2results about How to "Extend regeneration time" patented technology

The present application relates to a kind of renewable hydrogen sulfide removing agent and its preparation method and application, the renewable hydrogen sulfide removing agent with silica alumina gel as carrier, by loading aluminium hydroxide colloidal solution to silica alumina gel carrier, continue water vapor aging makes aluminium gel and carrier secondary combination, thereby obtains the hydrogen sulfide removing agent with more concentrated pore size distribution, active adsorption site is more abundant.The removing agent is suitable for the removal of hydrogen sulfide in hydrocarbon organic medium, the use condition range is that hydrogen sulfide concentration is less than 1000ppm, removal precision is less than 0.1ppm.When saturated with hydrogen sulfide, the scavenger can be regenerated under the purge of oxygen-free atmosphere, restore removal capacity, regeneration temperature is 250~300 ℃.Compared with prior art, the hydrogen sulfide removing agent prepared in the present application has more prominent hydrogen sulfide removal capacity, adsorption capacity is increased by 3-5 times, and regeneration cycle is prolonged by 2-5 times.

The application discloses an intelligent treatment system and method for electroplating chromium-containing wastewater, which comprises a sensor module, an image acquisition module, an intelligent control center and a controlled module; the sensor module is used for collecting operation data; the operation data comprises pH data and ORP data; the image acquisition module is used for collecting supernatant image data of a sedimentation tank; the controlled module is used for carrying out frequency conversion control of a dosing pump when adding chemicals to a chromium-breaking tank and / or when adding acid or alkali to a pH adjusting tank; and the intelligent control center is used for analyzing the received operation data and image data, and sending control signals to the controlled module to realize frequency conversion control of the controlled module. The application can accurately control the amount of reducing agent, thereby saving the amount of reducing agent and reducing the subsequent treatment load.