57results about How to "Guaranteed precipitation effect" patented technology

The invention discloses a composite vacuum pre-stressed soft foundation comprehensive reinforcement method, which is characterized in that the construction method comprises a vacuum pre-stressed precipitation and an electroosmotic precipitation. The execution steps are as follows: a) Establish a yard drainage system; b) Perform vacuum pre-stressed precipitation; c) Perform electroosmotic precipitation at the same time of step b), or when water output is lowered in step b; d) When degree of consolidation reaches a level higher than or equal to 85 percent, steps b) and c) are over to enter a low-energy forced ramming; e) Perform vibration steamroll to flatten the yard. Through composition of utilization of the two construction methods of the vacuum pre-stressed and electroosmotic precipitations, the invention retains advantages in prior vacuum pre-stressed construction methods. Meanwhile, in combination with the electroosmotic precipitation, the invention fulfills application of the vacuum pre-stressed construction method in sludge-like (low permeation factor) soft earth foundations, so that the reinforcement depth of the soft earth layer can be increased, but construction period can be shortened.

The invention discloses a method for preparing a high-dispersion loaded-type noble-metal powder catalyst. The method comprises the steps: (1) uniformly mixing powdery carriers with deionized water so as to form a suspension, and dissolving a noble metal precursor into deionized water so as to form an aqueous-phase solution; (2) adding the suspension into a stirring-vessel slurry reactor, carrying out stirring, and adjusting the pH value of the suspension to be alkaline; (3) atomizing the aqueous-phase solution, then, adding the atomized aqueous-phase solution into the stirring-vessel slurry reactor, precipitating noble metal ions in the form of noble metal precipitates, and enabling the precipitates to be adsorbed and deposited to surfaces of the powdery carriers in the suspension, so as to form uniform slurry; and (4) subjecting the slurry to stirring and aging at a certain temperature, anchoring the noble metal precipitates to the surfaces of the powdery carriers, then, carrying out reduction on the noble metal precipitates, and carrying out filtering and washing, thereby obtaining the high-dispersion loaded-type noble-metal powder catalyst. According to the method, the preparation process is simple and is easy to control, so that the method is suitable for industrially producing the high-dispersion loaded-type noble-metal powder catalyst.

The invention discloses a deep foundation pit precipitation support construction method applicable to a coastal region. The deep foundation pit precipitation support construction method comprises the following steps of digging a foundation pit according to the shape of preset space; forming support piles and a water stopping curtain on the periphery of the foundation pit; arranging steel plate water stopping piles on the inner wall of the foundation pit; and arranging a light well point between each steel plate water stopping pile and the corresponding adjacent support pile. By the deep foundation pit precipitation support construction method applicable to the coastal region, the light well points for precipitation and the steel plate water stopping piles are arranged pointedly according to staggered distribution conditions of quicksand layers and water-resisting layers of the coastal region, and a precipitation effect of the deep foundation pit is guaranteed. In addition, by the steel plate water stopping piles, underground water can be stopped from bypassing a channel of the water stopping curtain, piping and quicksand can be prevented, and the construction quality of the deep foundation pit of the coastal region is ensured.

The invention relates to the field of waterproof coating production and processing equipment, in particular to polyurethane waterproof coating production and processing equipment. The equipment comprises a support, a conveying structure, a sweeping structure, a scraping structure, a circulating structure and a dewatering structure. When the conveying structure continuously conveys packaging barrels, the sweeping structure can be synchronously driven to work, through work of the sweeping structure, a coating adhering to a conveying assembly on the conveying structure can be swept, and therefore the cleanliness of the conveying structure is guaranteed; and by installing the scraping structure at the bottom end of the support, the coating adhering to the conveying assembly can be scraped and cleared, the scraped coating can be collected, the cleanliness of the conveying assembly can be guaranteed, the scraped coating can be prevented from polluting the workshop ground, and the sweeping structure can synchronously drive the dewatering structure to work while working, so that the cleaned conveying assembly is wiped and dried, and a wiped assembly can be extruded and dehydrated.

The invention relates to a waterproof processing construction method for a framework bridge butt-connecting part. The waterproof processing construction method for the framework bridge butt-connecting part is particularly applied to the process of waterproof processing construction between a new framework and an existing framework bridge butt-connecting part after the new framework is ejected in place. The waterproof processing construction method for the framework bridge butt-connecting part comprises the following steps of removing concrete of an existing framework in a chiseling mode (steel bars are reserved), leveling the chiseled plane part of the existing framework through mortar, laying waterstop bands, erecting a formwork and pouring concrete, ejecting the framework in place, installing waterstop bands, pouring L-shaped groove concrete, cleaning impurities in stretchable seams, injecting waterstop materials, carrying out detachable waterstop band construction, carrying out EVA mortar construction, and laying top plate with waterproof coiling material wrapping outside. The waterproof processing construction method for the framework bridge butt-connecting part resolves the problems that the under water level is high and waterproof construction is difficult in the area, guarantees tight combination between the waterstop bands and an existing concrete surface of the old framework and adopts concrete with high an-seepage level, the concrete is vibrated fully, the tightness of the combination surface of the waterstop bands and the concrete is improved, and the waterproof effect is guaranteed.

The invention relates to a novel treatment method for leather sewage. By treating sewage by virtue of treating bacteria, the novel treatment method comprises the following steps: adjustment, aeration, sludge digestion, precipitation, sludge circulation, and the like. A primary sewage flocculation process in a traditional treatment method is omitted, and early adjustment of a sewage environment required in a traditional biological method is omitted, so that the operation steps are simplified, the COD and the removal rate of ammonia nitrogen are substantially increased, the dispersion of stink produced in an anaerobic digestion process is avoided, and the operating environment is improved; and meanwhile, the sludge is digested by virtue of the treating bacteria, so that the discharging amount of sludge is reduced.

The invention discloses a concentration method for floatation tailings and a concentration device; the concentration method comprises the following steps: coal slime water enters a tailing thickener through a feeding tube; a flocculating agent is mixed in coal slime ash through a flocculating agent dosing tube which is communicated with the feeding tube; the coal slime ash mixed with the flocculating agent is concentrated and cleared in the tailing thickener; a flocculating agent dosing point is arranged at the front edge of the tailing thickener; before the flocculating agent is mixed in the coal slime ash, a coagulating agent is mixed in the coal slime ash by a coagulating agent dosing tube communicated with the feeding tube; a coagulating agent dosing point is arranged in front of the flocculating agent dosing point by L meter; L=10*(Q/X)/(3.14*R2*3600), wherein Q is coal slime water flow, the unit of which is m<3>/h; X is the number of the feeding tubes; R is the radius of each feeding tube, the unit of which is m. The concentration method uses the time difference (10s) of the addition of the coagulating agent and the flocculating agent to lead the floatation tailing to be absorbed on few, scores of or even more group particles under the action of the flocculating agent; and mineral grains are connected together under the bridging action to form big loose and porous flocculus.

The invention discloses a construction process of an underground drainage pipeline, and relates to the technical field of pipeline construction. The construction process includes the following steps of S100, surveying and setting out; S200, well point mounting; S300, groove digging; S400, pipeline concrete foundation construction; S500, pipeline mounting; and S600, pipeline backfilling. A method that machine soil digging is used as a main measure and manual operation is used as an auxiliary measure is adopted. Manual slope repairing is used when the place is dug to the position 30 cm-40 cm away from the groove bottom by a machine, redundant soil at the groove bottom is cleaned away, and therefore the situation that undisturbed soil is disturbed by machine over-digging is avoided; and the soil digging ratio of human to the machine is 20:80, and the cubic meter of earth is stacked outside the position 1.5 m away from the groove side. The construction is easy and convenient, the construction difficulty is low, the construction influence time is greatly shortened, meanwhile, damage to an original structure is low, the reliability of an overall connecting structure is high, the sealingperformance of pipelines is high, and the influence on the safety of the structure is low.

The invention relates to the technical field of squeezing devices, in particular to a rapeseed squeezing device. The device comprises a squeezing box, the lower end of the squeezing box is fixedly connected with a supporting column, the lower end of the squeezing box is fixedly connected with a slag discharging pipe communicated with the interior of the squeezing box, and the upper end of the squeezing box is fixedly connected with a feeding pipe. The upper end of the feeding pipe is fixedly connected with a storage bin communicating with the interior of the feeding pipe, the front side of the squeezing box is fixedly connected with a first oil outlet pipe communicating with the interior of the squeezing box, a filtering box is arranged on the front side of the squeezing box, and a filtering mechanism is arranged in the filtering box. The oil flows into the filtering barrel through the first oil outlet pipe, the oil is filtered for multiple times, and therefore after the rapeseeds are squeezed, the oil does not need to be independently filtered. Therefore, according to the process, unnecessary troublesome steps are reduced, multiple times of filtration of multiple oil liquids are completed at the same time, and therefore the oil liquids are cleaner and purer. Impurities are prevented from being generated, so that the subsequent edible safety is ensured.

The invention relates to a foundation pit supporting and retaining structure and method combined with a high-pressure jet grouting technology. The structure comprises an enclosure structure arranged around the periphery of a foundation pit and used for supporting the foundation pit. Reinforcing bars are implanted into the enclosure structure from the side face, close to the foundation pit, of the enclosure structure. The reinforcing bars are attached to the side face, close to the foundation pit, of the enclosure structure. Concrete is jet-grouted to the side face, close to the foundation pit, of the enclosure structure through the high-pressure jet grouting technology, and a retaining barrier is formed. The reinforcing bars are anchored by the retaining barrier. The foundation pit supporting and retaining structure and method have the beneficial effects that the reinforcing bars are implanted into supporting piles,, the concrete is jet-grouted to the inner side face of the foundation pit through the high-pressure jet grouting technology, and the retaining barrier is formed, so that the universality of the foundation pit supporting and retaining structure is improved, and the precipitation effect is guaranteed.

The invention discloses an anaerobic medium-temperature lower suction type pyrolysis device which comprises a pyrolysis furnace as well as an anaerobic medium-temperature gas source mechanism, whereinthe pyrolysis furnace is internally provided with a grate; a feeding hole is formed above the grate and in the pyrolysis furnace; a sealed feeding device is arranged at the feeding hole in match; a discharge hole is formed below the grate and in the pyrolysis furnace; a sealed discharge device is arranged at the discharge hole in match; the anaerobic medium-temperature gas source mechanism is arranged outside the pyrolysis furnace and is used for providing flue gas into the pyrolysis furnace; the anaerobic medium-temperature gas source mechanism comprises a combustor; a combustible gas collector is arranged on the pyrolysis furnace and below the grate to form a lower suction type structure; and the combustible gas collector is led outside the pyrolysis furnace through a combustible gas collection pipeline. As a medium-temperature field is formed in the pyrolysis furnace, the separation temperature can be effectively controlled, biomass in the pyrolysis furnace can be at an optimal separation temperature for separating a combustible gas, and furthermore, the separation effect of the combustible gas can be ensured.

The invention discloses a sewage control system which comprises an outer shell, supporting legs arranged below the shell, a cover plate arranged on the shell, an overflow type sewage treatment structure arranged in the shell and a water pump arranged on the cover plate. The overflow type sewage treatment structure comprises a water inlet formed in the cover plate, a water pipe for communicating between the water inlet with the water pump, a water inlet pipe arranged on the water pump, a first water outlet formed in the lower part of the outer shell, an inner shell arranged in the outer shell, a first connecting block used for connecting the outer shell and the inner shell, a first inclined surface arranged on the inner shell, a precipitation structure arranged in the inner shell, and a pollution discharge structure arranged at the bottom of the inner shell. According to the invention, through an overflow mode and by utilizing the principle of sediment sinking, sediment and water are effectively separated, so that the finally prepared water is clearer, the treatment effect is more excellent, and the cost is lower.

The invention discloses a precipitation inclined shaft in a deep foundation pit and a construction method of the precipitation inclined shaft. A shaft pipe is arranged in the precipitation inclined shaft, a filling layer is arranged between the outer wall of the shaft pipe and the inner wall of the precipitation inclined shaft, the middle-lower section of the filling layer is a filter section, andthe upper section of the filling layer is a sealing section; the bottom end of the shaft pipe is closed, an opening is formed in the shaft wall of the shaft pipe of the filter section, and a 60-meshor 80-mesh filter screen is wound outside the shaft pipe; the filter section is filled with gravel with the particle size of 3-7 mm; the sealing section is filled with clay, and the filling degree isnot lower than 90%; centering supporting legs in three directions are arranged on the lower section, the middle section and the upper section of the shaft pipe in the circumferential direction, the interval between every two centering supporting legs is 120 degrees, a centering support is fixed to the outer wall of the shaft pipe wound with the filter screen through screws, and one supporting legfaces the position over the other supporting leg; and the included angle between the precipitation inclined shaft and the vertical direction is 30-70 degrees. The precipitation inclined shaft and theconstruction method thereof have the beneficial effects that the lower space around the foundation pit is fully utilized, the problem that the ground surface construction space is insufficient is thoroughly solved, and the construction risk of damaging underground facilities such as pipelines and structures is avoided; and the safety and the stability of foundation pit engineering are effectivelyimproved.

The invention discloses an intelligent precipitation control system and an operation method. The intelligent precipitation control system comprises a data acquisition module, an analysis processing module, an operation management module, a wellhead controller and a precipitation operation module which are connected in sequence, wherein the data acquisition module is used for transmitting all acquired data to the analysis processing module; and the analysis processing module is used for generating a control instruction for the acquired data according to a data analysis program input in advance and by referring to an instruction of the operation management module, and transmitting the control instruction to the wellhead controller. By arranging the underground data acquisition module, related water level information can be acquired in time conveniently, and the problem that a precipitation technology is in a relatively low-end operation mode in an existing state and needs to depend on manual extensive management is solved. By arranging the precipitation operation module, a drainage effect can be effectively achieved, and a series of problems of low precipitation efficiency, large construction potential safety hazards, serious energy waste, excessive exploitation and waste of underground water and the like are solved.

The invention discloses a self-produced fuel gas combustion linkage type pyrolysis and gasification device. The self-produced fuel gas combustion linkage type pyrolysis and gasification device comprises a pyrolyzing furnace; a fire grate is arranged in the pyrolyzing furnace; the fire grate is an active fire grate; a feeding port is formed at the position of the pyrolyzing furnace above the fire grate; a closed feeder is arranged at the position of the feeding port; a discharging port is formed at the position of the pyrolyzing furnace below the fire grate; a closed discharger is arranged at the position of the discharging port; the self-produced fuel gas combustion linkage type pyrolysis and gasification device also comprises an anaerobic medium-temperature gas source mechanism which is arranged outside the pyrolyzing furnace and supplying flue gas to the pyrolyzing furnace; a combustible gas collector is arranged in the pyrolyzing furnace; the combustible gas collector is guided outof the pyrolyzing furnace through a fuel gas collecting pipeline; the fuel gas collecting pipeline is in by-pass connection with a return branch pipe; and the return branch pipe is connected with an input pipeline of the anaerobic medium-temperature gas source mechanism. According to the self-produced fuel gas combustion linkage type pyrolysis and gasification device, the self-produced fuel gas iscombusted to supply anaerobic medium-temperature flue gas to the pyrolyzing furnace, a medium-temperature temperature field is formed in the pyrolyzing furnace, and the precipitation temperature canbe effectively controlled.

The invention discloses a dewatering construction method for a near-lake superfine sand soil foundation pit, and belongs to the field of foundation pit dewatering. The dewatering construction method comprises the following steps that: step 1, through calculation, a hole is drilled outside a basement foundation pit superfine sand soil foundation pit slope, the diameter is equal to the diameter of a non-fine concrete pervious pipe plus 600 mm, and the depth determined through calculation must be reached; step 2, non-fine concrete pervious pipes are wrapped with single layer of corrosion-resistant dense-mesh filter cloth; step 3, the non-fine concrete pervious pipes wrapped with the single-layer corrosion-resistant dense-mesh filter cloth are sequentially installed, and the part between every two sections of non-fine concrete pervious pipes is wrapped with double-layer corrosion-resistant dense-mesh filter cloth; step 4, after installation is completed, the periphery of the non-fine concrete pervious pipes wrapped with the single-layer corrosion-resistant dense-mesh filter cloth are filled with a filter material; and step 5, a water pump is installed in each non-fine concrete pervious pipe, and the non-fine concrete pervious pipes are each connected with a drainage pipe. Loss of superfine sand soil in a dewatering process can be eliminated at a time, the dewatering effect is guaranteed, the superfine sand soil at the foundation pit slope can be dried for a long time, and then the stability of the foundation pit slope is guaranteed.

The invention belongs to the technical field of building construction, and particularly relates to a double-sleeve artesian deep well dewatering construction method for muddy silty clay silty soil. The double-sleeve artesian deep well dewatering construction method comprises the following steps of (1) measuring and positioning a deep well, digging a pit and detecting an obstacle; (2) deep well hole forming; (3) lowering a coarse filter pipe and filling the coarse filter pipe with a coarse filter material; (4) well washing; (5) lowering a fine filter pipe and filling the fine filter pipe with afine filter material; (6) trial precipitation; (7) implementing precipitation; and (8) plugging a tube well. The method has the beneficial effects that firstly, soil property parameter characteristics are defined through geological exploration, and it can be ensured that underground water can well permeate into the deep well and clean water basically flows into the well by adopting a double-filtering measure of combining the coarse filter pipe and the fine filter pipe; the precipitation effect is effectively guaranteed, and the good precipitation effect is shown in the two aspects of large water yield and clear water discharge; and the defects of small water yield, turbid effluent and the like in the prior art are overcome, and it can be ensured that deep well precipitation meets the design and construction requirements.

The invention discloses a phosphorus containing wastewater treatment system and a treatment method thereof, wherein the treatment system at least comprises a pretreatment pool, a coagulation sedimentation device, a sand filter tank and a clear water regulation pool which are sequentially connected; the pretreatment pool is used for enabling macromolecular pollutants to be reacted with a reducing agent to produce small molecule pollutants under the acid condition and is internally provided with an ORP determination device and a stirring device; the coagulation sedimentation device is used for enabling the pollutants to form difficult-soluble matters to be separated from water; the sand filter tank is used for removing fine suspended particulate matters in wastewater; and the clear water regulation pool is used for regulating a pH value of clear water to be between 6 and 9. In the technical scheme of the invention, the design is ingenious, and the structure is simple; by arranging the pretreatment pool and performing pretreatment on the wastewater with the reducing agent, macromolecular chains are broken to obtain small molecules, so that the subsequent coagulation effect of the wastewater is improved, the advantageous condition is provided for subsequent sedimentation treatment, the removal efficiency of organic phosphorus is grealty improved, and the final effluent quality is ensured.