Desulfurization-high temperature biological deodorization method for foul smell waste gas produced by sludge treatment

A sludge disposal and odor technology, applied in separation methods, chemical instruments and methods, air quality improvement and other directions, can solve problems such as odor disturbing people, and achieve the effects of no investment and operation cost, low investment and operation cost, and easy operation.

Inactive Publication Date: 2011-02-02
SUN YAT SEN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Desulfurization-biological deodorization technology has multiple functions. One system solves the discharge of pollutants such as odor, sulfur dioxide, nitrogen oxides and other pollutants in sludge disposal...

Method used

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Examples

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Effect test

Embodiment 1

[0014] Example 1: Biological treatment of sludge disposal and drying of malodorous waste gas

[0015] Ammonia, hydrogen sulfide, methyl mercaptan (CH 3 SH), HCl, SO 2 , NO x and other complex inorganic and organic odorous gases, which are characterized by: complex composition, sulfur dioxide (SO 2 ) concentration is higher (1500mg / m 3 ), nitrogen oxides (NO x ) concentration is higher (500 ~ 700mg / m 3 ), the odor concentration is 4170, the exhaust gas oxygen content is low (<5%), the exhaust gas temperature is high (110°C), and the odor concentration is high. Wet desulfurization - high temperature biological treatment sludge treatment and drying odorous waste gas demonstration project long-term operation stability investigation, during which it showed good operation stability, biological deodorization can be stabilized at 90%, and desulfurization efficiency can reach more than 98% , The denitrification efficiency can reach 60%.

Embodiment 2

[0016] Example Two: Biological Treatment of Sludge Disposal of Incineration Odor Waste Gas

[0017] According to sludge drying and incineration, malodorous waste gas is produced, and its components include sulfur dioxide, nitrogen oxides, particulate matter, acid gas (HCl, HF), malodorous organic matter and heavy metal smoke. The malodorous exhaust gas is treated by wet desulfurization-high temperature biological method, the biological deodorization efficiency can be stabilized at 90%, the desulfurization efficiency can reach more than 95%, and the denitrification efficiency can reach 50%.

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PUM

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Abstract

The invention relates to a desulfurization-high temperature biological deodorization method for foul smell waste gas produced by sludge treatment. The method is a novel technical method assorted with cyclic economy and comprehensive utilization of a sludge resource. The foul smell waste gas is treated by a process which combines wet desulphurization with biological treatment and the wet desulphurization and temperature lowering are performed to construct a high-temperature and high-efficiency biological bacterial community micro-ecosystem for treating the foul smell waste gas into a nontoxic and harmless substance by continuous aerobic degradation. The method plays an important role in eliminating the technical bottlenecks of the disturbance of the foul smell waste gas produced in a waste heat drying/burning process during the sludge treatment and the application of the sludge treatment, facilitating the technical popularization of sludge drying and sludge burning during waste heat treatment and achieving extremely significant environmental benefit and social benefit. A desulphurization-biological treatment system can realize up-to-standard emission of pollutants such as foul smell drying/burning waste gas, sulfur dioxide, nitrogen oxide and the like produced by the sludge treatment, has the advantages of high waste gas purification efficiency, high device running stability, low running cost, no secondary pollution and the like and is simple and convenient to operate.

Description

technical field [0001] The invention relates to a desulfurization-high-temperature biological deodorization method for sludge treatment of malodorous waste gas, which belongs to the technical field of environmental protection. technical background [0002] Sludge has become one of the important environmental problems affecting the development of cities in our country. The treatment and disposal of sludge from urban sewage treatment plants has attracted great attention in the industry, and it is also a challenge faced by all countries in the world. In 2008, my country put into operation 1,529 urban sewage treatment plants, with a treated sewage volume of 23.3 billion m 3 Compared with the initial period of the "Tenth Five-Year Plan", the amount is about doubled, and about 16 million tons of sludge with a moisture content of 80% are produced, and the annual growth rate is more than 10%. [0003] At present, sludge disposal mainly adopts sanitary landfill, composting, drying,...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D53/75B01D53/84B01D53/80
CPCY02A50/20
Inventor 魏在山孙建良
Owner SUN YAT SEN UNIV
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