41results about How to "Backwash thoroughly" patented technology

A bioreactor with internal with internal circulation and dual filters for treating sewage is composed of water distributing chamber with water distributor, bearing plate, bearing layer, fitlering layer and cyclic aerating cylinder with filter-water outlet unit. The sewage is circulating through said water distributor, cycle aerating cylinder and filter layer, and is filtered by filter layer and the filter-water outlet unit.

The invention relates to a method for liquid filtration and belongs to the field of separation. The invention aims to solve a technical problem of providing a liquid filtration method that can improve liquid filtration efficiency. The method for liquid filtration comprises the following steps: allowing raw liquid to enter a filter from a raw liquid inlet pipe of the filter to be filtered by a filter element or filter membrane and obtaining filtrate and slag liquid, wherein the filtrate is discharged from a filtrate discharge pipe, and the slag liquid is discharged from a slag liquid discharge pipe; and hermetically sealing the outlet of the slag liquid discharge pipe by using a liquid seal device and discharging the slag liquid into the liquid seal device from the slag liquid discharge pipe. The method prevents the air from entering the filter, so that the air does not undergo chemical reaction with the substances in the filter and the filtration effect is improved. The method of the invention can synchronously realize production and backwashing and avoids external power supply during backwashing. In the method of the invention, the liquid in the filter generates a concentration gradient during backwashing, so the backwashing is more complete.

The invention relates to the technical field of water treatment and particularly relates to a modularized membrane capacitance deionizer which is provided with a water inlet pipe, a water outlet pipe,a power transmission line pipe and a plurality of arrayed CDI membrane component modules, wherein the bottom of each CDI membrane component module is provided with a water inlet, the top of each CDImembrane component module is provided with a purified water outlet, the water inlets of all the CDI membrane component modules are connected to the water inlet pipe, and the water purification outletsof all the CDI membrane component modules are connected to the water outlet pipe; each CDI membrane component module comprises a plurality of electrode pairs which are sequentially stacked from top to bottom; each electrode pair is composed of an anode plate layer, an anion exchange membrane layer, a screen layer, a cation exchange membrane layer and a cathode plate layer which are sequentially stacked from top to bottom; and the centers of the anode plate layer, the anion exchange membrane layer, the screen layer, the cation exchange membrane layer and the cathode plate layer in each electrode pair are provided with through holes serving as raw water channels. The modularized membrane capacitance deionizer has a simplified structure and increases the water treatment capacity.

The invention provides an intelligent water softener and a control method thereof. The water softener comprises a water inlet pipe, a water softening pipe, a brine pipe, a water discharging pipe, a salt tank and a resin tank, the water inlet pipe, the water softening pipe and the water discharging pipe are connected with the resin tank, and the brine pipe is connected between the salt tank and theresin tank; the water inlet pipe is provided with an influent water flow sensor, an influent water quality sensor and a water inlet solenoid valve in sequence in the direction of the resin tank; thewater softening pipe is provided with a soft water solenoid valve and a soft water quality sensor in sequence in the direction of the resin tank; a bypass solenoid valve is connected between the influent water quality sensor of the water inlet pipe and the soft water quality sensor of the water softening pipe; the brine pipe is provided with a salt tank solenoid valve, a reclaimed brine quality sensor and a reclaimed brine flow meter; and the water discharging pipe is provided with a discharged water quality sensor. The water softener provided by the invention realizes instant response to change of water quality through the intelligent sensors, and makes the corresponding intelligent adjustment to the softening process, the regeneration process, the backwashing and the washing process in real time according to change of water quality.

The invention relates to a ceramic particle for adsorbing wastewater impurities. The ceramic particle comprises an inner layer and an outer layer, wherein the outer layer contains the following raw materials in parts by weight: 35-45 parts of activated aluminum oxide, 25-35 parts of calcined kaolin, 25-30 parts of anatase type titanium dioxide, 4-6 parts of glass fibers and 1-3 parts of vermiculite, and the average particle size of the raw materials of the outer layer is 50-80 microns; and the inner layer contains the following raw materials in parts by weight: 45-55 parts of common aluminum oxide, 25-35 parts of common kaolin, 15-20 parts of rutile type titanium dioxide, 3-8 parts of the quartz and 2-4 parts of preprocessed graphene, and the average particle size of the raw materials of the outer layer is 10-30 microns. The ceramic particle prepared by virtue of the invention has a double-layer structure, is capable of easily forward adsorbing the wastewater impurities, easy to backwash and desorb and low in desorption pressure and has the good desorption effect, and the water filtration efficiency is greatly improved.

The invention relates to a backwash spray nozzle for a granular filter material filter device. The backwash spray nozzle comprises a connecting head, a cylinder body, nozzles and a base plate, wherein an upper ring connected with the connecting head is arranged at one end of the cylinder body, the base plate is arranged at the other end of the cylinder body, a cone head is arranged in the base plate, and 1-3 rows of nozzles are arranged on the cylinder body; 6-18 nozzles are arranged in one row, central angles alpha between every two adjacent nozzles in each row are equal, the nozzles in different rows are arrayed in a staggered manner, and staggering angles are equal to (1 / 2)alpha. In a use process, the spray nozzle is mounted at the bottom of a filter layer, a high-speed water inlet pipe and a high-speed air inlet pipe are communicated with each other, gas-water mixed liquid is ejected at high speed in a radial manner to drive peripheral filter materials to be diffused outwards at high speed to form three-phase flow of the gas, the water and the filter materials, the gas with the least specific gravity rapidly floats to penetrate through the whole filter layer due to a buoyancy effect, the three-phase flow is transversely and longitudinally covered, the filter materials are locally collided, rubbed and stirred with one another, and the three-phase flow transmits the energy to the periphery, so as to realize the effective backwash and regeneration of the whole filter layer. The backwash spray nozzle is simple in structure and good in backwash effect and is convenient to use.

The invention provides a deep backwashing filter and a backwashing method. The invention relates to the field of oilfield sewage treatment equipment. The deep backwashing filter comprises a tank bodyand a stirrer, a lower connecting pipe is arranged at the bottom of the end socket of the tank body and connected with a water outlet pipeline, a backwashing water inlet pipeline, a compressed air pipeline and a dosing pipeline in parallel through valves, and an upper connecting pipe is connected with a water inlet pipeline and a backwashing water outlet pipeline in parallel through valves. Polyaluminium chloride and colloidal particles in the sewage are used for purification, the stirrer is used for stirring, dispersing and mixing a quartz sand filter material layer, colloidal particles attached to the surface of the quartz sand filter material and a water body break the stability and form tiny floccules, under the impact and carrying effects of bubbles formed after the compressed air isdivided by a filter cap, the floccules and the quartz sand filter material layer are separated and ascend to flow out of the tank body, chemical agents and physical stirring act on the quartz sand filter material at the same time, the backwashing regeneration strength of the quartz sand filter material is improved, backwashing is more thorough, the service life of the quartz sand filter material is prolonged, and the quality of filtered water is improved.

The invention relates to a novel fiber filter, fiber beams are arranged in a pool body, the side wall of the pool body is provided with a water inlet, a water outlet and a back wash water discharge outlet, the space at the bottom part of the pool body is provided with a water collection tank of the discharged water, the side surface of the water collection tank of the discharged water is communicated with the water outlet; an upper plate surface of the water collection tank of the discharged water is connected with at least one vertical filter unit, the center of each filter unit is a hollow support body, filtration pores are distributed on the side wall of each hollow support body, the lower port of each hollow support body is communicated with the water collection tank of the discharged water, the outer surface of each hollow support body is covered with fiber beams which are vertically and tightly arranged, the lower ends of the fiber beams are connected with a wire hanging rod, the upper ends of the fiber beams and the upper ends of the hollow support bodies are connected with a wire hanging support body via a wire hanging ring and a rope, the wire hanging support body is connected with a drive device by driving via a lifting transmission shaft; the root part of each filter unit is provided with an air distributing chamber, a back wash air sparging disc is arranged on the air distributing chamber, and the air distributing chamber is communicated with a back wash air inlet pipe. The filter has small area coverage, high filtration efficiency and thorough back wash.

The invention provides a back-flushing cutting module for a ceramic bio-filter and a three-dimensional back-flushing technology of the back-flushing cutting module. The adopted three-dimensional back-flushing technology is realized mainly by depending on the back-flushing cutting module. The back-flushing cutting module for a ceramic bio-filter comprises a cutting framework, a cutting skeleton, asecond back-flushing water inlet pipe, a second back-flushing water inlet branch pipe, a rotating shaft, a frame plate and a transmission motor, wherein the transmission motor drives the back-flushingcutting module to perform transverse filter material cutting through horizontal rotation of the rotating shaft; and the ceramic bio-filter performs longitudinal back-flushing upwards through back-flushing water which enters through a first back-flushing water inlet pipe. The three-dimensional back-flushing technology adopting three process of a 'independent gas back-flushing mode' to a 'gas-watercombined back-flushing mode' to a 'dependent water three-dimensional back-flushing mode' is provided, so that sufficient friction and movement of a filter material on a longitudinal face and a transverse face are performed, and accordingly, the bio-filter is radically prevented from blockage and caking of the filter material.

The invention relates to the technical field of filtration equipment and relates to a hydroturbine propelled microfilter. The hydroturbine propelled microfilter comprises a holder, a filter screen component, a cleaning pipe and a hydroturbine, wherein the hydroturbine is fixedly mounted on the holder; the filter screen component which is cylindrical and can be driven by the hydroturbine to rotate around own axis is mounted on the holder; a filtered water outlet is formed in the filter screen component; the cleaning pipe located above the axis of the filter screen component is arranged in the filter screen component; water outlets all capable of jetting water in the pipe to the inner wall of the filter screen component are transversely formed in the cleaning pipe at intervals. The hydroturbine propelled microfilter is reasonable and compact in structure; the hydroturbine is capable of pushing the filter screen component to rotate around the own axis, and meanwhile, a high-pressure fluid can be input into the cleaning pipe; as a result, water returned by the hydroturbine can be effectively utilized and the utilization rate of the high-pressure water source for driving the hydroturbine is improved; besides, back washing can be completed at the same time of filtering; the filtering efficiency is high, the back washing is thorough and blockage can be avoided.

The invention relates to a backwash spray nozzle for a granular filter material filter device. The backwash spray nozzle comprises a connecting head, a cylinder body, nozzles and a base plate, wherein an upper ring connected with the connecting head is arranged at one end of the cylinder body, the base plate is arranged at the other end of the cylinder body, a cone head is arranged in the base plate, and 1-3 rows of nozzles are arranged on the cylinder body; 6-18 nozzles are arranged in one row, central angles alpha between every two adjacent nozzles in each row are equal, the nozzles in different rows are arrayed in a staggered manner, and staggering angles are equal to (1 / 2)alpha. In a use process, the spray nozzle is mounted at the bottom of a filter layer, a high-speed water inlet pipe and a high-speed air inlet pipe are communicated with each other, gas-water mixed liquid is ejected at high speed in a radial manner to drive peripheral filter materials to be diffused outwards at high speed to form three-phase flow of the gas, the water and the filter materials, the gas with the least specific gravity rapidly floats to penetrate through the whole filter layer due to a buoyancy effect, the three-phase flow is transversely and longitudinally covered, the filter materials are locally collided, rubbed and stirred with one another, and the three-phase flow transmits the energy to the periphery, so as to realize the effective backwash and regeneration of the whole filter layer. The backwash spray nozzle is simple in structure and good in backwash effect and is convenient to use.

A bioreactor with internal with internal circulation and dual filters for treating sewage is composed of water distributing chamber with water distributor, bearing plate, bearing layer, fitlering layer and cyclic aerating cylinder with filter-water outlet unit. The sewage is circulating through said water distributor, cycle aerating cylinder and filter layer, and is filtered by filter layer and the filter-water outlet unit.

The invention discloses rainwater comprehensive treatment integrated equipment. The rainwater comprehensive treatment integrated equipment comprises a vertical tank, wherein the inner part of the tank is a closed space, the bottom space of the tank is a water distribution chamber, a heavy type light filter material is filled in the lower space of the tank and is located above the water distribution chamber, the upper space of the tank is a clear water chamber for containing filtered water, an automatic chlorine adding and pH value adjusting device is arranged in the clear water chamber, a water inlet and a sewage draining outlet are formed in the wall of the water distribution chamber of the tank, and a water outlet is formed in the wall of the clear water chamber of the tank. The rainwater comprehensive treatment integrated equipment has the advantages that the heavy type light filter material has good filtration and absorption effects on impurities in rainwater so as to ensure the quality of yielding water; the weight of the equipment can be reduced, and the equipment is suitable for occasions having requirements on bearing and is also convenient to transport and install; as the automatic chlorine adding and pH value adjusting device is arranged in the tank, an external chlorine adding disinfection system and a Ph value adjusting system are omitted, treatment technological processes are simplified, and the equipment is convenient to maintain; rainwater treatment processes are integrated in the integrated equipment, and the rainwater comprehensive treatment integrated equipment is simple in structure, low in cost and convenient to manage and maintain and occupies a small area.

The invention provides a spiral-flow type water cap, which comprises a conical water cap body and a center water pipe. The spiral-flow type water cap is characterized in that a plurality of water outlets inclined in the vertical direction are formed in the conical water cap body; the center water pipe is arranged in the conical water cap body; a water passing opening is formed in the center water pipe; the plurality of water openings inclined in the vertical direction and the center water pipe form a water spiral flow passage. The conical water cap body and the center water pipe are integrally formed by plastics. The spiral-flow type water cap has the advantages that the structure is reasonable; the filtering efficiency is high; the reverse flushing effect is good; the service life is long, and the like.

The invention discloses a backwashing method of a filter, which solves a problem of low backwashing efficiency of traditional filters, a specific method is that a whirl cavity, a water collection cavity, a filtering medium collection and transfer cavity and a discharge cavity are all installed in the filter, so that a mixed liquor generates a strong centrifugal separation acting force after passing through the whirl cavity, the acting force results in not only applying a rubbing force on the filtering medium, but also effectively separating the filtering medium from oil and suspending impurities through their channels, namely, the oil and the suspending impurities are discharged from a tank via the water collection cavity, the washed filtering medium is sequentially returned back to the tank via the collection and transfer cavity and the discharge cavity, repeating in this cycle, the filtering medium can be completely washed; the invention also provides a device capable of implementing the method.

The invention belongs to the technical field of sewage treatment equipment for environmental engineering and municipal engineering, and particularly relates to a patent application of a gravity flow denitrification filter. The filter specifically comprises a filter body, a water distribution system arranged at the upper part in the filter body, a filter system arranged at the lower part in the filter body, and a drain pipe positioned at the bottom of the filter body and used for draining treated water; the water distribution system comprises a water distribution main pipe and water distribution branch pipes extending downwards on the water distribution main pipe. The filter system comprises a filter material layer which is positioned above a filter plate and consists of a filter material, and filter heads arranged on the filter plate; the filter heads are uniformly distributed on the filter plate and consist of umbrella-shaped filter caps with filter holes and hollow filter rods which penetrate through the filter plate and are arranged below the filter caps; and the filter material is naturally laid. By improving the water inlet and distribution system of the denitrification filter, the anoxic environment of denitrification nitrogen removal is effectively guaranteed, carbon source waste is reduced, and the operation cost is saved.