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A method of adding sulfur element to sludge fuel to treat heavy metals

A heavy metal and sulfur addition technology, which is applied in sludge treatment, water/sludge/sewage treatment, fuel, etc., can solve problems such as soil fertility decline, heavy metals that have not been harmlessly treated, and soil compaction, and achieves an extremely easy to handle Effect

Active Publication Date: 2022-04-19
王力民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] ③Retention of heavy metals in the soil will cause soil compaction, resulting in a decline in soil fertility
However, as a result, the heavy metals in the sludge did not achieve harmless treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention provides a technical solution: a method for adding sulfur element to sludge fuel to treat heavy metals, comprising the following steps:

[0031] S1, mixing sulfur powder and heavy fuel oil in a container at a weight ratio of 1:10;

[0032] S2, mixing the mixture prepared in step S1 with fuel heavy oil in the container according to the ratio in step S1;

[0033] S3, mixing the mixture prepared in step S2 and fuel heavy oil in the container according to the ratio in step S1;

[0034] S4, the mixture prepared by the above steps is subjected to circular grinding, pulverization, and homogenization so that the sulfur powder in the mixture is uniform and distributed in the mixture with a particle size of 1um;

[0035] S5, process the mixture prepared in the above steps with heavy oil and domestic sludge through a rotating pulsating ultrafine particle powder dissolving machine to obtain sludge fuel, mix the mixture with heavy oil and domestic sludge in a containe...

Embodiment 2

[0040] The invention provides a technical solution: a method for adding sulfur element to sludge fuel to treat heavy metals, comprising the following steps:

[0041] S1, mixing sulfur powder and heavy fuel oil in a container at a weight ratio of 1:10;

[0042] S2, mixing the mixture prepared in step S1 with fuel heavy oil in the container according to the ratio in step S1;

[0043] S3, mixing the mixture prepared in step S2 and fuel heavy oil in the container according to the ratio in step S1;

[0044] S4, the mixture obtained in the above steps is subjected to circular grinding, pulverization, and homogenization so that the sulfur powder in the mixture is uniform and distributed in the mixture with a particle size of 2um;

[0045] S5, process the mixture prepared in the above steps with heavy oil and domestic sludge through a rotating pulsating ultrafine particle dissolving machine to obtain sludge fuel, and add the mixture, heavy oil and domestic sludge to the rotating puls...

Embodiment 3

[0050] The invention provides a technical solution: a method for adding sulfur element to sludge fuel to treat heavy metals, comprising the following steps:

[0051] S1, mixing sulfur powder and heavy fuel oil in a container at a weight ratio of 1:10;

[0052] S2, mixing the mixture prepared in step S1 with fuel heavy oil in the container according to the ratio in step S1;

[0053] S3, mixing the mixture prepared in step S2 and fuel heavy oil in the container according to the ratio in step S1;

[0054] S4, the mixture obtained in the above steps is subjected to circular grinding, pulverization, and homogenization so that the sulfur powder in the mixture is uniform and distributed in the mixture with a particle size of 3um;

[0055] S5, process the mixture prepared in the above steps with heavy oil and domestic sludge through a rotating pulsating ultrafine particle dissolving machine to obtain sludge fuel, and add the mixture, heavy oil and domestic sludge to the rotating puls...

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Abstract

The invention discloses a method for adding sulfur element to sludge fuel to treat heavy metals, comprising the following steps: S1, mixing sulfur powder and fuel heavy oil in a container according to a certain weight ratio; S2, mixing the mixture prepared in step S1 Mixing with heavy fuel oil in the container according to the ratio in step S1; S3, mixing the mixture prepared in step S2 with heavy fuel oil in the container according to the ratio in step S1. In the present invention, after ultra-fine mixing of sulfur powder and fuel heavy oil, and then adding it into sludge fuel according to the corresponding proportion, the sulfur powder is distributed in the sludge fuel with a very small particle size and extremely uniform, so that the sludge The heavy metals in mud are converted into heavy metal sulfides through the reaction of fuel combustion sulfur and heavy metals. The heavy metal sulfides are recovered through the dust removal equipment, because the heavy metal sulfides are very stable and easy to handle. Thus the purpose of harmless treatment of heavy metals in sludge is achieved.

Description

technical field [0001] The invention relates to the technical field of new energy for environmental protection and waste resource utilization, in particular to a method for treating heavy metals by adding sulfur element into sludge fuel. Background technique [0002] The urbanization process of the country is further accelerating, and the pollution of urban domestic sewage and industrial wastewater to the environment is becoming more and more serious. In order to reduce the pressure of water pollution, large, medium and small cities across the country have built a large number of sewage treatment plants. The sludge produced in the sewage treatment process has increased significantly. Sludge is rich in N, P, K and trace elements needed by plants. However, sludge also contains heavy metals that are harmful to humans and animals. Unlike other pollutants, heavy metals cannot be degraded by microorganisms and are easily absorbed by crops once they enter the soil. Moreover, it w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C10L5/46C02F101/20
CPCC10L5/46C02F11/00C02F2101/20Y02E50/30Y02E50/10
Inventor 王力民王麒瑜王振雷王振宇
Owner 王力民