3results about How to "Reduce toxic substances" patented technology

The present application belongs to the technical field of biochar, and particularly relates to a high-activity acidolysis biochar, which is prepared by the following steps: S1, pretreating agricultural and livestock waste; S2, acidolysing the pretreated biomass with dilute acid to obtain acidolysed biomass; S3, placing the acidolysed biomass into a high-temperature furnace to perform carbonization under an oxygen-free condition, and using a step-by-step heating mode to obtain preliminary biochar; and S4, mixing the preliminary biochar with a copolymer solution to prepare the high-activity acidolysis biochar. In the present application, the sodium lignosulfonate-polyglutamic acid copolymer forms a stable connection with the biochar through chemical bonding, the porous surface of the biochar is uniformly covered with the copolymer to form a nanoscale film, the composite has stronger complexing, chelating and ion exchange capacity for heavy metal ions and other cations in the soil, and is helpful to reduce toxic substances in the soil and improve the soil environment.

The utility model relates to the technical field of laser welding, in particular to an air interchanger for a laser welding machine, which comprises a welding machine main body, a water tank is fixedly connected to the top end of the welding machine main body, and a water valve communicated with the water tank is fixedly connected to the front side of the water tank. By arranging the welding machine body, the water tank, the water valve, the fixing frame, the exhaust pipe, the fixing pipe, a connecting hose, a first threaded connector, an air suction connector, an air suction pipe, a fixing cylinder, an HEPA filter block and a high-pressure fan, when the device is used, the high-pressure fan is started, smoke generated by laser welding enters the water tank, poisonous gas is dissolved in water in the water tank, and the poisonous gas is discharged out of the water tank; and the filtered gas enters the inner side of the HEPA filter block, and the purified gas passes through the high-pressure fan to be exhausted into the air, so that toxic gas in the smoke can be dissolved in water, toxic substances in the exhausted gas are reduced, and the gas is prevented from harming the health of operators.

The utility model discloses a storage and transportation waste gas treatment device which is applied to the technical field of waste gas treatment and comprises a purification tower shell, a treatment purification mechanism is arranged at one end of the purification tower shell, one end of the treatment purification mechanism extends into the purification tower shell, and the treatment purification mechanism comprises a motor and a partition plate. The motor is fixedly installed on the outer surface of one end of the purification tower shell, the four partition plates are fixedly installed in the purification tower shell in a linear array mode, purification medicine liquid is arranged between every two conveying partition plates, and a waste gas inlet is formed in the center of the end, away from the motor, of the purification tower shell. Gas enters the purification tower shell through the waste gas inlet, at the moment, the treatment and purification mechanism is started to purify the waste gas, and therefore harmful substances in the waste gas are reduced, and air pollution and harm to the bodies of workers are prevented.