67results about How to "Conducive to ecological restoration" patented technology

The invention discloses a debris flow draining and guiding groove based on step type erosion protection dentated sill group and application thereof. the debris flow draining and guiding groove comprises flow limiting walls, and a step type erosion protection dentated sill group disposed therein connected and cooperated therewith; the step type erosion protection dentated sill group consists of a plurality of erosion protection dentated sills imbedded in a certain depth with a certain distance therebetween; the transverse length B of the erosion protection dentated sill in the direction perpendicular to the flow limiting wall is less than the width D of the debris flow draining and guiding groove; and the erosion protection dentated sills are staggered between the two flow limiting walls. Compared with the current technologies, the invention can fully drain the debris flow safely and smoothly with low cost, can meet the requirement from structrual type mud flow to mountain torrents burst in the drainage area; and can maintain the contacting of the aquatic organisms in the groove bed to benefit the groove ecology restoration.

The invention discloses method and device for biochemically recharging and restoring polluted soils in a chromium slag yard. The device comprises a soil treatment groove containing soils to be treated, a middle pond, a biochemical pond and a bacteria culture pond. Every two parts are connected through a water pipe, chromium polluted soils are installed in the soil treatment groove to be heaped after being crushed by a 2cm sieve, the height of a mound is smaller than 0.8m, and the soils are sprayed by Cr (VI) reducing bacteria (Pannonibacter phragmitetus BB) culture medium with the spraying strength of 0.008-0.015m<3> / h.m<2>; and leachate is collected from the bottom of a soil groove to the middle pond, bacterial liquid in the middle pond is pumped into the biochemical pond by an alkali resistance pump, and bacterial liquid in the biochemical pond circulates again to be used for spraying the soils and is in circulating spraying for 5-7 days until the soil leachate does not contain Cr (VI). By adopting the invention to restore the polluted soils in the chromium slag yard, the removal rate of water-soluble Cr (VI) in the soils achieves 99 percent, and the concentration of Cr (VI) leaching toxicity in the soils after restoring is lower than 0.5mg / L and achieves a standard limited value of roadbed materials and concrete aggregates in Technical Specifications for Chromium Slag Pollution Control (HJ / T301-2007). Simultaneously, the invention has the advantages of having simple technology, low cost and no secondary pollution, improving the physicochemical property of the soils, and the like.

The invention discloses a method for treating micro polluted water by using a biological nitrogen removal and physicochemical enhanced phosphorus removal combined process, and belongs to the technical field of water pollution purification treatment. The inlet water enters a biological contact oxidation tank through a lifting pump, and flexible fibers are used as a film forming filler and a rotary fan is adopted for aeration in the tank; the outlet water overflows to a quick filter tank, the bottom of the tank is provided with a backwashing pipeline, and the tank is periodically backwashed to avoid blockage; the outlet water of the quick filter tank passes through a deoxidization tank from bottom to top, so dissolved oxygen (DO) in the water is reduced, and a favorable condition is provided for subsequent denitrification; an facultative tank realizes denitrification by adopting a camphorwood leaf and ceramsite combined filler to remove TN; the outlet water flows into a flocculation reaction tank and is subjected to enhanced coagulation with stirring; and soil-liquid separation is performed in a phosphorus removal sedimentation tank, and the supernate flows through an anthracite filler device from bottom to top and finally flows into a lake. The method ensures that the substances such as chemical oxygen demand (COD), NH4+-N, NO3--N, TN, TP, SS, Chla and the like in the outlet water are furthest removed, and the outlet water reaches the class III water quality standard of Environmental Quality Standards for Surface Water (GB3838-2002).

The invention discloses a biological leaching restoring method for heavy metal polluted soil. After Penicillium chrysogenum F1 spore liquid is cultured in an improved Czapek liquid medium, leaching fungus liquid is obtained, and then the heavy metal polluted soil is leached, dried and crushed. By restoring the heavy metal (Pb, Zn, Cd and Cu) compound polluted soil according to the biological leaching restoring method provided by the invention, the removing rate of Pb in the soil is 14%, the removing rate of Cd is 63%, the removing rate of Zn is 54% and the removing rate of Cu is 56%. The biological leaching restoring method for the heavy metal polluted soil provided by the invention has the advantages of high speed in taking effect, high efficiency in removing heavy metal, absence of secondary pollution, and the like.

The invention relates to an algae-laden water separation process for scale and engineered treatment of a high concentration algae slurry, which comprises the step (1) of algae-laden water separation process and the step (2) of dewatering process, wherein in the step (1) of algae-laden water separation process, the algae slurry requiring to be processed is pumped in an algae slurry pool and then is pumped into a pipeline coagulation device, then the coagulation reaction is carried out on the algae slurry and a coagulant, and the obtained product is input into a secondary air floatation separation pool to carry out the algae-laden water separation; and in the step (2) of dewatering process, algae scums generated in the step (1) is scraped by a slag scraper into a scum tank and then flows into an algae slag pool, the algae slags are pumped into a high-speed shearing device by the pipeline, and then the product enters a horizontal screw sedimentation centrifuge to carry out dewatering. The invention has the advantages that adoption of the algae-laden water separation process can establish an algae-laden water separation station, remove more than 95 percent of algae in the high concentration algae slurry, take out nitrogen and phosphorus in the water to achieve the aim of purifying the water, solve the embarrassing situation that the blue-green algae cannot be treated after being salved, and form the scale and engineering treatment of the salved blue-green algae; the effluent water is clean and clear; and the algae-laden water separation process can effectively prevent and treat the water eutrophication and is very beneficial for ecological restoration.

The invention provides a deep nitrogen and phosphorus removal process for a surface water body. The process mainly comprises six working sections, such as contact oxidation, rapid filtration, anaerobic denitrification, flocculation reaction, phosphorus sediment removal and phosphate removal through adsorption. The process is realized on the basis of improvement, strengthening and combination of the traditional treatment processes integrates a biological method, a chemical method and a physical method and is used for removing various pollutants in the water body effectively; the sewage purifying efficiency is remarkably increased; and an entire treatment device is free from odor and secondary noise pollution; a natural flow type combination mode is adopted in the design without any multistage elevating pump or reflux pump; a back washing system is arranged in a rapid filter and used for periodic back-washing, so that the problems of blocking and power consumption are solved; and the entire process has the advantages of full automation, no need of manual guard, and convenience for management and maintenance.

The invention discloses a biological aerated filter using barley straws as substrates and an application thereof. The biological aerated filter comprises a filter body, a water inlet pipe, a water outlet pipe, an aeration pipe, a backwash fan, a backwash water pump, a reflux pump and filter material, wherein a filler line and a material supplementing line are arranged on the filter body and the filter material mainly comprises barley straws and active sludge. By using the barley straws as the filler material of the filter, the raw materials are inexpensive and easily available; the barley straws are only needed to be uniformly mixed with the active sludge and do not need to be subjected to other pre-treatment operations so that the operation is easy. The barley straws are gradually decomposed in the filter to release lignin and oxidation products, allelochemical substances such as esters, quinones and phenols, and the growth of harmful algae is inhibited by the allelochemical effect of plants; by using algae in the influent water and gradually decomposed barley straws inside the filter as biomass organic carbon sources, the biological denitrification process is promoted, the water quality is purified, the advantages of low price, ecological safety and the like are achieved and the method is an environment-friendly and safe control treatment method for algae-containing polluted raw water.

The invention relates to an ecological restoration apparatus for slightly-polluted river water body, and effectively solves the restoration problem of the slightly-polluted river water body. According to the technical scheme, the center of a frame is provided with a fixing plate through a bolt, uniformly-distributed water-permeable planting grooves are arranged on the frame, and emergent plant is planted in the water-permeable planting grooves; the upper part of the frame is paved with an artificially-synthesized matrix layer, and a wet-land dwarf cold-resistant plant is planted on the matrix layer and is apart with emergent plant; a vertical connection rope is tied to the lower part of the frame, uniformly-distributed biological membrane fillers are disposed on the vertical connection rope and are in serial connection, and the vertical connection rope is fixedly disposed on first gravel at the bottom of the water body; the frame is transversely fixedly connected with a timber pile on the river slope via a haulage rope, the frame is floated on the water surface; and multiple unit restoration apparatuses are in uniform serial connection and form a restoration apparatus array. The apparatus can enable the slightly-polluted water body to be subjected to omnibearing area purification, and is good in landscape effect, high in stability and impact resistance, also convenient to transport, easy to assembly and simple to run, and free combination can be realized.

The invention relates to a reconstruction method for a large-scale offshore wetland of a river or a lake or the sea. The reconstruction method comprises the following steps that the offshore wetland is subjected to spaced partitioning strip-block-shaped excavation, a formed land part is excavated into a channel communicating a water area, and a comb-shaped wetland form is formed; spaced artificial highlands are built in the offshore water area, and the length direction of the artificial highlands is consistent with the arrangement direction of the channel; animal raising and plant culturing are conducted on the land-based wetland, and a complete ecological system is built; after the land-based wetland evolves into a land and the channel evolves into a new land-based wetland, the land evolved by the land-based wetland is excavated, a new channel communicating with the water area of the river or the lake or the sea is formed, and then the comb-shaped wetland form is formed again; animal raising and plant culturing are conducted on the land-based wetland, and the complete ecological system is built; and the two steps mentioned above are repeated. By the adoption of the reconstruction method, the wetland is reconstructed with the low cost, the sustainable development ecological environment of the wetland is formed, and the reconstruction method is favorable to protection of habitats of aquatic resources and ecological restoration of eutrophic water bodies.

The invention discloses a method for planting cyperus malaccensis in a tidal wetland. The method mainly comprises the key links of the selection of a planting mud flat, a planting season, planting time, seedlings, provenance and the specification of ball-plants, planting, the application of growth hormone, basal dressing, topdressing, nursing and the like. According to the method for planting a salt marsh plant (cyperus malaccensis) in the tidal wetland, survival rate and growing speed of the cyperus malaccensis transplanted in the tidal wetland can be obviously increased, effective recovery and sustainable development of a coastal wetlands ecosystem are improved, and a certain yield can also be obtained from economic utilization of the cyperus malaccensis.

The present invention provides one kind of skin wound repairing agar / collagen dressing and its preparation process and application. Agar and collagen or gelatin are mixed, and the mixture is freeze dried to obtain porous compound rack or compound film for promoting the repair of skin wound, and the rack may be also used in other soft tissue engineering. The porous compound rack and compound film of present invention has simple operation, low cost and wide use, and may be used in repairing burnt and ulcer skin as well as for cartilage, cornea, fat and soft tissue engineering.

The invention discloses a preparation method of composite improved planting soil for vegetation restoration of mining slopes. The preparation method comprises following steps: (1), grinding distillers' grains, bagasse, diatomite and fly ash, and performing sieving to obtain a prefabricated material a; (2), thickening and dewatering municipal sludge, carrying out drying and smashing, adding iron tailing sand to be mixed uniformly, adjusting water content, then adding a binding agent, conducting granulation, feeding particles into a rotary kiln, carbonizing the particles at 500-600 DEG C for 20-30 min, performing cooling, and adding activated carbon and decomposed organic fertilizer to be mixed uniformly to obtain a prefabricated material b; and (3), uniformly mixing the prefabricated material a and the prefabricated material b, adding a fermented liquid to the mixture for decomposing at the decomposing temperature of 40-50 DEG C for 20-40 days, keeping the water content of the mixture at 16wt%-20wt% in the decomposing process, drying the mixture, adding polymaleic anhydride and polyvinyl alcohol to be mixed uniformly, and conducting granulation to obtain the composite improved planting soil for vegetation restoration of the mining slopes.

The invention relates to a dust-suppression and rock-discharge system utilizing tailing slurry and a dust-suppression and rock-discharge method. The system comprises a classification tailing sand preparation station and a batching rock-discharge system, wherein the tailing slurry is utilized to dedust a rock-discharge field when the two systems are used for open-cast mining and rock discharge; coal ash is added to the tailing slurry to fabricate mixed slurry at an earlier stage for the purpose of reducing abrasion of the tailing slurry to a pipeline; red mud is added to the mixed slurry at a later stage to fabricate gelling mixed slurry for the purpose that the red slurry can gel mixtures discharged by a dumping machine in the drying process; raised dust due to air drying is avoided; and gaps among rocks are decreased. With the adoption of the system and the method, water resources are saved; the gaps among the rocks discharged are decreased; potential safety hazards existing in a dumping field are eliminated; requirements of land reclamation are met; ecological restoration of a mine is facilitated; tailings are taken full advantage of and not discharged to a tailing pond; and investment and land resources are saved.

The invention provides a method for tailing pond microbial remediation with multiple sulfate-reducing bacteria EM2, SRB-4 and iron ion reducing bacteria Biometek-A. The above bacteria are introduced into tailings and nutrients needed by microbial growth are added to construct a set of tailing pond microbial remediation system. Some nutrients added into the tailings and growth of the reducing bacteria can inhibit the growth of inherent oxidizing bacteria in tailings and obviously inhibit the oxidation and dissolution of multiple heavy metal ions, thus improving the pH of tailings, lowering theredox potential, and at the same time greatly reducing the permeability of tailings. Therefore, the remediation method can reach a remediation effect on the tailing pond.

The invention discloses an extraction method of weathering crust elution-deposited rare earth ore. According to the extraction method, a biological leaching and organic acid (salt) combined leaching process is mainly adopted in the leaching stage, clean and efficient extraction of rare earth resources is achieved on the premise that the environment is not polluted, and the extraction method has the advantages of being good in leaching effect, low in cost, environmentally friendly and the like. According to the process, impurity dissolution can be reduced, and the rare earth separation efficiency and the product quality can be improved; microorganisms and metabolites of the microorganisms can enhance the permeability of a leaching agent, reduce leaching blind areas and increase the effective utilization rate of the rare earth resources, and pollutant degradation and ecological restoration are partially facilitated; and rare earth elements are enriched through solvent extraction and reverse extraction technologies, and then a high-quality rare earth product can be obtained through a precipitation method.

The invention discloses a preparation method of a thiolated chitosan nano modified attapulgite soil passivator and relates to the technical field of soil remediation materials. The method comprises the steps as follows: mixing three substances including chitosan, attapulgite and a surfactant, adding deionized water after mixing, performing ultrasonic dispersion and uniform mixing to obtain a suspension, transferring the suspension into a polytetrafluoroethylene reactor for a reaction, cooling a product to room temperature, and performing centrifugation, drying and grinding to prepare chitosanmodified attapulgite; after mixing the chitosan modified attapulgite with thioglycollic acid, adding a catalyst, conducting an oscillation reaction in a constant-temperature water bath under shieldingof nitrogen, and performing centrifugation, washing, drying and grinding to obtain the thiolated chitosan nano modified attapulgite soil passivator. The preparation method of the thiolated chitosan nano modified attapulgite soil passivator has the benefits and advantages that the preparation method is simple, has a good passivation effect and does not change physical and chemical properties of soil.

The invention provides an ionic rare-earth ore infiltration system reinforced leaching method. The infiltration process comprises the step of adding a leaching agent to perform leaching; and the method is characterized in that ZXT-16 is also added as a reinforcer in the leaching process. The separated ionic rare earths have the advantages of favorable leaching indexes, high leaching recovery rate and low production cost; and the novel reinforced leaching method has the advantages of high stability, high efficiency, favorable infiltration flow effect, sufficient exchange reaction, high leaching indexes, environment friendliness and no pollution, and is suitable for popularization and application.

The invention discloses a method for in-situ no-damage determination of the biomass of a submerged plant. The method comprises the following steps: (1) fencing a water area and setting a section; (2) determining characteristic parameters of the submerged plant: determining the height of the submerged plant in the section of the water area of quadrats along the section by utilizing an echo detector fixed on a running ship; (3) calculating SPVI: exporting quadrat section results determined by the echo detector; (4) building a regression model; (5) utilizing an inverse distance weight space interpolation method in AcrGIS software to perform spatial interpolation on the results exported by echo detection; (6) calculating an average value of the water depth, the height of the submerged plant and the cover degree obtained by the inverse distance weight method; and (7) investigating the future biomass of the submerged plant in the water area or the same type of water area, and obtaining the water depth, the plant height and the cover degree of the water area through the echo detection. The method is easy to implement, simple and convenient to operate, free of damage in situ and accurate in estimation, and is suitable for investigation of submerged plants in lakes and other shallow water.

The invention discloses a method and an equipment system for treating organic pollution waste gas during environment protection emergency, which are used for rapidly treating leaked volatile organism in environmental protection emergency. The equipment system comprises a gas treating system and a liquid collecting system, wherein the gas treating system comprises a collecting cover, a draught fan, a flame arrester and a dielectric barrier low-temperature plasma generator; the draught fan is mainly used for generating negative pressure, the volatile organic gas sequentially passes through the collecting cover, the draught fan and the flame arrester after absorption, and finally enters the dielectric barrier low-temperature plasma generator for oxidization; the liquid collecting system comprises a collecting bucket and a liquid collector, a collector tube is connected between the collecting bucket and the liquid collector, the collector tube is provided a valve which is used for controlling the on-off of the collector tube, and leaked liquid organism is collected by the liquid collector and then flows into the collecting bucket through the collector tube. According to the method and the equipment system, pollution of volatile organism to an emergency accident site is rapidly and efficiently treated, the harm of the organism to the environment, the air and the ecological system is lowered to the greatest extent, and the method and the equipment system can be applied to disinfection for a chemical weapon pollution site in the field of military.

The invention relates to a new type algae-resisting coating. According to weight percentage, the raw materials for preparing the coating comprise 40 to 60% of resin mixture of MEG resin and synthetic resin and 60 to 40% of organic solvent, wherein the MEG resin is 20 to 80% of the resin mixture. The invention also discloses an algae-resisting net for treating the algae water pollution in lake and library. The new type algae-resisting coating and the algae-resisting net technique can efficiently and durably treat the algae in lake and library. Through a plenty of tests, emergency and prevention are both tested. Grasses are planted on bottom silt so as to form a large area of plant cover, which is in favor of environmental restoration of the lake, and can treat both the symptoms and root causes.

The invention discloses an antibacterial composite biological material containing agarose acetate and a preparation method thereof. An antibacterial drug is added to a biologically-inertial agarose acetate electrospun fibrous membrane as a base; hydrogen bonds on the surface of the surface drug of composite fiber can be utilized so that antibacterial particles are firmly supported to the surface of electrospun fiber; therefore, the antibacterial composite biological material containing the agarose acetate is provided. The antibacterial composite biological material can prevent nutrient supplyof healing field tissues from being affected, and normal healing mechanism of the tissues is maintained; during release of the antibacterial drug, the material can degrade and disappear; degradation products never cause toxic and harmful effects to the tissues and the body, and the material can truly promote healing of antibacterial tissues. The antibacterial composite biological material has goodmechanical properties and biological compatibility and has degrading time that matches with healing time of infected tissues; the antibacterial composite biological material is suitable for antibacterial materials, regenerative medical research and clinical practice.

The invention relates to a novel soil amendment as well as a preparation method and application thereof. The novel soil amendment comprises a main material and an auxiliary material, wherein, according to the weight ratio, the main material comprises 300 to 400 parts of livestock manure, and 450 to 550 parts of bentonite; the auxiliary material comprises 0.5 to 1.5 parts of probiotics, 0 to 10 parts of an inhibitor, 5 to 10 parts of LSE-7 EDTA poly-element chelated salt, 0 to 30 parts of urea formaldehyde, 80 to 150 parts of humic acid, 3 to 8 parts of koelreuteria paniculata fungus, 0 to 8 parts of auxin, 0 to 20 parts of a rooting agent, and 0 to 2 parts of trace elements. The novel soil amendment can be swelled in water for 25 to 30 times, the water absorption rate reaches 300 percent,the water leakage and evaporation can be prevented, the growth environment of plants can be greatly improved, and the physical and chemical properties of the soil can be improved. Meanwhile, the novelsoil amendment also comprises various nutrients for the growth of plants, and after the novel soil amendment is mixed with sandy soil, water and fertilizer can be absorbed to form a water fertilizernutrition body, so that the growth of plants can be facilitated.

The invention discloses an improver for soil remediation. The improver comprises nanometer humic acid, micronized serpentine, diatomite micro-powder, a composite water retaining agent and a microbialpowder according to a weight ratio of (29-33):(10-14):(15-19):(4-6):(0.5-1.5). The invention also discloses a preparation method of the improver for soil remediation. The improver for soil remediationcan effectively increase the aggregate structure of soil, improve the void condition of soil, improve the nutrient content and the water retention and fertilizer conservation capability of the soil,reduce the content of heavy metals and organic pollutants in the soil and promote the growth of plants and microorganisms, and is conductive to ecological restoration of contaminated soil.

The present invention relates to a multifunctional trash rack. It includes the following several portions: trash rack frame, it is a reatangular frame which is made up by welding stainless steel angle-bars; supporting strips which are stainless steel flat bars respectively welded on the front side of said trash rack frame; filter core fixing strips which are stainless steel flat bars respectively bent into 'U'-shape and connected with two sides of trash rack frame; three stand bars which are stainless steel bars welded in the bottom portion of trash rack frame and formed into a stable triangular support; ad sponge filter core which is placed in the trash rack frame interior.

The invention discloses a gully land reclamation structure and method for loess plateau gully treatment and land reclamation. The gully land reclamation structure comprises original gully shallow soil, a filled loess foundation and a farmland. The original gully shallow soil, the filled loess foundation and the farmland are sequentially arranged on the original gully bed rock surface of the to-be-regulated gully land from bottom to top; the filled loess foundation comprises a bottom bearing layer, a middle transition layer and a top water filtering layer which are sequentially arranged from bottom to top, and the compaction degree of the bottom bearing layer, the compaction degree of the middle transition layer and the compaction degree of the top water filtering layer are gradually decreased. According to the invention, different filling soil layers achieve different functions by changing the compaction degree of the vertical filler of the filling project, so that the three functions of bearing weight, preventing and controlling collapsibility and filtering and draining water are achieved; the problem of filling soil of the loess plateau gully treatment and land reclamation can be effectively solved, safety and use of gully structures are guaranteed, and popularization and use are facilitated.

The invention discloses a risk management and control and ecological restoration method for a metal mine pollution site. The method comprises the following steps: S100, leaching, identifying and classifying solid wastes and polluted soil of the metal mine pollution site; S200, carrying out corresponding treatment on different types of pollution media; and S300, carrying out ecological regreening treatment on the treated metal mine polluted site. According to the method, the solid wastes and the polluted soil in the metal mine polluted site are classified and identified according to related standards, and pollutants with different properties are classified and treated, so that the pollutants are prevented from polluting surrounding soil and water through surface runoff or leaching; recovery of the ecological environment of the metal mine and safety of surrounding human settlement and the ecological environment are achieved.

The invention discloses an ecological remediation integrated dyke foot mud flat protective structure. The protective structure comprises boxes, geotechnical cloth, vegetation ecological concrete layers and plant units. The bottom of each box is provided with a plurality of first connecting holes. The internal bottom of each box is covered with the geotechnical cloth. The boxes are filled with planting soil. The planting soil is supported on the geotechnical cloth. Each vegetation ecological concrete layer is poured at an opening of the top of each box. The plant units are planted in the planting soil and extend to the outer side through the corresponding vegetation ecological concrete layers. The invention further discloses a protective method adopting the ecological remediation integrateddyke foot mud flat protective structure. Through the ecological remediation integrated dyke foot mud flat protective structure and method, dyke foot mud flats can be protected, and the ecological remediation effect of the mud flats can be improved.