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Modification method for energy utilization of sludge or organic waste

An organic waste, energy-based technology, applied in combustion methods, incinerators, combustion types, etc., to achieve the effect of eliminating biological pollution, saving fossil energy, and reducing emissions

Active Publication Date: 2019-01-11
湖南省小尹无忌环境能源科技开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the fuel performance of sludge or organic waste by changing the combustion performance of muddy organic matter and high internal water (bacteria group) organic matter in sludge or organic waste, so as to solve the problem of sludge or organic waste energy. The Dilemma of Chemical Utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]The original sludge of a municipal sewage treatment plant with a water content of 89.7% was selected for energy utilization modification test. The original sludge has a peculiar smell; the modified and adjusted oxidizing and nitrating agent is (powdered) oxidizing A nitrating agent, wherein the strong oxidizing agent is sodium ferrate, the nitrate is lithium nitrate, and the mass ratio of sodium perchlorate to lithium nitrate is 40:60.

[0034] Under continuous stirring, add 0.8% of the oxidizing and nitrating agent to the original sludge, and continue stirring for 15 minutes in the stirring aging method to modify the characteristics of organic matter in the sludge to obtain modified sludge, and the odor disappears. Sprinkle the modified sludge on the raw coal according to 20% of the raw coal quality, then mix, dry, and grind to make a modified sludge coal powder mixed fuel sample A with 3% of the 80um sieve remaining.

[0035] Take the unmodified sludge and spread it on...

Embodiment 2

[0038] The dewatered sludge (moisture content 80.7%) of a municipal sewage treatment plant was selected for energy utilization modification test. The sludge has a peculiar smell; A nitrating agent, wherein the strong oxidizing agent is high vanadium mixed heteropolyacid potassium, the nitrate is potassium nitrate, and the mass ratio of high vanadium mixed heteropolyacid potassium to potassium nitrate is 50:50.

[0039] Under continuous stirring, add 0.7% of the oxidizing and nitrating agent to the dewatered sludge and stir evenly, and age for 30 minutes to modify the organic matter properties in the sludge to obtain modified sludge without odor; The permanent sludge was spread on the raw coal according to 10% of the mass of the raw coal, and then mixed, dried, and ground to make a modified sludge-coal mixed fuel sample B with an 80um sieve of 2.7%.

[0040] Take the unmodified sludge and spread it on the raw coal according to 10% of the mass of the raw coal, then mix, dry and ...

Embodiment 3

[0043] The deep dewatered sludge (water content 57.8%) of a municipal sewage treatment plant was selected for energy utilization modification test. The dewatered sludge is lumpy and has peculiar smell; (liquid) oxidative nitrating agent, wherein the strong oxidant is potassium ferrate, the nitrate is lanthanum nitrate, and the mass ratio of potassium ferrate to lanthanum nitrate is 50:50.

[0044] Disperse the lumpy sludge, add oxidizing and nitrating agent accounting for 1% of the mass of the sludge into the bulk sludge, stir evenly, and age for 30 minutes to modify the characteristics of organic matter in the sludge to obtain modified sludge without peculiar smell ; Naturally dried for 3 days to obtain a modified sludge fuel sample C with a moisture content of 18.1%.

[0045] Take the unmodified sludge and dry it to the sludge fuel sample C' with a water content of 18%.

[0046] Under laboratory conditions, the comparison test of sludge fuel sample C and C' showed that the ...

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Abstract

The invention provides a modification method for energy utilization of sludge or organic waste. The method comprises the steps that the sludge or the organic waste and an oxidation nitration agent or a catalytic oxidation combustion improver are mixed and aged; or the sludge / organic waste, fire coal and the oxidation nitration agent / catalytic oxidation combustion improver are mixed and subjected to powder grinding, oxidation nitration modification / catalytic oxidation combustion improving modification is conducted on the sludge or the organic waste, and accordingly the combustion performance of the sludge / organic waste is improved. The oxidation nitration agent means the matter which can improve the combustion performance of argillation organic matter and high-internal-water cenobium organic matter in the sludge. The catalytic oxidation combustion improver means the matter which can improve the combustion performance of carbon or hydrocarbon. According to the modification method, by improving the combustion performance of the argillation organic matter and the high-internal-water cenobium organic matter in the sludge / organic waste, the combustion performance of the sludge / organic waste is improved, and accordingly the energy utilization of the sludge / organic waste is achieved.

Description

technical field [0001] The invention relates to the field of environmental protection energy, in particular to a modification method for energy utilization of sludge or organic waste. Background technique [0002] With the acceleration of urbanization in my country, the output of municipal sewage and sludge has increased dramatically. In 2006, my country's urban domestic sewage discharge was 29.66 billion tons. By 2012, the domestic sewage discharge had reached 46.27 billion tons, with an average annual compound growth rate of 7.69%. [0003] As of the beginning of 2015, a total of 3,892 municipal sewage treatment plants have been built in cities and counties across the country, with a sewage treatment capacity of about 176 million cubic meters per day, and their municipal sludge output has exceeded 30 million tons. [0004] Municipal sewage treatment plants produce municipal sludge with a large amount of pollutants in the process of treating urban domestic sewage and indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/00
CPCF23G7/001
Inventor 尹无忌郭学益尹小林
Owner 湖南省小尹无忌环境能源科技开发有限公司
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