CN1935709A - Electroplating sludge hydrothermal ferritizing treating method - Google Patents
Electroplating sludge hydrothermal ferritizing treating method Download PDFInfo
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- CN1935709A CN1935709A CN 200610116374 CN200610116374A CN1935709A CN 1935709 A CN1935709 A CN 1935709A CN 200610116374 CN200610116374 CN 200610116374 CN 200610116374 A CN200610116374 A CN 200610116374A CN 1935709 A CN1935709 A CN 1935709A
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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
The present invention addresses the utilization and the treatment process of electroplating sludge solid waste, belongs to chemistry and technical field of environmental science.
Background technology
Electroplating sludge is the solid waste that produces in the electroplating wastewater processing process, and outward appearance is greyish-green, belongs to industrial dangerous waste.Electroplating sludge has characteristics such as toxicity is big, easily accumulation, instability, easy loss, as not dealt carefully with, stacks arbitrarily, will cause serious secondary pollution.Yet electroplating sludge contains a large amount of heavy metals, as copper, chromium, nickel, zinc, iron etc., have certain economic and be worth, and be a kind of secondary renewable resources of cheapness.At present, electroplating sludge both domestic and external is mainly taked the processing mode of innoxious landfill, does not also have a kind of comprehensive Utilization Ways of taking into account environment and economical effects so far.Therefore, the processing of electroplating sludge has become the environmental problem that needs to be resolved hurrily.
Summary of the invention
The utilization and the treatment process that the purpose of this invention is to provide a kind of electroplating sludge solid waste.Another purpose of the present invention is to obtain ferrite and copper complex by the hydrothermal method technical measures, realizes electric plating sludge resource, improves its added value.
The present invention is a kind of treatment process of electroplating sludge hydrothermal ferritizing, it is characterized in that: with the electroplating sludge solid waste is raw material, by replenishing an amount of source of iron, under certain hydrothermal condition, obtains leaching the low complex ferrite of toxicity; The step of this treatment process is as follows:
Replenish source of iron oxidation high ferro FeCl with adding in a certain amount of electroplating sludge
36H
2O and distilled water are made former slip, add subsequently after precipitation agent ammoniacal liquor regulates slurry pH value to 9, place autoclave, stir, and under 200 ℃ of temperature, carry out hydro-thermal reaction with the 600rpm rotating speed, reaction times is 4 hours, drives still after then kettle being naturally cooled to room temperature; Left standstill 5～8 hours, and treated its layering, separation of supernatant after the layering, the supernatant liquor after the separation is comparatively purified mazarine cupric tetramminochloride solution; Behind the sediment-filled phase usefulness deionized water wash that stays 6～8 times, dried 15 hours down, obtain nickel zinc complex ferrite at 105 ℃.
The above-mentioned electroplating sludge and the consumption of ferric sesquichloride are according to the heavy metal content in the electroplating sludge, calculate according to the balance principle of ferrite matrix structure and chemical valence, determine actual ferric sesquichloride magnitude of recruitment according to experiment simultaneously.The electroplating sludge among the present invention and the consumption proportion of ferric sesquichloride are: dried electroplating sludge: ferric sesquichloride=64～71: 100.
The chemical ingredients of electroplating sludge is among the present invention: Cu 17.84%, and Ni 7.89%, and Cr 6.66%, and Zn 4.85%, and Fe 4.69%, and Ca 5.50%, and O 29.34%, and S 3.80%, and other are 19.43% years old; Below all be weight percentage.
Characteristics of the present invention are, are raw material with the electroplating sludge, by replenishing an amount of source of iron, under hydrothermal condition, synthesize complex ferrite.This method is with water as solvent, under certain temperature and pressure, as precursor, these metal hydroxidess fully dissolve and form different growth units with corresponding oxyhydroxide, and, crystallize into constitutionally stable complex ferrite according to certain bind mode nucleating growth.Prepared crystal particle diameter is little, and granularity is more even, does not need the high-temperature calcination pre-treatment.The crystal that forms is comparatively complete, the purity height, and have higher activity, generally have only tens nanometers.The inventive method is easy and simple to handle, and cost is low, has certain using value.
Electroplating sludge with the HAC-NaAc buffered soln analysis heavy metal leaching toxicity of pH=4.93, all is lower than the leaching toxicity judging standard value of U.S. TCLP and GB (GB5085.3-1996) after replenishing the source of iron hydrothermal treatment consists, illustrate to reach emission standard.
Description of drawings
Fig. 1 is the X ray diffracting spectrum of electroplating sludge among the present invention.
Fig. 2 is the X ray diffracting spectrum of electroplating sludge after hydrothermal treatment consists.
Embodiment
After now embodiments of the invention specifically being described in.
Embodiment 1
Replenish source of iron ferric sesquichloride FeCl with adding in a certain amount of electroplating sludge
36H
2O and distilled water are made former slip, add precipitation agent ammoniacal liquor subsequently, after regulating slurry pH value to 9, place autoclave, stir with the 600rpm rotating speed, and under 200 ℃ of temperature, carry out hydro-thermal reaction, the reaction times is 4 hours, drives still after then kettle being naturally cooled to room temperature; Left standstill 8 hours, and treated its layering, separation of supernatant after the layering, the supernatant liquor after the separation is comparatively purified mazarine cupric tetramminochloride solution; Behind the sediment-filled phase usefulness deionized water wash that stays 8 times, dried 15 hours down, obtain nickel zinc complex ferrite at 105 ℃.
The used electroplating sludge and the consumption proportion of ferric sesquichloride are in the said process: dried electroplating sludge: ferric sesquichloride=71: 100.
The chemical ingredients of used electroplating sludge is in the present embodiment: Cu 17.84%, and Ni 7.89%, and Cr 6.66%, and Zn 4.85%, and Fe 4.69%, and Ca 5.50%, and O 29.34%, and S 3.80%, and other are 19.43% years old; Below all be weight percentage.
In the inventive method, the X ray diffracting spectrum of former electroplating sludge is seen Fig. 1.The X ray diffracting spectrum of electroplating sludge is seen Fig. 2 after hydrothermal treatment consists.
As can be seen from Figure 1, former electroplating sludge does not have obvious diffraction peak, is in amorphous state.And, produced complex ferrite by after the hydrothermal treatment consists, and be mainly nickel-zinc ferrite, and crystallization is better, in Fig. 2, can see the diffraction peak of several complex ferrites.
In addition, electroplating sludge after it generates complex ferrite, is analyzed its heavy metal with the HAC-NaAC buffered soln of pH=4.93 and is leached toxicity after hydrothermal treatment consists, all be lower than the leaching toxicity judging standard value of U.S. TCLP and GB (GB5085.3-1996), reached emission standard.
Claims (3)
1. the treatment process of an electroplating sludge hydrothermal ferritizing is characterized in that: be raw material with the electroplating sludge, by replenishing an amount of source of iron, under certain hydrothermal condition, obtain leaching the low complex ferrite of toxicity; The step of this treatment process is as follows:
Replenish source of iron oxidation high ferro FeCl with adding in a certain amount of electroplating sludge
36H
2O and distilled water are made former slip, add subsequently after precipitation agent ammoniacal liquor regulates slurry pH value to 9, place autoclave, stir, and under 200 ℃ of temperature, carry out hydro-thermal reaction with the 600rpm rotating speed, reaction times is 4 hours, drives still after then kettle being naturally cooled to room temperature; Left standstill 5～8 hours, and treated its layering, separation of supernatant after the layering, the supernatant liquor after the separation is comparatively purified mazarine cupric tetramminochloride solution; Behind the sediment-filled phase usefulness deionized water wash that stays 6～8 times, dried 15 hours down, obtain nickel zinc complex ferrite at 105 ℃.
2. the treatment process of a kind of electroplating sludge hydrothermal ferritizing as claimed in claim 1 is characterized in that the consumption proportion of described electroplating sludge and ferric sesquichloride is: dried electroplating sludge: ferric sesquichloride=64～71: 100.
3. the treatment process of a kind of electroplating sludge hydrothermal ferritizing as claimed in claim 1, it is characterized in that its chemical ingredients of described electroplating sludge is: Cu 17.84%, Ni 7.89%, Cr 6.66%, and Zn 4.85%, and Fe 4.69%, Ca 5.50%, O 29.34%, and S 3.80%, and other are 19.43% years old; Below all be weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101163745A CN100431722C (en) | 2006-09-21 | 2006-09-21 | Electroplating sludge hydrothermal ferritizing treating method |
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| CNB2006101163745A CN100431722C (en) | 2006-09-21 | 2006-09-21 | Electroplating sludge hydrothermal ferritizing treating method |
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| CN1935709A true CN1935709A (en) | 2007-03-28 |
| CN100431722C CN100431722C (en) | 2008-11-12 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104857946A (en) * | 2015-05-12 | 2015-08-26 | 上海大学 | Method for using zinc electroplating sludge to prepare azo dyes photocatalyst |
| CN105481158A (en) * | 2016-01-11 | 2016-04-13 | 上海第二工业大学 | Recycling method of copper-clad plate microbiological leaching liquid |
| CN106520239A (en) * | 2016-12-05 | 2017-03-22 | 上海大学 | Method for preparing landfill gas purifying agent by utilizing sludge |
| CN109762991A (en) * | 2019-01-22 | 2019-05-17 | 福州大学 | A kind of chromium containing electroplating Heavy Metals in Sludge Selective Separation recovery process |
| CN112791708A (en) * | 2019-11-13 | 2021-05-14 | 西南科技大学 | Method for preparing attapulgite/polypyrrole composite material based on iron-containing wastewater |
| CN113192717A (en) * | 2021-04-22 | 2021-07-30 | 兰州大学 | Metal soft magnetic composite material and preparation method thereof |
| CN115282976A (en) * | 2022-07-19 | 2022-11-04 | 华南理工大学 | Chromium-doped ferrite catalyst and preparation method and application thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3507326B2 (en) * | 1998-02-27 | 2004-03-15 | 中小企業総合事業団 | Processing equipment for plating sludge |
| CN1108885C (en) * | 2000-06-06 | 2003-05-21 | 广东工业大学 | Technological process using electroplating sludge as resource to make harmless treatment |
| IL150446A (en) * | 2002-06-27 | 2007-12-03 | Veracon Metal Ltd | Method for the removal of contaminant metal ions from wastewater |
| CN1186271C (en) * | 2002-09-18 | 2005-01-26 | 南京大学 | Ferrite process for treating nickel-contg. waste water |
| CN1193834C (en) * | 2003-05-20 | 2005-03-23 | 李康敏 | Method for integrative use of industrial waste residue, stabilizing and solidifying treatment of electroplating mud |
-
2006
- 2006-09-21 CN CNB2006101163745A patent/CN100431722C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104857946A (en) * | 2015-05-12 | 2015-08-26 | 上海大学 | Method for using zinc electroplating sludge to prepare azo dyes photocatalyst |
| CN105481158A (en) * | 2016-01-11 | 2016-04-13 | 上海第二工业大学 | Recycling method of copper-clad plate microbiological leaching liquid |
| CN106520239A (en) * | 2016-12-05 | 2017-03-22 | 上海大学 | Method for preparing landfill gas purifying agent by utilizing sludge |
| CN109762991A (en) * | 2019-01-22 | 2019-05-17 | 福州大学 | A kind of chromium containing electroplating Heavy Metals in Sludge Selective Separation recovery process |
| CN109762991B (en) * | 2019-01-22 | 2019-11-29 | 福州大学 | A kind of chromium containing electroplating Heavy Metals in Sludge Selective Separation recovery process |
| CN112791708A (en) * | 2019-11-13 | 2021-05-14 | 西南科技大学 | Method for preparing attapulgite/polypyrrole composite material based on iron-containing wastewater |
| CN113192717A (en) * | 2021-04-22 | 2021-07-30 | 兰州大学 | Metal soft magnetic composite material and preparation method thereof |
| CN115282976A (en) * | 2022-07-19 | 2022-11-04 | 华南理工大学 | Chromium-doped ferrite catalyst and preparation method and application thereof |
| CN115282976B (en) * | 2022-07-19 | 2023-11-07 | 华南理工大学 | Chromium-doped ferrite catalyst and preparation method and application thereof |
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| CN100431722C (en) | 2008-11-12 |
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