Sludge drying and incinerating treatment process

A sludge drying and treatment method technology, applied in the direction of oxidation treatment of sludge, by-product vaporization, etc., can solve the problems of multiple harmful substances, polluting the environment, complex processes, etc., and achieve good safety, high heat utilization rate, and system structure simple effect

Inactive Publication Date: 2007-03-21
BEIJING CHINA SCI GENERAL ENERGY & ENVIRONMENT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] An object of the present invention is to solve above-mentioned prior art sludge without dehydration and drying process, directly send in the fluidized bed incinerator and carry out incineration, must have auxiliary fuel, as coal, waste resources, and produce in the incineration process More waste residue and waste gas, and due to the presence of moisture, react with the chemical components in the waste residue and waste gas to produce more harmful substances, which are highly corrosive, corrode equipment, and require a very complicated purification process, otherwise they will be discharged It is easy to pollute the environment after the end, and a sludge drying and incineration treatment method is provided

Method used

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  • Sludge drying and incinerating treatment process
  • Sludge drying and incinerating treatment process

Examples

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Embodiment 1

[0050] Fig. 1 is a schematic diagram of the process of the present invention. The sludge with a water content of about 95% from the sewage treatment plant and the sludge slurry sedimentation tank is first heated to 50°C, and then sent to the mechanical dehydration device A for preliminary mechanical dehydration to reduce the water content to 80% to 65%. After preliminary dehydration, the sludge is sent to the mechanical granulation device B for mechanical extrusion granulation to form columnar particles with a diameter and height of about 1-3 cm or spherical particles with a diameter of 1-3 cm. The granulated sludge is mixed with the dried sludge fine powder separated by the gas-solid separator E located at the outlet of the fluidized bed sludge drying device D, and sent to the drum mixer C for mixing and stirring to make the sludge dry The sludge fine powder adheres to the surface of wet sludge particles. The sludge particles coming out of the drum agitator C then enter the...

Embodiment 2

[0055] Wet sludge temperature (step 1)

Embodiment 3

[0057] Wet sludge temperature (step 1)

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Abstract

The present invention relates to environmental protection engineering technology, and is especially sludge drying and incinerating treatment process. The present invention has effective utilization of heat energy, no exhaust of harmful gas and bad smell, no exhaust of dangerous clinker, simple structure and high burning efficiency of the sludge incinerating system, no need of auxiliary fuel and other advantages.

Description

technical field [0001] The invention relates to the field of environmental protection engineering, in particular to a sludge drying and incineration treatment method. Background technique [0002] With the development of my country's social economy and the continuous expansion of urban population, the discharge of industrial wastewater and domestic sewage is increasing, and the output of sludge, a by-product of urban sewage treatment, is also increasing rapidly. Sludge is a kind of flocculent mud particles with high water content produced in the process of sewage treatment. It is actually an aggregate formed by suspended solids in sewage, microorganisms, organic matter adsorbed by microorganisms, and products of microbial metabolic activities. Sludge is often rich in nutrients such as nitrogen and phosphorus. However, untreated sludge also contains heavy metals, pathogenic bacteria, parasites, and some refractory organic poisons. If it is not handled properly! After dischar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/06
CPCY02W10/40
Inventor 蒋宏利姜鸿安燕桂章鲁光明潘忠刚朱珂金坚
Owner BEIJING CHINA SCI GENERAL ENERGY & ENVIRONMENT CO LTD
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