549 results about "Environmental safety" patented technology

The invention relates to the technical field of an oil-based drilling fluid for petroleum drilling, in particular to an environmental-friendly type oil-based drilling fluid and a preparation method therefore. The environmental-friendly type oil-based drilling fluid is prepared from the following raw materials: base liquid white oil, calcium chloride water solution, an emulsifying agent, a wetting agent, organic oil for drilling fluid, a composite plugging agent, a shear strength improving agent, a basicity regulating agent and a fluid loss additive; and a weighting agent is added into a mixture of the raw materials. The oil-based drilling fluid has the following advantages of: good plugging property, high shear viscosity and strong rock carrying capability; the EC 50 (median effect concentration) of the drilling fluid is larger than 3*104mg/L; the drilling fluid has good environmental safety; the return permeability of the drilling fluid can reach 90%-98%; the drilling fluid has little damage to reservoirs; the preparation process of the drilling fluid is simple; the drilling fluid is mainly applied to a special construction technology such as underbalance, horizontal wells and the like, water sensitivity reservoirs and low-pressure low permeability gas wells.

The invention belongs to the technical field of comprehensive utilization of waste resources from the aluminum industry and specifically discloses a comprehensive utilization method of aluminum ash. According to the comprehensive utilization method of aluminum ash, metallic aluminium is extracted from aluminum ash through an ore grinding method; the aluminum ash obtained after aluminium extraction undergoes catalytic deamination; the aluminum ash obtained after deamination is mixed with alkali and granulation forming is then carried out; and the granulation product is sintered and the sintered product is finally dissolved out. By the above method, useful components in the aluminum ash can be recovered to the maximum; ammonia gas which has been ignored for a long time is effectively recovered; components such as aluminium oxide, villiaumite and the like are recovered and utilized to the maximum; pollution of aluminum ash processing to the environment is avoided; atmospheric dust pollution is avoided; atmospheric pollution is also avoided due to ammonia gas recovery; pollution of aluminum ash stacking to underground water and soil is avoided due to extraction and recovery of fluoride salt; and environmental safety during the treating process is guaranteed.

The invention relates to soil heavy metal pollution treatment technology, in particular to a chemical leaching restoration method used for heavy metal and arsenic mercury polluted soil. Prior soil chemical leaching restoration methods concentrate on the polluted soil caused by one or a plurality of heavy metals (cadmium, copper, lead and zinc, etc.,), which do not have ideal restoration effect to soil with the pollution of both arsenic in the form of negative ions and mercury which is volatile metal. Aiming at the problem, the method uses the combination of three reagents, namely, Na2EDTA, oxalic acid and KI and leaching method with fractional steps for realizing the chemical restoration of the cadmium, the copper, the lead, the zinc, the arsenic and the mercury, etc., in the polluted soil so that the heavy metal in the polluted soil can reach the environmental safety standards. The soil after the leaching treatment is washed by water, and then is refilled in the original position; therefore, no secondary pollution can be caused.

Information is received from a set of peer clients associated with a client, the information indicating likelihoods of peer client exposure to malware threats. An environmental safety score associated with the client is determined based, at least in part, on the information received from the set of peer clients, wherein the environmental safety score indicates a likelihood that the client is exposed to malware threats. A set of malware signatures is retrieved from the server at a time determined responsive to the environmental safety score and stored.

The invention discloses a fluoro methoxylpyrazole-containing o-formylaminobenzamide compound shown as a structural formula (I) or agriculturally suitable salts thereof, a synthesis method and application thereof. The fluoro methoxylpyrazole-containing o-formylaminobenzamide compound has the advantages of effectiveness, low toxicity, low cost and environmental safety and can be used for preventingand removing various pests in the fields of agriculture and horticulture or pests parasitized on animals. The fluoro methoxylpyrazole-containing o-formylaminobenzamide compound has very high activityon lepidopteran pests (plutella xylostella, spodoptera exigua and cotton bollworm), hemipteran pests (black peach aphid and aphis craccivora koch), homopteran pests (nilaparvata lugens), dipteran pests (liriomyza trifolii) and leaf beetle pests (phaedon conchleariae). Particularly, good effect on the lepidopteran pests, the hemipteran pests and the dipteran pests can be achieved under the condition of low dosage of the compound.

The invention discloses a novel wood preservative comprising the following raw materials: cnidium monnieri, radix sophorae falvescentis, fructus kochiae, radix stemonae, smilax glabra roxb, chinaberry roots, chinaberry bark, and the like. The novel wood preservative adopts traditional Chinese medicines as the wood preservative which has the functions of resisting bacteria and preventing insects, has a certain inhibit function for wood-destroying fungi and is a green environmental-protection material completely. The traditional Chinese medicines have low cost; compared with a chemical agent, the prepared wood preservative can reduce the cost; the traditional Chinese medicines have a simple preparation technology and can save energy consumption, a Chinese medical preparation is mainly prepared by cooking and only needs simpler devices; and the traditional Chinese medicines have good antiseptic effect, are an absolute green resource and have higher environmental safety when being compared with the chemical preservative.

The invention provides a biocontrol bacterial strain for preventing and treating plant diseases and its bacterial agent, belonging to the field of biological control. The strains used are Gram-negative bacteria, identified as Lysobacter enzymogenes, and the strain code is OH11. Strain OH11 has no flagella but has slippage, can produce various extracellular hydrolytic enzymes including chitinase, β-1,3-glucanase and protease, and can effectively inhibit the growth of fungi and bacteria. The antibacterial zone diameters of strain OH11 against Sclerotinia sclerotiorum and Phytophthora capsici were both greater than 22.0 mm; the antagonism against potato ring rot was stronger, and the diameter of the inhibition zone reached 50 mm. The OH11 strain was inoculated into the seed tank, cultivated to the logarithmic growth phase, and the seed liquid was connected to the production tank for cultivation. The medium used in the production tank was the same as that of the seed tank. The liquid fermentation adopts aerobic submerged fermentation and fed-batch process, the dissolved oxygen is 15%-20%, the fermentation temperature is 30°C, the fermentation time is 72h, and the initial pH value is 7.5. After the fermentation is completed, the culture solution is taken out of the tank and directly packed into liquid dosage forms with plastic packaging barrels or packaging bottles, or subpackaged into solid dosage forms with peat adsorption packaging bags. The biocontrol strain OH11 can effectively control plant pathogenic fungi, bacteria, nematodes and other diseases, and the overall control effect is 50%-70%. In the greenhouse pot experiment, the control effects of OH11 on pepper blight and tomato bacterial wilt reached 83.6% and 86.4%, respectively. Strain OH11 has the characteristics of broad antibacterial spectrum, high activity, and environmental safety. In today's serious pesticide pollution, zymolysobacterium and its bacterial agent will be a good substitute.

The invention discloses a construction method of an overlapped shield tunnel. The construction method of the overlapped shield tunnel comprises the following steps that a downlink shield tunnel is tunneled, and a tunnel structure adopts a reinforced pipe piece; a soil body clamped between an uplink tunnel and the downlink tunnel is grouted through grouting pipes in secondary grouting holes of the downlink tunnel; a trolley supporting system is arranged inside the downlink tunnel to protect the downlink tunnel before the uplink tunnel is constructed; the uplink tunnel is tunneled, and downlink tunnel supporting trolleys keep synchronous advancing with the tunneling of the uplink tunnel in the construction process; the soil body clamped between the uplink tunnel and the downlink tunnel is grouted through the grouting pipes in secondary grouting holes of the downlink tunnel. The construction method of the overlapped shield tunnel is suitable for the overlapped shield tunnel in the city underground engineering construction, can guarantee safe construction of the overlapped shield tunnel, and enables control measures to be operable, the construction is convenient and rapid, influences of construction on the structure of the overlapped shield tunnel are reduced, influences on the ambient environment are few, and environmental safety risks can be reduced.

The invention discloses a system and a method for linkage of an electric power tunnel inspection robot and a fire extinguishing system. The method includes: a control platform sends fire disaster signals to the robot and controls fireproof doors to close after detecting a fire disaster in a tunnel; after receiving the signals, the robot moves towards the fire disaster, controls the corresponding fireproof door to open and closes the fireproof door after passing through; the robot verifies the fire disaster and calculates the distance between a fire origin and the robot after reaching a highest-temperature zone; the robot aims at a target in the fire zone and controls nozzles to release fire extinguishing materials to the target; fire extinguishment is finally realized by linkage control of the control platform, the fireproof doors and the robot. The robot is capable of freely passing through fire compartments of the electric power tunnel, once the fire disaster is detected, all of the fireproof doors are closed in a linkage manner, the robot quickly arrives at the fire point to check fire conditions, and firefighting steering engines are directly adopted for aiming at fixed points to extinguish fire. The system and the method for linkage of the electric power tunnel inspection robot and the fire extinguishing system have the advantages of quickness in reaction, information accuracy and flexibility, and accident risks can be greatly reduced to guarantee tunnel environmental safety.

The invention relates to an environmental safety monitoring and escape guide system and a warning escape method. The environmental safety monitoring and escape guide system comprises a personal mobile terminal, an environment sensing unit, an escape indication unit and an environment safety monitoring terminal. The personal mobile terminal comprises a mobile terminal positioning unit for obtaining position information and a mobile terminal signal transceiving unit for transmitting the position information. The environment sensing unit is arranged at a monitoring place so as to induce and obtain an environment parameter. The escape indication unit displays an escape direction. The environment safety monitoring terminal comprises a monitoring terminal processing unit, a monitoring terminal signal transceiving unit and map information, and the map information comprises an escape exit and a refuge place. A disaster warning signal is generated according to the environment parameter, the position information is obtained through the monitoring terminal signal transceiving unit, an escape route is planned according to the position information, the escape exit and the refuge place, and a control signal is transmitted for controlling the escape direction displayed by the escape indication unit.

The invention discloses a plant pathogenic fungus antagonistic bacterium strain and application thereof in preventing and treating plant diseases. The antagonistic bacterium is Bacillus subtilis ZSH-1, and the collection number is CGMCC NO.9025. The Bacillus subtilis ZSH-1 is separated from poplar root soil, and can prevent and treat plant diseases caused by poplar anthracnose bacterium, poplar rot bacterium, willow rot bacterium, apple rot bacterium, birchleaf pear rot bacterium, Fusarium oxysporum and date corky core bacterium. The antibacterial volatile matters generated by the antagonistic bacterium can also prevent and treat plant diseases caused by poplar anthracnose bacterium, poplar rot bacterium, willow rot bacterium, apple rot bacterium, birchleaf pear rot bacterium, Fusarium oxysporum and date corky core bacterium. The Bacillus subtilis ZSH-1 is a biological control potential strain with high prevention effect, wide preventing and treating range and high environmental safety, and has favorable development and application prospects.

The invention of Integrated Versatile and Systems Preparation of Specimens relates an open module technology which integrates synchronously the methods of protection, isolation and alteration of specimens into the “One for All” product or kit. The product or kit comprises a core module without or with Plug-in modules and a set of comprehensive protocols which can simultaneously or individually isolate systems biomolecules including DNA/ccfDNA, Large RNA/mRNA/ccfRNA, Small RNA/miRNA/ccfmiRNA, Protein, Lipid, Carbohydrates, and Metabolite versatilely from a vast variety of specimens including solid specimens and liquid specimens. The product or kit can accept new and custom Plug-in modules to expand functions and applications. The product or kit prepares specimens and biomolecules with features and benefits of high quality, easy, fast, no toxicity, safe to user and environment, low demanding, cost-effective, reducing waste, saving nature resources and protecting environment, and leads to a low-carbon and Green economy in preparation of specimens.

A planar nanospectrometer formed as a single chip that uses diffraction structures, which are combinations of numerous nano-features placed in a predetermined configuration and providing multiple functionalities such as guiding light, resonantly reflecting light at multiple wavelengths, directing light to detectors, and focusing light on the detectors. The diffraction structure can be described as a digital planar hologram that comprises an optimized combination of overlaid virtual sub-gratings, each of which is resonant to a single wavelength of light. Each device includes at least one sensor, at least one light source, and at least one digital planar hologram in an optical waveguide. The device of the present invention allows detection of small amounts of analytes in gases and liquids or on solid surfaces and can be particularly advantageous for field analysis of environmental safety in multiple locations because of its miniature size and low cost.

The invention discloses an automatic power grid scheduling system of intelligent unattended substations, comprising a scheduling center of the automatic power grid scheduling system and a plurality of unattended substations; an SDH (Synchronous Digital Hierarchy) self-healing type optical fiber ring network is paved between the scheduling center of the automatic power grid scheduling system and each unattended substation and is uniformly scheduled by the automatic power grid scheduling system; each unattended substation utilizes a cooperative work mode of upper and lower computers; a video monitoring module of each substation is linked with a guard environmental safety module, so as to make up inherent defects that a detection region of a traditional safety system is limited and the like; meanwhile, the automatic power grid scheduling system is used for assisting a supervisor of the automatic power grid scheduling system in monitoring and controlling, and the secure and intelligent levels of the substations are improved; the video monitoring module, the guard environmental safety module and a substation system are integrated; when meeting illegal invasion events, the scheduling system has the capability of giving real-time responses, a power grid is recombined and emergency and optimal scheduling is supplied, so that the whole intelligent level and the service quality of the substations are improved.

The invention relates to a catalytic coolant used in a hot aerosol fire extinguishing device and a processing technique of the catalytic coolant. As to the coolant, heat absorption cooling components mainly include manganese carbonate or manganese oxalate, manganese phosphate, potassium manganate, metal carbonate of a family I, a family II and a transition family, basic carbonate, oxalate and the like; a metal oxide or a hydroxide are adopted as a catalyst, an oxidant and a reinforcing filling; stearate, graphite and the like are adopted as a processing aid; composite solution of alkalis silicate and a water soluble polymer is adopted as an adhesive; and film materials such as hydroxymethyl or hydroxyethyl cellulose are adopted as a surface coating agent. The processing technique includes the steps of mould pressing, squeezing, pelletizing, coating and forming. Compared with the prior art, the catalytic coolant not only has high intensity and good cooling effect, but also can reduce secondary damage of an extinguishing agent and eliminate the content of poisonous gases in an extinguishing agent product so as to improve the environmental safety of the extinguishing agent.

The invention belongs to the technical field of agricultural biology, and particularly discloses a Rhodococcus ruber XS-2 strain of which the collection number is CGMCC No.11562. The Rhodococcus ruber XS-2 strain has the function of degrading chemical pesticides. The invention also discloses a microbial preparation containing the Rhodococcus ruber and a preparation method thereof. The microbial preparation is compounded from the Rhodococcus ruber, Serratieae Bacillus subtilis and Brevibacillus brevis. The microbial preparation has the functions of restoring pesticide-polluted soil, preventing diseases and promoting growth, has high environmental safety, and has favorable development and application prospects.

The invention discloses a pseudomonas aeruginosa D10 which is preserved in China Typical Culture Preservation Center, and the preservation number is CCTCC NO: M 209104. A colony on a beef paste peptone culture medium appears brown, round, glossy and wet, and has trim edges; the diameter of the colony is 0.2-0.5 cm; and the thallus is in a short bar shape and does not have gemma. The invention also discloses a preparation method and applications of the pseudomonas aeruginosa D10. The pseudomonas aeruginosa D10 of the invention can inhibit corn northern and southern leaf blight, has strong antergic functions on corn northern leaf blight, corn southern leaf blight, corn curvalaria leaf spot, cotton verticillium wilt, wheat fusarium graminearum, banana colletotrichum toilette and banana fusarium wilt, has the advantages of wide bacteriostatic range, high prevention efficiency and favorable environmental safety, and has favorable prospects for development and applications.

The invention relates to an A/O denitrification sewage treatment process and a device capable of realizing sludge reduction. The process comprises the following steps: leading sewage in an anoxic zone to realize denitrification and then leading the treated sewage in an aeration zone to carry out aeration treatment; pumping part aerated sewage to the upper part of the anoxic zone to realize refluxing of mixed solution; leading residual sewage in a deposition zone to realize sludge-water separation through natural deposition; and pumping part deposited sludge to a sludge detention tank according to sludge refluxing ratio and then pumping the part deposited sludge to the upper part of the anoxic zone after 5.0 to 8.0 hours of detention to realize sludge refluxing. The A/O denitrification sewage treatment process and the device have the advantages that the process effectively combines sewage denitrification treatment and sludge reduction and has the advantages of both A/O denitrification process and OSA process, thereby realizing sludge reduction while ensuring effluent water quality; meanwhile, the process has simple flow and reduces material consumption and energy consumption; moreover, the process saves investment and does not cause potential problems in environmental safety; and the device has low investment and operation cost and convenient operation management.

The invention provides an earth pressure balance type shield long-distance lake-crossing construction technology, which is characterized by comprising the following technological processes that: (1) before the lake crossing, equipment such as a shield tunneling machine cutterhead, a cutter, a grouting system, a sealing system, a thrust jack and a monitoring system are carefully inspected; (2) an earth pressure value is reasonably set, and the volume of excavated earth is strictly controlled; (3) the thrust speed is reduced, and the total thrust is controlled; (4) a shield posture is regulated, and the number of deviation correcting times and the deviation correcting quantity are reduced; (5) the slurry mixing ratio is optimized, and the grouting quantity and the grouting pressure are reasonably set; (6) water leakageat the shield tail is strictly prevented; (7) the construction quality is enhanced, and the tunnel self-waterproof capability is improved; (8) earth body improvement is performed; (9) secondary grouting supplementation is performed; (10) anti-drag slurry is injected; (11) after the shield crosses the lake bottom, the lake bottom in the interval influence range is subjected to radial grouting for reinforcement; and (12) the communication smoothness of the tunnel and the ground is ensured. The excessive lake bottom sedimentation is avoided, and the influence of accidents such as spewing or large-area collapse on the engineering safety and the environment safety is prevented.

The invention provides a method for repairing polycyclic aromatic hydrocarbon contaminated soil by chemical oxidation. The method includes the steps: primarily crushing the polycyclic aromatic hydrocarbon contaminated soil; adding alkaline pretreating agents into the soil and performing pretreatment; adding activating agents and uniformly stirring the soil and the activating agents; adding persulfate oxidizing agents and uniformly stirring the soil and the persulfate oxidizing agents; finally, naturally curing the soil. By the aid of an alkaline pretreating agent, activating agent and oxidizing agent treatment process, polycyclic aromatic hydrocarbon is oxidized by highly reactive hydroxyl radicals generated by persulfate in an alkaline environment, the activating agents are added, the water solubility of the polycyclic aromatic hydrocarbon is effectively improved, the use efficiency of the persulfate is improved, repair treatment cost is reduced, the method can be widely applied to repairing of a high-concentration compound polycyclic aromatic hydrocarbon contaminated site, environmental pollution caused by the polycyclic aromatic hydrocarbon is reduced, and environmental safety is guaranteed.

The invention discloses a method for restoring and treating caesium and/or strontium polluted soil by using red spinach. The method is characterized by comprising the following steps of: planting the red spinach in the soil containing caesium and/or strontium pollutants, and harvesting the red spinach plant or moving the integral red spinach plant from the polluted soil when the red spinach plant grows to a flowering period or a mature period; and further, planting the red spinach of the next batch, moving the integral red spinach plant from the polluted soil when the red spinach plant grows to the flowering period or the mature period, and repeating the processes till the caesium and/or strontium content of the soil reaches the environmental safety standard. The method has the advantages of low energy consumption, low cost, low environmental perturbation, incapability of destroying the environmental soil structure and physicochemical property or causing secondary pollution and good soil treatment effect, can beautify the environment at the same time of treating the polluted soil, and permanently solves the pollution problem of the caesium and/or the strontium in the soil.

An oxime ester compound of specified structure. In particular, in a photopolymerizable composition comprising (a) black color material, (b) organic binder and (c) photopolymerization initiator, the oxime ester compound constitutes the component (c). The oxime ester compound can be used as a highly sensitive photopolymerization initiator. The photopolymerizable composition containing the oxime ester compound in the form of a thin film excels in sensitivity and resolving power while exhibiting high light shielding capability, so that it is capable of forming a resin black matrix (BM) of low cost but high quality. The color filter utilizing this resin BM excels in precision, flatness and durability, so that it is capable of enhancing the display quality of liquid crystal device. Moreover, the production process and color filter per se do not involve any hazardous substances, so that the danger to human body can be reduced and environmental safety can be enhanced. Application thereof can be made to usages in which no color material is used, such as photospacer and rib (liquid crystal divided-alignment protrusion).

The invention provides an application of antifungal Chinese herbal medicine as a wood mildew preventive and the wood mildew preventive. The Chinese herbal medicine comprises one of tangerine peel, folium artemisiae argyi, wrinkled gianthyssop herb, coptis root, capsicum annuum and blackberry lily. The application of the antifungal Chinese herbal medicine as the wood mildew preventive has pharmacological antibacterial, antimicrobial and antifungal effects, the Chinese herbal medicine is an environment-friendly material which is low in cost and has a simple preparation process, energy consumption can be reduced, the Chinese herbal medicine can be called an absolute green resource, and the environmental safety is high.

The invention relates to a heavy metal polluted soil plant repair technology, in particular to a method for repairing heavy metal polluted soil by using cadmium hyper-accumulation plant lantana camara. The lantana camara serving as an ornamental plant has strong tolerance and accumulation capacity on cadmium; the plant is planted in the cadmium polluted soil; when the concentration of the cadmium reaches 50mg/kg, the biomass of the ground part of the plant is not remarkably inhibited; and meanwhile, the roots absorb a large amount of cadmium from the soil, the cadmium is transferred to the ground part of the plant through the xylem and accumulated, and then the cadmium content of the ground part exceeds the critical content standard 100mg/kg of the cadmium hyper-accumulation plant. When the plant is mature, the plant is removed and centralized for proper treatment so as to fulfill the purpose of removing the excessive cadmium in the soil. By continuously planting the plant and repeating the steps, the plant continually extracts and absorbs the cadmium in the polluted soil till the cadmium content of the soil reaches the environmental safety standard. The polluted soil treatment method for repairing the polluted soil and beautifying the environment is green and safe.