44results about "Water/sewage treatment" patented technology

This invention has a series of multiple parallel plates that form desalination chambers between them that have seawater or other saline water flowing down the inside of one plate of each chamber. Steam which is generated by solar heat or other heat source condenses on the outside of first chamber of the series on the plate, which has seawater running down it. This releases heat that evaporates the seawater. The vapor flows to the other wall (plate) of the desalination chamber and condenses, and this releases heat that flows through the plate to the next stage of parallel plates and evaporates seawater flowing down the other side of the plate. Each succeeding stage operates at a lower temperature than the previous stage. The final stage is cooled by the evaporation of seawater into the air. One embodiment of the invention has the parallel plates sloped at an angle to the horizontal so that the seawater flows down on the lower plate and evaporates with heat supplied from below. The vapor condenses on the ceiling of the chamber. Since each succeeding stage upward is at a lower temperature, the vapor pressure will be lower in succeeding stages. This pressure differential can be used to pump the seawater from one stage to the next higher stage.

This disclosure concerns a static oil/water separation chamber that is installed in a well extending to an underaround production formation containing hydrocarbon oil and water. The separation chamber has an inlet for receiving well fluid from a section below the separation chamber and two outlets. One outlet discharges a water-enriched component into a discharge well section, and the other outlet produces an oil-enriched component. The height of the separation chamber is larger than the thickness of the dispersion band that is formed under normal operating conditions.

The invention relates to a micro-electrolytic filler containing a catalyst, which comprises ferrum and carbon and is added with a catalyst. The mass percents of ferrum, carbon and catalyst in the filler are 45-55%, 40-50% and 1-5%, respectively. The catalyst is one or more of the following elements: copper, vanadium, molybdenum and antimony. The invention has the advantages that, firstly, the COD de-electrolyzing rate in wastewater which has large concentration of organic matters, high poisonousness and high chromaticity and is hard to treat biochemically is improved by 10-20%, the COD removing rate is about 35-60%, the chromaticity can be removed by 60-90% and meanwhile the B/C value is improved by 0.1-0.3 and biodegradability of the wastewater is improved; secondly, the cylindrical cellular structure of the filler is beneficial to ensure adequate contract reaction of the filler and water to reduce the flowing resistance of the water; and thirdly, the carbon bed is not easy to passivate and harden and be blocked by iron mud, and the amount of sludge is reduced.

The invention discloses a solar-powered seawater desalination device, a stove combined device and a using method thereof. The solar-powered seawater desalination device comprises a solar thermal collector, a seawater evaporator, a solar energy pumping station, an expansion tank, a condenser, a seawater storage container and a photovoltaic module, wherein the solar thermal collector is used for converting the solar radiation energy into heat energy so as to provide a heat source for a circulating medium; the seawater evaporator is used for heating the seawater so as to generate steam by taking the circulating medium provided by the solar thermal collector as a heat source; according to the solar energy pumping station, circulation of the circulating medium between the solar thermal collector and the seawater evaporator is realized; the expansion tank is connected with the solar energy pumping station, and the pressure change of the circulating medium in a circulating path is regulated by storing or releasing the circulating medium; the condenser is used for cooling the steam conveyed by the seawater evaporator so as to form fresh water; the seawater storage container is used for storing the seawater and supplying the stored seawater to the condenser so as to serve as cooling water by virtue of a seawater supply pump; and the photovoltaic module is used for converting the solar energy into electric energy for providing power for electric equipment. Therefore, seawater desalination can be rapidly realized by virtue of solar energy only.

Methods and devices for isolating nucleic acids from a mixture containing such nucleic acids and extraneous matter are provided. In one embodiment, the method of the invention comprises passing the mixture through a glass frit under conditions effective to separate the nucleic acids from the extraneous matter. In a more specific embodiment, the glass frit is a sintered glass frit.

The invention discloses a photothermal evaporation surface, and a preparation method and an application thereof, and belongs to the technical field of solar photothermal utilization. The photothermalevaporation surface is formed by attaching porous microstructures, which are periodically arranged in an array, to the surface of a substrate, and every porous microstructure is a coffee ring-shaped structure formed by the accumulation of nanoparticles; and a micro-droplet generator is used to periodically arrange nanofluid droplets on the surface of the substrate in the array manner, and heatingis carried out to evaporate the droplets until dryness in order to form the coffee ring-shaped porous microstructures, periodically arranged in the array manner, on the surface of the substrate. The photothermal evaporation surface provided by the invention has a high photothermal conversion efficiency and can be repeatedly used, and the preparation method has the advantages of very small use amount of the nanofluid required for preparing the high-efficiency photothermal evaporation surface, low cost, and facilitation of industrial application.

In an electric discharge machining apparatus that machines a workpiece (1) by using a water-based dielectric fluid as a dielectric fluid while a voltage is being applied to a machining gap between an electrode (2) and the workpiece (1), the electric discharge machine includes:

an anticorrosive power source section (26) that applies a predetermined voltage by taking the workpiece (1) as a cathode and taking as an anode an anticorrosive electrode (25) opposing the workpiece (1) with an insulator (24) therebetween;

a dielectric fluid quality measuring instrument (22) that measures a quality of the dielectric fluid; and

a dielectric fluid quality control section (16, 17, 18, 19, 20, 21, 23) that controls a pH level of the dielectric fluid to be within a range from 8.5 to 10.5 on the basis of the measured result of the dielectric fluid quality measuring instrument (22).

The invention discloses a method for electrochemical pretreatment on methyl sulcotrione pesticide wastewater. The method comprises the following steps: preparing a titanium-based tin antimony ruthenium cerium oxide electrode by using a coating-thermolysis method, feeding high-concentration methyl sulcotrione wastewater through an electrolytic cell which takes the titanium-based tin antimony ruthenium cerium oxide electrode as an anode, and continuously treating the wastewater for a certain time under certain current density. The titanium-based tin antimony ruthenium cerium oxide electrode is very good in stability, high in oxygen evolution potential and high in catalysis and oxidation capabilities. According to the method, the titanium-based tin antimony ruthenium cerium oxide electrode is adopted to pretreat high-concentration, high-salt and hard-biochemical wastewater generated in the production process of methyl sulcotrione, and the result shows that under conditions of certain pH values, current density and treatment time, the COD removal rate of the methyl sulcotrione can be greater than 50%, the BOD/COD is increased to be greater than 0.3 from less than 0.1, and the biodegradability is greatly improved. The electrochemical oxidation of the titanium-based tin antimony ruthenium cerium oxide electrode is very applicable to pretreatment on biochemical degradation of the high-salt high-concentration wastewater generated in the production of methyl sulcotrione.

The invention relates to a desulfurization wastewater zero discharging system and method based on waste heat reuse under a low-load working condition. The desulfurization wastewater zero discharging system comprises an economizer flue gas bypass subsystem and a desulfurization wastewater evaporation subsystem, wherein the economizer flue gas bypass subsystem comprises an economizer bypass flue, and can increase the flue gas temperature and the denitration efficiency under the low-load working condition; the desulfurization wastewater evaporation subsystem comprises a wastewater pipeline, a softening box, a concentration device, a wastewater preheater, a flue gas cooler, a heating medium water pump, a heating medium water pipeline, a wastewater pump and an atomization sprayer, and can perform concentration reduction, preheating and atomization on the wastewater to improve the evaporation efficiency of the wastewater. The invention further relates to a method for realizing zero discharging of the desulfurization wastewater under the low-load working condition by using the desulfurization wastewater zero discharging system based on the waste heat reuse. The system and the method havethe characteristics of a simple technological process, and can make effective use of waste heat of the flue gas to realize zero discharging of the wastewater under the low-load working condition of aunit and also improve the system denitration efficiency.

Disclosed is a preparation method of a residual-sludge-based particle electrode carrier. The invention relates to resource treatment of solid waste of sludge, and the technical problem of a low utilization ratio of residual sludge is solved. The method comprises: 1, preparation of absolutely-dried sludge powder, 2, preparation of raw material balls; and 3, calcination. Residual-sludge ceramic particles are taken as the particle electrode carrier, and a catalyst of Sb-SnO2 is loaded on the surfaces of the residual-sludge ceramic particles by utilizing a pyrolytic process to form a particle electrode of residual-sludge-based sludge ceramic particles loaded with Sb-SnO2. By using the prepared porous residual-sludge ceramic particles, the disposal cost of sludge is reduced. The particle electrode carrier with excellent performance is formed by loading Sb-SnO2 on the residual-sludge ceramic particles. The residual-sludge-based particle electrode carrier is applicable to treatment of printing and dyeing wastewater, the treatment efficiency is improved, and the treatment cost of waste water is reduced. The method is used for preparing the residual-sludge-based particle electrode carrier.

The invention relates to the water treatment industry, in particular to deep filtration and purification of drinking water. The invention discloses a method for collecting and releasing a filtering hose of a water purifier. The water purifier comprises a filter element and a base with a water inlet, a water outlet and a hose storage cavity, wherein the filter element is connected in series between the water inlet and the water outlet of the base to form a filter passage; the filtering hose is partially positioned in the hose storage cavity and is communicated with the corresponding water port of the base. The invention is characterized by also comprising a disk hose putting and withdrawing device which is arranged in the hose storage cavity and is rotationally contacted with and cooperated with the base through a rotation shaft arranged at the disk center and a rotator support arranged on the base. The filtering hose is partially rolled on the disk hose putting and withdrawing device and is sealingly and rotationally connected to the corresponding water port of the base. The length of the extending part changes along the rotation of the disk hose putting and withdrawing device, which satisfies the different demands to the length of the machine connection hose.

The invention relates to the technical field of waste water treatment, in particular to a method for treating waste water containing the sulfate radical. The method for treating the waste water containing the sulfate radical is characterized in that in the treatment process, a lead sheet is taken as an anode, an inert conductive material is taken as a cathode, the waste water containing the sulfate radical is subjected to electrolytic treatment, Pb<2+> produced by anode lead sheet reaction and the sulfate radical form PbSO4 sediment, the sediment is separated by filtration, and the waste water is discharged after the pH of the filtrate is adjusted. According to the method, the technological process is simple, control is easy, closed cycle is easy to establish, the method is environment-friendly, no secondary pollution is produced, waste residues can be recycled, optimization utilization of the resources is realized, and the waste water treatment cost is reduced.

The invention discloses a heavy metal ion chelating agent for treating electroplating wastewater and a preparation method and application of the heavy metal ion chelating agent. The preparation method includes the steps of firstly, dropwise adding a magnesium sulfate solution into a sodium silicate solution, magnetically stirring for 2-4 hours, and performing hydrothermal reaction to obtain magnesium silicate gel liquid; secondly, dissolving 4-amino benzo-18-crown ether-6 into an organic solvent; thirdly, adding the solution obtained in the second step into the magnesium silicate gel liquid obtained in the first step, magnetically stirring for 2-4 hours, evenly mixing, performing hydrothermal reaction, filtering after the reaction, performing suction filtration on a filtered product, washing, and drying to obtain the heavy metal ion chelating agent. The preparation method has the advantages that the heavy metal ion chelating agent prepared by the method is used for treating the electroplating wastewater and especially the electroplating wastewater whose heavy metal ions mainly exist in the form of compounding agent complexing, and high removing rate and high-stability removing of the heavy metal ions can be achieved.

The invention discloses a preparation method of a graphene and inorganic polymer composite electrode. The method comprises the following steps: mixing and stirring fly ash, graphene, sodium silicate,potassium hydroxide and deionized water into a slurry, uniformly dip-coating the surface of a pretreated steel substrate with the slurry by a dip-coating proess, and carrying out a maintenance reaction process to obtain the graphene and inorganic polymer composite electrode, wherein the dosages of the graphene, the sodium silicate, the potassium hydroxide and the deionized water are respectively 0-1%, 37%, 11.2% and 50% of the mass of the fly ash. The electrocatalytic degradation rate of an indigo dye can reach 100% when the graphene and inorganic polymer composite electrode is used as an anode for electrocatalytic degradation of organic dye wastewater. The method not only realizes harmless utilization of industrial solid waste fly ash, but also provides a new approach for treatment of dyewastewater.

A method of removing a filtrate storage bottle from a water bath includes inserting at least two finger underneath a radially protruding lip of a filtrate storage bottle sealing cap and raising the at least two fingers to lift the bottle from the water bath. A side wall portion of the filtrate storage bottle sealing cap is smaller in perimeter than a circle surrounding the radially protruding lip. The cap creates a liquid tight seal with the filtrate storage bottle.

The invention discloses a device for treating high-concentration ammonia nitrogen in coking wastewater by using a surfactant. The device comprises a device main body (1), a water inlet (2) and a water outlet (3), wherein the water inlet (2) and the water outlet (3) are formed in the left and right sides of the device main body (1) respectively; the interior of the device main body (1) is divided into five connected reaction zones (4 to 8) from top to bottom. When the device is used for treating the high-concentration ammonia nitrogen in the coking wastewater, the generation of ammonia gas is avoided, so that secondary pollution is avoided, and effluent can reach a national primary standard. In addition, the device also has the advantages of simple structure, stable effect, ammonia nitrogen removal rate of more than 99.9 percent and the like, and is convenient to operate.

A method of eluting biomolecules, such as nucleic acids from a biological sample by electroelution is provided. An example of a method includes various steps, such as loading the biological sample to a device comprising a housing, at least two conductive redox polymer electrodes operationally coupled to the housing and a biomolecule impermeable layer disposed on at least one of the electrodes. The loading of sample is followed by initiating an electrical connection to generate an electric field strength sufficient to elute biomolecules from the biological sample; and eluting the biomolecules from the biological sample.

The invention relates to rotary type industrial wastewater treatment equipment and a using method thereof and belongs to the technical field of wastewater treatment equipment. The rotary type industrial wastewater treatment equipment comprises a shell, wherein an outrigger is installed on the lower end of the shell, a water inlet tube is arranged on one side of the shell, a water outlet tube is arranged at bottom part of the shell, a reducer is installed on the upper part of the shell, and the rotary body is driven to rotate by the reducer through a rotary shaft; a baffle is arranged on the rotary body and a scum board assembly is arranged on the lower part of the baffle. The rotary type industrial wastewater treatment equipment provided by the invention capable of effectively blocking the small solid matters in the wastewater is the solid-liquid separation equipment for continuously eliminating the impurities in the fluid, and namely is the indispensable special equipment for the production process in the industries such as urban sewage treatment, waterworks, power plant water inlets, textile, food processing, papermaking and leather, and the wastewater processing cost of the factory can be greatly reduced.

The invention relates to the technical field of chromium-containing wastewater treatment, in particular to a method for treating chromium in tanning dyeing and finishing wastewater. The method for treating chromium in tanning dyeing and finishing wastewater comprises the steps of (a) mixing pretreated dyeing and finishing wastewater with an induction reagent, and carrying out an induction reaction; and (b) adjusting the pH value of the material subjected to the induced reaction to be alkaline, and carrying out precipitation treatment, wherein the induction reagent comprises soluble metal salt. In the treatment method, the pretreated dyeing and finishing wastewater is mixed with the induction reagent, under the action of the induction reagent, a small quantity of residual neutral chromium complex in the wastewater is converted into a positive chromium complex, the charge property of complex-state chromium is changed, then the pH is adjusted, precipitation is carried out, chromium is removed, and the removal effect on chromium in the wastewater is greatly improved.

The invention relates to a sewage purifying agent with a low solid residual rate. The sewage purifying agent is prepared from the following components in parts by weight: 20 to 50 parts of diatomite, 45 to 55 parts of active carbon, 20 to 30 parts of vermiculite power, 20 to 35 parts of dickite, 10 to 20 parts of sericite powder, 15 to 25 parts of natural gypsum, 4 to 8 parts of zinc stearate, and 5 to 7 parts of carboxymethyl cellulose. The sewage purifying agent with low solid residual rate is suitable for purifying various waters, reliable in sewage purifying effect, low in price, convenient in use, environment-friendly, and capable of remarkably decreasing the solid residual rate.

The invention belongs to the technical field of seawater desalination, and particularly relates to a heat pump seawater desalination device utilizing an evaporators and a condenser. According to the heat pump seawater desalination device, a refrigerant circulating system comprises a compressor, a condenser, a throttle valve and an evaporator; a first seawater desalination system comprises a firstseawater tank, a first water pump, a condenser, a vacuum pump, a first heat exchanger and a fresh water tank; seawater in the first seawater tank is conveyed to the condenser by the first water pump,and is heated and vaporized to form salt-free water vapor; a second seawater desalination system comprises a second seawater tank, a second water pump and an evaporator; and seawater in the second seawater tank is conveyed into the seawater channel of the evaporator by the second water pump to form salt-free ice. According to the invention, fresh water is prepared by combining the condenser and the evaporator, so that the seawater desalination speed is increased, and the seawater desalination cost is saved.