121 results about "Evaporation pond" patented technology

In some embodiments, a method may include reducing the microbial load in contaminated water of water recycle loops. These water recycling loops may include pulp and paper mills, cooling towers and water loops, evaporation ponds, feedstock processing systems and / or non-potable water systems. The methods may include providing a peracetate oxidant solution. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate solution may provide bleaching, sanitizing and / or disinfection of contaminated water and surfaces. The peracetate oxidant solution may provide enhanced separation of microbes from contaminated water.

The energy-saving solar sea water desalinating device has sea water evaporating pond, transparent heat insulating ceiling, sea water inlet pipe to the sea water evaporating pond, cooling wall between the sea water evaporating pond and the transparent heat insulating ceiling, fresh water collecting sumps in the joint between the evaporating pond and the ceiling and the joint between the evaporating pond and the cooling wall, fresh water outlet pipe connected to the fresh water collecting sumps, and reflecting plate in front of the cooling wall. The reflecting plate, the cooling wall and sea water inlet pipe constitute the condensator to condensate evaporated vapor fast to obtain pure fresh water in greatly lowered cost.

The invention relates to a process and a device for treating a landfill leachate by solar energy heating and evaporation. The process comprises the following steps that: a landfill leachate in a thermal heating tank is collected by utilizing a solar thermal collector, heated, evaporated and condensed in a condenser; and a condensate is reclaimed by a condensate recoverer and enters an active carbon adsorption posttreatment tank for carrying out posttreatment. The evaporation treatment device consists of the solar thermal collector, a hot water storage tank, a water replenishing pipe of the hot water storage tank, a circular coil tube type heat exchanger, a water replenishing tank, a leachate evaporation tank, a parallel calandria type heat exchanger, a condenser, the condensate recoverer, the active carbon adsorption posttreatment tank, an effluent water discharge pipe, etc. The process and the device for treating the landfill leachate by solar energy heating and evaporation use solar energy as main energy and have the advantages of low energy consumption and low operating cost.

The invention relates to a viscous oil wastewater pretreatment and evaporation desalting system and method. A two-stage chemical reaction settling pretreatment system is arranged before an evaporator to effectively remove silicon dioxide and hardness in viscous oil wastewater, a high-temperature scale inhibitor is matched to prevent the heat transfer surface of the evaporator from scaling, so that the evaporator can stably operate for a long time; and concentrated water discharged by the evaporator is naturally evaporated by an evaporation pond to implement zero wastewater discharge of the process system. An evaporation technique is adopted to fully utilize heat energy in the high-temperature viscous oil wastewater, so that the salt content and organic matter content in the condensation water generated by the falling film evaporator are obviously lowered; and the condensation water can be used as station boiler make-up water after being subjected to subsequent organic matter removal and deep desalting treatment. Besides, the two-stage chemical reaction is adopted to remove the silicon dioxide and hardness in the viscous oil wastewater, and the scale inhibitor is combined to prevent the heat transfer surface of the evaporator from scaling, so that the salt content in the condensation water of the evaporator is low, thereby achieving the goal of pre-desalting viscous oil wastewater.

The invention provides a zero-discharge treatment process for salt-containing waste water. The process comprises the following steps of: a, performing flash evaporation on salt-containing waste water, exchanging heat with a condensate from a flash tower heater for further heating, entering a degassing tower for removing dissolved oxygen and carbon dioxide, entering a salt solution storage groove for mixing with a circulating salt solution flowing out of the bottom of the flash tower, feeding into a flash tower through a flash tower feed pump, spraying through a salt solution distributor, exchanging heat with steam produced at the bottom of the flash tower, and partially vaporizing; b, recovering heat from a condensate discharged from the flash tower heater through a heat exchanger, returning an extremely small amount of the condensate into a steam ejector for serving as steam saturated water, and feeding the remaining condensate serving as recycled water to a production device for reutilizing; and c, recovering heat from the other part of a concentrated salt solution discharged from the bottom of the flash tower by performing flash evaporation through a flash tank, and feeding the concentrated salt solution into a centrifuge for performing separating treatment or feeding to an evaporation pond for naturally evaporating. According to the zero-discharge treatment process for salt-containing waste water, frequent cleaning of an entire system is avoided; and the process is simple, and has low operating cost.

The invention provides a method for reducing underground water pollution of an in-situ uranium leaching ore-bearing and water-bearing stratum. Ore-bearing and water-bearing stratum underground water is lifted to a ground surface water-gathering pond through a liquid pumping well; the ore-bearing and water-bearing stratum underground water in the water-gathering pond enters a reverse osmosis device; when the uranium concertation of concentrated water produced by the reverse osmosis device is greater than or equal to 6 mg / L, the concentrated water is discharged into a stock solution pond to serve as a reused stock solution and enters a water treatment workshop to extract uranium, the waste solution after uranium extraction enters a solution preparation pond and then returns to the ore-bearing and water-bearing stratum through an injection well. When the uranium concertation is smaller than 6 mg / L, the concentrated water is discharged into an evaporation pond to serve as abandoned water. Fresh water produced by the reverse osmosis device enters the solution preparation pond and returns back to the ore-bearing and water-bearing stratum again through the injection well. The caused problem of the underground water pollution of the ore-bearing and water-bearing stratum in the in-situ uranium leaching process can be solved, comprehensive ore recovery is achieved, wastewater treatment cost is reduced, and the purposes of improving the quality and improving the effect are achieved.

The invention discloses a full-automatic traditional Chinese medicinal material ingredient extracting device which comprises an extracting tank, a sedimentation column, an evaporation pond, a condensation tank and a solvent tank, wherein an ultrasonic microwave generator is arranged on the side wall of the extracting tank; the part on the side wall of the extracting tank for microwave to pass through is glass fiber reinforced plastics; the top of the extracting tank is communicated with the bottom of the sedimentation column; the top of the sedimentation column is communicated with the evaporation pond through an extracting solution delivery pipeline; the evaporation pond is communicated with one end of a condenser pipe in the condensation tank through a front end tube of the condenser pipe; the other end of the condenser pipe is communicated with the solvent tank; and the bottom of the solvent tank is communicated with the bottom of the extracting tank through a solvent delivery pipe. The full-automatic traditional Chinese medicinal material ingredient extracting device provided by the invention is simple in structure, simple and convenient to operate, integral and automatic in extraction, separation and concentration and is capable of being used for direct extraction of fresh medicinal materials and saving energy due to the fact that extracted medicinal materials do not need to be finely smashed; and zero damage is realized in the solvent, no pollution is discharged, the cost is saved, and the environment is protected.

A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste streams. In the process sodium bicarbonate-bearing streams are decarbonized to reduce the sodium bicarbonate concentration in a combination with other sodium-bearing streams, resulting in a liquor suitable as feed to a sodium carbonate decahydrate or sodium carbonate monohydrate process. The sodium bicarbonate stream is combined in a mix tank with other sodium carbonate bearing streams where the concentration is adjusted to form a liquor suitable to feed a sodium decahydrate or sodium carbonate monohydrate evaporation / crystallization step. In the process the combination of the various sodium-bearing streams is decarbonized to below 3.5% sodium bicarbonate when fed to a sodium decahydrate process and to below 1% sodium bicarbonate when fed to a sodium carbonate monohydrate process. The feed streams are adjusted in sodium carbonate concentration by higher concentrated sodium carbonate-bearing streams or by addition of sodium carbonate decahydrate produced from said streams or recovered form evaporation pond deposits, are then processed to produce sodium carbonate decahydrate or sodium carbonate monohydrate or further processed to form other sodium carbonate salts.

The invention provides a method for recycling a waste soft magnetic ferrite magnetic core. The method comprises the following steps of: flushing a waste to a preset conveying channel; conveying the waste to a sedimentation basin by using the conveying channel; extracting waste slurry into an evaporation pond by using an extracting device so as to evaporate moisture in the sun; and preparing the waste slurry into powder by performing powder making processes such as strip rolling, ball milling, pre-burning, spray granulation and the like. The aims of saving energy sources and reducing environmental pollution are fulfilled, the waste can be recycled and the manufacturing cost of a product is lowered.

The invention discloses a water evaporating device which comprises an evaporating pond, wherein the evaporating pond is provided with a water inlet; the black bottom of the evaporating pond is provided with one or more dams and divided into a plurality of blocks, and each block is provided with a rain water outlet and a concentrated solution outlet, wherein the rain water outlet is used for shunting the rain water, and the concentrated solution outlet is used for collecting evaporating remains. The dam is provided with a water distribution channel port, and the bottom of the evaporating pond is paved with electric heating or after heat pipelines. The water evaporating device can respectively adopt light energy, electric energy and after heat energy and can also use the light energy, the electric energy and the after heat energy in groups or in the same group. The water evaporating device can shunt the rain water, reduce the evaporation amount, control the depth of the evaporating water, improve the efficiency of evaporation and distillation and facilitate the clearing of the remains of the evaporation and distillation. The water evaporating device has simple structure and lower manufacturing and operation cost and can be used singly and in a combined mode.

The invention discloses a rainwater evaporator. The rainwater evaporator comprises a water inlet pipe, a water outlet pipe and a rainwater evaporation tank the upper end of which is open, as well as an evaporation collection part covering on the rainwater evaporation pond, wherein the evaporation collection part comprises a condensing cover and a collecting pond, and the water outlet pipe is connected with the collecting pond; the rainwater evaporation pond is connected with a waste water drain pipe with a valve, the rainwater evaporation pond is supported through a supporting frame, and the bottom of the rainwater evaporation pond is provided with a heating part. Compared with the prior art, the rainwater evaporator provided by the invention can change rainwater into water which can be directly drunk through evaporation, condensation and collection, and a problem that the drinking water in a dry region is scarce is solved; meanwhile, the heating part arranged at the bottom of the evaporation pond can repair illumination deficiency, and accelerates the evaporation speed of the rainwater; the waste water drain pipe connected to the rainwater evaporation pond is convenient for cleaning of precipitate, so the rainwater evaporator is economic, convenient and practical.

In some embodiments, a method may include reducing the microbial load in contaminated water of water recycle loops. These water recycling loops may include pulp and paper mills, cooling towers and water loops, evaporation ponds, feedstock processing systems and / or non-potable water systems. The methods may include providing a peracetate oxidant solution. The peracetate solution may include peracetate anions and a peracid. In some embodiments, the peracetate solution may include a pH from about pH 10 to about pH 12. In some embodiments, the peracetate solution has a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, the peracetate solution has a molar ratio of peracetate to hydrogen peroxide of greater than about 16:1. The peracetate solution may provide bleaching, sanitizing and / or disinfection of contaminated water and surfaces. The peracetate oxidant solution may provide enhanced separation of microbes from contaminated water.

The invention provides an in-situ leaching uranium mine wastewater evaporating device and an in-situ leaching uranium mine wastewater evaporating method. In-situ leaching uranium mine wastewater in an evaporation pond is lifted into the evaporating device by using a submerged pump, and the wastewater temperature is controlled at 10-20 DEG C; in the evaporating device, the wastewater enters a liquid distributing pipe, is uniformly sprayed onto a base material through liquid distributing holes in the liquid distributing pipe and is evaporated; 20-30min later, the wastewater adsorbed onto the base material is completely evaporated, and next wastewater spraying is started; the wastewater coming out of the evaporating device reflows into the evaporation pond. The in-situ leaching uranium mine wastewater is uniformly distributed onto the base material through lifting of the submerged pump, and under the action of wind energy or solar energy, evaporation of the wastewater is accelerated, so that the evaporation efficiency is improved, the difficulty that the wastewater in the evaporation pond is difficult to treat and accumulate is overcome, and the economy and reasonability are relatively good.

Provided are a method and device for accelerating water evaporation. The method includes the following steps that S1, a material to be evaporated is added into an evaporation pool; S2, an evaporationpart is added into the evaporation pool and floats on the liquid surface of the material to be evaporated; S3, light is supplied to the interior of the evaporation pool, and light energy is absorbed by the evaporation part to be converted into heat energy for increasing the temperature of the material to be evaporated on the surface layer; directed airflow is provided for the position above the evaporation pool to increase the air flowing speed, wherein air flowing can generate waves inside the evaporation pool to increase the turnover speed of the evaporation part and expand the movement range of the evaporation part, the situation is avoided that salt precipitates on the surface of the evaporation part, and thus the service life of the evaporation part is prolonged. By adopting method and device for accelerating water evaporation, water evaporates rapidly, and the water evaporation efficiency is improved.

The invention discloses a device for preparing salt by evaporating seawater under the sun. The device comprises a horizontal evaporation pond and a horizontal crystallizing pond, wherein the horizontal height of the bottom surface of the evaporation pond is higher than that of the bottom surface of the crystallizing pond; a ditch is arranged between the evaporation pond and the crystallizing pond, and the evaporation pond and the crystallizing pond are communicated with each other by the ditch; a gate is arranged at the communicating part of the ditch between the evaporation pond and the crystallizing pond; the device for preparing the salt by evaporating the seawater under the sun further comprises a circulating pump; an inlet of the circulating pump is communicated with the ditch, and an outlet of the circulating pump is commutated with the evaporation pond; the bottoms of the evaporation pond and the crystallizing pond are respectively provided with an impermeable layer; the impermeable layer comprises a sand layer and a thin film layer; the sand layer is arranged at the upper part of the thin film layer. The device not only effectively prevents the seawater from leaking towards the underground, but also is beneficial to the evaporation of the water, thus greatly improving the yield of a salt pan; the single yield of the salt pan is increased by about 2 tons per mu.

The invention discloses a method for treating road surface runoff contamination, which comprises the following steps of: throwing at least two layers of granular vermiculite with a grain diameter of between 15 and 40mm into side ditches or evaporation ponds or infiltration ponds on two sides of the road to carry out the adsorption type purification and contamination drainage treatment to the contaminants such as suspended matters, ammonia nitrogen and heavy metal ions which gather in the road surface runoff and settle into the side ditches or evaporation ponds or infiltration ponds so as to remove the road surface runoff contamination. The absorption and purification effects of the vermiculite layers used for absorbing and purifying the rainwater in the road surface runoff are obviously better than those of other absorbents such as active carbon. The on-site test result shows that the method has a good effect and is simple in construction method, low in vermiculite cost and wide in application range.

The invention relates to a harmless treatment method of drilling mud produced by in-situ leaching uranium exploration. According to the method, radioactivity monitoring is carried out in a mud drilling process. The harmless treatment method comprises the steps of pumping non-ore-bearing strata mud into a mud pit by using a mud pump, and adding a flocculating agent into the mud pit at the same time; carrying out solid-liquid layering on the mud, and then gradually discharging supernatant liquor into a sewage purifying pond; adding a purifying agent into the sewage purifying pond for carrying out purification treatment. The harmless treatment method also can be implemented by the following steps: dividing ore-bearing strata mud into coarse sand mud and fine sand mud by means of filtering pretreatment; removing the sand of the coarse sand mud by a vibration desander, and then dividing the mud without the sand into solid phase mud and liquid phase mud; adding the flocculating agent into the fine sand mud for carrying out solid-liquid separation to separate the find sand mud into solid phase mud and liquid phase mud; carrying out plate-frame pressure filtration on the solid phase mud and then sending the mud into an evaporation pond; adding the purifying agent into the liquid phase mud and then preparing into mud for recycling. The harmless treatment method is used for recycling the mud by means of solid-liquid separation, purification and the like, and is capable of respectively and reasonably treating the radioactive mud and non-radioactive mud at the same time, thus having better economy and rationality.

The present invention relates to a method and equipment for evaporation crystallization of high concentration salt water, wherein waste heat of a low temperature material is collected by using a low temperature heat recovery apparatus to prepare low temperature hot water with a temperature of less than 95 DEG C, the low temperature hot water is used to heat concentrated salt water and air, the heated and pressurized concentrated salt water and the heated and pressurized air enter the evaporator of an evaporation crystallization apparatus, the high concentration salt water is atomized into the micro particle size liquid droplets through an atomization spraying nozzle, the micro particle size liquid droplets and the hot air are mixed, the micro particle size liquid droplets are evaporated so as to form salt micro-particles, the salt micro-particles are separated through a dust removing device, and are discharged and collected through a rotary valve, and the filtered clean air is discharged into the atmosphere through an exhaust fan. The method and the equipment of the present invention have the following advantages that: the occupation area of the present invention is much smaller than the occupation area of the evaporation pond, the environmental pollution risk is low; the equipment operates at a room temperature under a normal pressure, such that the risk during the operating process is substantially reduced; the equipment can adopt the non-metallic corrosion-resistant material, such that the operating time is long, and the maintenance cost is low; the construction cost is low, and the maintenance is easy; and the enterprise waste heat is utilized as the evaporation heat source, such that the whole energy consumption is low.

The invention discloses a mechanical evaporator. The mechanical evaporator is characterized by comprising a shell, a top cover, a power device, an impeller device and a water inlet device, wherein the power device comprises a transmission shaft; an opening is formed in the top cover; the top cover is fixed on the shell; the impeller device comprises a hub and a plurality of blades which are fixed on the hub; the power device penetrates through the opening of the top cover through the transmission shaft and is connected with the hub to drive the blades to rotate; the water inlet device comprises a water inlet pipe; the water inlet pipe comprises a water inlet and a water outlet; the water outlet is formed below the blades. According to the mechanical evaporator, the evaporation process can be quickly accelerated. Compared with the efficiency of an evaporation pond, the efficiency of the mechanical evaporator is improved by 10-16 times. The evaporator is relatively compact, reliable and effective, and can be transported to different places; moreover, compared with conventional waste water treatment technologies such as distillation and dialysis, the mechanical evaporator has the advantage that the cost is greatly reduced.

The invention belongs to a low-cost high-efficiency multiple-effect coupled atomization evaporator which consists of a tower drum, an atomizing device, a waste liquor pool, a crystalline particle collection device, a crystalline particle collection bin, a thermo-fluid inlet pipeline and an evaporation fluid outlet pipeline, wherein the lower bottom of the tower drum is provided with an air inlet regulation device; the atomizing device is positioned inside the tower drum; the waste liquor pool is positioned below the tower drum; the crystalline particle collection device is used for collecting the atomized and evaporated crystalline particles; the crystalline particle collection bin is adjacent to the waste liquid pool; and the thermo-fluid inlet pipeline and the evaporation fluid outlet pipeline are used for accelerated evaporation. According to the device, the functions of atomization, evaporation, crystallization and collection of crystalline particles are integrated into a whole, the multiple evaporation effects of evaporating and atomizing the fluid together by using wind power and thermo-fluid are combined, the time needed by natural wind evaporation is effectively shortened, and the wind and thermal evaporation effects can be freely regulated, so that the atomization evaporator can safely and efficiently operate all the year round, and huge floor space of the waste liquor pool or a natural evaporation pond is greatly reduced. According to the equipment, the natural wind power and various waste heat fluid can be used for auxiliary evaporation, any intermediate dosing treatment process is not needed, the investment is saved, and the operating cost is low.

The invention provides a seawater desalination device for a ship, and belongs to the technical field of seawater desalination. The seawater desalination device for the ship comprises a seawater evaporation pond and a fresh water storage tank, wherein the top of the seawater evaporation pond is covered with a transparent top cover, a steam rising space is formed between the transparent top cover and the seawater evaporation pond, a condensate collection channel is arranged on the peripheral edge of the steam rising space, obliquely gets close to the bottom center of the seawater evaporation pond, and is finally converged to a vertical condensate header pipe, and the lower end of the condensate header pipe is connected with the fresh water storage tank; a seawater rising channel is arranged in the center of the condensate header pipe, the top of the seawater rising channel is connected with a seawater diffusion channel, the seawater diffusion channel is arranged between the bottom wall of the outer side of the seawater evaporation pond and the condensate collection channel, and an opening in the upper part of the seawater diffusion channel is communicated with the seawater evaporation pond. The seawater desalination device for the ship is simple and exquisite in structure and convenient to carry, and an effective seawater desalination function can be realized.

The invention provides a method for recycling well flushing waste water in in-situ leaching uranium exploration. The method comprises the steps that (a), well flushing waste water of a liquid pumping well and a liquid injection well for in-situ leaching uranium exploration is elevated to the ground surface and then settles through a settling basin, and underflow slurry of the settling basin is drained into an evaporation pond; (b) clean liquid 1 is fed into a hydrocyclone, clean liquid 2 discharged out from the hydrocyclone enters the step (c), and a sand-containing solution discharged out from the hydrocyclone returns to the settling basin for closed cycle treatment; (c) the clean liquid 2 enters a self-cleaning filter, clean liquid 3 is obtained through filtering and enters the step (d), and waste liquid generated by automatic reverse flushing enters the hydrocyclone for closed cycle treatment; (d) the clean liquid 3 enters a bag filter, and clean liquid 4 obtained through filtering enters a buffer pool; and (e) the clean liquid 4 in the buffer pool enters the liquid injection well through high-pressure injection. By means of the method, zero emission of waste water is realized, and the problems that due to outwards drainage of well flushing waste water, an evaporation pond occupies the land, environmental issues are caused and uranium recovery is difficult are solved.

The invention belongs to the technical field of cultivated land resource protection, and discloses a negative pressure concealed pipe drainage system and method for soil salinity leaching. The concealed pipe drainage system for saline-alkali soil salinity leaching is provided with a negative pressure drainage device; a negative pressure concealed pipe drainage device is connected with a water suction pipe through a connecting pipe, and the water suction pipe is buried in saline-alkali soil. The negative pressure concealed pipe drainage device is connected with a saline water storage evaporation pond through a water conveying pipe and connected with a negative pressure control switch, the negative pressure control switch is connected with a negative pressure meter, and the negative pressure meter is fixed to a cultivated land surface. The negative pressure concealed pipe drainage device is provided with an air pump, a motor and the connecting pipe, and the motor is connected with a solar wind power generator. According to the negative pressure concealed pipe drainage system and method for soil salinity leaching, the negative pressure concealed pipe drainage system is mainly composed of a concealed pipe drainage pipeline and a negative pressure air and water extraction system, wherein the concealed pipe drainage pipeline is buried in a certain depth of cultivated land soil and has certain water permeability. If the negative pressure concealed pipe drainage system is widely used in an agricultural planting area of the extremely water-deficient saline-alkali soil, the system method with the great outcome can be used for obviously improving the leaching efficiency of soil salt.

The invention relates to a uniform-heat pipe plate phase-change micro refrigerator which comprises an evaporator, a condenser, a cooling water pipe, a glass plate and an outer frame. The evaporator ismanufactured by a silicon surface with a micrometer square pyramid structure and a nanometer hemisphere; the condenser is formed by 12 condensation plates with micrometer V-shaped grooves and cylindrical nanometer structures; and the lower surface of each condensation plate is bonded with the glass plate. An evaporation pond is located on the front surface of the evaporator, and uniformly distributed micrometer square pyramid structures and nanometer hemisphere structures are arranged on the bottom surface of the evaporation pond, so that a double-layer heterogeneous micro-nano secondary structure is formed; the micrometer V-shaped grooves and the nanometer cylindrical double-layer structures are arranged on a condensation surface, the micrometer V-shaped grooves are uniformly distributedon the condensation surface; and the cylindrical nanometer structures are distributed on the surface of the V-shaped grooves at variable spaces, so that a gradient invasive super-hydrophobic liquid drop self-drive surface is formed; and the glass plate and the back surfaces of the condensation plates form the cooling water pipe, and liquid in the evaporation pond and the cooling water pipe are isolated. The invention further comprises a uniform-heat pipe plate phase-change micro refrigerator manufacturing method.

The invention relates to a device and method for accelerating evaporation of an acid in-situ leaching uranium mining evaporation pond waste liquid. The device comprises a sulfuric acid dilution heat exchanger, wherein the sulfuric acid dilution heat exchanger is divided into a mixing chamber and a heat exchange chamber; a water inlet of the mixing chamber is connected with a tail liquid pipe usedfor receiving and adsorbing a tail liquid through a pipeline; an acid inlet of the mixing chamber is connected with an acid storage tank used for receiving concentrated sulfuric acid through a pipeline; a liquid outlet of the mixing chamber is connected with a fluid preparation pond through a pipeline. The device and method for accelerating the evaporation of the acid in-situ leaching uranium mining evaporation pond waste liquid have the advantages that the temperature of the wastewater in an evaporation pond before heating is 0-20 DEG C, and the temperature of the wastewater in the evaporation pond after heating is 30-90 DEG C; the evaporation of the wastewater after heating is accelerated; compared with natural evaporation alone, the area of the evaporation pond can be reduced to 20-90%,thereby not only reducing the floor space of the evaporation pond, but also greatly saving the construction cost of the evaporation pond.

A method for increasing the evaporation rate of an evaporative pond containing pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0° C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at an operating temperature of at least 10° C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.

The invention belongs to the technical field of coalbed gas production, and discloses an automatic measurement method and system capable of being used for low water yield of a coalbed gas well. The automatic measurement system includes a sensor control system, a data processing system and a main water way system. In the main water way system, a water outlet of the coalbed gas well is connected with an inlet of a water tank through a water inlet pipeline, an outlet of the water tank is connected with an evaporation tank through a water outlet pipeline, the water outlet pipeline is provided witha drainage pump, a valve and a water meter in sequence; three water level probes are arranged in the water tank, and one of the water level probes is higher than the other two water level probes; thesignal output ends of the three water level probes are connected with the sensor control system; the output end of the sensor control system is connected with the drainage pump for controlling the operation of the drainage pump and further sending a time signal of starting the drainage pump to the data processing system; and the data processing system is used for recording the drainage signal andcalculating the water yield. According to the automatic measurement method and system, the water yield of the coalbed gas well with small water yield can be effectively measured, and the automatic measurement method and system can be widely used in the field of coalbed gas production.

The invention discloses a sludge drying and incineration system. The system comprises a sludge tank, a drying system, an incineration system, a water regeneration system and a heat recovery system, wherein the drying system comprises an evaporation tank, a centrifugal dryer and a heat source dryer; the incineration system comprises a sludge intermediate bin, an incinerator and a screening slag extractor; the heat recovery system comprises a heat conduction oil storage tank, a heat exchanger, a condenser and a heat conduction oil circulation pipeline. The water regeneration system sequentiallycomprises a filter tank, a sedimentation tank, a ring filter, a purification tank and a water storage tank. The sludge drying and incineration device is used for drying and incinerating sludge; an intermediate product can be recycled; the drying process is carried out by a plurality of devices in sequence, the drying efficiency is high, and the effect is good; a heat source in the drying process utilizing the heat source is obtained by recycling waste heat so that the drying energy consumption and cost are greatly reduced; produced wastewater is regenerated through a water regeneration system,so that the water resource is saved; furnace slag is recycled and screened, recycling is facilitated, and in conclusion, the sludge drying and incineration system has the advantages of being capableof saving energy, environmentally friendly and capable of achieving waste utilization.

The invention relates to the technical field of wastewater odor pollutant control, and specifically discloses an odor pollutant control method for an evaporation pond of an in-situ leaching uranium mine. The method comprises the following steps: (1) adding a mixed solution of dodecyl dimethyl benzyl ammonium chloride and sodium dichloroisocyanurate into the evaporation pond to kill bacteria and green plankton in the solution; (2) adding a sodium hydroxide solution into the evaporation pond to adjust the pH value of the wastewater in the evaporation pond; and (3) adding a flocculant into the evaporation pond to make suspended solids in the evaporation pond quickly settle and make the solution be clear and transparent. The method realizes the green and harmony of the evaporation pond ecological environment, and has relatively high social value, environmental protection value and ecological value.