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Method for carbonizing surface of sludge compost wood conditioner

A surface carbonization and conditioning agent technology, which is applied in carbon preparation/purification, fertilization equipment, microbial treatment, etc., can solve the problems of oxygen consumption and wood conditioner easy to decompose, so as to increase porosity, reduce adverse effects, increase The effect of water absorption

Inactive Publication Date: 2021-02-12
GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a method for carbonizing the surface of sludge composting wood conditioner to solve the problem that wood conditioner itself is easy to decompose and consume extra oxygen during the composting process

Method used

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  • Method for carbonizing surface of sludge compost wood conditioner
  • Method for carbonizing surface of sludge compost wood conditioner
  • Method for carbonizing surface of sludge compost wood conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: a kind of method of sludge composting wood conditioner surface carbonization, comprises the following steps:

[0023] (1) Pretreatment: configure a sodium hydroxide solution with a mass fraction of 12%, put the sodium hydroxide solution into a heatable airtight container, heat the sodium hydroxide solution to 90°C, and then completely soak the wood conditioner in Sodium hydroxide solution, soaking time is 110min;

[0024] (2) Primary drying treatment: put the wood conditioner treated in step (1) into a drying kiln, and dry the water content of the wood conditioner to 20% under a temperature environment of 70°C for subsequent use;

[0025] (3) Secondary drying treatment: the wood conditioner after step (2) is processed to continue to be dried, and the temperature in the drying kiln is kept at 130° C., and the wood conditioner is applied to the ultrasonic wave with a frequency of 60KHz to process, until the water content of the wood conditioner is dried to ...

Embodiment 2

[0028] Embodiment 2: a kind of method of sludge composting wood conditioner surface carbonization, comprises the following steps:

[0029] (1) Pretreatment: configure a sodium hydroxide solution with a mass fraction of 15%, put the sodium hydroxide solution into a heatable airtight container, heat the sodium hydroxide solution to 95°C, and then completely soak the wood conditioner in Sodium hydroxide solution, soaking time is 120min;

[0030] (2) Primary drying treatment: put the wood conditioner treated in step (1) into a drying kiln, and dry the water content of the wood conditioner to 24% under a temperature environment of 75° C. for later use;

[0031] (3) Secondary drying treatment: the wood conditioner after step (2) is processed to continue to be dried, and the temperature in the drying kiln is kept to be 150° C. at the same time, and the wood conditioner is applied to the wood conditioner with an ultrasonic frequency of 65KHz. until the water content of the wood condi...

Embodiment 3

[0034] Embodiment 3: a kind of method of sludge composting wood conditioner surface carbonization, comprises the following steps:

[0035] (1) Pretreatment: configure a sodium hydroxide solution with a mass fraction of 13%, put the sodium hydroxide solution into a heatable airtight container, heat the sodium hydroxide solution to 93°C, and then completely soak the wood conditioner in Sodium hydroxide solution, soaking time is 115min;

[0036] (2) Primary drying treatment: put the wood conditioner treated in step (1) into a drying kiln, and dry the water content of the wood conditioner to 22% under a temperature environment of 73°C for subsequent use;

[0037] (3) Secondary drying treatment: the wood conditioner after step (2) is processed to continue to be dried, and the temperature in the drying kiln is kept to be 140° C. at the same time, and the wood conditioner is applied to the ultrasonic wave with a frequency of 63KHz for processing. until the water content of the wood ...

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Abstract

The invention discloses a method for carbonizing the surface of a sludge compost wood conditioner in the technical field of sludge biochemical treatment, which comprises the following steps: (1) preparing a sodium hydroxide solution with the mass fraction of 12-15%, and completely soaking the wood conditioner in the sodium hydroxide solution; (2) putting the wood conditioner treated in the step (1) into a drying kiln, and drying the water content of the wood conditioner to 20-24% at the temperature of 70-75 DEG C for later use; (3) continuously carrying out drying treatment on the wood conditioner treated in the step (2), and keeping the temperature in the drying kiln at 130-150 DEG C; (4) putting the wood conditioner dried in the step (3) into a high-temperature pressure forming machine for hot-pressing treatment, wherein the hot-pressing temperature is 210-220 DEG C; and (5) after carbonization treatment in the step (4), placing the wood conditioner in a room temperature environment,and cooling the wood conditioner in a vapor spray mode. The surface components of the carbonized wood conditioner are changed, and the charcoal structure is not easy to consume oxygen and decompose.

Description

technical field [0001] The invention belongs to the technical field of sludge biochemical treatment, in particular to a method for carbonizing the surface of a sludge composting wood conditioner. Background technique [0002] my country's cities produce about 30 million tons of sludge with a water content of about 80% every year. How to properly treat and dispose of these sludge and avoid secondary pollution is the focus of my country's environmental protection work. Among them, the sludge high-temperature aerobic composting process is one of the most widely used methods. The sludge high-temperature aerobic composting process is a method of converting the organic matter in the sludge into a stable humus by using microorganisms already in nature or artificially cultivated. It is a biochemical process. However, sludge cannot be composted directly, because of its high moisture content and low porosity, which cannot meet the physical and chemical conditions required for compost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/20C05G3/00C01B32/05
CPCC05G3/00C01B32/05C05F17/20Y02W30/40
Inventor 刘伟刘滨
Owner GUIZHOU OURUIXIN ENVIRONMENTAL PROTECTION TECH
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