14 results about "Liquid waste" patented technology

The invention provides a method for improving the yield of synthesized 2-furanyloxoacetic acid (furanone acid), and the method is characterized in that a mixture containing 2-furanyloxoacetic acid which is obtained by transforming raw material acetofuran is firstly extracted by utilizing organic solvent, a product 2-furanyloxoacetic acid is obtained from the aqueous phase after the extraction, then gas is replenished into oil phase after the extraction so as to remove the organic solvent for the extraction through the blowing of the gas, and the extracted oil phase with organic solvent being removed is reserved. Due to the adoption of the method, acetofuran, furanone acid and transition-state substances can be recycled, the utilization rate of atoms can be increased, liquid waste and solid waste can be reduced, and the product yield of the furanone acid can be increased.

The invention relates to treatment equipment for kitchen waste. The treatment equipment comprises a stirring device, a solid-liquid separation device, a solid processing treatment device and an oil-water separator; the stirring device is positioned above the solid-liquid separation device; the lower end of the solid-liquid separation device is provided with a solid outlet pipe and a liquid outletpipe; the solid processing treatment device is arranged at the lower end of the solid outlet pipe; and the oil-water separator is arranged at the lower end of the liquid outlet pipe. According to thetreatment equipment for the kitchen waste, the kitchen waste can be automatically stirred evenly and cut, then solid waste and liquid waste are separated through the solid-liquid separation device, the liquid waste is discharged through the oil-water separator, the solid waste is converted into feed used for fowl after being processed by the solid processing treatment equipment, operation is convenient and labor-saving, and actual production and processing requirements are met.

The invention provides a treatment method of chemical copper plating waste liquid. The method comprises the following steps: (1) mixing persimmon tannin and copper plating waste liquid to form a solution, and performing stirring reaction at the room temperature; (2) adding a water solution containing 25% of glutaraldehyde to the solution, adjusting the pH value, and then performing stirring reaction at the room temperature; (3) adjusting the pH value of the solution to make the persimmon tannin settled, filtered and dried, so as to obtain a solid; (4) carbonizing the obtained solid at high temperature, so as to obtain CuO. The treatment method of the chemical copper plating waste liquid has the following advantages that 1, the chemical copper plating waste liquid is treated by using the persimmon tannin, thereby realizing environmental protection and no pollution; 2, the cost is low, the operation is convenient, and the application effect is good; 3, Cu can be effectively recycled to make waste profitable. Therefore, compared with the prior art, the treatment method of the chemical copper plating waste liquid has a better treatment effect, improves the production rate, reduces the cost, and has a wide application prospect in the field of treatment of chemical plating waste liquid.

The invention discloses a preparation method of an Ag2Se/GO nano material with a micro-flower structure and application of the nano material in photocatalytic degradation of textile waste liquid. Thepreparation method comprises the following steps: pouring a mixed solution containing a silver source and a selenium source into a high-pressure reaction kettle which is lined with polytetrafluoroethylene and contains graphene oxide sheets, and then sealing and placing in a reaction furnace to perform heating for reaction to obtain the nano material with the Ag2Se/GO micro-flower structure, wherein the mixed solution containing the silver source and the selenium source is prepared by dissolving silver nitrate in deionized water, adding EDTA, mixing uniformly, adding selenium powder and sodiumborohydride into the mixed solution, and stirring uniformly. The Ag2Se/GO nano material with the micro-flower structure synthesized by the preparation method has excellent photocatalytic performance and can be used as a photocatalyst to purify textile wastewater, degrade colored dyes and the like.

The invention discloses a process for extracting commercial grease by using tanning waste liquor containing grease, which comprising the following steps: (1) filtering the grease by grids; (2) adding sulphric acid into a concentrating purifying and layering tank; (3) collecting white supernatant liquid containing grease at the upper layer; (4) dripping water in a drying bed; (5) sending the grease into a pan to steam water; and (6) obtaining the commercial grease by the pressing of a presser. The process ensures that the waste liquor containing grease is directly prepared into the commercial grease during the tanning after being pretreated in the prior period, has wide purpose, realizes the purposes of saving energy and reducing emission, turning the harmful into the beneficial and changing waste into valuable, has simple process, investment saving and low operation cost, reduces COD, BOD and SS in the waste liquor by respectively 90 percent, 95 percent and 98 percent, greatly lowers the difficulty of the tail treatment of the tanning waste liquor and settles the solid basis for the sustainable development in the tanning industry. The recovery cost of every ton of grease is within 1400 RMB by the method.

The invention discloses a treatment system and method for mixed waste liquid of drilling wastewater and fracturing flowback fluid. The system comprise a wastewater storage unit, a flocculant filling unit, a coagulant aid filling unit, a static mixing unit, a micro-chemical flocculation unit, a gravity settling unit, an ion masking agent filling unit and an ion exchange unit. A flocculant is addedto the mixed waste liquid of the drilling wastewater and the fracturing flowback fluid sequentially and evenly mixed with the mixed waste liquid, a coagulant aid is added to the mixed waste liquid ofthe drilling wastewater and the fracturing flowback fluid for reaction, floating matter and precipitates are finally removed by standing, corresponding treatment agents are selected according to the characteristics of different metal ions in the wastewater to remove calcium, magnesium and boron ions in the wastewater, and treatment can be completed with the process. After treatment with the process, the concentration of suspended matter in water is lower than or equal to 10 mg/L, the concentration of calcium ions is lower than or equal to 300 mg/L, the concentration of magnesium ions is lowerthan or equal to 150 mg/L, and the concentration of boron ions is lower than or equal to 10 mg/L. The treated mixed waste liquid of the drilling wastewater and the fracturing flowback fluid can be used for guanidine gum fracturing water in tight gas wells, and reuse of water resources is realized.

The invention discloses a medical liquid waste and solid waste collecting device used for collecting liquid waste and solid waste conveniently. The device comprises water collecting fabric and a guidepipe, wherein a circular hole is formed in the water collecting fabric; and the guide pipe is fixedly connected with the water collecting fabric and communicates with the circular hole, and a screening net is arranged on the inner side of the guide pipe. According to the medical liquid waste and solid waste collecting device provided by the invention, the liquid waste and solid waste can be collected, operation is convenient during collecting, and the device only needs to be placed in a liquid discharging position, or the solid waste is directly discarded into the guide pipe; and by arrangingthe water collecting fabric, the superficial area is large, and liquid waste splashing can be avoided.

The invention belongs to the field of numerical control machine tool equipment, and particularly relates to an efficient machining waste recycling device for a numerical control machine tool. The efficient machining waste recycling device is mounted below a machine tool working guide rail and comprises a chip collecting groove, a sliding groove, a separation bin, a liquid collecting bin, a solid-phase separation device and a liquid-phase separation device, wherein a mounting mechanism is arranged on the side face of the groove body of the chip collecting groove; the sliding groove is used forcommunicating the chip collecting groove with the separation bin; a sealing plate capable of being opened and closed is arranged at the joint of the separation bin and the sliding groove; the liquid collecting bin is located below the separation bin; a first filter screen and a second filter screen are arranged in the liquid collecting bin; the solid-phase separation device comprises a first push-pull baffle, a second push-pull baffle, a connecting rod and a first driving mechanism; and the liquid-phase separation device comprises a pressurizing bin, a piston and a second driving mechanism. Bymeans of the efficient machining waste recycling device, solid waste and liquid waste generated in the machining process can be well separated, and classified recycling can be effectively completed.