21 results about "Water sediment" patented technology

This invention discloses a device and method for controlling the release of endogenous phosphorus in water based on electron transfer. The device includes: a carbon-based electronic conductor, a current collector, a support frame, and a cover plate; the support frame is a hollow structure with openings at both ends; the cover plate is fixed to one end of the support frame, and the other end of the support frame is used to insert into water sediment for fixation; the cover plate has a central hole, one end of the carbon-based electronic conductor is fixed to the cover plate, and the other end passes through the central hole and is suspended inside the hollow structure; the current collector is disposed inside the hollow structure of the support frame and surrounds the carbon-based electronic conductor. This invention utilizes conductive materials as a medium, which can shorten the electron transfer distance, reduce electrode costs, and efficiently control endogenous phosphorus in water; it has the characteristics of simple operation, low investment cost, and high efficiency, and can also simultaneously achieve organic pollution removal and endogenous phosphorus fixation, and the organic pollution removal process can be monitored.

The invention discloses a nitrogen migration and transformation simulation and data analysis device and method, and relates to the technical field of ecological environment simulation. An isotope storage labeling module in the device is used for adding an isotope labeling substance to an environment simulator and recording basic information of the isotope labeling substance; the environment simulator is used for containing a sample substance, adding a water sample and an isotope labeling substance, and simulating the hydrological environment of the sample substance by controlling the flow of the added water sample; the liquid substance monitoring module is used for acquiring concentration profiles of dissolved substances at the overlying water-gas interface and the overlying water-sediment interface; the gas flux monitoring module is used for measuring the concentration of the gas at the overlying water-gas interface and measuring a mass-to-charge ratio signal of the gas above the overlying water-gas interface; the processing unit is used for calculating the nitrogen migration and transformation information, the nitrogen generation rate and the nitrogen removal efficiency, and the accuracy of the quantitative analysis result of the nitrogen migration and transformation behavior can be improved.

The invention relates to the technical field of environmental treatment, in particular to an inland water sediment treatment system and method. The system comprises a suction unit, a temporary storage unit, a mixing unit, a curing and adding unit and a dehydration storage yard, wherein the suction unit is used for extracting bottom mud of a water body and conveying the bottom mud to the temporary storage unit, the curing and adding unit is used for injecting a stabilizer into the mixing unit, and the mixing unit enables the bottom mud, airflow and the stabilizer to form a uniform gas-liquid-solid three-phase system; high-risk exchangeable heavy metal, high-risk carbonate combined heavy metal and high-risk iron and manganese oxide combined heavy metal are directionally converted into stable mineral phases, dewatering and pennisetum hydridum planting are matched, residual heavy metal is adsorbed for a long time by means of the hyperaccumulation characteristic of pennisetum hydridum, and end ecological management and control are achieved. According to the scheme provided by the invention, the links of desilting, heavy metal curing, dewatering and repairing are integrated, so that the equipment redundancy can be effectively reduced, meanwhile, the requirement of large-scale bottom mud outward transportation and disposal can be omitted, and the transportation and landfill cost is greatly reduced.

The invention belongs to the technical field of water environment treatment and ecological restoration, and particularly discloses a BN model-based ecological restoration method for heavy metal pollution in river and lake water sediments. According to the method, the synergistic effects of key environmental factors such as CEC, OM, SFL, DO, TN and TP are creatively integrated, a BN model capable of accurately simulating the adsorption-desorption process of heavy metal on the water-sediment interface is constructed, the model is used for reasoning and analyzing the heavy metal migration and transformation rule, the repair strategy is optimized, and the effect is verified. According to the method, the remediation efficiency is remarkably improved, the risk of secondary pollution is reduced, and scientific and technical support is provided for heavy metal treatment in complex river and lake environments.

The utility model discloses a sampling device suitable for shallow water sediment collection, and relates to the technical field of environmental monitoring and geological exploration, the sampling device comprises a sampling pipe, a handpiece, a sensor assembly and a display assembly, the sampling pipe is provided with a one-way valve; a sampling port is formed in the bottom of the sampling pipe, a sampling cavity is formed in the sampling pipe, and the sampling port is communicated with the sampling cavity; the one-way valve is arranged at the sampling port, and the one-way valve is conducted from the sampling port to the sampling cavity. When the sampling device is used, the holding piece is held by a hand, the sampling pipe goes deep into a water body, underwater sediments enter the sampling cavity through the sampling port, and the sampling pipe is taken out, so that the sediments can be collected; the one-way valve enables sediments to enter the sampling cavity from the sampling port and limits the sediments in the sampling cavity to flow out from the sampling port; through the sensor assembly and the display assembly, a user can monitor the underwater environment in real time.

The invention discloses a metabolism experiment device for a chemical pesticide water-sediment system. The metabolism experiment device comprises a box body, a culture assembly arranged in the box body, a reaction assembly arranged on the culture assembly, an adjusting assembly arranged in the box body and connected with the reaction assembly, and a gas chromatograph-mass spectrometer arranged at the top end of the box body, the device is reasonable in structural design, can accurately control key environmental parameters such as temperature, dissolved oxygen and pH value, simulates various natural environments such as aerobic environment and anaerobic environment, provides reliable environmental conditions for the research of the metabolic process of chemical pesticides, can be suitable for the metabolic research of different types of chemical pesticides in different water-sediment systems, and has wide application prospects. And reliable data support is provided for environmental risk assessment of pesticides.

The present application relates to the field of separation equipment, specifically a ship ballast water sediment receiving and disposing device, comprising a receiving and separating device, the receiving and separating device has a plurality of filtering mechanisms, the filtering mechanism comprises a plurality of fixed rings and movable strips, the movable strips are connected with movable columns, the movable columns are connected with a plug rod together and pass through a top cover, the filtering mechanism comprises a top spring abutting against the plug rod, a backflushing mechanism is installed in a tank structure and a top vibrating mechanism is installed on the backflushing mechanism and cooperates with the plug rod, the present application forms the basis of the filtering grid structure through the top spring, the fixed movable strips and the fixed rings, drives the plug rod connected with the movable strips to move upward through the top vibrating mechanism, thus generates small vibration and increases the flow rate of the local gap, and allows the movable columns to produce a certain impact on the base when falling, thus generates a large vibration on the filtering mechanism as a whole, obtains better vibration shaking effect, and facilitates cleaning of some adsorptive organisms.

The utility model discloses a kind of mortar water sediment recovery devices, it is related to technical field of recovery device.Drug injection forms significant concentration gradient in device interior, so that the concentration of drug in different positions in device interior is different, thereby affecting the processing speed of device to mortar water.The utility model includes device main body and feeding mechanism.The utility model is provided with feeding mechanism, first stirring rod, driving motor and device main body, using the work of driving motor, first stirring rod can be driven to rotate, and mortar water in the interior of device main body can be driven to mix, while first stirring rod rotates, driving bevel gear can be driven to rotate, then by the transmission of driven bevel gear, first bevel gear and second bevel gear, second stirring rod can be driven to rotate, the drug discharged at medicine disc is mixed with mortar water, thereby improve the mixing speed of drug and mortar water, accelerate the working efficiency of device.

The invention discloses a method for evaluating radioactive contamination of a decommissioned uranium mine area based on multi-source data fusion, and relates to the field of uranium mine area governance, and the method comprises the steps: detecting the radon exhalation rate, the radon concentration, the gamma air absorbed dose rate and the radionuclide content in soil of a to-be-evaluated decommissioned uranium mine area; calculating the public radiation dose according to the radon concentration and the gamma air absorption dose rate of the decommissioned uranium mine area; detecting the radioactive element concentration in the surface water of the decommissioned uranium mine area and the radioactive element content in the water sediment; calculating a Nemerow index as a comprehensive pollution index of the surface water based on the concentration of radioactive elements in the surface water; calculating a geocumulative index based on the content of radioactive elements in the water-based sediment as a comprehensive pollution index of the water-based sediment; and performing radioactive pollution assessment on the decommissioned uranium mine area according to the radon exhalation rate of the decommissioned uranium mine area, the public radiation dose, the radionuclide content in the soil and the comprehensive pollution index of the surface water and the water sediment.

The invention discloses a soil and water-system sediment environment monitoring system and method, and belongs to the field of environment monitoring. Composite pore unit samples in a near-surface transition layer are collected, and a particle interface energy-deformation curve model is constructed; disturbance is applied under the in-situ condition, pollutant delayed release parameters are obtained, and a pollution migration potential factor set is formed; constructing a joint migration mapping model of the two-dimensional profile based on the parameters; in combination with regional water potential disturbance data, generating a disturbance frequency response matrix and coupling the disturbance frequency response matrix with the model to obtain a ternary correlation body model; a key migration trigger point is further identified, a microorganism-disturbance cooperative release index is constructed, a transboundary interface mutation coefficient is calculated, a pollution jump path is predicted, and a pollution priority response area layer is formed; if the overlapping rate of the layer and the ecological barrier structure exceeds a threshold value, automatically adjusting the monitoring frequency and updating path prediction; the method has the advantages of being high in cross-scale modeling precision, high in dynamic response capability, capable of achieving ecological protection collaborative early warning and the like.

The application relates to the technical field of variable-frequency constant-pressure water supply, in particular to an intelligent variable-frequency constant-pressure water supply equipment, which comprises a tank body provided with an air storage chamber and a water storage chamber, the air storage chamber and the water storage chamber are separated through a diaphragm, an isolation device provided with a blocking plate is arranged in the water storage chamber, the isolation device pushes the blocking plate to be attached to the tank body according to the internal pressure of the air storage chamber, so that the water storage chamber is divided into an isolation chamber and a constant-pressure chamber, the isolation chamber can be used for collecting and storing water sediments, a blowdown pipe is connected to the isolation chamber, and a protection assembly is arranged on the blocking plate and the tank body. The application can automatically collect and isolate the suspended matters in water, so that the equipment can automatically blow down during the operation process, thereby avoiding the problems that the water supply equipment is damaged or harmful substances affect people's health due to the low frequency of artificial maintenance and the deposition of water scale.

This utility model discloses an anti-interference deep-water sediment sampler, relating to the technical field of water conservancy engineering. It includes two sliding sleeves, respectively disposed at both ends of a handle; a U-shaped positioning plate; a clamping plate movably disposed within one side wall of the positioning plate; a support plate, one end rotatably disposed on the middle plate of the positioning plate, and the other end having a positioning hole penetrating the support plate, through which the sampling tube slides; a telescopic rod, one end rotatably disposed on the outer wall of the positioning plate, and the other end rotatably disposed on the support plate, the telescopic rod having a locking bolt; and two positioning rods, respectively perpendicularly disposed on the support plate and parallel to each other, with the two sliding sleeves slidably fitted onto the two positioning rods. This utility model has advantages such as ease of use and preventing the sampling tube from being interfered with by water flow.

The invention belongs to the technical field of environmental engineering, and discloses an experimental device and an experimental method for simulating nitrogen and phosphorus release of water body sediments. The device comprises an experiment main body unit, an environment simulation unit, a water quality regulation and control unit, a mobile monitoring unit, an automatic sampling module and an intelligent regulation and control module. Wherein the experiment main body unit is provided with a water tank for accommodating sediments and a water body; the environment simulation unit is integrated with a water flow disturbance assembly, an aeration assembly, an illumination assembly and a heating assembly; the water quality regulation and control unit regulates water chemical parameters; the mobile monitoring unit performs spatial dynamic detection on the water body; the automatic sampling module automatically collects overlying water and interstitial water of the sediment according to a specified time interval; the intelligent regulation and control module coordinates operation of all the units, and multi-scene simulation and closed-loop regulation and control are achieved. Accurate simulation, real-time monitoring and intelligent regulation and control of the migration and release process of the sediment-water interface substance under different environmental conditions can be achieved, and the accuracy and comprehensiveness of experimental data are remarkably improved.

The invention discloses a preparation method of an organic cation polymeric flocculant modified silicon-based material. The method comprises the following steps: compounding a modified silicon-based material with an organic cation polymeric flocculant, so that valence bonds between molecular groups of the flocculant and active sites on the surface of the modified silicon-based material are combined, and further preparing the organic cation polymeric flocculant modified silicon-based material. The raw materials are low in cost, natural silicon-based minerals or water sediments which are wide and easy to obtain are utilized, solid waste recycling is achieved, the process is simple, and economical efficiency is high; and the selected organic flocculant is an eco-friendly polymer, is non-toxic and harmless, does not introduce secondary pollution after being added, has no adverse effect on aquatic organisms, has efficient treatment performance and high biological safety, and is suitable for the fields of water purification and algae control.

The application discloses a systematic enclosure device and an operation method thereof, and relates to the technical field of environmental monitoring. The device comprises a structural frame, an intelligent dosing system, a multi-parameter collaborative monitoring structure, a controllable water body exchange mechanism and a water-sediment interface research module integrated on the structural frame. The water-sediment interface research module is connected or isolated with the bottom mud through an isolation cover with a driving mechanism. A central control unit is in communication connection with each module. Based on real-time feedback data of the multi-parameter collaborative monitoring structure, the central control unit uses a built-in multi-parameter linkage feedback mechanism and a self-learning algorithm to perform self-adaptive collaborative control on reagent dosing, water body exchange and the state of the interface isolation cover. Closed-loop management of the water body treatment process is realized, the material exchange of the water-sediment interface can be accurately simulated and controlled, and the device is especially suitable for algal bloom control, ecological restoration and carbon cycle research.

The application discloses a water-sediment interface research device based on a thin film diffusion gradient, and has the characteristics that the device comprises a simulation tank and a passive sampler; the simulation tank is provided with an opening at one end, and a sediment layer and a liquid layer are sequentially arranged in the tank body from bottom to top; the passive sampler comprises a sampler back plate, a sampling recess is arranged on the surface of the sampler back plate, a hand-held device is arranged at one end of the sampler back plate, and a stabilizer is arranged at the other end of the sampler back plate; the stabilizer is used for vertically placing the sampler in the simulation tank, so that the sampling recess can be in contact with the sediment layer and the liquid layer at the same time; a DGT film layer assembly is detachably attached in the sampling recess; the DGT film layer assembly comprises a binding gel layer, a diffusion gel layer and a filter layer from bottom to top in sequence; the passive sampler further comprises a sampler front plate, a sampling port is arranged on the sampler front plate, and the sampling port is used for accommodating the sampling recess; and the sampler front plate can be closed with the sampler back plate, so as to fix the DGT film layer assembly.

The invention discloses a scanning electron microscope sample preparation method for unconsolidated water-containing sediments. The method sequentially comprises the following steps: drilling and plugging a rock core; slicing the rock; unfreezing the rock slices; drilling a scanning electron microscope sample; conducting treatment; and observing and analyzing by a scanning electron microscope. According to the method, the particularity of the unconsolidated water-containing sediment is fully considered from a series of sample preparation processes such as sample plug drilling, shape-preserving preparation and film coating, and an unconventional innovative technical process is adopted. Compared with a traditional sample preparation method, the method has the advantages that the sample structure is prevented from being damaged, the real underground state is preserved, the mineral components and content can be observed, the pore distribution and mineral distribution rule in the rock can be effectively shown, and the microscopic and in-situ observation and analysis advantages of the scanning electron microscope are fully exerted.

The invention discloses cable bacteria and a long-distance electron transmission research device and method thereof, and belongs to the field of cable bacteria research equipment.The cable bacteria research device comprises a groove body, a static box cover is arranged above the groove body in a covering mode, the groove body comprises an inner-layer groove, a middle-layer groove and an outer-layer groove which are sequentially arranged from inside to outside, the inner-layer groove is filled with sediment samples, and the middle-layer groove is filled with sediment samples; the upper portion of the sediment sample is filled with overlying water, nanowires distributed in a crossed mode are arranged in the sediment sample, the ends of the nanowires penetrate out of the inner groove body and then are located outside the inner groove body, and the diameter of the nanowires is smaller than that of cable bacteria; an emptying pipe, a water inlet pipe and a water outlet pipe are arranged in the tank body, the middle-layer tank is filled with a sediment sample and overlying water with the same height as the inner-layer tank, and the outer-layer tank is a heat preservation layer. The method can be used for culturing and cutting the cable bacteria in the sediment sample, and the problems that the research means of the cable bacteria and the long-distance electron transmission process of the cable bacteria are complex, and the repeatability of experimental results is low are solved.

The present invention provides a water-containing sediment removal agent that can effectively soften water-containing sediments, particularly iron bacteria sludge, using a simple method, and a method for removing water-containing sediments using the removal agent. [Solution] A water-containing sediment remover containing 50% to 100% by mass of organic acid powder, wherein the median diameter (D50) of the organic acid powder is 0.3 mm or more, is used to remove water-containing sediment, especially iron bacteria sludge.

This invention relates to the field of ballast water treatment technology, and in particular to an automated collection, separation, and treatment device for ship ballast water sediments. The device includes a cleaning vehicle, a separation unit, a centrifuge unit, and a sterilization unit. The cleaning vehicle is a tracked vehicle with two robotic arms mounted on its top. Each robotic arm is equipped with a first pipe and a second pipe. This invention cleans the sediments in the ballast tank by placing the cleaning vehicle inside. Water pipes connect to corresponding pumps, and the robotic arms clean the ballast tank interior. High-pressure water guns are used to target the tank walls, and the robotic arms spray water to clean various areas. The high-pressure, directional water flow washes away the solidified sediment layer at the bottom of the tank, causing the hardened or tightly adhered sediments to return to a fluidized state. This achieves automated sediment removal without manual shoveling, improving the efficiency of loosening sediments at the bottom of the tank.