59results about How to "No secondary pollution will be introduced" patented technology

The invention discloses a porous cobalt / nickel nanometer granular catalyst and a preparation method thereof. The method comprises the following steps of: firstly reacting alloy nanometer grains containing an aluminum element with an alkali liquor to obtain porous metal nanometer grains; and then, separating the porous metal nanometer grains from a reaction solution, repeatedly cleaning until that the washing liquid PH value achieves neutrality, and finally storing the porous metal nanometer grains after cleaning in de-ionized water or an organic solution. By adopting the method for preparing the porous metal nanometer grains disclosed by the invention, the prepared nanometer grains are high in purity, large in specific surface area and uniform in grain fineness distribution; the preparation process is few in procedures and simple in required equipment; and hydrogenation reaction is carried out on the porous nanometer grains, so that the reaction temperature is reduced, the reaction yield is improved, the reaction rate is increased, and meanwhile, the secondary pollution is not inducted.

The invention discloses a pulped drink food processing machine and a pulped drink food processing method. The pulped drink food processing machine comprises a material supply device, a food processing device, a pulped drink outlet, a rack, a pneumatic device, a supplied material temporary storage device, a communication and control device and a human-machine interface, wherein the material supply device, the food processing device, the supplied material temporary storage device and the human-machine interface are all electrically connected with the communication and control device; the pneumatic device, the supplied material temporary storage device, the human-machine interface and the communication and control device are all mounted on the rack; the material supply device is connected with the supplied material temporary storage device; the supplied material temporary storage device is connected with the food processing device; the supplied material temporary storage device comprises a material storage container and a plurality of valve mechanisms; the valve mechanisms are electrically connected with the communication and control device; the valve mechanisms are fixedly connected to the material storage container and divide the material storage container into a plurality of small cavities. According to the pulped drink food processing machine and the processing method, the container for temporarily storing food materials is provided, so that automatic processing can be realized, and no secondary pollution is caused; pulped drink food can be discharged in delay or in advance, and the automation degree is high.

The invention discloses a method for the advanced treatment to chemical waste water biochemical tailwater. The method comprises the following steps: under the conditions of normal temperature and the flow quantity of 0.5 to 8BV / h, water is removed from the chemical waste water biochemical tailwater after being pretreated through a device filled with a resin adsorbent, and the water is added with alkali for neutralization and then can be discharged; the resin is desorbed and regenerated with an alkalic desorption agent and an acidic desorption agent, the flow quantity of the desorption agent is 0.5 to 3.0BV / h, advanced treatment is performed to desorption liquid with a high concentration, and desorption liquid with a lower concentration can be used for the preparation of the next batch of desorption agent for circulating and matching. Protocercal tail water COD is 120 to 250 mg / L, the COD can be reduced to below 75 mg / L through treatment, and after the COD adsorbs the resin after being saturated and regenerated through desorption, the desorption ratios are all more than 96 percent, and advanced treatment can be performed to the desorption liquid with the high concentration. With the advantages of simple process, and simple and convenient operation, the method is economic and highly efficient, and has better practicability without introducing secondary pollution.

The invention discloses a road rainwater pneumatic diversion treatment system. The system comprises a compressed air source, a gas delivery pipe, a diversion well arranged on a municipal rainwater pipe and a control valve; the diversion well comprises a well body structure, an inlet, a first water outlet pipe, a second water outlet pipe and a pneumatic cut-off device arranged on the second water outlet pipe, the well body structure is provided with the inlet, the first water outlet pipe and the second water outlet pipe, the pneumatic cut-off device is the second pneumatic cut-off device, the inlet is communicated with the municipal rainwater pipe on the upper stream of the diversion well, the first water outlet pipe is communicated with the municipal rainwater pipe on the lower stream of the diversion well or a natural water body, the second water outlet pipe is communicated with a municipal sewage pipe or sewage treatment facilities, and a third outlet is communicated with a first rain pipe or initial rainwater treatment facilities; the control valve comprises the second control valve which is arranged on the gas delivery pipe, and the second control valve controls charging and discharging of the second pneumatic cut-off device separately, and is used for controlling cut off and conducting of the corresponding second water outlet pipe.

The invention belongs to the field of sewage treatment, in particular relates to a method for removing trace polycyclic aromatic hydrocarbon from water by utilizing the quick adsorption of a polylactic acid-caprolactone (P(LA / CL),7 / 3) electrospinning nanofiber membrane, which comprises the two steps of preparing the electrospinning nanofiber membrane and removing the trace polycyclic aromatic hydrocarbon from the water by utilizing the adsorption of the electrospinning nanofiber membrane, namely preparing the electrospinning nanofiber membrane with excellent adsorption performance from biodegradable polylactic acid-caprolactone (P(LA / CL),7 / 3) serving as a raw material by electrospinning technology, wherein the ratio of polylactic acid to the polycaprolactone during synthesis is 7:3; and reacting the electrospinning nanofiber membrane with mixed solution of polycyclic aromatic hydrocarbon at different concentrations to remove the polycyclic aromatic hydrocarbon from the water through adsorption. Through the method for removing the trace polycyclic aromatic hydrocarbon from the water through quick and efficient adsorption provided by the invention, over 80 percent of polycyclic aromatic hydrocarbon (the concentration range is between 1 and 10 micrograms / liter) can be removed from the water within 20 minutes through adsorption, an adsorbent has the advantages of simple preparation process and easy recycling; and the method has the advantages of easy operation, low cost, high efficiency and time conservation.

The invention relates to a cerium-based ozone catalyst containing double active sites as well as a preparation method and application thereof, and belongs to the technical field of advanced wastewatertreatment and environmental catalysis. The preparation method of the cerium-based ozone catalyst comprises the following steps: 1) preparing a melamine solution; 2) adding cerium salt into the melamine solution in the step 1), then adding a polyhydroxyl carboxylic acid auxiliary agent and hydrochloric acid, and stirring to obtain a mixture; and 3) drying the mixture, and calcining to obtain a Ce-g-C3N4 catalyst, which is used for degrading organic pollutants in wastewater. Compared with the prior art, the Ce-g-C3N4 catalyst has the advantages that the preparation process is simple, the raw materials are cheap and easy to obtain, and the Ce-g-C3N4 catalyst is insoluble in acid, alkali and an organic solvent, has high catalytic activity and stability, low dosage, a wide pH application rangeand good reusability, has a good mineralization promotion effect on various refractory organic pollutants, and has a wide prospect in advanced treatment of industrial wastewater.

The invention aims at providing a novel leaf fertilizer accessory ingredient. A production method of the leaf fertilizer accessory ingredient is as follows: natural nano material compounds such as straw ash in a power plant are physically and chemically modified, so that the surface hydroxyl number is increased, and dispersion performance and absorption performance are improved, the leaf fertilizer nutrient is preferably absorbed by a micro nano structure of an accessory ingredient material and fixed by a coarse plant leaf, the adhesive ability of the leaf fertilizer on the plant leaf is improved, the drifting, eluviation loss and volatilization loss are reduced, the aims of prolonging lasting period and improving the nutrient utilization are achieved. According to the method, the main raw material is natural and environment-friendly and is free from the secondary pollution; and meanwhile, the fertilization dosage and the fertilization times are reduced, the labor and the cost are saved, and the environment pollution is reduced. The technology conforms to the leaf fertilizer development direction and has great market potential.

The invention discloses a composite coating agent for aloe gel carried deep submicron Ag and a method of using the composite coating agent for keeping aloe fresh and belongs to the field of fresh-keeping of fruits and vegetables. A synthetic method of the composite coating agent comprises the steps of selecting sodium dodecyl sulfonate and the like as a modifier of Ag, assisting by hydrochloric acid to regulate a pH value, carrying out reaction under the condition of heating and mixing to obtain modified deep submicron Ag, putting the deep submicron Ag, the aloe gel, glycerel monostearte and acetic acid in a magnetic heating mixer, and carrying out mixing and ultrasonic degassing to obtain the aloe gel / deep submicron Ag composite coating agent. With the adoption of the composite coating agent, a composite film can be prepared; after fresh aloe stems and leaves are treated by methods of selection by classifying, impurity removal by cleaning, finishing, slitting, rapid sterilization, coating, packaging and warehousing, the initial colors, the surface elasticity, the moisture and the nutritional ingredients of the fresh aloe stems and leaves can be effectively kept. The composite coating agent, the composite film and the method of using the composite coating agent for keeping the aloe fresh are easy to operate, are high in high performance cost ratio and have a wide prospect.