45results about How to "Eliminate black odor" patented technology

The invention discloses a method for managing town black and olid river pollution in situ by utilizing biological repair technology, which takes the steps and measures of aerating and oxygenizing in riverway, adding a complex microbial agent, biologically repairing bottom sediment, arranging a bio-nest system and the like, so as to control and eliminate the exogenous and endogenous pollution of the river, purify the water quality of the river, improve the self-purification ability of the water body and achieve the purpose of eliminating black and olid. The method does not need to build structures in the riverway or lead the river water out of the riverway to be treated, or dredge the bottom sediment in the river, therefore the method is generally applicable to incomplete sewage interception and dredging or the rivers which can not be intercepted sewage or dredged temporarily, and the in situ treatment to the riverway which is affected by tide and has complicated fluid variation. Therefore, the method which can lead the water body to recover normal ecological function provides the practical, economic and convenient treatment method for various town black and olid rivers.

This invention provides a combined method for treating urban river surge with bioremediation as the major technique. The method comprises: pre-treating polluted water body of upstream urban river surge in an oxidation pool, performing biological oxidative remediation on bottom deposits in river, aerating river channel, performing bioremediation on middle reach water body, and performing ecological remediation on downstream water body. The method utilizes abandoned fishpond, vacant land or modified oxidation pool to perform pre-treatment on heavily polluted water body of urban river surge that cannot be treated by sewage interception. Then the method adopts biological oxidative remediation on bottom deposits to control internal pollution source of urban river surge, and artificial aeration, and biological-ecological remediation to effectively eliminate pollutants and odor of water body, improve water quality of urban river surge, and improve self-cleaning ability of urban river surge water body. The method is a feasible method in treating urban river surge.

The invention provides a black and odorous water / eutrophicated water treatment method and device, and application thereof. The method mainly comprises the following steps: (1) treating river course sediment; (2) treating by a bypass high-efficiency bioreactor; (3) oxygenating the river course; and (4) adding a microbial inoculant and a stimulant. The external sources are controlled: the upstream uncontrollable pollution source or severe black and odorous / eutrophicated water is pretreated by a bypass high-efficiency bioreactor, and the microbial-ecological restoration measures are taken to effectively control the black and odorous / eutrophicated water pollution sources. The black and odorous / eutrophicated water sediment is digested to reduce the endogenous pollution. The bypass high-efficiency bioreactor technique and the oxygenation technique are combined, so that the quality of the black and odorous / eutrophicated water is maintained; and the self-purification capacity of the water is enhanced, thereby providing a feasible restoration method for treating the black and odorous / eutrophicated water.

The invention relates to a black and odorous and eutrophication water body biological and ecological remediation and treatment process. The treatment process can carry out source biological and ecological interception on surface water pollution and is combined with terminal water body bioremediation. The invention can not only control pollution load entering a water body, but also beautify river way and revetment of lakes, and doesn't occupies need extra land. The water body biological remediation system can improve a water micro-ecosystem, restore water body biodiversity, improve the self-cleaning capability of the water body, and effectively improve the water quality of the water body. The invention has great popularization value on the treatment of surface water, especially urban rivers and lakes.

The invention discloses a black and odorous water bottom mud in-situ remediation material and a preparation method thereof. The material is prepared from an oxygen release agent, an ammonia-nitrogen oxidant, aggregates, a binder, a pH regulator and a solidification regulator. The black and odorous water bottom mud in-situ reduction and solidification function material is prepared from the following steps that all raw materials are mixed to be uniform, granulation is conducted, or a mold is filled with chemicals, maintenance is conducted, and after the maintenance period is finished, the material can be obtained. Accordingly, the applied materials are easy to obtain and friendly to environment, preparation is easy, and the cost is low; meanwhile, oxygen slowly released from the chemicals and hypochlorite ions can improve the redox potential of black and odorous water, ammonia and nitrogen can be oxidized, sulfur release is inhibited, and remediation can be provided for the black and odorous water efficiently and enduringly.

The invention provides a solar aerator which comprises a solar device, a connecting shaft, a buoyancy device, a storage battery, a motor, a controller, a sensing system, an aeration driving mechanism and an aeration impeller, wherein the buoyancy device is fixedly connected with the connecting shaft; the solar device is connected with the aeration driving mechanism and the motor through the solar device; the aeration driving mechanism is connected with the aeration impeller; a central shaft of the aeration impeller is vertically arranged; the motor is connected with the storage battery, the controller and the sensing system. According to the solar aerator, the solar device is utilized to convert solar energy into electric energy and the aeration impeller is utilized to stir water, so that the function of water aerating and water treating is achieved, the water quality is effectively improved, the organic pollutant in water is degraded, the black odor is eliminated, the alga and bottom mud endogenous pollution is reduced, the use ratio of solar energy is increased, the automatic aeration can be realized without extra power supply, and the energy conservation and the environment protection are benefited.

The invention discloses a method and a device for repairing a black and smelly water body in situ by utilizing a microbial fuel cell and aquatic plants. The method comprises the following steps: A, embedding a positive plate under a black and smelly water body-water interface; B, enabling root systems of the aquatic plants to penetrate through round holes formed in the positive plate; C, setting negative plates on a water-air interface, enabling the positive plates to suspend in water, and exposing the negative plates in the air; D, connecting the positive plate with the negative plates by using outer conductors and an external resistor, thus forming a current loop. The positive plate is located under a mud-water interface, round holes which are in equidistant array arrangement are formedin the negative plates, the root systems of the aquatic plants penetrate through the holes in the positive plate and are rooted in bottom mud, the negative plates are suspended on an overlying water -air interface, and the positive plate and the negative plates are sequentially connected through the external guide lines and the external resistor to form a current path. The method disclosed by theinvention is simple, the operation is convenient, and the structure is simple; absorption of the aquatic plants on nutrient substances is promoted, the black and smelly water body is converted into plant biomass, and blackening and smell as well as eutrophication of a water body are improved.

The invention discloses a magnetic purification system and a purification method for quickly purifying combined overflow sewage. The magnetic purification system comprises a water storage device for containing the combined overflow sewage, a sewage lifting device arranged in the water storage device, a coarse grille device arranged at a water inlet of the water storage device, a fine grille devicearranged at a water outlet of the water storage device, a charging device for feeding a material, a magnetized coagulation reaction device and a magnetic separation device, wherein the fine grille device comprises a grille pool, and a rotating drum grille and a backwash pump that are arranged in the grille pool; the magnetized coagulation reaction device comprises a mixing reaction tank; the magnetic separation device comprises a magnetic disc separator of magnetic floccules, and a slag discharge device communicated with an outlet of the mixing reaction tank; and a scraping device is arrangedbetween the slag discharge device and the magnetic disc separator. According to the magnetic purification system and the purification method, quick purification of the overflow sewage is achieved through a modular design; an integration degree is high; and the system and the method can be used for emergency treatment, are applicable to temporary treatment and can be recycled.

The invention discloses a denitrification sulphur removal-based in-situ black-odorous riverway bottom mud oxidization technology. The technology comprises the steps of: feeding a bottom mud oxidant, a bottom mud ammonia nitrogen extracting agent and a bottom mud acid-base conditioning agent into the black-odorous riverway in a wet-process or dry-process manner, the feeding quantity of the bottom mud oxidant ranges from (0.5-2):1 according to the mass ratio of the bottom mud oxidant and sulfide in the bottom mud, the feeding quantity of the bottom mud ammonia nitrogen extracting agent needs to meet the condition that the initial concentration of the bottom mud ammonia nitrogen extracted and released in interstitial water achieves more than 50mg / L, and the feeding quantity of the mud ammonia nitrogen extracting agent needs to meet the condition that the initial pH of the bottom mud is controlled to be 6.0-8.0. The sulfur, nitrogen and phosphorus of the mud can be synchronously removed, the blackness and odor of the riverway can be fast eliminated, the release of the bottom mud nitrogen and phosphorus can be inhibited, and the quality of water-in-water body can be improved; and the problem of eliminating the secondary release of bottom mud nitrogen in the black and odorous treatment process can be solved. The method is applicable to comprehensive treatment of a riverway (surge) taking organic matters, sulfide, nitrogen and phosphorus as mainly serious pollution sources.

The invention discloses a novel compositing agglomerant, and a riverway, lake in-situ dredging and ecological restoration technology. The novel compositing agglomerant comprises the following components in parts by weight: 70 to 90 parts of diatomite, 20 to 30 parts of aluminium potassium sulfate, 20 to 30 parts of sodium carbonate, 15 to 20 parts of an inorganic chelating agent, 15 to 20 parts of a buffering agent, 8 to 10 parts of an enzyme biological accelerator and 6 to 8 parts of a deodorizing agent. In-situ dredging is adopted, construction is directly conducted in the riverway or the lake, and sludge obtained after treatment does not need to be transported outwards and filled, so that a large amount of manpower and financial resources are saved, and secondary pollution is avoided; due to in-situ dredging, sludge residues at the bottoms of the river and the lake are eliminated maximally, and activation and recovery of soil family microbial culture in riverbed and lake base mud are benefited; the novel compositing agglomerant has the advantages of high agglutination and settling speed, low water content of the sludge and small occupied land during operation, and meets the requiremets of river and lake management, so that water quality is improved, the activity of the river and lake sludge is recovered gradually through management, the river and the lake recover the self-cleaning capability, and ecological balance is achieved.

The invention relates to a method and a system for improving water quality of a black and odorous water body in a river channel. The method is characterized in that the downstream water body of the river channel is extracted, non-soluble organic pollutants, total phosphorus and solid suspended matters in the water body are removed by a magnetic coagulation treatment technology, the turbidity of the water body is reduced, and the transparency of the water body is improved; the water body treated by the magnetic coagulation treatment technology is transported to the upstream of the river channelas a water supplement source of the upstream water body of the river channel, supplementing water flows automatically with the upstream water body of the river channel to the downstream of the riverchannel, and the S1 step process is repeated to form a living water cycle; aeration and reoxygenation are performed on the water body of the river channel, the dissolved oxygen concentration of the water body of the river channel is improved, and the oxygen content of the water body is improved; the ecosystem of the water body of the river channel is restored, dissolved organic matters in the water body of the river channel are purified; the method breaks through the problems that not-up-to-standard COD, ammonia nitrogen, and total phosphorus of the current water body treatment, and lack of self-purification ability of the river channel. The main indicators of the water body of the river channel treated by the method and system can reach the standard of surface water type IV water.

The invention relates to an oxygenation power generating windmill with a vertical shaft. The oxygenation power generating windmill comprises a vertical shaft windmill blade, a vertical center shaft, a braking system, a power generator, a storage battery, a controller, a sensing system, a transmission mechanism and oxygenation impellers. Part of wind energy is converted into kinetic energy for the oxygenation impellers through the transmission mechanism, and the oxygenation impellers stir water to promote convection exchanging and liquid level updating to achieve the oxygenation water control function. The other part of wind energy is converted into electric energy through the power generator, so that the power generation function of the windmill is achieved. When the wind speed is higher than a certain value, the braking system is started to prevent the blade from being damaged. By means of the windmill with the vertical shaft, oxygenation water control is achieved through the wind energy, and meanwhile excess mechanical energy is converted into electric energy; and the utilization rate of the wind energy is increased, the generated electric energy can be used for the braking system, the controller and the sensing system of the windmill and the like, and the efficiency of the windmill is further optimized.

The invention discloses a culture method of a fungicide for water purification. The method comprises the following steps: taking target water of water to be restored; mixing 60-70wt% of the target water, 20-25wt% of a microbial nutrition agent and 10-20wt% of a microbial inoculum through first mixing the target water with the microbial nutrition agent, then adjusting the pH value of the obtained mixed solution to be same to the pH value of restored water, and finally adding the microbial inoculum; and carrying out aeration oxygenation on the mixed solution 2-3 times every day for 3-5d to keep the concentration of dissolved oxygen to be 2-3mg / L, reducing the concentration of the dissolved oxygen to the concentration of the dissolved oxygen in the restored water when the concentration of florae reaches 10<2>-10<3> / mL, and completing the method when the concentration of the florae reaches 10<5>-10<6> / mL. Compared with like products in the prior art, the fungicide cultured through the method has the advantages of good adaptability, good practical sewage biological treatment effect and low cost.

The invention discloses a black and smelly river channel sinking type green space processing system and a processing method thereof. The system comprises river blocking water intake units, water diversion units and sinking type green spaces; the river blocking water intake unit is arranged at the upstream of a black and smelly river channel; each side of the black and smelly river channel is respectively provided with the water diversion unit and the sinking type green space, the water inlet of the water diversion unit is communicated with the water outlet of the river blocking water intake unit, and the water outlet of the water diversion unit is communicated with the water inlet of the sinking type green space; the surface of the sinking type green space is sequentially provided with a clay layer, a soil layer and a gravel layer from bottom to top, and aquatic plants are planted on the soil layer; the sinking type green space is provided with a water outlet, and the sinking type green space is used for treating sewage in the black and smelly river channel. The black and smelly river channel sinking type green space treatment system can be continuously applied for a long time, haslow cost, can give full play to the overall advantages, improves the purification treatment capacity of the river channel to a black and smelly water body, can improve the urban water body and the land landscape, and has obvious overflow effect.

The invention discloses a heavy metal solidification stabilizing agent for polluted bottom mud and a preparation method thereof. The heavy metal solidification stabilizing agent is prepared from the following components: 10 to 15 parts of sodium silicate, 10 to 12 parts of magnesium oxide, 6 to 9 parts of hydroxy carboxylic acid metal chelating agent, 8 to 10 parts of Ca2O2, 18 to 25 parts of CaO,14 to 16 parts of Al2(SO4)3, 8 to 12 parts of FeO, 25 to 30 parts of bone meal, 10 to 14 parts of chitosan, 10 to 13 parts of chitin and 16 to 24 parts of lactic acid; a preparation method of the heavy metal solidification stabilizing agent comprises the following steps: 1) preparing materials; 2) preparing solid particles and grinding; drying ground mixed powder; 3) mixing the treated mixed powder, the bone meal and the lactic acid and pelletizing. According to the heavy metal solidification stabilizing agent disclosed by the invention, a soil framework and a pore structure of the polluted bottom mud is ensured, the releasing of endogenous pollution is reduced, the pH (Potential of Hydrogen) value is regulated, an ecological habitat of substrate microorganisms is improved, and a continuous self-purification capability on overlying water and the endogenous pollution is recovered.

The invention belongs to the field of water treatment, and particularly relates to a biological improver for black and odorous water bottom sludge. The biological improver is prepared from the following raw materials according to parts by weight: 20-25 parts of modified diatomite, 10-15 parts of polyaluminium ferric sulfate, 10-15 parts of bentonite, 10-15 parts of chitosan, 10-15 parts of bambooshells, 8-15 parts of vitex barilla extracts, and 10-15 parts of a microbial agent. The biological improver provided by the invention has the advantages that the polluted sludge can regain a positivesoil framework and a positive pore structure, so that the reproduction and activation capabilities of benthonic organisms can be enhanced, endogenous pollution and release can be reduced, the substrate redox potential can be improved, the amount of dissolved oxygen in the bottom sludge can be increased, and the bottom sludge can no longer be black and odorous.

The invention discloses a submerging type ecological water cube system used for black and stink water body pollution treatment, ecological restoration, and water quality improvement in rivers, lakes,reservoirs, river mouths, and gulfs. The submerging type ecological water cube system comprises submerged plants, a net-shaped framework, submerged plant plantation interfaces, a biological filling material inoculated with microbes, and light sources; the submerged plants grow on system upper surface and peripheral side surfaces respectively, so that full utilization of the three-dimensional spaceof the water body is realized, and the contact effect area of plants with water body is enlarged; the external light sources are used for supplement of deficiency of natural illumination; the biological filling material is inoculated with a microbial agent to realize adsorption, conversion, and degradation of pollutants with microbes, promote water plant photosynthesis and adsorption effect on nitrogen and phosphor eutrophication salts, eliminate water body black color and stink smell, establish a water body ecological system, and recovery and improve water body self cleaning capacity.

The invention relates to a microbial water body in-situ treatment flora purification body and a sewage treatment method adopting the same. The microbial water body in-situ treatment flora purificationbody comprises the following components in parts by mass: 30-40 parts of a flora adsorption body, 2-7 parts of a microbial compound bacteria solution, 3-7 parts of a carbon source, 40-60 parts of clay, 2-7 parts of rice bran and 2-8 parts of bottom mud. According to the microbial water body in-situ treatment flora purification body, microbial florae can be better fixed to river sediment to be treated, the situation that the microbial florae are easily washed away and dispersed by water flow like bacterial liquid is avoided, and therefore the microbial florae can fully react with harmful pollutants in the sediment to absorb, degrade and convert the pollutants in a river. Therefore, the black and odorous water body and the black and odorous bottom mud are locally reduced and improved at theoriginal position, a better sewage treatment effect is further obtained, finally, an original water area ecological circulation system is restored, the self-purification capacity of the water area isrestored, and the treatment effect is remarkable.

The invention discloses a method for treating contaminated tidal river reach mud cake. The method comprises the following steps: (1) onsite monitoring, collecting and detecting a contaminated tidal river reach sediment sample; (2) taking a quantitative amount of an oxidant, preparing a sediment modifier, and uniformly sprinkling the sediment modifier on an ebbed exposed riverbed after tide ebbingin order to form a first covering layer; (3) collecting and detecting a water sample at the contaminated tidal river reach mud cake; (4) taking a quantitative amount of an algicide, preparing a powderfrom the algicide, and uniformly sprinkling the powder on an exposed riverbed to form a second covering layer; and (5) mutually cooperating the first covering layer with the second covering layer toachieve continuous proceeding of surface oxidation and alga killing effects of sediment, ,digest original sediment skin cakes and continuously prevent the surface of the sediment from forming cakes. The method enhances the sediment modifying and alga killing effects through the mutual synergistic enhancement effect of the covering layers by using the tide rising and tide ebbing opportunity of thecontaminated tidal river reach in order to make the contaminated river reach rapidly and lastingly treated.

The invention discloses a remodeling method of a polluted river and lake bottom mud-water aerobic interface. The method comprises the steps of 1, analyzing bottom mud; 2, adding a potassium hydrogen persulfate composite salt solution; 3, adding a calcium peroxide solution; 4, aerating the surface layer of the bottom mud; 5, adding large benthonic animals; determining the distribution depth of the polluted bottom mud; adding the potassium hydrogen persulfate composite salt solution to the bottom of the bottom mud heavy pollution layer; adding the calcium peroxide solution to the bottom of the bottom mud heavy pollution layer; after the content of dissolved oxygen 20cm above the bottom mud-water interface is increased to 2mg / L or above and lasts for 1h, continuously aerating the surface layer of the bottom mud; and after the dissolved oxygen content at the position is increased by 4 mg / L or above and lasts for 1 h, adding large benthonic animals into the bottom mud. According to the invention, the aerobic condition of the bottom mud-water interface can be recovered, the depth of an aerobic oxidation layer in the bottom mud is increased, the content of organic pollutants in the bottom mud is reduced, and the polluted bottom mud is transformed into a water body pollutant digestion tank and aquatic organism appropriate soil.

The invention discloses a city and town river and lake water ecological restoration method based on a new restoration mode of mud first and water second. The method is used for city and town river and lake bottom mud in-situ restoration and micro-ecological reconstruction, and comprises the following steps: synchronous reduction of anaerobic bottom mud carbon, nitrogen and sulfur pollutants is realized through SedCaN particles, based on microbial acclimatization and spreading, in-situ regulation of a bottom mud microbial community structure is realized, and construction of an aerobic microbial ecosystem is realized. According to the invention, the river and lake pollution in-situ treatment mode and method have the advantages of low energy consumption, low cost, higher efficiency, higher comprehensiveness and higher safety, can realize an in-situ treatment target of construction of a water body-bottom mud healthy ecological system and collaborative reduction of pollutants, can remove 95% of oxygen consumption pollution such as bottom mud sulfide and the like within 15 days, basically eliminates black and odorous bottom mud, solves the technical bottleneck that the natural environment of the polluted bottom mud is difficult to quickly recover by an aerobic process, shortens the construction period by more than 30 days, and can save the cost by more than 40-50%compared with a desilting scheme.

The invention discloses a bioactivator for repairing river, lake and landscape water bodies. The bioactivator is prepared from the following components by weight percent: 30-50% of amino acid, 10-30% of vitamin, 10-30% of organic acid, 5-15% of inorganic salt, 1-5% of microelements, 1-5% of hormone, 1-5% of purine and 1-5% of pyrimidine. The bioactivator is prepared according to the ratio in use and a solution of the bioactivator is fed to a to-be-treated water body, and the feeding concentration is 1-5g / m<3>. The bioactivator is capable of prompting microorganisms to quickly and greatly grow in a relative poor environment to form a good zoogloea, so that the organic pollutant degradation efficiency of the microorganisms is improved and the water body treatment effect is improved.

The invention discloses a microbial remediation agent for black and odorous water treatment and a preparation method of the microbial remediation agent. According to the technical scheme, black and odorous water can be effectively eliminated; the microbial remediation agent comprises high calcium, water, bentonite, zeolite powder and microbial strains, and the microbial strains are selected from dominant microorganisms which are high in oxygen utilization rate, high in inhibition on other micro-aerobic microorganisms and anaerobic microorganisms and large in decomposition acting force (high inenzyme activity index) to efficiently remove pollutants in bottom mud and the water body; therefore, the ERM bacteria are selected in the technical scheme; meanwhile, the treatment effect of the black and odorous water body is further improved by utilizing the adsorbability of zeolite and bentonite. The invention discloses the microbial remediation agent for black and odorous water treatment anda preparation method of the microbial remediation agent, the process design is reasonable, the operation is simple, the black and odorous water treatment is effectively solved, the content of dissolved oxygen in water body and bottom mud is improved, a suitable benthic ecological environment is created for benthic animals, and suitable bottom mud soil conditions are provided for aquatic plants.

The invention discloses an ecological water square module used for black and stink water body treatment and water quality improvement. The ecological water square module used for black and stink waterbody treatment and water quality improvement comprises submerged plants, a biological filling material, a net-shaped framework, and light sources; the submerged plants are used for adsorption on nitrogen and phosphor eutrophication salts in precipitated bottom sludge and suspended in water body; the artificial light sources are used for promoting photosynthesis of water plants, promoting submerged plant growth and breeding, and improving water body transparency and treatment effect; the biological filling material is inoculated with a microbial agent to realize adsorption, conversion, and degradation of precipitated bottom sludge and pollutants suspended in water body with microbes, eliminate water body black color and stink smell, establish a water body ecological system, provide aquatic animals with an inhabit environment, accelerate recovery of water environment capacity, and realize water body self cleaning.

An agent delivery device is mounted in an excavator, and can be used in match with mechanical equipment provided with hydraulic systems. An agent hopper used for storing an agent is arranged above a cover plate of a distributor of a hydraulic excavator. A spiral conveyor shell penetrates and is connected to the lower part of the agent hopper. A medium mixing container formed by separating the spiral conveyor shell with a valve plate is outside the shell of the agent hopper. An agent and sludge are uniformly mixed, thus achieving an objective of implanting the agent to bottom mud, promoting andactivating dominant microbes of a riverway to allow continuous mass propagation of the dominant microbes, and effectively reducing organic maters, total phosphorus, total nitrogen, COD, and other indexes of black and odorous bottom mud, and therefore, black and odorous phenomena of a water body are eliminated and a riverway self-cleaning capacity is recovered. Compared with traditional outward riverway sludge transportation, the device greatly saves the engineering cost, is convenient and rapid for sludge treatment, allows a black and odorous riverway to become clear, and is of great significance for environment protection.

The invention relates to a water treatment method, and particularly relates to a sewage purifying method. The sewage purifying method includes steps of (1), pretreatment: pre-treating sewage, and removing suspends / floats and impurities in the sewage; (2), vortex micro-flocculation treatment: adding coagulant in the water acquired through pretreatment or adding coagulant and coagulant aids, performing vortex micro-flocculation treatment; (3), microfiltration: micro-filtering water body acquired through vortex micro-flocculation treatment, intercepting particles of which grain diameter is more than 10 miu m in the water body; acquiring the purified water and sewage. The sewage purifying method is short in water retention time, and high in handling efficiency, sewage removal rate and outer producing rate.

The invention belongs to microbial water body restoration, and particularly relates to a microbial agent for treating a black and odorous water body in complicated closed conduits and application thereof. The microbial agent is prepared by mixing 15 to 30 weight parts of enterococcus faecalis, 5 to 10 weight parts of lactobacilli, 25 to 50 weight parts of bacilli and 5 to 10 weight parts of saccharomycetes through fermentation. The compound efficient microbial agent and micro-nano bubbles synchronously and gradually flow from branch streams to trunk streams of the closed conduits; in the process, bioactive substances, oxygen bubbles and riverway suspended matters or suspended bottom mud are sufficiently mixed; mixtures are fast adsorbed onto suspended particles; pollutants of the water body are degraded through the biological metabolism process; and the blackness and the odor of the water body are reduced, so that the quality of the water in the complicated closed conduits is effectively improved.

The invention discloses an improver for improving river reservoir contaminated sediment matrix. The improver comprises: 6.3%-8.5% of Ca2O2, 20.3%-22.8% of CaO, 11.4%-13.5% of Al2(SO4)3, 8.5%-10.3% ofFeO, 28.5%-30.3% of bone meal, 9.5%-12.5% of chitosan, and 10.4%-12.6% of chitin. The improver provided by the invention enables the contaminated sediment matrix to restore a benign soil skeleton andpore structure, reduces endogenous pollution release, enhances the matrix redox potential, improves the microhabitat of the matrix, and restores the sustainable self-purification capacity to overlyingwater and endogenous pollution.

The invention provides a method for ecologically restoring river sediment. The method comprises the following steps in sequence: (1) preparing an arbuscular mycorrhizal fungus inoculant; (2) inoculating an arbuscular mycorrhizal fungus inoculant to aquatic plants in a terrestrial environment to obtain aquatic mycorrhizal plants, wherein the aquatic plants comprise emergent aquatic plants and submerged plants; (3) aquatic mycorrhizal plants are transplanted into the river sediment, emergent aquatic plants are planted under the water depth of 0-0.5 m, and submerged plants are planted under the water depth of 0.5-1.2 m; and (4) managing the grown aquatic mycorrhizal plants, and regularly cleaning dry branches and fallen leaves. Aquatic plants are inoculated with arbuscular mycorrhizal fungi in a terrestrial environment, so that aquatic mycorrhizal plants with a relatively high infection rate can be formed, the adaptability of the plants is improved, the growth of the plants in a polluted environment is promoted, and the absorption of the plants to nitrogen, phosphorus and heavy metals is enhanced, thereby improving the restoration of phosphorus and heavy metals in river sediment.