132results about How to "Improve water utilization" patented technology

The invention provides a terrestrial heat tail water treating process which comprises the following steps: (1) controlling the tail water temperature after the terrestrial heat water is subjected to heat energy gradient utilization to be less than 45 DEG C; (2) aerating the terrestrial heat tail water by using an aeration tower; (3) flowing the aerated terrestrial heat tail water through a manganese sand filter to be filtered; (4) carrying out membrane integrated treatment on the filtered terrestrial heat tail water by using a double-membrane method process; (5) carrying out boron selective resin absorption treatment on the reverse osmosis water; and (6) filtering the effluent subjected to boron removal by using an active carbon filter and conveying to a use point. Aiming at the harmful ingredients and pollutant types in terrestrial heat tail water, the invention integrates a plurality of water treatment unit techniques, realizes integration and optimization of process systems, is wide in water quality application range of the terrestrial heat tail water, advanced in process and reliable in technique, and has practical popularization and application values in development and utilization in terrestrial heat tail water, and as a result, significant social, economic and environmental benefits are achieved.

A closed cyclic utilization method for production water of monoammonium phosphate, is suitable for a dihydrate pulp wet-process phosphoric acid technology and an ammonia neutralization fluidized drying phosphate fertilizer production system. A production water cyclic system mainly comprises a clear water recovery pond, a sewage settling basin, a settlement and overflow groove, a water flushing and distribution tank, a thick slurry groove, a round plate filter, an extraction tail gas washing tower, a dried tail gas washing tower. Multi stage closed cyclic utilization is preformed on sewage, and primary water consumed by per ton product is 2.5-2.8t, in order to supplement water entering into the product or phosphogypsum and lost by evaporation. The method provided by the invention resolves problems of a lot of sewage and difficult treatment, which puzzles a monoammonium phosphate production enterprise for a long time. The method has advantages of simple technology process, good sewage treating effect, small technology equipment and investment, low personnel labor intensity and high water utilization rate. The method can effectively save water resource, the water consumption of monoammonium phosphate product is reduced to 2.5-2.8t per ton product from 20t per ton product. The method implements closed cyclic utilization for production water of monoammonium phosphate, and zero discharge of sewage.

The invention relates to an intensive ecological culture method for trachidermus fasciatus. The intensive ecological culture method specifically includes the steps of culture pond preparation, biological film fish nest distribution, biological film culture, pond ecosystem establishment and pond ecosystem maintenance. The intensive ecological culture method for the trachidermus fasciatus overcomes the shortcomings of low trachidermus fasciatus culture density, high death rate, low growth speed, waste of water, ponds and manpower resources and the like in existing trachidermus fasciatus culture.

The invention discloses a washing machine inner cover with spraying and filtering functions and a washing machine. The washing machine inner cover comprises an upper cover and a lower cover, wherein a spraying water cavity is arranged between the upper cover and the lower cover and is communicated with a circulation water inlet, the lower cover is provided with spraying holes, and a circulation water filtering device corresponding to the spraying holes is detachably arranged between the upper cover and the lower cover. An accommodating space communicated with the circulation water inlet is formed in the spraying water cavity through buckling the upper cover and the lower cover, and the circulation water filtering device is detachably arranged in the accommodating space. According to an inner circulation system of the washing machine, a water discharging opening formed at the bottom of an outer barrel sequentially passes through a circulation water pump and a circulation water path to reach the circulation water inlet arranged at the upper part, the circulation water inlet is formed in an outer barrel cover, and when the inner cover is closed, the circulation water inlet is communicated with the spraying water cavity. The washing machine inner cover has the characteristics that the spraying range is wide, the utilization rate of spraying water is high, and the spraying water can be filtered; in addition, the structure is simple, the production cost is low, and the use and the dismounting are convenient.

The invention discloses an electric steaming tank and a water supplementing control method. The water supplementing control method includes acquiring actual relative humidity parameters of the insideof a cavity of the electric steaming tank; computing target water supplementing quantities according to preset target humidity, target temperatures and the actual relative humidity parameters; computing water supplementing durations according to the obtained target water supplementing quantities and water supplementing speeds of a water supplementing device; automatically adjusting working modes of the electric steaming tank according to the water supplementing durations. The electric steaming tank and the water supplementing control method have the advantages that water supplementing quantities can be automatically regulated according to cooking requirements, and accordingly food cooking taste can be effectively improved.

The invention discloses an energy-saving water-saving safe-water-quality medical reverse-osmosis pure water system which comprises a primary reverse-osmosis pure water device provided with a water inlet, a pure water outlet and a concentrated water outlet, wherein the water inlet is connected with a high-pressure pump; the concentrated water outlet is connected with a concentrated water recovery device; the concentrated water recovery device comprises a shell and a filtering membrane arranged in the shell; the shell is provided with a recovery water outlet and a wastewater outlet; and the recovery water outlet is connected with the inlet of the high-pressure pump through a pipeline. The energy-saving water-saving safe-water-quality medical reverse-osmosis pure water system can treat the concentrated water, which can only be discharged as wastewater, into a high-quality influent water source for the primary-reverse osmosis pure water device by using the surplus pressure of the concentrated water; and concentrated water is subjected to one-step primary reverse-osmosis treatment to obtain the medical pure water with stable and reliable quality. The system has the advantages of low energy consumption and lower tap water consumption, obviously lowers the medical wastewater treatment cost, and has obvious economic and social benefits.

The invention discloses an energy-saving micro-concentrated-water reverse osmosis device and a control method thereof. The energy-saving micro-concentrated-water reverse osmosis device comprises a water way device and a circuit device, wherein the water way device comprises a municipal tap water inlet, a first-stage filter element, a second-stage filter element, a third-stage filter element, a booster pump and a reverse osmosis membrane element which are connected sequentially through a pipeline; a pressure reducing valve is arranged on the pipeline between the municipal tap water inlet and the first-stage filter element; a water inlet control valve and a third tee joint are arranged sequentially on the pipeline between the third-stage filter element and the booster pump; water boosted by the booster pump passes the reverse osmosis membrane element and is divided into a purified water way and a concentrated water way. The energy-saving micro-concentrated-water reverse osmosis device solves the problems of backflow of concentrated water and limit of concentrated water emission, increases the water utilization rate and improves the usability of the reverse osmosis membrane element; the performance of the reverse osmosis membrane element is improved by means of a flushing mode, the service life is prolonged, the water saving effect is guaranteed, and a test proves that higher than 50% of the water utilization rate can be guaranteed.

The present invention is concerned with the improvement of aghcobiological traits in plants. More specifically, it relates to a plant cell comprising in its chloroplasts enzymatic activities for converting glycolate into malate. Preferably, said plant cell comprises a first polypeptide having glycolat oxidase activity, a second polypeptide having malate synthase activity and a third polypeptide having catalase activity or a first polypeptide having glycolat dehydrogenase activity and a second polypeptide having malate synthase activity. Also encompassed is a plant comprising said plant cells as well as seeds obtainable from the said plants. The present invention, furthermore, relates to a method for producing a transgenic plant or a plant cell having an increased water use efficiency or increased yield. The present invention contemplates polynucleotides comprising a combination of nucleic acids encoding the aforementioned polypeptides as well as vectors comprising the polynucleotides and uses thereof.

The invention belongs to the technical field of purifying agent, in particular to an environment-friendly nanometer purifying agent and a preparation method thereof, and the nanometer purifying agent is prepared from the following raw materials by mass percent: 50-75% of palygorskite, 10-30% of activated carbon, 5-25 % of aluminum sulfate, 5-10% of fatty acid polyethyleneglycol and 5-10% of silane coupling agent. The method comprises the following steps: putting the palygorskite in a bucket and adding dispersing agent polycaprolactone glycol ester and water to prepare the palygorskite pulp; dehydrating, drying and crashing and then baking, adding a silane coupling agent for mixing and stirring after baking, baking again after stirring; mixing the baked palygorskite with activated carbon evenly; adding water and the aluminum sulfate for pelleting; and finally drying to obtain a finished product. The invention has good process effect and low production and manufacturing cost, can achieve the aim of comprehensive treatment of various water resources and improving water circulation, and can be recycled.

A pipe-type hydroelectric generator set, which is composed of a plurality of power generation unit pipes 3, each of the power generation unit pipes 3 has pipe bodies 5 connected to flanges 4 at both ends, and the pipe body 5 is arranged according to the axial direction of the pipes. An impeller shaft 6 is provided, and the two ends of the impeller shaft 6 are respectively installed in the pipeline through a bracket 7, and three blades 8 are evenly arranged on the circumference of the impeller shaft 6, and one end of the impeller shaft 6 is passed through a reversing transmission pair 10 It is connected with the rotor shaft 11 of the generator 9 installed on the pipe body 5 , and there is a seal 12 between the generator rotor shaft 11 and the shaft hole of the pipe body 5 . The device is suitable for being installed under river dams, streams in mountainous areas, under gully dams, etc., and can make full use of hydropower resources to generate electricity.

The invention discloses a drill bit with string-shaped water pores and relates to the drill bit with a novel hydraulic structure. The drill bit comprises a drill bit body and cutting structures arranged on the drill bit body, cutting teeth are arranged on the cutting structures, chip grooves and flow paths are arranged among the cutting structures, the water pores are arranged in the flow paths, at least one of the water pores is the string-shaped water pore, the outlet of the string-shaped water pore is formed by at least two circles or ellipses in communication, and the longitudinal section shape of each string-shaped water pores in the lengthwise direction is fan-shaped or nearly fan-shaped in a manner of being larger in the opening and smaller at the bottom. By the arrangement, problems that drilling performance of the drill bit is lowered and service life of the drill bit is shortened due to unreasonable hydraulic structure of the drill bit in rapid drilling and high-temperature drilling are solved.

The invention discloses a tail water treatment and circulation system of a shrimp aquaculture pond. The tail water treatment and circulation system comprises an outdoor aquaculture water pretreatment system and an indoor aquaculture circulating water treatment system, wherein the outdoor aquaculture water pretreatment system is characterized in that tail water of the shrimp aquaculture pond is precipitated in a precipitation tank to remove solid waste; the precipitated water is subjected to aeration treatment for 2-3 hours; color-removing deodorant is added into the water after the aeration treatment; the color-removed and deodorized water is filtered through a filter screen to remove particle impurities with the particle size being larger than 100 micrometers and then enters the indoor aquaculture circulating water treatment system; the indoor aquaculture circulating water treatment system is characterized in that the filtered water is pumped into a water return pond; the water treated by the water return pond is pumped into a biological filter through a circulating pump; the water treated by the biological filter directly enters the shrimp aquaculture pond. The tail water treatment and circulation system saves water resources, reduces the waste of the water resources, improves the water utilization rate by more than 99%, reduces harmful substances in the treated water, and achieves green and harmless products.

The invention discloses an adjustable irrigation device for municipal greening belts. The device comprises a base seat, rolling wheels are installed at the bottom of the base seat, a water tank is arranged on the top of the base seat, a supporting plate is fixedly arranged on the right side of the top of the base seat, the right end surface of the supporting plate is fixedly provided with a sliderail, the right side of the slide rail is slidably connected with a lifting plate, the right end surface of the lifting plate is fixedly connected with a spray head, the left end surface of the supporting plate is fixedly provided with a water pump, the water inlet end of the water pump is connected to the inner bottom of the water tank through a water pipe, and the water outlet end of the water pump is connected with the spray head through a hose; and the right end surface of the supporting plate is further rotatingly connected with a threaded rod through a bearing with a seat, the threaded rod passes through the lifting plate and is in threaded connection with the lifting plate, a gear motor is fixedly arranged at the lower left corner of the supporting plate, and the top end motor shaftof the gear motor is fixedly connected with the bottom end of the threaded rod. The device disclosed by the invention can irrigate the greening belts with different heights and has a wider application range, irrigation positions are close to root parts of plants, a water utilization rate is higher, and water resources are saved.

The invention provides a seawater desalination method for an integrated membrane process and belongs to a water desalination technology. Aiming at the defects of high investment, high pressure, high energy consumption and the like in an existing membrane-method seawater desalination process, 'nanofiltration/electrodialysis reversal' is taken as a core desalination process, wherein during nanofiltration, a high-desalination nanofiltration membrane with desalination ratio of 90% is adopted; during electrodialysis reversal, a thin-type electrode chamber is filled with a multistage multi-section energy-saving electroosmosis device provided with mixed-bed ion exchange resin. Seawater raw water is sequentially pretreated by virtue of a coagulative precipitation tank, a settling tank, a sand filter and an ultrafiltration membrane, and then is subjected to graded desaltination sequentially by virtue of a nanofiltration desalination device with an energy recovery device, and an energy-saving frequent electrodialysis reversal device; nanofiltration and energy-saving electrodialysis are respectively performed at low operation pressures which do not exceed 3.8MPa and 0.4MPa; the salt content of water produced by the system is 80-250mg/L, the total desalinization ratio can be mechanically regulated within a range of 99-99.75%, the body power consumption of per ton of water does not exceed 2.15KWh/m<3>, the investment and energy consumption of the whole seawater desalination process are obviously reduced, and the process operation is relatively safe and stable.

The invention belongs to the field of reservoir optimization dispatching, and discloses an electricity generation dispatching method of hierarchical control of reservoir water-storage-period runoff in a case of random water incoming. Firstly, the water-storage-period reservoir-inflow runoff is divided into two stages of a facing time period and the long remaining-period time period, historical reservoir-inflow runoff data of a reservoir for many years is analyzed, and a transition probability matrix between the current runoff of each time period of a water storage period and the average runoff of the long remaining-period time period is obtained by statistics; then a reservoir operation water level and reservoir-inflow flow of each time period of the water storage period are dispersed to obtain combinations of the water level and the reservoir-inflow flow of each time period of the reservoir; and for each combination, various random average inflow value probabilities of the long remaining-period time period are obtained according to the transition probability matrix, a decision flow value enabling an expected electricity generation capacity value of the current time period and the long remaining-period time period to be greatest is calculated and obtained, and a hierarchical control table of the runoff is compiled and obtained by combining after calculation for all the time periods of the water storage period is completed. The method of the invention can improve the water amount utilization rate and the electricity generation capacity of the water storage period of the reservoir in a case of considering the randomness of water incoming of the future time period.

The invention provides an RO membrane central tube. The RO membrane central tube comprises a central tube, the central tube is sleeved by a separation layer, the separation layer cooperates with the outer wall of the central tube so that a sealedly separated pure water through hole and concentrated water through hole are formed, the pure water through hole is used for communication with a pure water passage of a RO membrane, the concentrated water through hole is used for communication with a concentrated water passage of the RO membrane, the central tube is provided with sealedly separated first and second water communication cavities, the first water communication cavity has a first water outlet, the second water communication cavity has a second water outlet, the side wall of the central tube is provided with a first water communication hole communicated with the first water communication cavity and a second water communication hole communicated with the second water communication cavity, one of the first and second water communication holes is communicated with the pure water through hole and the other one of the first and second water communication holes is communicated with the concentrated water through hole. The RO membrane central tube increases the length of a water flow path of the reverse osmosis membrane and improves the water use efficiency. The invention also provides an RO membrane filter core with the RO membrane central tube, and a water purification machine with the RO membrane filter core.

The invention discloses a drain-separation method of dry process red mud yard and a drain-separation structure thereof; wherein, the structure comprises a red mud yard, a filter pipe, a yard water recycling tank and a returning pipe. In the method, the yard water recycling tank is arranged as the two of an independent red mud adhesive liquid water recycling tank and a rain water recycling tank, a drain corridor for draining rain water and examining and repairing the returning pipe is arranged at the bottom of the red mud yard, the drain corridor is communicated with the rain water recycling tank, the returning pipe is formed by collocating and connecting steel pipes and metal soft pipes, and a ring-shaped groove which is used for diffluentence is arranged at the bottom end in the filter pipe, and the returning pipe is connected with the ring-shaped groove part of the filter pipe. In this way, not only the reliability of water returning system is ensured, but also pollution to environment aroused by leakage of adhesive liquid is prevented, meanwhile, the arrangement to the drain corridor can also bring convenience for examining and repairing the water returning system, stability of production system is improved, and the hidden trouble of water leakage is eliminated.

The invention relates to a dual-cycle reverse osmosis device and a reverse osmosis treatment method. The dual-cycle reverse osmosis device comprises a single-cycle water saving loop communicated with pipelines of an aftertreatment device and a supercharging device by a water inlet electromagnetic valve between a water inlet pipe and a thick water discharge outlet, wherein a loop is additionally arranged on the single-cycle water saving loop to form a dual-cycle water saving loop. The dual-cycle water saving loop consists of a first tee pipe, a second tee pipe, a third tee pipe, a fourth tee pipe, one-way valves, a one-way throttle valve and a pulse electromagnetic valve, wherein the first tee pipe and the second tee pipe are arranged between the water inlet electromagnetic valve and the supercharging device; the third tee pipe and the fourth tee pipe are arranged between a thick water opening of the aftertreatment device and the thick water discharge outlet and communicated with each other through a pipeline; the one-way valves limit water to only flow to a water inlet opening of the supercharging device and are respectively arranged between the first tee pipe and the fourth tee pipe as well as between the second tee pipe and the third tee pipe; the pulse electromagnetic valve is arranged between the third tee pipe and the fourth tee pipe; a throttling device is arranged between a water outlet of the pulse electromagnetic valve and the thick water discharge outlet.

This invention discloses a method and equipment for producing pure water used in pharmaceutical plant, by using membrane separation and electro-deionization, by using urban running water as raw water. The procedures are: low pressure membrane filtration, absorption by activated-carbon, precision filtration, nanometer filtration and softening and desalination, electro-deionization and deep softening, electro-deionization and deep desalination, functional charged membrane filtration. This invention method can remove, from water, inorganic ions, organic pollutants, bacteria, virus and other microorganisms. Compared with prior art process, this inventive process has advantages of: low cost, high utilization rate of raw water, no need of regeneration process, no consumption of alkali and acid, no environmental pollution, wide available of raw water, high reliability and continuous production of high pureness water.

The invention provides a novel device and a novel method for cultivating benthic diatoms. Under the condition that the cultivating environment is controllable, the benthic diatom cultivating device makes full use of a water space for achieving stereo high-density cultivation of the benthic diatoms. The benthic diatom cultivating device is high in water utilization rate, and can make full use of photosynthetic CO2; cultivated microalgae are large in biomass.