71results about How to "High degree of self-control" patented technology

The invention relates to a printing and dyeing wastewater treatment system, and belongs to the technical field of printing and dyeing wastewater treatment. The system consists of nine parts, namely an adjusting tank 1, a lift pump 2, a coagulating system 3, a primary sedimentation tank 4, a contact oxidation sediment system 5, a sand filtering tank 6, an active carbon adsorbing tank 7, a sludge pump 8 and a sludge concentrating tank 9. The printing and dyeing wastewater treatment system adopts the combined process of coagulation, contact oxidation, sand filtration and active carbon adsorption, and adds the deep treatment processes of the sand filtration and the active carbon adsorption after the physical-chemical treatment coagulation process and the biochemical treatment contact oxidation process. The printing and dyeing wastewater treatment system can be designed and manufactured respectively according to the wastewater quantities of printing and dyeing enterprises, and has the advantages of good treatment effect of printing and dyeing wastewater, stable operation, high degree of automation, simple operation, convenient maintenance, good and stable outlet water quality, superior level to the national emission primary standard and the like. The system particularly has good treatment effect of the printing and dyeing wastewater with high density and high chromaticity.

The invention discloses a method for generating power and making ice by the aid of pressure energy of natural gas of a pipe network and a device. The method includes steps of (1), throttling the high-pressure natural gas by a throttling valve and expanding the high-pressure natural gas by an expansion machine to generate electric power; (2), realizing heat exchange between the expanded natural gas and refrigerant in a first heat exchanger 4, further realizing heat exchange between the natural gas and refrigerant of a second heat exchanger 5, leading the temperature of the natural gas to rise to a range from 2 DEG C to 10 DEG C after heat exchange processes, and delivering the natural gas into the urban gas pipe network; and (3), delivering one channel of the refrigerant in the second heatexchanger 5 into a refrigerant channel of the first heat exchanger after the heat exchange process, compressing another channel of the refrigerant by a compressor, cooling the other channel of the refrigerant by circulating cooling water, throttling and expanding the other channel of the refrigerant, and then delivering the other channel of the refrigerant and the refrigerant in the first heat exchanger after the heat exchange process together to an ice maker 11 to make ice. The method and the device have the advantages that fuel for heating low-temperature natural gas after pressure of the low-temperature natural gas is regulated is saved, operating cost of a natural gas pressure regulating station is greatly lowered, the electric power is obtained, and simultaneously, a large quantity of industrial or edible ice can be produced.

The invention provides a novel vertical flexible covering film anaerobic fermentation device, comprising an anaerobic fermentation reactor and a flexible covering film fixed to the anaerobic fermentation reactor, wherein the anaerobic fermentation reactor is provided with, from bottom to top, a methane stirring device, a multipoint self-rotating water distributing device and a four-phase separator. The device is a novel vertical flexible covering film anaerobic fermentation device having the characteristics of: being low constant pressure and anaerobic, high-efficiency production of methane, long sludge age, low energy consumption and convenient operation and maintenance.

The invention discloses a waste diatomite processing system and a waste diatomite processing technique. The waste diatomite processing system comprises a diatomite temporary storage device and dewatering equipment, wherein a feeding pump is arranged on a pipeline system between the diatomite temporary storage device and the dewatering equipment, a discharge hole and a liquid outlet are formed on the dewatering equipment, the liquid outlet is connected with a sewage pipe network, the discharge hole of the dewatering equipment is connected with drying equipment by a belt conveyer, a wet gas outlet of the drying equipment is connected with a dust collection device, the discharge hole of the drying equipment is connected with packaging equipment by a screw conveyer, and the packaging equipment is provided with a finished product conveying device. The waste diatomite processing technique sequentially comprises the steps of conveying, storing temporarily, dewatering, drying, packaging and the like. According to the waste diatomite processing system and the waste diatomite processing technique, the investment is low, the energy consumption is low, the effect is rapid, the pollution problem of waste diatomite is solved and waste reutilization can be realized.

The invention discloses a method for generating power and making ice by the aid of pressure energy of natural gas of a pipe network and a device. The method includes steps of (1), throttling the high-pressure natural gas by a throttling valve and expanding the high-pressure natural gas by an expansion machine to generate electric power; (2), realizing heat exchange between the expanded natural gas and refrigerant in a first heat exchanger 4, further realizing heat exchange between the natural gas and refrigerant of a second heat exchanger 5, leading the temperature of the natural gas to rise to a range from 2 DEG C to 10 DEG C after heat exchange processes, and delivering the natural gas into the urban gas pipe network; and (3), delivering one channel of the refrigerant in the second heat exchanger 5 into a refrigerant channel of the first heat exchanger after the heat exchange process, compressing another channel of the refrigerant by a compressor, cooling the other channel of the refrigerant by circulating cooling water, throttling and expanding the other channel of the refrigerant, and then delivering the other channel of the refrigerant and the refrigerant in the first heat exchanger after the heat exchange process together to an ice maker 11 to make ice. The method and the device have the advantages that fuel for heating low-temperature natural gas after pressure of the low-temperature natural gas is regulated is saved, operating cost of a natural gas pressure regulating station is greatly lowered, the electric power is obtained, and simultaneously, a large quantity of industrial or edible ice can be produced.

The invention relates to an organic waste gas catalytic combustion device. The organic waste gas catalytic combustion device comprises a waste gas inlet, a purified gas outlet, a catalytic purification device, a hot start wind circulation pipe and an electrical control device, wherein the waste gas inlet is used for inputting the waste gas; the purified gas outlet is used for outputting the purified gas; the catalytic purification device is used for performing catalytic combustion on the waste gas; the waste gas inlet is communicated with the catalytic purification device through a first pipeline; the purified gas outlet is communicated with the catalytic purification device through a second pipeline; the two ends of the hot start wind circulation pipe are communicated with the first pipeline and the second pipeline respectively; the second pipeline is connected with a fan; and the first pipeline, the catalytic purification device, the second pipeline, the hot start wind circulation pipe and the fan form a circulation path. The organic waste gas catalytic combustion device has the advantages of high self-control degree, available waste heat, stable performance, safety, reliability, small volume, light weight, simpleness and convenience in operation, good purifying effect and the like.

The present invention discloses a recycling treatment method and a device of hyperfiltration backwashing water. The treatment method includes the following steps: a, the membrane backwashing water firstly enters a recycling regulating reservoir; b, the backwashing water discharged in the recycling regulating reservoir is added with 15 to 30 mg / L of coagulant FeCl3 calculated by FeCl3, and then waste water enters a pipeline mixer to mix; c, the yielding water of the pipeline mixer enters a membrane tank of an immersion membrane device after being added with 10 to 30 mg / L of power active carbon; d, the water entering the membrane tank is absorbed by filter pump and the hyperfiltration backwashing water recycling yielding water is acquired by the hydrostatic pressure and the absorbing subpressure of an inner chamber of the membrane permeating the membrane. The recycling method and device of the present invention have the advantages of high recycling efficiency, good water yielding quality, high self control degree and continuous operation of long time and low cost, etc . The quality of the water yielded meets the standard requirements of national drinking water. The present invention has reduced the discharge amount of wastewater.

The invention discloses a water-saving ultra / microfiltration purification device for water. The water-saving ultra / microfiltration purification device for water comprises a water-feeding pump 1, ultra / microfiltration membrane purification units 2, an ultra / microfiltration membrane concentrated water and backwashing water recovery tank 3, a clean water reservoir 7, an aeration blower fan 8, a water suction pump 9 and associated pipe valves. The water-saving ultra / microfiltration purification device for water is characterized in that activated carbon particles 4, an aeration device 5 and flat membrane members 6 are arranged in the ultra / microfiltration membrane concentrated water and backwashing water recovery tank 3; the aeration device 5 is located at the bottom of the ultra / microfiltration membrane concentrated water and backwashing water recovery tank 3; and the flat membrane members 6 are located in the ultra / microfiltration membrane concentrated water and backwashing water recovery tank and on the aeration device 5. The water-saving ultra / microfiltration purification device for water can realized purification of water and recovery of concentrated water and backwashing water simultaneously. Product water obtained by the water-saving ultra / microfiltration purification device for water has quality reaching the national drinking water quality standard. Through the water-saving ultra / microfiltration purification device for water, membrane backwashing water and concentrated water can be recycled so that a water recovery rate of a membrane system is greatly improved; a waste water discharge amount is reduced; and a large amount of a water resource is saved. The water-saving ultra / microfiltration purification device for water can be widely utilized for purification of drinking water.

The invention relates to a valve rubber compensating type one-way valve, which is provided with a valve rubber extrusion device. When valve rubber is worn or damaged due to other reasons, a section of valve rubber is extruded by the valve rubber extrusion device according to the given amount, and the damaged part is compensated to ensure that the one-way valve normally works. Distance measuring devices are correspondingly arranged on a valve cone and a valve cover. Due to the distance measuring devices, the distance change of the valve cone relative to the valve cover can be observed at any time so as to reflect the wear condition of the valve rubber. The valve cone and the valve cover are prevented from colliding, the service life of the valve cone and a valve seat is effectively prolonged, and the frequency of closing down to replace spare parts is reduced.

The invention discloses a treatment device for tail gas containing styrene and other substances in reaction for producing orthophthalic type entanglement resin. The treatment device is mainly a tail gas exhaust measure adopted for meeting the environmental protection requirement in a chemical production process. The device comprises a tail gas collection master pipe, a vacuum tank, a vacuum pump, a water-vapor separator, an active carbon filter and an automatic control system. The orthophthalic type entanglement resin tail gas purification device effectively guarantees automatic control of tail gas treatment. The efficiency of purifying the tail gas is increased, and the environmental protection requirement of the tail gas purification can be realized through remote control. The purification degree is high when the tail gas is sucked by using negative pressure vacuum for treatment. One tail gas exhaust collection pipe is shared by a plurality of reaction kettles, so that the operation cost is low. The tail gas exhaust valve of each reaction kettle is independent and is controlled by a DCS (Distributed Control System). Negative pressure adsorptive filtration is adopted by the purification device, active carbon is used as an adsorbing material, and the adsorption rate to the styrene is over 90 percent. The disassembly and the assembly are facilitated, desorption can be performed under the action of 100 DEG C or under a vacuum condition after saturation, and the cyclic utilization rate is high.

The invention belongs to the technical field of sewage treatment, relates to a system and method for concentrated resin water treatment, and in particular relates to a system and method for treatmenton a targeting nitrogen and phosphorus removal resin regeneration waste liquid. The system for treatment on the targeting nitrogen and phosphorus removal resin regeneration waste liquid comprises a resin adsorption tank, a waste liquid tank, a denitrification tank, a sedimentation tank, a high-density sedimentation tank, a sludge tank and a dehydration system. By adopting the system for treatmenton the targeting nitrogen and phosphorus removal resin regeneration waste liquid, nitrogen and phosphorus are firstly effectively enriched, a regeneration waste liquid is treated in combined biochemical and physicochemical treatment modes, and the system has the beneficial effects of being stable in operation effect, high in nitrogen and phosphorus removal efficiency, rapid in reaction speed, highin produced water quality, high in self control degree, small in floor space, capable of effectively solving the problem of secondary pollution of a resin regeneration waste liquid, and the like.

The invention discloses a kiln and method for converting chemical engineering hazardous waste sodium chloride into refined industrial salt. The kiln comprises a kiln body and two independent dioxin removing chambers. The two dioxin removing chambers each communicate with a melting tank of the kiln body through a small furnace. Each small furnace is provided with a first flame projector. A second flame projector is arranged on the side wall of each dioxin removing chamber. Each dioxin removing chamber communicates with a main flue through a smoke discharging pipe. The two smoke discharging pipes are each internally provided with a flue gate. Two combustion supporting devices supply combustion supporting air into the corresponding dioxin removing chambers alternately. After being preheated through the dioxin removing chambers, the combustion supporting air enters the melting tank through the small furnaces. The melting tank is designed to resist to seepage, and by means of the melting tank, a byproduct, namely the sodium chloride, can be converted into the refined industrial salt; the purpose that hazardous waste is treated in a factory is achieved; high-temperature flue gas generated by the melting tank enters the dioxin removing chambers through the small furnaces, and the temperature is raised to 1200 DEG C or above, so that dioxin is removed; and secondary pollution is not caused.

The invention discloses a system for treating waste gas generated by an automotive internal decorative board, comprising a shock hydraulic jump dust remover, a cyclone water film dust remover, a chemical absorption system, an absorption tank, an induced draught system, a high-altitude discharge system and a remained water purifying system. The method is a combined treatment technology of physics and chemistry and has the following advantages: two-stage dust removal consisting of the shock hydraulic jump dust remover and the cyclone water film dust remover effectively removes particle pollutants from waste gas generated by the automotive internal decorative board, simultaneously can reduce the temperature of the waste gas and reduce the influence on the purification effect of follow-up systems; the chemical absorption system is adopted, and copper sulfate absorption liquid with the mass concentration of 10 percent is used for absorbing compounds of phenols and aldehydes in the waste gas and part of volatile organic pollutants, thus reducing the load of volatile organic pollutants and prolonging regeneration period of absorbing material in the absorption tank; and the absorption tank adopts graded coke as the absorbing material, thus being capable of improving the efficiency of removing the volatile organic pollutants, having low price and being capable of effectively reducing the operation cost.

The invention relates to the technical field of oil field evaluation test devices, and concretely relates to a device an a method for evaluating the dynamic scaling and scale inhibition of anan oil field. The oil field dynamic scaling and scale inhibition evaluation device is formed by a deoxidizing device, a liquid conveying unit, a mixing mechanism, an information detecting and recording unit, a rock core displacement dynamic evaluation system, a capillary pipeline dynamic evaluation pipeline and a constant temperature box. According to the evaluation method of the oil field dynamic scaling and scale inhibition evaluation device, under the condition that the field temperature, pressure, flow velocity and different flow state working conditions are simulated in a manner of being most close to the actual conditions of an injecting water reservoir, the scaling induction period time is quickly judged through the change of pressure difference and permeability, and a technical basis is provided for a field water injection scheme; and meanwhile, an effective scale inhibitor and an optimal use concentration are screened out for on-site scale inhibitor quality monitoring, an evaluation means is provided for novel scale inhibitor research and development and mechanism research, and the device is easy to operate, high in automatic control degree and convenient to maintain.

The invention relates to the field of flue gas treatment and in particular to a roasting flue gas defluorination, dust collection, asphalt fume removal, desulfuration and denitration integral treatment method and system. According to the method, roasting flue gas pollutants are thoroughly treated through heat accumulating type incinerator+denitration+alkali dry method adsorption. The system has a structure as follows: a roasting furnace outlet flue is divided into two paths, one path comprises a filter, a heat accumulating type incinerator, a dust collector flue, a circulation fluidized bed reactor, a dust collector, a dust collection rear flue, a draft fan and a chimney which are arranged in sequence; the other path communicates with the lower part in the chimney through an accident flue I and an accident flue III; the accident flue I communicates with the dust collector flue through a pipeline; and the accident flue I communicate with the dust collection rear flue through an accident flue II. The method and system are mainly applied to newly constructed anode roasting flue gas treatment projects, conventional anode roasting flue gas updating and transformation projects and desulfuration treatment projects of boilers and other flue gases.

The invention relates to a zinc sulfate heptahydrate particle increase method. The method includes the steps of: (1) conducting acid dipping and impurity removal on a stock solution, then carrying out evaporation concentration under a negative pressure at 65DEG C in an evaporator, thus obtaining a concentrated sample solution with a Baume degree of 52-54Be; (2) placing the concentrated zinc sulfate solution in a stirring crystallizer and maintaining a constant temperature at 50-60DEG C, then performing slow cooling to 35-45DEG C, thus obtaining a small amount of fine crystals; (3) heating the mixed solution of step (2) to 50-60DEG C, and at the same time performing continuous stirring until the crystals are completely dissolved; (4) slowing cooling the solution obtained by step (3) to 37-48DEG C; and (5) adding 5-10g of a seed crystal into the solution of step (4), then slowly cooling the solution to 30-35DEG C for 6-8h, thus obtaining a lot of precipitated large particle zinc sulfate heptahydrate crystals. The method provided by the invention acquires large particle zinc sulfate heptahydrate, at the same time, the crystallization time is shortened, and the production efficiency is remarkably improved.

The invention discloses a method for recovering and treating ultrafiltration backwash water. The treatment method comprises the following steps: a. The membrane backwash water first enters a recovery adjustment tank; b. Dosing FeCl3 in the backwash water discharged from the recovery adjustment tank The coagulant FeCl3 is calculated as 15-30mg / L, and then the wastewater enters the pipeline mixer for mixing; c. The effluent of the pipeline mixer enters the membrane tank of the submerged membrane device after adding 10-30mg / L powdered activated carbon; d. The water entering the membrane tank is sucked by the filter pump, and the hydrostatic pressure and the suction negative pressure of the inner chamber of the membrane are used to pass through the membrane to obtain ultrafiltration backwash water and recover the effluent. The recovery method and device of the present invention have the advantages of high recovery efficiency, good effluent quality, high degree of self-control, long-term low-cost continuous operation, etc., and the effluent quality meets the requirements of the national drinking water quality standard, reducing the discharge of waste water.

The invention belongs to the technical field of transportation vehicle environmental protection devices, in particular to a muck car roof cover spraying system and a method thereof. The spraying system particularly comprises an automatic control awning cloth device and a spraying device, wherein the spraying device is installed on the automatic control awning cloth device, and the spraying devicesynchronously sprays mist to prevent flying dust along with the closed movement of the automatic control awning cloth device; and in addition, after the spraying system works, a mixed solid film is formed between the spraying system and a material and covers the surface of the material, and the flying dust prevention effect is remarkable. Meanwhile, the method has the characteristics of being highin automatic control degree, good in dustproof and environment-friendly effect, free of separate operation, time-saving and labor-saving. The spraying system has wide application in the aspects of environmental protection and air pollution reduction.

The invention discloses a flue gas purifying system, comprising a heat-cold exchange unit used for cooling flue gas, a flue gas purifying unit and a chemical adding unit used for adding auxiliary agents and reactants into the flue gas purifying unit, wherein the flue gas purifying unit is of a tower shape and comprises a reactor shell; a mixed liquid chamber, a gas chamber, a filtering and treating unit and a demister are arranged in the reactor shell from bottom to top; a gas outlet is formed in the top of the reactor shell; the side wall of the reactor shell is provided with an exhaust gas inlet communicated with the gas chamber, a mixed liquid outlet communicated with the mixed liquid chamber, a spraying liquid inlet communicated with the filtering and treating unit, a temperature controller and a liquid level controller; the exhaust gas inlet is connected with a fan through a pipeline; the fan is communicated with the heat-cold exchange unit through a pipeline; the mixed liquid outlet is provided with a valve; and the spraying liquid inlet is connected with the chemical adding unit through a pipeline and communicated with an external water supply pipeline.

The invention provides a multifunctional self-muscle-stretching and self-massage bodybuilding device which can be used for stretching the muscles and the tendons of the upper body and the legs and massaging the chest and the back and is convenient to use and operate. The multifunctional self-muscle-stretching and self-massage bodybuilding device comprises a machine base; a sitting stool is arranged at the rear portion of the machine base; an upward protruding body is arranged at the front portion of the machine base; a front stool board is arranged on the top of the upper protruding body; a lying board is pivoted to the rear edge of the top of the upward protruding body; the lying board is connected with a vertical swing mechanism; the two sides of the lying board are provided with telescopic rods; the outer ends of the telescopic rods are provided with cup head pins; a turning board is pivoted to the front edge of the top of the upward protruding body; the turning board is connected with a telescopic push rod A; the lower end of the telescopic push rod A is fixed to the machine base; the front of the turning board is provided with a leg muscle stretching board with the board body extending upward; the two sides of the rear portion of the machine base are each in pivot joint with a rotary support swinging in the horizontal direction; the upward-tipping outer ends of the rotary supports are provided with carrier boards; the machine base is provided with a rotary support drive device driving the rotary supports to rotate and swing. The multifunctional self-muscle-stretching and self-massage bodybuilding device is suitable for the muscle-stretching bodybuilding of the upper body and the legs.

The invention provides a device and a method for preparing nitrous oxide. The device comprises a reaction unit, a cooling and purification unit and a compression and liquefying unit which are connected sequentially; and the reaction unit comprises a reactor, a safe water sealing tank connected with the reactor as well as a temperature self-control system for controlling the internal temperature ofthe reactor. According to the device and the method for the preparing nitrous oxide, which are provided by the invention, a reaction system of the device is provided with the safe water sealing tankand the temperature self-control system, so that the safe reliability of production is effectively guaranteed; and the method has high self-control degree, the purity of products is guaranteed and theprocess flow is simple.

The invention discloses a full-automatic energy-saving and pressure-stabilizing device for directly supplementing water from a primary side to a secondary side in a heat exchange station. The full-automatic energy-saving and pressure-stabilizing device comprises a controller, a heat exchanger, a primary side heating network water return pipe and a secondary side heating network water return pipe, wherein a water charging pipe and a water supplementing pipe are arranged between the primary side heating network water return pipe and the secondary side heating network water return pipe, and are connected with the primary side heating network water return pipe through a water entering main pipe and connected with secondary side heating network water return pipe through a water discharging main pipe; a flow detector and a flange ball valve are arranged on the water discharging main pipe; the flow detector is connected with a flow transducer; two stages of turn-off electromagnetic valves are arranged on the water supplementing pipe; an electric adjustment valve or a variable-frequency water supplementing pump is arranged between the two stages of turn-off electromagnetic valves; the primary side heating network water return pipe is equipped with a first pressure transducer; and the secondary side heating network water return pipe is equipped with a second pressure transducer. According to the full-automatic energy-saving and pressure-stabilizing device for directly supplementing water from the primary side to the secondary side in the heat exchange station, a water treatment device and a water supplementing water tank in the conventional system are canceled, so that the equipment of a constant-pressure water supplementing system is greatly simplified; and the area occupied by a heating station is reduced, and the investment is saved.

The invention provides a facility using circulated water for aquaculture. The facility includes the following ponds or groove tanks which are successively connected: an aquatic pond, a nitrogen-reducing groove tank, a bacterial strain pond, and a dissolved oxygen groove tank. The aquatic pond is provided with a separation assembly and an air pipe. The separation assembly includes a fish and shrimp back-up ring and a solid-liquid separation apparatus. The bottom part of the nitrogen-reducing groove tank is provided with an ozone inlet. The bacterial strain pond is in connection to a bacterial strain adding pipeline, and a multi-fiber filter material and a porous filter material are floated in the pond. The dissolved oxygen groove tank is in connection to a venture ejector which has high oxygen concentration. The oxygen concentration input by the air pipe is around 3-9mg / L, and the dissolved oxygen concentration in the dissolved oxygen groove tank can reach 10-20mg / L. According to the invention, the facility can save large amount of water resource, increases survival rate of aquatic products, has high culture efficiency and explicit economic benefits.

The invention relates to regenerated cellulose fiber containing Binchotan and a preparation method of the regenerated cellulose fiber. The regenerated cellulose fiber containing the Binchotan, provided by the invention, is characterized in that Binchotan powder, regenerated celluloses and the like are adopted as raw materials, Binchotan dispersing liquid is formed by uniformly dispersing the Binchotan powder in water, a viscose spinning solution is prepared simultaneously, and a pre-spinning injection method is adopted to add the Binchotan dispersing liquid into the viscose spinning solution for spinning, thereby obtaining a finished product. The regenerated cellulose fiber containing Binchotan and the preparation method of the regenerated cellulose fiber provided by the invention have thebenefits: in the regenerated cellulose fiber containing the Binchotan, the adding amount of the Binchotan is 1.5-10 percent by weight of alpha-celluloses, the ammonia absorption rate is more than orequal to 50 percent, the air permeability is more than or equal to 600 mm / s, the washing resistance is realized, and the color fastness is grade 4-5. The regenerated cellulose fiber provided by the invention has an antibacterial rate of 95 percent, a remarkable antibacterial effect, a far infrared emissivity of 88.5 percent, a remarkable far infrared emission function, an ammonia adsorption rate of more than or equal to 50 percent and a remarkable deodorization function; a prepared textile product has the characteristics of being smooth, fine and good in hygroscopicity.

The invention discloses an integrated membrane technology treating method for electroplating nickel-containing wastewater. Specifically, the method comprises the following steps: (1) performing pH regulating reaction: adding alkaline into the electroplating nickel-containing wastewater and regulating the pH value of the electroplating nickel-containing wastewater to 4.5-5.5; (2) removing suspended solids, bacteria, viruses, colloids and macromolecules from the wastewater treated in the step (1), thereby keeping the turbidity of the wastewater below 1 and SDI below 5; (3) filtering by adopting a safety filter: pumping the wastewater treated in the step (2) into the safety filter and adding an anti-scaling agent into the wastewater; (4) filtering in a nano-filtration manner; (5) filtering by adopting the safety filter; and (6) filtering by using a reverse osmosis system. After the electroplating nickel-containing wastewater is treated according to the method disclosed by the invention, the produced water can reach the table 3 standard in Electroplating Pollutant Discharge Standard (GB 21900-2008); and meanwhile, the dosage of the drug can be reduced, the sludge quantity is reduced, and the secondary pollution is reduced.

The invention discloses a sludge film composite SBR water treatment process. Firstly, at a water entering stage, water enters from a region A of an SBR pond body, a stirring device is turned on while water enters, along with increasing of the amount of entered water, mixed liquid of water in the region A and raw sludge enters a region B through a water hole, an aerating device is turned on at the time, and a reflux device is turned on at the same time; then, at a reaction stage, water entering is stopped, the stirring device and the aerating device continue to be in a running state, the reflux device continues to run, and under the action of the reflux device, the mixed liquid in the region B flows back to the region A, and circulation is formed between the region A and the region B; precipitation is carried out, the stirring device, the aerating device and the reflux device are turned off, suspended filler, sludge and treated sewage are separated; water is drained, clean water obtained after treating is drained through a water decanter, and one running cycle is completed. Due to the fact that the SBR pond is partitioned, the sludge mixed liquid can circulate in the two regions under the action of the reflux device, and the process for treating sewage has the advantages that the volumetric loading is high and the water outlet effect is good.

The invention discloses a laboratory quenching tank. The laboratory quenching tank comprises a control cabinet and a quenching tank welded by a steel plate, wherein a water drainage pump is arranged in the quenching tank, a water drainage pipe is arranged in an outlet of the water drainage pump, a water inlet is formed in the side wall of the quenching tank, a water inlet pipe is arranged at the water inlet, an electromagnetic valve is arranged on the water inlet pipe, a water level upper limit detection probe and a water level lower limit detection probe are arranged on the side wall of the quenching tank, a temperature probe is arranged in the quenching tank, the water drainage pump is electrically connected with the control cabinet, the temperature probe, the water level upper limit detection probe and the water level lower limit detection probe are in signal connection with the control cabinet, and the water drainage pump, the temperature probe, the water level upper limit detection probe, the water level lower limit detection probe (11) and the electromagnetic valve form a temperature and water level automatic control loop. Compared with the prior art, a quenching liquid valveis automatically opened to add an external storage medium to regulate the temperature in the preferential scheme, and the quenching uniformity of a workpiece is guaranteed.