67results about How to "Water saving is obvious" patented technology

The invention discloses a reactive dye dyeing method for a cotton fabric. The reactive dye dyeing method comprises the following steps of 1 pretreating of the cotton fabric, wherein the cotton fabric is padded in a sodium carbonate solution with the concentration of 10-100 g / L, the pickup rate is controlled to be 100%-200%, and dyeing is prepared; 2 dyeing, wherein dye liquor is prepared by utilizing liquid paraffin as a continuous phase medium for dyeing, and the cotton fabric obtained in the step 1 is placed into reactive dye / a liquid paraffin bath (dye liquor) at room temperature to be dyed for 20-60 min; 3 fixation, wherein the mixture system obtained in the step 2 is heated to 50 DEG C to 100 DEG C, and heat preservation is conducted for 20-50 min; 4 soap boiling, wherein the cotton fabric is taken out, and soaping is conducted to remove the unfixed dye on the surface of the cotton fabric. According to the reactive dye dyeing method for the cotton fabric, the liquid paraffin is selected to replace water to serve as the reactive dye dyeing medium, neutral salt is not needed for accelerating dyeing in the dyeing process, the dyeing rate of the dye is high, and the fixation rate is high.

The invention relates to a feedback control-based farmland irrigation system and method. The method comprises the steps: storing parameters of crop types, crop growth stage division, each growth stage time T, a needed soil moisture content required value X of each growth stage, a needed soil moisture content required lower limit value Y of each growth stage, and an irrigation quota Z of each growth stage into a control center computer; calculating the current growth stage of crops by the control center computer. A soil moisture content sensor is used for collecting farmland soil moisture content information, and the control center computer is used for performing analytical judgment on the soil moisture content information and weather information and then controlling irrigation, so the aim of automatically irritating farmlands can be achieved. The method is simple and efficient in implementation, is intuitive in operation and easy to understand, and is obvious in water saving; compared with an extensive irrigation method, water is saved by more than 40 percent; few-person operation or unattended operation can be truly realized, and the labor cost is greatly reduced.

The invention relates to a small-sized glass double-sided cleaning machine, belonging to the technical field of an automatic device. The small-sized glass double-sided cleaning machine is suitable for cleaning and drying the two sides of small-sized glass or similar parts such as photovoltaic glass, a high-quality cosmetic mirror, an automobile mirror, an optical lens and the like in the industrial production. The small-sized glass double-sided cleaning machine comprises a stand, a conveying mechanism, roller wheels, a cleaning device and a drying device, and is characterized in that each roller wheel is formed by a plurality of groups of rubber rollers which are wrapped by silicon rubber having elasticity in pairs up and down; gaps exist among the groups of roller wheels; chain wheel type circulating brushes of the cleaning device are arranged in the gaps among the roller wheels; and the chain wheel type circulating brushes are connected with a driving motor. The cleaning machine can be used for cleaning glass (or other similar articles) with the size range of minimum width being more than or equal to 25mm and the maximum width being less than or equal to 300mm; meanwhile, the upper surface and the lower surface can be clean and dried at the same time. The small-sized glass double-sided cleaning machine is automatic in the whole cleaning and drying process and small in occupied land area, and has the advantages of high efficiency, high speed and high cleanness; and clean water is utilized in a circulating way, so that the water is obviously saved, and the environmental pollution is not caused.

The invention aims to provide a novel method of coking residual ammoniacal liquor deamination, dephenolization, denitrification and utilization, namely a processing method of twin-tower dual-purpose distillation of coking residual ammoniacal liquor, dual-tower oxidation air-stripping to remove ammonia and nitrogen and COD reduction. The method provided by the invention has characteristics of low energy consumption, high deamination and dephenolization efficiency. And processed water can be separately used as circulating cooling water. The method comprises the following five processes: ammonia distillation for deacidification, air stripping for dephenolization, extraction for dephenolization, oxidation treatment and wastewater utilization. Residual ammoniacal liquor is processed and utilized through the above five processes. According to the above novel residual ammoniacal liquor processing method, ammonia distillation for deacidification requires no live steam, anddephenolization requires no biochemical treatment. Compression stripping dephenolization wastewater undergoes compression stripping and hydrogen peroxide two-stage oxidation and normal-pressure stripping cooling without membrane separation deep processing and then can be directly used as circulating cooling water. The method provided by the invention has protrude advantages of short flow, less investment, low cost, energy conservation and environmental protection, and can be adopted to realize zero discharge of coking wastewater and remarkable water-saving purpose for coking production.

The invention relates to a new technology of mulch planting. Mulch with a width of 2.4-3.0 meters is adopted to cover crops; the thickness of the mulch is 0.00007-0.00009mm; the upper surface of the ridge presents an arc which is low in middle and high in two sides. Compared with the traditional mulch covering technology, the new technology of mulch planting can the advantages of increasing the yield of the crops by 10-35% and greatly saving the employment cost. The new technology of mulch planting is suitable for planting watermelon, muskmelon, cucumber, green bean, carrot, turnip, Chinese cabbage, cabbage, spinach, eggplant, chilli, rape, tomato, peanut, wheat, maize, broomcorn, rapeseed, potato and the like.

The invention relates to a method of yarn bundle-shape continuous back-flow silkete, which includes the following steps: 200 to 1000 billet yarns are combined into a yarn bundle, and 1 to 36 yarn bundles are arranged for parallel running; the 1 to 36 yarn bundles continuously run on a silkete machine set and sequentially pass through an immersing and rolling alkali tank 1, a ventilating drum 1, an immersing and rolling alkali tank 2, a ventilating drum 2, an alkali-removing steam box, an alkali-removing eluting tank, a water scrubbing tank 1 and a water scrubbing tank 2 to fall into a yarn container in a wet-yarn type. The method of yarn-bundle-shape continuous back-flow silkete realizes the continuous production of yarn silkete, reduces sewage discharging amount, has the yarn-bundle running of the yarn, high production efficiency, uniform silkete quality and high yarn utilizing rate, enables the yarn silkete to be the normal preprocessing technology, and is helpful for improving the product grade of yarn dyed fabric and knitted fabric.

The invention relates to a vacuum pump and especially relates to a direct driven high-speed turbine vacuum pump and an operation method thereof. The direct driven high-speed turbine vacuum pump comprises a direct connected high-speed motor, wherein the direct connected high-speed motor is communicated with a lubricating oil station; the direct connected high-speed motor is arranged on a platform; a spindle is arranged in the direct connected high-speed motor; an impeller mechanism is arranged at one lateral end of the direct connected high-speed motor; or a left impeller mechanism is arranged at the left end of the direct connected high-speed motor, and a right impeller mechanism is arranged at the right end of the direct connected high-speed motor. The method comprises the following steps: assembling and then running at high speed. The direct driven high-speed turbine vacuum pump and the operation method thereof have the advantages that the structure is compact, the use property is promoted, the energy is saved, and the environment is protected.

The improved swing sprinkler with adjustable spraying angle is a dry commutator without water, the gear set is dry and the gears of the gear set are Austrian, so it is durable; the adjustable spraying angle swing sprinkler On the outside of each shaker nozzle (59) of the device, the right dial groove and the left dial groove with progressively increasing inclination angles of the dial (598) are respectively set in turn, and four dials (598t) are used, and every two dials Shared dialing gear with handle, the four dials (598t) are successively provided with right and left shifting grooves with increasing inclination angles, forming a high-precision, high-angle and accurate spraying angle adjustable swing sprinkler. Perfect, it solves the persistent problems of difficult reversing, unreliable and inaccurate spraying angle.

The invention discloses a factory-like high-density aquaculture system. The factory-like high-density aquaculture system comprises a culture pond water returning mechanism, a water treatment system and two or more culture ponds. The water treatment system performs water purification treatment on sewage from the culture ponds. The culture pond water returning mechanism is communicated with a microfiltration unit of the water treatment system through a pipeline, and return water discharged from the culture pond water returning mechanism is delivered to the water treatment system. The culture ponds are communicated with a sewage treatment zone solid-liquid separation device of the water treatment system through bottom sewage drain pipelines, and delivers the sewage discharged from the bottomsewage drain pipelines of the culture ponds to the water treatment system. The factory-like high-density aquaculture system has the advantages that the load of the water treatment system is reduced, and the working efficiency of the water treatment system is improved; water is purified efficiently at a low cost, and the factory-like high-density aquaculture system is suitable for factory-like high-density aquaculture.

The invention discloses a cleaning structure for a flat mop and a cleaning tool thereof. The cleaning structure comprises a working chamber comprising a side wall and a mounting opening defined by theside wall; a scraping member detachably connected to the mounting opening, wherein the flat mop stretches into the working chamber for cleaning through the scraping member, the scraping member scrapes and presses the flat mop to achieve decontamination and dehydration of the flat mop; a casing for accommodating cleaning water and introducing the cleaning water into the working chamber. The scraping member is provided with a sewage channel. The sewage channel is matched with the scraping member to discharge sewage or dirt squeezed by the cleaning mop. The working chamber is detachably installed in the casing, and the working chamber is provided with a water inlet for introducing the cleaning water into the casing, and the water inlet is equipped with a sealing part for sealing the water inlet. A latch is arranged on the working chamber or the scraping member, a clamping groove is formed in the casing at the matched position, the clamping groove comprises a pressing part and a clampingpart, and the latch is clamped in the clamping part through the pressing part to press the water inlet and the sealing part and prevent the cleaning water from entering the working chamber.

The invention relates to a garbage processor, in particular to a fully-automatic garbage processor which is used for processing household garbage in toilets. A front vertical baffle, a rear vertical baffle and a middle lateral baffle are arranged in an enclosure body; the lower part of the middle lateral baffle is provided with a motor; an output shaft of the motor is fixedly provided with a rotary cutterhead; a smashing cavity is provided with a hollow water channel; a step part at the lower part of the hollow water channel is embedded with a fixed cutter corresponding to the periphery of the rotary cutterhead; the inner edge of the upper end of the fixed cutter is provided with a water spray nozzle; the rear part of the rear vertical baffle is provided with a motor-driven elevator in movable fit with a main cover; the front part of the front vertical baffle is provided with an intelligent module circuit board; and an auxiliary cover is provided with an infrared sensor probe. The enclosure structure of the garbage processor fully considers water-proof and anticreep factors, has big smashing cavity volume and has a spraying function; and due to the structural layout of the rotary cutterhead, a cutter head and the fixed cutter, the garbage grinding efficiency is improved. By means of intelligent module control and infrared human-body sensing modes, the enclosure can be automatically opened and closed, a processing process can be easily finished without touching a machine, and the garbage processor is safe and clean.

The invention provides a water-saving drip irrigation device. The device comprises a control host, a plurality of fixed-point monitoring devices and a plurality of drip irrigation pipelines. The drip irrigation pipelines are provided with a plurality of drip irrigation devices. One drip irrigation device comprises a main pipe and a drip head. The drip head is arranged on the sidewall of the main pipe and communicates with the main pipe. The drip head is provided with a controller and a push-press device. The fixed-point monitoring devices form wireless connections with the input end of the control host. The output end of the control host is connected with the input ends of the controllers. The control output ends of the controllers are connected with the push-press devices. The device provided by the invention has an automatic drip irrigation function. The device has high automation degree and a significant water-saving effect.

The present invention discloses an optimization method for precise irrigation water use of winter wheat. Soil water content in a planed wet layer of the winter wheat in a growth period is continuouslymonitored to determine irrigation water quota and soil water content control lower limit as main irrigation water indexes. When the soil water content is higher than the water content control lower limit, no irrigation is needed; when the soil water content is lower than the water content control lower limit, weather conditions determined by weather forecast at the time and in the next few days are combined; and then according to the situations of winter wheat seedlings and growth, a comprehensive judgment is conducted to determine whether the irrigation is needed; if the irrigation is determined to be not needed, the irrigation time is postponed; and if the irrigation is determined to be needed, the irrigation is applied according to the determined irrigation quota. The method helps to suppress agricultural water resource waste and groundwater over-exploitation and improve the utilization of the irrigation water in the region.

The invention discloses a sequential control water saving toilet stool, comprising a water tank, a flushing device, a urinal and a timing controller. The water tank is provided with two flushing devices, one comprising a flushing valve and a pressure flushing pipe while the other comprising a lower pressure water pump and an assistant flushing pipe. The urinal is provided with a water retaining edge and a water guide edge around the inner edge of the urinal. The pressure flushing pipe and the assistant flushing pipe are guided to the water retaining edge and the water guide edge to form a flushing guide groove; the flushing valve is driven by a servo mechanism. The timing controller is connected electrically with the servo mechanism and the low pressure water pump. The timing controller is matched with a contact switch on the urinal. The timing controller provided by the invention starts the contact time by identifying the contact switch so as to control the pressure flushing device and the low pressure flushing device. Defecate types are differentiated through the time of the contact switch to flush respectively in urination and defecate modes. Water used to flush urination is about 0.8-1.0L and that to flush defecate is about 1.8-2.0L so that the water is saved remarkably.

The invention relates to a multifunctional high concentration stewing blanching integral pulp manufacture device. The device is a long strip shape section structure; the two ends are elliptic end covers; one end is axially provided with a feed opening and is provided with a pressure-resistance valve; the other end is axially provided with two pipe joints which are respectively a hot source pipe opening and a liquid medicine pipe opening; the outer edge part of the device is provided with a discharge opening and a pressure-resistance valve; the middle part is provided with a relief valve; the two ends of the device are respectively provided with a temperature auto-control device, a pressure auto-control device and a pH value display device so as to realize real time display when the multifunctional high concentration stewing blanching integral pulp manufacture device is running and automatically control the reaction to be operated in a set range. The multifunctional high concentration stewing blanching integral pulp manufacture device integrates the functions of heating, intenerating, stewing and blanching, thus saving a plurality of device investments, having no washing and dehydration in the middle and having the advantages of remarkable energy saving and water saving.

The invention discloses a spraying pipe capable of freely combining the area and the flow continuously improved. A commutator of a non-involute gear set is adopted; a plurality of rocking nozzles 59 are arranged in a parabola arc with different heights; a runner of each rocking nozzle is provided with a petal channel with a multi-petal plum blossom form; the rocking nozzles adopt special polyurethane TPU, are pretreated within 100 DEG C for a plurality of houses, are molded, and are subjected to aftertreatment which is the isotope irradiation treatment for a plurality of hours, so that the rocking nozzles are uniform as far as possible, and are not liable to age, harden and crack to achieve durability and long flexibility; the heights of slide blocks are in an isometric logarithmic spiral with the characteristic of the same pressure angle in each place, so that the different height positions of the rocking nozzles are uniformly pushed as far as possible to change the angle; adjusting gears 63 with worms and fan tooth adjusting buttons 62 are matched with the slide blocks; or the slide blocks are matched with adjusting arc groove fans 64 with arc pin grooves of the isometric logarithmic spiral with the characteristic of the same pressure angle in each place for uniform pushing as far as possible.

The invention relates to an adjustable and swing water sprayer which is continuously and gradually improved. A diverter of an olinkon gear seat is adopted. Multiple swing sprayers 59 at different heights are arrayed in shapes of parabolic arcs with passageways having petal-type channels. The swing sprayers are made by special polyurethane TPU and formed by pre-processing for hours at the temperature of 100 degrees. The swing sprayers are subjected to post-treatment at the temperature of 90 degrees for hour and laser processing so that the swing sprayers are prevented from hardening and cracking due to aging so that the swing arms are endurable and flexible. The height of a sliding block is an equiangular logarithmic spiral with pressure corners being the same so that different height positions of the multiple swing sprayers can be uniformly squeezed as much as possible to change angles. An adjusting gear 63 and a sectorial tooth adjusting button 62 with coarse threads are matched with the sliding block. Or, an adjusting arc-groove fan 64 of an arc pin groove of the equiangular logarithmic spiral with pressure corners being the same is matched with the sliding block so that different heights can be uniformly squeezed as much as possible.

The invention discloses a mixed ecological planting and breeding mode for zizania aquatica. The mixed ecological planting and breeding mode is realized by the steps of paddy field ditching for zizaniaaquatica planting, chicken and duck house construction, chicken and duck stocking in a zizania aquatica field, zizania aquatica leaf treatment and alternative planting in ditches and ridges. The mixed ecological planting and breeding mode has the beneficial effects that the problems that zizania aquatica leaves are polluted and the soil quality of the zizania aquatica field is reduced in currentzizania aquatica production can be solved; weeds and pests on planting ditches and dry ridges are controlled by utilizing chicken and ducks, so that not only is the input of pesticides and manpower reduced, but also the intercropping income is increased; in addition, the requirement that a zizania aquatica farmer has a very high technical level is not proposed in the method, so that it is easy forthe zizania aquatica farmer to accept the method, and the method is good in actual effect and beneficial to popularization.

The invention relates to a cleaning device for a kitchen. The cleaning device comprises a water tank and is characterized in that the bottom of the water tank is provided with an accommodating cavity, the accommodating cavity is provided with a structure capable of being opened from the outside, in addition, a rotating blade capable of rotating under the driving of an external motive power mechanism is arranged in the accommodating cavity, and a water outlet and a water inlet communicated with the water tank are arranged in the accommodating cavity. Compared with the prior art, the cleaning device has the advantages that after water is filled in the water tank, the rotating blade rotates under the driving of the external motive power mechanism, so the water in the water tank is driven to flow into the accommodating cavity through the water inlet, the water in the accommodating cavity flows back to the water tank through the water outlet, the self-circulation water flow is formed, further, cleaned objects such as vegetables, melons and fruit placed in the water tank can be cleanly cleaned, and the obvious water saving effect can be realized; and the accommodating cavity is provided with the structure capable of being opened from the outside, the rotating blade and the inside of the accommodating cavity can also be cleaned, and no sanitation dead corner exists.

A sprinkling angle-adjustable swinging sprinkler with arc chutes is a water communicating wet type commutator. A gear set is of a wet type, the gears of the gear set are restrained and highly precise. A right shifting chute and a left shifting chute, of a driving plate (598), with gradually reducing inclined angles are sleeved outside each swinging sprayer (59) of the sprinkling angle-adjustable swinging sprinkler. Four driving plates (598) are employed, and each two share a shifting gear with a handle. and a right shifting chute and a left shifting chute with gradually reducing inclined angles are sequentially arranged on each driving plate (598). Each shifting chute is a section of a logarithmic spiral line, of which the pressure angles at each part are equal to form the sprinkling angle-adjustable swinging sprinkler, with arc chutes, of which the precision is high and the angle is accurate. The problems that reversing is difficult and unreliable and sprinkling angle is inaccurate are solved.

The invention belongs to the technical field of aquaculture, and discloses an industrialized external-circulation water ecological breeding method for Oxyeleotris. Concretely, an industrialized external-circulation water ecological breeding system is adopted for breeding and comprises a breeding workshop and a water treatment system, wherein the water treatment system comprises an ecological sewage collection and treatment pool, a biological filter pool, a microbe enrichment pool and a water pump. With the breeding method, Oxyeleotris marmoratus and hybrid Oxyeleotris are selected; the stocking size is 25 to 60 g; the stocking density is 50 to 80 fries per square meter; forage fishes and an artifical compound feed are poured for feeding; and the temperature of water in the breeding workshop is controlled to be 18 to 32 DEG C. The method provided by the invention has the advantages of simple equipment, low operation cost and strong operability; the external-circulation water system has prominent ecological characteristics and significant water-saving, ecological and breeding effects; and by controlling factors or links like baits, sewage treatment and water quality, marketable fishes with a weight of 50 kg or above can be bred in one cubic of water, and the survival rate of breeding is 90% or above.

The invention discloses a silk uniformly dyeing method. The silk uniformly dyeing method comprises A, dye liquor preparation including dissolving and uniformly mixing dye liquor of dye solution and auxiliary solution in soft water according to dyeing process requirements and storing the mixtures in liquor storage barrels for standby application;, B, dye liquor conveying including mixing and inputting the dye solution and the auxiliary solution at a ratio of 5:1 into a padding liquor tank at 18-35 DEG C, C, dye liquor padding including continuously and smoothly immersing silk fabrics into the dye liquor inside the padding liquor tank to absorb the dye liquor, and rolling up the dyed silk fabrics, and D, stacking including instantly wrapping the rolled silk fabrics and shaft ends tightly with films, stacking the wrapped silk fabrics in a rotating state with a rotating speed of 4-8 r / min and an environment temperature of 15-35 DEG C for 5-24 hours. The silk uniformly dyeing method saves vapor and auxiliaries and has the advantages of being high in dye utilization rate, low in dyeing wastewater and environmentally friendly; the dyed fabrics are higher in permeability, uniformity and flatness than fabrics dyed through conventional methods.

A dry direct seeding and sprinkling irrigation cultivation method of rice in hillside non-ridge fields relates to the field of rice planting and solves the problem that an existing rice planting process has high labor consumption and water waste. The method of the invention comprises: preserving whole seedlings at a time, and sowing to a depth of 1-2 cm; covering, to be specific, in post-sowing seedling stage, covering soil with 300 ml / mu of butralin or 250 ml / mu of pendimethalin; disinfesting, to be specific, when young seedlings grow with one leaf and one core or two leaves and one core, spraying 500-600 ml / mu of 34% propanil emulsifiable concentrate; applying both seeds and fertilizer, wherein no topdressing is applied after single fertilizer application; performing sprinkling irrigation in water-requiring sensitive stage, and applying water stress in other growth stages, wherein sprinkling irrigation is performed separately in the stage of seedlings growing with 4.5 leaves, the stage of seedlings growing with (N-n+1) leaves, the stage of seedlings growing with two inverted leaves, and the full heading stage, and sprinkling quantity is not less than the rainfall of 30 mm each time, wherein N refers to total leaf age, n refers to stem internode number, and n=N / 3. The method of the invention has low labor consumption and water consumption and provides improved quality.

The invention belongs to the technical field of sanitary ware and in particular relates to a backsiphonage toilet. The backsiphonage toilet comprises an excrement basin, wherein a sewage draining exit is formed in the bottom of the excrement basin. The backsiphonage toilet is characterized in that a front-mounted backsiphonage elbow is arranged below the excrement basin and is positioned on the front side of the sewage draining exit; the upper port of the front-mounted backsiphonage elbow is connected with the sewage draining exit; a rear-mounted spraying hole is formed in the rear side of the sewage draining exit of the excrement basin and is communicated with a spraying water channel. The backsiphonage toilet disclosed by the invention has the advantages of small size, low cost, convenience in use, water saving and good deodorization effect and also has the advantages of easiness in processing, high flushing strength, water saving and deodorization performance.

The invention discloses a direct drainage toilet bowl with a deodorant valve. The direct drainage toilet bowl consists of a ball valve, an excrement discharge pipe, a urea drainage pipe and an excrement and urea flushing spray head and is characterized in that the deodorant valve which is opened and closed automatically is connected below the ball valve. The deodorant valve replaces a drain trap, and direct drainage replaces siphon drainage, so that water is saved and odor is prevented. The direct drainage toilet bowl has the advantages of remarkable water saving effect during flushing excrement and urea and good anti-odor effect.

The invention discloses a laminated filtering centrifugal diversion base, which comprises a centrifugal diversion base body and a laminating group, wherein diversion blades are uniformly arranged between the outer wall of the centrifugal diversion base body and the laminating group, and have arc-shaped structures; and one end of each diversion blade is higher than the other end. Due to the adoption of the diversion blades in the centrifugal diversion base, water current is centrifuged under the action of diversion blades while flowing through the diversion base, particles in water get far away from the laminating group, move toward the top end along the outer wall of the centrifugal diversion base and are finally concentrated on the top of a filter unit, only a small quantity of impurities are attached to the surface of the laminating group, the cleaning frequency of the laminating group is greatly lowered, filtering is more effective, the water-saving effect is more remarkable, the back flushing frequency is lowered, the filtering efficiency is increased by 30 percent and the back flushing efficiency is lowered by 20 percent under the condition of the same water quality, and a centrifugal sand-stone separator used in the conventional configuration can be saved.

The invention relates to a vertical type water saving tap, which belongs to the field of the tap water appliance. The vertical type water saving tap is characterized in that a tap body (1) is hollow, a water inlet is arranged at the bottom part of the tap body (1), a water saving and bleeding diplopore (4) is arranged at the lower part of the tap body (1), a water saving passage (17) and a water bleeding passage (30) are arranged below the water saving and bleeding diplopore (4), the water saving passage (17) is threaded with a water saving device (18), a valve core (10) is positioned above the water saving and bleeding diplopore (4), both a sealing washer (5) and a stator plate (6) are provided with diplopores corresponding with the water saving and bleeding diplopore (4), a rotor plate (7) is provided with a fan-shaped mouth, and a valve core pressing cap (12) is threaded with an upper mouth of the tap body (1). The vertical type water saving tap is a water saving tap which integrates spray rinsing, flushing and water bleeding processes into a whole and can save water up to 70 percent, and is suitable for being extensively used in washing places such as kitchens, washrooms, hotels and restaurants.

The invention discloses a greenhouse early spring arrowhead ridging and black film covering cultivation method. The greenhouse early spring arrowhead ridging and black film covering cultivation method comprises the following steps that (1), soil preparation and fertilization are carried out; (2), field modeling and ridging are carried out, specifically, the ridging height ranges from 10 cm to 12 cm, the ridging width ranges from 60 cm to 65 cm, the furrow width ranges from 25 cm to 30 cm, and the furrow depth ranges from 10 cm to 15 cm; (3), furrow irrigation is carried out, and water is irrigated along the furrows until the water just submerges the ridge surfaces; (4), black film covering and drip irrigation are applied, all ridge surfaces are covered with the black film, and drip irrigation water belts are laid between planting rows under the film; and (5), field planting is carried out. According to the greenhouse early spring arrowhead ridging and black film covering cultivation method, water and labor are saved, continuous cropping obstacles are relieved, diseases are greatly reduced, and the yield and quality are remarkably improved.

The invention provides an air pollution collecting system using filtration windmills, the air pollution collecting system comprises a plurality of filtration windmills used for air pollution adsorption, an aqueous solution for collecting air pollution on the filtration windmills, a filtering tank for containing the filtration windmills and the aqueous solution, an air inlet pipe, and an air suction pipe connected with exhaust port. The filter windmill comprises at least 5 filtering units, in the rotation process of the aqueous solution, and filtering sheets of the filtering units can automatically adjust the angle to reduce the force area, and can reset in advance to efficiently absorb fine particles in air passing through the filtering tank onto a filter net by an elastic member when the aqueous solution turns to air area. The air pollution collecting system is high in collection efficiency of the fine particles, and obvious in energy saving, and can continue to collect the fine particles and save water. The air pollution collecting system using the filtration windmills can be used for mass collection of the fine particles or other air pollution in the air.