36results about How to "Help broken" patented technology

The invention relates to a method for utilizing enhanced pretreatment to promote the anaerobic digestion of excess sludge, belonging to the technical field of solid waste treatment. The method comprises the following steps of gravity concentrating excess sludge in urban sewage treatment plants, and then adding certain amount of sodium hypochlorite, stirring the sodium hypochlorite fast with the excess sludge, and then feeding the mixture into an ultrasonic reactor to perform ultrasonic treatment. With the coaction of the ultrasonic and the sodium hypochlorite, the bacterial cell wall structure in the sludge is damaged, the inclusion of the cell is discharged, the content of soluble organic substance in the water is increased, after certain time of treatment, the sludge is fed into an anaerobic digestion reactor to perform subsequent medium temperature anaerobic digestion; the biomass gases generated by the anaerobic digestion are comprehensively utilized through a gas collection device. The concentration of SCOD (soluble chemical oxygen demand) in the sludge liquid phase is improved by about 27 times after the treatment, the biomass gas yield is increased by 54.4%, and the content of methane in the biomass gas is improved by about 10%, so that the energy consumption of the ultrasonic treatment is reduced greatly. With the adoption of the method provided by the invention, for the sewage treatment plants with different sizes, a good effect can be obtained by performing corresponding reconstructions on the existing treatment facilities.

The invention discloses a treatment device for a plastic needle cylinder of a disposable medical syringe, and relates to the technical field of industrial equipment. The treatment device comprises a support, wherein a treatment box is fixedly connected to one surface of the support; a crushing cavity which has a circular hollow structure is formed in the treatment box, and a discharging hole communicating with the crushing cavity is fixedly formed in the bottom surface of the treatment box; a filter cylinder is rotationally connected to one surface of the crushing cavity through a bearing; anouter driving pipe is rotationally connected to the inner wall of the filter cylinder through a bearing; an inner driving rod is rotationally connected to the inner wall of the outer driving pipe through a bearing; and a group of partition seats are fixedly connected to the inner wall of the filter cylinder. According to the treatment device, through the design of a forward cutting knife group, afirst reverse cutting knife group and a second reverse cutting knife group, a traditional single-direction crushing mode is changed into a double-direction crushing mode, and through double-directioncrushing, the shearing force is improved, so that the crushing effect is improved.