99results about How to "Extend the filter cycle" patented technology

The invention relates to a method and a device for retarding membrane pollution in membrane water treatment. A shell with a membrane component is filled with a certain quantity of active carbon particles with certain particle size. In order to ensure the effect, the shell needs to be vertically installed; the volume of the active carbon particles accounts for about 30%-60% of that of a gap of the shell; the active carbon particles are fluidized in the shell of the membrane component through power of a circulating pump; the membrane surface is scrubbed continuously, so that pollutants are prevented from forming a filter cake layer on the membrane surface; the resistance of a filter cake layer of the membrane is retarded; dissolved organic matters in water are partially adsorbed by virtue of the adsorption capacity of the active carbon particles; blockage for membrane pores is retarded; and the blocking resistance of the membrane pores is retarded. The device comprises a filter shell and the membrane component; the shell is filled with a certain quantity of active carbon particles; a circulating pump is arranged on the shell and used for providing power for fluidization of the active carbon particles, so that the membrane surface is effectively scrubbed, the filter cycle of the membrane is prolonged and the operation cost is lowered further.

The invention discloses a method of double-deck making water filter device and modified filtering material, wherein the double-deck making water filter device contains water disposal reactor (1) and filtering material (2) in the water disposal reactor (1); the modified filtering material is made of modified agent on the quartz sand or ceramicite. The method comprises the following steps: mixing one kind or more of ferric nitrate, aluminum chloride and manganese chloride salt solution; adding NaOH to prepare the modified filtering material; or mixing one or more of Fe2O3, Al2O3 and neo-ecological manganese dioxide powder; adding carrier to stir or oscillate to prepare the modified filtering material. The invention can remove impurity, organics and heavy metal in the water, which reduces the cost.

The invention discloses a recycling method of circulated cooling water of industrial wastewater with carbinol, which comprises the following steps: adopting hydrolytic adjusting pond; proceeding microbe contacting to oxidize; proceeding aerobic biological contact to oxidize; concreting; sedimenting; filtering through active charcoal; sterilizing through UV; adopting elastic cubic fill and microhole aerating system as fill of biological contact oxidizing course; decomposing organism with DO under 0.5-1. 0mg/l; removing CODcr, suspension and organism effectively.

The invention discloses an integrated reuse equipment for bathing waste water treatment in hotel and the method. The equipment comprises tube mixer, metering pump, hair filter, drug groove, fiber ball filter, ultra-filtration membrane module, ClO2 disinfection groove, storage vessel, security filter core and pressure pump. Bathing waste water generated in hotel is collected and filtered by new micro-flocculation fiber of polyester high elastic yarn. After outputting water achieves the demand of <<water quality of urban miscellaneous water reused in city>> (GB/T 18920-2002), it can return in hotel to flushing in toilet, greening and so on. Residual ultra-filtration outputting water is carried with disinfection treatment by nanometer filter film device and. After outputting water achieves the demand of <<health standard of living and drinking water>> (GB5749-85), it can return in hotel for washing, bathing and so on where the water quality is demanded higher. The process and relative equipment is provided with simple flow, easy operation and management. It is very suitable for reclaimed water reuse in hotel.

The invention discloses a novel graded gas filtering device and belongs to the technical fields of medical equipment and health care. The novel graded gas filtering device comprises a shell part and a filtering part; the shell part comprises an upper cover and a lower shell. The upper shell and the lower shell are in firm and sealed connection; the filtering part is used for filtering by grades according to the sizes of object particles in gas and is mounted and fixed on a convex ring of the upper cover. The upper cover is mainly combined with the filtering part, so that the aim of fixing components of the filtering part is realized, and the filtering part and the upper cover have very good firmness and sealing property after being mounted; the shell part is mainly used for protecting the filtering part and risk of damaging the filtering part is avoided. The novel graded gas filtering device disclosed by the invention can be used for filtering gas discharged in a laparoscopic surgery and a surgery environment of a medical establishment is effectively protected from pollution, so that the physical and psychological health of medical personnel and patients is guaranteed; meanwhile, the novel graded gas filtering device has the advantages of simple structure, convenience for operation, high gas filtering efficiency, safety and cleanliness and the like.

The invention relates to a segregating unit, which is a filter with a rotatable fibre strainer, comprising water inlet/ water outlet, air inlet/air outlet and water distribution/water out unit mounted on the tank, air distributing device mounted in the tank, and fibre strainer connected fixedly with the fixed pore plate and moving pore plate and mounted between thereof in the tank. The method is characterized in that: a support guide tube is mounted at the center of the tank and two ends thereof are securely connected with the water distribution/water out unit, a conduit which hitches on the support guide tube and is a helical pair therewith, the moving pore plate which is securely connected with the round plate is securely connected with the conduit, and rotatable fibre strainer composed of plurality of swirl vanes is mounted between the conduit and the round plate. The device has a simple structure, operates and maintains conveniently, and easily realizes large-scale equipment. The device has an advantage of a high filtrating precision, a big area, a large pollution-cutting capability, a long filtrating cycle, a big water-making, a excellent filtrating quality, a and reliable property.

The invention which belongs to the technical field of drinking water treatment especially relates to a method for reinforcing the coacervation algae removal and controlling the release of intracellular substances in the process of high algae water treatment. The invention which aims at the eutrophication pollution of surface water sources of lakes, reservoirs and the like provides a method for improving the algae cell removal effect of technologies of coagulation, deposition and filtration of a water work with the combined action of potassium permanganate and a ferric salt, wherein the appropriate oxidation effect of potassium permanganate inactivates and inhibits the activity of algae cells and controls the release of intracellular metabolites, and In situ MnO2 which is in situ generatedthrough a reduction reaction of potassium permanganate deposits on the surface of the algae cells to improve the settlement performance of the algae cells; and the electrical neutralization of the ferric salt allows the potential of the surface of the algae cells to be improved, and In situ Fe(OH)3 which is in situ generated through a hydrolysis reaction of the ferric salt deposits on the surfaceof the algae cells to improve the potential and the settlement performance of the surface of the algae cells. The method of the invention which is mainly applied to the purification in the drinking water work can also be applied to landscape water treatment which aims at the landscape water reuse and the water source pretreatment of the eutrophication water to inhibit the growth of the algae cells.

A processing system and a processing method for purifying a sewerage sludge filtrate includes (1) airing and precipitating the filtrate in a sedimentation basin; (2) conveying the filtrate after the precipitation to an air stripping tower to remove the ammonia nitrogen; (3) conveying the filtrate from the air stripping tower to a balancing tank to regulate a pH value; (4) conveying the filtrate to a sequencing batch activated sludge reaction tank to implement an aerobic microbial treatment firstly and an anaerobic microorganism treatment secondly; (5) filtering, absorbing and purifying the filtrate by a haydite filter pot discharged from a draining device; (6) implementing a film treatment to the filtrate after the filtration of the haydite filter pot by a hollow hyperfiltration device. The advantage of the invention is that the filtrate may reach a firstlevel B standard of the sewage discharge standard > after the above technical scheme, and the system has a high efficiency.

The invention discloses a butterfly high-efficiency self-adaptive plastic-fiber mixed filter material filter. The filter consists of filter material monomers, wherein each filter material monomer is formed by connecting a weight-balancing core body and paired corrosion-resistant balancing filtering wing bodies in a matching way; the surface of the weight-balancing core body is made of plastic; the weight-balancing core body is ellipsoidal; the threshold of the average density p0 of the weight-balancing core body is between 1.30 and 1.50 g/cm<3>; the two ends of a long axis of the ellipsoidal weight-balancing core body are provided with balancing wing bodies respectively; each balancing wing body is made from fiber bundles consisting of artificial fiber yarns; and the inner ends of the artificial fiber yarns constituting each fiber bundle are fixedly connected to each end of the long axis of the weight-balancing core body and the other ends of the artificial fiber yarns are in a diffused state so as to form a whisker form. The filter has the technical advantages of high porosity, high filtering speed, high filtering accuracy, low resistance, high filth holding capacity, small backwashing water using amount, high periodic water yield, low operating cost, small floor area and high anti-load impact capacity.

An integrated precipitation filtration process couples precipitation and a cloth media disk filter process into treatment structures. A microfiltration cloth filter plate is added below an effluent weir in a horizontal flow sedimentation process for filtering outlet water, so as to realize synchronized water outlet of the effluent weir and the microfiltration cloth filter plate, and integrated precipitation filtration process. After entering the equipment, raw water is uniformly distributed by a water distribution zone, and precipitated in a precipitation zone. After precipitation, the water is sent out respectively by the effluent weir and the microfiltration cloth filter plate, so as to realize solid-liquid separation. After a period of operation, when the microfiltration cloth filter plate is blocked, backwashing startup conditions are met; and when the backwashing procedure begins, a backwashing trolley and a backwashing pump are started at the same time to carry out backwashing on the microfiltration cloth filter plate. The process provided by the invention increases removal rate of solid particles having sink speed lower than that of the surface load of the sedimentation tank, and has better effect than a traditional precipitation process. The process couples precipitation and filtration and reduces land occupation; the precipitation process is helpful to delay pollution process on the microfiltration cloth filter plate; and filtering by the microfiltration cloth filter plate can improve treatment effect.

The invention relates to a method for simultaneously removing insoluble organic matter, total cyanogen and total nitrogen in wastewater of an industrial park. The method comprises the following steps: wastewater enters a high-efficiency coagulated decyanation reactor to remove total cyanogen in the wastewater removed from the coagulated decyanation reaction; effluent from the coagulating reaction enters an aeration biofilter, ammonia and nitrogen in the wastewater is oxidized into nitrate nitrogen or nitrite nitrogen, and partial organic matters are oxidized and removed; effluent from the aeration biofilter flows into a denitrification filter tank, and nitrate nitrogen and nitrite nitrogen in the wastewater are denitrified into nitrogen and removed; effluent from the denitrification filter tank is filtered in a V-shaped filter tank and then enters an ozone catalytic oxidation tank, and insoluble organic matters are oxidized into small-molecular organic matters or mineralized in the presence of a catalyst. The method can be used for oxidizing and degrading organic matters while removing total cyanogen and total nitrogen in the wastewater to ensure that treated effluent can be emitted in standard, thus having an excellent market prospect.

The invention discloses a purification method of starch sugar. The purification method comprises the following steps: (1) coating a compound precoat layer on a filter candle of a candle filter, wherein the compound precoat layer consists of cellulose and diatomite; (2) adding diatomite into a starch sugar solution, performing stirring for 30min, and then introducing the mixture into the filter candle from a liquid inlet of the candle filter to ensure that insoluble impurities in the starch sugar solution are intercepted and adsorbed, and a filtrate is obtained from a liquid outlet of the candle filter; and (3) decolorizing and refining the filtrate through an ion exchange resin system to obtain purified starch sugar, wherein the ion exchange resin system is formed by connecting a weak base anion resin column, a strong acid cation resin column and a weak base anion resin column in series. Compared with a conventional process, the starch sugar obtained by the method provided by the invention has a lower content of the insoluble particles, a lower chroma and a higher brightness, the cycle use of a decoloring assistant is achieved, the process is simplified, and the discharge of solid wastes and the generation of wastewater in a filtration process are reduced, so that the preparation method is beneficial for reduction of product production cost and environmental protection.

The invention relates to a filter and algae removal method by micro flocculation-terylene high elater fiber balls and equipment thereof. The method comprises: (1) the water to be treated and the flocculant which is added by a wriggle pump are mixed in an inflow pipeline in front of a fiber ball filter column, the water after mixing enters the fiber ball filter column, the filler of the filter column is terylene high elater fiber ball filter material, and the fiber ball filter column carries out reverse washing of low intensity at the end of the filter period; the equipment comprises an original water tank, a water storage tank and a drug adding groove, the original water tank is communicated with a pipeline mixer through a valve flow meter by a lift pump; the drug adding groove is communicated with the pipeline mixer by the wriggle pump, and a stirrer is installed in the drug adding groove; the apopore of the pipeline mixer sends the water to the water storage tank by the fiber ball filter column, and the terylene high elater fiber ball filter material is installed at the middle part of the filter ball filter column. By the terylene high elater fiber ball filter material with the characters of high porosity, large specific surface area, fast filter speed and strong pollutant stopping ability and long filter period, the effect on removing algae and turbidity substances in water is very obvious.

The invention discloses a small rapid filter equipped with an air and water backwash system. The small rapid filter comprises a filter body and is characterized in that the filter body is provided with a filter material layer, and the bottom of the filter material layer is provided with air and water distribution pipes which are also used as water collecting devices and water and air distribution devices for air and water backwashing; and the top and side wall of each water and air distribution pipe are provided with backwashing air holes, and each pipe bottom is provided with backwashing water holes. From the bottom to the top, the bottom of the filter is respectively provided with a lower supporting layer, water and air distribution pipes, an upper supporting layer and a filter material layer. One side of the filter is communicated with an intake canal, and the other side is communicated with the a water and air distribution chamber through the water and air distribution pipes; one end of the intake canal is provided with a water inlet pipe, and the other end is provided with a backwashing drainage pipe; and one end of the water and air distribution chamber is provided with a backwashing air pipe and a backwashing water pipe, and the other end is provided with a water outlet pipe. In operation, the fast filter reaches a filtration rate of 8 m/h, filtration period of 24-48 h, and water treatment amount of 700 m<3>/d. According to water supply demand, multi-group fast filters can be arranged for parallel operation, and the capacity expanding is convenient with basically no building work amount.

The invention provides a filtering device, a sewage filtering system, and a sewage filtering technology, and belongs to the technical field of sewage treatment. The filtering device comprises filter tubes, magnetic rings and a water collecting tube, every filter tube comprises an outer screen tube, an inner screen tube and magnetic particles, and the magnetic rings can move along the length direction of the outer screen tubes in order to drive the magnetic particles to wriggle; and the water collecting tube communicates with the bottoms of the inner screen tubes to discharge filtered water. The filtering device can achieve rapid sludge formation, reduce the compactness of a sludge cake layer, increase the water permeability of the sludge layer, prolong the filtration cycle of a micro-screen dynamic membrane and improve the outlet water quality of the dynamic membrane. The sewage filtering system comprises a membrane tank, a gas supply device, a lifting device and the filtering device. The system has the advantages of the filtering device, the sewage filtering technology adopts the filtering system, and can effectively improve the sewage treatment effect through a membrane forming process, a filtering process and an aeration desliming process.

The invention discloses an adjustable composite dynamic filtering device. The device comprises a tank body, the middle part of the tank body is filled with a filter material layer, the upper part of the tank body is provided with a water inlet, the bottom of the tank body is provided with a water outlet, the filter material layer comprises a top fluidized bed layer and a lower fixed bed layer, andthe thickness and/or height of the fluidized bed layer is adjustable; a backwashing drain pipe is vertically mounted in the tank body, and a solid-liquid separator located in the tank body is mountedat the top of the backwashing drain pipe; a water inlet branch pipe is arranged at the water inlet, and the tail end of the water inlet branch pipe is connected to the middle part of the backwashingdrain pipe; and the water inlet corresponds to the fluidized bed layer, and is tangent to the tank body. According to the invention, large particles in inflow water can be adsorbed in the fluidized filter material layer, and fine particle pollutants in the inflow water can go deep into the lower filter bed, and in addition, the filter material with a large active catalyst medium specific surface area increases the dirt holding capacity of the filter material layer and prolongs the filtering period of the filter.

The invention relates to a homogeneous particle filter material reverse granularity rapid filter which is communicated with a to-be-filtered water inlet pipe and a backwashing water inlet pipe, the rapid filter is sequentially provided with a water distribution chamber, a water distribution system, an under layer, a particle filter material layer, a backwashing water trough and a filtered water collection trough from bottom to top, wherein one end of the filtered water collection trough is provided with a clear water channel, the filtered water collection trough is communicated with the clear water channel, a drainage channel is arranged under the clear water channel, the backwashing water trough is communicated with the drainage channel, and the to-be-filtered water inlet pipe and the backwashing water inlet pipe are communicated with the water distribution chamber to ensure that to-be-filtered water enters from the bottom of the filter; and the filtering material layer thickens from top to bottom and has little resistance and more intercepted suspended matters. Compared with the downward flow positive granularity filter on the same scale, the rapid filter has the advantages of being capable of improving water yield by about 40 percent and saving investment by 30-40 percent, correspondingly reducing volume and obtaining remarkable economic benefit.

The invention discloses a turbid matter and dirt removal water quality purification device for underground water. The turbid matter and dirt removal water quality purification device is characterizedby comprising an outer tube, an inner tube, a mixing unit, a flocculation unit, a filtering unit, an aeration unit and a water collection unit, wherein the outer tube is a sealed tube body; the innertube is arranged in the outer tube in a suspended way through an insertion and connection opening formed in the top of the outer tube; the top of the inner tube is sealed; the filtering water flow realizes the circulation with the inside of the outer tube through the bottom of the inner tube; a first automatic exhaust valve is arranged on the top of the inner tube; a second automatic exhaust valveis arranged on the top of the outer tube. The structural design has the advantages that the turbid matter and dirt removal can be realized without great height differences; the problem of elevation arrangement difficulty is solved. The device can realize the multifunction of mixing, flocculation, filtering, aeration, reverse flushing and the like; the problems of great occupied area, elevation arrangement difficulty and pipeline connection complexity of a conventional turbid matter and dirt removal facility are also solved.