Abstract: A method for conditioning advanced anaerobic digestion sludge by deep dehydration based on particle size control, the use thereof and a floc particle. The method for conditioning advanced anaerobic digestion sludge by deep dehydration comprises: (1) uniformly mixing advanced anaerobic digestion sludge with a first cationic organic flocculant to obtain non-hard muddy flocculated particles; (2) uniformly mixing the muddy flocculated particles with aggregate; (3) uniformly mixing the resulting mixture with inorganic agent; (4) adjusting the particle size of the floc particles using second organic flocculant; and (5) performing plate-frame dehydration so as to reduce the moisture content to 60% or less. In the method, by means of the combination of organic flocculation nucleation with a particle size skeleton, the use amount of the inorganic agent is effectively reduced, such that the conductivity of the mud cake is reduced, facilitating the landscaping utilization, incineration disposal etc.

Abstract: An electronic device comprises a housing and a camera decoration assembly including a first decoration part and a second decoration. The second decoration part sleeves an outer side surface at an end, outside the housing, of the first decoration part, and an outer edge of the second decoration part extends to an outer surface of the housing, such that in addition to a camera decoration assembly having diverse appearance effects, a size of a hole formed in the housing can be decreased to enhance overall strength of the housing. Moreover, a form of connection between a buckle and a connection assembly facilitates disassembly, decreases occupied space, and can increase flexibility in disassembling the camera decoration assembly.