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Industrial sludge recycling method

A technology for industrial sludge and treatment methods, which is applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc. Secondary pollution and other issues to ensure continuous, safe and stable operation, avoid secondary pollution, and reduce disposal energy consumption

Active Publication Date: 2018-11-20
CHENGDU YUANYONG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has an immediate effect on sludge reduction, but the incineration process consumes a lot of energy, and at the same time the incineration produces tail gas, especially the dioxins produced under medium and high temperature conditions, which are discharged into the atmosphere, which seriously affects the physical and mental health of surrounding residents. The incineration residue contains toxic and harmful substances such as heavy metals, which will cause secondary pollution when entering the landfill
[0007] Incineration solidification landfill method: The difference between incineration solidification landfill method and incineration landfill method is that after the sludge is incinerated, the residue is mixed with cement for solidification, and after solidification, it enters the landfill for landfill. This method also contains dioxins. At the same time, the solidified residue can control heavy metals from entering the groundwater in the short term, but after several years of cement curing ability failure, heavy metals will enter the groundwater again and affect the surrounding environment

Method used

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  • Industrial sludge recycling method

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Embodiment 1

[0033] As a most basic embodiment of the present invention, a kind of industrial sludge resource treatment method is disclosed, such as figure 1 , including the following steps:

[0034] Sludge sorting and mixing step: The industrial sludge to be treated is sent to the sludge sorting machine according to the classification of physical and chemical sludge and biochemical sludge to remove impurities, such as packaging, stones, iron pieces, etc. To facilitate subsequent sludge transportation and improve the efficiency of hydrothermal reaction treatment, according to the source and type of industrial sludge, the physical and chemical sludge and biochemical sludge are fully mixed according to the mass ratio of 1: (1~5) during the sorting process;

[0035] Sludge conveying step: the industrial sludge after the sludge sorting and mixing step is sent to the hydrothermal reactor through the conveying pump. In addition to the conveying function, the sludge conveying device can also cont...

Embodiment approach

[0046] As a preferred embodiment of the method of the present invention, a method for recycling industrial sludge is disclosed, such as figure 1 , including the following steps:

[0047] Sludge sorting and mixing step: The industrial sludge to be treated is sent to the sludge sorting machine according to the classification of physical and chemical sludge and biochemical sludge to remove impurities, such as packaging, stones, iron pieces, etc. To facilitate subsequent sludge transportation and improve the efficiency of hydrothermal reaction treatment, according to the source and type of industrial sludge, the physical and chemical sludge and biochemical sludge are fully mixed according to the mass ratio of 1: (1~5) during the sorting process;

[0048] Sludge conveying step: the industrial sludge after the sludge sorting and mixing step is sent to the hydrothermal reactor through the conveying pump. In addition to the conveying function, the sludge conveying device can also cont...

Embodiment 3

[0057] As a preferred embodiment of the present invention, a method for recycling industrial sludge is disclosed, such as figure 1 , including the following steps:

[0058] 1. Sludge sorting and mixing steps: Send the industrial sludge to be treated to the sludge sorting machine for sorting to remove impurities, such as packaging, stones, iron pieces and other substances. At the same time, in order to facilitate subsequent sludge transportation and improve the efficiency of hydrothermal reaction treatment, according to the different sources and types of industrial sludge, physical and chemical sludge and biochemical sludge are fully separated according to the mass ratio of 1: (1~5) during the sorting process. mix.

[0059] 2. Sludge conveying step: After sorting and mixing, the sludge is sent to the hydrothermal reactor through the conveying pump. In addition to the conveying function, the sludge conveying device can also control the conveying amount according to requirements...

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Abstract

The invention discloses an industrial sludge recycling method, and belongs to the technical field of industrial sludge harmless treatment. The industrial sludge recycling method comprises the steps ofsludge sorting and mixing, sludge conveying, hydrothermal reaction, plate-frame pressure filtration and dewatering, sludge drying, pyrolysis, plasma gasification and tail gas treatment. The industrial sludge recycling method can effectively use a heat value of sludge, recycle potential heat energy in the sludge, recycle metal parts, melt residual inorganic matters into glass bodies which cover residual heavy metals to serve as building materials, avoid harms caused by the heavy metals entering water and basically implement zero discharge of pollutants.

Description

technical field [0001] The invention belongs to the technical field of harmless disposal of industrial sludge, and in particular relates to a method for resourceful treatment of industrial sludge. Background technique [0002] Industrial sludge refers to the sludge produced by the sewage treatment station in the process of treating industrial sewage. The sludge is semi-solid or solid after flocculation and dehydration. The moisture content of the sludge is as high as 70~90%, or even higher, generally every 1000m 3 Sewage will produce nearly 5 tons of sludge. According to different types of industrial sewage, the types and amounts of toxic and harmful substances in the sludge are different. For example, most of the organic matter in the chemical wastewater, the majority of heavy metals in the electroplating wastewater, and the toxic and harmful substances in the sludge Substances, if not thoroughly disposed of, pollution will always exist. Therefore, resource disposal of in...

Claims

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Application Information

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IPC IPC(8): C02F11/12C02F11/10B01D53/78B01D53/56
CPCB01D53/56B01D53/78B01D2251/2062C02F11/10C02F11/12C02F11/122C02F2303/06Y02W10/40
Inventor 卢小冬刘源肖菊花何洪王磊陶中林奂安开罗德旋刘剑陈俊
Owner CHENGDU YUANYONG TECH DEV
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