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A special desulfurizer and deodorization process for the deodorization process of food waste

A technology for kitchen waste and desulfurizer, which is applied in other chemical processes, separation methods, combustion types, etc., can solve the problem of lack of deodorization means, and achieve low operation and maintenance costs, no secondary pollution, and strong removal performance. Effect

Active Publication Date: 2018-12-25
SOUTHWEST RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter what treatment method is used, the garbage will emit a disgusting odor during the treatment process. At present, there is no effective deodorization method in the garbage treatment process.

Method used

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  • A special desulfurizer and deodorization process for the deodorization process of food waste
  • A special desulfurizer and deodorization process for the deodorization process of food waste
  • A special desulfurizer and deodorization process for the deodorization process of food waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]The treated sludge of urban domestic sewage is placed in the mixing tank, and chemical conditioning agents ferric chloride and quicklime are added thereto. In terms of mass percentage, the addition of the chemical conditioning agent accounts for 10% of the sludge amount, and the amount of quicklime is The amount added accounts for 30% of the chemical conditioner, and after stirring, it is sent to filter plate for dehydration, the water content in the sludge is reduced to 40% after dehydration, and it is moved to the kneading tank, and nitric acid accounting for 5% by mass is added to it Copper or copper chloride or basic copper carbonate (dry basis, calculated as oxides) is extruded by kneading method, dried at 80°C for 4 hours and roasted at 400°C for 3 hours under the protection of inert gas to make a special desulfurizer.

[0039] A gas collection hood is installed above the waste treatment facilities, and the odorous gas is sent to the adsorption desulfurization devic...

Embodiment 2

[0044] Put the river sludge in the mixing tank, add chemical conditioner polyferric sulfate and quicklime therein, in terms of mass percentage, the addition amount of the chemical conditioner accounts for 1% of the sludge amount, and the addition amount of the quicklime accounts for 1% of the chemical conditioner 50%, after being stirred, it is sent to filter plate for dehydration by pressure filtration. After dehydration, the water content in the sludge is reduced to 60%, and it is moved to a kneading tank, and 50% by mass percentage of ferric nitrate or ferric chloride or Ferric oxide (dry basis, calculated as oxides) is extruded by kneading method, dried at 120°C for 2 hours and roasted at 200°C for 5 hours under the protection of inert gas to make a special desulfurizer.

[0045] A gas collection hood is installed above the waste treatment facilities, and the odorous gas is sent to the adsorption desulfurization device equipped with the special desulfurizer prepared above t...

Embodiment 3

[0050] The pond sludge is placed in the mixing tank, and the chemical conditioning agent polyaluminum ferric chloride and quicklime are added thereto. In terms of mass percentage, the addition of the chemical conditioning agent accounts for 5% of the sludge amount, and the addition of the quicklime accounts for 5% of the amount of the chemical conditioning. 40% of the agent, after being stirred, it is sent to filter plate for dehydration by pressure filtration. After dehydration, the water content in the sludge is reduced to 50%. It is moved to the kneading tank, and 40% by mass of manganese carbonate or manganese nitrate or manganese nitrate is added thereto. Ferromanganese ore powder (dry basis, calculated as oxides) is extruded by kneading method, dried at 100°C for 3 hours and roasted at 300°C for 4 hours under the protection of inert gas to make a special desulfurizer.

[0051] A gas collection hood is installed above the waste treatment facilities, and the odorous gas is ...

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Abstract

The invention relates to a special desulfurizing agent for a kitchen waste deodorization process and belongs to the technical field of garbage disposal. The special desulfurizing agent disclosed by the invention is prepared by the steps: taking activated sludge as a carrier, taking compounds of copper, iron or manganese as active ingredients, performing extrusion molding by adopting a mixing kneading method, drying at the temperature of 80-120 DEG C under inert gas shielding, and calcining at the temperature of 200-400 DEG C, thereby obtaining the product. The invention further relates to a deodorization process of the special desulfurizing agent used for the kitchen waste treatment process. The process comprises the steps of collecting bad smell, performing selective adsorption on odor components, and performing catalytic combustion. The special desulfurizing agent disclosed by the invention is capable of simultaneously removing multiple sulfides and is high in organic sulfur adsorption and removal performance and high in sulfur capacity. According to the deodorization process disclosed by the invention, odor is completely treated, complete up-to-standard release is achieved, secondary pollution is avoided, and wastewater is not produced; the process is high in load fluctuation resistance, low in operation and maintenance cost and easy in re-operation start-up. The process disclosed by the invention is capable of effectively removing odor diffusing in the kitchen waste treatment process, is wide in application range and is a clean and low-consumption deodorization process.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a special desulfurizer and a deodorization process for the deodorization process of kitchen waste. Background technique [0002] According to the national standard, all gaseous substances that stimulate the olfactory organs to make people feel unpleasant and damage the living environment are collectively referred to as stench. Odor is widely produced in industrial wastewater, agricultural production, municipal sewage, sludge treatment and garbage disposal. With the continuous expansion of the urban area, the treatment facilities that were built far away from the urban area in the past are getting closer to the new urban area, closer to the places where people work and live, and more and more people are troubled by stench. [0003] There are many kinds of malodorous substances, which can be divided into five categories according to their composition. The mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30B01D53/02F23G7/07
CPCB01D53/02B01D2257/304B01D2257/306B01J20/24F23G7/07
Inventor 陈耀壮王磊欧阳李科李洁乔莎张云贤
Owner SOUTHWEST RES & DESIGN INST OF CHEM IND
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