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52results about How to "Avoid health risks" patented technology

A water treatment method combining flocculation, counter-current ozone air floatation and biofiltration in order and a device used in the method

A water treatment method combining flocculation, counter-current ozone air floatation and biofiltration in order and a device used in the method are disclosed. The device comprises a flocculation reaction zone, a counter-current ozone air floatation zone and a biofiltration zone which are connected in order. The flocculation reaction zone comprises two grades. One side of the first grade is connected to a water feeding pipe. A bottom outlet of the first grade is connected to an air floatation water distribution zone of the second grade. A water inlet pipe is disposed in the upper part of the counter-current ozone air floatation zone and connected to the air floatation water distribution zone. The top of the counter-current ozone air floatation zone is provided with a scum accumulating zone, the middle of the counter-current ozone air floatation zone is provided with a rectification filler, and the lower part of the counter-current ozone air floatation zone is provided with a plurality of air-dissolving water-releasing heads, a macroporous water collecting plate and a punched water collecting pipe. The water collecting pipe is communicated with a biofiltration water distribution zone. One side of the biofiltration zone is provided with the biofiltration water distribution zone, and the other side of the biofiltration zone is provided with a backwashing water collecting tank. The biofiltration zone is provided with an air-water backwashing system. The method and the device can effectively remove chroma, turbidness, microorganisms and various organic pollutants in water, and are suitable for drinking water treatment and sewage recovery and reutilization projects.
Owner:NORTH CHINA MUNICIPAL ENG DESIGN & RES INST

Risk evaluation method for petroleum hydrocarbons in industrial polluted site soil and underground water

The invention provides a risk evaluation method for petroleum hydrocarbons in industrial polluted site soil and underground water. The risk evaluation method comprises the following steps: step 1, collecting soil and underground water samples of a suspected polluted land parcel; 2, respectively carrying out pretreatment on the soil and underground water samples, and analyzing petroleum hydrocarboncomposition and reference content in the samples; 3, according to the purpose of the suspected polluted land parcel, determining the main use crowd of the suspected polluted land parcel and the exposure path of the petroleum hydrocarbons in contact with the crowd, wherein the exposure path is the process that the petroleum hydrocarbons pollutant in soil and underground water migrate to reach andenter a sensitive receptor; 4, performing toxicity evaluation according to the types of the petroleum hydrocarbon components; and step 5, according to the detection data of the petroleum hydrocarbons,calculating the non-carcinogenic hazard quotient of the petroleum hydrocarbon pollutants, carrying out risk characterization, and judging whether the risk is acceptable or not. By analyzing the composition and the content of the petroleum hydrocarbons, the treatment and restoration range is accurate, the pollutant type is accurate, the economic investment is reduced, and the environmental management cost is reduced.
Owner:SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP

Particle filter with ultrasound device

A filter device (1) according to figure 1 for suspended materials (2.3) having a particle size of 400 pm to <=500 microns in flowing fluids (2.2) having a volumetric flow rate of 10-2 mL / sec to 105 mL / sec, comprises a device (2) for reduction (>99%) in the specific particle count (N / Vt) of suspended materials (2.3.1) with particle sizes from 1 nm to 50 nm and of suspended materials (2.3.2) with MPPS particle sizes from >= 200 nm to <= 400 nm by means of an energy input from 0.25 W to 1 kW by means of ultrasound waves stabilized with electronic feedback loops and their harmonics (2.4.2) at a frequency of 1 kHz to 800 MHz and a power level of 40 to 250 dB in the fluids (2.2) or in bodies (2.6) attached thereto, so that fluids (2.2.1) with suspended materials (2.3.1) and / or with suspended materials (2.3.2) having a specific particle count (N / Vt) <= 20% and with suspended materials (2.3.3) having particle sizes of >=50 nm to <= 200 nm and / or with suspended materials (2.3.4) having particle sizes of >= 400 nm to >1000 nm having in each case a specific particle count (N / Vt) can be obtained to >= 80%, further comprising a flow pipe (2.1) having a wall (2.1.1) which, on its outer side (2.1.1.1), its inner side (2.1.1.2) and / or in the wall (2.1.1) has pairs of mutually opposite exciters (2.4.1) of longitudinal waves and their harmonics (2.4.2) and / or reflectors (2.4.3) opposite the exciters (2.4.1), through which pipe the fluids (2.2) and (2.2.1) can flow, a delivery device (2.5) for the fluids (2.2) and (2.2.1) and a connection (2.7) of the flow pipe (2.1) to a filter (3) of a smallest filterable particle size of 50 nm to 1000 nm, which keeps the specific particle counts (N / Vt) of the suspended materials (2.3.1), (2.3.2), (2.3.3) and (2.3.4) in the filtered fluids (2.2.2) to below the detectable limit or to 0.1%, where N = particle count, V = volume [m3], t = time [h], and the indicated percentages being in relation to the respective specific start counts (N / Vt) of the respective suspended materials = 100%; and filtration method, uses and equipment and plants with filter installations (1).
Owner:SMART MATERIAL PRINTING

Remote intelligent health analysis system and method based on Internet of Things

The invention particularly relates to a remote intelligent health analysis system and method based on the Internet of Things. The remote intelligent health analysis system based on the Internet of Things comprises a wearable sensing device, an environment data monitoring and weather forecast information acquisition device and a big data artificial intelligence operation platform, wherein the wearable sensing device and the environment data monitoring and weather forecast information acquisition device are connected to the big data artificial intelligence operation platform through an Internetof Things wireless communication module. The big data artificial intelligence operation platform is used for establishing an analysis model and predicting the morbidity probability according to weather changes. According to the remote intelligent health analysis system and method based on the Internet of Things, the morbidity probability of a user can be analyzed and predicted in real time, the characteristics of real-time performance, normalization and predictability are achieved, reference is provided for health care, the difficulty of health care of chronic patients and old people is lessened, guidance data can also be provided for work and life of the chronic patients and the old people, and health risks are reasonably avoided.
Owner:INSPUR TIANYUAN COMM INFORMATION SYST CO LTD

Antenna module for simulating terminal radiation and in-vehicle electromagnetic radiation test system and method

The invention provides an antenna module for simulating terminal radiation and an in-vehicle electromagnetic radiation test system and method. The antenna module comprises a substrate; and the first surface of the substrate is provided with a radiation microstrip, a feeder line which is connected with the radiation microstrip and inputs a radio frequency signal to the radiation microstrip, and a power adjusting unit which is connected in series with the feeder line. A grounding layer is arranged on the second surface of the substrate, the first surface and the second surface are opposite, andthe grounding layer covers all or part of the feeder lines on the second surface. The antenna module has good omnidirectivity. The radiation power of the radiation micro-strip can be flexibly adjustedthrough the power adjusting unit; the electromagnetic radiation condition of the terminal equipment in various working modes can be highly simulated, and the problem of poor consistency of test datacaused by different manufacturers, placement postures and test placement positions of the terminal equipment when the terminal equipment is directly used for radiation test is solved. The system performs a radiation test in the microwave darkroom, can avoid external signal interference, and guides a user to reasonably place a terminal.
Owner:CHINA AUTOMOTIVE ENG RES INST +1

Flavored hot pickled mustard tubers and preparation method thereof

The invention, which relates to the technical field of food processing, provides flavored hot pickled mustard tubers and a preparation method thereof. The flavored hot pickled mustard tubers is prepared by using the following raw materials: green vegetable heads, a soaking solution, phytic acid, sodium erythorbate, disodium stannous citrate, citric acid, lactic acid bacteria, sodium alginate, protease and table salt. According to the invention, the flavored hot pickled mustard tubers having crisp and tasty taste, moderate acidity, and unique flavor has extremely low nitrite content and is a nutritional and safe preserved hot pickled mustard tuber product; the sensory quality is improved, the nutritional value is increased, the shelf life is prolonged, so that the healthy consumption concept of modern consumers is met; the lactic acid bacteria are used for pickling the mustard tuber, so that the cost is saved, the food safety of the hot pickled mustard tuber is improved, the flavor of the hot pickled mustard tuber is improved, the quality and functionality of the hot pickled mustard tuber are enhanced. The preparation method is a novel safe and reliable process; production of harmful microorganisms in the preparation process of the hot pickled mustard tuber is reduced, the flavor of the hot pickled mustard tuber is ensured and the shelf life is prolonged.
Owner:宁波绿航农业科技有限公司

Jerusalem artichoke low-salt compound flavor pickle and preparation method thereof

The invention relates to a low-salt compound flavored pickle of jerusalem artichoke and a preparation method of the low-salt compound flavored pickle, belonging to the technical field of food processing. The method comprises the following steps: with certain quality of jerusalem artichoke, Chinese cabbage and cowpea as main raw materials, preparing a pickling liquid from water, salt, white sugar, chilli, pricklyash peels and ginger slices; adding a brittleness-keeping agent prepared from CaCl2, gelatin and pectinase, inoculating a leavening agent prepared from lactobacillus pentosus and lactobacillus plantarum, and producing the low-salt compound flavored pickle of the jerusalem artichoke; and packing, sterilizing, cooling to prepare the low-salt compound flavored pickle. According to the method, rapid production of the low-salt and high-quality flavored pickle of the jerusalem artichoke is realized; peeling is not needed; a color retention agent or a preservative is not added; the process is simple; the cost is low; the bioactive substances such as synanthrin and fructo-oligosaccharide are preserved to the maximal extent; meanwhile, new functional factors such as functional terpene compounds are generated by fermentation; the low-salt compound flavored pickle is bright in color and luster, sour, crisp and refreshing, and unique in flavor, and has the healthcare efficacies of appetizing, helping digestion, improving digestion, preventing decayed tooth, preventing obesity, lowering blood glucose and improving the immunity.
Owner:JIANGSU ACAD OF AGRI SCI

A photocatalytic device based on nano-magnetic titanium dioxide catalyst

The invention provides a photocatalysis device based on a nano-grade magnetic titanium dioxide catalyst. The device comprises a main body, a water inlet unit, a nano-grade magnetic titanium dioxide catalytic oxidation unit, a separation unit, and a water outlet unit. The water inlet unit is arranged in the upper part of the main body. The water inlet unit comprises a water inlet pipe and a titanium replenishing port, an iron powder replenishing port and a carbon powder replenishing powder communicating with the water inlet pipe. The nano-grade magnetic titanium dioxide catalytic oxidation unit is arranged at the middle of the main body, and adopts a complete mixing mode. The nano-grade magnetic titanium dioxide catalytic oxidation unit is provided with an air agitation device. The separation unit is arranged in a lower part of the main body, and comprises a separation device, a filtering membrane arranged on the separation device and a pulse air purge device arranged below the filtering membrane. The water outlet unit is directly connected with the separation unit. The novel photocatalysis device has the characteristics of compact structure, convenient application, small land occupation, good treatment effect, and the like. The device has good popularization and utilization prospects.
Owner:HOHAI UNIV

Remote gas path gating device

The invention discloses a remote gas path gating device which comprises a remote control device, a drive device and an operation mechanism. The remote control device is used for remotely controlling the drive device, generating an operation instruction and sending the operation instruction to the drive device. The drive device receives the operation instruction sent by the remote control device, processes the operation instruction into drive voltage and transmits the drive voltage to the operation mechanism. The operation mechanism receives the drive voltage transmitted by the drive device, and operates under the control of the drive voltage. The operation mechanism is detachably connected with the outside of a device needing gas path gating. The remote control device is used for remotely controlling opening and closing of a gas path of the operation mechanism, and the remote gas path gating device has the advantages that a gate gas path is controlled remotely and gas in other gas paths is not polluted. When the remote gas path gating device is used, operators can operate outside a low-pressure bin, the drive device and the operation mechanism are arranged outside the low-pressure bin, and risks, caused due to the fact that people enter a low-pressure environment, of body health are avoided.
Owner:AVIATION MEDICINE INST AIR FORCE PLA
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