A combined device for intensifying sludge dewatering with latent heat self-cleaning tray and sludge drying method

Abstract

The invention provides a combined device capable of self-purifying discs and strengthening sludge dewatering by utilizing latent heat. The combined device is characterized in that a spiral sludge conveyor is arranged at the bottom of an inclined tube sedimentation tank; an inclined tube is laid above the spiral sludge conveyor; the lower part of the inclined tube sedimentation tank is connected with a wet carbonation reactor via a hydraulic pump; a nano aeration disc is arranged at the bottom of the wet carbonation reactor; the sludge in the wet carbonation reactor is guided into a moist heat drying device; motors are installed at one end of the moist heat drying device and drive two driving shafts horizontally arranged in parallel to rotate; the driving shafts are in a hollow structure; an air inlet is formed at one end of each driving shaft and a drain hole is formed at the other end of the driving shaft; two spiral turntables arranged in parallel are arranged on the driving shafts horizontally; the surfaces of discs on the sections, close to a support, of the spiral turntables are smooth and the surfaces of the discs on the rest sections are bestrewed with small holes. The invention also discloses a method for drying the sludge by utilizing the device.

Description

technical field [0001] The invention relates to a combined device for intensifying sludge dewatering with a latent heat self-cleaning tray. [0002] The present invention also relates to a method for drying sludge using the above-mentioned device. Background technique [0003] Nowadays, the concept of using biological methods to treat sewage has spread all over the world, and the effect is remarkable, but a large amount of by-products-sludge are produced in the process of treatment. The treatment of sludge has become a hot issue. For example, sludge treatment has been neglected, and sewage Long-term stacking of mud will lead to mosquitoes and flies, causing secondary pollution to the environment and seriously affecting the production and life of surrounding residents. The sludge drying process designed by the present invention can kill insect eggs and pathogenic bacteria, and denature refractory pollutants such as residual polycyclic aromatic hydrocarbons and heterocyclic c...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the concept of using biological methods to treat sewage has spread all over the world, and the effect is remarkable, but a large amount of by-products-sludge are produced in the process of treatment. The treatment of sludge has become a hot issue. For example, sludge treatment is ignored, and sewage Long-term stacking of mud will lead to mosquitoes and flies, which will cause secondary pollution to the environment and seriously affect the production and life of surrounding residents.

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