tunnel; each capillary adsorption tube well is arranged in the vertical direction and extends into a base soil body below a tunnel bottom, each capillary adsorption tube well comprises a waterproof tube section, a water seepage tube section and a bottom precipitation tube section which are sequentially arranged, and every two adjacent tube sections are connected through a plugging connector. The side ditches are arranged on the two sides of the railway ballast and used for gathering and discharging water in the capillary adsorption tube wells. And the pumping and draining device is used for pumping and draining water in the capillary adsorption tube well into the side ditch. A natural filter layer can be formed under the capillary action of the water seepage pipe section, silt is effectively prevented from inrush, and therefore the method is suitable for long-term water pumping and drainage construction in the heavy haul railway base operation period, and frequent pipe well cleaning does not need to be carried out.

The invention relates to the technical field of coastal zone renovation and repair, in particular to a siltation promotion device for coastal zone renovation and repair, which comprises a siltation promotion assembly and a caisson which are sequentially arranged from top to bottom, the siltation promotion assembly comprises a plurality of siltation promotion modules which are connected through side edges, and the top side of the siltation promotion assembly is used for being fixedly connected with a coast; each siltation promotion module comprises a frame and a plurality of anti-flow plates, the multiple anti-flow plates are sequentially arranged in the frame from top to bottom, the two ends of each anti-flow plate are rotationally connected with the two opposite sides of the frame correspondingly, and every two adjacent siltation promotion modules are rotationally connected through one side edge of the frame; a sedimentation cavity is formed in the top of the caisson, a permeable material is arranged in the sedimentation cavity, flow guide holes penetrating through the two sides are formed in the upstream face and the downstream face of the caisson correspondingly, and the bottom side of the siltation promotion module is connected with the caisson and located above the sedimentation cavity; the siltation promotion device is formed in a splicing mode, the siltation promotion device can be well suitable for complex terrains, and the anti-flow plate is arranged to effectively resist water flow impact.

A device for spreading or colouring and for determining a sedimentation rate comprises a first group (4) arranged so as to sample a blood sample from a tube and to carry out a smear test on this sample, and a second group (6) arranged so as to sample a blood sample from a tube and to carry out a sedimentation rate determination. The device comprises at least one sampling member (8) which could be controlled for an operation by the first group (4) and an operation by the second group (6) for sampling a blood sample so that a sample sampled for the first group (4) is not used by the second group (6), and that a sample sampled for the second group (6) is not used by the first group (4), the second group (6) being provided with a sensor (20) comprising an infrared light source (12) and an optical sensor (14) arranged substantially opposite one another around a tube (16) connected to an outlet end of the at least one sampling member (8) so that the light emitted by the infrared light source (12) reaches the optical sensor (14) after having crossed said tube (16). This device further comprises a converter (10) arranged so as to receive one or more light-transmission measurement(s) from the optical sensor (14) and to determine a sedimentation rate.

The invention discloses a penaeus vannamei culture system with a purification function, which comprises a circulating water tank, a second sedimentation tank, a culture pond, a sludge well and a first sedimentation tank, a channel is arranged below the bottom of the culture pond, and the circulating water tank and the sludge well are both communicated with the channel; a sludge pumping mechanism is arranged above the sludge well; a second water pump is arranged between the culture pond and the second settling pond, and the second water pump pumps pond water in the culture pond into the second settling pond; a disinfection assembly and a filtering assembly are arranged between the second sedimentation tank and the circulating water tank, and the disinfection assembly and the filtering assembly sequentially pump out, disinfect and filter clear water in the second sedimentation tank and then convey the filtered clear water to the circulating water tank. The purification device is matched with a purification method, sludge at the bottom of the pond can be treated and recycled, the influence of harmful factors on the water body is reduced, meanwhile, the water body is treated and recycled, the water quality becomes better, and white prawn culture is facilitated.

The invention relates to the technical field of aquaculture feeding, and discloses an aquaculture device helpful for protecting marine ecological environment, the aquaculture device comprises a storage bin rotatably mounted on a support frame, a plurality of groups of discharge holes are formed in the outer side of the bottom of the storage bin in a penetrating manner, and the plurality of groups of discharge holes are annularly distributed in the outer side of the storage bin; a motor is installed on the supporting frame and located below the storage bin. Through the arrangement of multiple groups of discharging holes and the cooperation of the adjusting assembly, the adjusting assembly drives the first cover plate to ascend or descend, the opening size of the discharging holes is adjusted, the feed feeding amount is automatically adjusted, and the situation that due to the fact that the number of fishes is too small in the initial state, breeding feed settles into a net cage or penetrates through the breeding net cage to settle into seawater is reduced; the damage to the marine ecological environment caused by sedimentation and decay of the breeding feed is reduced, the marine ecological environment is protected, the opening of the discharge hole is adjusted to be maximum for feeding, the time is saved, and the damage caused by scrambling among fish schools is reduced.

The invention discloses a reservoir desilting body layout scheme evaluation method based on siltation risk characteristics, belongs to the technical field of reservoir desilting, and can solve the problem that an existing method is low in evaluation precision and accuracy. The method comprises the following steps: S1, determining a plurality of subareas of a reservoir according to historical operation data of the reservoir, and determining sedimentation risk characteristics and sediment distribution characteristics of each subarea in each of a plurality of continuous time periods; s2, according to the siltation risk characteristics and the sediment distribution characteristics, constructing a sediment distribution prediction model of the reservoir; and S3, utilizing the sediment distribution prediction model to predict the sediment distribution situation after the reservoir implements the desilting body layout scheme, and evaluating the desilting body layout scheme according to the sediment distribution situation. The method is used for evaluating the reservoir desilting body layout scheme.

The invention discloses a salt lake brine mining method and system for hydraulically gradient-driven water replenishing and ore dissolving of a sedimentation funnel, and relates to the technical field of salt lake mineral resource development, the method comprises the following steps: S1, collecting water level data of a sedimentation funnel area, calculating gradient distribution, dividing functional areas, and generating zoning parameters; s2, based on the partition parameters, a water injection well network is arranged in the gradient direction, water injection parameters are determined according to the water level difference, and a well network scheme is generated; s3, based on a well pattern scheme, injecting the proportioning solvent into an ore bed in a layered manner to form a directional seepage field, and generating solute transport data; s4, on the basis of solute transport data, enriched brine is extracted in the collection area, the concentration is monitored, and brine parameters are generated; and S5, based on the deviation between the brine parameter and the target value, calculating the regulation amount, adjusting the injection-production parameter to maintain dynamic balance, and outputting the salt lake brine with the target concentration. By regulating and controlling the hydraulic gradient, the form of the settlement funnel is stabilized, the phenomena of stratum disturbance and ground settlement are reduced, and the ecological risk is reduced.

The invention belongs to the technical field of sewage and sludge treatment, and discloses a sedimentation tank desilting construction method for domestic sewage and coal cleaning plant sewage treatment. The problems that an existing desilting technology is low in efficiency and serious in pollution, and a pool body is damaged are solved. The method comprises the following steps: collecting data, combining a sonar technology to obtain sludge parameters of a sedimentation tank, and formulating a scheme; building a closed operation shed and mounting matched ventilation and purification equipment on a portal frame; adding a composite flocculant, and stirring to precipitate the sludge; discharging clean water; performing microwave pretreatment on the hardened sludge surface, and performing normal-pressure cleaning to form flowing slurry; pumping the flocculating constituent and the slurry, and carrying out gravity concentration and filter pressing dehydration to form a mud cake; a biological conditioner is sprayed after the sedimentation tank is cleaned, and secondary cleaning is conducted; checking and repairing the tank body and spraying a nano anti-corrosion coating; and dismounting the equipment and recovering the site after acceptance. The first-time dynamic microwave treatment is matched with normal-pressure cleaning, biochemical synergy and anti-corrosion technologies, so that the dredging efficiency is improved, the environmental pollution is reduced, and the service life of the pool body is prolonged.

The embodiment of the invention discloses a thickener overflow water treatment system and method, and relates to the technical field of solid-liquid separation. The treatment system comprises a sedimentation tank, a clean water tank, a desilting device and a turbidimeter, the sedimentation tank is arranged at the side part of the thickener and is communicated with the clarified water containing part of the thickener through an overflow pipe; the desilting device comprises a first main water pipe, a first main air pipe and a desilting pump; the first main water pipe is communicated with the first water pump and connected with a first branch water pipe, and a water flow nozzle is arranged on the first branch water pipe; the first main air pipe is communicated with the air source pump and is connected with a first branch air pipe, and the first branch air pipe is provided with an airflow nozzle; the inlet end of the desilting pump is communicated with the bottom of the sedimentation tank, and the outlet end of the desilting pump is communicated with a feeding cylinder of the thickener; the turbidimeter is arranged in the sedimentation tank and is used for monitoring the concentration of particulate matters in the overflow water of the thickener in the sedimentation tank. The method is suitable for thickener overflow water treatment scenes.

The invention discloses a clarification zone height detection device which comprises a thickener and further comprises a support, a first gravity monitoring device and a second gravity monitoring device are installed on the support, a first pull rope is fixed to the first gravity monitoring device, a first weight is fixed to the other end of the first pull rope, and a second weight is fixed to the other end of the second pull rope. A second pull rope is fixed to the second gravity monitoring device, a second heavy object is fixed to the other end of the second pull rope, and the horizontal line where the first heavy object is located is arranged on the highest warning line of an interface a between the clarification area and the settling area; the horizontal line where the second weight is located is arranged on the lowest warning line of the interface a between the clarification area and the settling area. The adding amount of the flocculating agent is adjusted in real time according to the height of the clarification area and feeding parameters, and it is ensured that the effluent quality is stable and reaches the standard.

The embodiment of the invention provides a reservoir capacity dynamic monitoring method and system based on an unmanned aerial vehicle, and the method comprises the steps: obtaining a reservoir surface feature data set through the unmanned aerial vehicle, determining the boundary of a water area, scanning the bottom of the reservoir, obtaining the underwater terrain elevation and sediment distribution data, and constructing a three-dimensional terrain model; and determining terrain and deposit change data based on the three-dimensional terrain model dynamic change data of the continuous time sequence. Sedimentation space distribution characteristics are obtained through change rate analysis, and the sediment transportation amount and the sedimentation and deposition space rule are determined in combination with the water flow speed. Key driving factors are screened through correlation analysis, a sedimentation high-risk area is determined according to the key driving factors, and the change of sediments in the area is monitored, so that the change of the reservoir capacity is mastered. The reservoir siltation can be accurately and dynamically monitored, the high-risk area and the change mode are defined, the dynamic database is constructed to update the capacity change in real time, and important technical support is provided for reservoir management and flood control and disaster reduction.

The invention relates to the technical field of underwater topographic surveying and mapping, in particular to a sea area water taking channel scanning survey method and system based on multi-beam measurement, and the method comprises the following steps: constructing a rigid support, fixing a depth finder through a three-way cable fastening device, and building a Boolean parameter model; sound velocity, tide level and original echo data are collected; performing space-time registration, coordinate conversion and filtering denoising on the data to generate corrected water depth; and constructing an irregular triangulation network by using hard boundary constraint, generating a digital elevation model, and extracting a siltation area. According to the invention, multi-beam wide sector scanning and multi-sensor attitude correction technologies are fused, a limited water area full-coverage measurement system is constructed, and the problems of terrain blind areas and detail loss are solved. A boundary constraint reconstruction algorithm is utilized to realize closed-loop processing from coordinate reference unification to micro-landform restoration, the accuracy of channel bottom pit capture and edge topography expression is improved, and data support is provided for sedimentation analysis.

The invention belongs to the field of mariculture, and particularly relates to an oyster-sea urchin-undaria pinnatifida three-dimensional ecological breeding method suitable for a silt seabed. The method comprises the following steps: (1) construction of an oyster reef: hanging oysters in a silt sea area, and putting the cultured oysters to the seabed to form the oyster reef; (2) culturing undaria pinnatifida: culturing undaria pinnatifida above the oyster reef by adopting a buoyant raft; (3) putting sea urchin seedlings: putting the sea urchin seedlings by using the natural pore structure of the oyster reef as a sea urchin inhabiting place; (4) settlement feeding management: the cultured undaria pinnatifida is dropped to a sea urchin inhabiting area on the sea bottom to serve as sea urchin bait. Compared with a traditional single culture mode, the utilization rate of the culture space is increased by 3.2 times, the bait cost is reduced by 65%, the nitrogen and phosphorus load of a water body is reduced by 40%, meanwhile, the purposes that the growth speed of sea urchins is high, the survival rate is increased, the content of organic matter in sediments in an oyster area is reduced, and fresh undaria pinnatifida is efficiently utilized are achieved, and remarkable economic benefits and ecological benefits are achieved.

The present invention discloses a rainwater collection device based on a sponge city and its collection method, specifically relating to the technical field of rainwater collection. It includes a reservoir and a sedimentation cylinder. A manhole and a reuse well are arranged inside the reservoir. A first sewage discharge hole is opened at the bottom of the sedimentation cylinder, and a first sealing member is arranged in the first sewage discharge hole. When the water storage in the sedimentation cylinder is relatively large, the first sealing member can change the sealing state according to the accumulated water volume inside the sedimentation cylinder. A stirring member is arranged at the inner bottom of the sedimentation cylinder, and the stirring member can stir the sediment at the first sewage discharge hole when the first sewage discharge hole is opened. A second water inlet pipe is arranged on the side wall of the sedimentation cylinder. By pre-opening the sewage outlet according to the precipitation and the water storage volume inside the reservoir, and keeping the accumulated water inside the reservoir at a certain water level, the present invention enables the reservoir to have a certain buffer space, so as to ensure that when there is heavy rain or continuous rain resulting in a large precipitation, the rainwater collection device can quickly discharge floodwater to prevent urban waterlogging.

The invention discloses a method and device for determining the deposition rate of black shale in an ancient lake, and the method comprises the steps: sampling a black shale section in a drilling core, and measuring the total organic carbon content, the total rare earth element amount and the total cobalt Co element amount in each sample; establishing a corresponding first correction relationship according to the total organic carbon content and the total Co element sum, and eliminating the Co element content brought by biological activity according to the first correction relationship to obtain a first Co element content; establishing a corresponding second correction relation according to the first Co element content and the total rare earth element amount, and eliminating the Co element content brought by material source input according to the second correction relation to obtain a second Co element content; processing the second Co element content according to the distribution characteristics of the Co element content data of the sample to obtain the Co element content from the cosmic dust in the shale; and determining the deposition rate of the black shale in the ancient lake according to the Co element content from the cosmic dust and the Co element deposition flux of the cosmic dust.

The invention relates to the technical field of atmospheric pollution prevention and control, in particular to a waste gas treatment system for urban ecological environment, which comprises a pressure difference sensing module, a settlement triggering module, a frequency spectrum analysis module and an interface execution module. According to the method, the airflow velocity difference and the vertical pressure gradient are monitored in real time, the deflection angle of the wind field guide plate is dynamically adjusted by adopting a multi-source data calibration mechanism, and liquid film disturbance is triggered in combination with particle concentration distribution data, so that the particle sedimentation efficiency is effectively improved; resonator amplitude parameters are accurately controlled based on gas-liquid interface vibration spectrum feature extraction and shear force data fusion analysis, liquid film dynamic stability optimization is achieved, a micro-vortex enhancement instruction is generated by feeding back liquid film contact time data in real time, a closed-loop regulation and control mechanism is formed, gaseous pollutant absorption efficiency and reaction uniformity are synchronously enhanced, and the stability of the liquid film is improved. The pollutant removal efficiency stability is maintained under complex working conditions, and the system energy consumption and the secondary pollution risk are reduced.

Disclosed is a method for regulating confluence of tributaries with a large drop difference and a large angle into a trunk canal. The method includes: banking up a reservoir at an upstream end of a tributary river, and widening a water surface, such that uniform distribution of water flows is completed; then conducting scouring and energy dissipation to reduce a flow velocity and kinetic energy of the water flows; then conducting flow-slowing sedimentation, such that sediment is deposited on one side of the tributary river connected to a downstream side of a trunk stream; and then conducting flow diversion at one side of the tributary river connected to an upstream side of the trunk stream, such that an included angle of confluence of tributary river water into the trunk stream is reduced.

The invention discloses a cascade control method and system for the alum adding process of a waterworks. The cascade control method comprises the steps that preprocessed operation data of the waterworks are obtained; according to the preprocessed operation data, on the basis of a pre-trained LSTM-Transformer prediction model, an alum adding amount prediction value, an effluent turbidity prediction value and a sedimentation velocity prediction value at the current moment are obtained; segmenting the alumen ustum image based on an SAM algorithm, extracting features by adopting OpenCV, and calculating a settling velocity; based on feed-forward-feedback compound control, the feed-forward control adjusts the alum adding amount in time by monitoring the change of the quality of raw water, a main loop of cascade control predicts the water turbidity through MPC to calculate the optimal set value of the settling velocity, an auxiliary loop calculates the alum adding amount through the settling velocity, the feed-forward control and cascade control are subjected to decentralized summation, and the alum adding amount is calculated according to the optimal set value of the settling velocity. And calculating the final addition amount of the alum. According to the invention, the dosage of alum can be regulated and controlled more accurately.

The invention relates to the technical field of rotational flow desilting devices, and particularly discloses a rotational flow desilting device for hydraulic engineering, which comprises a rotational flow desilting cylinder, a rotational flow assembly, a sand-water separation assembly, a conveying assembly and a control management unit, a discharging pipe is fixedly connected to the bottom of the rotational flow desilting cylinder, a control valve is fixedly connected to the interior of the discharging pipe, an electric valve is fixedly connected to the interior of the water inlet pipe, and the control management unit is used for monitoring and analyzing the running state of the rotational flow desilting cylinder in real time. According to the invention, through the arrangement of the control management unit, the traditional extensive mode depending on artificial experience judgment can be changed, so that the equipment operation information can be obtained more comprehensively, timely and accurately. Based on the data, different working conditions can be accurately identified, a basis is provided for parameter optimization, and the problem that traditional fixed parameter control cannot adapt to sewage characteristic changes is solved.

The invention discloses a lake self-settling layered water sampling device and method, and belongs to the technical field of water quality monitoring. The device comprises a bearing table floating on the water surface, a main control box is arranged in the middle of the bearing table, the bottom of the main control box is connected with a rope-controlled lifting assembly, and the rope-controlled lifting assembly is connected with a self-settling water sampling assembly through a pull rope; the rope-controlled lifting assembly comprises an adjustable-speed motor, a rope winding roller and a depth detection unit, the self-settling water sampling assembly comprises a multi-cavity water sampling barrel and a counterweight cabin, and the main control module coordinates all the assemblies to realize stratified sampling. The invention further discloses a lake self-settling layering water sampling method. The device can accurately obtain water samples in different depths of lakes, and is suitable for scenes of lake ecological monitoring, water quality analysis and the like.