CN106995263A - A kind of processing method of electroplating sludge - Google Patents
A kind of processing method of electroplating sludge Download PDFInfo
- Publication number
- CN106995263A CN106995263A CN201710419200.4A CN201710419200A CN106995263A CN 106995263 A CN106995263 A CN 106995263A CN 201710419200 A CN201710419200 A CN 201710419200A CN 106995263 A CN106995263 A CN 106995263A
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- electroplating sludge
- processing method
- electroplating
- sludge
- mineral powder
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides a kind of processing method of electroplating sludge, and described preparation method comprises the following steps：（1）In the hot water that granule of polyvinyl alcohol is dissolved in 95 DEG C, it is made stand-by after PVA solution, natural cooling；（2）Take electroplating sludge and make the mineral powder of consolidated adsorbent, be placed in while mixing in comminutor and spray appropriate step（1）The obtained PVA aqueous solution, stirs 2 30min into composite plating mud granule；（3）By step（2）Gained composite plating mud granule, which is placed at 80 120 DEG C, dries 6 12h, produces electroplating sludge/mineral powder composite.
Description
Technical field
The present invention relates to a kind of processing method of electroplating sludge.
Background technology
Electroplating industry is the important basic processing industry of China, is also the current whole world three one of pollution industry greatly.At it
Solid waste largely based on electroplating sludge can be produced in plating production process.Containing a large amount of in these solid waste
The heavy metal compounds such as chromium, iron, nickel, copper, zinc and its solubility salt, unstable, be easy to run off the features such as big with toxicity, category
In National Hazard waste（《National Hazard waste register》HW17, HW21 class）.Appointment produces 10,000,000 tons of electricity greatly every year for China
Waste electroplating sludge, is the discarded object of power boiler discharge of electroplating industry.A large amount of electroplating sludges are stored up in the form of solid waste, not only
The heavy metals such as copper, nickel, zinc, chromium in meeting appropriation of land and easy contaminated soil and water body, sludge are under rain leaching effect
, can along electroplating sludge-Soil-crops-human body Path Migration, and may cause surface water, soil, underground water time
Raw pollution, or even jeopardize biological chain, cause serious environmental disruption.In recent years, developing rapidly with China's modern industry,
Electroplating enterprise number is also increased.But most of electroplating enterprise scale is smaller, equipment falls behind, managerial skills are low, causes dirt
Mud yield is big and complicated component so that the subsequent treatment process of electroplating sludge turn into that China faces the problem of need solving it
One.
The processing of electroplating sludge is always study hotspot problem both domestic and external, research worker it is expanded extensively and
In-depth study, and certain achievement in research is achieved, but still suffer from some places having much room for improvement.In early days, for prevent plating
Harmful heavy metal is polluted to soil and air in wastewater sludge, and the processing method of traditional electroplating wastewater sludge is directly to fill out
Bury.Direct landfill method advantage is that simple, quick and cost is relatively low, is adapted to the electroplating wastewater sludge of the relative small lot of processing.But
The heavy metal that this processing mode is present in potential risk of environmental pollution, the electroplating wastewater sludge of burial is possible to penetrate into ground
Under, underground water is polluted and caused the destruction of whole water environment.And with the development of electroplating industry, electroplating wastewater sludge
Yield rises rapidly, and Land Demand increases also so that the need for landfill method no longer adapts to sustainable development, facing landfill yard
The problem of ground wretched insufficiency, direct landfill method is gradually rejected.
To reduce the environmental problem that direct landfill method is brought, grow up on the basis of direct landfill method for solidification/steady
Surely change treatment technology, be also one of current processing electroplating wastewater sludge most popular method.This method is by adding curing agent and electricity
The mixing of waste electroplating sludge and curing molding, the poisonous and harmful substance in electroplating wastewater sludge is locked in firming body and can not
It is leached, the purpose for mitigating or eliminating electroplating wastewater sludge pollution is reached with this.Conventional curing agent has cement, glass, drip
Blue or green, lime and macromolecule etc., thus curing/stabilizing technology can be subdivided into lime solidification, water according to the difference of curing agent
Mud solidification, vitrification solidifying, bitumen solidification etc..Chinese invention patent entitled " a kind of electroplating sludge cement brick and its preparation side
Method ", Application No.：201610826416.8, it which disclose a kind of using 100 parts of cement, 5~40 parts of river sands；1~18 part
Activated alumina etc. fixes the method that 10~80 parts of electroplated heavy metals sludge prepare electroplating wastewater sludge cement brick, and this method is first
Acid-base neutralization processing and break process are carried out to electroplated heavy metals sludge, then by electroplating wastewater sludge and cement, sand, work
Property the raw material such as alumina raw material be uniformly mixed in proportion, add water stirring, compressing, obtains adobe aged and dry
Afterwards, electroplating wastewater sludge cement brick is obtained, when the characteristic for meeting water cure using cement realizes that electroplating wastewater sludge cement brick is used
Heavy metal free Ion release.But it is present, and floor space is big, in firming body heavy metal long-time stability cannot be guaranteed, economic effect
The shortcomings of benefit is relatively low.
Current electroplating sludge rarely has an economy and the parallel processing method of technology, and with bentonite, zeolite, diatomite,
Galapectite etc. has wide material sources for the Inorganic nonmetal mineral powder of representative, cheap and heavy metal advantages of good adsorption effect etc.
Advantage, and with polyvinyl alcohol（PVA）Electroplating sludge and mineral powder are combined as binding agent.But with cost it is high,
The big defect of energy resource consumption.
The content of the invention
There is provided a kind of processing method of electroplating sludge for problem above by the present invention.
Goal of the invention is realized by following scheme：A kind of processing method of electroplating sludge, described preparation method is included such as
Lower step：
（1）In the hot water that granule of polyvinyl alcohol is dissolved in 95 DEG C, it is made stand-by after PVA solution, natural cooling；
（2）Take electroplating sludge and make the mineral powder of consolidated adsorbent, be placed in sprinkling while mixing in comminutor appropriate
Step（1）The obtained PVA aqueous solution, stirs 2-30min into composite plating mud granule；
（3）By step（2）Gained composite plating mud granule, which is placed at 80-120 DEG C, dries 6-12h, produces electroplating sludge/mineral
Powder composite material.
Further, step（1）In, the concentration of described PVA solution is 5-15wt.%.
Further, step（2）In, described electroplating sludge and mineral powder mass ratio is 0.4-3.
Further, step（1）In, PVA solution concentration is 8-10wt.%.
Further, step（2）In, mineral powder is the non-gold such as bentonite, zeolite, diatomite, galapectite and concave convex rod
Belong to the one or more in ore deposit.
Further, step（2）In, electroplating sludge is 0.45-2 with mineral powder mass ratio.
Further, step（2）In, the mixture and PVA of mineral powder of the electroplating sludge with making consolidated adsorbent are water-soluble
The mass ratio of liquid is 2-6:1.
Further, step（3）In, the drying temperature of composite plating mud granule is 90-110 DEG C.
Further, step（3）In, the drying time of composite plating mud granule is 8-10h.
A kind of application that composite sludge particle is made according to methods described, composite sludge particle is as applying filler in compound
In material.
The beneficial effects of the present invention are：Technical requirements are simple, and with low cost, effect is notable.The energy compared with cement solidification
Stacking volume is effectively reduced, the waste of land resource is reduced.Composite sludge particle prepared by the present invention can make applying filler in multiple
In condensation material.
Brief description of the drawings
Fig. 1 is the preparation technology flow chart of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described：
With reference to accompanying drawing 1, a kind of embodiment 1, the processing method of electroplating sludge of the invention, described preparation method includes following step
Suddenly：
（1）In the hot water that granule of polyvinyl alcohol is dissolved in 95 DEG C, it is made stand-by after PVA solution, natural cooling；
（2）Take electroplating sludge and make the mineral powder of consolidated adsorbent, be placed in sprinkling while mixing in comminutor appropriate
Step（1）The obtained PVA aqueous solution, stirs 2-30min into composite plating mud granule；
（3）By step（2）Gained composite plating mud granule, which is placed at 80-120 DEG C, dries 6-12h, produces electroplating sludge/mineral
Powder composite material.
A kind of processing method of electroplating sludge, step（1）In, the concentration of described PVA solution is 5-15wt.%.
A kind of processing method of electroplating sludge, step（2）In, described electroplating sludge and mineral powder mass ratio is 0.4-
3。
A kind of processing method of electroplating sludge, step（1）In, PVA solution concentration is 8-10wt.%.
A kind of processing method of electroplating sludge, step（2）In, mineral powder is bentonite, zeolite, diatomite, galapectite
With the one or more in the nonmetallic ore such as concave convex rod.
A kind of processing method of electroplating sludge, step（2）In, electroplating sludge is 0.45-2 with mineral powder mass ratio.
A kind of processing method of electroplating sludge, step（2）In, electroplating sludge and make consolidated adsorbent mineral powder it is mixed
The mass ratio of compound and the PVA aqueous solution is 2-6:1.
A kind of processing method of electroplating sludge, step（3）In, the drying temperature of composite plating mud granule is 90-110
℃。
A kind of processing method of electroplating sludge, step（3）In, the drying time of composite plating mud granule is 8-10h.
A kind of embodiment 2, processing method of electroplating sludge weighs 600g drying electroplating sludges and mixed with 400g bentonites,
It is placed in comminutor and stirs, while spraying the 400ml 5wt.% PVA aqueous solution, takes out viscous after opening comminutor, granulation 15min
The electroplating sludge composite particles tied are placed in 80 DEG C of baking ovens drying 6h, that is, obtain composite plating mud granule.
A kind of processing method of the electroplating sludge of embodiment 3, weighs 600g drying electroplating sludges and is mixed with 300g zeolites, is placed in
Stirred in comminutor, while spraying the 200ml 8wt.% PVA aqueous solution, open comminutor, granulation 5min takes out the electricity bonded
Plating sludge composite particles are placed in 100 DEG C of baking ovens drying 12h, that is, obtain composite plating mud granule.
A kind of processing method of the electroplating sludge of embodiment 4, weighs 600g drying electroplating sludges and 300g galapectites, 300g are swollen
Profit soil, the mixing of 600g diatomite, are placed in comminutor and stir, while spraying the 300ml 15wt.% PVA aqueous solution, open granulation
Machine, granulation 30min takes out the electroplating sludge composite particles bonded and is placed in 120 DEG C of baking ovens drying 8h, that is, obtains compound electric
Plate mud granule.
A kind of processing method of the electroplating sludge of embodiment 5, weighs 600g drying electroplating sludges and 600g diatomite, is placed in and makes
Stirred in grain machine, while spraying the 250ml 10wt.% PVA aqueous solution, open comminutor, granulation 8min takes out the electricity bonded
Plating sludge composite particles are placed in 90 DEG C of baking ovens drying 10h, that is, obtain composite plating mud granule.
Comparative example
Comparative example dries electroplating sludge using 600g, is placed in comminutor and stirs, while the PVA for spraying 200ml 8wt.% is water-soluble
Liquid, opens comminutor, and granulation 5min takes out the electroplating sludge composite particles bonded and is placed in 100 DEG C of baking ovens drying 12h, i.e.,
Obtain electroplating sludge particle.
Leaching test is tested
Method is shaken using level, butt weight is weighed and prepares sample for 100g, be placed in 2L extraction flasks, covered tightly after adding 1L water
Bottle cap, is then vertically fixed on horizontal shaking device, vibrates extraction flask is removed after 8h at room temperature, stand 16h, take leachate
Body is tested after filtering with microporous membrane.Experimental result is as shown in table 1.
The detection and analysis result of the embodiment sample of table 1
| Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example | |
| Cr (VI) leaching concentration（mg/L） | 0.2621 | 0.4659 | 0.1775 | 0.4263 | 3.7625 |
By embodiment 2-4 in table 1 and the detection and analysis result of comparative example, embodiment 2-4 Cr (VI) leachings are dense
Degree is significantly lower than comparative example.
A kind of application that composite sludge particle is made according to methods described, composite sludge particle is as applying filler in compound
In material.
Although the present invention is described by reference to preferred embodiment, those of ordinary skill in the art should
Work as understanding, the description of above-described embodiment can be not limited to, in the range of claims, can make each in form and details
Plant change.
Claims (10)
1. a kind of processing method of electroplating sludge, it is characterised in that：Described preparation method comprises the following steps：
（1）In the hot water that granule of polyvinyl alcohol is dissolved in 95 DEG C, it is made stand-by after PVA solution, natural cooling；
（2）Take electroplating sludge and make the mineral powder of consolidated adsorbent, be placed in sprinkling while mixing in comminutor appropriate
Step（1）The obtained PVA aqueous solution, stirs 2-30min into composite plating mud granule；
（3）By step（2）Gained composite plating mud granule, which is placed at 80-120 DEG C, dries 6-12h, produces electroplating sludge/mineral
Powder composite material.
2. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that：Step（1）In, it is described
The concentration of PVA solution is 5-15wt.%.
3. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that：Step（2）In, described electricity
It is 0.4-3 that sludge, which is plated, with mineral powder mass ratio.
4. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that：Step（1）In, PVA solution
Concentration is 8-10wt.%.
5. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that；Step（2）In, mineral powder
For the one or more in the nonmetallic ores such as bentonite, zeolite, diatomite, galapectite and concave convex rod.
6. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that；Step（2）In, electroplating sludge
It is 0.45-2 with mineral powder mass ratio.
7. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that；Step（2）In, electroplating sludge
Mass ratio with mixture and the PVA aqueous solution of the mineral powder for making consolidated adsorbent is 2-6:1.
8. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that；Step（3）In, composite plating
The drying temperature of mud granule is 90-110 DEG C.
9. a kind of processing method of electroplating sludge according to claim 1, it is characterised in that；Step（3）In, composite plating
The drying time of mud granule is 8-10h.
10. a kind of application that composite sludge particle is made according to claim 1-9 methods describeds, it is characterised in that；Composite sludge
Particle is as applying filler in composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419200.4A CN106995263B (en) | 2017-06-06 | 2017-06-06 | Treatment method of electroplating sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710419200.4A CN106995263B (en) | 2017-06-06 | 2017-06-06 | Treatment method of electroplating sludge |
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| Publication Number | Publication Date |
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| CN106995263A true CN106995263A (en) | 2017-08-01 |
| CN106995263B CN106995263B (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710419200.4A Expired - Fee Related CN106995263B (en) | 2017-06-06 | 2017-06-06 | Treatment method of electroplating sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651892A (en) * | 2017-09-18 | 2018-02-02 | 新中天环保股份有限公司 | A kind of electroplating sludge cement solidification technique |
| CN112759339A (en) * | 2021-01-05 | 2021-05-07 | 南京理工大学 | Green macromolecular compound sludge curing agent and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262789A (en) * | 1998-03-19 | 1999-09-28 | Seibutsu Kankyo System Kogaku Kenkyusho:Kk | Biological treatment method of waste organic matter system |
| CN103102051A (en) * | 2013-01-18 | 2013-05-15 | 河北联合大学 | Method for preparing calcium ferrite steelmaking slag former by use of galvanizing sludge |
| CN104512988A (en) * | 2013-09-29 | 2015-04-15 | 宝山钢铁股份有限公司 | Method for treating heavy metal sludge by using stainless steel molten slag |
| CN105273790A (en) * | 2015-11-04 | 2016-01-27 | 雷春生 | Oily sludge recycling harmless comprehensive utilization method |
-
2017
- 2017-06-06 CN CN201710419200.4A patent/CN106995263B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11262789A (en) * | 1998-03-19 | 1999-09-28 | Seibutsu Kankyo System Kogaku Kenkyusho:Kk | Biological treatment method of waste organic matter system |
| CN103102051A (en) * | 2013-01-18 | 2013-05-15 | 河北联合大学 | Method for preparing calcium ferrite steelmaking slag former by use of galvanizing sludge |
| CN104512988A (en) * | 2013-09-29 | 2015-04-15 | 宝山钢铁股份有限公司 | Method for treating heavy metal sludge by using stainless steel molten slag |
| CN105273790A (en) * | 2015-11-04 | 2016-01-27 | 雷春生 | Oily sludge recycling harmless comprehensive utilization method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107651892A (en) * | 2017-09-18 | 2018-02-02 | 新中天环保股份有限公司 | A kind of electroplating sludge cement solidification technique |
| CN112759339A (en) * | 2021-01-05 | 2021-05-07 | 南京理工大学 | Green macromolecular compound sludge curing agent and application thereof |
| CN112759339B (en) * | 2021-01-05 | 2021-12-07 | 南京理工大学 | Green macromolecular compound sludge curing agent and application thereof |
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| CN106995263B (en) | 2020-07-10 |
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