35 results about "Sediment remediation" patented technology

The invention provides an intelligent in-situ remediation system and method for river and lake polluted bottom mud, and relates to the technical field of river and lake bottom mud pollution remediation. The system comprises a bottom mud pollution enrichment and purification device, a bottom mud pollution in-situ monitoring device, a bottom mud water content in-situ tester, an intelligent monitoring and control system, a vacuum negative pressure device, a buoy and a floating ball. The bottom mud pollution enrichment and purification device, the bottom mud pollution in-situ monitoring device and the bottom mud water content in-situ tester are connected with floating balls and then inserted into bottom mud, and the intelligent monitoring and control system and the vacuum negative pressure device are installed on a buoy located on the water surface. According to the invention, the sediment pollution in-situ monitoring device, the sediment water content in-situ tester, the sediment pollution enrichment and purification device and the like are coupled with the intelligent monitoring and control system, so that rapid response and intelligent in-situ remediation of sediment pollution are realized, and the problems of hysteresis quality, blindness and the like in the existing remediation technology are solved; the bottom mud pollution remediation efficiency is obviously improved.

The present disclosure provides an in-situ electric stratified remediation device and method for accurate position in remediation depth in sediment. the device includes a telescopic rod, a porous cylinder, a water storage tank, a curing agent storage device, and a depth determining module. The water storage tank is configured to collect sediment pore water and contaminants converged along a surface groove of a columnar electrode; and the fixed determining module is configured to send an indication information in response to that the curing agent storage device is inserted below a mud-water interface, while triggering release of curing agent from a wall of the curing agent shroud.

The invention discloses a mariculture area bottom mud aging degree identification and restoration method, belongs to the technical field of aged bottom mud restoration, can quantitatively evaluate the aging degree of mariculture bottom mud by using sulfide, heavy metal and organic carbon as indexes, and solves the problem that the current aging judgment standard does not have a unified standard. A scientific basis is provided for repairing the aged bottom mud and evaluating the repairing effect; meanwhile, the developed iron-reducing flora loaded nZVI / S composite material (DIRB at nZVI / S) can be used for removing sulfides, heavy metals and organic matters in the mariculture bottom mud in an immobilization manner by utilizing a physical-chemical-biological combined effect, so that effective repair of the aged mariculture bottom mud is realized.

The present invention discloses a sediment remediation system, which includes a slag cleaning and dehydration structure, comprising: a slag cleaning box body, inside which a first filter screen and a second filter screen are arranged from top to bottom. Above the first filter screen, there are a sludge water inlet and a slag outlet. Between the first filter screen and the second filter screen, there is a first water outlet. Below the second filter screen, there is a second water outlet. The aperture of the first filter screen is larger than that of the second filter screen. A dry mud discharge door is also arranged between the first filter screen and the second filter screen; a slag cleaning unit, which includes a pair of slag cleaning supports, slag cleaning rods, slag cleaning cylinders, a pair of special-shaped slag cleaning plates, and a slag cleaning belt; a dehydration unit, which includes a pair of sealing plates, a pair of opening doors, an opening cylinder, and a dewatering pump. The present invention can dehydrate, repair, reshape, and reset the dredged sediment in the lake area, improve the sediment remediation quality, shorten the riverbed treatment period, and further protect the ecological balance of the riverbed.

The application discloses a kind of based on multimodal machine learning's bottom mud repair method and system, it is related to environmental remediation technical field, wherein method includes: obtaining satellite remote sensing data of target area, in-situ sensor data and laboratory data are composed of multimodal data;Based on multimodal data, pre-processing and feature selection are sequentially carried out, to obtain key feature set;Based on key feature set, historical pollution data and ecological sensitive area location information are combined to generate risk-cost trade-off suggestion;Based on risk-cost trade-off suggestion and multi-objective optimization algorithm, to generate optimized repair scheme;Based on optimized repair scheme, repair task is executed in target area, and the state data of target area in execution process is obtained;Based on state data, to adjust optimized repair scheme.Pollution dynamic diagnosis, real-time optimization and automated accurate execution of repair scheme are realized, and then the efficiency of complex water bottom mud treatment is improved.

The application belongs to the field of environmental governance, and provides a water sodium manganese ore-oxygen releasing agent composite type sediment repair material and a preparation and application method thereof, which comprises modified oxygen releasing agent, water sodium manganese ore, microbial flora and embedding matrix, the embedding matrix comprises calcium alginate, polyvinyl alcohol and water cross-linked formed hydrogel, wherein the microbial flora comprises domesticated aerobic denitrification and phosphorus removal mixed flora.The water sodium manganese ore-oxygen releasing agent composite type sediment repair material utilizes the photoelectric catalytic activity of water sodium manganese ore and the oxygen releasing ability of oxygen releasing compound, improves the oxidation-reduction potential of sediment, enhances the sustained degradation ability of organic pollutants, cooperatively removes nitrogen pollutants in water environment, enhances the in-situ repair effect of sediment, is applied to sediment repair, and is more efficient, environment-friendly and has long-term effect.

Disclosed in the present invention are a microbiome with a highly-efficient tetrabromobisphenol A degradation function on the basis of cell-surface hydrophobicity, a construction method therefor and the use thereof. According to the present invention, microorganisms with a high cell-surface hydrophobicity are introduced into a tetrabromobisphenol A-degrading microbial community to construct a microbiome, which can effectively improve the degradation and removal efficiency of tetrabromobisphenol A by the microbiome, can provide an engineered microbial preparation for wastewater treatment and contaminated water body remediation or sediment remediation, and can also provide theoretical guidance for the application thereof in wastewater treatment and contaminated water body remediation or sediment remediation.

The invention belongs to the technical field of river and lake sediment remediation, and discloses a foldable device for in-situ electric-phytoremediation of river and lake heavy metal polluted sediment. Comprising a horizontally arranged insulating tube; the longitudinal frame comprises two supporting pipes, a first connecting piece and a second connecting piece, the two supporting pipes are vertically arranged and connected to the bottoms of the two insulating pipes respectively, a first through hole and a second through hole which are vertically formed are formed in the first connecting piece, a third through hole is formed in the second connecting piece, and two inclined supporting rods are connected to each supporting pipe; the two inclined supporting rods are detachably connected to the two ends of the same insulating tube respectively, and the longitudinal frame is made of insulating materials. The horizontal rotating shaft is arranged in the first through hole of the first connecting piece in a penetrating manner; the aquatic plant planting plate is arranged on the horizontal frame; the cathode electrode stem and the anode electrode stem are horizontally mounted in a second through hole and a third through hole which are provided with a plurality of through holes in the wall surface respectively; and the anode and the cathode of the power supply are respectively connected through wires.

The present invention discloses a non-constant flow rate pulsed sediment remediation device and an operation method. The system includes three subsystems: a sediment system, a detection and remediation system, and a control and supply system. Aiming at the prominent problems such as frequent changes in river / lake water levels, difficulty in promptly identifying sediment pollution, lack of effective detection, cleaning and remediation devices and methods, etc., the present invention is based on a detection and remediation system that can measure the water level height, constructs a system for identifying sediment pollution of different depths, different types, and different degrees, realizes the intelligent and efficient remediation of sediment pollution in lakes with non-constant water levels, improves the accuracy, efficiency, and durability of sediment remediation. Reduces the pollution of the water body by the contaminated sediment, making it harmless to the ecology and environment. The present invention has the advantages of low cost, less investment, convenient operation, high remediation efficiency, stable performance, etc.

The invention discloses a method for treating black and odorous water through sulfur autotrophic denitrification in cooperation with anaerobic ammonia oxidation. The treatment method comprises the following steps: collecting overlying water and bottom mud samples in the black and odorous water body, and sealing and standing the overlying water sample and the bottom mud sample to obtain a treatment sample; measuring the content of volatile organic sulfide in the sediment sample, and calculating the theoretical dosage of calcium nitrate; the method comprises the following steps: adding calcium nitrate which is 1.0 time of the theoretical addition amount into the bottom mud of a treated sample, adding SAD sludge and Anammox sludge into the surface layer of the bottom mud of the treated sample, continuously running until any day in the 20th-30th day, adding calcium nitrate which is 0.3-0.8 time of the theoretical addition amount, continuously running until the 45th-55th day, and finishing the treatment of the water body. The method not only can effectively solve the problem of water quality deterioration caused by seasonal change, but also can synergistically remove NH4 < + >, AVS and organic matters in the bottom mud, thereby reducing the emission of greenhouse gases such as N2O in the bottom mud remediation process.

This application relates to the field of water pollution control technology, specifically to remediation materials that simultaneously treat sediment and water, their preparation methods, and applications. The method for preparing the remediation material includes: adding Al-MOFs and mixed activated carbon powder to an organic solvent, shaking, cooling, filtering, washing, and drying to obtain porous activated carbon material; adding the porous activated carbon material to a calcium lactate solution and stirring, then adding sodium alginate solution for forward spheroidization, followed by filtering, washing, and drying to obtain porous activated carbon material gel spheres; adding the porous activated carbon material gel spheres and a composite bacterial agent to water, shaking and culturing in a shaker, then filtering, washing, and drying to obtain bacteria-containing porous material; adding the bacteria-containing porous material to a sodium alginate solution, stirring, and adding calcium lactate solution dropwise for reverse spheroidization, followed by filtering, washing, and drying to obtain the remediation material. This remediation material possesses excellent water and sediment remediation effects without burdening the aquatic ecosystem.

The utility model discloses an aquatic plant-microorganism combined bottom mud remediation reactor, which belongs to the technical field of sludge treatment and comprises an ecological cylinder, bottom mud is laid at the bottom of the ecological cylinder and used for planting aquatic plants, overlying water is added into the ecological cylinder, and an adding fixing device is inserted into the top of the bottom mud. The bottom of the adding fixing device is communicated with the interior of the bottom mud through an opening, the top of the adding fixing device penetrates through overlying water to be communicated with the outside, and the adding fixing device is used for adding microbial agents; the ecological cylinder is further provided with a water flow simulation device used for simulating water flow. According to the aquatic plant-microorganism combined in-situ remediation system, an aquatic plant-microorganism combined in-situ remediation scheme with the highest cost performance can be obtained through low economic investment, and a better effect is achieved with low operation cost and maintenance cost.

This invention discloses a method for algae-bacteria coupled denitrification and phosphorus removal in water bodies and sediment remediation, belonging to the field of aquatic ecological restoration technology. The invention employs a method of immobilizing degummed silk fiber-pure cotton canvas-sodium alginate, forming a dual-algae system with *Chlorella vulgaris* in its logarithmic growth phase and suspended *Chlorella sorokinica* in its logarithmic growth phase. This system is combined with suspended denitrification and phosphorus removal bacteria to achieve a three-phase synergistic purification system under natural light and without aeration. A 60-day pilot-scale operation of this method showed a TN removal rate of 87.0%, a TP removal rate of 80.7%, and a sediment organic matter degradation rate of 55.2%. This invention is energy-free, low-carbon, ecologically safe, and has low operation and maintenance costs, making it suitable for in-situ remediation of eutrophic rivers, lakes, landscape water bodies, and aquaculture wastewater in still or slow-flowing water bodies.

The invention discloses a black and odorous water body bottom mud in-situ remediation device and remediation system, and relates to the technical field of sludge treatment equipment.The black and odorous water body bottom mud in-situ remediation device comprises a remediation assembly and a remediation body, the remediation assembly comprises multiple sections of splicing pieces, the multiple sections of splicing pieces are detachably connected, and the remediation body comprises a bag body and a reactant arranged in the bag body; the bag body is detachably arranged on at least one splicing piece, and the reactant can be in contact with the bottom mud when the splicing pieces are inserted into the bottom mud. Due to the fact that the multiple splicing pieces are detachably connected, the bag bodies can be installed on the corresponding splicing pieces according to the depth of the bottom mud to be treated, the bag bodies can reach the position of the bottom mud to be treated after the multiple splicing pieces are inserted into sewage, and the accuracy of repairing the bottom mud can be improved. In addition, the bag bodies can be installed on the multiple splicing pieces at the same time, and the same or different reactants can be installed in each bag body, so that bottom mud with different depths can be repaired at the same time, and the repairing efficiency is high.

The invention discloses a bionic sediment renewing method and equipment, and relates to the technical field of river and lake sediment remediation. A flexible enclosure is used for temporarily totally sealing a working water body, a movable water surface platform is moved to a water body to be treated through a navigation mechanism, underwater sediments are suspended in situ through a hydraulic disturbance unit, and the underwater sediments are suspended; the enhanced oxidation unit continuously supplies oxygen, and can intensively degrade suspended pollution in a manner of photocatalyst oxidation or activated enhanced microorganism oxidation or a combination of the photocatalyst oxidation and the activated enhanced microorganism oxidation, so that river and lake sediments are repaired, and data of underwater topographic change conditions are transmitted to the master console in real time through the detection mechanism. The disturbance intensity and angle of the hydraulic disturbance unit are adjusted through the master console, so that repair dead angles are avoided, and the working mode of the equipment can be selected from manual operation or autonomous scanning operation.

The present teachings describe photocatalytic composite materials that are useful for remediation of bodies of water such as lakes, ponds, wetlands and rice fields, as well as remediation of sediment under the water.

This invention relates to the field of sediment remediation, and more particularly to a device for treating river and lake sediment. Existing devices are inconvenient for judging the thickness of river and lake sediment during use, making it difficult to inject liquid bacteria into sediment of varying thicknesses, resulting in uneven distribution of the liquid bacteria. This invention includes a hull, with a mounting base fixedly connected to the bottom of the hull. A feed hopper is fixedly connected to the mounting base, and a hollow tube is rotatably connected to the lower part of the feed hopper. This invention uses a disc positioned on top of the river and lake sediment, allowing a guide pipe, threaded rod, and agitator to enter the sediment. An appropriate amount of liquid bacteria is then added to the feed hopper. This allows for the injection of liquid bacteria into sediment of varying thicknesses while minimizing dilution by the water, thus improving the treatment effect of river and lake sediment.

The application discloses a modified zeolite powder-based sediment repairing agent, which comprises 25-35 parts of zeolite powder, 15-25 parts of yellow sand, 15-20 parts of calcium peroxide powder and 15-25 parts of a microbial agent carrier complex in terms of mass fraction; the zeolite powder contains neodymium elements; and the microbial agent carrier complex contains carbon powder, attapulgite, bacillus spores, EM bacteria, nitrifying bacteria and denitrifying bacteria. The application further discloses a method for preparing the above sediment repairing agent.

The utility model belongs to the technical field of river and lake bottom mud repair, and discloses a river and lake bottom mud in-situ repair device which comprises an insulation protection cover, a bottom plate, a bottom plate and a bottom plate, an overflow pipe; the insulating protective cover penetrates through the top of the insulating protective cover and comprises an inner pipe and an outer pipe which are detachably connected, and the inner pipe is filled with a material capable of adsorbing or degrading pollutants; the repairing material box is fixed on the inner side surface of the insulating protective cover and is used for containing a repairing material for adsorbing or degrading pollutants; the two electrode protection sleeves are fixed in the insulating protection cover and are respectively connected with an electrolyte supply device; the anode electrode stem is arranged in one electrode protection sleeve; the cathode electrode stem is arranged in the other electrode protection sleeve; and the anode electrode stem and the cathode electrode stem are respectively connected with a power supply through wires. The river and lake bottom mud in-situ remediation device can efficiently complete river and lake bottom mud remediation treatment, and is simple in structure and convenient to operate.

The invention relates to the technical field of environmental remediation, in particular to a bottom mud remediation agent containing specific active ingredients of bamboo and a preparation method of the bottom mud remediation agent, and the bottom mud remediation agent comprises the following components in parts by weight: 30-50 parts of an oxidizing agent, 5-12 parts of an ecological adsorbent, 2-6 parts of compound microorganisms and 20-30 parts of supported zeolite composite particles. The bottom mud repairing agent can stably exist in bottom mud, a good microenvironment can be provided for microorganisms in the bottom mud through the synergistic effect of all the components, by slowly releasing the biological accelerant, the effect of the microorganisms can be improved, the utilization rate is increased, and the cost is reduced. According to the method, the degradation speed of organic pollutants in the bottom mud can be increased, the optimal remediation effect is achieved, meanwhile, the biological accelerant is continuously released, accumulation of the organic pollutants in the bottom mud is inhibited, and therefore secondary pollution of the bottom mud can be prevented, and the continuous and efficient bottom mud remediation effect is achieved.

The present invention discloses a bionic in-situ sediment remediation device, which includes a control system, an air inlet pipe, a power unit, a first roller brush and a purification chamber. An inlet is provided at the bottom of the front end of the purification chamber, and the bottom is open as a particle outlet. A second roller brush is provided below the particle outlet. The interior of the purification chamber is divided into an upper biological purification area and a lower sedimentation area by a horizontally arranged sieve mesh. The biological purification area is filled with packing materials, and a gas outlet is provided at the top. The first roller brush is arranged at the front end of the inlet, and the power unit is fixedly connected to the purification chamber. The power unit includes a driving wheel. The control system is electrically connected to the driving wheel, the first roller brush and the second roller brush respectively. The outlet of the air inlet pipe is communicated with a plurality of air diffusion holes, and the air diffusion holes are arranged on the surface of the first roller brush. The present invention utilizes the bionics principle to imitate scraping benthic animals, can realize the whole process of underwater in-situ treatment, avoid the external transportation and transfer of sediments, improve the treatment efficiency and reduce the energy consumption and cost.

The invention belongs to the technical field of river basin bottom mud sediment remediation, and particularly relates to an in-situ remediation material for river basin bottom mud sediment as well as a preparation method and application thereof, the in-situ remediation material comprises a framework material as well as an exogenous functional microbial flora and a local microbial complex flora which are loaded on the framework material; the framework material is prepared from coal gangue waste; the exogenous functional microbial flora is an anaerobic microbial flora; wherein the anaerobic microbial flora has the function of degrading aromatic compounds, and the aromatic compounds comprise polycyclic aromatic hydrocarbon, benzene series or phenolic substances; the native microorganism composite flora is obtained by screening sediment of river basin bottom mud; according to the method, the degradation capacity of the functional microbial flora is remarkably improved, meanwhile, harmonious symbiosis of the introduced exogenous functional microorganisms and the local microbial complex flora is effectively promoted, the continuous stability and high efficiency of the river basin bottom mud sediment remediation process are ensured, and the overall remediation effect of the river basin bottom mud sediment is remarkably improved.

The invention discloses a preparation method and application of a KGA adsorbent, and the preparation method of the KGA adsorbent comprises the following steps: carrying out primary ultrasonic uniform stirring on kaolinite and water, standing, and carrying out secondary ultrasonic uniform stirring to obtain a suspension; adding a FeCl3 solution into the suspension, and stirring to obtain a goethite mixed solution; adding a regulator into the goethite mixed solution to regulate the pH to weak acidity, adding a reducing agent to regulate the pH to weak acidity, aging at constant temperature, centrifuging, washing with water, drying and grinding to obtain the KGA adsorbent. The method is low in material cost, environmentally friendly, free of secondary pollution and easy and convenient to operate, and an efficient new way is provided for in-situ remediation of organic pollutants such as glyphosate in soil and sediments. The adsorbent KGA is prepared from goethite and kaolinite, so that efficient, low-consumption and environment-friendly adsorption and degradation of glyphosate are realized. KGA is used as a glyphosate adsorbent. The adsorption capacity is improved to 2.67 times through the synergistic effect of KGA, and the KGA has catalytic activity and provides a better solution for sediment repair.

The present application relates to the technical field of water area sediment remediation, and particularly relates to an in-situ sediment remediation device, which comprises: a carrier for floating on a water area; a feeding mechanism installed on the carrier and used for supplying remediation materials; a feeding mechanism connected with the output of the feeding mechanism and used for delivering the remediation materials into the sediment, wherein the feeding mechanism comprises a feeding rod and a feeding sleeve, and the feeding rod extends into the feeding sleeve to form a delivery channel for the remediation materials; and a driving mechanism installed on the carrier, wherein the output end of the driving mechanism is connected with the feeding mechanism and used for driving the feeding mechanism to extend into the sediment to deliver the remediation materials. In the present application, the carrier is arranged so that the in-situ sediment remediation device can float on the water area. The feeding mechanism is arranged to store the remediation materials and supply the remediation materials to the feeding mechanism. After the remediation materials are supplied to the feeding mechanism, the driving mechanism drives the feeding mechanism to act so as to deliver the remediation materials into the sediment to remediate the sediment.

The present teachings describe photocatalytic composite materials that are useful for remediation of bodies of water such as lakes, ponds, wetlands and rice fields, as well as remediation of sediment under the water.

This invention discloses a method for treating blackened and odorous water bodies using a combination of sulfur autotrophic denitrification and anaerobic ammonium oxidation. The method includes: collecting overlying water and sediment samples from the blackened and odorous water body; sealing and allowing the overlying water and sediment samples to stand to obtain a treatment sample; determining the content of volatile organic sulfur compounds in the sediment sample and calculating the theoretical dosage of calcium nitrate; adding 1.0 times the theoretical dosage of calcium nitrate to the sediment of the treatment sample, and adding SAD sludge and Anammox sludge to the surface layer of the sediment; continuously operating until any day between days 20 and 30, then adding 0.3 to 0.8 times the theoretical dosage of calcium nitrate; continuing operation until days 45 to 55 to complete the water body treatment. This invention not only effectively solves the problem of water quality deterioration caused by seasonal changes but also synergistically removes NH4 from the sediment. + It contains AVS and organic matter, thereby reducing the emission of greenhouse gases such as N2O during sediment remediation.

This invention belongs to the field of river and lake sediment remediation technology, and discloses an in-situ electric remediation system for river and lake sediments. The system includes an insulated remediation support frame with multiple openings on the walls of its upper and lower horizontal pipe groups; a pair of anode electrode rods inserted into a pair of opposite pipes in the lower horizontal pipe group; a pair of cathode electrode rods inserted into a pair of opposite pipes in the upper horizontal pipe group; the anode and cathode electrode rods are respectively connected to the positive and negative terminals of a power supply via wires; a remediation material package fixed to the upper horizontal pipe group of the insulated remediation support frame; an insulated positioning rod inserted into a vertical pipe for insertion into the remediated sediment; a rigid force transmission sleeve fitted onto the upper section of the insulated positioning rod; and a traction rope assembly, with one end of each traction rope fixed to the upper horizontal pipe group and the other end wound around a pulley and fixed to a rope shaft. The above system has a simple structure and can effectively remediate river and lake sediments contaminated with heavy metals.

The present teachings describe photocatalytic composites useful in the remediation of bodies of water, such as lakes, ponds, wetlands and paddy fields, as well as in the remediation of underwater deposits.

The present teachings describe photocatalytic composite materials that are useful for remediation of bodies of water such as lakes, ponds, wetlands and rice fields, as well as remediation of sediment under the water.

The present invention relates to the technical field of environmental remediation, and particularly relates to a sediment remediation agent containing bamboo active ingredients and a preparation method thereof, which comprises the following components in parts by weight: 30-50 parts of an oxidant, 5-12 parts of an ecological adsorbent, 2-6 parts of a composite microorganism, and 20-30 parts of a supported zeolite composite particle. The sediment remediation agent in the present invention can stably exist in the sediment, and through the synergistic effect among the components, it can provide a good microenvironment for the microorganisms in the sediment. By slowly releasing a biological promoter, it can not only enhance the role of the microorganisms but also improve the utilization rate, accelerate the degradation rate of organic pollutants in the sediment, achieve the best remediation effect, and at the same time, continuously release the biological promoter, which also inhibits the accumulation of organic pollutants in the sediment, thereby preventing secondary pollution of the sediment and achieving a continuous and efficient sediment remediation effect.