Water-containing sludge treatment method

A treatment method and water sludge technology, applied in dehydration/drying/thickening sludge treatment, combustion methods, lighting and heating equipment, etc., can solve the serious problems of sludge harmless treatment and secondary pollution

Inactive Publication Date: 2013-01-23
张开晓
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  • Application Information

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Problems solved by technology

However, the treatment of urban sewage sludge is still a worldwide technical problem. Improper disposal will cause serious secondary pollution, and the problem of harmless treatment of sludge is becoming increasingly serious.

Method used

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment, further elaborate the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0026] Such as figure 1 and figure 2 Shown, the aqueous sludge treatment method comprises the following steps:

[0027] Step 1: Send the sludge in the wet sludge bin 1 to the sludge dryer 3 through the sludge pump 2, and the sludge dryer 3 uses steam or heat transfer oil as the heating medium to indirectly heat the sludge, and the sludge The mud dryer 3 is a disc dryer, and the moisture content of the dried semi-drie...

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Abstract

The invention discloses a water-containing sludge treatment method which comprises the following steps of: conveying sludge into a sludge drying machine, heating and drying; conveying semi-dry sludge into a sludge incinerator; introducing air into the sludge incinerator after passing through an ignition device; enabling high-temperature smoke generated by incinerating sludge to pass through a waste heat recycling device, and then discharging the high-temperature smoke to the air through a smoke purifying and dust-removing system; and conveying residues generated by incinerating the sludge to an ash storage bunker. The semi-dry incineration of the sludge adopts the mode that the sludge directly passes through the sludge drying machine to reach a low-dryness and semi-dry degree and then enters the incinerator for being incinerated; and in the drying process, no full-dry sludge is generated, and the back-mixing operation is not needed. The water-containing sludge treatment method has the advantages that developed and reliable sludge drying and incineration devices are adopted, thus a system has high operation reliability; the dry sludge back-mixing operation is not needed for a semi-drying system, thus the dust quantity is low and the oxygen content and temperature are low during operation, the system is high in safety, and inert gas protection is not needed; and the whole system does not generate dust and odor during operation, and is environmental-friendly.

Description

technical field [0001] The invention relates to a sludge treatment method. Background technique [0002] With the development of our country's social economy and cities, the amount of urban sewage production continues to increase. In recent years, the state has actively supported it in terms of policy and financial resources, and built a large number of urban sewage treatment plants to maintain the water environment. However, the treatment of urban sewage sludge is still a worldwide technical problem. Improper disposal will cause serious secondary pollution, and the problem of harmless treatment of sludge is becoming increasingly serious. [0003] At present, the commonly used sludge disposal technologies in the world are land use, landfill and incineration. Due to the shortage of land resources and other environmental pollution problems, especially in large cities, the proportion of sludge land use and landfill has gradually decreased, while the proportion of incineration...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12F23G7/00
Inventor 张开晓
Owner 张开晓
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