414results about How to "Improve governance effect" patented technology

The invention discloses a mineralized water purifying agent which loads magnetotactic plant source microorganisms and a preparation method thereof. The preparation method comprises the following steps: acclimating animal source microorganisms into plant source microorganisms by using a plant source culture solution, wherein the animal source microorganisms comprise anaerobic and aerobiotic microorganisms which are in a weight ratio of 1:1; and acclimating the plant source microorganisms into plant source magnetotactic microorganisms, then loading on sandy mineral stone powder to form biological minerals so as to generate a purifying fungicide. According to the invention, purchased animal source microbial strains are acclimated to recover the original wild nature of microorganisms so as to quickly survive, adapt and propagate. The problem that common microbial water quality purifying treatment fungicide splashed just floats on the surface, cannot submerse in water and cement sludge quickly, is easy to wash away by water flows, needs to be input frequently and is high in operating cost is solved. The preparation method can be cooperated with the original comprehensive treatment system and task, so that the treatment difficulty is greatly reduced, the treatment effect is improved, and the preparation method has the price advantage compared with that of conventional dredging manner.

The invention discloses treatment equipment for soil contamination. The treatment equipment comprises a base plate, a cylinder body, a water tank, a crushing cavity and a stirring cavity; the upper end of the base plate is fixedly connected to the crushing cavity through a supporting rod; the lower end of the right side of the crushing cavity communicates with the upper end of the left side of thestirring cavity through a through hole; the water tank is arranged at the upper end of the stirring cavity and communicates with the cylinder body arranged at the left end of the water tank through aguide pipe;a one-way valve is arranged in the guide pipe; a feed hopper is arranged at the upper end of the crushing cavity; a second motor is fixedly arranged at the lower end of the stirring cavity; the output end of the second motor is fixedly connected to a second rotating shaft; the lower end of the cylinder body communicates with spray pipes arranged at the upper end of the inner side of the stirring cavity through a guide pipe. The treatment equipment has the advantages that the design is novel, the operation is easy, soil is stirred when the soil is crushed and is added with an agentso that the agent can make full contact with the soil, the soil can be treated thoroughly, and therefore the defect that the soil is not comprehensively treated can be overcome, and the treatment effect can be improved.

The invention discloses a saline-alkali land soil conditioner and a preparation method thereof. The saline-alkali land soil conditioner is prepared by adding water in citric acid, polymaleic acid-acrylic acid copolymer, sodium polycrylate and fatty alcohol-polyoxyethylene ether. The preparation method comprises the following steps: weighing raw materials in weight proportioning; adding partial water in a reaction kettle for heating to 50-60 DEG C; adding the fatty alcohol-polyoxyethylene ether, the polymaleic acid-acrylic acid copolymer, the sodium polycrylate and the citric acid in the reaction kettle in turn for fully dissolving; subsequently, adding rest water in the reaction kettle and cooling to 20 DEG C; and after sampling and qualified inspection, measuring and packaging to form a finished product. By using the conditioner, the physical and chemical properties of the saline-alkali soil are obviously improved, heavy metal ions are complexed, emulsification and oil removal are achieved, salinity infiltration is accelerated, alkaline of soil is neutralized, and the pH value is regulated; and the desalination amount of the conditioner can reach above 50%, and the conditioner has the advantages of short improvement period, durable management effect and universality, saves water, increases benefits, yield and income and is environment-friendly.

The invention relates to a laneway disposing shape of a coal mine, in particular to a laneway disposed by using large U to sleeve small u, which solves the problems of driving along a groove and gas control of a stope in the prior laneway disposing mode. The laneway comprises a stope, a small u-shaped laneway is arranged at the periphery of the stope, the small u-shaped laneway comprises a belt laneway and a return airway which are arranged on both sides of the stope, the front side of the stope is provided with a cutting hole, a large U-shaped laneway is arranged outside the small u-shaped laneway and comprises a head-to-tail connection device, a ventilation laneway, a ventilation connection laneway and a gas tail laneway, wherein the head-to-tail connection device and the ventilation laneway are positioned outside the belt laneway, the ventilation connection laneway is arranged outside the cutting hole, the gas tail laneway is positioned outside the return airway, and a plurality ofentity supporting coal pillars are arranged between the large U-shaped laneway and the small u-shaped laneway. The laneway disposing shape solves the problem of gas control of the stope and increaseswork efficiency.

The invention provides a treatment and recovery method of 2-aminopyridine production waste water, comprising separating organic layer from waste water via an oil separation pool, depressurizing, distilling and recovering 2-aminopyridine, adjusting pH of aqueous layer via a diluted acid until neutral, cooling, crystallizing, depressurizing, extracting and filtering to obtain crude salt, purifying and recovering inorganic salt via recrystallization, using adsorption column stuffed with high-crosslinked adsorption resin to absorb and remove organics, collecting effluent to be used for hydrolysis or be discharged via biochemical treatment, eluting the adsorption resin via sodium-hydroxide-alcohol solution to be regenerated via methanol to be repeatedly used, neutralizing and combining the desorption solution and organic layer, distilling to recover 2-aminopyridine. The treatment and recovery method of 2-aminopyridine production waste water has the advantages of improved waste water treatment effect and recovered useful material in waste water, thereby reducing pollution, saving cost and combining waste water treatment and resource recovery.

A technological process for treating oily waste water in oil field does not adopt the biological technology with harsh requirement, and directly utilizes the intensified demulsifier to make intensified demulsification of waste water in which the oil must be intercepted and sand must be removed, then adopts the air-float process to directly make oxidation reduction reaction and flocculation adsorption action, then utilizes several filtering media to make complete filtration so as to implement waste water discharge reaching the standard.

The invention provides a three-dimensional floating bed for purification of black and odorous rivers and a building method for the three-dimensional floating bed. A fence formed by PVC pipes and polyvinyl net is divided from top to bottom into an upper layer of floating plant growing region, a middle layer of artificial medium region and a lower layer of artificial medium region, wherein water plants with relatively developed root systems are planted on the upper layer; a biological membrane is formed on the middle layer by hanging pieces with rough surfaces and acts together with the root region of the plants on the upper layer, and organic substances are decomposed by oxygen generated by the plants; floating filler net is hung on the lower layer, and is filled with anaerobic bacteria according to different forming reasons of the black and odorous rivers, wherein the anaerobic bacteria are attached to an artificial hanging membrane, and domesticated to achieve high tolerance and degradation capability to pollutants. The three-dimensional floating bed provided by the invention has the advantages as follows: the manufacturing method of the floating bed is simple and convenient, the cost is lower, and the three-dimensional floating bed has an enhanced improvement effect on black and odorous rivers with high pollutant burdens.

The invention discloses a mini-type hand-push soil governing device, which comprises a shell body and a track travelling device; the left side of the shell body is hinged with a shovel plate; one sideof a main rotary shaft closing to a feeding opening is fixedly connected with a vertical smashing cutter blade; a sprayer is arranged at the place where the shell body is located at the upper part ofthe right side of the vertical smashing cutter blade. Through the shovel plate and the vertical smashing cutter blade, soil is efficiently collected and smashed to facilitate the subsequent mixing. The mini-type hand-push soil governing device is provided with a mixing tank, the soil disinfectant raw materials are efficiently mixed and blended, thus the disinfectant homogeneity is better; the spraying effect is guaranteed while the raw materials are saved. The horizontal smashing cutter blade can efficiently smash the solid soil improver so as to mix and contact with soil and improve the mixing effect. A first spiral blade is provided and used for fully and efficiently mixing the soil with the drug; moreover, the soil governing effect is improved, and the operation is continuous and high-efficient.

The invention relates to a heavy metal trapping agent in the field of environment protection. The heavy metal trapping agent is prepared from polymer containing a polyethylene diamine tetra-acetic acid unit, wherein by weight percentage, the content of the polyethylene diamine tetra-acetic acid unit is 45-100% of polymer; the polymer is homopolymer or copolymer; the polyethylene diamine tetra-acetic acid unit is a form of sodium salt, potassium salt or ammonium salt. The defect that a chelate compound of existing ethylenediamine tetra-acetic acid and the heavy metal is generally soluble is overcome, and the provided heavy metal trapping agent has strong heavy metal chelating power, and the solubility can be controlled by pH of the solution; moreover, the trapping agent is free of toxicity.

The invention discloses soil repair and treatment equipment, comprising a repair bin, a feeding hole, main crushing blades, stirring frames, a mixing drum and a discharge hole, wherein the outer wallof the left side of the repair bin is fixedly connected with a first motor, a shaft-extension end of the first motor is fixedly connected with a rotating shaft; a sleeve sleeves the rotating shaft; the stirring frames are respectively arranged at the upper side and the lower side of the sleeve; the plurality of main crushing blades are distributed on the rotating shaft; a plurality of auxiliary crushing blades are distributed on the stirring frames; the right end of the rotating shaft is fixedly connected with a crank, a connecting rod sleeves the crank, and the crank is rotatably connected with the connecting rod; a piston barrel is arranged under the crank. The stirring frames are used for stirring the soil, and the main crushing blades and the auxiliary crushing blades are matched for crushing the soil, so that the crushing efficiency of the soil is greatly increased, the soil is more evenly mixed with a repair agent, and the soil treatment effect is improved; the repair agent in the mixing drum is stirred by using stirring rods and stirring blades while the soil is treated, so that the repair agent is prevented from precipitating, and the repair effect is guaranteed.

The invention discloses a system and process for removing PM2.5 through wet flue gas demercuration and cooperative desulfurization. The system comprises a bag type dust collector, a wet desulfurization absorption tower, an oxidation tower, a wet electric precipitator, an oxidizing agent preparation device and an integrated oxidation and demercuration byproduct preparation structure comprising a waste reservoir, a settling pond and a solid-liquid separator. The process comprises the following steps: dissolving and absorbing particulate mercury and Hg<2+> in flue gas on a slurry spraying layer during wet desulfurization, thus realizing first-stage demercuration; further oxidizing elemental Hg0 in the flue gas into Hg<2+> by adopting an oxidizing agent, and dissolving and removing the Hg<2+>; removing residual Hg<2+>, particulate mercury, PM2.5 and acid mist in the flue gas by adopting the wet electric precipitator; and preparing byproducts from oxidation and demercuration liquid wastes by adopting a precipitation separation method. According to the system and process, effective demercuration and cooperative desulfurization and fine particle removal are realized, the byproducts are effectively recycled, secondary pollution is avoided, and a comprehensive flue gas treatment effect is improved.

The invention provides a smart city platform for urban governance, which includes establishing a city CIM early warning model, a Urban three-dimensional transportation thematic system, a urban environmental information thematic system, a urban government affairs service thematic system, a urban economic operation thematic system, a urban safety production thematic system, a urban infrastructure thematic system based on 3D GIS model and AI intelligent early warning , to achieve the monitoring, processing and operation of the overall intelligence of the city. Through the integration ability of urban thematic application to information and urban Internet of Things perceptual resources, it plays a universal role in the three-dimensional transportation, economic operation, safety in production,infrastructure, government services and other important livelihood services. The application in urban governance and public services is conducive to promoting the coverage of basic public services indifferent levels, different regions and different groups, effectively improving the level of public services and their equal coverage, assisting government decision-making, crisis management, and enhancing government governance capacity.

The invention provides a method for treating blue-green algae. The method includes the following steps of detecting a water body, placing padding and plants, mounting oxygenation devices, domesticating microorganisms, adjusting the water body, putting compound microorganisms, building an ecological system and strengthening treatment; wherein the water body to be treated is detected, pretreatment is conducted, a proper amount of water is taken to serve as habituated culture water for inhibiting external microbial communities for the algae, compound bacteria, enzymes and sugar are added to the habituated culture water, meanwhile, screening is conducted on the beneficial microorganisms three times to five times according to the existence condition of original indigenous and beneficial microorganisms of the water body, the screened beneficial microorganisms are extracted to be subjected to enlarge cultivation, the cultured composite microorganisms are put into the water body required to be treated, the composite microorganisms can destroy the blue-green algae structure, and accordingly, a proper growth breeding condition is provided for follow beneficial microorganisms and animals. According to the main mechanism of the method, the blue-green algae structure is mainly destroyed and utilized, and the method has the advantages of being advanced, reliable, safe, operable, low in investment and capable of generating the effect quickly and finally achieving the purpose that the water quality is purified.

The invention discloses a trichloroacetaldehyde soil pollution treatment device. The left end of a corrugated pipe is fixedly connected with a bucket, the upper end of the bucket is fixedly connectedwith an air pressure telescopic rod, and the air pressure telescopic rod is fixedly connected with a device body; and a medicament tank is arranged at the left end of the upper part of a sleeve, the right end of the medicament tank is fixedly connected with a conduit, and the upper part of the left end of the medicament tank is fixedly connected with a drug injection tube, the upper part of the right end of the medicament tank is fixedly connected with a gas guide tube, and the middle part of the gas guide tube is fixedly connected with an air compression pump, and the air compression pump iselectrically connected with a power box. According to the trichloroacetaldehyde soil pollution treatment device, a rotary tillage roller is driven by engine wheels to rotate so as to drive soil digging blades to plough soil, a swing arm can control the height of the rotary tillage roller so that the soil digging depth can be adjusted, soil loosening effect is good, the soil is transported upwardsthrough a spiral lifting rod and is mixed with an alkaline fertilizer, the soil and the fertilizer are fully mixed by stirring teeth, and treatment is more thorough; and the trichloroacetaldehyde soilpollution treatment device has the advantages of being reasonable in structural design, treatment effect of the organic pollutant trichloroacetaldehyde soil pollution is greatly improved, so that theenvironment is facilitated.

The invention discloses a preparation method of a Ag / Fe3O4 / nano-cellulose tri-element composite material. Nano-cellulose is used in the preparation method and plays a role as a reducing agent, and improving of binding strength between Ag and Fe3O4 nanoparticles is facilitated. The preparation method is environment-friendly, pollution-free and high in reaction selectivity and reaction efficiency; water is used as a solvent, so that the preparation method is wide in raw material source and low in cost, and production cost is lowered. The Ag / Fe3O4 / nano-cellulose tri-element composite material can be prepared through a hydrothermal method and a microwave hydrothermal method, so that industrialization is facilitated.

The invention discloses intermittent type pesticide spraying soil repairing equipment. The intermittent type pesticide spraying soil repairing equipment comprises a box, a base, a liquid pesticide box, a hydraulic cylinder, a damping base, a rotation rod, stirring blades and a liquid spraying pipe. The box is arranged on the top of the base in an erected through the damping base arranged at the bottom end of the box. The rotation rod is rotationally erected in the box. The multiple stirring blades are evenly distributed on the rotation rod. The bottom of an inner cavity of the liquid pesticidebox communicates with an inner cavity in the upper portion of the hydraulic cylinder. The liquid spraying pipe is embedded in the inner wall of a top plate of an inner cavity of the box. The liquid spraying pipe communicates with the inner cavity in the upper portion of the hydraulic cylinder through a hydraulic cylinder outlet pipe. A guiding column is arranged on the outer end face of a rotation disc and sleeved with a lifting loop bar in a sliding manner. A push-pull rod is fixedly arranged at the top end of the middle portion of the lifting loop bar. The top end of the push-pull rod is fixedly connected with the bottom of a piston in the inner cavity of the hydraulic cylinder. The intermittent type pesticide spraying soil repairing equipment is good in damping and noise lowering effect, intermittent supply of liquid pesticide can be achieved, sufficient mixing of liquid pesticide and soil is achieved, the soil treatment effect is good, and the intermittent type pesticide sprayingsoil repairing equipment is suitable for usage and popularization.

The invention discloses a method and a device for collecting and treating sludge in a shallow lake. The method comprises the following steps: digging a ditch at the bottom of the lake in advance, arranging a floating platform on the lake surface near the ditch, arranging a sludge treating device on the floating platform, pumping the sludge in the ditch into a mud sump, stirring the sludge in the mud sump, separating mud from water, solidifying and the like. The device comprises the mud sump, a mud and water separator and a sludge solidifying device, and is characterized by further comprising the floating platform, wherein the mud sump, the mud and water separator and the sludge solidifying device are arranged on the floating platform; relatively dry solidified sludge is transported to a place requiring the sludge by a sludge transporting ship. By the method and the device for collecting and treating the sludge in the shallow lake, not only can the water quality of the shallow lake be improved, the control effect can be improved and the control cost can be reduced, but also arable land is not occupied and secondary pollution to the environment is avoided; sludge at the bottom of the shallow lake can be collected on the water surface of the shallow lake and treated on site.

The invention discloses a mountain torrent disaster control capability evaluation method, which comprises the steps of 1, collecting data of a to-be-analyzed region as initial data, and determining evaluation indexes; 2, directly assigning values to the quantitative indexes; carrying out index quantification on the qualitative indexes by utilizing a Delphi method and then carrying out assignment;3, determining the weight of each evaluation index by using subjective weighting and an analytic hierarchy process and objective weighting and using an entropy weight method, and determining a comprehensive weight by combining the subjective weighting method and the objective weighting method; and step 4, establishing a mountain torrent disaster control capability evaluation model, and performinganalysis and evaluation according to a model calculation result. By establishing the evaluation system and comprehensively considering the risk of the mountain torrent disasters and the mountain torrent disaster resistance, the control capacity of the mountain torrent disasters is evaluated, the disaster management level of the government can be improved, the flood control capacity of hilly areascan be improved, and the effect of mountain torrent disaster control measures can be known more visually.

The invention discloses a soil remediation agent formula for cadmium-arsenic polluted rice planting. The soil remediation agent formula is prepared from, by weight, 25-30 parts of quicklime, 10-15 parts of an iron agent, 8-10 parts of a silicon raw material, 5-8 parts of phosphate, 10-15 parts of a natural mineral material, 6-10 parts of humic acid, 8-10 parts of acidified activated carbon, 5-8 parts of weathered lignite, 9-12 parts of sepiolite powder and 2-4 parts of chitosan. The invention further discloses a preparation method of the soil remediation agent formula for cadmium-arsenic polluted rice planting. The effective-state cadmium content and the effective-state arsenic content in rice planting cultivated land (paddy field) polluted soil are effectively reduced, so that the rice cadmium content and the rice arsenic content in rice grains are reduced; meanwhile, the effects of increasing the rice yield and improving the soil fertility are achieved; and the formula has the advantages of no secondary pollution, strong practicability and simple process, and has huge development potential in the soil combined pollution remediation application of the rice planting farmland (paddyfield).

The invention discloses a treatment device for cadmium contaminated soil. The device is characterized in that the left side of a motor is rotatably connected to a driving shaft, wherein the driving shaft is in rolling connection with a first conveyor belt, and the lower end of the first conveyor belt is in rolling connection with a driven shaft; the driven bearing is rotatably connected to a fertilizer box through a bearing; a small bevel gear which is engaged with a big bevel gear is fixedly connected to the left end of the driven shaft; the big bevel gear is fixedly connected to a rotating shaft; the rotating shaft is rotatably connected to a device body through the bearing, and a gear which is engaged with an annular rack is fixedly connected to the middle part of the rotating shaft; the annular rack is fixedly connected to a turntable. According to the device, a through hole in the turntable communicates with a guide pipe at the bottom part of a storing box in a reciprocating manner through the rotating turntable, and thus the intermittent feeding function is realized; and meanwhile, the rotating turntable is capable of driving a stirring shaft to rotate so as to drive a stirring bar to rotate to primarily crush soil bocks at the upper parts of the storing box, and then the soil blocks are continuously crushed through a rotating crushing roller and an abrasion-resistant plate. The device is reasonable and practical in structure design; the contaminated soil treatment effect is greatly improved; the crushed oil can be mixed with organic fertilizer, so that the soil can be improved.

The invention relates to a method for treating waste lye discharged by the reaction system when octanol is produced. The recycled lye part discharged by an octanol production device is sent to an acidification mixer, inorganic acid and fusel are added for acidification mixture, demixing fluid is clear and separated by quiescence; extraction phase returns to a fusel tank for recycling, wastewater after neutralization is discharged to sewage farms for carrying out biological treatment; the mixing time is 3-15 minutes, the proportion by volume between the extraction agent and the wastewater is 1:1-8, the pH value after acidification is 2.0-4.5, the proportion by volume between the wastewater and 93% of concentrated sulphuric acid is 40-80:1, normal temperature and normal pressure are kept, the separated time is 30-120 minutes, the pH value of the treated water by neutralization is 6-9, the deoiling ratio is over 82%, the ratio of CODcr removal reaches 50%, biodegradability of the wastewater after treatment is improved from 40% to over 90%, the wastewater after treatment can directly enter chemical sewage farms for carrying out biological treatment, and the extraction agent does not need be regenerated.

The invention provides a 10kV line change relationship evaluation method based on a grey correlation analysis method. The method comprises steps that S1, original data of same period line loss evaluation of the transmission line is collected; S2, the collected original data is pre-processed; S3, the correlation degree is acquired through a grey correlation analysis method; S4, transformers with low correlation degrees are selected after sorting according to the correlation degrees; and S5, a Granger causality test method is utilized to test whether the transformers with the low correlation degrees are causes for line loss power generation, and the transformers with the abnormal line change relationship are determined based on the test result. The method is advantaged in that the human andfinancial resource consumption is reduced, the line change relationship of a power system is effectively and quickly sorted, the number of lines with disqualified line loss is quickly reduced, the causes of abnormal line loss are ascertained, the effect of line loss treatment is effectively improved, and the improvement bottleneck of the same period line loss evaluation index in the prior art is broken through.

The invention discloses a safe and efficient treatment device of polluted soil. The device comprises a feeding pipe, a pulverizing machine, a treatment box, a drug spraying tank, a drug adding pipe, aspraying row, a heating device, a rotary circular platform, a discharging pipe and an ultraviolet lamp, the feeding pipe is arranged on the top of the treatment box, the pulverizing machine is arranged in the treatment box, one side of a shaking plate is hinged to the inner wall of the treatment box, a rotary motor is installed in an oblique chamber, a rotary shaft is arranged on the rotary motor, the rotary circular platform is arranged on the top of the rotary shaft, turning cutters are uniformly arranged on the side wall of the rotary circular platform, the drug spraying tank is installedon the top of the treatment box, the drug spraying tank is communicated with the spraying row through a liquid delivering pipe, the spraying row is arranged in the top end of the treatment box, the heating device and the ultraviolet lamp are installed on the inner wall of the treatment box, and universal wheels are arranged on the side face of the bottom end of the treatment box. By means of the treatment device, sterilization is conducted on the polluted soil, the breeding and spreading of harmful germs are prevented, the safety is improved, the soil treatment effect is improved, the structure is simple, and the device is convenient to use to facilitate popularization.

The invention discloses an earthquake disaster risk assessment and countermeasure analysis system. The system starts from five aspects of earthquake disaster risk investigation management, earthquakedisaster risk assessment, earthquake disaster loss pre-assessment, earthquake disaster risk treatment auxiliary decision and earthquake disaster risk assessment public service. The whole process frominvestigation, evaluation to governance of the earthquake disaster risk is covered, and a scientific technical platform is provided for improving the earthquake disaster risk evaluation and governancecapacity. The formation of a key technical system for earthquake disaster risk prevention in China is effectively promoted, and a scientific and technological application technology for reducing earthquake disaster risks is promoted. Scientific basis can be provided for government to carry out earthquake disaster risk prevention and control and the like, and the earthquake disaster risk prevention capacity is effectively improved, so normal disaster reduction is achieved, and the earthquake disaster risk is effectively reduced. Important engineering such as national energy development strategies, economic development strategies and the like, social and economic development and life and property safety of people are guaranteed, and important actual quakeproof and disaster reduction significance is achieved.

The invention discloses a fire prevention method for a coal gangue mountain. The fire prevention method comprises the steps of: determining a spontaneous combustion fire area in the coal gangue mountain; performing presplitting permeability improvement for the coal gangue mountain in the spontaneous combustion fire area; and performing injection cooling for the coal gangue mountain after the presplitting permeability improvement. The fire prevention method can effectively determine the spontaneous combustion fire area, then performs the permeability improvement and the cooling for the spontaneous combustion fire area of the coal gangue mountain by using a presplitting permeability improvement system, and finally injects a composite inhibition foam material in the spontaneous combustion fire area of the coal gangue mountain by using an injection system, so that a high-temperature point is reduced below a spontaneous combustion fire point of coal gangue, oxygen is isolated, the purpose of preventing coal gangue fire is radically achieved, and the governance effect on the coal gangue mountain is improved.

The invention discloses an ecological floating island for remediation and treatment of black and odorous water. The ecological floating island comprises a floating base, a net-shaped cylinder base, a floating ball, a balance frame, a steel wire rope and a fixing rivet, the net-shaped cylinder base is welded with the bottom of a purification base, and the floating base is fixed to the junction of the purification base and the net-shaped cylinder base and located on the outer side wall of the purification base; a driving motor is installed in a top protrusion of the purification base, and one end of a rotary shaft extends to the bottom of the net-shaped cylinder base and is provided with a rotary rack; the balance frame is installed at the bottom of the rotary rack, the steel wire rope is connected with the center of the bottom of the balance frame, and the fixing rivet is fixed to one end of the steel wire rope. According to the ecological floating island for remediation and treatment of the black and odorous water, by installing the floating base, the purification base and the floating ball and forming ecological planting grooves, the black and odorous water can be effectively adjusted through the rhizomes of aquatic plants, floating objects on the surface of the water can be effectively collected through the floating island, and the area of the purified water is increased. The problems are solved that a traditional sewage purification device is single in function, small in purification area, long in treatment time, low in purification speed, high in maintenance cost and the like.

The invention provides a coal mine drilling angle measuring system and method; the coal mine drilling angle measuring system comprises a laser reference line transmitting device and a digital angle measuring device, wherein the laser reference line transmitting device is used for generating a first laser plane and a second laser plane, which are vertical to each other; the first laser plane is coincided with an intersecting line of inner walls of a roadway and a midline of the roadway; the second laser plane is intersected with a drill pipe to be measured; the digital angle measuring device is used for measuring the angle of the drill pipe according to the second laser plane; and the digital angle measuring device is arranged on the drill pipe intersected with the second laser plane. Through the adoption of the coal mine drilling angle measuring system and method provided by the invention, the accuracy of drilling angle measuring parameters is enhanced, the construction quality of coal mine gas treatment drill hole is guaranteed, and a gas treatment effect is enhanced.

The invention relates to a method for processing hexavalent chromium pollution employing synergistic effects of mixed bacteria, and belongs to the technical field of environment bioengineering. The processing method provided by the invention comprises the following steps: separating, purifying and screening a bacillus: B1 and a geotrichum: G1 from hexavalent chromium-polluted soil; individually cultivating the bacillus and the geotrichum to obtain a single bacterium solution; and inoculating the bacterium solution into a same polluted water body at the volume ratio of 1 to 1, and mixing and cultivating for processing hexavalent chromium pollution. The bacillus and the geotrichum are mixed and inoculated into chromium-containing wastewater; the defect that a single bacterium has strict requirements on inflow pH is overcome by different tolerance ranges of the pH values (pH) of two bacteria and the synergistic effects of the bacteria; the initial pH tolerance range of an inoculating microbe on the wastewater is improved; the preprocessing cost is reduced; and meanwhile, the processing effect on the hexavalent chromium-polluted wastewater is improved.

The invention discloses a soil treatment device convenient to adjust. The soil treatment device convenient to adjust comprises a rack body, a movable plate, a rotating drum and a liquid storing box; the rotating drum is arranged under the movable plate, liquid outlets which are horizontally formed are evenly distributed in the rotating drum, multiple groups of blades are arranged on the outer drumwall of the rotating drum in the length direction at equal distance, and a hollow rotation shaft is connected to the center of the top of the rotating drum; the liquid storage box is fixed to the center of the top of the rack body, and a liquid outlet pipe is connected to the center of the bottom of the liquid storage box and goes deep into the bottom of an inner cavity of the rotating drum; anda left-side screw body and a right-side screw body of a two-way screw are symmetrically sleeved with screw sleeves matched with the left-side screw body and the right-side screw body, a connecting rodis hinged to the bottom of each screw sleeve, and the other end of each connecting rod is hinged to the top of the movable plate. According to the soil treatment device convenient to adjust, the soiltreatment deep can be conveniently adjusted, the using flexibility is high, treatment liquid can make full contact with soil, and then the treatment effect is improved.