55results about How to "Meet the requirements for reuse" patented technology

The invention discloses a regeneration method for a heavy oil hydro-treating catalyst. The regeneration method comprises the following steps of: performing dry distillation, washing with an acidic solution, and performing roasting coke removal treatment, wherein the dry distillation temperature is 300 to 550 DEG C, the acidic solution is a hydrochloric acid-containing solution, the weight ratio of the washing acid to the catalyst is 5 to 50L/Kg, and the acid concentration is 0.1 to 0.5mol/L. Compared with the prior art, the regeneration method has the advantage of well recovering the service performance of an inactivated catalyst.

The invention discloses a prefab house made of autoclaved aerated concrete slabs, which comprises a steel frame, an external wall panel, an internal wall panel, a roof panel and a floor slab, wherein the external wall panel is connected with the steel frame through hook bolts, the internal wall panel is fixed with the steel frame through a U-shaped fastener and/or pipe fastener, the roof panel and the floor slab are shelved on the steel frame, and the peripheries of the roof panel and the floor slab are tamped by cement plaster. The invention further discloses an assembly method for the prefab house made of the autoclaved aerated concrete slabs. The prefab house utilizes the autoclaved aerated concrete slabs as materials for walls, the floor slab and a roof, and heat insulation, fireproofing, sound insulation and impact resistance of the prefab house are improved. Besides, autoclaved lightweight concrete panels and a steel structure are fixed by means of bolt connection, and joints and corners are treated, so that breakage due to assembly and disassembly is prevented, and the requirement of the prefab house on reusability is met.

A safety syringe needle comprises a needle, a needle holder, a needle protective cover, a spring, and a locking-releasing structure, wherein the needle protective cover, which is sleeved on the needle holder before and during injection, is moved to the needle after injection and protects the needle, the spring disposed between the needle holder and the needle protective cover is used for driving the needle protective cover to move from the needle holder to the needle after injection, and the locking-releasing structure disposed between the needle holder and the needle protective cover is used for locking the needle protective cover at the needle holder before and during injection and releasing the needle protective cover after injection. When located at the needle holder, the needle protective cover compresses the spring on the needle holder; and when the needle protective cover is located at the needle, the spring is released. The safety syringe needle prevents medical staff from being accidentally punched by the needle during use, prevents reusing of a syringe/needle, and has the advantages of disposability, safety, sanitation, convenience in use, and easiness in recycling.

The invention relates to the technical field of wastewater treatment, in particular to an advanced treatment process for fermentation antibiotic wastewater. The advanced treatment process comprises the following steps: the fermentation antibiotic wastewater subjected to biochemical treatment is sent into a coagulation reaction tank, and a coagulant and a coagulant aid are added for a reaction; effluent of the coagulation reaction tank is subjected to precipitation separation treatment in a coagulative precipitation tank, and floc precipitates obtained after precipitation are sent into a sludge thickener; effluent of the coagulative precipitation tank is sent into a catalytic oxidation reaction tank and subjected to a Fenton catalytic oxidation reaction; effluent of the catalytic oxidation reaction tank is sent into a catalytic oxidation precipitation tank for precipitation separation treatment, flocs in the effluent obtained after an oxidation reaction are precipitated in the precipitation tank, and precipitated flocs enter the sludge thickener; effluent of the catalytic oxidation precipitation tank enters a two-membrane process desalter for desalting treatment, and the fermentation antibiotic wastewater treated with the process is high in quality and can meet the requirement for reuse of reclaimed water.

The invention relates to a method for regenerating vanadium electrolyte by utilizing a vanadium battery invalidated positive electrode electrolyte of a sulfuric acid system, belonging to the field ofvanadium batteries. The invention solves the problem that the existing process for recovering and utilizing the failed vanadium electrolyte is tedious, A method for regenerating a vanadium electrolyteby using a positive electrode electrolyte of an invalidated vanadium battery is provided, comprising the steps of adding VSO4, H2SO4 and water to the positive electrode electrolyte to obtain a regenerated electrolyte, wherein sulfuric acid is used as a supporting electrolyte for the vanadium battery. The invention takes the positive electrode electrolyte of a failed vanadium battery as raw material to regenerate the electrolyte, the recovery rate can reach 100%, the process is simple and easy to operate, and the invention can be applied to the recovery and regeneration of the failed positiveelectrode vanadium electrolyte of a large-scale hydrochloric acid system, and has a broad popularization and application prospect.

The invention discloses a process for treating and recycling industrial wastewater of peroxide-2-ethylhexoic acid tertiary butyl ester (an initiator OT), belonging to the technical field of industrial wastewater treatment. In the process, the industrial wastewater of peroxide-2-ethylhexoic acid tertiary butyl ester is directly collected from a sewage draining port of a production device and is subjected to stabilization treatment so as to basically eliminate the risk that organic peroxides in the wastewater are heated and severely decomposed, and tertiary butanol-tertiary butyl peroxide mixtures, concentrated sulfuric acid, sodium hydroxide and sodium chloride, which are recyclable, are separated and recycled from the wastewater. The wastewater subjected to removal of most organic matters and recycling of sulfuric phosphate, caustic soda and sodium chloride is subjected to hydrolysis-contact oxidation treatment, and C-Fe is subjected to micro-electrolysis decoloration, so that main water discharge indexes meet the requirements in Discharge Standards of Water Pollutants for Pharmaceutical Industry of Chemical Synthesis Products Category (GB21904-2008) for discharge limits of water pollutants for new enterprises. Therefore, the treatment of the peroxide-2-ethylhexoic acid tertiary butyl ester and the recovering and recycling of pollutants in the wastewater are realized.

The invention relates to a method for regenerating a vanadium electrolyte by using a positive electrode electrolyte of a failed vanadium battery, belonging to the field of vanadium batteries. The invention solves the problem that the existing process for recovering and utilizing the failed vanadium electrolyte is tedious, The technical scheme provides a method for regenerating vanadium electrolyteby using a positive electrode electrolyte of an invalidated vanadium battery, comprising the steps of adding vanadium dichloride, HCl and water to the positive electrode electrolyte to obtain a regenerated electrolyte, wherein the invalidated vanadium battery uses hydrochloric acid as a supporting electrolyte. As that regeneration method of the invention can recover the positive electrode electrolyte of the vanadium battery with a recovery rate of 100%, the waste of resource is avoided, the environment is not pollute, and the electrochemical activity of the regenerated electrolyte is basically identical with that of the normally used vanadium battery electrolyte, so that the requirement of reuse is met.

An environment protection type lavatory without water flushing and electric energy has an excrement and urine separating pan and a linkage system. The ash and sand are used as its cleaning material. Said linkage system driven by opening the door is composed of pull string connected to said door, rotary wheel, flywheel, drum, cam and eccentric foul smell shielding plate. Said all units can be asynchronously linked to automatically deliver the mixture of excrement (or urine) and cleaning material into a foul smell shielding movable accumulator.

The invention discloses a method for cleaning and regenerating an SCR denitration catalyst for potassium and sodium poisoning deactivation. The method comprises the following steps: preparing a cleaning solution and a regenerating solution, performing ash removal treatment on an SCR denitration catalyst subjected to potassium and sodium poisoning deactivation, adding the deactivated SCR denitration catalyst subjected to ash removal treatment into the cleaning solution for bubbling, performing ultrasonic cleaning, drying, bubbling and cleaning in the regenerating solution, supplementing vanadium components of the deactivated SCR denitration catalyst lost in the cleaning process, drying, calcining, and cooling to room temperature, thereby obtaining the regenerated denitration catalyst. According to the regeneration method disclosed by the invention, potassium and sodium poisoning elements of the deactivation catalyst can be effectively cleaned, and the porous structure of the catalyst is restored. Meanwhile, iron ions and arsenic and mercury ions in the deactivation catalyst can be effectively cleaned, the activity of the deactivated SCR denitration catalyst is effectively restored, the compressive strength and wear strength of the SCR denitration catalyst are improved to a certain degree, and the reusing requirement is met.

The invention belongs to the field of water treatment, which discloses an advanced treatment method for diatomite for reclaimed-water recycling. The method comprises the steps that sewage subject to primary treatment and secondary treatment flows through an advanced treatment system comprising a rapid mixing zone and a settling zone, to which diatomite is added, to be subject to advanced treatment; sludge in the settling zone partly flows back to the rapid mixing zone and is partly dewatered and conveyed out during the treatment; the SS concentration in the rapid mixing zone is controlled to be 40mg/L to 80mg/L by controlling the adding amount of the diatomite; a stirring device is provided to stir the sewage and the diatomite; after the sewage and the diatomite are sufficiently mixed, asthe advance rate of water flow becomes slow, the diatomite and micropollutant in the water are further reacted in a slow flow zone, and finally enter the settling zone to be subject to sludge-water separation; and supernatant fluid is discharged. By adopting the method, yielding water can reach the BG/T18920 water quality standard for urban water consumption.

The invention relates to a method for regenerating vanadium electrolyte by utilizing invalid negative electrolyte of a sulfuric acid system vanadium battery and belongs to the field of vanadium batteries. The invention aims at solving the problems that an existing invalid vanadium electrolyte recycling technology is tedious and utilization rate is low. According to the technical scheme, the provided method for regenerating the vanadium electrolyte by utilizing the invalid negative electrolyte of the sulfuric acid system vanadium battery comprises the step of adding VOSO4 aqueous solution, H2SO4 and water into negative electrolyte, thus regenerated electrolyte is obtained, wherein the vanadium battery takes sulfuric acid as supporting electrolyte. By adopting the regeneration method provided by the invention, negative electrolyte of an invalid vanadium battery can be recycled at a recycling rate of 100%, so that waste of resources is avoided, and pollution can not be produced to the environment; meanwhile, electrochemical activities of the regenerated electrolyte are basically the same with those of normally used vanadium battery electrolyte, so that reuse requirement is met.

The invention discloses a reconstructed well wall of a closed or abandoned mine shaft and a construction technology of the reconstructed well wall. The reconstructed well wall comprises a well wall body and a well wall bottom; the upper portion of the well wall bottom is a straight well wall section, the lower portion of the well wall bottom is a hollow hemispheroid well wall bottom, and the outer diameter of the straight well wall section is equal to the sphere diameter of the hollow hemispheroid well wall bottom; the well wall body is in a straight cylinder shape, and the outer diameter of the well wall body is equal to the outer diameter of the straight cylinder well wall section; and the bottom of the well wall body is fixedly connected with the top of the straight well wall section and is in fluid conduction with the straight well wall section. The construction process comprises the following steps: (1) installing a lifting system at the mouth of a closed or abandoned mine shaft; (2) prefabricating the reconstructed well wall on the ground; (3) blocking the shaft bottom roadway of the vertical shaft through concrete; (4) injecting suspension liquid into the shaft; and (5) sinking the reconstructed well wall to a set depth by adopting a suspension sinking process. The method has the advantages of unmanned and mechanized well wall reconstruction in the well, and has the advantages of convenience and safety in construction, low construction cost, short construction period and the like.

The invention discloses a deep treatment method of petrochemical engineering organic wastewater difficult to biodegrade. Secondary treatment effluent of a petrochemical engineering sewage treatment device is treated with a catalytic ozonation and integrated biological filter combination technology, and the method specifically comprises the steps as follows: a coagulant and a coagulant aid are added to secondary treatment effluent for a precipitation reaction; then the sewage enters an ozonation reactor and is subjected to an oxidation reaction with ozone under the action of fixed bed catalytic filler, and the purposes of decolorizaiton and organic matter decomposition are achieved; finally, a high-load biological filter procedure and a variable-pore filter procedure are performed through an integrated biological filter, and after the sewage is treated by biological membranes attached to and growing on the surface of biological filter filler and is filtered by variable-pore filler, biodegradable organic matter in ozone decomposed water can be removed. The method is simple in process and convenient to operate, emission of pollutants in the petrochemical engineering sewage can be effectively reduced, the effluent quality requirement of existing secondary treatment process upgrading and reconstruction is met, and the economic benefit is increased.

The invention discloses a washing machine capable of saving water resources. The washing machine comprises a washing machine body, a tap water inlet pipe and a recycling water inlet pipe are fixedly connected to the upper portion of the washing machine body, a washing machine water outlet pipe is fixedly connected to the lower portion of the washing machine body, and a washing machine fixing blockis fixedly connected to the side edge of the washing machine body; and a water tank assembly is fixedly connected to the lower portion of the washing machine body. According to the washing machine capable of saving the water resources, the washing machine body and the water tank assembly are arranged in a matched manner, so that the washing machine capable of saving the water resources has the effect of preventing the washing machine from shaking; a water tank body, a water inlet branch control pipe, a water inlet branch control electromagnetic valve and a main water drainage pipe are arranged in a matched manner, so that the washing machine capable of saving the water resources has the effect of intelligently storing washing water in batches; and the washing machine capable of saving thewater resources has the effect of intelligently recycling the washing water through cooperative arrangement of a detector, a water pumping electric reversing valve, an electronic water pump and a water pumping sub-control electric valve.

The invention belongs to a multistage filtering and drainage system for deep-long water-rich tunnel underground water and a construction method thereof; the multistage filtering and drainage system for deep-long water-rich tunnel underground water comprises: a tunnel drainage precipitating system that includes a tunnel drainage ditch, a drainage ditch precipitating tank and a stagewise water-stirring pump; a shaft horizontal passage drainage system that includes a horizontal passage water ditch, a shaft precipitating tank and a lifting water pump; an underground sediment removal system; a small excavator for excavating a working face; a gantry crane and a lifting residue bucket for transferring excavation soil residue and removal precipitate in the drainage ditch precipitating tank and the shaft precipitating tank to a ground; a ground multistage filtering and precipitating system that includes a primary precipitating tank, a secondary precipitating tank, a tertiary precipitating tank and a quaternary precipitating tank; and an automatic sediment remover. The multistage filtering and drainage system for deep-long water-rich tunnel underground water and the construction method thereof have the advantages that water produced in the construction of a water-rich karst tunnel can be effectively discharged, a good construction environment is provided, the method is good in simplicity and practicality, the drainage and filtering effects are good, pollution treatment cost is low, sewage is recycled for in-situ reuse, and the service effect is good.

The invention discloses a high-temperature regeneration method of column chromatography silica gel. The high-temperature regeneration method comprises the following steps: a, after loading a tray with silica gel to be regenerated, putting the tray into a car-type electric furnace, and regenerating and activating the silica gel at the temperature of 570 DEG C, wherein the loading thickness is smaller than or equal to 4 cm; b, after the regeneration and activation are over, driving out the car, unloading timely, and loading the car with silica gel to be regenerated again; c, cooling the regenerated silica gel at the air humidity of 45-65%, so as to obtain white regenerated silica gel after cooling. According to the high-temperature regeneration method of column chromatography silica gel, chromatography silica gel is a separation carrier which is used in the separation purification and production processes of Chinese herbal medicine, chemical synthetic drugs and bioactive substances in large quantities; the method is easy to operate, and the regenerated column chromatography silica gel conforms to reuse requirements, and is high in regeneration efficiency and low in production cost; pollution is reduced due to recycling, and the economic benefits are improved.