6483results about How to "Simple processing method" patented technology

The invention discloses a method for treating smelting wastewater containing heavy metals. The method comprises the following steps: 1, the smelting wastewater containing heavy metals is pretreated to remove particulate impurities in the wastewater and adjust the wastewater to be acidic; 2, the wastewater is transferred to an iron-carbon micro-electrolytic reactor to be subjected to single-stage or multi-stage micro-electrolytic electrochemical treatment under acidic conditions to remove most heavy metal ions in the wastewater, the wastewater is adjusted to be weakly alkaline or alkaline, is subjected to single-stage or multi-stage chemical flocculation treatment to further remove other heavy metal ions, and pollutants of arsenic, fluorine, chlorine and the like in the wastewater; and 3, solid-liquid separation is carried out to obtain production water which can be recycled. The method comprises steps of wastewater pretreatment, iron-carbon micro-electrolysis, chemical flocculation and solid-liquid separation which are organically coupled in series. The method which organically combines the micro-electrolysis with the chemical flocculation and allows them to mutually cooperate with each other and co-perform effects has the advantages of simple treating process and technology, low treatment cost, high treatment efficiency, and standard-reached discharge and recovery of the treated wastewater.

The invention relates to a method for processing the high-speed deformation on the surface of metallic material with nano structure, and particularly provides a method for realizing high-speed processing of the organization structure of ultra-fine grains. On the condition of room temperature or low temperature, by adopting a mechanical treatment method with high-speed plastic deformation, the nanoscale bulky crystalline grain structure on the surface layer of the metallic material is refined as equiaxial submicron crystalline grain or nano crystalline grain to form an ultra-fine organization structure of the crystalline grain on the surface layer of the metallic material. With the increase of the depth to the processing surface, the size of microstructure has the change of gradient, increasing from nanoscale and submicron size to micron size. Compared with the existing processing method for forming a surface ultra-fine crystalline grain structure, the high-speed processing method of the invention greatly reduces the roughness of the surface of the processed metallic material and increases the thickness of a deformation layer, and has simple processing method and high working efficiency.

The invention relates to a technology for detecting and processing isolated stone groups in the shield excavation karren section, in particular to a method for processing isolated stone groups in the shield excavation karren section, aiming to solve the problems that the isolated stone groups can not be detected accurately and processed rapidly by using the traditional method. The method comprises the following steps: finding out the section probably having the isolated stone groups according to a geological survey report; arranging testing holes along the longitudinal direction of a tunnel in the section having the isolated stone groups, putting PVC (polyvinyl chloride) pipes in the testing holes, disposing dense small holes on the walls of the PVC pipes, sealing the bottom ends of the PVC pipes, filling the testing holes with water, arranging electrodes in the PVC pipes in the adjacent two holes, detecting by crossing holes and collecting data by using a high-density resistivity instrument, and determining the position of the isolated stone; optimizing a blasting design, positioning blasting charges accurately by using a counter weight, blasting the holes at the periphery of the isolated stone first to squeeze to generate a space, and then blasting the holes row by row. The method is used for detecting the isolate stone accurately, adopts a simple process, uses the blasting technology to ensure that the biggest blasted isolated stone is less than 25cm, avoids the secondary blasting and has high isolated stone processing efficiency.

The invention relates to a mobile robot positioning system based on a two-dimension code navigation band. The mobile robot positioning system based on the two-dimension code navigation band is mainly and technically characterized by comprising a two-dimension code positioning controller, at least two two-dimension code readers and a two-dimension code navigation band, wherein the two-dimension code positioning controller and the two-dimension code readers are installed on a mobile robot dolly, and the two-dimension code navigation band is laid on the ground. The two-dimension code navigation band is formed by a plurality of two-dimension codes arranged in sequence and adjacently. The two-dimension code positioning controller is connected with the two-dimension code readers to be used for collecting two-dimension code navigation information and achieving the accuracy positioning function of a mobile robot. The mobile robot positioning system based on the two-dimension code navigation band is reasonable in design, skillfully avoids the complex character of vision image processing by the adoption of the method of the two-dimension code navigation band, enables the real-time performance of image collection not to be restricted by software conditions and hardware conditions, fundamentally solves the real-time image collection problem which is difficult to solve by technical staffs in the field for a long time, effectively improves operating speed of the mobile robot, and ensures the high efficiency of the mobile robot positioning system.