78results about How to "Evenly distributed water" patented technology

The invention discloses a method for remedying the micro-polluted water body. The method comprises the following steps: 1) the micro-polluted water body firstly enters a first-stage water treatment area to perform sand settling and uniform water distribution; 2) the water body secondly enters a second-stage water treatment area-wetland bed, wherein the wetland bed is mainly composed of filler anda water plant, the water plant is giant reed, the filler is composed of upper filler and lower filler, the upper filler is gravel and the particle size is 5-10mm; the lower filler is the shale brick,the particle size of the shale brick is 10-60mm and the root system of the water plant grows in the filler; and 3) the water body finally enters a third-stage water treatment area to homogenize the effluent quality, and the water body can be discharged and enter the outer water body. The system has the following advantages: (1) no energy is consumed, the system is difficult to block; (2) the investment is low, the system is convenient to operate and manage; (3) the shock resistance is strong; and (4) the nitrogen-phosphorus removal rate is high and the system has a certain economic benefit.

The siphoning automatic aerating biofilter includes filter basin with filtering material, inlet channel, water outlet weir and timing water tank. It has also water outlet pipe connected to the lattices of the filter basin and water outlet tank, draining siphon pipe connected to the water seal well, water inlet siphon pipe connected to the water inlet channel, auxiliary water inlet siphon pipe connected to the water inlet siphon pipe, water inlet exhaust pipe, water inlet siphonage eliminating pipe, auxiliary water drainage siphon pipe connected to the draining siphon pipe, draining exhaust pipe, draining siphonage eliminating pipe, etc. The present invention has the advantages of completely hydraulic controlling, easy running, no need of clear water tank, no need of back flush pump, low cost, etc.

The invention discloses a composite HBF (Honess Hybrid Biological&Fixed film Technology) module reactor which comprises an anaerobic pool, an anoxic pool, an aerobiotic pool and an SBR (Sequencing Batch Reactor) pool, wherein the SBR pool comprises a first SBR pool and a second SBR pool which are connected with the aerobiotic pool at the same time. The aerobiotic pool, the first SBR pool and the second SBR pool are internally provided with enzyme floating fillers, respectively. The anaerobic pool, the anoxic pool, the aerobiotic pool, the first SBR pool and the second SBR pool are module members. The invention further provides a sewage treatment process. Based on AAO-SBR (Anaerobic-Anoxic-Oxic-Sequencing Batch Reactor), the aerobiotic pool, the first SBR pool and the second SBR pool are internally provided with enzyme floating fillers respectively as biological attaching carriers, so that the biomass of the reactor is more than 2 times of that by an activated sludge process in volume, thereby greatly enhancing the processing capacity of the reactor and simplifying the structure of the reactor.

The invention discloses a baffling composite hydrolytic acidifying reactor to request to protect peripherial water, which comprises the following parts: pond, fill, inlet pipe and outlet pipe, wherein the pond is composed of three-grade concentric circle with inlet pipe connecting outer-race distribution groove; the distribution groove is set along circumference with water hole on the groove bottom evenly to supply water; the water passes the distribution hole on the commutating board bottom, which is baffled into outer-race, inner-race and middle reacting regions; the reacting region bottom is floating sludge bed with middle region as half flexible fill region, which intercepts most of solid suspension and colloidal matter in the effluent; the solid organics is decomposed into soluble organics and decomposed further; the vent pipe is laid on the outlet groove bottom of middle reacting region, which contains outlet water.

The invention discloses a dynamic microfiltration membrane module for water treatment technique, which comprises: a filter chamber contained a micropore on wall, a recoil inlet pipe and a filter outlet pipe both on side surface, and an air-exhaust pipe on top; and a filter network folded into a concave-convex curve to fix on the front and back walls of the filter chamber. Wherein, connecting the filter chamber lower end to a backwash gas-distribution system with an aeration header and a distributing pipe connected to the gas inlet pipe; connecting supporting parts with concave-convex surface on upper and lower ends of the filter chamber to lay the filter network, fixing the firmware for concave-convex surface on the network, and setting both the outside of supporting part and firmware inside with the opposite curves as the network. The opposite water treatment technique comprises: hanging the membrane, filtering, outputting water, and clearing the dynamic membrane. This invention enhances the membrane packing density, reduces cost, and prolongs membrane service lifetime.

The invention relates to an integrated advanced wastewater treatment device and process. A sludge reflowing pipe is arranged at the bottom of a settling region, wherein one end of the sludge reflowing pipe is connected with a flocculation region, a sludge discharging pipe is arranged at the other end of the sludge reflowing pipe, and a filter cloth filtering region and a disinfecting region are arranged up and down and are adjacent to the settling region. Wastewater enters a mixing region through a wastewater inlet pipe, enters the flocculation region through a first water passing hole after being mixed, and enters the settling region through a second water passing hole after being flocculated; supernate overflows through an effluent weir after sludge and wastewater are separated through settling in the settling region, and enters the filter cloth filtering region after passing through a grating plate, effluent enters the disinfecting region from meshes in the bottom through a wastewater collecting tank after being filtered, and discharged through a wastewater outlet pipe through a third water passing hole after being disinfected, and a sludge part reflows to the flocculating region through a sludge reflowing pipe, and is partially discharged through the sludge discharging pipe. The process provided by the invention is reasonable in procedures; the device is compact in integrated design, saving in occupation area, less in head loss and less in chemical adding amount.

The invention relates to a method and a device for water feeding and water draining of a rectangular cultivating pond of young panax. A water feeding pipe and a water draining pipe are arranged in a rectangular pond body along the diagonal direction respectively, the water feeding pipe is arranged at one corner of the rectangular pond body, and the water draining pipe is arranged at the position diagonal to the corner where the water feeding pipe is arranged, so that the path of the water flow is extended, and the residence time of the water feeding in the pond is prolonged correspondingly; aplurality of rows of swirl nozzles are arranged on the wall of the water feeding pipe along the vertical direction, each row includes three swirl nozzles facing towards three directions inside the pond, and the row of the swirl nozzles in the middle face towards the diagonal direction of the pond; the water draining pipe is of inner and outer casing pipe structure in which the water level can be adjusted, the height of the water draining port on the inner pipe can be controlled through moving the inner pipe of the water draining pipe up and down to adjust the water level in the pond. The method disclosed by the invention can effectively reduce the volume of a stagnant water area in the pond, improve the water qualiy and the survival rate as well as the growth rate of the young panax, thereby realizing the effects of separation of sewage rows, reduction of pressure of purification treatment of discharge water and secondary utilization of upper layer water draining in the pond.

The invention discloses a household waste inventory heterotopic aerobiotic strengthening stabilization system and method, and belongs to the technical field of environment protection. The system comprise the following units that a parallel gallery unit, a drainage and air distribution unit, cover films and a capillary water distribution unit, wherein the parallel gallery unit is located on a dug object placement site and composed of N longitudinal partition walls and transverse partition walls perpendicular to the longitudinal partition walls, the transverse partition walls and the longitudinal partition walls form unit galleries of which the two ends are provided with outlets, and the N longitudinal partition walls and the transverse partition walls form 2(N-1) unit galleries to form theparallel gallery unit; the drainage and air distribution unit is arranged on the terrace of the unit galleries; the cover films are arranged at the tops of the unit galleries and can be folded or unfolded; and the capillary water distribution unit is arranged above the parallel gallery unit. By adopting the aerobiotic strengthening stabilization system, the stabilization cycle can be effectively shortened, the target that waste inventory dug objects are quickly and stably pre-processed within one week is achieved, and the follow-up sorting efficiency and the resource utilization technology efficiency are improved.

The invention discloses a regional economy department water distribution balancing method and system. The method comprises the following steps: acquiring supply and demand analysis data of each waterconsumption subject; constructing a regional value objective function according to the supply and demand analysis data; constructing a regional water utilization fairness objective function accordingto the supply and demand analysis data and the regional value objective function; constructing a regional economic department water distribution balance optimization model by adopting the regional value objective function and the regional water utilization fairness objective function; adopting a non-dominated sorting genetic algorithm with an elitist strategy to optimize and solve the regional economic department water distribution balance optimization model to obtain an optimal strategy; and spatial distribution of the water resource allocation result of the regional economy department is realized according to the optimal strategy. The method can optimize and coordinate the water consumption among the industries, realizes water consumption balance among the industries, reasonably configures the water consumption, and provides important support for a water management department to reasonably arrange a water consumption plan.

The invention provides a novel pollution-free water tank which comprises a water tank body, a water delivery pipeline, a water distributing main pipe, a water outlet chamber water inlet pipeline, a reverse flushing pipeline, a drain pipeline and a water outlet pipeline, wherein the water tank is divided by a partition plate into a left chamber and a right chamber, namely a water delivery chamber and a water outlet chamber, the water outlet chamber water inlet pipe is connected with the water distributing main pipe, the water outlet of the water outlet chamber water inlet pipe is communicated with the water outlet chamber, the water outlet chamber water inlet pipeline is provided with a control valve, the reverse flushing pipeline comprises a controlling valve, a water supply pump set and aconnecting pipeline, the connecting pipeline is connected with the water distributing main pipe and provided with the controlling valve, the water supply pump set is connected with the connecting pipeline and used for supplying water to the water distributing main pipe, the drain pipeline is arranged on a bottom plate of the water tank, located below the water outlet chamber and used for drainingthe water outlet chamber, the drain pipeline comprises a drain pipe and a drain control valve, the water outlet pipeline comprises a water outlet pipe and a water outlet valve, the water outlet pipeis communicated with the water outlet chamber, and the water outlet valve is arranged on the water outlet pipe.

The invention discloses a dynamic microfiltration membrane module for water treatment technique, which comprises: a filter chamber contained a micropore on wall, a recoil inlet pipe and a filter outlet pipe both on side surface, and an air-exhaust pipe on top; and a filter network folded into a concave-convex curve to fix on the front and back walls of the filter chamber. Wherein, connecting the filter chamber lower end to a backwash gas-distribution system with an aeration header and a distributing pipe connected to the gas inlet pipe; connecting supporting parts with concave-convex surface on upper and lower ends of the filter chamber to lay the filter network, fixing the firmware for concave-convex surface on the network, and setting both the outside of supporting part and firmware inside with the opposite curves as the network. The opposite water treatment technique comprises: hanging the membrane, filtering, outputting water, and clearing the dynamic membrane. This invention enhances the membrane packing density, reduces cost, and prolongs membrane service lifetime.

The invention discloses a novel membrane filtering system which comprises a membrane shell, membrane elements fixed in the membrane shell and end covers for sealing two ends of the membrane shell. The novel membrane filtering system is characterized in that two ends of the membrane shell are provided with water inlets; at least two membrane elements are arranged; a central produced water collecting tube is arranged at the center of the membrane shell in a running through way; the central produced water collecting tube passes through the membrane shell and the centres of the end covers and passes through the centres of the membrane elements; a filtered water guiding device is mounted on the central produced water collecting tube; bypass distribution tubes are formed between outer walls of the membrane elements and inner walls of the membrane shell; and the opening end of the water inlet is connected with the bypass distribution tubes. The novel membrane filtering system provided by the invention has the characteristics of simple structure, low cost, uniform water distribution of the membrane elements, greatly reduced cross contamination possibility, easiness in processing and capability of greatly increasing sewage filtering efficiency.

The invention discloses an integrated oil and turbidity removing device which comprises a device body; a clarification zone is arranged at the upper part of the device body, and a mud settling zone isarranged at the lower part; symmetrical mud collecting hoppers are arranged under the mud settling zone; a flocculation reaction chamber is divided into a first flocculation reaction chamber and a second flocculation reaction chamber; the first flocculation reaction chamber is embedded in the second flocculation reaction chamber and is communicated with the second flocculation reaction chamber through the open lower end of the first flocculation reaction chamber; a slag collecting hopper is connected under the second flocculation reaction chamber; a water outlet is formed above the second flocculation reaction chamber and is close to the symmetrical mud collecting hoppers; the symmetrical mud collecting hoppers comprise two symmetrical mud hopper cone plates; an included angle between each of the mud hopper cone plates and a horizontal plane is 45 degrees; a roof structure with an included angle of 90 degrees is formed between the two mud hopper cone plates. The integrated oil and turbidity removing device disclosed by the invention has the benefits that all the functions of a chemical oil remover and a high-speed filter are combined, and the floor area is reduced.

The invention relates to complete countercurrent closed cooling tower with air inlets on an upper and a lower parts. A tube bundle is arranged on the upper part of the closed cooling tower, and fillers are arranged on the lower part. A fan is arranged on the top of the tower. A water collection disc is arranged on the bottom of the tower. The upper part of the tube bundle is provided with a water distributor. The water collection disc is connected with the water distributor by a pump. The upper and the lower parts of the two lateral sides of the cooling tower are separately provided with two air inlets-the upper air inlet and the lower air inlet. The other two lateral sides and a channel separator form an air exhaust channel. The air that enters into the cooling tower from the upper air inlet and flows downwards, after the air passes through the tube bundle, the air meets the air that enters into the cooling tower from the lower air inlet, flows upwards and passes through the fillers. The direction of the air is changed in the middle of the cooling tower. The air flows upwards through the air exhaust channel and is discharged from the top of the cooling tower. The air in the fillers flows along a reverse direction with the spray water which flows from top to bottom. The air in the tube buddle flows along a same direction with the spray water and flow along a reverse direction with the cooled fluid in the tube buddle. The countercurrent closed cooling tower can use pool typed water distribution system. The closed cooling tower can increase the flow area and the flow quantity of the air. The water distribution is uniform, and the effects of the heat transfer and mass transfer are improved.

The invention discloses a continuous casting secondary cooling water spraying strip base pipe automatic water distributing device which comprises a main pipeline, a base pipe and spraying strips. The main pipeline is connected with the middle of the base pipe, the spraying strips are distributed and connected on the base pipe evenly, and a water distributing baffle is arranged in the base pipe and at the connecting position of the main pipeline and the base pipe. The invention further discloses a machining method of the continuous casting secondary cooling water spraying strip base pipe automatic water distributing device. By means of the device, water quantity can be distributed equally, casting blanks can achieve an even cooling effect, inner and surface quality of the casting blanks can be improved, and yield of products is improved.

The present invention discloses a horizontal sedimentation tank with a sludge pump house. The horizontal sedimentation tank comprises several groups of sedimentation tank units, each of the sedimentation tank units is successively provided with: a water inlet region, a precipitation region, a sludge discharge region for discharging sludge and a water outlet region for discharging precipitated water; a sludge hopper is formed within the sedimentation region, the sludge discharging region is further provided with a sludge discharge groove, one end of which is connected to the sludge hopper, and another end of the sludge discharge groove is connected to a sludge external reflux pump house for external refluxing and a residual sludge pump house for discharging excessive sludge via a sludge discharge pipe. Sludge scrapers for scrapering the sludge are provided within the discharge sludge groove and both sides of an inlet. The horizontal sedimentation tank with the sludge pump house disclosed by the present invention can meet the influent water quality, the water amount change and various override working conditions, and engineer lands and construction costs are saved to the maximum extent.

The invention provides a kitchen waste filter liquid oil removal tank and an oil removal system thereof, wherein the kitchen waste filter liquid oil removal tank comprises a tank body; a water distribution device and a heating device are arranged in the tank body; an oil level observation device is arranged outside the tank body; the water distribution device comprises a liquid inlet pipe arrangedon the tank body; one end of the liquid inlet pipe is sequentially connected with a bent head and a different-diameter pipe; the top of the different-diameter pipe is provided with a support frame; areflecting plate is arranged on the support frame; a gap is formed between the reflecting plate and the different-diameter pipe. The kitchen waste filter liquid oil removal tank provided by the invention has the advantages that the water distribution is uniform; the energy consumption is reduced; meanwhile, the observation of the oil level in the tank body is convenient; the water content in discharged oil is low.

The invention provides a novel micro-electrolysis unit for treating oily wastewater. The novel micro-electrolysis unit comprises a cylinder, wherein the cylinder sequentially comprises a water inlet area, a reaction area and a water collection area from bottom to top; the water inlet area comprises a conical water distribution perforated plate, a horizontal circular perforated plate, a circular aeration disc and an air inlet pipe; the conical water distribution perforated plate is arranged at the bottom of the cylinder; the horizontal circular perforated plate is arranged above the conical water distribution perforated plate; the circular aeration disc is arranged below the conical water distribution perforated plate; the air inlet pipe penetrates through the conical water distribution perforated plate and is connected with the circular aeration disc; aeration holes are uniformly formed in the circular aeration disc; a water inlet pipe is further arranged and connected with the centerof the bottom of the cylinder; the outer edge of the lower end of the conical water distribution perforated plate is connected with the inner wall of the cylinder; and a first opening and a second opening are uniformly formed in the conical water distribution perforated plate and the horizontal circular perforated plate. The novel micro-electrolysis unit disclosed by the invention is simple in structure and long in service life, and the problems such as hardening and passivating of packing and blockage of the packing in the traditional micro-electrolysis technology can be effectively reduced or avoided.

The invention relates to a water-distributing device for a large-size artificial wetland sewage treatment system. A plurality of water-distributing tanks are constructed on the outer edge of an adjusting tank; the water-distributing tanks are in one-to-one correspondence with wetland units; a water inlet pipe is mounted on a wall of the adjusting tank; a discharging pipe is arranged at the bottom of the adjusting tank; each of the water-distributing tanks comprises a front unit of water-distributing tank and a rear unit of water-distributing tank; each front unit of water-distributing tank is separated from the adjusting tank through a wall; a water inlet of water-distributing tank is arranged on the wall; a water-distributing electrically operated valve is mounted at the water inlet of water-distributing tank; each front unit of water-distributing tank is communicated with the adjusting tank through the water inlet of water-distributing tank; each rear unit of water-distributing tank is separated from each front unit of water-distributing tank through the wall; a triangular weir is arranged on the wall; an adjusting baffle is mounted on the triangular weir; each rear unit of water-distributing tank is communicated with each front unit of water-distributing tank through the triangular weir; and a water-distributing pipeline is mounted in each rear unit of water-distributing tank. From pre-treating facilities to the artificial wetland main processing units, water can be uniformly distributed and reaeration is sufficient, so that the efficient treating capacity of the whole artificial wetland system can be brought into play.

The invention discloses an anoxic tank water distribution system and method for integrated domestic sewage treatment equipment. The water distribution system mainly comprises a water pre-distribution area, a water distribution area, a water distributor and a water collection area. The water distribution method comprises four stages of premixing, gravity water distribution, upward water distribution and sludge backflow mixing. According to the water distribution system and method, gravity water distribution is adopted, the energy consumption of the system can be saved, uniform water distribution is guaranteed, sludge deposition is prevented, and the carbon removal, nitrogen removal and phosphorus removal effects are improved.

The invention discloses a low-pulse inclined plate sedimentation device which comprises a sedimentation tank, an inclined plate group, a perforated water collecting pipe and a perforated sludge discharge pipe, a clear water area, an inclined pipe area, a water distribution area and a sludge deposition area are sequentially arranged in the sedimentation tank from top to bottom, the perforated water collecting pipe is transversely arranged in the clear water area, the inclined pipe area is fixedly provided with the inclined plate group, one side of the water distribution area is provided with a water inlet, and the other side of the water distribution area is provided with a water outlet; and a perforated sludge discharge pipe is transversely arranged in the sludge deposition area. According to the sewage treatment device, the perforated plate is arranged, so that particles uniformly fall into the next-stage space through the filter holes in the downward sliding process, are subjected to convection collision with new flocculated sludge in the next-stage space, continuously grow under the action of contact flocculation to form large-particle precipitates, and further fall into the sludge accumulation area under the action of gravity to be discharged; sludge is effectively prevented from being accumulated between the inclined plates, and the sedimentation efficiency is improved.

The invention relates to a riverbank-type tail water treatment system, which is located at riverbank of the tail water discharge port of an urban sewage treatment plant and comprises a treatment pond, wherein the surface facing to water, of the treatment pond is a water-permeable outer wall; a partition is arranged in the treatment pond; the partition divides the treatment pond into an A-level ecological treatment region and a B-level ecological treatment region; water passing holes are formed on the partition and at the bottom of the treatment pond; a water-permeable supporting clapboard is arranged on the horizontal surfaces of the water passing holes inside the treatment pond; a water passing channel is formed in the space between the supporting clapboard and the base of the treatment pond; and a sewage inflow pipe and a sewage distribution device are arranged in the A-level ecological treatment region. The tail water treatment system has the advantages of simple structure, long service life, low maintenance cost and no occupied factory area; in the tail water treatment system, a large-resistance water distribution system is applied in the deep purification of the tail water soas to realize uniform water distribution, the tail water is further intercepted and purified before entering the river, the emission mode of the tail water is changed, the ecological influence on a river channel caused by concentrated tail water discharge is reduced; and the tail water treatment system can be combined with river regulation engineering to be used as the bank hydrophilic corridor and landscape.

The invention provides a water distribution and collection tank of a rectangular sedimentation tank while entering and exiting at the same time. The water distribution tank is composed of main wall, middle wall, left wall, bottom wall, deflector, water inlet, water distribution pipe and air release pipe. The side-in and side-out rectangular sedimentation tank water distribution and collection tank of the present invention is set along the entire length of one side of the sedimentation tank. Through the application of small-diameter water distribution pipes and secondary water distribution tanks, the purpose of uniform water distribution and uniform water collection can be achieved, and the water can be carried The air bubbles can be released through the release pipe, which ensures the settlement effect of the sedimentation tank and makes the effluent water quality better.

The invention discloses a maintenance-free rural domestic sewage treatment device, and relates to the field of domestic sewage treatment. The maintenance-free rural domestic sewage treatment device comprises a sand settling pond, a pump I, a reactor I, a pump II, a reactor II, a pump III, a drain pipe, an electric control cabinet and a remote monitoring system. The electric control cabinet is connected with the pump I, the pump II and the pump III, the sand settling pond, the pump I, the reactor I, the pump II, the reactor II, the reactor III and the drain pipe are sequentially connected withone another, the reactors are used for accommodating biological carriers, microorganisms can be attached to the biological carriers, and the remote monitoring system is used for monitoring water levelprotection heights of the reactors. The maintenance-free rural domestic sewage treatment device has the advantages that water can be uniformly distributed without dead spaces, can be quickly drainedand re-aerated and can be sufficiently uniformly re-aerated, biological film cultivation procedures can be omitted, the maintenance-free rural domestic sewage treatment device can run in a programmedmanner, and full-automatic unattended operation further can be implemented; the water level protection heights of the reactors can be remotely monitored, so that the biological carriers can be timelyreplaced or cleaned, and the maintenance-free rural domestic sewage treatment device is high in organic load impact resistance.

The invention discloses a denitrification filter tank which comprises a denitrification filter tank body, a water inlet pipe, a mixing tank, a water distribution channel, a water distribution weir, a water outlet channel, a back-washing air blower, a back-washing water pump and the like. According to the denitrification filter tank provided by the invention, uniform water distribution of the denitrification filter tank body is realized through the design of the water distribution channel, the water distribution weir and a gate, and an input water source is uniformly distributed; and by arranging a feed forward-feedback composite control system, accurate feeding of a carbon source is achieved, the operation cost is reduced, and the management complexity is simplified. In addition, the problems of filler hardening, low concentration of a biological membrane of a filter material layer, low denitrification load, easy generation of air resistance and the like which exist for a long time in the prior art are solved, and the effluent quality is greatly improved.

The invention belongs to the technical field of kitchen waste wastewater treatment, and particularly relates to a kitchen waste wastewater treatment system and a treatment process thereof. The system comprises a residue slurry tank, a three-phase separation unit, an adjusting tank, an air floatation tank and a biochemical tank which are communicated in sequence, and the slag slurry tank is used for mixing kitchen waste wastewater to be treated with activated sludge. The residue slurry tank can control odor before the kitchen waste water enters the treatment process and is convenient for dehydration separation, the activated sludge and the kitchen waste water can adsorb the oil phase in slurry after being combined, and the kitchen waste water is mixed with the sludge and a first flocculating agent, so that the dehydration efficiency can be further improved. The system can control the odor in the kitchen waste wastewater, and simplifies the treatment process of the kitchen waste wastewater.

The invention discloses a re-drying method for keeping aroma substances of tobacco leaves. The re-drying method comprises the following steps: carrying out ultrasonic atomization pre-dampening treatment on the tobacco leaves; carrying out ultrasonic atomization vacuum moisture regaining treatment on the tobacco leaves; atomizing and moistening the tobacco leaves; threshing and air-separating the tobacco leaves; and carrying out microwave redrying treatment on the tobacco leaves. According to the re-drying method for keeping aroma substances of tobacco leaves, ultrasonic atomization pre-dampening is beneficial to reducing the subsequent dampening intensity and reducing the aroma loss; low temperature and high humidity are adopted for ultrasonic atomization vacuum moisture regaining to improve the humidifying effect, characteristic aroma substances of tobacco leaves are reserved, and tobacco leaf breakage is reduced; low-temperature redrying is achieved through microwave redrying, the redrying time is shortened, fragrant substance losses are small, leaf moisture losses are uniform, and tobacco leaf shrinking is reduced; and through the steps of ultrasonic atomization pre-moisture regaining, ultrasonic atomization vacuum moisture regaining, atomization leaf moistening and microwave drying and redrying, the loss of fragrant substances of tobacco leaves is reduced while the redrying processing effect is guaranteed, and the quality of the redried tobacco leaves is improved.

The invention discloses high-density sedimentation internal circulating integrated sewage treatment equipment and relates to the field of sewage treatment technology. The sewage treatment equipment comprises a high-density floc settling device, an anaerobic reaction device, an aerobic reaction device and a settling device. according to the sewage treatment equipment, a deflector is arranged in the high-density floc settling device, so as to change the flow state of fluid and avoid generation of floc settling; a jet water distributor is added in the anaerobic reaction device to avoid short flow of sediment water from the high-density floc settling device; under strong impact of jet flow, sludge at the bottom of the anaerobic reaction device is completely mixed with sewage, and no dead angle is generated during a stirring process, so that uniformity of water distribution and complete reaction are guaranteed; the sewage treatment equipment has a remarkable effect in small-scale sewage treatment, and can be applied to treatment of domestic sewage and industrial sewage as well as to nitrogen and phosphorus removal processes; since four devices are designed to be a whole, the structure of the equipment is compact and investment cost and operation cost are reduced.

The invention discloses a low-pollution water quality deep purification system. The low-pollution water quality deep purification system comprises a first-stage treatment unit and a second-stage treatment unit, the second-stage treatment unit comprises an even water distributing system with a water distributing pipe set, and the water distributing pipe set comprises a first water distributing pipe with a plurality of water distributing sub-pipes, a plurality of second water distributing pipes, a plurality of first overflow vertical pipes and a plurality of second overflow vertical pipes. The water distributing sub-pipes are connected with the second water distributing pipes; the first overflow vertical pipes are identical in length and are connected with the water distributing sub-pipes in a one-to-one correspondence mode; the upper ends of the water distributing sub-pipes except for the uppermost water distributing sub-pipe are rotationally connected with the lower ends of the second overflow vertical pipes in a one-to-one correspondence mode, and the adjacent first overflow vertical pipes and second overflow vertical pipes are connected through first overflow inclined pipes. Therefore, the low-pollution water quality deep purification system has the advantages of being even in water distribution, effectively removing algae, organic matter, nitrogen and phosphorus in low-pollution water and the like.

A moderate temperature UASB reactor water distribution device in diameter of more than 15 meter comprises a moderate temperature UASB reactor, a plurality of U shaped water distribution branch pipe sets (1) at the bottom of the moderate temperature UASB reactor, wherein a branch pipe (7) on the U shaped water distribution branch pipe sets (1) belong the moderate temperature UASB reactor bottom range is connected with a water inlet manifold (8). The water distribution device is especially suitable for the moderate temperature UASB reactor in diameter of equal to or more than 15 meter and the water distribution at the bottom of the reactor is uniform and the water power rotary current is quickly formed and the water is mixed and the full-tank homogeneration effect is good; when the individual branch pipe is blocked, the on-line clear is easily realized; when the large-volume steeliness column shaped moderate temperature UASB reactor using the technique is in regular service, the COD average removal rate is stably above 70% and the firedamp generation index is 0.5m3 firedamp / KgCOD.