Activated sludge cracking and separating integrated device and process

Abstract

The invention discloses an activated sludge cracking and separating integrated device and process. The device comprises an outer shell barrel and an inner rectifying barrel; spiral guide plates are symmetrically arranged between the shell barrel and the rectifying barrel from top to bottom; a lower cover plate of the shell barrel is connected with a corrugated pipe, a hopper is connected to the lower portion of the corrugated pipe, and a discharging pipe is connected to the lower portion of the hopper; an inverted-L-shaped exhaust pipe is arranged in the center of a top cover of the shell barrel, and exhaust holes are symmetrically formed in the middle wall of the rectifying barrel in the circumferential direction; a sensor mounting flange is arranged on an upper cover plate of the shell barrel; a pressure and temperature instrument is mounted on the sensor mounting flange; a circular-truncated-cone-shaped inner flow guide piece is arranged at the bottom of the rectifying barrel. The device has the advantages of cyclone air separation, fluidized bed, plasma treatment and the like. Chemical reaction, material exchange and energy transfer processes exist, the whole process is carriedout in a high-pressure-difference high-speed environment, and the reaction rate is high.

Description

technical field [0001] The invention relates to a sludge treatment process, in particular to an activated sludge cracking and separation integrated device and its process. Background technique [0002] The disposal of excess sludge in sewage treatment plants has always been an environmental protection problem that plagues the stable operation of various sewage treatment plants. Normally, after the activated sludge has passed the identification of harmful substances, physical landfill is the first choice. With the development of urbanization, landfill plants are generally saturated, resulting in higher and higher landfill requirements and restrictions on sludge landfill. ; Simple high-temperature incineration is not economical, and there is also a risk of secondary pollution of dioxins. High-temperature combined incineration requires a coordinated unit, and the cost of harmless treatment is also high, and it is difficult to promote it; The principle of heat exchange takes up...

AI Technical Summary

Problems solved by technology

[0005] Plasma material treatment has low pretreatment efficiency, high plasma energy consumption, unstable performance, especially high requirements for moisture content control

Simple plasma treatment requires high equipment energy consumption, serious waste of sensible heat, and heat energy recovery efficiency limits the level of energy consumption utilization; high-temperature plasma treatment needs to add auxiliary carbon sources, and low-temperature plasma technology has poor solid-liquid separation effect

[0006] Other sludge disposal methods, such as low-temperature drying, require large equipment volume, difficult heat insulation, high heat loss; long reaction time, large equipment volume; multiple heat recovery, many equipment, heat recovery limit limits recovery rate

In terms of activated sludge carbon source recycling, existing technologies such as low-temperature drying and anaerobic oxidation have deficiencies in microbial inactivation, heavy metal mineralization, and phosphate mineralization.

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