795 results about "Media filter" patented technology

A system and method for a media filter publication application are described. The media filter publication application receives a content item and a selected geolocation, generates a media filter based on the content item and the selected geolocation, and supplies the media filter to a client device located at the selected geolocation.

This invention discloses a cost-effective process for separating contaminants and a wide-range of fouling material from surface water, ground water and from industrial effluents. Having undergone effective pre-treatment, the water can be purified further by using high-surface area spirally wound micro-filtration (MF), ultra-filtration (UF), nano-filtration (NF) or reverse osmosis (RO) membranes. High-quality potable water free from pathogen and other contaminants is thus produced at low-cost from the pre-treated surface water and ground-water. Conversely, pre-treated industrial effluents are further purified at a relatively low-cost using NF or RO membranes, thus producing water suitable for recycle or surface discharge. The process of this invention uses cationic inorganic and / or polymeric flocculants to coagulate and flocculate the water-borne colloidal matter (e.g. clays, iron hydroxides, naturally occurring matter (NOM's), etc.), followed by filtration using a multi-media filter, charge neutralization and reversal and final filtration using a 5-micron cartridge filter. These pre-treatment steps provides a good quality water having a low Silt Density Index and a significant negative zeta potential, thereby ensuring against irreversible chemical fouling of the spirally-wound membranes.

A filter assembly is provided having a housing and a cover that communicate to retain a filter element. The housing has a top and a bottom spaced apart from each other, and a first pair of guide members is maintained beneath the top while a second pair of guide members is maintained above the bottom. The filter element is retained in the housing between the first and second pair of guide members thereby defining a first cavity between the top and the filter element and a second cavity between the bottom and the filter element. Fasteners, such as screws, rivets, nails and the like, may communicate with the cavities without damaging the filter element. The first and second pair of guide members allow for access to the internal surface area of the top and bottom of the housing such that fasteners or other installment means can be employed from the inside of the housing outwardly to the duct work or framework to which the filter assembly is to be attached.

A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.

A carbon media filter element with urethane frame and seal has a border member composed of urethane providing a combined structural frame and seal extending along the perimeter and providing both the support frame for the media and a seal along the ends of the media sheet retaining carbon granules between backing layers and preventing escape of carbon granules out of the end. Manufacturing apparatus and methods are provided.

A system and method of treating wastewater from an animal confinement operation. The system including at least a first lagoon receiving water from the confinement operation. The system further including a free surface water wetland, a subsurface flow wetland and a vertical flow recirculating media filter. The first artificial wetland including a pipe such that water from the lagoon flows into the first artificial wetland through an inlet of the pipe and is contained within the wetland. The first wetland further including a plurality of wetland plants. A second subsurface flow wetland and a vertical flow recirculating media filter on top of the subsurface flow wetland and wetland plants contained within a first pea gravel bed on top of a coarse gravel bed of the subsurface flow media filter such that water from the lagoon is received by the first wetland. A recirculation pump receiving water from the horizontal coarse gravel bed and the pump recirculating water to the wetland plants of the vertical flow recirculation media filter such that ammonia in the water is converted to nitrate and water as it falls vertically through roots of the wetland plants and the nitrate is converted to nitrogen and water the water flows horizontally through the subsurface flow wetland.

Disclosed herein is a cooling system for vehicle battery packs, including a double filter device mounted at an air inlet part, through which air for cooling the battery pack is introduced from the outside and / or the inside of the vehicle. The double filter includes a pre-filter having relatively large air holes, the pre-filter having high frequency of replacement, and a medium filter having relatively small air holes, the medium filter having low frequency of replacement. The pre-filter is located before the medium filter in the direction in which the air is introduced. Consequently, dust is removed from air, and therefore, the cooling efficiency of the battery pack is increased. In a preferred structure, metal dust is also effectively removed by the magnetic force applied to the medium filter. Consequently, the malfunction or short circuits of the battery pack are prevented. Also, air surrounding the battery pack is directly introduced through the through-type intake ports without passing through any pipe-shaped intake duct. Consequently, generation of noise, which is a problem caused when air in the cabin is used, and backward flow of flames and toxic gas, which are generated during a fire, are prevented. Furthermore, the battery pack is constructed in a compact structure.

A method or process for treating wastewater containing high organics, silica, boron, hardness, and suspended and dissolved solids. The method includes degasifying the wastewater for the removal of dissolved gases and thereafter chemically softening the wastewater. After the chemical softening step, the wastewater is directed through a media filter or membrane which removes additional solids and precipitants. Thereafter the wastewater is directed through a sodium ion exchange that further softens the wastewater. The effluent from the ion exchange is directed through a cartridge filter and the effluent from the cartridge filter is directed through one or more reverse osmosis units. At a selected phase of the process, prior to the wastewater reaching the reverse osmosis unit or units, the pH of the wastewater is raised and maintained such that the pH of the wastewater reaching a reverse osmosis unit is at a pH greater than 10.5.

Handling of input or output (I / O) to or from a media device may be implemented in a system having a memory, a processor unit with a main processor and an auxiliary processor having an associated local memory, and the media device. An incoming I / O request received from an application running on the processor unit may be serviced according to the schedule. A set of processor executable instructions configured to implement I / O handling may include media filter layers. I / O handling may alternatively comprise: receiving an incoming I / O request from an application running on a main processor; inserting the request into a schedule embodied in the main memory; and implementing the request according to the schedule and one or more filters, at least one of which is implemented by an auxiliary processor.

The invention relates to a recycling treatment process for coal coking high-salinity wastewater. The process comprises the following steps: (1) fluorine removing; (2) silicon removing; (3) softening;(4) treatment with a multi-medium filter; (5) ultrafiltration; (6) resin softening; (7) FDG; (8) nanofiltration and salt separation; (9) reverse osmosis concentration; (10) advanced oxidation; (11) resin adsorption; and (12) evaporative crystallization. The process has the advantages that the process of pretreatment, nanofiltration salt separation, reverse osmosis concentration, advanced oxidationand evaporative crystallization is adopted, so that zero emission and quality-divided resource utilization of the coal coking high-salinity wastewater are realized.

The invention discloses a rainwater collection storage utilization process. The process comprises the following steps of: collecting rainwater on a roof, intercepting pollutants in the rainwater, performing initial rainwater discarding, regulating and storing the rainwater, filtering the rainwater, disinfecting the rainwater, and feeding into a recycling water tank for later use, wherein in the step of initial rainwater discarding, the rainwater of which the pollutants are intercepted is introduced into a rainwater discarding pool, dirt deposited on the lower part of the rainwater discarding pool is discharged from a drain pipe, and water on the upper part of the rainwater discarding pool is introduced into a rainwater regulation and storage pool for regulation and storage; in the step of regulating and storing the rainwater, the water in the rainwater regulation and storage pool is regulated and stored, and when the rainwater stored in the pool is excessive, the excessive water is introduced into a municipal drainage system; and in the step of filtering the rainwater, the rainwater is filtered by a multi-medium filter. By the process, most of pollutants in rainwater runoff can be controlled, and the load of subsequent treatment equipment is reduced; the water quality of effluent is higher than that of effluent of the conventional filter, and the turbidity of the effluent is less than 4; and when the process is implemented, a small space is occupied, and during use, the process is not limited by environmental conditions.

The present invention relates to stationary cloth media filtration systems and devices, as well as processes and devices for uniform flow distribution and improved cloth media filter backwashing.

A stormwater treatment system and method for removing sediment, chemical pollutants, and debris from stormwater runoff by utilizing bioretention practices including physical, chemical and biological processes by passing stormwater runoff water through a multi-phase filtering and treatment train. Stormwater is initially directed to and enters a pretreatment collection chamber located within or exterior of a primarily open-bottomed, multi-dimensional container whereby entrained sediment and other transportable materials are captured and collected prior to continued transport, filtration and treatment through a media filter layer. A live plant (preferably a tree) situated within the container with roots resident in the media filter layer with the ability for expansion beyond the perimeter of the container through openings in one or more sidewalls. The treated water may be further conveyed to a separate compartment or storage area for additional filtration and temporary collection and storage, or discharged exterior of the container. A vertically positioned overflow / bypass piping apparatus may be included within the stormwater treatment system to provide additional water conveyance. Additional ancillary filtration and storage facilities may be connected to the described stormwater treatment system as conditions warrant.

The invention relates to a simulator based on the distributed optical fiber sensation to detect dam seepage, wherein it comprises: optical fiber sensing demodulator, sensing optical cable embedded into the dam model media inside the box; and the dam seepage simulating controlling unit around the sensing optical cable which mainly comprises a main transmitting tube and several branch transmitting tubes inserted into the box; the end of branch transmitting tube has media filter network and temperature humidity sensor; the mina transmitting tube has flux control valve; the bottom of box has movable bottom plate; therefore, it can simulate the detection on the dam seepage. And it can be used to search the dam seepage or be used as experiment equipment.

An assembly for filtering contaminants from automatic transmission fluid includes a housing including a first inlet and a second inlet, through which fluid enters the housing, and an outlet, through which fluid exits the housing; a first media filter located within the housing in a first fluid flow path between the first inlet and the outlet; and a second media filter located within the housing in a second fluid flow path between the second inlet and the outlet.

Certain embodiments of the invention provide systems that filter surface water runoff that enters sewer or storm drains. Some embodiments of such systems are composed of a top plate, a main filter chamber, and an enhanced media filter, and each of the top plate, the main chamber, and the enhanced media filter are shaped for mounting into a storm drain. In some embodiments, the top plate is shaped to overlap a perimeter of the sewer or storm drain hole and has a surface water intake opening. In some embodiments, the top plate, the main filter chamber, and the enhanced media filter are vertically arrayed, respectively, from top to bottom.

A method for re-use of the same water to do multiple loads of laundry over and over again. The method includes the step of collecting the used wash water from a washing maching. A lint / grit removal stop is followed by a second lint removing step. A free oil removal step is followed by a grease, hydrocarbon and suspended solid removal step undertaken by a media filter. A hydrocarbon absorption filter step is then followed by an activated carbon filter step. The used wash water is further purified by an ozone injection step. Still further, a heat exchange step is provided before the step of re-introducing the used wash water back to a washing machine facility from whence it came.

A recycling system for laundry wash water having a collection tank for collecting used wash water. A holding tank connected to the collection tank has heat exchange piping in the interior of the holding tank. A lint / grit separator is connected to the holding tank. A lint filter acting as a second stage in lint removal is connected to the holding tank. An oil separator for removing free oil is connected to the lint filter. A media filter having a medium of fine rock is connected to the oil separator. A hydrocarbon absorption filter is connected to the media filter. An activated carbon filter is connected to the hydrocarbon absorption filter. A final holding tank is connected to an ozone generator so that clean and processed water leaves the final holding tank. Clean and processed water leaving the final holding tank is channelled to the heat exchange piping in the holding tank which uses the used wash water from the collection tank to heat the clean and processed water before the clean and processed water goes on to a hot water server connected to a wash machine facility.

The invention relates to a system for recycling and treating coking wastewater. The system comprises an electrocoagulation floatation pond, an electrocoagulation floatation dregs-scraping machine, an electrocatalysis oxidation pond, a membrane biological reaction pond, a membrane bioreactor water-discharging pump, a multi-medium filter, a carbon filter, a security filter, a reverse osmosis high pressure pump, a reverse osmosis device, a reverse osmosis water-producing pond, a reverse osmosis water-producing delivery pump, a filter reverse washing pond, a filter reverse washing pump, a reverse osmosis washing pond, a reverse osmosis washing pump, a reverse osmosis concentrated water pond, a reverse osmosis concentrated water delivery pump and a pipeline mixer, wherein the electrocoagulation floatation pond is internally provided with an electrocoagulation electrode and an electric floatation electrode; the electrocatalysis oxidation pond is internally provided with an electrocatalysis oxidation electrode; and the membrane biological reaction pond is internally provided with a membrane bioreactor. The treatment system has stable treatment effect, low production and operation cost, and convenient and simple operation, can treat and utilize the water drained from a biochemical precipitation pond, avoid the physical and chemical treatment section after the normal biochemical treatment, avoid using a large amount of medicament, reduce the sludge treatment amount of the system and lower the operation cost of wastewater treatment.

The invention discloses a reverse osmosis pre-treatment method for recycling reclaimed water in an electric power plant. The reverse osmosis pre-treatment method comprises the following steps: 1) coagulating and clarifying the reclaimed water; 2) filtering in a filtering tank with variable pore aperture; 3) filtering with a multi-medium filter; 4) softening with a strong-cationic sodium ion exchanger; 5) softening with a double-chamber weak-acid and strong-acid cationic exchanger; and 6) adjusting the pH value. The reverse osmosis pre-treatment method has the advantages that: the reclaimed water is pre-treated before reverse osmosis, thereby greatly reducing the reverse osmosis scale formation and contamination blockage risks caused by hardness, COD (chemical oxygen demand), SiO2 and the like in the reclaimed water, prolonging the service life of a reverse osmosis membrane element, and improving the reverse osmosis operation stability of the electric power plant.

By the method, muddy circular water is preprocessed to adjust its pH value to 7-7.5, and is send into aeration tank to get rid of ironion, then is send into mechanical reaction tank to uniform mix flocculator and coagulant aids, it is became preprocessed water after getting rid of partial suspended substances by cantboard precipitation tank. One part of preprocessed water is send into blending water tank after getting rid of impurity by filter, the other part is send into ozone reaction tank to get rid of larger impurity in water by mutiple medium filter after disinfection, then it is send into microfilter to entrapment particle (diam more than 20 um), and is send into safety filter to entrapment particle (diam more than 5 um) and primary get rid of salt by first stage reverse osmosis treatment, one part is send output, one part is send to blending water tank to be blended to clean circular water, the other part is processed by secondary reverse osmosis treatment and mixed bed treatment.

The invention relates to a device for treating high-concentration electroplating wastewater and application thereof. The device comprises an electroplating wastewater regulating tank, a micro-porous aeration neutralization reaction tank, an intermediate water tank, a coagulation inclined-plate sedimentation tank, a sludge concentration tank, a multi-media filtering tank, a clear water tank, a calcium hydroxide dosing tank, a sodium hydroxide dosing tank, a polyacrylamide dosing tank, a hydrochloric acid storage tank, a chamber filter press, a water pump, a dosing pump, an air blower and a consistency pump, wherein the high-concentration electroplating wastewater can be treated by using the components based on the combined process of micro-porous aeration neutralization reaction, coagulation inclined-plate sedimentation and multi-media filtering. The device for treating the high-concentration comprehensive electroplating pickling wastewater has the advantage of significant removal effect, particularly, the removal rate based on COD (chemical oxygen demand) is higher than 80%; the removal rate of petroleum-related pollutant is higher than 95%; the removal rate of phosphorus, zinc and copper in total and the removal rate of iron in total are higher than 99.5%; the removal rate of chromium in total is higher than 99%; and the removal rate of nickel is higher than 90%. Therefore, the device of the invention is applicable in treating high-concentration electroplating wastewater and pickling wastewater.

The invention relates to a method for preparing fresh-water ice by utilizing sweater and brackish water. The existing ice marker only has a pure ice making function and does not have a desalting function. The method comprises the following steps of: performing primary filtration, secondary filtration, tertiary filtration and quaternary filtration on the seawater or the brackish water sequentially through a multi-medium filter, a security filter, a micro-filtration membrane and an ultra-filtration membrane, so as to obtain the quaternary filtered fluid; desalting the quaternary filtered fluid by virtue of a separating method of membrane distillation, forward osmosis or electro-osmosis to obtain desalted water with the purity greater than and equal to 99.9%; and obtaining the fresh-water ice through air-cooling or water-cooling condensing of the desalted water. According to the method disclosed by the invention, the fresh-water ice can be automatically prepared by utilizing the seawater or the brackish water; when the inlet water is the seawater or the brackish water with salinity higher than 2%, the fresh-water ice can be prepared through multi-medium filtration, security filtration, micro filtration, ultra-filtration and salt-water separating systems as well as an ice making system, so that the method is especially applicable to the needs of catching and fresh-keeping of ocean fishing vessels.

The invention provides a desulfurized waste water treatment method. The method comprises the steps that 1, desulfurized waste water enters an aeration adjusting pool, and sulfite ions in the desulfurized waste water are oxidized into sulfate ions under the action of an aeration device; 2, the desulfurized waste water is conveyed into a pH adjusting box, and lime is put into the pH adjusting box to relieve temporary hardness; 3, in a first-level reaction settling box, organic sulfur is added for further depositing heavy metal which can not be deposited in a hydroxide form; 4, in a first-level flocculation box divided into two cases, coagulant is added, many tiny floccules are condensed and formed; 5, the tiny floccules are conveyed into a first-level clarification tank so that the generated floccules and suspended solids in the waste water can be deposited and separated; 6, sodium carbonate and a sodium hydroxide solution are added into a second-level reaction settling box, and calcium ions and remaining magnesium ions in the waste water are deposited; a second-level clarification tank is used for depositing and separating the generated floccules; water produced by a multi-medium filter is sprayed into a flue to be vaporized through a spiral atomizing nozzle.

The invention discloses a coking wastewater comprehensive treatment method comprising the following steps of: pre-treatment, biochemical treatment and deep treatment. The deep treatment step comprises sequential steps of filtering, ultra-filtering, carrying out resin adsorption, re-filtering, and carrying out reverse osmosis. With the adoption of a coking wastewater comprehensive treatment system of the coking wastewater comprehensive treatment method, the pre-treatment step adopts a de-oiling pond, an adjusting pond and an air floating pond, which are connected in sequence; the biochemical treatment step adopts a primary aeration pond, a primary settling pond, an oxygen-poor pond, an aerobic pond and a secondary settling pond, which are connected in sequence; and the deep treatment step adopts a multi-medium filter, an ultra-filtering device, a resin adsorption column and a reverse osmosis device. The coking wastewater comprehensive treatment method has the beneficial effects that the method is stable to operate and has a simple process and good treating effects.

The invention relates to a process method and a device for desalting seawater at low temperature. The process method comprises the following steps that: adding aluminum polychlorid and polyacrylamide into the seawater, and feeding into a multi-media filter; preheating the seawater to 43 DEG C, regulating the pH value to be 4.3, adding acid and feeding into a degassing tower to remove carbon dioxide and dissolved oxygen from the seawater; adding sodium hydroxide, a reducer sodium sulfite and an organosilicon defoaming agent into the seawater, and feeding into a microstrainer to remove small molecular organic matter; adding an organophosphorus corrosion and scale inhibitor into the seawater, feeding into the tube side of a preheater and heating to 72.4 DEG C, and feeding into an evaporator for evaporation; allowing the seawater at an outlet of the evaporator to flow into a first multi-effect evaporation tower to ensure that the seawater is concentrated; and allowing the seawater to flowinto a second multi-effect evaporation tower so as to further finish the concentration of the seawater, obtaining freshwater at an outlet of the sixth-effect shell side of the second multi-effect evaporation tower, condensing by using a condenser, and feeding into a product water tank. Desalted water for boilers can be obtained by the process method, the content of oxygen is less than 3ppb, the content of carbon dioxide is less than 3ppm, and the possibility of dirt growth is also reduced or inhibited in the preheating and evaporation process.

The invention discloses a thermal power plant desulphurization wastewater purification system including a desulphurization wastewater pretreatment system, a multi-medium filter, a forward osmosis-nanofiltration coupling concentration-desalination system, a multi-stage flash evaporation system and a horizontal crystallization box which are successively connected. The invention also discloses a thermal power plant desulphurization wastewater purification method including wastewater neutralizing treatment, heavy metal precipitation treatment, flocculation treatment, clarification treatment, sludge dewatering treatment, clear water filtration treatment, forward osmosis concentration treatment and multi-effect negative pressure flash evaporation crystallization. With chemical treated desulphurization wastewater as raw material, pretreated wastewater passes through the forward osmosis-nanofiltration coupling concentration-desalination system and then enters the multi-stage flash evaporation system, the flash evaporation efficiency is greatly improved, final products comprise a brick making raw material, industrial salt and distilled water, and the purpose of turning waste into treasure is achieved.

The invention discloses a treatment process for bearing production wastewater. The treatment process comprises the following steps: firstly, enabling bearing production wastewater to enter an oil-separation adjusting tank; separating floating oil in the wastewater and agitating uniformly; then lifting the wastewater into a cavitation air floatation system to remove suspension matters and petroleum in the wastewater; conveying the wastewater treated by the cavitation air floatation system into an iron-carbon micro-electrolysis reactor and carrying out a Fenton reagent and iron-carbon micro-electrolysis combined oxidation reaction to reduce chemical oxygen demand and improve the ratio value of biochemical oxygen demand / chemical oxygen demand of the wastewater; conveying the wastewater reacted in the iron-carbon micro-electrolysis reactor into a coagulation precipitation tank, adjusting the pH (Potential of Hydrogen) and carrying out a coagulation and flocculation reaction; enabling reacted liquid supernatant to flow into a middle water pond to sequentially enter a UASB (Up-flow Anaerobic Sludge Bed / Blanket) anaerobic reaction tank, a CASS (Cyclic Activated Sludge System) reaction tank and a water discharging tank and filtering by a multi-medium filter; discharging after the water reaches standards. The treatment process is simple in management and good in wastewater treatment effect; a sludge expansion problem which usually and easily occurs in a traditional active sludge method is overcome; the water can be discharged after the water quality reaches the standards and the treatment process is good for protecting the ecological environment.