47results about How to "To achieve the purpose of purifying sewage" patented technology

The invention discloses an integrated rainwater system for a sponge city and a construction method of the rainwater system. The rainwater system comprises a middle green belt and water storage tanks, wherein the middle green belt comprises a vegetation planting area and a rainwater infiltration area; a concrete course is arranged at the lower end of the rainwater infiltration area; a rainwater pipe is arranged at the lower end of the concrete course, and the rainwater pipe is connected to the water storage tanks; water pumping pipes are connected from the interiors of the water storage tanks; bidirectional nozzles are arranged at the other ends of the water pumping pipes; and water pumps are connected to the water pumping pipes. In accordance with the shortcomings of the prior art and the characteristics of the sponge city, the rainwater system, which integrates water seepage, water storage, water purification and utilization, is designed, and the construction method of the rainwater system is correspondingly designed; by promoting the water seepage with the adoption of vegetation, the problem of road water-logging is solved through slow discharge and controlled release; and in addition, some impurities in the rainwater are separated on the basis of the purification capacity of the vegetation, and the rainwater is stored in the water storage tanks and is used for spraying roads and watering the vegetation in dry season, so that adverse effect caused by drought and flood seasons can be effectively relieved.

The invention provides a preparation method of nano titanium dioxide thin film materials loaded on the surface of a ceramic body. The preparation method comprises the following steps of: adding the organic titanium salt to the de-ionized water and stirring the de-ionized water and adding alkali liquor to adjust the pH value to be 6 to 8; centrifuging for separating the mixed solution, and adding the separated slurry to the mixed solution of absolute ethyl alcohol and acetylacetone; adding the dispersing agent to the mixed solution, sufficiently and uniformly stirring the mixed solution till the stable titanium dioxide sol is formed; soaking the high-temperature resistance and corrosion resistance ceramic body into the titanium dioxide sol, drying and forging the ceramic body for 2 to 4 hours to form one layer of nano titanium dioxide thin film material on the surface of the ceramic body. The thin film is distributed uniformly, and the thickness of the thin film is controllable. When being applied to treating the industrial waste water, the ceramic body loaded with nano titanium dioxide thin film can be utilized repeatedly and has low cost and no secondary pollution.

The invention relates to the technical field of preparation of sewage treatment agents, in particular to a solid waste-based porous sewage treatment agent as well as a preparation method and application thereof. The solid waste-based porous sewage treatment agent is prepared from the following raw materials in parts by weight: 20 to 60 parts of red mud, 30 to 50 parts of mineral powder, 10 to 30 parts of fly ash, 10 to 30 parts of steel slag, 8 to 10 parts of zeolite, 6-8 parts of a foaming agent, 4-6 parts of an excitant and 6-8 parts of a foam stabilizer. According to the technical scheme, the red mud, the mineral powder, the coal ash and the steel slag serve as main raw materials, the solid waste utilization rate is high, the manufacturing process is simple, the cost is low, and the prepared sewage treatment agent is high in pollutant removal rate.

The invention provides a sewage treatment system and method based on a mriophyllum elatinoides biological oxidation pond. The system comprises an anaerobic acidification regulation pool, an efficientmriophyllum elatinoides biological oxidation pond and a mriophyllum elatinoides aquatic organism pond which are sequentially communicated with each other, wherein the anaerobic acidification regulation pool serves as a sewage pretreatment stage and is used for equalizing the water quantity and quality; the efficient mriophyllum elatinoides biological oxidation pond serves as a secondary sewage treatment stage and is mainly used for removing organic pollutants, ammonia nitrogen and phosphorus; and the mriophyllum elatinoides aquatic organism pond serves as a tertiary sewage treatment stage, andis used for further removing organic pollutants, ammonia nitrogen and phosphorus and carrying out advanced sewage treatment and multistory cropping and breeding. The system and method provided by theinvention has the advantage that through the multi-stage treatment and reasonable configuration and sufficient utilization of animals and plants, the sewage treatment efficiency and quality can be improved.

The invention discloses nanometer magnetic iron oxide and a preparation method and application thereof. The method comprises the following steps of: uniformly mixing FeCl3, FeCl2 and a pH value mutagen in a solvent for reaction, and thus obtaining the iron oxide after the reaction. According to the method, an adsorbent can be quickly prepared at normal temperature under a high-speed stirring condition by a method for quickly changing the pH value of the prepared liquor by using 25 percent ammonia water. An arsenic adsorbent prepared by the method has a series of advantages of simple preparation process, low cost, high adsorption quantity, high adsorption speed, low influences of aqueous environments, recycling simplicity and the like which contribute to industrial application.

The invention relates to the field of sewage treatment and aims to provide a spheroidal composite adsorbent for sewage treatment. The spheroidal composite adsorbent is prepared from 8-10 parts of lignin, 6-9 parts of sulfydryl modified polyacrylamide, 2-3 parts of sodium alginate, 30-40 parts of sulfydryl modified quartz sand and 20-30 parts of sepiolite. The spheroidal composite adsorbent has thefunctions of adsorbing and removing organic matter, suspended matter and heavy metals in sewage, and has the good removal effect on the heavy metals in the acidic sewage and has the integrated effectof adsorption, flocculation and sedimentation, the contents of COD, SS, lead, cadmium, copper and mercury in treated river channel sewage all reach the stipulations of national standard surface waterenvironmental quality standard GB3838-2002 of the People's Republic of China, and the removal rate of heavy metals in acid heavy-metal heavily polluted wastewater reaches 99% or above.

The invention discloses a chemical sewage filtering method. A rotatable filter element is fixedly suspended in a barrel body of a sewage filter barrel, the water inlet speed and the water outlet speedof the sewage filter barrel are monitored and set, so that the volume flow of inlet water and outlet water can be controlled, and the best combination values can be reached. In the process, a motor drives the filter element to work in turns in two working modes including vary acceleration and stable rotation, the rotation cycle length of varying rotation is far smaller than that of stable rotation, two pieces of inner filter cotton are adopted at the bottom of the barrel body of the sewage filter barrel, detachable trapezoid inner bottoms arranged oppositely form a drain port, and secondary absorption and filtration of sewage are finished. The method has the benefits as follows: the chemical sewage filtering device adopts a support mechanism and a filter mechanism, cleaning of a drain pipe is facilitated, filtered dirt can be prevented from blocking the drain pipe, purified water can be prevented from being polluted again, thoroughness of sewage tretament can be guaranteed, and the device is simple in structure and convenient to use.

The invention discloses a flotation swirl coupling and separation method for oily sewage, which utilizes the special stirring function of the vortex pump to make the vortex pump absorb water (oily sewage) while sucking air, stir and mix the sewage and gas, and pressurize to ≥ 0.20MPa, and then pumped into the deoiling cyclone with a special structure. Due to the sudden drop in pressure, a large number of fine air bubbles are released quickly. In the centrifugal force field of the swirl, the air bubbles and tiny oil droplets automatically adhere to the Together; since the density of oil droplets and air bubble adherents is much lower than that of the oil phase, this increases the density difference between the oil phase and the water phase, which makes it impossible to use ordinary deoiling cyclones. The separated tiny oil droplets can be separated by a flotation cyclone combination device, and the purification rate can reach more than 99%. The method of the invention can be widely applied to the liquid / liquid separation of oily sewage, saturated water with oil and other heterogeneous systems in the fields of oil refining and chemical industry.

The invention relates to a processing method and a system of rinsing waster water in a printed circuit board. The method carries out the solid-liquid separation of the rinsing waste water, filters the waste water to control the particles in the waste water not to be larger than 30 micron and then filters the waste water to set discharge standard through a SiC porous ceramic filter leaf. The system comprises a solid-liquid separating device, a preliminary filtering unit and a depth-type filtering unit. The preliminary filtering unit uses a filtering net or a high molecular film to be a filtering element; the depth-type filtering unit comprises a multilevel filtering unit that uses the SiC porous ceramic filter leaf as the filtering element. The set level of the filtering unit causes drained water after filtering to meet the set standard. The invention adopts the physical filter and adsorption instead of the chemical reaction, thus having remarkable absorption and filter effect of heavy metal ions without introducing other substances. With low cost, little energy consumption, simple operation, small occupied area and wide application scppe, the invention has the good application outlook and the remarkable social benefits.

The invention discloses a chemical sewage filtering device. The device comprises a support mechanism, wherein the support mechanism comprises a sewage filter barrel and a sewage inlet pipe, a detachable drain pipe and three groups of supports are arranged at the lower end of the sewage filter barrel, a casing pipe is movably mounted on the detachable drain pipe, a threaded ring is arranged in a position, close to the casing pipe, of the detachable drain pipe, a valve is movably mounted in a position, close to the lower end, of the detachable drain pipe, a backwashing water pipe is fixedly mounted in a position, close to the upper end, of the sewage filter barrel, and a purified water drain pipe is arranged in a position, located below the backwashing water pipe, of the sewage filter barrel. To sum up, the device has the benefits as follows: the chemical sewage filtering device adopts a support mechanism and a filter mechanism, cleaning of a drain pipe is facilitated, filtered dirt canbe prevented from blocking the drain pipe, purified water can be prevented from being polluted again, thoroughness of sewage tretament can be guaranteed, and the device is simple in structure and convenient to use.

The invention discloses a lung-type aeration sponge beneficial for improving the aeration efficiency in a sewage treatment technology.The sponge is prepared by foaming fluorocarbon resin powder and a sponge, wherein the weight percentage of the fluorocarbon resin powder is 1%-60%.An aeration technology which is widely applied in an existing sewage treatment technology can be replaced, the bubble-free aeration effect is achieved, the oxygen utilization rate is increased by 2-3 times compared with a traditional method, and therefore the oxygen content in sewage can be increased to 30%-90% from original 5%-30%; the sewage is simply blended with returned sludge and returned water in an anaerobic tank and then enters a three-dimensional micro-oxygen aeration tank, and the purpose of purifying the sewage is achieved through an aerobic reaction, an anaerobic reaction and an facultative anaerobic reaction of special carriers and immobilized microorganisms.Aeration in the aeration tank is performed quantificationally and timely, therefore, energy sources needed by aeration can be greatly saved, and the purposes of energy conversation and high efficiency are achieved.

The invention relates to a method for treating waste water by using cyclic regeneration porous hollow aluminum oxide nano fiber. The method comprises the following steps: dipping porous hollow aluminum oxide nano fiber into dye waste water, stirring and adsorbing for 5 to 120 min so as to obtain porous hollow aluminum oxide nano fiber with dye absorbed, and then carrying out calcination and desorbing dye molecules for recycling utilization, wherein the mass ratio of the porous hollow aluminum oxide nano fiber and dye is 80:3 to 160:1. The method for treating wastewater, provided by the invention, is simple in process, low in cost, can be cyclically utilized, and has positive effects to renewable utilization of resources and environment protection.

The invention discloses a small sewage purification treatment device. The device comprises an outer frame, and a disinfection fixing frame is fixedly connected to the bottom outside the left side of the outer frame; the right side of an ozone storage tank is communicated with a supercharger, the supercharger is communicated with a communicating pipe through a high-pressure-resisting pipe, and thecommunicating pipe penetrates through the outer wall of the left side of the outer frame; the end, located in the outer frame, of the communicating pipe is communicated with a vent pipe, and a movabledevice is fixedly connected to one side of the inner wall of a left fixing frame; a second filtering plate is fixedly connected to the right side of the movable device, and a vibration device is fixedly connected to the bottom of a right supporting plate. The invention relates to the technical field of sewage treatment machines. The small sewage purification treatment device solves the problems that a filter of an existing water purification device is easy to block, and the water purification effect of a water purification agent is poor, the purposes of preventing the device from being blocked by precipitate and accelerating filtration are achieved, and the sewage treatment efficiency and the sewage treatment quality are improved by purifying sewage with ozone.

The invention discloses an integrated domestic sewage treatment system applicable to villages. The integrated domestic sewage treatment system comprises a solid-liquid feed separation unit, wherein afeed inlet is formed in the solid-liquid feed separation unit; the solid-liquid feed separation unit is connected with a sewage inlet pipeline; an anaerobic treatment unit is arranged at a corresponding position of the lower part of one side of the solid-liquid feed separation unit; a water inlet end of the anaerobic treatment unit is connected with a water outlet end of the solid-liquid feed separation unit; a vertical subsurface flow type constructed wetland and a horizontal subsurface flow type constructed wetland are arranged right above the anaerobic treatment unit; a water outlet end ofthe anaerobic treatment unit is connected with a water inlet end of the vertical subsurface flow type constructed wetland through a pipeline and a suction device arranged on the pipeline; and the water outlet end of the vertical subsurface flow type constructed wetland is connected with a water inlet end of the horizontal subsurface flow type constructed wetland. The invention also discloses a domestic sewage treatment method applicable to villages. The system and the method provided by the invention have the advantage that sewage treatment quality can be improved.

The invention discloses a unit-type bionic oxygen-carrying technological sewage purification device. The device comprises a vertical aeration pipe, wherein an aeration device is arranged at the lower part inside the vertical aeration pipe; an oxygen-carrying carrier is arranged inside the vertical aeration pipe above the aeration device, and a liquid outlet is formed in the side wall of the vertical aeration pipe at the bottom end of the aeration device; the liquid outlet of the vertical aeration pipe is connected with a liquid outlet pipe; and a teflon filter screen is arranged in the liquid outlet pipe. According to the device, the space is saved, and the aim of purifying sewage can be achieved since aerobic, anaerobic and facultative anaerobic reactions are performed by special carrier and immobilized microorganisms; and aeration of an aeration tank is carried out quantitatively and regularly, so that energy required by aeration can be greatly saved, and the aims of energy saving and high efficiency can be achieved.

The invention discloses steam sterilizing and disinfecting equipment special for medical treatment. The steam sterilizing and disinfecting equipment comprises an equipment box body, an outer shell isinstalled on the outer surface of the equipment box body, and a steam generator is fixedly arranged in the middle inside the equipment box body through a support; a water tank is arranged inside the outer shell, a vacuum layer and an expansion and contraction material are arranged between the outer shell and the water tank from outside to inside in sequence, and a sterilization chamber is fixedlyarranged in the middle inside the water tank through the support; a condensation plate is installed at the top inside the water tank, and a sewage treatment box is installed at the portion, below thesteam generator, inside the equipment box body. By means of the steam sterilizing and disinfecting equipment, medical apparatuses can be efficiently disinfected, the disinfecting efficiency of the equipment is improved, and steam can also be cooled and recycled; it is prevented that steam is condensed in the sterilization chamber and drips onto the medical apparatuses, the medical apparatuses areprevented from being affected with dampness and conveniently dried, maintenance and use of the medical apparatuses are better facilitated, and meanwhile, the disinfecting equipment better saves energyand is more environmentally friendly.

The invention discloses a high-salinity water body desalting system based on an electro-adsorption technology. The system comprises a pretreatment tank, an adsorption tank communicated with the pretreatment tank through a pipeline, a first pump arranged on a communication pipeline of the pretreatment tank and the adsorption tank, an electric adsorption assembly arranged in the adsorption tank, a water outlet tank communicated with the adsorption tank through a pipeline, a monitoring assembly for monitoring TDS and conductivity in the water outlet tank, a short-circuit circuit electrically connected with the electric adsorption assembly and enabling the electric adsorption assembly to be short-circuited, a control switch controling the short-circuit circuit to be connected or disconnected, a control unit controling the control switch to act according to the monitoring result of the monitoring assembly, and a cleaning system communicated with the adsorption tank for cleaning the adsorption tank. The control unit is electrically connected with the first pump. The system has the advantages of low energy consumption, high desalting rate, no need of using a high-valence membrane, simplicity in maintenance, no secondary pollution and the like.

The invention discloses an integrated rainwater system for a sponge city and a construction method of the rainwater system. The rainwater system comprises a middle green belt and water storage tanks, wherein the middle green belt comprises a vegetation planting area and a rainwater infiltration area; a concrete course is arranged at the lower end of the rainwater infiltration area; a rainwater pipe is arranged at the lower end of the concrete course, and the rainwater pipe is connected to the water storage tanks; water pumping pipes are connected from the interiors of the water storage tanks; bidirectional nozzles are arranged at the other ends of the water pumping pipes; and water pumps are connected to the water pumping pipes. In accordance with the shortcomings of the prior art and the characteristics of the sponge city, the rainwater system, which integrates water seepage, water storage, water purification and utilization, is designed, and the construction method of the rainwater system is correspondingly designed; by promoting the water seepage with the adoption of vegetation, the problem of road water-logging is solved through slow discharge and controlled release; and in addition, some impurities in the rainwater are separated on the basis of the purification capacity of the vegetation, and the rainwater is stored in the water storage tanks and is used for spraying roads and watering the vegetation in dry season, so that adverse effect caused by drought and flood seasons can be effectively relieved.

The invention discloses a modular subsurface infiltration structure. The periphery of the modular subsurface infiltration structure is fixed by adopting a frame structure so as to form a body; a brick infiltration structure is arranged on an upper surface layer of the body; a grit soil layer is arranged at the lower part of the brick infiltration structure; a microporous filtering membrane is arranged at the lower part of the grit soil layer and is of a structure provided with a plurality of concave pits; charcoal active powder is paved in each concave pit; a cured sand soil layer is arranged at the lower part of the microporous filtering membrane; a separable dense clay layer is arranged at the lower part of the cured sand soil layer. The modular subsurface infiltration structure which is in modular design can be singly applied or applied in a combination manner, wherein the microporous filtration is carried out by virtue of the microporous filtering membrane; the absorption is carried out by virtue of the charcoal active powder, so that the purpose of sewage purification is realized.

The invention discloses a chemical sewage filtering method. A rotatable filter element is fixedly suspended in a barrel body of a sewage filter barrel, the water inlet speed and the water outlet speedof the sewage filter barrel are monitored and set, so that the volume flow of inlet water and outlet water can be controlled, and the best combination values can be reached. In the process, a motor drives the filter element to work in turns in two working modes including vary acceleration and stable rotation, the rotation cycle length of varying rotation is far smaller than that of stable rotation, two pieces of inner filter cotton are adopted at the bottom of the barrel body of the sewage filter barrel, detachable trapezoid inner bottoms arranged oppositely form a drain port, and secondary absorption and filtration of sewage are finished. The method has the benefits as follows: the chemical sewage filtering device adopts a support mechanism and a filter mechanism, cleaning of a drain pipe is facilitated, filtered dirt can be prevented from blocking the drain pipe, purified water can be prevented from being polluted again, thoroughness of sewage tretament can be guaranteed, and the device is simple in structure and convenient to use.

The invention provides an amidated graphene airgel and a preparation method and application thereof. The preparation method comprises: firstly using ethanol as a cleaning agent to prepare carboxylated graphene with a smooth surface; and then preparing amidated graphene airgel with a smooth surface in an ethanol-water environment. Through this preparation method, an oxygen-containing group with both bioaffinity and metal ion adsorption capacity is introduced on the surface of the graphene sheet, so that while improving the metal ion adsorption capacity of the graphene airgel, it enhances the resistance to microorganisms. Adhesion ability; and, based on the smooth surface of the gel prepared in the ethanol environment, the sharp edges on the surface of the graphene airgel that are destructive to microbial cells are reduced, thereby improving the biocompatibility of the gel and facilitating the attachment of microorganisms. Therefore, the preparation method provided by the present invention has broad application scenarios in the field of sewage treatment.

The invention provides a combined matrix for sewage treatment of a subsurface wetland and a treatment system. The combined matrix comprises a combined filler unit, an isolation unit and a hard filler unit which are arranged in sequence; the combined filler unit comprises a multi-layer framework structure and a plurality of center ropes perpendicular to the framework structure; each layer of skeleton structure comprises a plurality of annular structures, every two adjacent annular structures are connected with each other through a plastic branch, and the annular structures and the plastic branches form a net-shaped structure; the plane where the annular structures are located is perpendicular to the center ropes, and each center rope penetrates through the annular structure and is connected with the multiple layers of skeleton structures. According to the combined matrix, the combined filler and the hard filler are organically combined so that the organic load bearing capacity of the wetland can be improved on the premise of preventing the matrix filler from being blocked, meanwhile, the pollutant purification efficiency of the wetland is improved, and the combined matrix can be suitable for the condition of relatively large pollution load.

The invention relates to the technical field of sewage treatment, in particular to an indoor three-dimensional hydroponic plant sewage treatment device which comprises a purification box, a disc is rotatably arranged on the inner wall of the purification box, and hydroponic barrels which are annularly distributed at equal intervals are fixedly arranged on the outer wall of the disc in a penetrating mode. A plurality of rows of water permeable holes which are annularly distributed at equal intervals are formed in the outer wall of the water culture barrel, a driving part is arranged on the outer wall of one side of the purification box, a rubber wheel is arranged at the driving end of the driving part, a mounting opening is formed in the outer wall of one side of the purification box, and the rubber wheel penetrates through the mounting opening; and the outer wall of the rubber wheel is attached to the outer wall of the disc, a drainage pipe is arranged on the outer wall of one side of the purification box, and a fixing box is arranged on the outer wall of the other side of the purification box. According to the sewage treatment device, the purpose of slowly stirring sewage can be achieved through rotation of the water culture cylinder, so that the sewage can be in uniform contact with rhizomes of plants, harmful substances in the sewage can be effectively removed, and the use effect is better.

The invention relates to a symmetrical reverse-Z-type photo-catalyst, a preparation method and an application thereof. The method includes: 1) synthesizing ZnIn2S4 and CaIn2S4 through hydrothermal method and synthesizing ZnTiO3 and Er3+: Y3Al5O12 through a sol-gel process; 2) according to certain mass ratio, adding the Er3+: Y3Al5O12 to ZnTiO3 sol to finally obtain an Er3+: Y3Al5O12 @ ZnTiO3 composite; 3) because the materials have different isoelectric points, regulating pH value to a certain range, and calcining the materials to prepare the ZnIn2S4 / Er3+: Y3Al5O12 @ ZnTiO3 / CaIn2S4 photo-catalyst. The symmetrical reverse-Z-type photo-catalyst, ZnIn2S4 / Er3+: Y3Al5O12 @ ZnTiO3 / CaIn2S4, can degrade organic pollutants under simulative sunlight irradiation and prepare hydrogen at the same time.The photo-catalyst, by using the pollutants as a recyclable energy resource, achieves double objects of environment treatment and clean energy production.

The invention relates to the field of sewage treatment and aims to provide a spherical composite adsorbent for sewage treatment. The spherical composite adsorbent disclosed by the present invention is composed of 8-10 parts of lignin, 6-9 parts of mercapto-modified polyacrylamide, 2-3 parts of sodium alginate, 30-40 parts of mercapto-modified quartz sand and 20-30 parts prepared from sepiolite. This kind of spherical composite adsorbent has the function of adsorbing and removing organic matter, suspended solids and heavy metals in sewage, and still has a good removal effect on heavy metals in acidic sewage, and has the function of integration of adsorption-flocculation-sedimentation. The contents of COD, SS, lead, cadmium, copper and mercury in the sewage have reached the requirements of the national standard of the People's Republic of China, the surface water environmental quality standard GB3838-2002, and the removal rate of heavy metals in acidic heavy metal heavily polluted wastewater has reached more than 99%. .

The invention discloses a magnetic arsenic adsorbent as well as a preparation method and application thereof. The preparation method comprises the following step of: reacting in FeCl2 liquor mixed with magnetic nano particles by using NaOH liquor as a pH value regulator and using hydrogen peroxide as an oxidant, so as to obtain the magnetic absorbent. Specially, the preparation method comprises the following steps of: adding pre-prepared magnetic nano particles into the FeCl2 liquor, uniformly mixing under a normal-temperature condition; dropwise adding NaOH aqueous liquor under a high-speed stirring condition, so as to regulate the pH value to 8.0; adding hydrogen peroxide in the case that green precipitates are generated; and regulating the pH value back to 8.0 by using the NaOH aqueous liquor to obtain the adsorbent. The adsorbnet provided by the invention has a series of advantages of large adsorbing capacity, high adsorbing speed, small influences on the absorbing process, good regenerating performance and the like, is easy to recycle, and has important practical application value.