Unlock instant, AI-driven research and patent intelligence for your innovation.

Electroplating sludge hydrothermal ferritizing treating method

A technology of electroplating sludge, treatment method, applied in the fields of chemistry and environmental science

Inactive Publication Date: 2008-11-12
SHANGHAI UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the electroplating sludge at home and abroad is mainly treated by harmless landfill, and there is no comprehensive utilization method that takes into account both environmental and economic benefits.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electroplating sludge hydrothermal ferritizing treating method
  • Electroplating sludge hydrothermal ferritizing treating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add a certain amount of electroplating sludge to supplement iron source ferric chloride FeCl 3 ·6H 2 O and distilled water to make a raw material slurry, then add precipitant ammonia water, adjust the pH value of the slurry to 9, place in an autoclave, stir at a speed of 600 rpm, and carry out a hydrothermal reaction at a temperature of 200 ° C. The reaction time is 4 Hours, then the kettle body was naturally cooled to room temperature and then opened; it was allowed to stand for 8 hours until it was layered, and the supernatant was separated after the layers. The separated supernatant was relatively pure dark blue tetraammonium chloride Copper solution; the remaining deposited phase was washed 8 times with deionized water, and then dried at 105° C. for 15 hours to obtain nickel-zinc composite ferrite.

[0015] The dosage ratio of electroplating sludge and ferric chloride used in the above process is: dry electroplating sludge: ferric chloride=71:100.

[0016] The che...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for utilizing and treating electrolysis mud solid waste, belonging to chemical and environmental science and technique field. And it is a treating method for hydrothermally converting electrolysis mud into ferrites, characterized in using electrolysis mud solid wastes as raw material, supplementing a proper amount of iron and synthesizing composite ferrites with low leached toxicity. And it is a harmless treating technique, and the treated electrolysis mud can reach the effluent standard. And it is beneficial to environmental protection, and able to implement electrolysis mud resource conversion, increasing the added value.

Description

technical field [0001] The invention relates to a utilization and treatment method of electroplating sludge solid waste, and belongs to the technical field of chemistry and environment science. Background technique [0002] Electroplating sludge is a solid waste produced during the treatment of electroplating wastewater. It is gray-green in appearance and belongs to industrial hazardous waste. Electroplating sludge has the characteristics of high toxicity, easy accumulation, instability, and easy loss. If it is not properly treated and stacked randomly, it will cause serious secondary pollution. However, electroplating sludge contains a large amount of heavy metals, such as copper, chromium, nickel, zinc, iron, etc., which has certain economic value and is a cheap secondary renewable resource. At present, electroplating sludge at home and abroad is mainly disposed of in a harmless landfill, and there is no comprehensive utilization method that takes into account both enviro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00C02F11/00C02F103/16
Inventor 陈丹朱化军钱光人程翔陈翠霞
Owner SHANGHAI UNIV