59results about How to "No sewage" patented technology

The invention provides a method for deacidifying biodiesel, comprising the following steps of: mixing the biodiesel to be deacidified with a deacidification agent containing water-soluble alcohol, water-soluble amine and water, separating out an oil phase and an aqueous phase after layering, and refining the oil phase to obtain the biodiesel with a qualified acid value. The biodiesel to be deacidified can be a biodiesel intermediate with unseparated glycerol after the ester exchange between oil and alcohol, and can also be crude biodiesel which is removed with the glycerol or/and has a product acid value still out of limits after distillation for colloid removal. The method in the invention not only can be used for conveniently removing organic acid in the biodiesel and obviously reducing the acid value of the biodiesel, but also can be used for effectively reusing or recovering the organic acid and glycerol.

The invention relates to a self-supporting construction method for a multilayer underground structure next to an existing building. When the distance between a proposed underground building and the existing building is within 15 meters, the construction method is adopted, and the method specifically comprises the following operation steps: 1, supporting pile construction; 2, developing and controlling an earthwork of a negative first layer; 3, controlling holes at a frame column position and setting a retaining wall; 4, carrying out the construction of frame columns of a negative second layer; 5, carrying out the construction of top beams and plates of the negative second layer and columns, beams and plates of the negative first layer; 6, mounting horizontal steel supports; 7, developing and digging the earthwork of the negative second layer; and 8, carrying out the construction of other structures of bottom plates, walls and the like of the negative second layer according to a conventional method. The method skillfully uses the rigidity of an underground engineering structure self to provide a supporting point for the supporting pile so that the supporting pile is changed into a three-span indeterminate member from a cantilever member, so the bending moment load effect of the supporting pile is greatly reduced, then the designed pile length and section area of the supporting pile can be greatly reduced, the construction cost is saved by about over 35 percent, and the integral construction progress of the underground structural engineering is accelerated.

The invention discloses a method for preparing sodium percarbonate, which mainly comprises the following steps: preparing a hydrogen peroxide solution; adding fine sodium percarbonate particles into a mixer with cooling equipment to serve as crystal nucleus; spraying the hydrogen peroxide solution into the mixer, and starting the cooling equipment to keep the system reaction temperature at 20 DEG C to 60 DEG C; adding anhydrous light sodium carbonate and a solid stabilizer into the mixer via transportation equipment; when the particle size of sodium percarbonate products reaches 0.5 mm to 1.2 mm, discharging the products; meanwhile, adjusting the feeding speed and the discharging speed to maintain the constant material in the mixer; screening the discharged sodium carbonate products by virtue of screening equipment, wherein the fine sodium percarbonate products with particle size less than 0.5 mm are returned to the mixer as crystal nucleus in a quantitative manner and the middle target materials with particle size within 0.5 mm and 1.2 mm are dried to be finished products. The method for preparing sodium percarbonate is environmentally friendly, small in equipment investment and simple in technology, produces no sewage, and can prepare the high-quality products with high active oxygen, excellent heat stability and excellent humidity stability.

The invention discloses a calcium peroxide preparation method. The method is characterized in that the method mainly comprises the following steps: 1, adding a certain amount of water into a heat insulation reactor, and starting stirring; 2, preparing a hydrogen peroxide mixed solution with a stabilizer triethanolamine; 3, adding a stabilizer sodium tripolyphosphate into calcium hydroxide powder until the sodium tripolyphosphate content accounts for 0.05-10% of the mass of calcium peroxide; 4, simultaneously adding the prepared hydrogen peroxide mixed solution and the calcium hydroxide powder into the heat insulation reactor according to a molar ratio of hydrogen peroxide to calcium hydroxide of 1.18-1.29:1, maintaining the reaction temperature in a range of 20-30DEG C, and reacting for 10-30min; 5, carrying out pumping filtration of reaction materials, and drying to obtain finished calcium peroxide powder; and 6, carrying out processes of step 1 to step 4 on a mother liquor obtained after the pumping filtration to prepare calcium peroxide. The method has the advantages of environmental protection, no sewage, small equipment investment, simple technology, and realization of the preparation of high-content calcium peroxide products at normal temperature.

A process for industrially preparing superfine powder or powder slurry includes such steps as breaking raw material to become particles equal to or less than 3 mm, multi-stage pulverizing to become superfine powder, and directly mixing it with water to become powder slurry. Its multifunctional superfine pulverizing system is also disclosed.

An oil unloading and emptying system for the hydraulic dumping oil tank is composed of pitching tube module, submerged oil pump module, hydraulic station and tank-emptying system. Said hydraulic station has a hydraulic power output unit consisting of antiexplosion motor and duplex pump in oil tank. Said submerged oil pump module consists of submerged oil pump, fork pipe, plunger motor, said hydraulic station and pressure delivering pipeline. Sadi tank-emptying system comprises said duplex pump, emptying pump, fork pipe, three-way and valves.

The invention belongs to the field of man-made boards, and relates to preparation methods and application of low mole ratio UF resin adhesive and high mole ratio MUF resin adhesive. The preparation method of the low mole ratio UF resin adhesive comprises the steps that urea is added for three times, and the mole ratio of formaldehyde to the sum of the urea participating reaction is 0.92-0.95; the mole ratio of the formaldehyde to the urea added in the first time is 2.0-2.2; the mole ratio of the formaldehyde to the sum of the urea added in the first time and the urea added in the second time is 1.35-1.5. The preparation method of the high mole ratio MUF resin adhesive comprises the steps that melamine is added, the urea is added for three times, and the mole ratio of the formaldehyde to the sum of all the urea and the melamine is 1.00-1.03; the mole ratio of the formaldehyde to the sum of the urea added in the first time and the melamine is 2.0-2.2, and the mole ratio of the formaldehyde to the sum of the urea added in the first time and the second time and the melamine is 1.35-1.50. The invention further discloses application of the prepared adhesive in shaving boards with the ultralow formaldehyde emission. According to the preparation methods and the application of the low mole ratio UF resin adhesive and the high mole ratio MUF resin adhesive, the binding force of wood shavings in the core layers of the shaving boards is improved, the press speed is improved, and the production efficiency of the boards is improved.

The invention relates to a preparation device and preparation method for an asphalt mixture trapezoidal beam test specimen; the device comprises a hydraulic system, a pressure control system, a counter force frame, and a test mold assembly; the counter force frame is erected at the upper part of a hydraulic jacking rod; the test mold assembly is arranged at the top of the hydraulic jacking rod and includes an upper press head, a lower press head and a test mold; the test mold has an inner cavity; the lower press head is located at the bottom of the inner cavity of the test mold; the upper press head presses the test mold from the upper part. The test mold assembly presses against the counter force frame in virtue of the jacking force of the hydraulic system so as to extrude and mold the test specimen. Rolling forming of the prior art is changed, only simply mixing static-pressure molding of trapezoidal beam test specimen-demolding cooling maintenance are required, the production cycle is short, and the molded test specimen has small error; and static pressure molding has no damage of high-frequency vibration during cutting of a specimen in the prior art on the test specimen.

The invention aims at disclosing a compressing double deoxidizer for steelmaking, which, by weight percentage, comprises 5-20% of Ca, 0-8% of Mg, 0-20% of Al, less than 0.03% of S, less than 0.02% of P, 2-10% of binder and balanced Mn. The invention further aims at disclosing a preparation method of the compressing double deoxidizer for the steelmaking, raw materials are added in the binder after mixed according to the proportion and evenly mixed, the mixed raw materials are put in a compression molding press with the pressure less than 20T for pressing, the stoving temperature is set to be 60-120 DEG C to dry a compressed double deoxidizer block for 15-60min, and a dried compressed double deoxidizer block is cooled and packaged to obtain the needed compressing double deoxidizer for the steelmaking.

The invention discloses a perishable garbage biological disposal system. The system comprises a garbage pretreatment device, a garbage digestion device and an intelligent environment control device, wherein the garbage digestion device comprises an automatic feeding machine, an insect feeding machine, automatic deodorization equipment, a digestion bed surface, cleaning equipment, disinfecting equipment and automatic discharging equipment; the garbage pretreatment device comprises a barrel turning machine, a grinding machine, a material storage tank and deodorization spraying equipment; and theintelligent environment control device comprises a temperature sensor, a humidity sensor, an illumination sensor and a microcomputer control device. The invention further discloses a method for disposing the perishable garbage based on the perishable garbage biological disposal system. According to the perishable garbage biological disposal system and a method for disposing the perishable garbageby applying the system, a method for disposing the perishable garbage by using hermetia illucens is large in disposal capacity, short in disposal time and low in cost, so that the perishable garbageis digested, the objective of making perishable garbage be transformed into feed is achieved, economic benefits are increased, and sustainable development is facilitated.

A marked line removing vehicle for highway construction comprises a flat panel transporting truck, a double-disc type high pressure water removing trolley is arranged on the lower portion of the frontend of the flat panel transporting truck through a front swing lifting mechanism, a supporting frame and a pulpwater collecting and draining device located on the rear side of the supporting frame are arranged on a chassis of the flat panel transporting truck, a clean water tank is arranged in the supporting frame, a hydraulic system is arranged on the lower portion of the chassis of the flat panel transporting truck, an engine, a diesel tank, a power generator, a storage battery, an upper water pump, a high pressure water pump, a vacuum pump, a first-level filter system and a second-level filter system are arranged on the supporting frame, and a pulpwater inlet of the pulpwater collecting and draining device is connected with a pulpwater suction port of the double-disc type high pressurewater removing trolley through a flexible connection type slag suction pipe assembly. The marked line removing vehicle is convenient to operate, convenient to use and very good in removing effect, and can effectively improve the construction efficiency and the construction effect. Meanwhile, the marked line removing vehicle improves the automation degree of high pressure water removing, relievesthe labor intensity of workers, and accordingly promotes the popularization and application of high pressure water at the aspects of automation and industrialization.

A combined type marking removal engineering vehicle for road construction comprises a flatbed transporter and a hand-push high-pressure water removal vehicle located on the front side of the flatbed transporter. The flatbed transporter is provided with a slag and water collection and drainage device, a clean water tank, a hydraulic system, an engine, a diesel tank, a generator, a storage battery,a charging pump, a high-pressure water pump, a vacuum pump, a primary filtration system and a secondary filtration system. The water outlet of the high-pressure water pump is connected to the water inlet of the hand-push high-pressure water removal vehicle through a high-pressure water outlet pipe. The suction port of the vacuum pump is connected to the upper portion of the front side of the slagand water collection and drainage device through a vacuumization pipe. The slag and water inlet of the slag and water collection and drainage device is connected to the slag and water suction port ofthe hand-push high-pressure water removal vehicle through a fixable connection type slag suction pipe assembly. The combined type marking removal engineering vehicle for road construction has a good removal effect, the waste water and the slag can be recovered, the construction efficiency and the construction effect are effectively improved, the degree of automation of high-pressure water removalis also improved, the labor intensity of the workers is reduced, and the popularization and application of high-pressure water to the fields of automation and industrialization are promoted.

The invention discloses an ice-similar training site comprising a safety protection device. The ice-similar training site comprises a ground, a fence, an awning, the safety protection device, a miniature photovoltaic wind power generation station and multifunctional site maintenance equipment; the ground comprises a mortar concrete layer, a stone layer, a special interface agent layer and a true ice layer; the fence comprises a skeleton, oblique supports, a PE plate and a safety net; the awning comprises an aluminum square-tube combination skeleton, a sleeve, a lighting window, a lighting strip-shaped roof, an inlet flexible door, an outlet flexible door and an LED explosion-proof panel lighting lamp; the safety protection device comprises fixing blocks, combined fixed pulleys, ratchet wheels, steel wire oil ropes, movable pulleys, safety ropes and safety belts; and the miniature photovoltaic wind power generation station comprises a solar photovoltaic panel, a solar water heater, a wind power generator, a supporting skeleton, a power generation unit and a wind energy unit. The ice-similar training site is convenient to dismount and mount, is not affected by the weather environment, and is high in safety factor, capable of moving and high in universality.

The invention discloses a method for extracting tryptophan from fermentation broth. The method comprises the following steps: (1) primary crystallization of fermentation broth; (2) separation to obtain primary crystals; (3) secondary crystallization of fermentation broth; and (4) obtaining a tryptophan finished product. According to the method, primary crystals are separated from tryptophan fermentation broth, then thalli and proteins in the fermentation broth are removed, the obtained clear liquid is subjected to evaporation and concentration after being discolored, then crystallization and separation are performed to obtain secondary crystals; an ion exchange procedure is completely omitted, pollutant emission is little, and the method is environmentally friendly. No organic membrane process is adopted, equipment investment is low, and the cost is low. Under the condition that the cost is reduced and the consumption of water resources and heat energy is reduced, the purity and yieldof the product are greatly improved compared with those of an existing process; and the process is suitable for large-scale industrial production.

The invention discloses an efficient and energy-saving heat supply system adopting heat-conducting oil conduction, and relates to a heat supply system. The heat supply system comprises a magnetic flap level gauge (1), an outer tank (2) of an oil tank, an inner tank (3) of the oil tank, a heat-conducting oil heating pipe (4), an oil outlet port (5) of the oil tank, an oil outlet pipe (6), a pressure gauge (7), an oil suction pump (8), an anti-explosive oil outlet temperature gauge (9), a Y-type filter (10), a ball valve (11), a pipeline (12) for entering heat utilization equipment, the heat utilization equipment (13), an anti-explosive oil return temperature gauge (14), another ball valve (15), an oil inlet port (16), a partition (17) of the oil tank, a vacuum safety cap (18), an oil drainage positive thread end (19) and an oil injection positive thread end (20), wherein the interior of the oil cavity of the oil tank and the oil suction pump (8) are communicated to the heat utilization equipment (13), and the partition (17) of the oil tank is arranged in the oil tank. According to the heat supply system disclosed by the invention, an oil circulation pump is used for carrying out forced liquid phase circulation, heat energy is conveyed to the heat utilization equipment and then returned for re-heating, and the heat supply system is less in pollution, high in heat utilization rate, safe, and free from pollution discharge, pollution and heat pollution.

The invention relates to a preparation method of bisphenol A bis(diphenyl phosphate). The preparation method comprises the following steps of: (1) mixing phosphorus oxychloride and a catalyst, heating to 80 DEG C, and mixing bisphenol A; (2) heating to 105 DEG C at the speed of 4 DEG C/h, and balancing the temperature for 2h, then evaporating excessive phosphorus oxychloride, controlling the temperature not to be higher than 120 DEG C, and cooling to 73-78 DEG C after evaporation; (3) adding molten phenol, heating to react, balancing the temperature of 95 DEG C for 1.5h, the temperature of 115 DEG C for 1h and the temperature of 135 DEG C for 1, finally uniformly and stably heating to 155 DEG C until no acidic gas appears, and ending the reaction to obtain raw ester; (4) subjecting the raw ester to purification, polarization, alkali neutralization, washing and impurity removal to obtain wet raw ester; and (5) carrying out reduced pressure distillation on the wet raw ester, sampling and analyzing an acid value to be smaller than or equal to 0.15mgKOH/g, and filtering the wet raw ester to obtain the bisphenol A bis(diphenyl phosphate). The preparation method provided by the invention is simple in operation, simple and convenient in condition, short in reaction time, low in energy consumption, little in corrosion and pollution, high in purity of products and high in yield higher than 88%.

The invention discloses a pig raising method capable of providing a good growth environment for pigs, which includes: firstly, setting a padding layer 10-15cm in thickness on the concrete floor in a living area of a pigsty; secondly, wetting the padding by spraying in case of high temperature for cooling, and setting dry padding in winter for heat preservation; thirdly, a fermentation trench as long as the outer side of the living area, 90-110cm in width and 60-70cm in depth is disposed on one side of the outside of the living area; fourthly, manually moving dirty padding into the fermentation trench when a great deal of urine is adsorbed into the padding in the living area; and fifthly, adding EM (effective microorganisms) and little local surface soil into the fermentation trench for natural fermentation. The pig raising method has the advantages of environment friendliness, economy, practicality and simplicity in operation.

The invention relates to a novel full-static airflow emulsification process which comprises the following steps: firstly, introducing hot water into a heating coil to preheat and preheat a pneumatic pre-emulsion tank, and then pumping an oil phase solution into the pneumatic pre-emulsion tank from an oil phase feeding pipe; then feeding compressed air into the pneumatic pre-emulsion tank, and pumping the water-phase solution into the pneumatic pre-emulsion tank from the water-phase feeding pipe; when the water-phase solution is added, adjusting the opening degree of an electric adjusting valve of compressed air, increasing the air flow for emulsification, continuously dispersing bubbles sprayed out of small holes of the air flow pipe through the four layers of screens and fully distributing in the whole tank body, wherein under the action of the dispersed small bubbles, water-phase tiny liquid drops continuously enter the oil-phase solution to form a water-in-oil coarse emulsion matrix. According to the invention, potential safety hazards caused by a mechanical rotating part are thoroughly eliminated from the source, and the safety of the production process is greatly improved.

The invention discloses a large-scale engineering vehicle and manual-push combined type road marking removal device. The road marking removal device includes a powered platform vehicle for transportation and a manual-push high-pressure water removal vehicle located on the front side of the powered platform vehicle for the transportation, a special-shaped water tank device and a slag water collecting and discharging device are arranged on a underpan of the powered platform vehicle for the transportation, and the special-shaped water tank device is provided with an engine, a fuel tank, an electric generator, an accumulator, an upper water pump, a high-pressure water pump, a vacuum pump, a first-stage filter system, and a second-stage filter system; and a water outlet of the high-pressure water pump is connected with a water inlet of the manual-push high-pressure water removal vehicle through a high-pressure water outlet pipe, and a slag water inlet of the slag water collecting and discharging device is connected with a slag water suction inlet of the manual-push high-pressure water removal vehicle. The road marking removal device is easy to operate, easy to use, and good in removal effect, and can recycle waste water and residues, and the construction efficiency and construction effect are effectively improved; and at the same time, the automatic degree of high-pressure water removal is improved and the labor intensity of workers is reduced, thereby promoting the promotion and application of high-pressure water in automation and industrialization.

The invention discloses a circulating biological selection reactor for livestock and poultry culture sewage treatment. The reactor is mainly composed of a gas outlet, a reactor body, a water inlet, a sewage collecting pool and a water outlet, livestock and poultry culture sewage enters an anaerobic zone 1 through the water inlet and undergoes anaerobic denitrification, sludge in an incremental portion directly falls into the sewage collecting pool, anaerobic sewage overflows an overflow external plate, overflowed sewage is directly introduced to a biological selection zone 1 through a pipeline and undergoes biological adaptation, obtained sewage enters a biological aerobic zone 1 and undergoes selective biological aeration treatment, a nitration solution directly enters an anaerobic zone 2 and undergoes denitrification, cycle treatment is carried out, a gas is discharged from the gas outlet, sewage obtained after biological aerobic zone 3 treatment goes through a water fender, obtained water is drained from the water outlet, and sludge in the sludge collecting pool is discharged through a sludge pump. The reactor has the advantages of no refluxing of sludge or the nitration solution, realization of phosphorus removal through repeated anaerobic and aerobic treatment of sludge, direct falling of incremental and residual sludge to bottom without sludge discharge, and realization of thorough separation of three phases positioned in different directions.