High-dryness sewage sludge integrated treatment system and method

Abstract

The invention discloses an integrated processing system and method for sewage sludge with the high dryness. The system comprises an active gas generator (1), a helical filtering apparatus (2), and an oxidation cylinder (3). The helical filtering apparatus (2) has a double helix structure and includes a helical shaft (2.1), a helical blade (2.2) and a helical cylinder (2.3), wherein the helical shaft (2.1) is installed in the helical cylinder (2.3), and the helical blade (2.2) is arranged on the helical shaft (2.1) and located between the helical shaft (2.1) and an inner wall of the helical cylinder in parallel. The helical shaft (2.1) is hollow and has an end inlet communicating with the active gas generator. Vent holes for leading active gas in are formed in the wall of the helical shaft. One end of the helical cylinder (2.3) is connected to the oxidation cylinder (3). The system is wide in application range, low in energy consumption, and beneficial for sludge reduction, and the processed sludge is low in water content.

Description

Technical field [0001] The invention relates to the field of sewage sludge treatment, in particular to a high-dryness sewage sludge integrated treatment system and method. Background technique [0002] As of 2015, the amount of sludge in my country has reached 40 million tons (80% moisture content), and it is expected to reach 60 million tons by 2020. If such a huge sludge cannot be properly resolved, it will have a major impact on the environment and become A big burden for people's production and life. Due to the high water content of the sludge, the difficulty of dehydration, the richness of organic matter, the fragility, and the foul smell, and the contamination of pathogenic microorganisms and heavy metals, the disposal and treatment of the sludge is very troublesome. [0003] According to my country's "Urban Sewage Treatment Plant Sludge Treatment and Disposal and Pollution Prevention Technical Policy", the treatment and disposal of urban sludge should follow the principles o...

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Problems solved by technology

[0008] In view of this, the present invention aims at the problems in the above-mentioned prior art that the moisture content of the dehydrated sludge is too high, there are many wearing parts, the energy consumption is large, and it is not conducive to the reduction, and provides a kind of High-dryness sewage sludge integrated treatment system and method with low sludge volume, favorable sludge reduction, and low sludge moisture content

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