104results about How to "Solve the purification problem" patented technology

The invention discloses an efficient flocculent precipitate purification method for polymetallic ore benefication wastewater. Specifically, the purification method comprises the steps of: neutralizing and regulating the pH value of benefication wastewater by adopting a little amount of alkaline materials; then sequentially feeding a proper amount of proper suitable flocculant for efficient flocculation and a little amount of efficient coagulant aids for fast precipitation; separating sludge from water through action of a partition wall, wherein the treated wastewater achieves primary standardof national Integrated wastewater discharge standard (GB8978-1996); through SV30 evaluation; settling for 5minutes to achieve 45-55mL of supernatant by volume; and settling for 15 minutes to achieve 70-80mL of supernatant by volume. The purification method can fully utilize the traditional benefication wastewater lime and sedimentation process, is simple in procedure, and can simultaneously remove suspended particulate matters, organic matters and heavy metal ions in wastewater, is high in flocculation efficiency and fast in sedimentation speed, and can better solve the purification problem of the low-concentration and high-tubidity polymetallic ore benefication wastewater of multiple heavy metals.

The present invention discloses a compound purifying method and device of cultivation wastewater which is accomplished by the following processes. The deposited cultivation wastewater after filter seeps through deadwood to carry through anaerobic and denitrogenating treatment and then seeps through bamboo charcoal and limestone to carry through aerobic aeration treatment; after internal electrolysis treatment and absorption treatment, the wastewater purifying is accomplished and the wastewater is discharged. The device system has no machinery and is simple and convenient to maintenance. Workers after simple training can self operate and maintain. The present invention aims at the characteristic of high COD, total nitrogen, total phosphorus and solid suspended substances content of cultivation wastewater. The present invention has designed a distributed treatment flow and has the advantages of simple device, easy acquisition of material and easy maintenance. The present invention can solve the purifying problem of cultivation wastewater in culturing farms with small or medium scale.

The invention discloses a method for qualitative and quantitative determination of sugar alcohols in foods by an ion chromatograph-mass spectrometer. The method is characterized in that a sample subjected to extraction purification pre-treatment is detected by the ion chromatograph-mass spectrometer; ion chromatography conditions comprise that 90mmoL/L of a sodium hydroxide solution as a separation column eluting solution is used for isocratic elution at a flow rate of 0.50mL/min; a suppressed conductance method comprising a suppressor electric current of 139mA, a feeding amount of 25.0 microliters and a suppressor water source constant flow pump flow rate of 1.0mL/min is adopted; mass spectrometry conditions comprise that an ionization mode APCI- is adopted and a temperature of fainting during acupuncture treatment is 450 DEG C; atomized gas is nitrogen and has purity of 99.9% and pressure of 55psi; and quantitative analysis adopts an external standard quantitative method. The method realizes on-line qualitative and quantitative detection of sugar alcohols in foods, utilizes a self-made SPE column and the ion chromatograph-mass spectrometer to carry out detection, and realizes simple and fast qualitative and quantitative detection of six sugar alcohols in foods.

The invention relates to a new self-purifying food fryer capability of self-purification of frying oil, which comprises a pan cavity with oil-water unification, and a filter tank capability of decolorization purifying. The invention has the advantage that the oil can be filtrated and decolorization purified intermittently or simultaneously when fried food is produced, so as to reach the aim of effectively eliminating pollution, greatly decreasing the oil consumption and reducing the environmental pollution.

The invention discloses an automobile exhaust purifying agent and a preparation method thereof. The method comprises the following steps: mixing 1-1.75% isopropanol with 1-5% propylene glycol so as to obtain a mixture I; mixing the mixture I with 1-2% hydrogen peroxide, 2-3% ethanol and methanol; finally performing split charging and packing, checking out and warehousing. By adopting the automobile exhaust purifying agent, the exhaust problem is solved basically, part of a chemical preparation plays a decomposition role, and the rest chemical preparation decomposes and utilizes organic matters capable of causing carbon deposition by using a chemical mode. The problem of exhaust purification is solved by fully using the chemical mode, and the two modes are mutually coordinated, so that the automobile exhaust purifying agent is rapid and lasting in effect, and has a broad market prospect for severe exhaust emission in China.

The invention discloses a method for flocculating settling of scheelite beneficiation wastewater. The method comprises the steps that a destabilizing agent lime milk is added into the scheelite beneficiation wastewater to obtain destabilized wastewater, then a pH regulator is added to keep the pH of the wastewater at 9-10, a proper quantity of polymeric flocculant chitosan is added, primary sedimentation is performed under the pH of 9-10, then the pH regulator is added to reduce the pH to 4-5, sedimentation continues to be carried out, and then purified water is obtained. According to the method, lime milk is first utilized for destabilizing suspended matter in the beneficiation wastewater, and then the polymeric agent chitosan is utilized for a stress reaction to pH change. Flocculation and dispersion of the polymeric agent are caused by changing the pH, so that the separation effect of coarse particle flocculating constituents and water is enhanced, the flocculation efficiency is high, the settling velocity is high, the beneficiation wastewater can be well purified, and standard discharge of the wastewater is realized.

The invention discloses an air purifying method applied to an air purifying system containing two filtering molds. The method comprises steps of acquiring current indoor air quality information including at least one air indicator parameter, determining a relationship between the current indoor air quality information and a first set threshold value, executing purifying operation of an outdoor filtering mold when the current indoor air quality information exceeds the first threshold value, determining a relationship between the current indoor air quality information and a second threshold value, and executing purifying operation of an indoor filtering mold when the current indoor air quality information exceeds the second threshold value. Indoor pollutants are purified via a continuous circulating method; the two filtering molds are controlled by a control module (or a component) to coordinately work, so indoor air purification can be fully achieved.

The invention discloses an elastic needle wire packing for air purification and an engineering use method thereof, and relates to mass transfer purification products and technologies in the field of environment friendliness. A plastic elastic wire is alternately stranded on a central rope, elastic needle wire packing monomers in uniform radiation is prepared, and one end or two ends of the packing monomer center rope are fixedly hung on towers, structures or hanging rods in a frame, so that elastic wires are stereoscopically and uniformly spread and filled in an effective area like a forest, the packing is wetted or a water flow is formed by virtue of spray of a spraying device, air blows to the packing forest from any direction, air and liquid can intensively collide and cut on the packing and fully contact to realize high-efficiency mass transfer, particulate matters are washed, soluble matters are absorbed by the liquid, biodegradable organics are dissolved in the absorbing liquid and form biological films on the packing to be degraded, and air is purified. The invention provides widened application of elastic space packing for wastewater treatment, which is just like that a medicine sildenafil for treating cardiovascular diseases is invented by accident to be used for treating male erectil dysfunction.

The invention belongs to the technical field of air purification, and discloses a flue gas purification device for rubber processing. The flue gas purification device comprises a purification cabinet, wherein a gas cylinder is arranged in the purification cabinet, the top of the gas cylinder communicates with a gas injection pipe, a dry lime layer is arranged in the gas cylinder, a dust removal cloth bag in a protection cylinder 8 is clamped to the bottom of the gas cylinder through a threaded ring, one side of the protection cylinder communicates with a gas conveying pipe, a water tank is arranged on one side of the gas cylinder, and a biological absorption box is arranged on the other side of the water tank. By arranging the purification cabinet, a high-energy ultraviolet sterilization lamp, an activated carbon adsorption chamber and the like, the purpose of good air purification effect is achieved; when flue gas dust is injected into the purification cabinet through the gas injection pipe, it is guaranteed that exhausted gas is clean and harmless through treatment of aerobic activated sludge, ultraviolet rays and activated carbon; and meanwhile, cyclic treatment of the device is realized through a second flow guide pipe, a third flow guide pipe and an electric three-way valve, so reactants in the device are repeatedly utilized, and the working efficiency of the device is improved.

The invention discloses a method for purifying water by building an ecological floating island with lake silt. The method comprises the following steps: (1) silt in a lake is fetched, and is subjected to drying, molding, glaze sealing and surface roughening treatment in a nearby factory; and the treated material is fired into non-absorbent floating particles with specific weight of 400-600kg*m<-3> and particle size of 5-20mm; (2) the ecological floating island is constructed with the floating particles; a floating planting platform is constructed in a layered way, wherein the floating planting platform is formed from top to bottom by connecting planting plain soil, a grass mat layer, a grid and the floating particles wrapped by a net; the floating particles are wrapped with an anti-aging high-strength plastic net or metal net; during an early stage of the construction of the floating planting platform, the platform is sprayed with microbes, such that oriented inoculation cultivation is carried out; and (3) plants are planted on the ecological floating island. With the method, silt recycling and the purification of polluted water are realized. Polluted water purification problems such as lake eutrophication can be solved, overall water green area can be increased, wetland can be restored, and the climate can be better regulated.

The invention relates to air purifying equipment and belongs to the technical field of air purification. The air purifying equipment comprises a shell, a draught fan, a filter element, an outdoor air inlet valve and an indoor air inlet valve. The outdoor air inlet valve and the indoor air inlet valve are oppositely installed on the shell and share the same control shaft. An indoor air outlet is formed in the shell. The draught fan and the filter element are installed in the shell. An air duct is formed by the indoor air outlet, the outdoor air inlet valve and the indoor air inlet valve. The draught fan and the filter element are located in the positions, on the downstream portion of the outdoor air inlet valve and on the downstream portion of the indoor air inlet valve, in the air duct. When the control shaft rotates to a first position, the outdoor air inlet valve is in an opened state, the indoor air inlet valve is in a closed state; and when the control shaft rotates to a second position, the outdoor air inlet valve is in a closed state, and the indoor air inlet valve is located in an opened state. By the adoption of the air purifying equipment, the installation space of the equipment in a room can be saved.

The invention discloses a sanitizable agent signature method in a standard model. According to the utility model, agent authorization based on identity is performed first. Agent signature is signed after the agent authorization. Then, the agent signature is sanitized. A receiver receives and verifies the sanitized signature. The sanitized signature is accepted if validation passes or rejected if validation fails. The invention provides the sanitizable agent signature method in the standard model and based on CDH (Computational Diffie Hellman) problems and can guarantee the reliability and safety of the agent signature.

The invention aims at providing a preparation method of a ruthenium catalyst for removing trace H2 from high-concentration CO gas. The catalyst is prepared by an immersion method, and takes ruthenium as an active ingredient and aluminum oxide as a carrier. The catalyst prepared by the method has the advantages that the catalyst preparation method is simple, the active ingredient is uniformly loaded, and the obtained catalyst has excellent performance; and by using the catalyst, CO and H2 in industrial CO gas carry out methanation reaction, and H2 content in the reaction tail gas is lower than 1000ppm, so that the purification problem of CO gas in oxo synthesis industry is effectively solved.

The invention provides a method for treating eutrophication substances in sewage through artemia culture. The method includes the following steps that S1, a treating pond is built, and salt lake brine is injected into the treating pond; S2, to-be-treated sewage is injected into the treating pond in a continuous or semi-continuous mode, and the net evaporation speed of a water body in the treating pond and the injection speed of the to-be-treated sewage are kept same; S3, the salinity of the water body in the treating pond is adjusted and kept 6 baume to 14 baume, nutrient substances in sewage are used, microalgae, microorganisms and the like are cultured to serve as baits of artemia, artemia in the water body in the treating pond is cultured, and nitrogen and phosphorus eutrophication substances are removed in sewage from water by catching artemia. By means of the method, it is achieved that the eutrophication substances in sewage are efficiently and continuously purified, zero discharging of the eutrophication substances is achieved, artemia produced in the water purifying process is high-quality baits for culturing animals and raw materials in cooperation with feed, and objective economic benefits can be created.

The invention discloses a power generation system of an urban garbage pyrolysis and gasification coupled coal-fired power plant, wherein the system comprises a boiler; the boiler drives an electric generator to generate electricity by a steam turbine; the system is characterized by also including a garbage low-temperature pyrolysis system and a garbage drying system. The invention provides the power generation system of the urban garbage pyrolysis and gasification coupled coal-fired power plant. The low-temperature pyrolysis system is used for pyrolysis of the urban living garbage at low temperature, HCl in the urban living garbage can be volatilized and removed, the generation amount of dioxin is reduced from the source, the high temperature corrosion problem of HCl generated in the process of urban living garbage incineration to a coal-fired boiler heated surface is solved, and the safety of heated surfaces of large coal-fired units is ensured.

The invention provides industrial wastewater treatment equipment capable of preventing blockage, and relates to the technical field of industry. The industrial wastewater treatment equipment capable of preventing blockage comprises a wastewater treatment equipment casing, wherein a water inlet pipe is fixedly communicated with the upper part of the inner left wall of the wastewater treatment equipment casing, a chemical inlet pipe is fixedly communicated with the upper part of the inner right wall of the wastewater treatment equipment casing, and a sealing plate is arranged on the lower surface of the wastewater treatment equipment casing. According to the industrial wastewater treatment equipment capable of preventing blockage, a rotating shaft on a motor is arranged to drive a rotatingplate to rotate, so that rubber strips continuously clean the surface of a filter screen, the industrial wastewater treatment equipment is endowed with the function of preventing blockage, and the problem that the current industrial wastewater treatment equipment breaks down easily due to easy blockage in the filtering process when industrial wastewater is purified for preventing environmental pollution is solved.

The invention aims to provide an asphalt VOCs waste gas purification device which is used for the waste gas treatment of an asphalt production workshop, and the heat exchange of the heat conduction oil in heat equipment in the asphalt production workshop. The device comprises a high-voltage electrostatic dust removal device, an induced draft fan, a heat accumulating type combustion and heat conduction oil heat exchange device, a desulfurization tower and a chimney. The device has the following advantages: the smell of the VOCs waste gas in the asphalt, and oily and viscous substances in the smoke of the asphalt can be thoroughly and effectively removed. Meanwhile, the device is combined with a conduction oil heat exchanger. The heat transfer oil in the production process is subjected to heat exchange by using the hearth heat of a heat accumulating type combustion device. Due to the fact that the heat exchange efficiency of a regenerative chamber combustion device can reach 95% or above, the problem of waste gas purification is solved. Meanwhile, the use of the boiler in the asphalt production process can be reduced. The purposes of saving energy consumption and achieving clean production are achieved.