495 results about "Belt filter" patented technology

The invention discloses a method and a device for harvesting water-blooming cyanobacteria. The method comprises the following steps that: A. the water-blooming cyanobacteria is enriched into algae-rich water on water surfaces of lakes, reservoirs and riverways; B. an algae sucker pump is used to suck the algae-rich water; C. the algae-rich water is conveyed to a filtering system of a caterpillar system on a ship and is filtered into algae pulp; D. the algae pulp is subject to reverse purging and then secondary filtration; and E. the algae pulp is concentrated and dehydrated into algal biscuits or algae mud through a belt filter press or a horizontal screw decanter. The device for harvesting the water-blooming cyanobacteria comprises an algae sucker, a caterpillar algae-laden water filtering device, the belt filter press and the horizontal screw decanter, wherein, the fore of the ship is provided with the algae sucker, a non-clogging pump or a membrane pump is arranged in the algae sucker, the upper end of the algae sucker is provided with an impurity prevention net, and a cover plate is provided with a hoisting ring; and the caterpillar filtering device is fixed on a main frame body, and a stainless steel foraminous conveyer is arranged below a filter screen. The method is easy to operate, saves the energy, has low cost, a simple structure and convenient use, and effectively solves the problems of harvesting, concentration and dehydration of the water-blooming cyanobacteria accumulated in the lakes, reservoirs and riverways.

The invention relates to a method for recovering and recycling silicon slice cutting waste mortar. The method is characterized by comprising the following steps of: 1, pre-treating: uniformly stirring raw mortar and water and performing solid-liquid separation by using a plate and frame type filter press; 2, recovering polyethylene glycol (PEG): adding a decoloring agent into filtered liquid, and performing plate and frame filtering; treating obtained filtrate by using ion exchange resin or a multiple-effect distiller; and performing reduced pressure distillation, rectification and fine filtering to obtain a PEG finished product; and 3, recovering silicon carbide: mixing filtered filter cakes and water according to a proportion of 1:(3-4), stirring to form mortar; separating the mortar by using a multi-stage cyclone; performing acid washing; separating by using the cyclone; filtering by using a belt filter; and drying to obtain the silicon carbide finished product. By the method, the separation amount is large, recovery rate is high, recovered PEG and silicon carbide have high quality, and the method saves energy and is environmentally-friendly.

An electrolytic filtration method and apparatus for the concentration and collection of suspended particulates from aqueous solutions is disclosed. The electrolytic cell contains at least an anode and a cathode, and in one embodiment contains a plurality of anodes and cathodes. The electrolytic cell also contains a filter, and in one embodiment the filter is a moving belt filter. While not bound by theory, the electrolytic filtration method and apparatus is based on the electrophoretic movement of algae particles suspended in an aqueous solution away from the filter under the influence of an electric field. In one embodiment the electric field is a pulsed waveform with unidirectional voltage or current pulses. In another embodiment, the electric field is a pulsed waveform with bidirectional voltage or current pulses.

The invention relates to an automatic chemical dosing jet flow mixing and water pump stirring sewage treatment system. The system comprises a batcher; wherein the upper part of the batcher is provided with a drug storage box; an automatic feeder is arranged in the drug storage box; a discharge port of the automatic feeder is communicated with the inner cavity of the batcher through a pipeline; one side of the batcher is provided with a liquid level detector; the lower part of the batcher is provided with a jet nozzle; the jet nozzle is communicated with an outflow tube of the water pump through a pipeline, an electromagnetic valve and a flowmeter; the outflow tube is connected with a sedimentation tank or a belt filter press or other sewage treatment equipment through a water valve and a pipeline; the bottom of the batcher is communicated with an inflow tube of the water pump through a pipeline and the electromagnetic valve; the inflow tube is communicated with a sewage reservoir or a sewage source. Agent preparation and sewage mixing and stirring are implemented by the water pump. The sewage treatment system has the advantages of reasonable structure, complete functions, small electricity consumption, convenient use, reliable operation and wide application range, and is particularly applicable to municipal sewage treatment and industrial wastewater treatment.

The invention relates to heavy metal contaminated soil remediation equipment. The heavy metal contaminated soil remediation equipment comprises a machine frame, a feeding hopper, grinding rollers, a ball mill, a screen sieve, a first-level rinsing pool, a linear vibrating screen, a slurry buffer pool, a slurry pump, a centrifugal machine, a deep leaching pool, a belt filter press and a second-level rinsing pool. Contaminated soil is subjected to mechanical grinding, first-level rinsing, first-level solid-liquid separation, deep leaching, second-level rinsing and second-level solid-liquid separation to be remedied. The heavy metal contaminated soil remediation equipment is advanced in process, good in treatment effect, high in working efficiency and high in automation degree.

The invention discloses a wet-type magnetic separation method of magnetite. Magnet crude ores are fed into a crusher to be subjected to coarse crushing, the crushed crude ores are fed into a vibrating screen to be screened, a sieve pore is controlled to be 35-75mm, an oversize product is fed into the crusher to be crushed, and the crushed oversize product and screen underflow are fed into a high pressure roller mill to be subjected to fine crushing; the finely crushed ores are fed into a wet-type linear vibrating screen to be screened, the oversize product returns to the high pressure roller mill to be subjected to fine crushing, the screen underflow is subjected to wet-type magnetic separation, and the magnetic field intensity is controlled to be 120-300mT; and the ores subjected to wet-type magnetic separation is fed into a high frequency vibrating fine screen, the size of a sieve pore is controlled to be 0.10-0.5mm, the oversize product is dehydrated by virtue of a vacuum belt filter and returns to the high pressure roller mill to be subjected to fine crushing, and the screen underflow is fed into a magnetic separator or a magnetic separation column to be subjected to magnetic separation, thus a concentrate product is obtained. By adopting the wet-type magnetic separation method provided by the invention, the power consumption and steel consumption are low, and the production cost is low.

The invention relates to a method for recovering silicon carbide and polyglycol cutting solution from a silicon slice cutting waste mortar. The method comprises the following steps of: stirring the mortar at normal temperature, and then performing solid-liquid separation to obtain a lower liquid stream and an upper liquid stream; putting the lower liquid stream into a belt filter to obtain cleaned silicon carbide; rinsing the silicon carbide by using alkali liquor, and driving the silicon carbide into a centrifuge; cleaning the silicon carbide through the belt filter, then rinsing the silicon carbide by using oxalic acid, and driving the silicon carbide into a three-level hydrocyclone to obtain a lower liquid stream of the silicon carbide; putting the lower liquid stream of the silicon carbide into a third belt filter; conveying the cleaned silicon carbide into a drying machine through a conveyor belt; grading the dried silicon carbide by wind force, screening large granular impurities by using a vibrating screen to ensure that the silicon carbide can be packaged; performing solid-liquid separation on the liquid part obtained after separating the mortar; adding a decolorant and a filter aid into the liquid; putting the mixture into a press filter; putting the separated liquid into an ion exchange system after the separated liquid passes through a bag filter; and dehydrating the separated liquid through an evaporator to obtain polyglycol. By the method, the pollution to the environment caused by the direct emission of the mortar is avoided, and the production cost during silicon slice cutting is effectively reduced.

The invention discloses a vacuum belt filter dewaterer. Wherein, the filter belt is adhered on the rubber belt of ripple groove that driven by the drive motor as the rubber belt to step for the same direction; the rubber belt ripple groove is connected to the vacuum room; the rubber belt is supported by two lubricative support blocks and sealed by water, while said two support blocks and rubber belt form the vacuum room; the rubber belt outside the vacuum room is aerial via the compressed air when in working to reduce the friction resistance; the filter cake is compressed and dewatered at the front of outlet to attain drier filter cake and reduce the energy for following drying; the filter screen can execute filtration after regeneration. The invention has the advantages that: it uses vacuum filtration, with large filter drive power; the filter cake is mechanically compressed with lower moisture percentage; it can automatically detect the thickness of filter cake, via which to control the speed of filter belt to confirm the uniformity of filter cake; it has lower demand for the solid content of filter liquid; and it can realize continuous operation with high automatic degree and better economic benefit.

The invention relates to a sludge dehydration treatment technology which includes the steps as follows: residual active sludge is treated for concentration sequentially in a continuous gravity concentration tank and an intermittent sludge concentration tank, then put in a chemical conditioning tank and guided into a tumbling centrifugal concentrator for further concentration after being chemically conditioned, and finally put into a belt filter press to be dehydrated to become sludge cake. The sludge dehydration treatment technology of the invention aims at the residual active sludge property characteristics to strengthen the concentration effect before mechanical dehydration and has the advantages of little addition dosage in dehydration, sludge cake chickening, low moisture content in sludge cake, easy washing of filtration fabric not stuck by sludge, low solid content in separation medium, and high solid recovery rate.

The invention discloses a sludge dewatering method used for an urban sewage plant. The method comprises the following steps of: putting original sludge of the urban sewage plant in a container, wherein the moisture content of the sludge is more than 90 percent, and stirring fully and uniformly; adding mixed coagulant aids of dolomite and quick lime into the obtained sludge and uniformly stirring; adding inorganic flocculant, stirring uniformly, adding a polyacrylamide (PAM) flocculating agent, and stirring uniformly; and feeding the obtained sludge into a plate-and-frame filter press, squeezing and dewatering the sludge, keeping pressure for 5 to 30 minutes, and decompressing and discharging. The sludge of the urban sewage plant is conditioned and flocculated further, and then is filtered, squeezed and dewatered, so that moisture in the original sludge in the sewage plant, which is not dewatered by a belt filter press, can be dewatered effectively, the treatment process of the sludge dewatering method is simple, and the sludge dewatering method is low in treatment cost.

The invention relates to a dehydration method and a dehydration device of tailings. The dehydration device mainly comprises a cyclone, a thickener, a vacuum belt filter and a sedimentation basin. A tailing slurry discharged from an ore dressing workshop go through the cyclone, the thickener and the vacuum belt filter in order to form dry materials which are placed in a stock dump. And a flocculating agent adding system is installed between the thickener and the vacuum belt filter. The sedimentation basin is connected to a collection basin used for collecting the clear water overflowing from the sedimentation basin, and then the clear water come into the ore dressing workshop for recycling. With the dehydration method and dehydration device of tailings, risks from dehydration with a tailing dam can be eliminated, so that accidents are effectively avoided. Meanwhile, the device of the invention has low investment, low running cost and high dehydration rate.

The invention relates to a treatment device for heavy metal polluted soil. The treatment device comprises a machine frame, a feeding hopper, crushing rollers, a ball grinder, a separation screen, a first-stage water washing pool, a linear vibration screen, a slurry buffering pool, a slurry pump, a centrifugal machine, a deep elution pool, a belt filter press and a second-stage water washing pool. The polluted soil is remedied through mechanical grinding, first-stage water washing, first-stage solid-liquid separation, deep elution, second-stage water washing and second-stage solid-liquid separation. The process is advanced, the treatment effect is good, the work efficiency is high, and the automation degree is high.

This invention provides a method for removing undesirable constituents from tobacco which includes extracting tobacco material in an aqueous or organic solvent and filtering the product of the extraction using a horizontal belt filter. The extract and insoluble tobacco residue may be further treated enzymically, chemically or otherwise to remove a complement of undesirable constituents. The extract and insoluble tobacco residue are recombined to form a regenerated tobacco material that is less harmful when combusted than the original material.

The invention relates to an extremely wide type breadth shortening forming cutting machine used for the length fixing and breadth fixing of formed high-density fabric of terylene and polypropylene fiber, and providing qualified cloth used for industrial filtration for a belt filter. According to the invention, the overall structure is composed of a shaft bracket, a length fixing and breadth fixing cutter, a winding device, and the like; a yardage roll is unwound on the shaft bracket freely and then enters into a length fixing and breadth fixing cutting area; a variable frequency motor actively drives to-be-cut filter cloth in the breadth fixing cutting area, and a pressure cutting wheel pneumatically controlled by hot melting of 2-3 ultrasonic waves is fixed on a horizontal guide rail according to the size of the breadth for breadth fixing cutting; a winding mechanism is controlled by the variable frequency motor, when the wound yardage roll reaches a set length, the cut filtering cloth stops operation, and is controlled to operate by a heating resistor hot melting cutter along the horizontal guide rail through the variable frequency motor, so as to conduct fixed length cutting.

The invention discloses a method for producing citric acid by carrying out slag removal and fermentation on cassava, and the method comprises the following steps: cutting the cassava into small pieces, smashing, adding water in well smashed cassava powder and mixing for preparing pulp, then liquefying the cassava powder by the continuous spray liquefaction technology, filtering liquefied solution by adopting a belt filter or a plate-and-frame filter after completing the liquefaction, leading filtrate after the filtration into a fermentation device, then adding an organic nitrogen source which accounts for 0.3-15% of the total fermentation volume for carrying out the fermentation, and finally adopting the calcium salt method for extracting the citric acid from fermentation broth. The method can not only greatly reduce the viscosity of the fermentation broth, well improve the dissolved oxygen during the fermentation process and reduce the fermentation cycle, but also increase the utilization rate of a fermentation tank and expand the production scale by increasing the initial total sugar concentration for the fermentation. The method can simultaneously solve the problem that grain resources are occupied during the production process of the citric acid.

The invention provides an electrostatic air conditioner cleaner for a central air-conditioning system and an electric discharge device arranged in the electrostatic air conditioner cleaner. The electrostatic air conditioner cleaner comprises a shell, an air inlet, an air outlet, an electric discharge assembly and an ionization dust collecting assembly, wherein the electric discharge assembly comprises an electric discharge anode assembly which is of an acicular structure and an electric discharge cathode assembly, the acicular structure is firm, can be used for improving an electric discharge voltage, can be washed without any chemical agent or a soaking process and can be directly flushed with a pressure water pistol, the electric discharge anode assembly passes through the center of the ionization dust collecting assembly and extends out of the tail end of the ionization dust collecting assembly, and the ionization dust collecting assembly consists of honeycomb six-wall type ionization dust connecting plates, thus the dust collecting space is increased and the overall size of the cleaner is reduced; and the overall performance of the cleaner is improved, and the cleaning period is prolonged. Compared with a medium-efficiency band filter, the cleaner has the advantages that the production of nondegradable solid pollutants can be reduced and the effects of environmental friendliness, energy conservation and emission reduction are achieved truly.

The invention relates to a high-effective desulfuration dedusting purification system of coal boiler flue gas, in particular to a purification equipment of industrial waste gas. The invention provides the highly effective desulfuration dedusting purification system with good desulfuration dedusting effect. The system is provided with a deduster, a draft fan, a booster fan, an absorption tower, a process water pump, a process water tank, an oxidation air blower, a hydraulic cyclone, a slurry pump, a stirrer, a recycle pump, a slurry transfer pump, a clarified water pump, a clarified water tank, a dispensing pump, a concentration groove, a water-ring vacuum pump, a belt filter press, a gas-water separator, a filtration fabric flushing pump, a filtration fabric flushing water tank, a filtrate water pump, a filtrate neutralization box, An electric butterfly valve, an electromagnetic valve, an intercepting valve, a regulating valve, a check valve, etc. The coal boiler flue gas is desulfurized and dedusted through dedusting before desulfuration, lime-spraying desulfuration, liquid absorption, air blowing oxidation, defogging purification, neutral liquid circulation, cyclone separated lime latex, gas water separation, mechanical filtration, etc., thus reaching the emission standard; the water and lye can be recycled, the invention has low cost for operating the system and no secondary pollution.

The invention relates to a technology for extracting vanadium pentoxide from stone coal vanadium ore, comprising a lime milk neutralization method acid dipping-extraction vanadium extraction technology adopting a thickener production line and a lime milk neutralization method acid dipping-extraction vanadium extraction technology adopting a belt filter production line. The first technology adopts the working procedures of raw material pulverization, ball milling, sulfuric acid leaching, five-stage thickening washing separation, overflowing lime milk neutralization, single-stage thickening solid-liquid separation, overflowing reduction, pH value adjustment, extraction, reverse extraction, vanadium-contained solution oxidation, ammonia water precipitation, pyrogenation, and the like to obtain the vanadium pentoxide finished products, and the second technology adopts the working procedures of raw material pulverization, ball milling, sulfuric acid leaching, ore pulp lime milk neutralization, filtration washing, filtrate clarification washing, pH value adjustment, extraction, reverse extraction, vanadium-contained solution oxidation, ammonia water precipitation, pyrogenation, and the like to obtain the vanadium pentoxide finished products. The invention solves the problems of above-norm tailing wastewater NH3-N existing in the prior acid dipping-extraction vanadium extraction and has the advantages of high vanadium recovery rate, low production cost, good economic benefits and environment-friendly effect, and the like.

A belt filter for effecting separation of liquid from solids where, at the collection zone, a filter belt or belts is changed shape so as to provide a supporting shape to bold liquid, which is then fed into a nipping zone. In an embodiment there is a single belt used which is folded in a middle portion to provide the supporting shape.

A method for treating impurities contained in exhaust gases of ships to reduce sulphur oxide and other emissions, includes scrubbing the exhaust gases in an exhaust gas scrubber and supplying wash water effluent exiting from the scrubber and containing impurities to a purification unit onboard a ship. In order for the method to purify wash water exiting the scrubber sufficiently enough to be discharged directly to sea, the purification unit includes a moving filter band, whereby an aqueous fluid containing impurities originating from the effluent is together with a precipitating agent fed to a surface of the inclined filter band and filtered there through to concentrate impurities onto the surface of the band filter as a precipitate. When necessary, the pH of the purified effluent is adjusted so that it is at least 6.5 before discharging the purified effluent into the sea or returning it to the exhaust gas scrubber.

The invention relates to a portable oilfield oil sludge purifying treatment and recovery device and method. The invention mainly solves the problems of large occupied area, high transportation cost and environment pollution in the existing oilfield oil sludge piled storage. The invention is characterized in that the device comprises a pretreatment tank (1), an advanced treatment tank (2), an oil water tank jimmy (3), a centrifugal machine (4) and a belt filter (5), wherein a first feed pipe (1-10) of the pretreatment tank (1) is connected with a hopper-type sludge lifter (6); the outlet of an oil collector (1-6) is connected with an oil tank in the oil water tank jimmy (3); a second discharge pipe (1-4) is connected with the advanced treatment tank (2); and the discharge port of the advanced treatment tank (2) is respectively connected with the centrifugal machine (4) and the belt filter (5) through pipelines. After the oil sludge is treated by the device and method, water can be recycled, silt can be covered on soil and returned to the field, and crude oil can be recovered, thereby thoroughly solving the problem of pollution caused by oilfield oil sludge.

The invention discloses a post-treatment process for washing, drying and calcining an SAPO (silicoaluminophosphate) molecular sieve. The process is characterized in that aiming at the production characteristics of an SAPO molecular sieve, a crystalized molecular sieve stock solution is filtered by a primary section of a belt filter, and is washed twice by secondary and tertiary sections of the belt filter, and is formed into a filter cake at the tail end of the belt filter; the filter cake is dried by using a spin flash drying device to form dried fine powder; and the dried fine powder is collected by a cloth envelope collector, and is calcined by using a rotary kiln to complete removing an organic amine template agent in a molecular sieve channel, so that the SAPO molecular sieve product with catalytic activity can be obtained. Meanwhile, high-temperature tail gas generated in calcination of the rotary kiln can be used as a heat source and returned to the spin flash drying device. The process has the characteristics of continuous operation, high automatic degree, sufficient utilization of high-temperature heat source, low comprehensive energy consumption, and no dust pollution because dust is operated in closed equipment or pipeline.

The invention relates to a method for processing onion juice by an ultrasonic-assisted biological enzymolysis technology. The method comprises the steps of crushing a raw material, carrying out filter pressing by using a belt filter press, separating the filtered juice at high speed, carrying out ultrasonic enzymolysis on filter residue, concentrating and sterilizing. According to the method, in the processing process, ultrasonic treatment and composite enzyme system enzymolysis are carried out on the filter residue, so that the processing rate is increased by 10-15%. The onion juice processed by the method is good in flavor and high in content of physiological activators, the emission of waste residue is reduced, and the production cost is greatly lowered.