37results about How to "Solve the problem that easily causes secondary pollution" patented technology

The invention relates to the technical field of organic exhaust gas recovery processing, particularly a method and a device for treating organic exhaust gas. The method for treating organic exhaust gas comprises the following steps: introducing the organic exhaust gas into a packed absorption column, and spraying the organic exhaust gas in the forward direction by using a spray header; passing the sprayed exhaust gas upward through a packing layer and secondarily absorbing the exhaust gas with a spray liquid which is downwardly sprayed to obtain a gas-liquid mixture; carrying out catalytic oxidation and microbial decomposition on the spray liquid through a catalytic biochemical reactor to form overflow liquor, wherein the overflow liquor passes through the packing layer and falls back to the bottom of the packed absorption column, so that the organic matters in the spray liquid are decomposed into CO2 and H2O or converted into small molecular substances; and demisting the gas-liquid mixture which is obtained after the spraying and absorption by the spray liquid and then discharging the mixture out of the packed absorption column. The method for treating organic exhaust gas integrates spraying and absorption, catalytic decomposition and microbial decomposition, can synchronously purify the organic exhaust gas and the spray liquid, and has the advantages of being simple and convenient to operate and high in purification efficiency.

The invention provides a method for recycling and processing a waste liquid produced by a combined desulfurization and denitrification technology using steel slag as an absorbent. Firstly, solid-liquid separation is conducted on the waste liquid which absorbs SO2 and NOx and reaches a total salt concentration; then, after the separation, quick lime and / or slaked lime are / is added into the obtained liquid phase to adjust pH, and after filtration, the pH of the filtrate is adjusted to 5-7; the filtrate is introduced into a micro-nano bubble generator, nitrite in the filtrate is completely oxidized to nitrate, and by subsequent operations such as evaporation, concentration, crystallization, filtration, desiccation and the like, calcium nitrate products are obtained. The method is a subsequent process of a metallurgy-slug combined desulfurization and denitrification technology, and solves the problem that secondary pollution is caused by the waste liquid which is produced by the metallurgy-slug combined desulfurization and denitrification technology, the nitrite is completely converted into the nitrate, the complete utilization of the N element in the waste liquid is achieved, and the pure calcium nitrate products are obtained. Meanwhile, the calcium nitrate products reach national standards of industrial calcium nitrate and agricultural calcium nitrate, and have good application prospects.

The invention discloses a medical high-efficiency filter that can be sterilized twice, which includes an air intake assembly, a sterilizing assembly and a cooling assembly. In the cavity, the air inlet pipe is connected to the support shell, and the motor is connected to the blades. Turn on the motor to rotate the blades to inhale the air, which is pre-filtered by the filter; the sterilization component includes a connecting pipe, a sterilization chamber, a nozzle and a steam generating device. The sterilization chamber communicates with the support shell through the connecting pipe, the steam generating device communicates with the nozzle, the nozzle is located in the sterilization chamber, the steam generating device generates high-temperature steam, and the air passing through the connecting pipe is sterilized by high temperature; the cooling assembly includes a spiral pipe 1. The air outlet pipe and the cooling box, the spiral pipe is connected with the sterilization chamber, and there is a cooling box on the outside, in which there is coolant to cool the air, and finally the clean and sterile air is discharged from the air outlet pipe to avoid secondary pollution.

The invention relates to a medical care device, in particular to a medical waste treatment device. The medical waste treatment device comprises a material entering box, a smashing box, a centrifugal box, a filtering box, a transporting box and a box body; the problems that lots of waste, such as infusion tubes and infusion bottles, is generated in the medical care process in a hospital, treatmentof the waste is in priority among priorities, in the smashing treatment process of the infusion tubes and the infusion bottles, liquid remaining in the infusion tubes and the infusion bottles flows out, and secondary pollution is caused easily can be solved; and the problems that according to a treatment manner of the medical waste, mostly the medical waste is classified and then is buried for treatment, and secondary pollution can be easily caused to the environment can also be solved.

The invention discloses a medical sewing needle device. The medical sewing needle device comprises a shell, a hollow cavity arranged horizontally is formed in the shell, a hollow clamping mechanism with an opening at the upper end is detachably arranged on the shell, the clamping mechanism is communicated with the hollow cavity, a spring is fixed in the inner bottom of the clamping mechanism, multiple sewing needle box mechanisms are arranged in the clamping mechanism in sequence from top to bottom, the sewing needle box mechanisms are above the spring, one end of the shell is provided with anopening communicated with the hollow cavity, the other end of the shell is provided with a push rod mechanism, at least a part of which is in the hollow cavity, the sewing needle box mechanisms in the clamping mechanism can enter the hollow cavity under the elastic role of the spring, so as to push the push rod mechanism to push the sewing needle box mechanism out from the opening. The problem that no special tools for placing common sewing needles are designed, the sewing needles are exposed, thereby being easy to be contaminated for the second time in threading or needle change is solved.

The invention discloses a medical suture needle device which comprises a shell. A hollow cavity arranged in the horizontal direction is formed in the shell. A hollow clamping mechanism with the upperend provided with an opening is detachably disposed in the shell. The clamping mechanism is communicated with the hollow cavity. A spring is fixed to the inner bottom of the clamping mechanism. The clamping mechanism is internally also sequentially provided with a plurality of suture needle box mechanisms from top to bottom, and the suture needle box mechanisms are located above the spring. One end of the shell is provided with an opening communicated with the hollow cavity, the other end of the shell is provided with a push rod mechanism at least partially located in the hollow cavity, and the suture needle box mechanisms in the clamping mechanism can enter the hollow cavity under the effect of an elastic force of the spring to push the push rod mechanism and can push the suture needle box mechanisms out from the opening. The problem that a general suturing needle has no special placement tool, the suture needle is exposed, and the secondary pollution is easily caused during the threading process or the needle replacement operation is solved.

A electromagnetic shielding light window of a graphene mesh and double-layer metal mesh composite laminating structure belongs to the optical transparent-component electromagnetic shielding technology field. By using the electromagnetic shielding light window, a characteristic that a graphene mesh film expresses different light transmission and microwave shielding characteristics when possessing different mesh unit trepanning area ratios is used to organically combine a low reflection and partial absorbed microwave characteristic of a graphene mesh film and a high electromagnetic reflection characteristic of a high-light-transmission double-layer metal mesh so as to form a multilayer structure. The double-layer metal mesh is taken as a transparent reflecting layer and N graphene mesh films which are separated by a transparent medium are taken as transparent absorption layers. By using the structure, a radio frequency can radiate several times, pass through an absorption layer and is highly absorbed so that high shielding and low reflection characteristics are realized. Visible light penetrates the laminating structure for one time and high light transmittance is possessed. The graphene mesh films have periodical trepanning structures so that light transmittance performance is increased. In an existing transparent electromagnetic shielding method, high light transmission, low electromagnetic reflection and high electromagnetic shielding can not be realized simultaneously. By using the electromagnetic shielding light window, the above problem is solved.