2672results about How to "Avoid secondary pollution" patented technology

The invention discloses a neutral inorganic composite material for dehydration, solidification and modification of high water content sludge. The composite material comprises a powdery mixture consisting of the following components in part by weight: 100 parts of water hardened solidifying material consisting of hydrated gypsum and magnesium oxide, 80 to 120 parts of inorganic water absorption ash material, 20 to 40 parts of inorganic substance aid hardened material, 1 to 10 parts of high polymer coagulant and 1 to 5 parts of modifying functional agent. After being treated by the neutral inorganic composite material, the solidified sludge has high compressive strength; the pH of the lixivium is neutral, and meanwhile, harmful substances such as heavy metal and the like in the sludge can be effectively solidified; the treated sludge meets the requirement of landfill soil, soil for earthwork or soil for greening and farmlands; and the neutral inorganic composite material can be widely applied to the dehydration, solidification and modification of the high water content sludge such as sludge from waterworks, dredged bottom mud of rivers and lakes, residual building soil and the like.

The invention relates to a biomass magnetic carbon material for degrading organic dye. The material is prepared by mixing a biological raw material and an iron precursor at a ratio of (2-20kg):1kg. Meanwhile, the invention also discloses a preparation method of the biomass magnetic carbon material. The biomass magnetic carbon material provided by the invention is cheap and efficient and has double effects of adsorption catalysis and degradation; serving as an efficient catalyst in a process of constructing a Fenton-like system for treating high-concentration wastewater, the biomass magnetic carbon material has high catalytic activity in thoroughly oxidizing and degrading organic dye; the degradation effect is better than that of a ferrous ion homogeneous catalysis reaction and a Fenton-like reaction taking ferroferric oxide as a catalyst.

A haydite is prepared from the fly ash (20-80 Wt%) generated by burning garbage and clay (rest) through mixing, granulating, and high-temp calcining at 1000-1400 deg.C.

A process for preparing sulfuric acid from used alkylating sulfuric acid by high-temp cracking includes such steps as heating to 1000-1100 deg.C, cracking, acid washing for cleaning, converting twice by contact method, and absorbing twice to obtain qualified sulfuric acid for reuse. It has high recovering rate.

A method for recovering MnO2 from the anode material of a wasted lithium manganate oxide battery comprises the following steps of firstly obtaining an anode active material by pre-disposing assembled anode sheets with alkaline solution, etc., subsequently taking the anode active material as a raw material and obtaining a Lambda-MnO2 by soaking the raw material in an inorganic acid or a normal-pressure acid, or obtaining an Alpha-/Beta-/Gama-MnO2 by soaking the raw material in a hydrothermal acid. The method has simple process, little used acid and convenient separation and purification; the obtained various crystal-type MnO2 with large specific surface area and porous structure can be applied directly to be as a catalyst for synthesizing ester compound or disposable battery anode material of Li/MnO2 or electrode material of a super-capacitor.

The invention provides a method for producing baking-free bricks by using phosphorous gypsum based cementitious material to solidify yellow phosphorous slags. 1) The raw materials and formula of the invention are as follows: (1) the phosphorous gypsum cementitious material: 40-60 parts of phosphorous gypsum, 0-30 parts of yellow phosphorous slags, 0-30 parts of pulverized fuel ash, 0-5 parts of blast furnace slag, 10-15 parts of calcined lime, and 0-10 parts of carbide slag; (2) the mateirals of the baking-free brick green bodies: 100 parts of phosphorous gypsum cementitious material, 150-300parts of yellow phosphorous slags raw materials, 2-4 parts of activator, 0.2-1 part of auxiliary agent, and 10-40 parts of water. 2) The preparation method: the baking-free bricks are produced throughthe steps of treating raw materials, mixing the solution with additive, preparing brick blanks and moulding and conserving. In the production process of the invention, no organic matter is added, thus completely avoiding the pollution problems of toxic substance caused by degradation of organic materials, and the release of additive and volatilization of residues, and having the advantages of lowcost, good physical property, high production efficiency, saving of energy consumption and non environmental pollution.

The invention relates to a chemical oxidation remediation method for organism-contaminated soil and a remediation device. The device comprises an oxidant pot, a catalyst pot, a chelating agent pot, aflexible pipe, an electric valve, a control apparatus, a valve switch, a pump, a flow valve, a reactor, a stirrer, a stirrer switch, a sealing cover, a liquid inlet pipe, an exhaust pipe, a gas-liquidseparating apparatus and a tail gas treating apparatus. The method comprises the following steps: placing contaminated soil into the reactor; firstly injecting 0.03-0.4mol/ (kg soil) of citric acid into the reactor through the chelating agent pot; then adding 0-0.4mol/ (kg soil) of catalyst ferrous sulfate in the catalyst pot, and adding water to be dissolved to prepare 0.5mol/l of catalyst; injecting the catalyst into the reactor by the pump; pumping 1-2mol/(kg soil) of oxidant hydrogen peroxide into the reactor; and fully stirring the three preparations and the contaminated soil by the stirrer in the reactor to oxidize and degrade polycyclic aromatic hydrocarbon in the soil, and the removal rate of pollutants in the soil exceeds 80 percent. The invention has high efficiency on organics-contaminated soil remediation and can not cause secondary pollution to the soil.

The invention discloses composite technology combining an electrodynamic method and a chemical leaching method, namely a process for performing high speed in situ restoration on heavy metal pollution soil without secondary pollution, wherein a natural organic complexing agent and an acidic anode working solution are used as a leaching agent; a leaching liquid containing heavy metals is migrated to a cathode processing area through electroosmotic flow; and combining the advantages that the electromigration can pass through low-permeability soil and a low pH anode working solution and can strengthen the desorption of solid heavy metals, the leaching agent can be selected as comparably mild natural organic acid so as to avoid the secondary pollution at source; simultaneously, with the repair process, pH jump points formed near a cathode are leached intermittently, an acid migration belt is controlled to advance continuously so that the pH jump points appear in the cathode processing area, and the problem of the reduction of the current efficiency with the time because of the decline of the local conductivity caused by the neutralization reaction between an acid surface and an alkali surface at a restoring part is avoided.

The invention discloses a method for preparing flocculant liquid polyaluminum chloride from aluminum ash, belonging to the technical field of solid waste treatment environment protection. The method comprises the following steps: uniformly mixing and stirring aluminum ash and water in a volume ratio of 1:(3-5), and soaking for 5-8 hours; pumping the solution into a reaction kettle, adding hydrochloric acid and water in an aluminum ash/hydrochloric acid/water volume ratio of 1:(2.5-3.0):(3.0-4.0), and reacting at 85-100 DEG C for 2-3 hours; carrying out solid-liquid separation with a plate and frame type filter-press, and adding a regulator to regulate the aluminum oxide content and basicity of the liquid, wherein if quicklime is used as the regulator, the volume ratio of the liquid to the quicklime is 1:(0.054-0.086), if aluminum dust is used as the regulator, the volume ratio of the liquid to the aluminum dust is 1:(0.023-0.04), and if solid calcium aluminate is used as the regulator, the volume ratio of the liquid to the solid calcium aluminate is 1:(0.042-0.063); and standing and aging for 48-72 while controlling the temperature at 50-60 DEG C, thereby obtaining the liquid polyaluminum chloride finished product. The invention has the advantages of simple technique, low cost and no secondary pollution, and is a good method for recycling aluminum ash.

The invention relates to a regenerating and recycling method of Fenton and Fenton like reaction catalyst. The method comprises the following steps of: (1) taking hydrogen peroxide as oxidant and ferrous ion or iron ion as catalyst to treat organic waste water which is difficult to degrade and carrying out neutralization precipitation to obtain ferriferous sludge; (2) dehydrating the ferriferous sludge, drying the ferriferous sludge at a temperature between 100 and 150 DEG C and then burning the ferriferous sludge at a temperature between 350 and 550 DEG C to obtain iron residues; (3) adding dilute sulphuric acid in the iron residues to obtain a ferric sulfate solution; and (4) taking the ferric sulfate solution as Fenton like reaction catalyst used in the oxidative treatment of the organic waste water which is difficult to degrade. The regenerating and recycling method has the advantages that the method can remove more than 95 percent of organic substances in ferriferous sludge, thereby avoiding secondary pollution; the obtained ferric sulfate solution can be used as Fenton like reaction catalyst to reduce the consumption of fresh catalyst; moreover, the method has ideal treatment effect, low cost, convenient operation and enormous application prospect.

The invention discloses a washing machine for a post insulator. The washing machine for the post insulator comprises a moving platform, a lifting rotary device and a washing head used for sweeping the post insulator, wherein the lifting rotary device is arranged on the moving platform, the lifting rotary device comprises a telescopic component used for controlling the washing head to rise and descend, and a rotary component used for controlling the washing head to swing in a left-and-right mode, a front-and-back adjusting device which is used for controlling the washing head to move forwards and backwards is arranged on the top of the telescopic component, an inclined lifting device which is used for controlling the inclination angle of the washing head, and controlling upward-and-downward lifting operation of the washing head is arranged at the front end of the front-and-back adjusting device, and the washing head is arranged on the inclined lifting device. The washing machine for the post insulator can be popularized and be used in a power grid system, can be serve as a dedicated anti-pollution flashover overhauling device, improves the level of standardized operation, improves overhauling quality, creates economic value for safe operation of a power grid, reduces safe production risks, and reduces safe production cost.

The invention relates to a modified glutamic acid fertilizer synergist and a production method and an application thereof. The fertilizer synergist is a modified glutamic acid fertilizer synergist obtained by extracting glutamic acid with small molecular amount from weathered coal and humate serving as raw materials with diluted alkali or diluted acid and hydrogen peroxide and adding chelated state trace elements. Due to the adoption of the modified glutamic acid fertilizer synergist, the soil urease activity can be suppressed remarkably, the ammonia volatilization loss is reduced, and slow release of a fertilizer is enhanced; root growth of crops can be facilitated, root activity is increased, and the capabilities of crops of absorbing phosphorus, potassium and medium and trace elements are increased; and nutrient loss can be reduced, secondary pollution is avoided, and the production cost of a synergic fertilizer is reduced.

The invention relates to a recovery and comprehensive utilization method of heavy metals in stainless steel pickling wastewater sludge and discloses a method for recovering and recycling nickel and chrome in sludge generated during the treatment process of stainless wastewater. The method comprises the following steps: leading waste liquid during the pickling process to be directly used for leaching metal ions in the sludge to save the consumption of reagents; adding a certain quantity of acid or alkali in each reaction tank through arranging a plurality of reaction tanks; controlling a pH value; effectively separating various matters according to different solubility of inorganic compounds; researching and developing a recycling technology of the heavy metals in the stainless steel industrial sludge, wherein the recovery efficiency of the heavy metals like the chrome and the nickel is high; leading the recovered heavy metals to be used for smelting stainless steel; leading recovered iron to be used for preparing an efficient flocculating agent; and leading the flocculating agent to be used for sewage treatment to realize sewage reuse and save the treatment cost. The invention has the advantages of simple process and easy operation, as well as popularization and application.

The invention discloses an in-situ remediation system and method for synergistically removing organic pollutants of soil and underground water. The method comprises the following steps: uniformly injecting chemical oxidants in chemical oxidant mixing storage tank into the soil and the underground water; generating high-temperature steam through a steam generator, and injecting the high-temperature steam into the soil and the underground water; starting a vacuum pump to extract gas from a vacuum extraction well, forming negative pressure in the well, and promoting desorption of volatile and semi-volatile organic compounds from the soil; and treating and discharging the volatile and semi-volatile organic compounds through a gas-liquid separation tank and an activated carbon adsorption tank. The high-temperature steam heat can activate the chemical oxidants so that degradation and removal of the organic pollutants in the underground water can be further accelerated, the underground water organic pollutants which are not completely degraded are further adsorbed, intercepted and degraded through an iron carbon adsorption permeation wall, so that the purpose of synergistically remediating the soil and the underground water is achieved, and secondary pollution of the soil and the underground water is avoided.

The invention relates to a biology-electrochemistry compound system for processing dye waste water and the operation system. The micro-electrolyzing filter connects to biological film oxygen aversion reactor through pipeline. The liquid outlet of reactor connects solid recycling integration oxidation channel through pipeline. The liquid outlet of oxidation channel connects to electrolyzing flocculating chamber. The gas outlet of oxidation channel and reactor connects to biology deodorization reactor through pipeline. The invention would improve the biochemistry feature of the waste water, and oxidation channel could remove the organic in water, the electrolyte tank could remove suspended particle, and the biology deodorization reactor would remove the odor from waste water. The invention could make the water quality after being processed reach the national standard of complex discharging.

The invention discloses a method for preparing biodegradable polyester from consumed polyester. The method comprises the following steps of: reacting the consumed polyester and divalent alcohol under the action of a catalyst at the temperature of between 190 and 250 DEG C to decompose the polyester to a corresponding oligomer by the alcohol; adding aliphatic dibasic acid or esterification derivative of the aliphatic dibasic acid and acid or alcohol of multifunctional groups into the oligomer, and performing esterification reaction at the temperature of between 180 and 240 DEG C to obtain corresponding esterification products; and performing condensation polymerization reaction on the esterification products to obtain biodegradable aliphatic-aromatic copolyester. By the method, the consumed and reclaimed polyester material can be directly converted into a biodegradable polyester material, and a virtuous circle channel is provided for reclamation and utilization of non-degradable polyester white pollutants; and the biodegradable polyester material has excellent mechanical and processing properties.

The invention provides a multiparameter water quality comprehensive analyzer, which is connected with an operation management center. The multiparameter water quality comprehensive analyzer comprises a power module connected with an external power supply, an energy storage module, of which the circuit is connected with the power module, a central control module connected with the power module, a sensor module connected with the central control module and a sensor cleaning module connected with the power module, the central control module and the sensor module. The multiparameter water qualitycomprehensive analyzer has the advantages that water quality parameters are measured by utilizing the measuring technology of a spectral analysis method, an ionic analysis method and the like withoutusing of chemical agents, so secondary pollution is prevented; in addition, the transmission mode and communication technology of a digitalized sensor fulfill the aims of multiparameter measurement, flexible configuration and intelligentized automatic management, and an energy storage device of the multiparameter water quality comprehensive analyzer can normally operate under the condition of no external power supply, so that the multiparameter water quality comprehensive analyzer is applied to the field monitoring environment conveniently.

The invention discloses a recycling and harmless treatment method for cyaniding tailing slurry. In the method, the cyaniding tailing slurry containing cyanogen, thiocyanate, heavy metal and arsenic and liquid containing hydrogen peroxide are subjected to direct mixing treatment; the method utilizes high specific surface area of micro-fine granular ore to add the contact opportunity between the thiocyanate and the hydrogen peroxide and the contact area between gas phase and liquid phase through surface adsorption to accelerate a speed of oxidation-reduction reaction and an acidifying and stripping speed, utilizes metallic substances contained in slag to accelerate the reaction rate of the oxidation-reduction reaction without the addition of catalyst, and can reduce cost; meanwhile, in neutralization, Fe3+ in the slag is utilized to meet the requirement of arsenic precipitation without the addition of an arsenic precipitation reagent; when residual cyanides is removed from the hydrogen peroxide liquid, the hydrogen peroxide liquid and cyano complexes which are difficult to remove through the oxidation-reduction reaction form sediment so that the residual thiocyanate is further removed; the method can make the conversion rate of the thiocyanate in the ore slurry more than or equal to 88 percent; and compared with the treatment of filter pressing clear liquid of homogeneous ore slurry, the total reclaiming rate can be increased by over 20 percent.

The invention discloses a preparation method of modified micron zero-valent iron and an application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil. The preparation method of the modified micron zero-valent iron comprises the steps of cleaning of iron raw materials, preparation of micro iron, ultrafine grinding and modifying treatment. A modifying agent composed of water, xanthan gum, sulfide, a stabilizing agent, zeolite and blast furnace slag is adopted in the step of modifying treatment. The preparation method of the modified micron zero-valent iron has the beneficial effects that the production process of the modified micron zero-valent iron is simple, and the effect similar or superior to micron zero-valent iron is achieved while the cost is reduced; and in addition, the reaction activity is controlled, the oxidation rate is decreased, excellent stability is obtained, and the acting time of the micron zero-valent iron is longer. By the adoption of the application method of the modified micron zero-valent iron, the remediation cost of heavy metal contaminated underground water is further reduced. According to the preparation method of the modified micron zero-valent iron and the application method of the modified micron zero-valent iron in remediation of heavy metal contaminated soil, organic fertilizer is added in the soil treatment process so that the fertility of soil can be improved, the structure of soil can be improved through humic acid produced by the organic fertilizer, heavy metal elements, such as lead, chromium and arsenic, in underground water can be removed, and the concentration of pollutants such as nitrate and perchlorate can be reduced.

The invention provides a disinfection and drying device for medical instruments used in medical care, which belongs to the field of medical care. It includes a spray device, a gas filter device, an electric heating rod, an ultraviolet lamp, a medical device carrying device, a partition and a motor; the spray device is fixed on the upper end of the disinfection drying box with bolts and nuts; the gas filter device is fixed On the upper right side of the disinfection drying box; the partition plate is welded on the inner wall of the disinfection drying box; the motor is fixedly arranged on the bottom end surface of the inner wall of the disinfection drying box and in the motor cover; the medical device carrying device is welded on the upper end of the rotating shaft; The electric heating rod is fixedly arranged on the right side wall inside the disinfection drying box, in the heating cover; there are several ultraviolet lamps, which are fixedly arranged on the left side inside the disinfection drying box, and are arranged in the glass cover. The device of the invention can realize the rotation, spray cleaning, disinfection and drying treatment of medical instruments, has high treatment efficiency, and simultaneously collects waste liquid and treats waste gas.

The invention extends the connotation range required to be protected on the basis of a previously issued patent ZL200710025045.4, i.e., a nanometer microcrystalline composite filter material and a preparation method thereof, belonging to the field of a water disposal technique material. According to weight percentage, the nanometer microcrystalline composite filter material comprises 3-95 percent of attapulgite clay, 5-80 percent of sepiolite clay, 2-25 percent of kaolinite clay, 2-97 percent of tubular halloysite, 5-75 percent of diatomite, 5-75 percent of natural zeolite (clinoptilolite, mordenite and the like), 0-25 percent of pillared montmorillonite, 0-50 percent of expanded vermiculite, 0-5 percent of expanded perlite and 0-50 percent of active carbon or bamboo carbon powders. All raw materials which are powder shapes are mixed according to proportion and stirred to granulate by adding an inorganic adhesive, then sintered and activated at the temperature of 900-500 DEG C (inert gas is required for sintering and activating the filter material added with active carbon). The nanometer microcrystalline composite filter material has smooth shape, rough surface and uniform particle size, with the diameter of 1-10mm, and is used for biological filter tanks and high-class adsorption filter materials in deep purification systems of drinking water and reclaimed water sewage disposal systems.

The invention provides a magnetic cleaning method for a washing machine. In the invention, cleaning particles are arranged between an inner barrel and an outer barrel of the washing machine, and consist of rubber or plastic and magnetic metal materials, an electromagnetic device is arranged on an outer wall of the outer barrel, and a forming step S1, a cleaning step S2 and a particle stack decomposing step S3 are set in a washing program or a poaching program, wherein particle stacks are formed between the inner barrel and the outer barrel in the forming step S1, and are washed between walls of the inner barrel and the outer barrel in the cleaning step S2. The invention also relates to the washing machine by adopting the magnetic cleaning method. When the magnetic cleaning method is adopted, the inner barrel and the outer barrel of the washing machine can be efficiently cleaned at the same time as clothes is washed and energy is saved, and the problem of the secondary pollution on the clothes due to dirt between the inner barrel and the outer barrel is solved.

The invention discloses a multifunctional environment-friendly digital terminal. The multifunctional environment-friendly digital terminal comprises a dustbin body, wherein the dustbin body comprises an environment-friendly solar power generating and supplying device, a self-sealing device, a garbage compressing device, an automatic sterilizing/smell-removal/disinfection device, an advertisement rolling device, a citizen assistance seeking and alarming device and a convenient taxi hailing device, wherein an optical energy and solar energy combined board is arranged at the upper part of the dustbin body; a garbage throwing opening is formed in one side surface of the dustbin body, and a dustbin door is arranged on the other side surface of the dustbin body; an assistance seeking button and a taxi hailing button are arranged at the upper part of the garbage throwing opening; a liquid leakage hole is formed in the lower surface of the dustbin body; a liquid collecting tank is arranged at the lower part of the liquid leakage hole; a liquid drainage pipe is arranged on one side of the liquid collecting tank; a base is arranged at the lower part of the dustbin body. The multifunctional environment-friendly digital terminal has the advantages of being simple in structure, convenient to use, and capable of avoiding secondary pollution, reducing odor diffusion, increasing the utilization rate of the dustbin, automatically and periodically spraying to sterilize, automatically carrying out early warning, having a dynamic advertising effect, providing assistance seeking, alarming and intelligent taxi hailing for the citizens.

The invention discloses a method for treating coal gasification wastewater. The method comprises steps of: (1) lime softening by first adding lime milk to the coal gasification wastewater to conduct chemical precipitation on calcium salt and magnesium salt with the lime milk, standing the precipitation and filtering an supernatant; (2) ozone oxidation by sending the wastewater filtered in the step (1) into an ozone oxidation device for treatment; (3) MBBR treatment by sending the wastewater subjected to ozone oxidation into an MBBR for treatment; (4) coarse filtration; (5) continuous membrane filtration or ultrafiltration; (6) reverse osmosis; and (7) multi-effect evaporation by conducting multi-effect evaporation on the concentrate obtained by reverse osmosis treatment, and further crystallizing the concentrate obtained by multi-effect evaporation. The method of the invention can effectively remove the main pollutants such as COD, ammonia nitrogen and chroma in coal gasification wastewater, can also greatly reduce the salt content of the wastewater, ensure the efficient and long-term running of the double membranes, and achieve zero discharge of coal gasification wastewater.

The invention discloses a method used membrane separating-electrolyzing integration to process heavy metal copper containing waste water. It includes the following step: gravity setting, micron filtering, and membrane separating. The concentrated solution is poured into the electrolytic reactor after pH value regulating to deposit heavy metal copper on its negative pole board by energizing to reduce. The residual liquid can be reused in the production technology. The invention can reclaim the metal copper from the heavy metal copper containing waste water, realize water resource reuse. In addition, it has simple device, convenient operation, high recovery ratio, comprehensive utilization ratio, good economic benefit.

The invention belongs to the field of sewage treatment, and relates to a tidal current wetland coupled electrochemical reinforced denitrification and dephosphorization method and system. The system comprises a tidal current artificial wetland aerobic bed (1), an anaerobic electrolysis bed (2) positioned on the lower part of the tidal current artificial wetland aerobic bed (1), and a system reflux pump (8) for connecting the tidal current artificial wetland aerobic bed (1) and the anaerobic electrolysis bed (2), wherein the tidal current artificial wetland aerobic bed (1) is communicated with a water inlet pipe (5) of an arranged pump, and planted with wetland plants (9); a first plate electrode (4) and a second plate electrode (11) are arranged inside the anaerobic electrolysis bed (2) and respectively connected with electrodes of a direct current power supply (3), and the bottom of the anaerobic electrolysis bed (2) is provided with a draining valve (6); and the positive and negative electrodes of the direct current power supply (3) can be exchanged regularly. The invention can reinforce the removal effect of nitrate and phosphate in the tidal current artificial wetland bed, and solve the problem that the operation of the wetland sewage treatment is greatly influenced by the seasonal changes, and the like.

The invention discloses a device and a method for treating organic waste gas by catalysis and ozonation. The method comprises the following steps: (1) the organic waste gas is collected and enters a pretreater, the waste gas is pretreated and oil drops, particulate matter, acid etchant gas and fog drops in the waste gas are intercepted; (2) after the pretreated organic waste gas is pressurized by an induced draft fan, the organic waste gas enters the cold end of a heat exchanger to be preheated; (3) the preheated organic waste gas enters a catalytic oxidation device, the organic waste gas entering the catalytic oxidation device is warmed up and then is mixed with ozone fed into the catalytic oxidation device, and the mixed gas enters a catalytic oxidation reaction region of the catalytic oxidation device to be subjected to the catalytic oxidation reaction so as to remove organic pollutants; (4) the purified gas serving as a heat source enters the hot end of the heat exchanger in the step (2) to be subjected to heat exchange and the gas subjected to heat exchange is discharged by an exhaust pipeline. When being combined with the treatment device disclosed by the invention, the treatment method disclosed by the invention has a better purifying effect on the waste gas and not only ensures purifying efficiency of the waste gas, but also is energy-saving and environment-friendly.

The invention discloses a rain and flood utilization system, which integrates project measures and ecological environment, is widely applied to the technical field of rain water utilization and particularly relates to the rain and flood utilization system in building zones. The whole process of the rain and flood utilization system is completed through rain water converging, safe diversion, abandoned flow control, filtration, storage, water quality keeping, purifying treatment and comprehensive utilization. The system has a security function of automatic alarm, avoids blockage and siltation, ensures smooth filtration, reduces potential safety hazard, realizes quaternity integrated recycle treatment, namely sterilization, activation, filtration and oxygenation, of stored water, further guarantees the water quality, prevents secondary pollution of an impounding reservoir, reduces load of water quality treatment and saves investment and operation cost.

The invention relates to a stainless heat-resistant alloy steel seamless steel tube and a preparation method thereof. The seamless steel tube comprises the following chemical compositions by weight percent: 0.04-0.10% of C, 0.75% or less of Si, 2.00% or less of Mn, 0.03% or less of P, 0.03% or less of S, 17.00-23.00% of Ni, 24.00-26.00% of Cr, 0.20-0.60% of Nb+Ta, 0.15-0.35% of N and the balance Fe and inevitable trace elements. The preparation method of the invention adopts hot extrusion and cold rolling, computer automatic control solution heat treatment and other advanced technologies. Theproduct of the invention has excellent mechanical performance, high temperature resistant and corrosion resistance and various technical indexes of the product all meet or exceed Chinese relevant technical standards, thus successfully providing a new kind of qualified tube for the ultra supercritical power station boiler.

The invention discloses a method for preparing edible safflower tea oil, comprising the following steps: taking safflower tea seeds as raw materials; conducting stackretting, removal of the oil tea fruit shells, and taking-off of the tea seeds for low-temperature drying below safe moisture content on the harvested mature safflower oil tea fruits, and then cleaning stone, removing shells, separating kernels and shells, and crushing till the particle size is 20 to 60 meshes and adding water for tempering; adopting a cold pressing method for extracting the tea oil; and finally conducting simple refining processes such as filtration, wintering and the like so that the quality index can achieve national first-class edible tea oil standards. The method for preparing edible safflower tea oil hassimple and feasible process, easily-controlled production conditions, less refining processes, low refining loss rate, can keep various nutritional components in the safflower tea seeds from being destroyed, leads the finished tea oil to have light, clear and transparent color, aromatic natural flavor of the tea seeds, and is a nutritional and healthy tea oil.