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Harmless sludge-treatment method

A harmless sludge treatment technology, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of high water content and hinder the development of sludge incineration treatment technology , environmental secondary pollution and other issues, to achieve the effect of enhancing heat exchange capacity, avoiding harm to the human body and the environment, and improving energy utilization

Inactive Publication Date: 2019-03-26
刘营营
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sludge is rich in organic matter, pathogenic microorganisms, parasite eggs, toxic and harmful heavy metals, and a large number of microbial refractory substances. If it is not handled properly, it will easily cause secondary pollution to the environment.
However, the moisture content of sludge produced by urban sewage treatment plants generally exceeds 75%-99%, which is extremely high, which hinders the development of sludge incineration treatment technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 Shown, a kind of sludge harmless treatment method, it comprises the following steps:

[0025] 1) Construction of a sludge incineration device, the sludge incineration device includes a sludge dehydration device 11, a mixing device 10, a drying device, a combustion device, a water circulation device 6 and a combustion barrel 5, and the sludge dehydration device 11 is provided with a dehydration outlet feed port and dehydration feed port, the mixing device 10 is provided with a mixing feed port and a mixing discharge port, the dehydration discharge port is connected with the mixing feed port, and the drying device includes a box body, an auger 9 and a driving device 8, the auger 9 is arranged in the box, the driving device 8 is connected with the auger 9 to drive the auger 9 to rotate, and one end of the box is provided with a box body The other end of the box is provided with a box outlet, and the box inlet is connected to the mixing outlet. The combust...

Embodiment 2

[0030] Such as figure 1 Shown, a kind of sludge harmless treatment method, it comprises the following steps:

[0031]1) Construction of a sludge incineration device, the sludge incineration device includes a sludge dehydration device 11, a mixing device 10, a drying device, a combustion device, a water circulation device 6 and a combustion barrel 5, and the sludge dehydration device 11 is provided with a dehydration outlet feed port and dehydration feed port, the mixing device 10 is provided with a mixing feed port and a mixing discharge port, the dehydration discharge port is connected with the mixing feed port, and the drying device includes a box body, an auger 9 and a driving device 8, the auger 9 is arranged in the box, the driving device 8 is connected with the auger 9 to drive the auger 9 to rotate, and one end of the box is provided with a box body The other end of the box is provided with a box outlet, and the box inlet is connected to the mixing outlet. The combusti...

Embodiment 3

[0036] Such as figure 1 Shown, a kind of sludge harmless treatment method, it comprises the following steps:

[0037] 1) Construction of a sludge incineration device, the sludge incineration device includes a sludge dehydration device 11, a mixing device 10, a drying device, a combustion device, a water circulation device 6 and a combustion barrel 5, and the sludge dehydration device 11 is provided with a dehydration outlet feed port and dehydration feed port, the mixing device 10 is provided with a mixing feed port and a mixing discharge port, the dehydration discharge port is connected with the mixing feed port, and the drying device includes a box body, an auger 9 and a driving device 8, the auger 9 is arranged in the box, the driving device 8 is connected with the auger 9 to drive the auger 9 to rotate, and one end of the box is provided with a box body The other end of the box is provided with a box outlet, and the box inlet is connected to the mixing outlet. The combust...

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Abstract

The invention provides a harmless sludge-treatment method, which comprises the following steps: 1) constructing a sludge incineration device, which comprises a sludge dewatering device, a mixing device, a drying device, a combustion device, a water circulation device and a combustion barrel; 2) transferring the sludge to the sludge dewatering device, performing rotary extrusion dewatering on the sludge to obtain dewatered sludge, sending the dewatered sludge to the mixing device through a dewatering discharge port, and adding straw dry matters to a straw feeding port provided on the mixing device to adjust the water content of the sludge so that the water content of the sludge is less than 50%, thus to obtain water-controlled sludge; and 3) starting a driving device to send the water-controlled sludge Into a combustion chamber, igniting the water-controlled sludge by a combustion barrel, shutting the combustion barrel after the water-controlled sludge is combusted, and activating an air blowing device and a water circulation device to continuously perform sludge incineration. The harmless sludge-treatment method has the characteristics of high sludge incineration efficiency and remarkable sludge reduction effect.

Description

technical field [0001] The invention belongs to the technical field of garbage incineration. More specifically, the invention relates to a method for harmless treatment of sludge. Background technique [0002] Sludge is a solid or semi-solid substance produced during sewage treatment. Sludge is rich in organic matter, pathogenic microorganisms, parasite eggs, toxic and harmful heavy metals, and a large number of microbial refractory substances. If it is not handled properly, it will easily cause secondary pollution to the environment. However, the moisture content of sludge produced by urban sewage treatment plants generally exceeds 75%-99%, which is extremely high, which hinders the development of sludge incineration treatment technology. Therefore, efficient incineration of sludge to make sludge harmless, reduce its volume, and turn it into a resource has become an urgent problem to be solved in environmental pollution control. Contents of the invention [0003] An ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00F23J15/02C02F11/13C02F11/121
Inventor 刘营营
Owner 刘营营
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