Sludge resource utilization system and method

A recycling and sludge technology, applied in combustion methods, incinerators, lighting and heating equipment, etc., can solve a large number of problems such as high cost of flue gas purification, high fuel cost, and large flue gas volume, so as to increase biogas production and power generation, low organic matter content, and high organic matter decomposition rate

Active Publication Date: 2014-11-19
凤阳县经济发展投资有限公司
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AI Technical Summary

Problems solved by technology

However, sludge incineration treatment needs to consume high-quality energy such as coal, and the cost of fuel is relatively high.
In addition, wet sludge contains a lot of water, which enters into the flue gas after incineration, and the amount of flue gas generated by direct incineration is large, and the purification treatment cost of a large amount of flue gas is high

Method used

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  • Sludge resource utilization system and method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with embodiment.

[0034] see figure 1 , a sludge resource utilization system, including a preprocessor 22 for decomposition of sludge organic matter, the preprocessor 22 is a sludge cell wall breaking device, and the specific method used is high temperature thermal hydrolysis, microwave thermal hydrolysis or Ultrasonic thermal hydrolysis, a sludge pump 1 is installed at the sludge inlet of the preprocessor 22, a pH meter 21 is arranged on the preprocessor 22, a metering device 4 is arranged at the fly ash inlet of the preprocessor 22, and the pretreatment The outlet of the device 22 is connected with the anaerobic fermentation tank 3, the biogas outlet of the anaerobic fermentation tank 3 is connected with the biogas tank 19, the sludge outlet of the anaerobic fermentation tank 3 is connected with the dehydrator 5 and the drier 6 in turn, and the sewage of the drier 6 The mud outlet is connected to t...

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Abstract

The invention relates to a sludge resource utilization system and method. Surplus calcium oxide is used as agents of a whole sludge treatment process. The system and method have the advantages of being harmless and stable in sludge processing, reduction is achieved, reutilization is achieved, desulfurizing agent consumption is small, and the reutilization rate is high. According to the technical scheme, the system comprises a preprocessor for sludge organic matter decomposing, an outlet of the preprocessor is communicated with an anaerobic fermentation tank, a methane outlet of the anaerobic fermentation tank is connected with a methane tank, a sludge outlet of the anaerobic fermentation tank is connected with a dehydrator and a dryer in sequence, a sludge outlet of the dryer and an inlet of an incinerator are communicated, a smoke outlet of the incinerator is connected with a dust collector, a flying ash outlet of the dust collector is divided into two ways which are connected with a flying ash inlet of the preprocessor and an ash storeroom respectively, an outlet of the methane tank is communicated with an electricity generating fuel machine, a smoke outlet of the fuel machine is connected with a waste heat boiler, and the incinerator and the waste heat boiler provide heat for the dryer through heat supplying pipes.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge resource utilization system and method. Background technique [0002] (1) Sludge production and its hazards [0003] With the rapid advancement of urbanization, China's sewage treatment industry has developed rapidly, the sewage treatment capacity and treatment rate have increased rapidly, and the output of sewage sludge has increased rapidly. By the end of 2010, the treatment capacity of China's urban domestic sewage facilities had reached 125 million cubic meters per day, the sewage treatment rate of cities with cities had reached 77.5%, and the contribution rate of chemical oxygen demand (COD) pollution emission reduction accounted for the most in China's "Eleventh Five-Year Plan" During this period, more than 70% of the total national COD reduction was added. With the rapid increase of sewage treatment volume, China's sludge production has also increased sharply, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00
CPCY02E20/12
Inventor 李志伟钱瑞林何秀锦
Owner 凤阳县经济发展投资有限公司
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