There is such a bridge, replacing the traditional reinforced concrete with a new steel structure bridge, which can be assembled on site in a light and fast manner. The construction period is 1∕3 of the general bridge, which fills an international gap in bridge construction. It is understood that this bridge is jointly developed by the provincial high-level management bureau, Southeast University, Tongji University, Xingtai Road and Bridge Construction Corporation, has independent intellectual property rights, has been adopted by Daguang Expressway, Shijiazhuang South Third Ring Cross Qingyin Expressway Overpass, Beijing Stone This product will also be used at high speed.
In the production workshop, the reporter learned that the steel component bridge is composed of a steel box combined into a superimposed unit, combined with prestressing technology and cement concrete technology to achieve combined force and assembled into a steel structure bridge. The four technologies, such as the assembled composite box girder and component unit body, corrugated steel web concrete composite box girder, corrugated steel web concrete composite box girder component unit and environmental protection ecological assembly bridge, have won the national utility model patent and filled the patent. An international gap in bridge construction.
Coal-based column Activated Carbon with high quality anthracite as raw material. Coal-based column activated carbon has a good adsorption effect for the volatile organic compounds in water, which can make removal rate of adsorption reach 25%~65% for all kinds of volatile organic compounds in water.
Its appearance is black columnar, the characters are tasteless, non-toxic, high mechanical strength, developed pore structure, large surface area, the pore size is between coconut shell activated carbon and wood activated carbon, high adsorption speed, high adsorption capacity, easy regeneration. It is a kind of durable environmental protection activated carbon.By strict material selection and rigorous process, adopting the advanced technology and high temperature activation made. Comparing to different molecular weight organics can be seen that for volatile organic compounds, the higher the molecular weight, the higher the removal rate of the adsorption. This rule is similar to phenol and cationic that for the small molecule organic matters in water, the higher the molecular weight, the more easily adsorbed by activated carbon.
Coal-based Columnar Activated Carbon
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