Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

3456 results about "Liquid waste" patented technology

Liquid waste can be defined as such Liquids as wastewater, fats, oils or grease (FOG), used oil, liquids, solids, gases, or sludges and hazardous household liquids.

Aqueous compositions, aqueous cutting fluid using the same, method for preparation thereof, and cutting method using the cutting fluid

An aqueous cutting fluid which can reduce the impact on working environment and the global environment, and can achieve both preventing precipitates from becoming a hard cake and keeping high dispersibility for abrasive grains is provided. Such an aqueous cutting fluid is obtained by a method comprising dispersing abrasive grains (G) in an aqueous composition comprising a dispersion medium (M) containing a hydrophilic alcohol compound such as ethylene glycol, a lipophilic alcohol compound such as propylene glycol and water, and silica colloid particles dispersed stably in the medium. The dispersion medium (M) is odorless and not flammable. The abrasive grains (G) may settle out after a time, but they do not closely contact with one another, and therefore the resulting precipitates do not become a hard cake, which allows the re-dispersion and reuse of precipitated grains. The instant aqueous cutting fluid is inherently low viscous, and the reduction of viscosity owing to the contamination of water and the increase of viscosity owing to contamination of shavings are both moderate. As a result, the cutting fluid has a long life. And articles which have been cut using the cutting fluid can be washed with water. Further, as the dispersion medium (M) is a biodegradable low molecular weight organic compound, a waste liquid from a process using the cutting fluid can be disposed with an activated sludge.

Recovery processing method of silicon slice cut waste mortar

InactiveCN101823712ALow costHigh recycling efficiencyLubricant compositionLiquid wasteWater flow
The invention relates to a recovery processing method of silicon slice cut waste mortar, comprising the following steps: (1) separating solid-liquid components in the silicon slice cut waste mortar; (2) further recovering the remained cutting liquid component in a solid; (3) separating silicon powder and silicon carbide through water flow flotation; (4) recovering the silicon powder; (5) recovering the silicon carbide; (6) coarsely filtering, finely filtering, decoloring, vacuum distilling and dehydrating the recovered cutting liquid, and adding component with corresponding amount for secondary filter. The method can get various recovered products, such as silicon carbide micro powder, cutting liquid and silicon powder, has high recovery rate and recovery profit and can save the cost of the mortar by at least 40 percent; meanwhile, the invention effectively solves the problem of possible secondary pollution caused by single recovery; the cutting function of recovered and treated silicon carbide micro powder is recovered again, thereby changing waste into wealth, realizing the resource reutilization in true sense, and promoting the development of recycling economy; and the method basically realizes the zero emission of waste liquid by reutilizing the treated waste water after combining a sewage treatment process, thereby being beneficial to environment protection.

Method for recovering lead oxide by waste lead-acid storage battery

A method for recovering lead oxide by a waste lead-acid storage battery is disclosed. The waste lead-acid storage battery is crushed together with lead slime subsequent to acid cleaning, a grid plate and a filler comprising the lead slime are obtained by screening, the grid plate is fused-cast to an alloy ingot, the filler and the lead slime are ball-milled, and fine stuff is added with saturated oxalic acid solution for reaction at 25-65 DEG C and then for filtering and depositing; the deposition is then treated by excessive 30% nitric acid at the temperature of 40-45 DEG C for subsequent filtration and deposition, and the deposition is reacted with 4wt% sal volatile at the temperature of 25-65 DEG C for subsequent filtration and deposition; the deposition is added into recovered HNO3 to be dissolved at the temperature 40-45 DEG C until no bubble is generated, the filtered filtrate is added with 25% ammonia for reaction, filtration, washing and deposition to be neutral, and the lead oxide is obtained by drying and roasting. Recoverable nitramine and ammonium sulfate are recycled in all the filtrates in the technologies; thereby discharging no waste liquid. The utilization rate of raw material is 90.1-92.1%, the yield is 95.0-96.7%, and the content of PbO is 98.0-98.9%.

Treatment recovery method for monocrystalline silicon cutting waste liquor

A treatment and reclaim method of single crystal silicon cutting waste liquid comprises the steps: (1). the waste liquid is treated with diluted hydrochloric acid then is stirred and mixed to enable the liquid to become a flowable mixture; (2). the mixed material is heated to separate solid and liquid, by which water and polyethylene glycol are extracted. The polyethylene glycol is obtained by the process of condensation, dehydration and recovery. The solid after being separated is a crude solid mixture of silicon carbide and silicon; (3). the quadratic-cleaning solid mixture of silicon diluted and silicon is obtained after quadratic cleaning to the crude solid mixture obtained in step 2; (4). the mixture is treated by mixed acid liquid comprising HNO3+HF to recover and get silicon diluted and silicon. The method has easy operation, simple equipment, low cost, high efficiency in treatment and recovery. The allover recovery rate calculated based on the weight of waste liquid can reach 26-46 percent and the recovering material can reach or close to the standard index, and can be directly used in solar energy battery production, so the invented method has good economic benefit and also can greatly contribute to environment protective, thereby having large exploration prospect.

Indirect thermal desorption device

ActiveCN101780467AMaintain physical and chemical propertiesLow costCombination devicesUsing liquid separation agentLiquid wasteCooling tower
The invention relates to an indirect thermal desorption device which comprises a feeding part, an auxiliary part, a heating part, a dedusting part, a washing and cooling part, a waste liquid purifying-recycling part, a waste gas adsorbing and filtering part, a discharging part and a monitoring part, wherein the feeding part and the auxiliary part are connected with the heating part, the discharging part comprises a gas discharging device and a soil discharging device, the washing and cooling part is a washing and cooling tower, the waste liquid purifying-recycling part is connected with the washing and cooling tower, the heating part is orderly connected with the dedusting part, the washing and cooling tower and the waste gas adsorbing and filtering part, the heating part, the dedusting part, the washing and cooling tower and the waste gas adsorbing and filtering part are also respectively connected with the monitoring part, and the waste gas adsorbing and filtering part is connected with an air introducing device in the auxiliary part. The invention has the advantages of large treatment capacity, low treatment cost, soil physicochemical property maintenance and the like, can effectively separate organic matters from contaminated soil and treat the organic matters, and also can complete the processes of waste gas washing, waster gas adsorption and the like so as to reduce the energy consumption of the overall system.

Method for synthesizing graphene-polydimethylsiloxane (PDMS) functional sponge

ActiveCN106084276AContinuous and efficient synthesis processSimple and fast operationOther chemical processesWater contaminantsLiquid wasteUltrasound cavitation
The invention relates to a method for efficiently synthesizing graphene-polydimethylsiloxane (PDMS) functional sponge. The method comprises the following steps: (1) preparing a uniform suspension solution of graphene-PDMS prepolymer-diluent by means of an ultrasound cavitation effect; (2) coating the graphene-PDMS mixture to the surface of a template agent by utilizing the volatilization effect of a solvent; and (3) performing cross-linking and curing on PDMS, and removing the template and the dried sample to obtain the graphene-polydimethylsiloxane functional sponge. The synthesizing process is simple and efficient, and can be used for solving the defect that nano-additives are easily coagulated and easily separated in the using process; and the prepared functional sponge shows the characteristics of unique surface structure, excellent mechanical performance, special moistening performance, flexible plasticizing performance and the like. The graphene-polydimethylsiloxane functional sponge is applied to separation of oil or a non-polar organic solvent in a water body, has high adsorption capability, high adsorption speed, strong selectivity and good recycling capability, and has potential application values in the fields of crude oil leakage treatment, industrial organic liquid waste treatment and the like.

Porous medium combustion apparatus of combustion use liquid fuel

InactiveCN101556040AImproved vaporizationBurn fullyGaseous fuel burnerLiquid wasteCombustion chamber
The invention relates to a porous medium combustion apparatus of combustion use liquid fuel, which comprises a burner shell, a fuel injector, a premixing chamber, a perforated plate, a pulse igniter, porous foam ceramics, and a porous medium pellet and is characterized in that the perforated plate divides the combustion apparatus into a combustion chamber and an upper part and a lower part of the premixing chamber; the combustion chamber is internally provided with the porous medium pellet which is supported by the lower foamed ceramics; the space bond by the foamed ceramics is internally provided with the fuel injector and the pulse igniter; the premixing chamber is connected with an air inlet and a fuel gas inlet; the combustion apparatus preheats the foamed ceramics by the combustion of the gas fuel, and then sprays the liquid fuel on the foamed ceramics to realize the vaporization and combustion of the liquid fuel. The porous medium combustion apparatus of the f combustion use liquid fuel has effects and benefits that the combustion apparatus can burn the liquid fuel such the gas oil difficult to be burned in free space, industrial flammable waste liquor and the like, has the function of a gas burner; the combustion apparatus does not need a vaporizing unit internally and is characterized by high combustion efficiency and low pollutant discharge.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products