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Method for treating specific pollutants through high-temperature melting technology

A technology of technical treatment and high-temperature melting, applied in chemical instruments and methods, removal of solid waste, improvement of process efficiency, etc., can solve the problems of high investment cost and operating cost, immature process technology, etc. The effect of solving heavy metal pollution and thorough resource utilization

Inactive Publication Date: 2016-02-24
SHANGHAI LVCHENG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is: the processing object is specific, and the investment cost and operating cost are high
This type of technology is still in the experimental stage, and the process technology is not yet mature.

Method used

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  • Method for treating specific pollutants through high-temperature melting technology
  • Method for treating specific pollutants through high-temperature melting technology

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Embodiment 1

[0110] 1. A method of treating specific pollutants using high-temperature melting technology

[0111] Step 1: Pretreatment: The specific pollutants include electroplating sludge and metal-containing sludge, and incineration disposal residues. The water content of the electroplating sludge and metal-containing sludge is 80wt%. First, the electroplating sludge and metal-containing sludge The sludge is subjected to primary pretreatment to make its water content 35wt%, and then the electroplating sludge, metal-containing sludge, and incineration disposal residue are subjected to secondary pretreatment to make its water content below 10wt% to obtain specific pollutants Dry materials, specifically: the electroplating sludge and metal-containing sludge are sent to the paddle dryer, and the hollow paddle and the shell with a hollow interlayer have the characteristics of extremely high heat transfer area and material volume ratio. The medium (mainly steam) enters the hollow shaft throu...

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Abstract

The invention provides a method for treating specific pollutants through a high-temperature melting technology. The specific pollutants comprise electroplating sludge, sludge containing metal and / or incineration disposal residues. The method comprises the steps that pretreatment is carried out, wherein the specific pollutants are pretreated, the water content of the specific pollutants is reduced to be 10 wt% or lower, and dry specific pollutant materials are obtained; burdening, blending and granulating are carried out, wherein regulating components are added as needed, mixed and granulated, and a granulated mixture is obtained; melting is carried out, wherein the granulated mixture is melted at the melting temperature ranging from 1,200 DEG C to 1,800 DEG C; and products are obtained, wherein the melted metal is settled on the lower layer and is discharged to obtain a metal alloy, and slag and a small part of metal float above the melted metal and are discharged to obtain glassy-state slag. After the specific pollutants are treated through the method, harmless and pollution-free resource materials can be obtained, and the method can be used for resource recycling, and is good in economic benefit and beneficial to commercial popularization.

Description

technical field [0001] The present invention relates to the field of environmental protection, in particular to a method for treating specific pollutants using high-temperature melting technology, in particular to a method for treating surface treatment waste sludge (including electroplating sludge and metal-containing sludge) and / or incinerating waste sludge using high-temperature melting technology Method for disposing of residues, and a corresponding device. Background technique [0002] Today, environmental protection has become a basic national policy, and various environmental pollution problems caused by surface treatment wastes and incineration residues in hazardous wastes are increasingly concerned and valued by the whole society, and even affect social stability and national economy. Sustained and stable development has an important impact. [0003] 1. The characteristics of the processing object [0004] Surface treatment waste is produced during the surface tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00C22B7/00
CPCC22B7/00B09B3/00B09B5/00B09B3/40Y02P10/20
Inventor 洪科徐兆瑜徐全林苏坚贞柏晓雪王大云
Owner SHANGHAI LVCHENG ENVIRONMENTAL PROTECTION TECH
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