33results about How to "Avoid water short circuit" patented technology

A nitrification-denitrification two-phase expanded-bed reactor and a sewage treating process are provided. The expanded-bed reactor comprises a reactor, an oxygen dissolving machine, a circulating pump and auxiliary pipelines. The reactor has a vertical cylindric structure, and comprises a bottom water distribution zone, an aerobic reaction zone, a secondary water distribution zone, an anoxic reaction zone and a water discharging zone from bottom to top. The aerobic reaction zone and the anoxic reaction zone are filled with small-particle-size fillers. The secondary water distribution zone is provided with a shrinkage-expansion type collector ring. The water discharging zone is provided with a three-phase separator. Through adoption of the expanded-bed reactor, nitrification and denitrification are performed in the reactor, biochemical and oxygen dissolving processes are performed independently, a biochemical treating load is high, the floor space of equipment is small and investment and a running cost are saved.

A waste water treatment device and a method are disclosed. The waste water treatment device comprises an ozone oxidation device and a biochemical treatment device. The ozone oxidation device comprises an ozone destructor and an oxidation reactor. The biochemical treatment device comprises a two-phase expanded bed, an oxygen dissolving device and a circulating pump. An exhaust outlet at the top of the oxidation reactor is connected to a gas inlet of the ozone destructor. A gas outlet of the ozone destructor is connected to a gas inlet at the lower part of the oxygen dissolving device. A water discharging pipeline at the bottom of the oxygen dissolving device and a water discharging pipeline at the lower part of the oxidation reactor are combined and then connected to the circulating pump. The outlet of the circulating pump is connected to a water inlet at the lower part of the two-phase expanded bed. A water outlet at the upper part of the two-phase expanded bed is connected to a water inlet at the upper part of the oxygen dissolving device. The method includes: feeding waste water into the oxidation reactor firstly to subject the waste water to oxidation, and feeding the waste water into the biochemical treatment device to subject the waste water to aerobic biochemical reactions. According to the waste water treatment device and the method, reaction conditions and mass transfer conditions can be optimized, the biochemical treatment load is increased, the oxygen component in the oxidation exhaust and the excess pressure of the exhaust are fully utilized, and the treatment cost is reduced.

The invention relates to the field of electronic communication, and discloses a USB (universal serial bus) device, which comprises an OTG (on-the-go) controller, a first plug, a second plug and a switchover device; the OTG controller is used for being externally connected with two piece of externally connected equipment to perform data interchange; the first plug is used for being plugged with the first externally connected equipment; the second plug is used for being plugged with the second externally connected equipment; the OTG controller is respectively communicated with the first and second plugs; the switchover device is used for controlling the communicating state of the first and second plugs and performing data processing by the OTG controller. The USB device can realize the data connection between mobile equipment or connection between a computer and the mobile equipment or be used as a power supply line for charging the mobile equipment or a battery by changing the work state of the switchover device, so the universality and portability of the USB device is improved.

The invention discloses a magnetic internally-circulating fluidized bed adsorber; a water inlet pipe is arranged in the center of the bottom of a cone; an adsorbent discharge pipe is arranged at one side of the water inlet pipe at the bottom of the cone; the upper edge of an inner guide cylinder and the upper edge of the cone are arranged on the same plane; the upper edge of a middle cylinder body and the bottom of a water collection tank are arranged on the same plane; the inner guide cylinder is fixedly connected with the cone; the middle cylinder body, an outer guide cylinder and an inclined plate are fixedly connected with a cylinder body; a piece of magnet is arranged in a ring groove embedded in the cylinder body; an overflow weir is arranged at the upper edge of the inner side of the water collection groove; a water outlet pipe is arranged at the periphery of the water collection groove and is parallel to the water level; a motor is arranged just above the magnetic internally-circulating fluidized bed adsorber by a bracket; a stirring paddle is connected with the motor by a coupler; and the stirring paddle is arranged on the center line of the magnetic internally-circulating fluidized bed adsorber. The magnetic internally-circulating fluidized bed adsorber is convenient to operate, little in adsorbent consumption, low in energy consumption and high in adsorption efficiency.

The invention belongs to filter equipment in the field of water treatment, and in particular relates to a fiber sand filter material. The fiber sand filter material is characterized in that a plurality of threads of fiber filter materials are intersected at a point in space all around; the diameter of each thread of the fiber filter material ranges from phi 1 to phi 6 millimeters; the threads of fiber filter materials are firmly inosculated together at the intersections by an inosculating substance to form a sand core; the diameter of the sand core ranges from phi0.3 to phi5 millimeters; each thread of the fiber filter material is 0.1 to 10 millimeters higher than the external surface of the sand core; and the specific gravity of the sand core can be adjusted according to requirements through adopting different inosculating substances. Compared with the sand filter material, the fiber sand filter material has the characteristics of high filter speed, high water filtering precision, little water head loss, large dirt content, easy cleaning, and the like. Compared with a fiber bundle and a fiber ball filter material, the fiber sand filter material possesses the strong points of the prior sand filter, is easy to clean, has good liquidity, can realize synchronous operations of running and backwashing, is convenient to operate, and is not limited in the filling direction. The fiber sand filter material does not drop off and is firmly consolidated during running and backwashing.

The invention relates to an LED lamp which comprises a lamp cap, a lamp body and a heat dissipation lampshade. The lamp cap comprises a lamp cap body, an anode end, a cathode end and at least one connection part, wherein the anode end, the cathode end and the connection parts are arranged on the lamp cap body. The connection parts are provided with anode parts and cathode parts. The anode parts are connected with the anode end and the cathode parts are connected with the cathode end in the connection parts of the lamp cap. The lamp body comprises a plurality of PCBs. Each PCB is provided with at least one connection part, and the anode part and the cathode part of the connection part are connected with an anode part and a cathode part of another connection part outside the PCB in a pivoted mode. The light-emitting face of the PCB is provided with a plurality of LED lamps. The installation face of the PCB is provided with a control device for controlling the LED lamps. The heat dissipation lampshade is fixedly arranged on the lamp cap and is provided with a plurality of heat dissipation holes. By means of the LED lamp, the heat dissipation effect is made to be better, different lighting effects of the LED lamp is achieved as well, the LED lamp can be used for different occasions, the application range of the LED lamp is broadened, and the LED lamp is enabled to have more universality.

The invention relates to an LED lighting lamp which comprises a lamp cap, a lamp body and a heat dissipation lampshade. The lamp body comprises an installation column body and a plurality of PCBs. An anode part and a cathode part are arranged inside the installation column body and are connected with an anode end and a cathode end of the lamp cap respectively. The installation column body is provided with a plurality of pairs of installation branches in an extended mode, and each pair of installation branches comprises an anode installation branch and a cathode installation branch which are connected with the anode part and the cathode part respectively. The PCBs are respectively fixedly connected to one pair of installation branches in an inserted mode, and an anode circuit is connected with the anode installation branches and a cathode circuit is connected with the cathode installation branches. Light-emitting faces, away from the installation column body, of the PCBs are provided with a plurality of LED lamps, and installation faces, facing the installation column body, of the PCBs are provided with control devices for controlling the LED lamps. The heat dissipation lamp shade is fixedly arranged on the installation column body. According to the LED lighting lamp, the heat dissipation effect of the LED lighting lamp is made to be better, different lighting effects of the LED lighting lamp are achieved as well, the LED lighting lamp can be used for different occasions, the application range of the LED lighting lamp is broadened, and the LED lighting lamp is enabled to have more universality.

The invention discloses a relay drying and dust removing device. The relay drying and dust removing device comprises a machine frame, wherein a movable drying assembly is arranged at the inner bottomend of the machine frame; the movable drying assembly comprises a first motor fixedly installed at the bottom end of the machine frame, wherein the tail end of the first motor is in power connection with a first rotating shaft extending up and down; the upper end of the first rotating shaft is fixedly connected with a first bevel gear, wherein the upper end of the first bevel gear is engaged witha second bevel gear; and a second rotating shaft extending front and back is fixedly installed in the center of the second bevel gear, wherein the second rotating shaft is fixedly connected with a first transmission wheel located on the rear side of the second bevel gear. According to the relay drying and dust removing device, when the device works, a relay is dried through moving the drying assembly to prevent water inflow short circuit, the relay is fixed through two limiting plates, and after the relay is completely fixed, the device sweeps and collects dust on the relay, in this way, the dust on the relay can be effectively treated, the working environment is improved, and energy consumption is reduced.

The invention relates to a multistage multipoint water inlet enhanced denitrification sewage treatment system which comprises an AAO biochemical treatment module and an AO biochemical treatment module. The AAO biochemical treatment module comprises an anaerobic tank, a first anoxic tank and a first aerobic tank; the AO biochemical treatment module comprises a second anoxic tank and a second aerobic tank. Raw water is divided into at least two streams, one stream enters the anaerobic tank after being pretreated, effluent of the anaerobic tank enters the first anoxic tank, and effluent of the first anoxic tank enters the first aerobic tank; the other stream in the raw water enters the second anoxic tank together with the effluent of the first aerobic tank after being pretreated, and the effluent enters the second aerobic tank. The first aerobic tank is also provided with a nitrification liquid return pipeline connected with the first anoxic tank, and the second aerobic tank is also provided with a nitrification liquid return pipeline connected with the first anoxic tank and the second anoxic tank. The effluent treated by the AO biochemical treatment module enters a secondary sedimentation tank, the secondary sedimentation tank performs mud-water separation, and the effluent is used for advanced treatment. According to the invention, the problem of increase of organic matters or total nitrogen in effluent due to incomplete nitrification and denitrification caused by an external carbon source is effectively avoided.

The invention relates to the technical field of liquid containers, in particular to a water bucket for controlling the liquid level height to be unchangeable and a height control method thereof. The water bucket comprises a shell, a liner moving up and down along an inner cavity of the shell, a liner support, and an electric pushing rod, wherein the liner is used for containing liquid, the liner support is arranged between the lower end face of the liner and the bottom end face of the inner cavity of the shell, and the liner support makes contact with the liner and is used for supporting the liner, the electric pushing rod is arranged on the bottom end face of the inner cavity of the shell, the pushing rod top end of the electric pushing rod is fixedly connected with the liner support, andthe electric pushing rod drives the liner support to move in the vertical direction; a pressure sensor is arranged between the pushing rod top end of the electric pushing rod and the liner support; and a laser range finder is arranged on the lower end face of the liner support and used for measuring the distance between the lower end face of the liner support and the bottom end face of the innercavity of the shell. According to the water bucket, the effect that the height from the upper surface of the liquid in the liner and the ground is unchangeable can be achieved.

The invention relates to the technical field of automobile control methods, in particular to a vehicle flooding automatic protection system and a control method The system comprises a flooded monitoring module used for monitoring the flooded condition of a vehicle and transmitting a corresponding monitoring instruction; a control module which formulates a corresponding control instruction according to the monitoring instruction; and an execution module used for receiving the control instruction transmitted by the control module to disconnect the electric appliance element of the vehicle from the corresponding power supply. The protection system can disconnect the circuit between the electric appliance element to be flooded and the corresponding power supply when the vehicle is flooded, prevents the electric appliance element of the vehicle from being soaked in water and short-circuited, solves the problem that the electric appliance element on the vehicle is completely damaged if the vehicle cannot be moved away in a traditional mode, and is extremely simple in control mode and convenient to use, and the method has high popularization value.

The invention relates to a swimming pool automatic-washing machine, which is formed by a power control box, a water-discharge device, a filter, a frame cover, a motor, a bracket, a cleaning belt, and a frame. Wherein, the floating material can be polyphenyl foam plastic; the cleaning belt can be modified PVC material as soft polyvinyl chlorideto apply large temperature range. It has the advantages that: 1, the new water-proof structure can prevent watering the motor, each transmission elements uses non-oil sheath structure, and service life can be above 2000 hours; 2, the direct current motor uses new material which can operate more than 1600 hours; 3, the circuit of control power and the wire distribution technique are modified to reach the Europe organism safety standard; 4, the cleaning ability is significantly improved; 5, it uses floating material to make the whole machine be able dipped in water without changing working property.

The invention discloses a phosphorus containing wastewater treatment system and a treatment method thereof, wherein the treatment system at least comprises a pretreatment pool, a coagulation sedimentation device, a sand filter tank and a clear water regulation pool which are sequentially connected; the pretreatment pool is used for enabling macromolecular pollutants to be reacted with a reducing agent to produce small molecule pollutants under the acid condition and is internally provided with an ORP determination device and a stirring device; the coagulation sedimentation device is used for enabling the pollutants to form difficult-soluble matters to be separated from water; the sand filter tank is used for removing fine suspended particulate matters in wastewater; and the clear water regulation pool is used for regulating a pH value of clear water to be between 6 and 9. In the technical scheme of the invention, the design is ingenious, and the structure is simple; by arranging the pretreatment pool and performing pretreatment on the wastewater with the reducing agent, macromolecular chains are broken to obtain small molecules, so that the subsequent coagulation effect of the wastewater is improved, the advantageous condition is provided for subsequent sedimentation treatment, the removal efficiency of organic phosphorus is grealty improved, and the final effluent quality is ensured.

The invention discloses a waterproof and anti-electric shock power adapter. The power adapter comprises a sealed shell, a fixed top plate and a fixed bottom plate, the fixed bottom plate is fixedly installed on the outer surface of the lower end of the sealed shell. Two groups of butt-joint plugs are movably mounted under the fixed bottom plate; a second turntable is movably mounted on the inner side of the upper end of the fixed bottom plate; two groups of first turntables are movably mounted on the inner surface of the inner side of the second turntable; the butt joint plug and the second turntable are movably connected through the first turntables, circular clamping grooves are formed in the inner surface of the fixed bottom plate and the inner surface of the second turntable in a penetrating mode, the fixed top plate is fixedly installed on the inner surface of the upper end of the sealed shell, and a side rotating clamping cover is movably installed on the inner surface of the inner side of the fixed top plate. The waterproof and anti-electric shock power adapter is provided with a double-rotation adjusting structure, the use flexibility is improved, meanwhile, the waterproofand anti-electric shock power adapter is provided with a sealing closing structure, the waterproof and anti-dust effects are improved, and the service life is prolonged.

The invention discloses properly-sealed hand-held electronic equipment, relates to the dynamo-electric field, belongs to the mobile electronic equipment and aims to provide the properly-sealed hand-held electronic equipment. According to the properly-sealed hand-held electronic equipment, short circuit of a circuit board caused by water leaking easily through an earphone jack and a charging jack on the hand-held electronic equipment in the prior art can be avoided through an improved outer casing, the hand-held electronic equipment mainly comprises the outer casing and a circuit in the outer casing, wherein the outer casing is provided with the earphone jack and the charging jack, rectangular U-shaped members are respectively arranged at the earphone jack and the charging jack of the outer casing, the earphone jack and the charging jack are respectively communicated with bottom portions of the U-shaped members, side walls of the U-shaped members are provided with liquid guide grooves, the liquid guide grooves are in movable connection with sealing members, and at least one of water absorption material layer having quite strong water absorption performance is respectively pasted at bottom portions of the sealing members. The hand-held electronic equipment is advantaged in that small-amount water can be prevented from entering the hand-held electronic equipment.

The invention discloses a hollow display sprinkler, which comprises a sprinkler unit (100) and a display unit, wherein the sprinkler unit (100) comprises a handle (110) which is provided with a water inlet channel (111), and a shower head (120) which surrounds a middle hole (121) circularly; the shower head (120) is provided with an annular cavity (122); the annular cavity (122) is provided with an annular water channel (124); the display unit comprises a detector (210), a display screen (220) and a circuit board (230); the detector (210) is arranged on the sprinkler unit (100), and is used for detecting the water flow parameters of the sprinkler unit (100); the circuit board (230) is arranged in the annular cavity (122); and the display screen (220) is arranged on the sprinkler unit (100), and a display part of the display screen (220) is positioned in the middle hole (121). In the hollow display sprinkler, the structural shape and display function of the hollow sprinkler are combined skillfully, the display screen is arranged on the sprinkler unit, and the display part of the display screen is positioned in the middle hole, so that the hollow display sprinkler has high appearance integrity, is attractive, and is simple in structure; and a user can rapidly and intuitively watch the display screen.

The invention discloses a drying and dust removal device for a relay, which comprises a frame, a mobile drying assembly is arranged at the inner bottom of the frame, and the mobile drying assembly includes a first motor fixedly installed at the bottom of the frame. The end of the first motor is power-connected with a first rotating shaft extending up and down, the upper end of the first rotating shaft is fixedly connected with a first bevel gear, and the upper end of the first bevel gear is engaged with a second bevel gear, and the center of the second bevel gear is A second rotating shaft extending forward and backward is fixedly installed, and the second rotating shaft is fixedly connected with a first transmission wheel located at the rear side of the second bevel gear. When the device is working, the relay is dried by moving the drying component to prevent water short circuit, and the relay is fixed by two limit plates. After the device is completely fixed, the device cleans and vacuums the relay, which can effectively deal with the dust on the relay. , improve the working environment and reduce energy consumption.

The invention discloses an industrial digital electronic detonator leg wire waterproof device and a use method. The industrial digital electronic detonator leg wire waterproof device comprises a base assembly, an overturning cover assembly, a wiring terminal assembly and a sealing ring assembly, the using method comprises the steps that firstly, the first sealing ring body is installed; step 2, installing networking wires and leg wires; thirdly, a second sealing ring body is installed; step 4, detecting and scanning the code by using an exploder; the wire clamp structure designed by the invention can meet the operation requirement of simultaneously detecting and scanning codes of the exploder, so that the operation steps are reduced, and the working efficiency is improved; the base assembly is provided with the double waterproof chambers, the waterproof effect of the device can be effectively improved through cooperation with the sealing ring assembly, and therefore water inflow short circuit is avoided, and the operation safety is improved; the overturning cover assembly is designed to be of a clamping type structure and is convenient to open and close, the frame designed in the overturning cover assembly can improve the sealing and attaching effect of the sealing ring assembly, and therefore the fastening performance of press fit of force bearing points at the positions of the wire passing holes is improved.

The invention discloses a direct-current cable for rail transit, which comprises a sheath layer, a flame retardant layer, a water blocking layer, an insulator and a conductor, the insulator wraps theouter surface of the conductor, the water blocking layer is arranged on the outer surface of the side edge of the insulator, the flame retardant layer is wound on the outer surface of the water blocking layer, and the sheath layer is extruded on the outer surface of the side edge of the water blocking layer. The insulator is arranged between the conductor and the water-blocking layer, and the flame-retardant layer is arranged between the water-blocking layer and the sheath layer. According to the direct-current cable for rail transit, the direct-current cable for rail transit has a multi-protection structure, the bending effect of the direct-current cable for rail transit is improved, the cracking phenomenon of the direct-current cable for rail transit during bending laying is avoided, andmeanwhile, the waterproof effect of the direct-current cable for rail transit is improved; and therefore, the direct-current cable can be used underwater for a long time, and the safety of the direct-current cable in use is improved.

The invention discloses an anoxic expanded bed device and a method for treating wastewater. The problem of uneven water inlet distribution of an anoxic expanded bed is effectively solved, water flow short circuit is avoided, and organic matter and nitrate removal load is increased. A water and gas distribution distributor is arranged at the top of the anoxic expanded bed, so that biological fillers in the anoxic expanded bed are effectively prevented from being discharged out of a circulating system, and the circulating system stably runs for a long time. The anoxic fluidized bed is large in height-diameter ratio, small in occupied area, high in sewage treatment efficiency, high in impact resistance, short in residence time, easy and convenient to operate, high in economic benefit and widein application prospect.

The invention relates to the technical field of communication, in particular to a self-circulation drying heat dissipation communication base station which comprises a box body, a first cavity is formed in the box body, a supporting base is fixedly arranged on the box body at the bottom of the first cavity, a moving rod is fixedly arranged on the supporting base, and a tray is fixedly arranged at the moving end of the moving rod. A limiting groove is fixedly formed in the tray; a waterproof heat dissipation module is fixedly arranged on the tray; a water outlet hole is formed outside the box body, a water leakage opening is formed in the position, making contact with the tray, in the box body, the water leakage opening is communicated with a water storage cavity in the box body, a rail shell is arranged in the wall, connected with the first cavity, of the water storage cavity in the box body, and a self-drying module is arranged in the rail shell in a sliding mode. Heat dissipation in the communication base station can be guaranteed while reliable water prevention is achieved.

The invention discloses a flame-retardant PCB board, which comprises a mounting plate, a mounting hole, a silica gel heat conducting frame, a heat dissipation hole, a semiconductor refrigeration sheet, a heat dissipation copper pipe, a connecting copper pipe, a heat conducting plate, an insulating plate, a fixing block, a micro fan, a set Air bucket, fireproof frame, heat conduction inner core, insulating frame, inner insulating layer, flame retardant layer, anti-aging layer, power layer, waterproof layer, grounding layer, chip, copper foil layer, outer insulating layer and temperature sensing IC. The invention has a reasonable structure, the real-time temperature of the chip can be detected in time through the temperature sensing IC, and the work of the micro fan and the semiconductor refrigeration chip is controlled according to the temperature, and the bottom of the PCB board is provided with support insulation and heat transfer through the insulating plate and the heat conducting plate. The micro fan drives the air from the air collecting bucket to the silicone heat conduction frame, so as to quickly cool down the heat dissipation copper pipe and take away the heat generated by the semiconductor refrigeration sheet when it is working. Effect.

The invention belongs to the technical field of filter plant in the field of water treatment, and in particular relates to a method for installing fiber filter materials in bulk. The method comprisesthe following steps: directly installing two ends of the wrapped fiber filter materials without any treatment on two rods 3 in bulk, and fixing the rods 3 on a filter board 1 through a connecting carrier 2, wherein fibers on the joints of the fiber filter materials 4 and the rods 3 are distributed on the rods 3 evenly in a floating state, and are not knotted by ropes to be limited. The method greatly improves the cleaning regeneration effect of the fiber filter materials, reduces the installation time, and improves the quality and the quantity of filtered water.

The invention discloses a handset provided with water-blocking and moisture-proof rubber strips and relates to the electromechanical field, which belongs to the field of mobile electronic equipment. The object of the present invention is to provide a handset provided with water-blocking and moisture-proof rubber strips. In order to realize the above purpose, the shell of the handset is mainly improved. In this way, the condition in the prior art that water easily flows into the handset through the earphone socket and the charging socket of the handset so as to cause the flooding and short-circuit condition of the circuit board of the handset can be avoided. The handset mainly comprises a shell and a circuit board inside the shell. The shell is provided with an earphone socket and a charging socket. The shell is provided with rectangular water-blocking and moisture-proof rubber strips at the locations of the earphone socket and the charging socket. The earphone socket and the charging socket are respectively connected with the bottoms of the water-blocking and moisture-proof rubber strips. The sidewall of each water-blocking and moisture-proof rubber strip is provided with a liquid guiding groove and a sealing member arranged in the liquid guiding groove is in sliding connection with the liquid guiding groove. At least one water absorption material layer, excellent in water absorption performance, is attached to the bottom of the sealing member. According to the technical scheme of the invention, a small amount of water is prevented from entering the handset.

The invention relates to an LED lamp which comprises a lamp cap, a lamp body and a heat dissipation lampshade. The lamp cap comprises a lamp cap body, an anode end, a cathode end and at least one connection part, wherein the anode end, the cathode end and the connection parts are arranged on the lamp cap body. The connection parts are provided with anode parts and cathode parts. The anode parts are connected with the anode end and the cathode parts are connected with the cathode end in the connection parts of the lamp cap. The lamp body comprises a plurality of PCBs. Each PCB is provided with at least one connection part, and the anode part and the cathode part of the connection part are connected with an anode part and a cathode part of another connection part outside the PCB in a pivoted mode. The light-emitting face of the PCB is provided with a plurality of LED lamps. The installation face of the PCB is provided with a control device for controlling the LED lamps. The heat dissipation lampshade is fixedly arranged on the lamp cap and is provided with a plurality of heat dissipation holes. By means of the LED lamp, the heat dissipation effect is made to be better, different lighting effects of the LED lamp is achieved as well, the LED lamp can be used for different occasions, the application range of the LED lamp is broadened, and the LED lamp is enabled to have more universality.

A waste water treatment device and a method are disclosed. The waste water treatment device comprises an ozone oxidation device and a biochemical treatment device. The ozone oxidation device comprises an ozone destructor and an oxidation reactor. The biochemical treatment device comprises a two-phase expanded bed, an oxygen dissolving device and a circulating pump. An exhaust outlet at the top of the oxidation reactor is connected to a gas inlet of the ozone destructor. A gas outlet of the ozone destructor is connected to a gas inlet at the lower part of the oxygen dissolving device. A water discharging pipeline at the bottom of the oxygen dissolving device and a water discharging pipeline at the lower part of the oxidation reactor are combined and then connected to the circulating pump. The outlet of the circulating pump is connected to a water inlet at the lower part of the two-phase expanded bed. A water outlet at the upper part of the two-phase expanded bed is connected to a water inlet at the upper part of the oxygen dissolving device. The method includes: feeding waste water into the oxidation reactor firstly to subject the waste water to oxidation, and feeding the waste water into the biochemical treatment device to subject the waste water to aerobic biochemical reactions. According to the waste water treatment device and the method, reaction conditions and mass transfer conditions can be optimized, the biochemical treatment load is increased, the oxygen component in the oxidation exhaust and the excess pressure of the exhaust are fully utilized, and the treatment cost is reduced.

The invention relates to an LED lighting lamp which comprises a lamp cap, a lamp body and a heat dissipation lampshade. The lamp body comprises an installation column body and a plurality of PCBs. An anode part and a cathode part are arranged inside the installation column body and are connected with an anode end and a cathode end of the lamp cap respectively. The installation column body is provided with a plurality of pairs of installation branches in an extended mode, and each pair of installation branches comprises an anode installation branch and a cathode installation branch which are connected with the anode part and the cathode part respectively. The PCBs are respectively fixedly connected to one pair of installation branches in an inserted mode, and an anode circuit is connected with the anode installation branches and a cathode circuit is connected with the cathode installation branches. Light-emitting faces, away from the installation column body, of the PCBs are provided with a plurality of LED lamps, and installation faces, facing the installation column body, of the PCBs are provided with control devices for controlling the LED lamps. The heat dissipation lamp shade is fixedly arranged on the installation column body. According to the LED lighting lamp, the heat dissipation effect of the LED lighting lamp is made to be better, different lighting effects of the LED lighting lamp are achieved as well, the LED lighting lamp can be used for different occasions, the application range of the LED lighting lamp is broadened, and the LED lighting lamp is enabled to have more universality.

The invention provides a nitrification and denitrification two-phase expanded bed reactor and a sewage treatment process. The expanded bed reactor includes a reactor, an oxygen dissolving device, a circulating pump and ancillary pipelines; the reactor is a vertical cylindrical structure, and from bottom to top it is divided into bottom water distribution area, aerobic reaction area, secondary water distribution area, anoxic The reaction zone and the water outlet area; the aerobic reaction zone and the anoxic reaction zone are filled with small particle size fillers, the secondary water distribution area is equipped with a contraction-expansion rectification ring, and the water outlet area is equipped with a three-phase separator. Using the above-mentioned expanded bed reactor, nitrification and denitrification are carried out in one reactor, and the biochemical and oxygen-dissolving processes are completed independently. The load of biochemical treatment is high, the equipment occupies a small area, and investment and operating costs are saved.