136results about How to "Ensure environmental safety" patented technology

The invention relates to a treatment method of sludge generated by urban sewage treatment plant and industrial sludge and discloses a sludge treatment method based on hydrothermal carbonization. The sludge treatment method comprises four steps: sludge preheating treatment, hydrothermal carbonization, waste heat recovery and dehydration desiccation. By adopting the sludge treatment method, as the sludge is converted to hydrothermal carbon by adopting a hydrothermal carbonization technology, pathogenic microorganisms in the sludge are completely killed, most heavy metal pollutants in the sludge are dissolved out, and organic toxic substances in the sludge are effectively decomposed, so that the energy recovery utilization rate is high, and the sludge treatment method is clean, environment-friendly, rapid and effective and has high product additional values.

The invention discloses a method for preparing non-fired ceramsite from electroplating sludge. The method comprises the following raw materials: 5 to 15% of Portland cement, 10 to 70% of fly ash, 5 to 40% of ground fine mineral waste residue, 10 to 20% of ground fine steel slag, 0 to 3% of quicklime, 0.3 to 1% of ferrous sulfate, 0 to 3% of gypsum powder, 2 to 10% of electroplating sludge (on a dry basis) and 0.1 to 0.3% of a density adjusting plasticizer. The method comprises the following steps: fully mixing the above raw materials except electroplating sludge in advance; then adding original electroplating sludge and water and carrying out rolling and uniform mixing under stirring; and then carrying out granulation and natural maintenance. The non-fired ceramsite prepared in the invention has bulk density, strength and water absorption rate meeting requirements prescribed in Lightweight Aggregate and Testing Methods thereof GB/T17431-2010, and the leaching concentrations of heavy metals like chromium are lower than limited values of V-class surface water prescribed in Environmental Quality Standards for Surface Water GB3838-2002; and the method can realize safe disposal and recycling of electroplating sludge.

The invention discloses a sandbox shelling method and system based on an Android virtual machine. The method comprises the steps that the Android virtual machine is started, the class loader of a system is replaced with a predefined class loader to load a custom Android virtual machine code package used for shelling of a sandbox, and the run-time environment capable of executing Android shelling codes is obtained; the package name and the main Acitivity name of a to-be-shelled target application are read in the virtual machine, and the context and resource accessing interface of the target application are constructed according to the package name and the main Acitivity name; the resource accessing interface of the target application is constructed to simulate the normal execution procedureof the target application, the context matching with the target application is transmitted to the start parameters of the target application, and program code decryption is conducted on the target application in the sandbox to obtain the program code of the target application. According to the method, the execution environment does not need to provide the highest access authorization, the environmental safety of a device of a user is ensured, and the method is simple to use and high in execution efficiency.

The invention belongs to the technical field of mesophase asphalt precursor synthesis methods, and particularly relates to a preparing method of high-purity arene oligomerization asphalt. The preparing method mainly solves the problems that according to an existing preparing method of the high-purity arene oligomeriation asphalt, reaction conditions are rigid, corrosion for equipment is strong, the cost is high and purification is difficult. The technical scheme of the preparing method of the high-purity arene oligomerization asphalt includes that arene chemical compounds are guided into a first stage reactor, catalysts are guided into a catalyst feeding system, after uniform mixing, the catalysts are input into the first stage reactor through the feeding system, after uniform mixing and reaction for 1-50 hours, materials in the first stage reactor are guided into a second stage reactor to react, materials in the second stage reactor are conveyed to a corrosion-resistant film evaporator, the residual catalysts are eliminated, and the arene oligomerization asphalt is formed. The preparing method of the high-purity arene oligomerization asphalt has the advantages of good reaction controllability, low-temperature efficient reaction, catalyst recycling, and good asphalt performance, and the like.

The invention discloses a seepage prevention method and structure for a waste percolate collecting pool. According to the method, an HDPE seepage prevention film (4) and geotechnical cloth (3) are combined, and the geotechnical cloth (3) is laid between the HDPE seepage prevention film (4) and the inner wall of the pool (1); at least one anchoring press strip (5) surrounds the inner side wall of the pool (1) by one circle, and the HDPE seepage prevention film (4) and the geotechnical cloth (3) are pressed on the inner side wall of the pool (1) tightly. The geotechnical cloth (3) and the HDPE seepage prevention film (4) are adopted to form a composite seepage prevention system, the weight of the HDPE film and the weight of the geotechnical cloth are divided into two parts through the anchoring press strip, and the too large anchoring force born by an anchoring groove and the too large tensile stress of the HDPE film are reduced.

A high-effect energy recycler in airflow non-contact type comprises thermal siphon (1), fins (2), baffle plate (3), outer frame (4), base (5), top rod (6) and driver (7). The thermal siphon has working substance with low boiling point; several thermal siphons are sheathed with several fins to form heat exchange corn separated into two parts via baffle plate and connected to outer frame to form heat exchanger. Cold and hot airflows individually passes two parts of heat exchange corn, via the heat transmission of thermal siphons and fins to exchange heat. The base supports heat exchanger, the top rod is connected to the driver to change the working state of heat exchanger, to adjust capacity and change working state. The invention can avoid pollution of working airflow, with high efficiency and automatic state adjustment, low start temperature difference, low cost and high reliability.

The invention relates to an indoor anti-explosion cabinet which comprises an outer cabinet body, a middle cabinet body, an inner cabinet body and an anti-explosion liner, wherein the anti-explosion liner is arranged in the inner cabinet body, the inner cabinet body is arranged in the middle cabinet body, the middle cabinet body is arranged in the outer cabinet body, and a cover body is arranged at the upper end of the inner cabinet body. The indoor anti-explosion cabinet has the advantages that most of explosive shock waves are damped and explosion fragments are blocked effectively; due to the adoption of non-metal materials, the risk of shrapnel generation is avoided and safety performance is high; the cabinet is light and can be dragged easily, and the mass of the cabinet is only half that of a metal anti-explosion container on the premise that the protection equivalent weights are equal; the design is ingenious, the inner cabinet body, the middle cabinet body and the outer cabinet body can be assembled and disassembled fast in a pushing and pulling mode, and all-dimensional protection is achieved; the cabinet is well hidden to perform the anti-explosion function and is disguised to be office furniture after being decorated.

The invention provides a gas leakage monitoring system and method for a gas field station. The system comprises field monitoring equipment used for correspondingly acquiring combustible gas concentration data and video data of monitoring positions through laser combustible gas detectors and cameras, analyzing the combustible gas concentration data to obtain concentration analysis results and carrying out target analysis on the video data to obtain target recognition results, a server used for receiving the combustible gas concentration data, the video data, the concentration analysis results and the target recognition results sent by the field monitoring equipment, and a background monitoring terminal used for receiving and storing the combustible gas concentration data, the video data, the concentration analysis results and the target recognition results, and giving an alarm when it is judged that gas leakage occurs in the monitoring positions according to the concentration analysis results and the target recognition results. The gas leakage monitoring system can conveniently and accurately perform remote monitoring on the gas leakage of the gas field station.

The invention discloses an environment-friendly sewage aerating and press filtering treatment device which comprises a water inlet pipe, a treating box, an aerating device, an air bag, a heater, a press filtering box, filtering plates, a spring, a water outlet pipe, a gas collecting tank, an impurity exhausting pipe and an ionizing rod, wherein a lateral wall of the top end of the treating box isconnected with the water inlet pipe, an agentia adding pipe is arranged at the top end of the treating box, the treating box is communicated with the aerating device, a plurality of groups of defoaming spikes are arranged on an inner wall of the treating box, the ionizing rod is arranged in the treating box, the heater is arranged on the inner wall of the treating box, a timer is arranged on a lateral wall of the treating box, the top end of the treating box is communicated with the gas collecting tank through a gas pipe, an inclined guiding plate is arranged at the bottom of the treating box,the bottommost end of the inclined guiding plate is communicated with the bottom of the press filtering box through an infusion pipe, a plurality of groups of the filtering plates are arranged in thepress filtering box, the water outlet pipe is arranged at the top end of the press filtering box, and the impurity exhausting pipe is arranged at the bottom end of the press filtering box. The environment-friendly sewage aerating and press filtering treatment device disclosed by the invention can improve a sewage treating efficiency and a sewage treating effect and improve environment-friendly safety and has the advantages of simple structure, low cost, convenience in use and favorability for popularization.

The invention discloses a method for determining residual quantity of fosetyl-aluminium in an environmental sample, which comprises the following steps that (1) after a soil sample is extracted with a 10% to 50% methanol aqueous solution, purified with a C18 solid phase extraction column and diluted with ultrapure water, a high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) system is adopted for separation and detection; and (2) after an environmental water sample is purified with the C18 solid phase extraction column and diluted with the ultrapure water, the HPLC-MS/MS system is adopted for separation and detection. The adopted chromatographic column is a chromatographic column which uses carbon octadecyl bonded silica gel as a filling agent, a mobile phase is acetonitrile-water, and the fosetyl-aluminium is separated and detected through gradient elution and electro spray in a negative ion scanning mode. Through systemic comparative study, the invention establishes the method for determining the residual quantity of the fosetyl-aluminium in the environmental sample, and the method has the technical characteristics of good separating effect, accurate determination, high sensitivity, strong specificity, simpleness, convenience and rapidity in analysis and the like.

The invention discloses a NB-IoT based grid information physical fusion risk monitoring system and method belonging to the field of grid information physical fusion system risk monitoring technology.The system is composed of a grid information physical fusion system environment monitoring module, a grid information physical fusion system error inductive module, a grid information physical fusionsystem state monitoring module, a NB-IoT communication base station, a data service platform and a user application terminal. The system realizes the risk monitoring application of the grid information physical fusion system based on narrowband Internet of Things by utilizing the advantages of narrowband Internet of Things technology and combining with rich sensor devices. By utilizing state conditions of the grid information physical fusion system obtained by the grid information physical fusion system state monitoring module, the risk monitoring method can timely discover the illegal movements of the grid information physical fusion system, over-limit pressure and various other abnormal conditions, ensures the security of the grid information physical fusion system, and has wide application value and a practical significance.

The invention discloses a yhree-dimensional mobile monitoring system for a sea area hydrate exploitation environment, which comprises a mobile monitoring platform and a control unit thereof. The mobile monitoring platform comprises a main cabin body, and an environmental parameter monitoring unit, a topographic parameter monitoring unit, a cruise monitoring unit and a sampling unit which are arranged on the main cabin body and used for monitoring the surrounding environment and topographic changes of the drilling platform. An anchor system subsurface buoy working unit is further arranged behind the main cabin body, the anchor system subsurface buoy working unit is used for monitoring environmental parameters such as methane content and turbidity abnormity, and the anchor system subsurfacebuoy working unit stays at any height for monitoring under rotation of the winding vehicle. According to the system, various environment and other parameters are monitored in an omnibearing and three-dimensional mode in the circumferential direction and the vertical direction with each production well as the circle center, the situation that various cables are laid on the seabed or a workstation is established is avoided, the environmental effect of hydrate exploitation activities is comprehensively and effectively evaluated, potential environmental disasters are early warned in advance, and potential safety hazards are avoided. and a scientific evaluation system in the aspect of environment is provided for commercialized hydrate exploitation.

The invention discloses an ATM program updating safety protection method and system. The method comprises the following steps of: dynamically sensing whether an updating program is operated in an ATMterminal or not, and if the sensing result is positive, stopping the operation of the updating program and carrying out encryption and backup on all the pieces of information in the ATM terminal; after the encryption and backup are finished, releasing the operation of the updating program; creating a bait folder, and if a behavior for modifying a bait file by the updating program is sensed, judging that the updating program is malicious and stopping the operation of the updating program; if the behavior for modifying a bait file by the updating program is not sensed, automatically testing theupdated program and judging whether the updating program is malicious or not according to the test result; aiming at the condition that the updating program is malicious, deleting all the pieces of information created by the updating program and recovering the data which undergoes encryption and backup; and the updating program is not malicious, considering that the updating program is safe. The method and system are capable of effectively judging whether updating programs have potential threats or not.

The invention puts forward a cross digital signing method and a cross digital signing system for application software under a domestic operating system. The method comprises the following steps: a software developer copies to-be-released software to a special signing device; the special signing device signs the to-be-released software; the special signing device releases signing software and a signing certificate generated to a special management device; and the special management device signs the signing software for the second time in a cross manner, generates cross signing software and a cross signing certificate, and releases the cross signing software and the cross signing certificate to an application store. The invention further puts forward a corresponding cross digital signing system. Through cross signing using a special signing device, the reliability of to-be-released software is strengthened, and adverse consequences caused by illegal certificate misappropriation are prevented. Moreover, software developer identity management is realized.

The invention discloses a flexible transparent electrode and a preparation method thereof and electronic skin. The flexible transparent electrode comprises a flexible substrate, wherein a metal conductive material layer is bonded to the surface of the flexible substrate, the metal conductive material layer is in a plant vein-shaped pattern, and a metal conductive material is a silver nanowire. The flexible transparent electrode has excellent conductivity and light transmittance performance, and also has excellent flexibility and mechanical stability. According to the preparation method of the flexible transparent electrode, the stable performance of the prepared flexible transparent electrode and the environmental protection and safety in the preparation process are ensured; the preparation technology is simple and high in speed; the preparation method only needs to be carried out at a room temperature; and abundant leaf vein templates in the natural world are utilized, so that the cost is low and the flexible transparent electrode is suitable for green and low-cost mass production. The electronic skin containing the flexible transparent electrode disclosed by the invention is sensitive in induction, and the bionic effect is excellent due to high transparency of the electrode.

A nest polymerase chain reaction (PCR) detecting method of a transgenic crop cauliflower mosaic virus relates to the field of molecular biology. The method designs two specificity outer primers and adopts a CaMV35S promoter published by an announcement NO. 953-6-2007 of a ministry of agriculture to detect a primer serving as an inner primer according to a conserved sequence of a cauliflower mosaic virus CaMV35S promoter, and the group of primers can detect the cauliflower mosaic virus CaMV35S promoter in different transgenic crops and has the characteristic of a broad spectrum. The detecting method has the advantages of being efficient, sensitive, accurate and the like, can avoid a 'false negative' result, and can effectively solve the technical problem of detecting transgenic crops. The nest PCR detecting method can provide technical support for agricultural transgenic organism safety management directly, can conduct effective monitoring on research, production and sales of transgenic crop products, and has important meaning on guaranteeing health of people, environment safety and biodiversity.

The invention discloses a treatment method for acid mine water of a closed coal mine. The treatment method is suitable for acid mine water treatment of abandoned mines in inclined mine exploitation. The treatment method comprises the following steps: firstly, digging an underground tunnel at a shaft head before a coal mine is closed, wherein the underground tunnel is parallel to an original roadway; digging a connection channel at the top end of the underground tunnel and the original roadway; after the coal mine is closed, removing pollutants such as H<+>, suspended matters, iron, manganese and sulfate radical from the acidic mine water in the abandoned original roadway at the shaft head and the dug roadway; putting the treated effluent into an artificial wetland system, and further performing neutralization, adsorption, filtration, ion exchange, plant absorption and the like in the wetland system to remove the remaining H<+>, iron, manganese and other pollutants from the water, and discharging or reusing the effluent treated by the wetland. The method is simple to operate; by use of inexpensive materials such as limestone and closing of the original roadway of the coal mine, theland is saved; the pollution of the acidic mine water of the closed coal mine can be effectively solved; in addition, the treatment and maintenance cost is reduced.

The invention provides an intelligent inspection robot for environmental parameters, including a central processing unit and external devices, the input ends of the central processing unit are respectively connected to the output ends of a temperature sensor, a humidity sensor, a natural gas detector, a smoke sensor, a power supply and a camera connected, the central processing unit is connected with RAM storage, MRAM storage and database respectively, the output terminals of the central processing unit are respectively connected with the input terminals of the ultrasonic echolocation unit, the driving mechanism, the braking mechanism and the alarm, and the central processing unit The output end of the processor is connected with the input end of the wireless transmitter, and the output end of the wireless transmitter is connected with the external device through the LTE network; the present invention can understand the situation in the home in real time through the external device and the central processing unit, so as to monitor the situation in the home Function, high degree of intelligence, multi-function, high practicability and popularization.

The invention provides a nanometer graphene purification system for treating medical sewage containing novel coronaviruses. The nanometer graphene purification system comprises a medical sewage collecting and conveying device, at least two stages of sedimentation tanks, a filtering device, at least three stages of graphene sterilization devices, a multiple purification tank, a photocatalytic degradation device, an advanced novel coronavirus purification device and at least three stages of graphene water purification devices. The invention further provides a process for applying the nanometer graphene purification system for treating the medical sewage containing the novel coronaviruses. According to the nanometer graphene purification system and process for treating medical sewage containing the novel coronaviruses in the invention, the novel coronaviruses are deeply killed by utilizing instantaneous high temperature, high pressure and high energy release of micro-nano bubbles; the multi-stage graphene water purification devices and the graphene sterilization devices are cooperatively utilized to deeply kill, block or purify various pathogenic bacteria, parasites and hundreds of pollutants in the medical sewage, so up-to-standard discharge of the medical sewage in infectious disease hospitals can be ensured, and the life safety, the environmental safety and the life health of the masses are further ensured.

The invention provides a system and method for adjusting the temperature of a fresh air machine room. The system comprises a machine room, a refrigerating system, an outdoor sensor, an indoor sensor and an IDC cloud control system. The machine room is provided with the fresh air system. The IDC cloud control system is connected with all components. The outdoor sensor collects outdoor detection data, and the indoor sensor collects indoor detection data. The IDC cloud control system calculates an outdoor fuzzy integral value EVAout according to the outdoor detection data and the outdoor relevantfuzzy measure Mu (Ai), wherein the outdoor relevant fuzzy measure Mu (Ai) is obtained through historical data training. If EVAout is greater than or equal to an outdoor fuzzy integral threshold valueEVAthre, it is decided to introduce fresh air through the fresh air system according to the judgment strategy; and otherwise, the fresh air is not introduced, and the refrigerating system is started.An indoor fuzzy integral value EVAin is calculated according to the indoor detection data and the indoor relevant fuzzy measure Mu (Ai); if EVAin is greater than or equal to an indoor fuzzy integralthreshold value EVA'thre, it is decided to continuously introduce the fresh air according to the judgment strategy; and otherwise, the fresh air is not introduced, and the refrigerating system is started.

The invention discloses a method for detecting the drift treatment of a target gene. The method comprises the steps of: collecting liquids which possibly contain an exogenous gene such as transgenic cell culture solution, nuclear transplantation operation fluid, embryo culture solution and the like, performing high-pressure treatment, and then concentrating; and designing a primer for a gene sequence of the exogenous gene, specifically amplifying DNA fragments of the exogenous gene through a polymerase chain reaction (PCR) technology, and judging whether the exogenous gene still exists in the liquid produced during the screening of transgenic cells and the production and culturing of embryos and subjected to the treatment. The method for detecting the drift treatment of the target gene can completely avoid the drift of exogenous genes, and ensure the environmental safety during the production of transgenic animals. The method is applicable to the detection of genetic drift during the production of transgenic cows and goats derived from human defensin-3 genes.