113results about How to "Continuous removal" patented technology

A process for reducing the content and volume of organic matter in a wastewater stream comprises contacting the latter with a nanofiltration device so as to obtain a concentrate, and a permeate as an aqueous stream containing any salts of non-precipitable metal ions which may be present, then contacting the concentrate with a preferably backflashable ultrafiltration device, and optionally also with activated carbon. This process may be part of a broader one which also removes other components from the wastewater stream. A module comprising (a) a nanofiltration device; (b) a preferably backflashable ultrafiltration device; (c) conduit(s) adapted to convey nanofiltration device concentrate to the ultrafiltration device; and optionally (d) a vessel containing activated carbon; as well as a system for treating a wastewater stream which includes this module, also form part of the invention.

In the production process, tap water as material water is treated in four parts including pre-treatment unit, the first water purifying system, the second water purifying system and the end film filtering treatment system to prepare electronic level super-pure water. For the treating process, the pre-treatment unit includes sand filtering, superfiltering, active carbon adsorption and nanofiltering; the first water purifying system consists of reverse osmosis, film deairing, electrically deionizing, selective ion exchange resin to eliminate boron impurity and other units; the second water purifying sytem consists of ultraviolet lamp oxidation and polishing mixed bed resin; and the end film filtering treatment is polished reverse osmosis film treatment. The water purifying system has high efficiency, and low cost.

The present invention is directed to an apparatus and a method for continuously removing water vapor from a closed loop, re-circulated gas flow in an ion mobility spectrometer using a water permeable membrane, having a first side and a second side opposite the first side. The gas flow is disposed adjacent and carried past the first side to deposit water vapor that passes through the membrane to the second side. An exhaust flow is disposed adjacent and carried passed the second side of the membrane to remove the water vapor from the system. Therefore, the water removal apparatus continuously regenerates in-situ. Heaters, heat sinks and additional treatment systems including charcoal filters can also be included in the system to enhance its performance.

An artificial “arterio-venous” permeable hollow fiber capillary membrane system for wound treatment is described, that can be placed onto a wound, under the wound dressing, to enable fluid- / mass exchange, and thus enables pH- and electrolyte regulation, the supply of factors / mediators / medications, the removal of secretion- and / or waste material, and the support of therapeutically applied cells in the wound.

Disclosed are catalysts capable of catalyzing the dry reforming of methane. The catalysts have a core-shell structure with the shell surrounding the core. The shell has a redox-metal oxide phase that includes a metal dopant incorporated into the lattice framework of the redox-metal oxide phase. An active metal(s) is deposited on the surface of the shell.

A natural gas production system prevents liquid accumulation in the wellbore and minimizes friction loading in the wellbore by maintaining production gas velocity above a critical minimum velocity. A pressurized gas is injected into the well to supplement the flow of production gas such that the velocity of the total gas flow up the well exceeds the critical velocity. A choke is fitted to the gas injection line, and total gas flows are measured by a flow meter. A flow controller compares the measured total gas flow rate against the critical flow rate, and determines a minimum gas injection rate required to maintain the total gas flow rate at or above the critical flow rate. The flow controller then adjusts the choke to achieve the desired gas injection rate. The injection gas may be recirculated production gas from the well, or a gas from a separate source.

The invention discloses a chromogenic formaldehyde adsorbing material and a preparation method thereof. The adsorbing material consists of a carrier, a high molecular organic amine polymer, a polylol polymer and a formaldehyde reaction indicator, wherein the high molecular organic amine polymer and the polylol polymer account for 1 to 50 percent of formaldehyde adsorbent, the formaldehyde reaction indicator is little, and the balance being the carrier. The preparation method thereof comprises the following steps: mixing the high molecular organic amine polymer and the polylol polymer according to mass, adding deionized water to dilute the mixture so as to prepare formaldehyde reagent; mixing the formaldehyde reagent and the formaldehyde reaction indicator; and spraying or dipping the mixed solution onto the surface of the carrier, and drying the carrier and so on. The adsorbing material and the preparation method can quickly, thoroughly and continuously remove formaldehyde pollution in indoor air until the content of the formaldehyde is reduced to safe concentration, are nontoxic, pollution-free, safe and environment-friendly to use, and can intuitively show the reaction degree of the formaldehyde.

A device and method of use for a towed portable cleaning facility is disclosed. The device employs storage tanks for both the storage and transport of cleaning fluids. The tanks serve the additional function of surrounding and enclosing the cleaning area an area that may be used for cleaning or storage. By utilizing the tanks as walls, the present invention provides a portable cleaning station. The device may further include the ability to treat and clean used fluids in order to either reuse or safely dispose of the used fluids as well as the ability to recover heat energy from an engine compartment to heat cleaning fluids.

The invention provides a method for removing NO and SO2 from environment pollution emissions, which belongs to the field of electrochemistry technology and environment protection technology, in particular to an electrochemical method for simultaneous desulfurization and denitration without secondary pollution. The invention discloses the novel wet type electrochemical method, which has the advantages of simple operation, low cost, environment protection, capability of continuous operation at a higher removal efficiency and capability of singly or simultaneously realizing the desulfurization and the denitration. The invention is characterized in that firstly, carrying out electrolysis in a water-phase electrolyte to generate ferrous iron ions and compounds thereof to realize the effect of absorbing NO and SO2 from a gas phase to a liquid phase; and then, respectively reducing the NO into NH<4+> and N2 and oxidizing the SO2 into SO4<2-> through the electrochemical oxidation-reduction characteristics. The novel electrochemical desulfurization and denitration method can realize the removal of waste gas of single NO or SO2, can also be used for simultaneous desulfurization and denitration, has small influence by O2 and acidic gas such as HCL and the like in smoke gas, and has no emission of waste water or other secondary pollutants. The desulfurization efficiency and the denitration efficiency respectively reach more than 80 percent and more than 98 percent, and the continuous operation can be realized.

The invention relates to an aluminum rod surface oxidation layer removing device in the field of copper-coated aluminum busbar production devices. A machine base is arranged at the position under two guide wheel sets, a machine body is fixed to the machine base through a supporting plate and comprises a housing provided with a left end plate and a right end plate, a hollow mandrel is arranged at the center of the housing and sleeved with an inner sliding ring, an outer sliding ring is arranged outside the housing, a sliding groove is formed in the housing in the axial direction, and the inner sliding ring and the outer sliding ring are connected through a connecting rod penetrating through the sliding groove. The inner side of the right end plate is hinged to one end of a cutter bar, and the other end of the cutter bar extends out of a cutter bar hole formed in the left end plate and provided with a cutter bit. An oblique guide face is arranged on one side facing the mandrel, of the cutter rod, a rolling wheel is arranged on the inner sliding ring and abuts against the guide face, and a supporting spring is arranged on the other side of the cutter rod. An adjusting screw is connected to the supporting plate and connected with a shifting support, and the outer sliding ring is clamped on the shifting support. The aluminum rod surface oxidation layer removing device is used for removing an oxidation layer on an aluminum rod and can adjust cutting amount under the non-shutdown condition and achieve continuous copper-coated aluminum busbar production.

The invention belongs to an aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen, and belongs to the field of sewage treatment. The process comprises the following steps: aerobic or anaerobic sludge used as inoculated sludge is added into an aeration reactor for treating waste water containing high ammonia-nitrogen; zero-valent iron is added into the aeration reactor, the mol ratio between the added zero-valent iron to the ammonia-nitrogen concentration is 2-20:1, pH value of the waste water containing high ammonia-nitrogen is adjusted to 6.5-8.0, the waste water containing high ammonia-nitrogen is kept in the reactor for 0.5-5 days at 20-35 DEG C, and the wastewater reaches the standard and is discharged or enters into a next treatment process. The problem of incomplete nitrogen removal in present anaerobic ammoxidation nitrogen removal process is overcome, the technology defect of long time consuming is overcome, the aerobic biological nitrogen removal process for waste water containing high ammonia-nitrogen is totally operated by autotrophy, the nitrogen removal efficiency is high, and the starting time consuming is short.

An object of the present invention is to provide an optical measurement apparatus equipped with an ion-exchange resin for pretreating a sample, thereby enabling the concentration of component in the sample to be measured with higher accuracy. The optical measurement apparatus of the present invention includes, in addition to the ion-exchange resin, an optical measurement section for measuring, based on the optical characteristics of the component, the concentration of the component in the sample after the sample is passed through the ion-exchange resin.

The invention relates to a preparation method of an MXene aerogel composite nano material and application of the MXene aerogel composite nano material to adsorption of phosphorus and uranyl ions, and belongs to the technical field of nano adsorption materials, and the preparation method specifically comprises the following steps: 1) performing intercalation treatment on a multi-layer MXene (Ti3C2) material under the action of organic alkali to obtain a single-layer or few-layer D-MXene suspension; (2) adding Ca<2+> ions into the D-MXene aqueous solution to form stable MXene-Ca gel; and 3) immersing the MXene-Ca gel into a phosphate solution, taking out the gel after adsorption saturation, and drying the gel in a freeze dryer to obtain the MXene-Ca-P aerogel which can be used for efficiently adsorbing and removing uranyl ions. The preparation method is simple, the uranyl adsorption capacity is large, the irradiation resistance is good, phosphorus pollutants and uranyl in water can be continuously and efficiently removed, and the MXene aerogel has important application prospects.

An integrated lampblack purifying device comprises a casing with an installation cavity in the middle, a pore plate filter, a flow guiding device, a mesh filter, an ultraviolet purifier and a water tank arranged at the lower end of the casing. A water blocking board is arranged on the lower end portion of the casing and provided with an air inlet communicated with an installation cavity, and the pore plate filter, the flow guiding device, the mesh filter and the ultraviolet purifier are sequentially installed in the installation cavity from bottom to top. A fan installation site communicated with the installation cavity is arranged on the upper end portion of the casing, an exhaust fan mechanism is installed on the fan installation site, a distribution tube mechanism is arranged between the pore plate filter and the flow guiding device, a water pump is arranged on the water tank, and the distribution tube mechanism is connected with the water pump through a water conveying tube. The integrated lampblack purifying device integrates multiple purifying modes including physical purifying, chemical purifying and photocatalysis purifying, achieves classified purifying of lampblack and brings better lampblack purifying effect. The integrated lampblack purifying device has a self-cleaning function and can work continuously and effectively for a long time, and no lampblack attachment can be accumulated in the device.

The invention belongs to the technical field of environmental engineering, and in particular, relates to an application of filamentous oil producing alga tribonema in removal and degradation of industrial phenol pollutants in an environment, and specifically, relates to the application of the filamentous oil producing alga in treatment of industrial phenol pollution in the environment. Compared with unicellular algae, the used filamentous alga has the advantages of easy recovery, strong stress resistance and the like, can directly achieve efficient recovery through filter cloth filtration, low-speed centrifugation and other methods without addition of a flocculant, and prevents water body secondary pollution; at the same time, the tribonema has excellent abilities to absorb and degrade phenol and derivatives thereof and can continuously reduce the phenol concentration to 1-2 mg / L from phenol wastewater with the concentration of 200-800 mg / L, the removal rate of the phenol pollutants can reach 99%, and the oil content of obtained algal biomass can reach 40-50%, and the need of extraction of biological oil can be fully met. The method provides an efficient and low-cost way for resource utilization of industrial phenol-containing wastewater.

The invention discloses a continuous clean deodorizing method for activated sludge fermentation gas, which pumps gas generated by the fermentation of the activated sludge into a liquid medicine washing tower by an exhaust fan, by using the liquid medicine for spray washing, emptying is realized after fermentation smell is removed, and the liquid medicine is circularly used by a pump, thus solvingthe problem that the activated sludge fermentation gas needs the continuous clean deodorizing, having the advantages of simple equipment, easy operation, and continuous, fast and clean removing odor generated by the fermentation of the activated sludge and the like, and being widely applied to deodorizing of the activated sludge.

The present invention provides long chain, active polyether polyols which are characterized by a functionality of 2 to 6 and an equivalent weight of 1000 to 2200 Da. These long chain polyethers comprise the alkoxylation product of (1) a starter composition having an equivalent weight of 350 Da or less, with (2) one or more alkylene oxides, in which up to 20% of ethylene oxide may be added as a cap, in the presence of (3) at least one basic catalyst. Suitable starter compositions (1) comprise the alkoxylation product of (a) a low molecular weight polyether having a functionality of 3 and an equivalent weight of less than 350 Da, (b) at least one low molecular weight starter compound comprising glycerin, and (c) propylene oxide or a mixture of propylene oxide and ethylene oxide, in the presence of (d) at least one double metal cyanide catalyst. A process for preparing these long chain polyether polyols is also disclosed.

A device for purifying liquid in a reservoir and including a vacuum chamber (1) having an inflow opening (2) and an outflow opening (3) adapted to communicate with the liquid in the reservoir through a feed conduit (4) and a return conduit (5), respectively. The return conduit (5) is provided with a pump (6) and the vacuum chamber is connected with a vacuum pump (7). The device further includes a filter cartridge (8) provided with a plurality of filter elements, each having a flow side communicating with a central passage (36) and a flow side opening into the periphery of the filter cartridge (8). The filter cartridge (8) is arranged inside the vacuum chamber, the central passage (26) of the filter cartridge communicating with the inflow opening (2) of the vacuum chamber.

The present invention relates to a bio-gas hydrogen sulfide removal device which can continuously remove hydrogen sulfide in bio-gas. The bio-gas hydrogen sulfide removal device adopts ion exchange fiber Pall ring for bio-gas purification. The Pall ring is filled in a net drum cylinder. The Pall ring is provided with ion-exchange fiber. When the drum rotates, the Pall ring precipitates in a regeneration liquid for ion exchange. Through the internal friction shock of the Pall ring, under the condition of without an external additional device, the regenerated chloride is removed efficiently, so that the hydrogen sulfide scavenging capacity is maintained at the maximum, and the use amount of the regeneration liquid is reduced. In addition, hydrogen sulfide from bio-gas is removed, so that the damage of hydrogen sulfide in the process of using bio-gas is minimized. Corrosion for power equipments and boilers can be prevented by using bio-gas as a fuel.

The invention provides a seawater desalination method for an integrated membrane process and belongs to a water desalination technology. Aiming at the defects of high investment, high pressure, high energy consumption and the like in an existing membrane-method seawater desalination process, 'nanofiltration / electrodialysis reversal' is taken as a core desalination process, wherein during nanofiltration, a high-desalination nanofiltration membrane with desalination ratio of 90% is adopted; during electrodialysis reversal, a thin-type electrode chamber is filled with a multistage multi-section energy-saving electroosmosis device provided with mixed-bed ion exchange resin. Seawater raw water is sequentially pretreated by virtue of a coagulative precipitation tank, a settling tank, a sand filter and an ultrafiltration membrane, and then is subjected to graded desaltination sequentially by virtue of a nanofiltration desalination device with an energy recovery device, and an energy-saving frequent electrodialysis reversal device; nanofiltration and energy-saving electrodialysis are respectively performed at low operation pressures which do not exceed 3.8MPa and 0.4MPa; the salt content of water produced by the system is 80-250mg / L, the total desalinization ratio can be mechanically regulated within a range of 99-99.75%, the body power consumption of per ton of water does not exceed 2.15KWh / m<3>, the investment and energy consumption of the whole seawater desalination process are obviously reduced, and the process operation is relatively safe and stable.

The invention discloses a device and method for controlling chloride ion permeation of reinforced concrete. The device comprises a concrete protection layer and a cathode protection loop, and furthercomprises a monitoring circuit and a porous absorption layer arranged between the concrete protection layer and a protected concrete main body, wherein a liquid inlet is formed in the lower part of the porous absorption layer, and a liquid outlet is formed in the upper part of the porous absorption layer; the monitoring circuit comprises a monitoring power supply; and the two ends of the monitoring power supply are respectively connected with the two ends of another reinforcing steel bar except the protected reinforcing steel bar in the protected concrete main body. The device can directionally move and remove harmful chloride ions in the reinforced concrete and the protection device at the same time, so that the purposes of recovering the function of the reinforced concrete structure andprolonging the service life of the reinforced concrete structure and the service life of an anode of the protection device are achieved. The device is low in energy consumption and simple and convenient to mount; the protection current does not need to be continuously started, so that over-protection of the reinforced concrete structure can be effectively avoided; and the damage to the anode in the using process is reduced, and regular replacement is not needed.

The invention provides a membrane washing system that can continuously remove fine dust, diaphragm or tainting substance that attached to the plastic membrane. The system comprises a washing part (36) that washes a mobile membrane with washing liquid; and a drying part (38) that drys the washed mobile membrane. The washing part (36) is provided such a structure that at least one side of the membrace is supplied with washing liquid while moving the membrane (12).

Silicon deposited by CVD and / or silico dust is removed from a polycrystalline silicon deposition reactor component by abrasion with silicon-containing particles in a gas stream.

A wind driven cleaning ring apparatus for removing dirt on electrical insulators used in electric systems. The cleaning ring apparatus includes spaced apart bowl members supported on a cylindrical ring member by being sleeved over the ring member or formed integral therewith. The bowl members may be hemispherical or conical in shape and may be held spaced apart on the ring member by spherical or cylindrical beads. The bowl members may include a peripheral scraper edge. Spaced apart circular brushes and / or scraper members may be mounted on the ring member between respective ones of the bowl members.