A resource utilization method of landfill leachate

A landfill leachate recycling technology, which is applied in the field of landfill leachate resource utilization, can solve the problems that pellets are difficult to meet, and achieve the effect of realizing secondary economic value, simple method, and feasible operation

Active Publication Date: 2020-05-05
鸿灌环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the following problems in the prior art: that is, due to the defects in the components of the landfill leachate itself, the binder prepared from the landfill leachate cannot endow the pellets with high strength and temperature resistance, and the prepared pellets Mine is difficult to meet the 5000m 3 The high standard requirements of the above blast furnace

Method used

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  • A resource utilization method of landfill leachate
  • A resource utilization method of landfill leachate
  • A resource utilization method of landfill leachate

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A resource utilization method of landfill leachate, mixing and mixing the landfill leachate concentrate with a solid content of 30% and sodium hydroxide solution, stirring and reacting in a water bath at 80°C, and then cooling the solution , the modified landfill leachate can be obtained, and the prepared modified landfill leachate is mixed with cement and modified dolomite in proportion, and after spray drying, the composite iron ore pellet sticky binder; the prepared composite iron ore pellet binder is added to the iron ore concentrate by 3% of the iron concentrate mass to prepare iron ore pellets.

[0032] Wherein, the mixed mass parts of the modified landfill leachate, cement and modified dolomite are: 40 parts of modified landfill leachate, 25 parts of cement, and 10 parts of modified dolomite.

[0033] Wherein, the modified dolomite is prepared by the following method:

[0034] S1 grinds dolomite to 400 mesh to obtain dolomite powder;

[0035] S2 Weigh a certain...

Embodiment 2

[0042] A resource utilization method of landfill leachate, mixing and mixing the landfill leachate concentrate with a solid content of 35% and sodium hydroxide solution, stirring and reacting in a water bath at 85°C, and then cooling the solution , the modified landfill leachate can be obtained, and the prepared modified landfill leachate is mixed with cement and modified dolomite in proportion, and after spray drying, the composite iron ore pellet sticky binder; the prepared composite iron ore pellet binder is added to the iron ore concentrate by 3% of the iron concentrate mass to prepare iron ore pellets.

[0043] Wherein, the mixed mass parts of the modified landfill leachate, cement and modified dolomite are: 45 parts of modified landfill leachate, 28 parts of cement, and 13 parts of modified dolomite.

[0044] Wherein, the modified dolomite is prepared by the following method:

[0045] S1 grinds dolomite to 500 mesh to obtain dolomite powder;

[0046] S2 Weigh a certain...

Embodiment 3

[0053] A resource utilization method of landfill leachate, mixing and mixing the landfill leachate concentrate with a solid content of 40% and sodium hydroxide solution, stirring and reacting in a water bath at 90°C, and then cooling the solution , the modified landfill leachate can be obtained, and the prepared modified landfill leachate is mixed with cement and modified dolomite in proportion, and after spray drying, the composite iron ore pellet sticky binder; the prepared composite iron ore pellet binder is added to the iron ore concentrate by 3% of the iron concentrate mass to prepare iron ore pellets.

[0054] Wherein, the mixed mass parts of the modified landfill leachate, cement and modified dolomite are: 50 parts of modified landfill leachate, 30 parts of cement, and 15 parts of modified dolomite.

[0055] Wherein, the modified dolomite is prepared by the following method:

[0056] S1 grinds dolomite to 600 mesh to obtain dolomite powder;

[0057] S2 Weigh a certain...

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Abstract

The invention relates to a recycling utilization method of landfill leachate. The method comprises the following steps that a landfill leachate concentrated solution with solid content of 30%-40% is evenly mixed with a sodium hydroxide solution and stirred to react under the water bath condition of 80-90 DEG C, and after the solution is cooled, modified landfill leachate is obtained; and the modified landfill leachate is evenly mixed with cement and modified dolomite in proportion, and after spray drying, a compound iron ore pellet binder is obtained. According to the recycling utilization method of the landfill leachate, the method is simple and available to operate. Recycling utilization of waste resources can be achieved, secondary economic value of the waste resources can also be realized, and great significance for sustainable development and utilization of energy can be brought.

Description

technical field [0001] The invention relates to a resource utilization method of landfill leachate. Background technique [0002] Since the new century, with the rapid development of China's economy, my country's industrial level and people's living standards have been greatly improved. People's daily life garbage and industrial garbage have also increased rapidly, resulting in more and more types and quantities of waste. Therefore, it is very important to carry out an effective disposal of garbage. According to the "2015 Environmental Statistical Annual Report" of the Ministry of Environmental Protection of my country, in 2015, there were 2,315 domestic waste treatment plants (fields) nationwide, and a total of 248 million tons of domestic waste were processed throughout the year. The main methods of waste disposal are landfill, composting and incineration. Among them, 178 million tons of domestic waste were disposed of by landfill, 4 million tons by composting, and 66 mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/242
CPCC22B1/242Y02P10/20
Inventor 姚清其他发明人请求不公开姓名
Owner 鸿灌环境技术有限公司
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