71results about How to "Reduce the possibility of secondary pollution" patented technology

An environment-friendly carbon nanotube/sodium alginate heavy metal ion sorbing material and a preparation method thereof belong to the technical field of new nano material and environmental protection. Aiming at solving the problem that the carbon nanotube with microsize is likely to cause secondary pollution to water quality while being used as sorbent, the invention uses nontoxicity, good adsorptive capacity and excellent formability of sodium alginate, and prepares carbon nanotube/sodium alginate granular composite material by sol-gel method. The carbon nanotube/sodium alginate granular composite material has good adsorptive capacity on heavy metal ion in sewage. The method has simple preparation process and controllable condition, is suitable for mass production, reduces secondary pollution to water by the carbon nanotube with microsize, and prepares the environment-friendly carbon nanotube/sodium alginate composite sorbing material.

The invention discloses a method and a device for washing industrial dust. The method comprises the following steps of: sweeping the surface of a workpiece by utilizing vortex formed by high pressure gas, and pumping dust blown up by the vortex by utilizing a vacuum hole. In addition, the invention also provides a device for washing industrial dust. The device comprises a vortex generating deviceprovided with at least a vortex outlet, a cover arranged at the periphery of the vortex generating device so as to form the vacuum hole surrounding the vortex generating device and a vacuum pumping device connected with the vacuum hole. The method can replace the methods of utilizing water for washing, utilizing a brush for washing, and the like, saves resources and space and reduces cost, the washed cleanliness is good, and the possibility of secondary contamination is little.

The invention provides a high efficiency fluidization upward flow multilayer composite filter material biological filter tank coupled with ozonation and a water treatment method thereof, relating to a biological filter tank and a water treatment method using the biological filter tank. The biological filter tank is composed of an upper filter material, a medium filter material, a lower filter material and a supporting layer, wherein the upper filter material is active carbon, anthracite or biological ceramsite, the medium filter material is modified zeolite, natural zeolite or synthetic zeolite and the lower filter material is a phosphorus functional material. The filter tank is characterized by fast start, a complex and stable biological phase, great biomass, high activity, strong impact resistance, a filter material expansion rate of 0% to 50%, small resistance at the head of the filter tank, high mass transfer efficiency of materials, oxygen and pollutants, a high utilization rate of filter layers and filter materials and small possibility of occurrence of hardening of the filtering materials. The filter tank is applicable to treatment of raw water in which the concentration of water source phosphorus, ammonia nitrogen and organic pollutants fluctuates and can stably operate at a low temperature.

The invention discloses an electrochemical reactor and a method for removing coexisting high-calcium and high-chloride ions from wastewater. The electrochemical reactor comprises one or more reaction tanks; anodes and cathodes are alternately placed in the reaction tank; aluminum electrodes are served as the anodes; inert electrodes are served as the cathodes. The method comprises the following steps: introducing the to-be-treated wastewater into the reaction tank of the electrochemical reactor, soaking the anodes and the cathodes in the wastewater, applying constant current between the anodes and the cathodes and continuously stirring the wastewater. According to the invention, no drug is additionally added, the possibility of causing secondary pollution is low, the reaction condition is mild and the method is not limited by the scope of the chloride ion concentration, and meanwhile, the device used for reacting is simple, the cost is lower and the realization for automation is benefited.

The invention discloses an automatic separating device for a medical injector, and belongs to the field of medical-apparatus-and-instrument auxiliary devices. The automatic separating device for the medical injector aims at mechanically separating waste injector needles, needle bolts and needle cylinders generated in working. A guiding rail of the automatic separating device is sequentially provided with a fixedly-arranged cutting device, a separating device fixed on the guiding rail through a rail wheel and a loading cart arranged on the guiding rail through walking wheels, wherein the back side of the separating device is connected with a stopping block through a reset spring, and the stopping block is fixedly installed. The automatic separating device is easy to operate, the injector only needs to be reasonably installed, a key is accurately operated, and separating can be automatically completed.

The invention relates to the technical field of carding machines, and discloses a carding machine capable of protecting cotton fibers. The carding machine comprises a shell, a fixing device, a cardingdevice and a handling device, wherein the shell comprises a first fan, a second fan and a through hole; a substrate is fixedly installed on the lower inner wall of the shell; a heating rod is fixedlyinstalled on the upper surface of the substrate; a fixing device is arranged in front of the shell; the fixing device comprises a fixing rod, a round rod and a first thread groove; a cotton fiber barrel is arranged on the outer side of the round rod; the carding device is arranged at the right end of the fixing device; the carding device comprises a cotton comb, a connection rod and a bearing; round grooves are formed in the front of the cotton comb; springs are connected to the round grooves; cotton comb teeth are arranged at the front ends of the springs; the connection rod is arranged on the left surface of the cotton comb; the bearing is fixedly connected to the left end of the connection rod; the inner ring of the bearing is sleeved on the round rod; a bearing sleeve is sleeved on the outer ring of the bearing; a motor is arranged at the front end of the bearing sleeve; ad the bearing sleeve is fixedly connected to the output shaft of the motor. The efficient carding machine hasthe advantages of good carding effect, high carding speed and the like

The invention relates to the technical field of bottle washing machines, particularly relates to wine bottle cleaning equipment based on electrical automation. The equipment comprises an equipment support and a cleaning box which are symmetrically, vertically and fixedly arranged, a drying box and a spraying box which are arranged at the top end of the equipment support, and further comprises a driving belt assembly correspondingly connected with the drying box and the spraying box, the end, far away from the drying box and the spraying box, of the driving belt assembly is in transmission connection with the two ends of the cleaning box correspondingly, a wastewater filtering device is arranged at the bottom of a wastewater recycling bin, a water pumping device is connected to the end, faraway from the wastewater recycling bin, of the wastewater filtering device, a steam generating device is further provided with a steam erupting device, and the steam erupting device is located at thebottom of the cleaning box and is correspondingly arranged with the cleaning box. According to the wine bottle cleaning equipment, the cleaning of bottles can be conducted by generating high-pressuresteam, on one hand, the high-temperature and high-pressure steam can be used for disinfecting the bottles, on the other hand, the steam is not easily retained on bottle bodies, meanwhile, the dryingbox is matched, the probability of secondary pollution is reduced, and the hygiene performance is greatly improved.

The invention discloses a plastic product cleaning device. The plastic product cleaning device comprises a box body; a first material inlet and a water inlet are formed in the top of the box body; a motor is arranged on the left side wall of the box body; a rotary shaft is arranged on the right side of the motor; a roller is arranged on the outer wall of the rotary shaft; a second material inlet is formed in the top of the roller; a rubber plug is arranged in the inner cavity of the second material inlet; a hoisting ring is arranged on the top of the rubber plug; a material guiding plate, a filter layer and a supporting plate are sequentially arranged in the inner cavity of the box body from top down; the filter net is located on the top of the supporting plate; a high-pressure water sprayer and a high-pressure gas sprayer are arranged on the top of the inner cavity of the box body; an overflow pipe and a material outlet are arranged on the right side wall of the box body; a gate valve is arranged on the material outlet; a water outlet pipe is arranged on the bottom of the box body; and a solenoid valve is arranged on the water outlet pipe. By adopting the plastic product cleaning device, sufficient water rinsing can be performed on plastic products; the water rinsing effect is ensured; and besides, the drying equipment is combined with water rinsing equipment, so that cleaning efficiency is improved.

The invention discloses an X-shaped foldable stretcher bracket which comprises a slide groove, a stretcher locking mechanism, a shock absorber, a permanent base, a moveable base, a fixing mechanism and cross arms. The permanent base is installed close to a car, the moveable base is located close to a pavement, and the moveable base is connected with the permanent base through the cross arms. Through the manner that the bracket is foldable, the limited space in a rescue cabin is saved, the practicality of the stretcher bracket is ensured, and the convenience to work of medical rescue personnel is improved.

The invention discloses a coal washing wastewater treatment system. The system comprises a residual sludge bin, a freezing bin, a high-temperature steam wall breaking system, a centrifugal device, a flocculation treatment tank and a solid-liquid separation device. Silicon dioxide with the particle size smaller than 0.075 mm in solid waste generated after coal washing wastewater treatment is a maincomponent; dehydration drying treatment is performed; then caustic soda is added; the mixture is calcined and ground; a calcined product is added into a hydrochloric acid solution and/or acidic minewastewater for activation treatment, and by combining iron and aluminum particles in the residual sludge with lime added in the coal washing wastewater process, polyaluminum ferric calcium silicate isfinally formed, thereby obviously enhancing the sedimentation efficiency of the coal washing wastewater.

The invention provides a magnetic part, a coating clamp and a manufacturing method of the magnetic part. The magnetic part is used for the coating clamp. The magnetic part comprises a base body and anano ceramic coating, and the nano ceramic coating is coated on the base body. According to the magnetic part provided by the invention, the surface of the base body is coated with the nano ceramic coating, and the nano ceramic coating does not generate chemical reaction with cleaning liquid, so that the nano ceramic coating is prevented from being corroded, and the magnetic part is prevented fromrusting. In addition, due to the fact that the magnetic part is prevented from rusting, after the film coating clamp enters the cleaning fluid, no rusty matter enters the cleaning fluid under the action of ultrasonic waves, the situation that the cleaning fluid is polluted due to the fact that the coating is corroded is avoided, the possibility that the quartz wafer is secondarily polluted is reduced, and the quartz wafer can obtain a better cleaning effect.

The invention discloses a dehydration conditioner for high temperature anaerobic digested sludge and a dehydration method of high temperature anaerobic digested sludge. The dehydration conditioner comprises an acryloyloxyethyl trimethyl copolymer and cationic polyacrylamide, the weight ratio of the acryloyloxyethyl trimethyl copolymer is 1.1%-1.37% of the solid content of the high temperature anaerobic digested sludge, and the weight ratio of the cationic polyacrylamide is 0.27%-0.36% of the solid content of the high temperature anaerobic digested sludge. The dehydration method of the high temperature anaerobic digested sludge adopts the dehydration conditioner for conditioning. The dehydration conditioner provided by the invention has the advantages of no corrosiveness, no increase of sludge ash content, no change of the properties of the filter cake and filtrate, good dehydration performance, good applicability, low cost, no secondary pollution, etc., is an environment-friendly conditioner that has good application prospects and can efficiently condition high temperature anaerobic digested sludge, and can achieve the advantages of simple method, good dehydration effect and the like when used for dehydration of high temperature anaerobic digested sludge.

The invention relates to the field of sewage treatment. It includes a filter, an electrolytic tank, a biological treatment tank, a filter tank and an oxygen tank, the filter is arranged above the electrolytic tank, the electrolytic tank is connected to the biological treatment tank through a pipeline A; the biological treatment tank is connected to the filter tank through a pipeline B ; A mechanical filter screen set is set inside the filter, and a biological treatment plate set is set inside the biological treatment tank. The biological method is used to treat the sewage, which reduces the possibility of secondary pollution caused by the chemical method; the simple composition device is suitable for urban sewage treatment.

The invention discloses an edge tool box used on a mobile nursing vehicle, the edge tool box and belongs to the technical field of medical supplies. The invention aims to provide the edge tool box with a cutting function. According to the technical scheme, a case is arranged; a cover plate sliding area and a cutting area are arranged above the case; the cutting area comprises a separation area anda cutting assembly mounting area, the separation area and the cutting assembly mounting area are arranged in the width direction of the case, the cutting assembly mounting area comprises a cutting assembly, and the cutting assembly comprises a tool bit base fixedly connected with the side wall of the case and a pressing type tool bit assembly arranged on the tool bit base; the edge tool box usedon the mobile nursing vehicle is simple in overall structure, convenient to operate and reasonable in structural distribution, and the functional requirements of the edge tool box in actual use are met.

The embodiment of the invention discloses a data processing method and device, a server, a terminal and a storage medium, and belongs to the technical field of computers. The method comprises the steps that a target group in an abnormal state is acquired, the target group comprises at least two accounts, and a first management account in the at least two accounts has management authority for the target group; deleting the first management account of the target group from the target group; any account in a normal state in the target group is determined as a second management account after the target group is replaced; and after determining that the management account of the target group has been changed, recovering the state of the target group to a normal state. According to the embodiment of the invention, normal use of the target group can be maintained, an abnormal account is prevented from performing an abnormal behavior through the target group, and the target group is handed over by a normal account to take over, so that the exception handling effect is improved.