Sludge drying processing method and equipment

A sludge drying and treatment method technology, which is applied in the directions of oxidation treatment sludge, dehydration/drying/concentrated sludge treatment, by-product vaporization, etc., can solve the problem of low output of belt dryer, low sludge drying rate, moisture Difficult to transfer and other problems, to achieve the effect of promoting the industrialization process, fast heating speed, and low power consumption

Inactive Publication Date: 2010-05-19
TIANJIN TEDA ENVIRONMENTAL PROTECTION
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Problems solved by technology

Because the sewage sludge is very sticky, the traditional belt dryer can only spread one layer of mud strings on the wire mesh and the sludge strings must keep a large distance, resulting in low output of the belt dryer and hot air at the same time. The heat is discharged without being fully utilized, wasting a lot of heat source
In addition, there is a special adh...

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  • Sludge drying processing method and equipment
  • Sludge drying processing method and equipment
  • Sludge drying processing method and equipment

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Embodiment Construction

[0020] In order to further understand the invention content, characteristics and effects of the present invention, the following embodiments are enumerated hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0021] see figure 1 , the present invention is a sludge drying treatment method. The specific process is to firstly mix the sludge after press filtration in a sewage plant with a small amount of combustible powder. The combustible powder is sawdust, coal powder, coal gangue powder and straw powder. Any one, its mass ratio to the sludge is 1:20~1:5, after mixing, the sludge is extruded into a mud string with a diameter of 3~10mm by a mud stringer, and the mud string is in the process of falling, using far-infrared The lamp is irradiated without shadow, and the outer surface of the mud string is quickly dried under the powerful heat radiation of the infrared lamp and forms a layer of soft shell. The sludge string with soft shell ...

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Abstract

The invention discloses a sludge drying processing method; firstly, the filter-pressed sludge and combustible material are mixed, the mixed sludge is extruded into sludge string by a sludge string extrusion machine at the top part of a pre-baking tank, in the dropping process of the sludge string, an infrared lamp on the inner wall of the pre-baking tank is used for shadowless irradiation, and a layer of soft shell is formed at the outer surface of the sludge string after the heat is adsorbed; the invention further discloses equipment for realizing the method; the equipment solves the problems that the traditional belt drier has short distance of the sludge strings, so as to cause caking, and the distance is long, the unit treatment capacity is low, hot air heat is hard to be utilized effectively and the drying speed is low; the equipment is particularly suitable for sludge dry treatment for sludge incineration; the invention can promote the industrialization progress of the sludge drying incineration.

Description

technical field [0001] The invention relates to a sludge treatment method, in particular to a sludge drying treatment method. The invention also relates to a device for realizing the sludge drying treatment method. Background technique [0002] The incineration treatment of sewage plant sludge can make full use of the characteristics of sludge containing a large amount of combustible substances, and the treated sludge can be used as fuel. However, the water content of the sludge produced by the sewage plant is still as high as 70% to 80% after mechanical dehydration, so it cannot be used for direct incineration. Sludge must be effectively dried before it can be used for incineration. [0003] The belt dryer is favored for its advantages of good air permeability, adjustable residence time, no violent movement of materials, and high drying intensity. Air is supplied vertically to the conveying mesh belt, passes through several layers of sludge-carrying mesh belts, and conta...

Claims

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Application Information

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IPC IPC(8): C02F11/16C02F11/06
CPCY02W10/40
Inventor 刘汉桥张曙光高建东孟宝生郝永俊韩檬
Owner TIANJIN TEDA ENVIRONMENTAL PROTECTION
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