CN108773929A - A kind of electroplating wastewater preprocess method - Google Patents
A kind of electroplating wastewater preprocess method Download PDFInfo
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- CN108773929A CN108773929A CN201810609852.9A CN201810609852A CN108773929A CN 108773929 A CN108773929 A CN 108773929A CN 201810609852 A CN201810609852 A CN 201810609852A CN 108773929 A CN108773929 A CN 108773929A
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- waste water
- steps
- electroplating wastewater
- electroplating
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of electroplating wastewater preprocess methods, it is related to electroplating waste water treatment technology field.The electroplating wastewater preprocess method, includes the following steps：S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；S2：Be added flocculant into the waste water after above-mentioned S1 step process, carry out sludge settling processing, then by after precipitation sludge and upper layer waste water be separated by solid-liquid separation；S3：The solid sludges that S2 steps are isolated carry out press filtration processing；S4：The upper layer waste water that S2 steps are isolated is left concentratedly, the heavy metal ion in alkaline hydrated oxide additive precipitation enrichment waste water is then added, which is the mixture of magnesium hydroxide and aluminium hydroxide；S5：The waste water containing heavy metal ion after being enriched in S4 steps is passed through existing electroplating waste water treatment system and carries out subsequent processing.The invention enables the electroplating wastewater processing efficiency in later stage to be improved, and reduces the amount for the treatment of agent.
Description
Technical field
The present invention relates to electroplating waste water treatment technology fields, and in particular to a kind of electroplating wastewater preprocess method.
Background technology
Electroplating wastewater is mainly derived from pre-electroplating treatment at present, coating is rinsed, post-processed, wash away mill floor, coating bath oozes
Various tank liquors of evaporating, emitting, dripping or leaking of liquid or gas caused by leakage or operational administrative are improper and with water etc., if contained Heavy Metals ion is thrown into ring
Border can cause to seriously affect to the life and health of the people.
There are many kinds of classes for the processing method of electroplating wastewater in the prior art, but these methods are all that directly these are electroplated
Waste water, which is brought, is directly added into chemicals treatment, does not pass through the pretreatment of early period；It is to be understood that not passing through pretreated electroplating wastewater
Containing many sludge, floating material, heavy metal ion is also that by precipitation enrichment, not only treatment effeciency is not low in this way, but also locates
The additive amount for managing medicament is also very big, virtually increases the financial burden of enterprise.
Invention content
In view of the shortcomings of the prior art, the present invention provides a kind of small investment, the pretreatment of quick electroplating wastewater
Method.
In order to achieve the above object, the technical scheme is that：
1. a kind of electroplating wastewater preprocess method, it is characterised in that：This approach includes the following steps：
S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；
S2：Flocculant is added into the waste water after above-mentioned S1 step process, carries out sludge settling processing, after then precipitating
Sludge and upper layer waste water be separated by solid-liquid separation；
S3：The solid sludges that S2 steps are isolated carry out press filtration processing, and the filter cake of generation is left concentratedly, carry out innoxious
Landfill；
S4：The upper layer waste water that S2 steps are isolated is left concentratedly, it is heavy that alkaline hydrated oxide additive is then added
The heavy metal ion formed sediment in enrichment waste water, which is the mixed of magnesium hydroxide and aluminium hydroxide
Object is closed, weight ratio is：Magnesium hydroxide is 80%~90%, and aluminium hydroxide is 10%~20%；
S5：By in S4 steps be enriched with after the waste water containing heavy metal ion be passed through existing electroplating waste water treatment system into
The subsequent processing of row.
Further, in the S4 steps, magnesium hydroxide and aluminium hydroxide are Inorganic nonmetal mineral powder, wherein
The granularity of magnesium hydroxide is 1250 mesh, and aluminium hydroxide is 2500 mesh.
Compared to the prior art, the beneficial effects of the present invention are：
It is small investment of the present invention, quick, before electroplating wastewater processing, eliminate in advance floating solid in waste water and
Sludge, while using environmentally friendly with magnesium hydrate powder and aluminium hydroxide powder alkaline hydrated oxide as main component
Heavy metal ion in waste water is enriched with by additive, improves the treatment effeciency of later stage waste water, and Waste water treatment medicament adds
Dosage is greatly reduced, to alleviate business economic burden.
Specific implementation mode
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
A kind of electroplating wastewater preprocess method provided in this embodiment, this approach includes the following steps：
S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；
S2：Flocculant is added into the waste water after above-mentioned S1 step process, carries out sludge settling processing, after then precipitating
Sludge and upper layer waste water be separated by solid-liquid separation；
S3：The solid sludges that S2 steps are isolated carry out press filtration processing, and the filter cake of generation is left concentratedly, carry out innoxious
Landfill；
S4：The upper layer waste water that S2 steps are isolated is left concentratedly, it is heavy that alkaline hydrated oxide additive is then added
The heavy metal ion formed sediment in enrichment waste water, which is the mixed of magnesium hydroxide and aluminium hydroxide
Object is closed, weight ratio is：Magnesium hydroxide is 80%, aluminium hydroxide 20%；
S5：By in S4 steps be enriched with after the waste water containing heavy metal ion be passed through existing electroplating waste water treatment system into
The subsequent processing of row.
Preferably, in the S4 steps, magnesium hydroxide and aluminium hydroxide are Inorganic nonmetal mineral powder, wherein hydrogen
The granularity of magnesia is 1250 mesh, and aluminium hydroxide is 2500 mesh.
Embodiment 2
A kind of electroplating wastewater preprocess method provided in this embodiment, this approach includes the following steps：
S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；
S2：Flocculant is added into the waste water after above-mentioned S1 step process, carries out sludge settling processing, after then precipitating
Sludge and upper layer waste water be separated by solid-liquid separation；
S3：The solid sludges that S2 steps are isolated carry out press filtration processing, and the filter cake of generation is left concentratedly, carry out innoxious
Landfill；
S4：The upper layer waste water that S2 steps are isolated is left concentratedly, it is heavy that alkaline hydrated oxide additive is then added
The heavy metal ion formed sediment in enrichment waste water, which is the mixed of magnesium hydroxide and aluminium hydroxide
Object is closed, weight ratio is：Magnesium hydroxide is 85%, aluminium hydroxide 15%；
S5：By in S4 steps be enriched with after the waste water containing heavy metal ion be passed through existing electroplating waste water treatment system into
The subsequent processing of row.
Preferably, in the S4 steps, magnesium hydroxide and aluminium hydroxide are Inorganic nonmetal mineral powder, wherein hydrogen
The granularity of magnesia is 1250 mesh, and aluminium hydroxide is 2500 mesh.
Embodiment 3
A kind of electroplating wastewater preprocess method provided in this embodiment, this approach includes the following steps：
S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；
S2：Flocculant is added into the waste water after above-mentioned S1 step process, carries out sludge settling processing, after then precipitating
Sludge and upper layer waste water be separated by solid-liquid separation；
S3：The solid sludges that S2 steps are isolated carry out press filtration processing, and the filter cake of generation is left concentratedly, carry out innoxious
Landfill；
S4：The upper layer waste water that S2 steps are isolated is left concentratedly, it is heavy that alkaline hydrated oxide additive is then added
The heavy metal ion formed sediment in enrichment waste water, which is the mixed of magnesium hydroxide and aluminium hydroxide
Object is closed, weight ratio is：Magnesium hydroxide is 90%, aluminium hydroxide 10%；
S5：By in S4 steps be enriched with after the waste water containing heavy metal ion be passed through existing electroplating waste water treatment system into
The subsequent processing of row.
Preferably, in the S4 steps, magnesium hydroxide and aluminium hydroxide are Inorganic nonmetal mineral powder, wherein hydrogen
The granularity of magnesia is 1250 mesh, and aluminium hydroxide is 2500 mesh.
In conclusion the present invention before electroplating wastewater processing, eliminates floating solid and sludge in waste water in advance,
It uses simultaneously environmentally friendly with magnesium hydrate powder and aluminium hydroxide powder alkaline hydrated oxide addition as main component
Heavy metal ion in waste water is enriched with by agent, improves the treatment effeciency of later stage waste water, the additive amount of Waste water treatment medicament
It is greatly reduced, to alleviate business economic burden.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (2)
1. a kind of electroplating wastewater preprocess method, it is characterised in that：This approach includes the following steps：
S1：Electroplating wastewater is filtered into the floating solid on liquid level using filter screen；
S2：Flocculant is added into the waste water after above-mentioned S1 step process, sludge settling processing is carried out, then by the dirt after precipitation
Mud and upper layer waste water are separated by solid-liquid separation；
S3：The solid sludges that S2 steps are isolated carry out press filtration processing, and the filter cake of generation is left concentratedly, carry out innoxious fill out
It buries；
S4：The upper layer waste water that S2 steps are isolated is left concentratedly, it is rich that alkaline hydrated oxide additive precipitation is then added
Collect the heavy metal ion in waste water, which is the mixing of magnesium hydroxide and aluminium hydroxide
Object, weight ratio are：Magnesium hydroxide is 80%~90%, and aluminium hydroxide is 10%~20%；
S5：After the waste water containing heavy metal ion after being enriched in S4 steps is passed through existing electroplating waste water treatment system progress
Continuous processing.
2. electroplating wastewater preprocess method according to claim 1, it is characterised in that：In the S4 steps, magnesium hydroxide
It is Inorganic nonmetal mineral powder with aluminium hydroxide, wherein the granularity of magnesium hydroxide is 1250 mesh, aluminium hydroxide 2500
Mesh.
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| CN201810609852.9A CN108773929A (en) | 2018-06-13 | 2018-06-13 | A kind of electroplating wastewater preprocess method |
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Address after: 246600 Anqing, Yuexi, Anhui province Yuexi County Yun Yun Township Village (County Economic Development Zone Ping Gang Road No. 3) Applicant after: Yuexi Chuangqi Electric Appliance Co., Ltd Address before: 246600 Anqing, Yuexi, Anhui province Yuexi County Yun Yun Township Village (County Economic Development Zone Ping Gang Road No. 3) Applicant before: YUEXI CHUANGQI ELECTRIC APPLIANCE Co.,Ltd. |
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Application publication date: 20181109 |