93results about How to "Increase water yield" patented technology

The invention provides a high-frequency compacted wood combined production line. Operation equipment and an auxiliary panel are included. The auxiliary panel comprises an upper steel plate and a lowersteel plate which are used for clamping wood. The operation equipment comprises a throwing-in and taking-out part, an auxiliary high-frequency softening part, a main high-frequency punching part, a cooling part, a moving device and an operation device, wherein the throwing-in and taking-out part is arranged to be used for placing the upper steel plate and the lower steel plate to a conveying chain station and taking out the upper steel plate and the lower steel plate after the wood is machined; the auxiliary high-frequency softening part is provided with a high-frequency heating part for heating softening of a machining assembly; the main high-frequency punching part is provided with a high-frequency heating device and a press for continuously heating and compressing the wood obtained after softening treatment; the cooling part is provided with a water cooling device and / or an air cooling device to cool the compressed machining assembly; the moving device is arranged to be a conveyingchain which contains the machining assembly, sequentially penetrates through various parts and circularly conveys the wood; and the operation device is connected with various electromechanical control systems. According to the production line, the wood carrying time is greatly shortened, and the large-scale production level is improved.

The invention provides a water outlet control method and device of a water purifying and drinking machine, a storage medium and the water purifying and drinking machine. The method comprises the following steps of acquiring 3D scanning data of a water receiving container, and determining the height and the volume of the water receiving container according to the 3D scanning data; determining the water outlet height and the water outlet amount of the water purifying and drinking machine according to the height and the volume of the water receiving container; adjusting the position of a water outlet of the water purifying and drinking machine according to the water outlet height; and controlling the water purifying and drinking machine to discharge water according to the water outlet amount.The water outlet control method and device can adjust the water outlet height and the water outlet amount according to the volume and the height of the water receiving container, effectively preventswater in a cup from splashing, and simultaneously is beneficial to improving the control of the water outlet rate and improving the user experience.

The invention provides a preparing method for a modified wood powder amphiprotic dehydrating agent. The method is characterized by comprising the steps that dispersing treatment is carried out on wood powder, after alkalization is carried out, etherification reaction is carried out by adding a certain amount of 3-chloropropionic acid, a carboxyethylation product is obtained, graft copolymerization reaction is carried out on the carboxyethylation product and acrylamide, a graft copolymerization product is obtained, mannich reaction is further carried out on the graft copolymerization product, and the modified amphiprotic dehydrating agent is obtained. According to the amphiprotic dehydrating agent, due to the fact that the hydration effect and the electrostatic repulsion effect between particles with different sizes in sludge are lowered, the mutual structural constitution is improved, new sludge particles with appropriate sizes are formed, the sludge positive pressure dehydrating effect is achieved, the good dissoluvability is achieved, during processing of the sludge, generated flocculating constituents are big, the sedimentation is rapid, the water yield is high, and the processing efficiency of the sludge is improved. Compared with a traditional dehydrating agent, the amphiprotic dehydrating agent has the advantages that the pollution is low, the degradation is easy to carry out, the toxicity does not exist, the effect is good, the application range is wide, and the secondary pollution in the sludge processing process is avoided.

The invention provides a preparation method for a modified efficient polyaluminum chloride macromolecule inorganic flocculent. The specific method comprises the following steps: firstly, respectively preparing AlCl3.6H2O, MnCl2.4H2O and NaOH into 1mol / L aqueous solutions (in molar concentration), mixing the AlCl3.6H2O aqueous solution with the MnCl2.4H2O aqueous solution, then slowly dropwise adding the NaOH aqueous solution, and stirring the mixed solution while dropwise adding the NaOH aqueous solution, wherein the initial stirring speed is 200r / min-300r / min, and the final stirring speed is increased to 780r / min-820r / min; simultaneously controlling the reaction temperature at 20 DEG C-25 DEG C; and after dropwise adding of the NaOH aqueous solution is finished, further stirring, and keeping aging for 30-60 minutes. Through adding a small amount of manganese metallic ions into aluminum chloride and simultaneously controlling the alkalisation degree of the mixture solution at 2.0-2.5, the flocculent property can be improved, so that the flocculant has relatively high polymerization degree and quite high flocculation capability.

A multi-cavity type inner container of a small water storage electric water heater comprises a flat inner container body and heating tubes arranged in the inner container body. The interior of the inner container body is divided into more than one cavity, wherein the cavities are mutually communicated. The multi-cavity type inner container of the small water storage electric water heater can reasonably guide the direction of water flow, control the mixing of cold water and hot water, prevent the temperature of hot water at a water outlet of the electric water heater from being lowered too early and improve the hot water outlet rate of the small water storage electric water heater, thereby promoting the progress of small water storage electric water heater technologies.

The invention discloses sludge treatment equipment. According to the key point of the technical scheme, the sludge treatment equipment comprises a machine frame, an end cover, a discharging device and a driving device, wherein the end cover is supported on the machine frame in a horizontal rotating manner; the discharging device is supported on the machine frame in the horizontal rotating manner; the driving device drives the discharging device to rotate; the discharging device comprises a base, a barrel, a sliding rail, a power mechanism and a piston mechanism; the base is rotatably supported on the machine frame; the barrel is in connection in a horizontal sliding manner relative to the base and is in butt joint with the end cover; the sliding rail is used for the barrel to perform sliding connection and is fixedly connected with the end cover; the power mechanism drives the barrel to slide horizontally; the piston mechanism is arranged at the other end, opposite to the end cover, of the barrel; a plurality of flexible filter tubes are connected between the end cover and the piston mechanism; a feeding port is formed in the end cover; and a liquid outlet is formed in the end parts of the filter tube. The sludge treatment equipment solves the problem that the water outlet rate is not high when the conventional sludge treatment equipment performs solid and liquid separation.

The invention relates to a low-pressure hollow fiber nanofiltration membrane which comprises a polysulfone hollow fiber base membrane; the low-pressure hollow fiber nanofiltration membrane is prepared by drying the base membrane, dipping the base membrane into a film formation liquid which takes acrylic resin, carboxyl type vinyl chloride-vinyl acetate resin and methylene diphenyl diisocyanate as solutes and takes butyl acetate and dimethyl carbonate as solvents, and lifting an upper dense membrane. The low-pressure hollow fiber nanofiltration membrane is capable of effectively removing most divalent ions and a small number of monovalent ions in water, so that the effects of removing salt and purifying water can be achieved, and the human body is supplemented with trace mineral substances; furthermore, the low-pressure hollow fiber nanofiltration membrane is also capable of effectively improving the water obtaining rate and the water yield of a household water purifier; the low-pressure hollow fiber nanofiltration membrane can run at the low pressure, so that the running cost and the manufacturing cost of the household water purifier are greatly lowered.

The invention relates to a process for producing mineral water. The process comprises the following steps: (1) selecting spring water of a main peak of Dabie Mountain, filtering the spring water withcocoanut shell activated charcoal, and filtering the water again by using sandstone and activated charcoal; (2) carrying out reverse osmosis filtering on the water treated in the step (1) to remove colloidal microbes from the water; (3) carrying out iron removal by using a manganese sand filtering device, wherein a water velocity is 18m<3> / h to 20m<3> / h during iron removal; (4) carrying out sterilization by using ozone, and then, carrying out disinfection by ultraviolet rays; (5) introducing clean carbon dioxide into the water; (6) introducing clean mixed gas into the water so as to enable theoxygen content of water of 25 DEG C to reach 65mg / L; (7) carrying out sterile filling on the water. The process provided by the invention is simple, the amount of chemical additives is small, and themineral water is good in taste and high in oxygen content and has very good health-care value.

The invention belongs to the sewage treatment field, and especially relates to a water treatment composite flocculating agent and an application thereof. The flocculating agent is obtained by compounding a plurality of flocculating agents, and comprises 70-89wt% of polyaluminum chloride, 10-30wt% of an aluminum salt and 0.1-2wt% of an iron salt. The composite flocculating agent has the large strength characteristic of an inorganic flocculating agent, also has the bridge formation, network bashing, strong sweeping capability and large floc of an organic flocculating agent, and overcomes the disadvantages of low floc strength and large consumption of organic flocculating agents.

The invention relates to the technical field of sewage treatment and specifically relates to a sewage treatment method which comprises the following steps: step A, pumping sewage into a primary filtering tank to be primarily filtered and utilizing a sludge dewatering machine to dewater filter residues; step B, pumping sewage in the primary filtering tank and sewage with the filter residues removedinto a sedimentation tank, adding a flocculating agent into the sedimentation tank and standing for a period; step C, putting sewage in the sedimentation tank into an aerating tank to be aerated, adding a PH adjusting agent into the aerating tank and stirring discontinuously to make a PH value of a water body reach in a range of 6.8 to 7.6; step D, pumping sewage in the aerating tank into a disinfecting tank, adding disinfectants into the disinfecting tank, stirring discontinuously, stirring for 5 to 10 minutes and standing for 10 to 20 minutes; step E, pumping sewage in the disinfecting tankinto an activated carbon filtering tank to be filtered again. A PH value of the treated sewage is moderate, the water body is treated by disinfection treatment and activated carbon filtering treatment, sewage treatment quality is better, and furthermore, a technology is simple.

The invention discloses a ceiling-hidden-type electric water heater. The ceiling-hidden-type electric water heater comprises an outer shell, a heat-preservation layer, an inner container, a heater, a water inlet pipe, a water outlet pipe, a magnesium rod and a hanging frame, wherein the heater is located between the water inlet pipe and the water outlet pipe, the heater, the water inlet pipe, the water outlet pipe and the magnesium rod are connected into the inner container from the lateral end of the inner container, the water inlet pipe moves downwards to be near the lower wall of the inner container and is arranged horizontally, the water outlet pipe moves upwards to be near the upper wall of the inner container and is arranged horizontally, the tail ends of pipe openings of the water inlet pipe and the water outlet pipe are sealed, a plurality of water inlet holes are evenly distributed in the lower side of the pipe body of the water inlet pipe, and a plurality of water outlet holes are evenly distributed in the upper side of the pipe body of the water outlet pipe. Through the lateral water outlet design scheme of the ceiling-hidden-type electric water heater, the diameter of the inner container can be increased, the length of the inner container is increased, the volume is increased, the thickness of the heat-preservation layer is increased, the hot water outlet efficiency is higher, and the energy-saving effect is better.

The invention discloses an energy recoverer and a method for increasing the water yield of a reverse osmosis sea water desalination device. According to the method, a pretreatment sea water pump pumps pretreated sea water in a sea water well into a sea water tank; low-pressure reverse osmosis desalination and high-pressure reverse osmosis desalination are performed step by step; a mechanical vibrator and compressed air are used for stirring sea water in a reverse osmosis membrane core, and when the reverse osmosis membrane core is blocked to certain extent, energy generated through backwash of the reverse osmosis membrane core is recovered with a reverse osmosis sea water desalination manner. For the reverse osmosis sea water desalination device adopting concentration polarization instead of energy recovery to discharge concentrated sea water timely, the concentrated sea water can be discharged timely according to the concentration polarization principle in the processes of low-pressure reverse osmosis desalination, high-pressure reverse osmosis desalination and backwash. After multiple times of backwash of the reverse osmosis membrane core, back blowing through is performed once on the reverse osmosis membrane core by a roots blower. The energy recoverer comprises a container, pistons, water inlet solenoid valves and water outlet solenoid valves.

The invention discloses a method for extracting adenosine, comprising the following steps of: A, adjusting pH value of an adenosine fermentation broth to 7-8 by the use of aqueous alkali, heating, stirring, adding a flocculating agent, adjusting the rotating speed to 60+ / -10 r / m after 60+ / -10 minutes, stirring for 5-7 minutes, standing for 10-15 minutes, followed by press filtration; B, condensing the filtrate obtained from the step A in a rotary film evaporator to obtain a concentrate while the condensation temperature is controlled within 70+ / -10 DEG C and degree of vacuum is -0.095+ / -0.01 Mpa; C, placing the concentrate obtained form the step B at room temperature, naturally cooling for 2+ / -1 h, continuously cooling to below zero, followed by freezing crystallization to obtain a crystalline liquid; and D, carrying out pumping filtration on the frozen crystalline liquid obtained from the step C to obtain a wet product, putting the wet product into a baking oven, and drying for 10+ / -1 h so as to obtain a dry adenosine crude product. By the adoption of the method for extracting adenosine from the fermentation broth, the obtained adenosine crude product contains little content of impurities, the loss of the product adenosine is little, and the adenosine yield of a subsequent purification technology and a refining technology is obviously raised. In addition, the whole extraction method is economical and effective.

The invention relates to a water inlet pretreatment and water outlet aftertreatment combined purification treatment method for a landfill leachate membrane separation process, wherein the water inletpretreatment at least comprises the following steps: preparing modified attapulgite with improved adsorption performance, carrying out impurity adsorption treatment on leachate, and treating water entering a membrane separation system by using a filter unit taking coated mesoporous silica particles as a filter medium; wherein the effluent post-treatment in the landfill leachate membrane separationprocess comprises the step of purifying membrane filtration effluent by taking silicon dioxide magnetic microspheres as an adsorption medium in an electromagnetic purification tank. The combined treatment method disclosed by the invention is relatively low in preparation and operation cost and simple to operate and implement; by means of efficient adsorption of refractory organic matters, the defects that a membrane is easy to block and the membrane flux is reduced quickly are overcome, the yield of a membrane concentrated solution is effectively reduced, and the effluent quality of the membrane separation system is improved.

The invention discloses a quick-heating and positive displacement integrated electric water heater and its heating method. The electric water heater comprises a cabinet, wherein a water inlet port and a water outlet port are provided on the cabinet. The invention is characterized in that a group of chambers for storing water is provided in the cabinet, and a guide hole is provided between each chamber; an electric heating membrane heater is provided outside the cabinet, one end of the electric heating membrane heater is communicated with the water inlet port of the cabinet via a circulating pump; the other end of the electric heating membrane heater is connected with water source via an automatic switch; the water outlet port of the cabinet is connected with the water utilization pipe of the electric water heater via the electric heating membrane heater; and a temperature detector is provided in the cabinet and connected with a control device for coordinating the operation of the electric heating membrane heater, circulating pump and automatic switch. The invention can meet the requirement of randomly supplying hot water, and has the advantages of convenient and rapid usage, good energy-saving effect, long service life, easy arrangement, high hot water supplying rate, and high safety.

The invention discloses a preparation method of a pollution-resistant nanofiltration membrane for a water purifier. The method comprises the following steps: 1: preparing a membrane film; 2: preparing a casting solution; 3: drying the base membrane, and heating the surface to 30-40 DEG C, then adding the base membrane into the casting solution and impregnating for 2-4 h, conducting ultrasonic disperse in the whole process of membrane impregnation, so as to prepare the pollution-resistant nanofiltration membrane; then washing the nanofiltration membrane with deionized water and then drying.

The invention relates to the technical field of household appliances, and provides a water heater. The water heater comprises a water heater outer shell, a water inlet and a water outlet are formed inthe water heater outer shell, a first box body and a second box body are connected in series in the water heater outer shell along the water flowing direction, a heat exchanging pipe introducing to-be-heated cold water is arranged in the first box body, the positions around the heat exchanging pipe in the first box body are filled with a phase-changing material, and a heating piece for heating the phase-changing material is arranged in the first box body; and the second box body is a water storage box, and an electric heater is arranged in the water storage box. One of water storage box liners is used for storing part of hot water, a rapid electric heating function is supported, and meanwhile, the stability of the water discharging temperature of the water heater can be ensured; and in addition, when cold water passes through a liner for storing the phase-changing material, the cold water is subjected to sufficient heat exchanging with the phase-changing material, and due to the factthat the specific heat capacity of the phase-changing material is high, the water discharging rate of hot water is high. The water heater uses the advantage of specific heat capacity of the phase-changing material and the advantage of the rapidity of heating of the electric heater in the water storage box and the consistency of the water discharging temperature.

The invention discloses a water inlet assembly capable of improving hot water outlet rate. The water inlet assembly capable of improving the hot water outlet rate comprises a base, an inner water guide pipe, an outer water outlet pipe surrounding the inner water guide pipe, a supporting pipe column and a flow slowing and stabilizing cover; the flow slowing and stabilizing cover comprises a body part with a lower opening, a connecting hole and a flow stabilizing plate; arc-shaped flow stabilizing plates which are distributed circularly form a flow stabilizing plate group; the gaps among adjacent two flow stabilizing plates in the flow stabilizing plate group form a flow stabilizing channel; the upper end of the supporting pipe column is connected with the connecting hole; a water guide hole is positioned in the flow slowing and stabilizing cover; the outer water outlet pipe penetrates through the supporting water column; a water outlet pipe hole of the outer water outlet pipe corresponds to the water guide hole in the supporting pipe column; a flange is adhered to a bottom plate of an internal threaded counter bore. Because of the adoption of the structure, after water enters the flow slowing and stabilizing cover through the water guide hole of the supporting pipe column, the water flow speed is slowed and stabilized effectively when the water flows out of the flow slowing and stabilizing cover under the effect of the plate stabilizing plate; the defect that a water layer in a liner is damaged because of high water outlet speed in the prior art is overcome; the hot water outlet rate is improved.

The present invention discloses a reverse osmosis integration machine purification system, which comprises a prime mover, a separation and purification machine connected to the prime mover, and a permeation membrane unit or unit group connected to the separation and purification machine in parallel.

The invention discloses a method for treating sewage by a double-membrane system of an algae bio-membrane and a plate micro-filtration membrane. The method contains two stages: a preceding stage and alater stage. In the preceding stage, the biological membrane method is adopted: in an algae bio-membrane reactor, a carrier adhesion method is adopted for immobilized culture of algae; and after a stable algae bio-membrane is formed, the algae bio-membrane reacts with domestic sewage added therein. In the later stage, a plate micro-filtration membrane module is added to filter out a few algae andother impurities mixed in an effluent obtained after treatment of the algae bio-membrane, and the deposited algae mud is recycled into the algae bio-membrane reactor to realize reutilization. By themethod of the invention, heavy metal and nitrogen and phosphorus can be effectively removed from domestic sewage and COD is reduced; and service life of the algae bio-membrane can be prolonged and effluent quality also can be improved.

The invention relates to a water tank used for a heat pump hot water heater. The water tank comprises a hot water discharging liner and a cold water feeding liner, wherein the bottom of the hot water discharging liner is provided with a hot water outlet; the bottom of the cold water feeding liner is provided with a cold water inlet; the hot water discharging liner and the cold water feeding liner are connected by liner connecting pieces; a first heat exchange coil pipe is arranged in the hot water discharging liner; a second heat exchange coil pipe is arranged in the cold water feeding liner; a liner connecting water pipe is arranged between the hot water discharging liner and the cold water feeding liner; the head end of the liner connecting water pipe is positioned on the top of the cold water feeding liner; the tail end of the liner connecting water pipe is positioned on the bottom of the hot water discharging liner; the first end of the first heat exchange coil pipe and the first end of the second heat exchange coil pipe are communicated on the outsides of the liners; the second end of the first heat exchange coil pipe is provided with a Freon inlet; the second end of the second heat exchange coil pipe is provided with a Freon outlet. The hot water discharging rate of the water tank is high, and the problems of low hot water discharging rate and large size of the traditional water tank are solved.

The invention discloses a method for dehydrating highly emulsified sump oil. The method comprises the following steps: injecting highly emulsified sump oil and a demulsifier into a jet-static mixer for full contact and mixing to obtain a preliminarily separated oil-water mixture; injecting the preliminarily separated oil-water mixture into an efficient separator for gravity settling separation orcoalescence separation to obtain sump oil and wastewater of which the water content meets the requirements. The invention further discloses a device adopted by the method. The invention aims to solvethe problems that large refinery sump oil yields and high sump oil moisture contents cause huge dirty oil storage pressure on a refinery plant; the dirty oil is difficult to recycle; and the like. Onthe basis of the demulsification and coalescence sedimentation principle, a complete set of separation device integrating the jet-static mixer and the efficient separator is developed, efficient removal of water in sump oil is achieved, the separation device is simplified while it is guaranteed that a final product is qualified, and resource utilization of water-containing sump oil is achieved.

The invention belongs to the field of environmental protection, and particularly relates to a wastewater recovery device for environmental protection. The device comprises a water storage barrel, the lower surface of the water storage barrel is movably connected with a drainage device, the lower part of the inner wall of the drainage device is slidably connected with a spring support rod, and the bottom end of the inner wall of the spring support rod is fixedly connected with a centrifugal rotating machine. Through holes are uniformly formed in the middle of the inner wall of the processing cylinder, eight filter pipes are fixedly connected to the middle of the inner wall of the processing cylinder through the through holes, and one end of each filter pipe extends to the outside of the processing cylinder. Compared with a static precipitation method, the method for filtering the wastewater through the device canspeed up filtration time of wastewater, so that efficiency of wastewater treatment is improved, and a lot of time is saved; and wastewater and residues can be separated in a pressurization mode, so that more wastewater can be extruded out of the processing cylinder, the water outlet rate is higher, and water resources are saved.

The invention relates to a production method of persimmon life water. The method comprises the following steps: (1) squeezing persimmons and separating so as to obtain a primary pulp containing clear juice; (2) centrifuging to separate the clear juice from the primary pulp, namely centrifuging the primary pulp obtained in the step (1) at the revolving speed of 4000r / min for 10 minutes and collecting the clear juice; (3) performing enzymolysis on pectin, namely adding pectase, the weight of which accounts for 0.07% to 0.09% of that of the clear juice, into the clear juice obtained in the step (2), evenly mixing, then heating to 50 DEG C to 65 DEG C and preserving the heat for 30 to 120 minutes so as to obtain primary clear juice; (4) performing rough filtration on the primary clear juice so as to remove fibers and impurities; (5) performing astringent-return resisting treatment; (6) performing secondary filtration; and (7) degassing and homogenizing, namely performing vacuum degassing on the clear juice in the step (7) and homogenizing so as to obtain the persimmon life water. The persimmon life water is prepared by taking the clear juice of the pure persimmons as a raw material without various preservatives, sweetening agents and pigments, and the heating process is shortened via the one-step heating enzyme deactivation technology. Thus, the original flavor of the persimmons is retained to a maximum extent.

The invention relates to an ultrafiltration reverse-osmosis water purification treatment system. The ultrafiltration reverse-osmosis water purification treatment system comprises a raw water tank, a sand filter water intake high-pressure pump, a sand filter, an activated charcoal filter water intake high-pressure pump, an activated charcoal filter, a first reverse osmosis filter water intake high-pressure pump, a first reverse osmosis filter and a purified water tank which are connected together sequentially, wherein the raw water tank is provided with an ultraviolet lamp; the sand filter comprises a tank body which is provided with a grille plate and a sand filtering layer stacked on the grille plate, the tank body is partitioned into a sand filter part water outlet chamber and a sand filter part water inlet chamber by the sand filtering layer, the sand filter part water outlet chamber is provided with a sand filter part water outlet pipe orifice which is connected together with the activated charcoal filter water intake high-pressure pump, and the sand filter part water inlet chamber is provided with a sand filter part water inlet pipe orifice which is connected together with thesand filter water intake high-pressure pump. The ultrafiltration reverse-osmosis water purification treatment system has the advantages that purified water is few in viable bacteria and the sand filter is good in water flow smoothness, and the problems of the existing water purification treatment process that the purified water is large in quantity of viable bacteria and the sand filter is poor in water flow smoothness are solved.

The invention discloses a skid-mounted treatment device and method for oilfield sewage. The skid-mounted treatment device comprises a sewage pretreatment system and a sewage treatment system. The sewage pretreatment system comprises a sewage tank. The sewage tank comprises an oil-water separation zone, a water inlet zone and a sewage neutralization zone, wherein sewage in the water inlet zone enters the oil-water separation zone through a sewage diversion trough; and sewage de-oiled by a floating oil-receiving device in the oil-water separation zone enters the sewage neutralization zone through a liquid level controller. The sewage treatment system comprises a hydrocyclone, a microfiltration device and an ultrafiltration device, wherein the outlet of the hydrocyclone is connected with theinlet of the microfiltration device, and the outlet of the microfiltration device is connected with the inlet of the ultrafiltration device. The treatment method comprises sewage pretreatment and sewage treatment. The invention has the following beneficial effects: grading treatment is adopted, so good effect is obtained; the entire structure is an integrated skid-mounted structure, so use requirements under the condition of no on-site sewage treatment station are satisfied; and the whole treatment device is low in sewage treatment cost, does not need civil engineering and has high efficiency.

The invention relates to the technical field of sewage treatment, in particular to a reverse osmosis membrane pulse sewage discharge method. The reverse osmosis membrane pulse sewage discharge method comprises the following steps of: (1) filtering sewage by using a filter; and (2) further filtering the sewage through reverse osmosis membrane pulse sewage discharge and performing pulse treatment simultaneously, wherein the pH value of the sewage is controlled to be between 3 and 9, and the environment temperature of the sewage treatment is controlled to be lower than 50 DEG C. The reverse osmosis membrane pulse sewage discharge method is good in treatment effect, energy-saving and environment-friendly, water is discharged continuously and can be directly recycled, and direct cost of treatment is lower than that of tap water.

The invention particularly relates to a water circulation heater which comprises a water heater water tank. The water heater water tank is provided with a medium tank. The medium tank is provided with a water inlet and a water outlet. The water inlet and the water outlet are communicated with the water heater water tank. A heating source device is arranged inside or outside the medium tank. The water circulation heater has the beneficial effects that when water in the medium tank is heated, water molecules will be enlarged, move upwards and enter the water heater water tank through the water outlet, cold water in the water heater water tank flows into the medium tank through the water inlet connected with the medium tank so as to supplement cold water in the medium tank, the temperature of water in the water heater water tank is basically uniform in the process, and the hot water drainage rate of the water heater is improved; it is proved that the volume can be expanded by more than 2 times compared with an existing water heater with the same volume as the water circulation heater on the market; and the medium tank and the water heater water tank can be separated, and therefore the water circulation heater is convenient to carry, convey, maintain and sale.

The invention discloses a reverse osmosis device for processing industrial sewage with a high salt concentration. The reverse osmosis device comprises an upper mounting base, a lower mounting base, and a reverse osmosis film. The upper mounting base, the lower mounting base, and the reverse osmosis film form a liquid storing area. A filter cylinder is vertically arranged in the liquid storing area. The filter cylinder divides the liquid storing area into an external osmosis area and an internal osmosis area. A cleaning assembly is arranged in the external osmosis area. The upper mounting baseis provided with a liquid inlet. The lower mounting base is provided with a concentrated water outlet and a slag outlet. Compared with the prior art, through an ultrasonic vibration device and an aeration device, liquid in the liquid storing area is driven to wash the reverse osmosis film gradually; the obstruction of the reverse osmosis device is prevented; the purified water output is effectively increased; the energy consumption is largely reduced; the reverse osmosis film can effectively block charged ions and makes electrically neutral water molecules pass through freely; the salt rejection rate is basically the same, the throughput of the composite film is greatly increased, and the service life is long.