CN109574320A - A kind of electroplating wastewater solid-liquid fast separating process - Google Patents
A kind of electroplating wastewater solid-liquid fast separating process Download PDFInfo
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- CN109574320A CN109574320A CN201910022590.0A CN201910022590A CN109574320A CN 109574320 A CN109574320 A CN 109574320A CN 201910022590 A CN201910022590 A CN 201910022590A CN 109574320 A CN109574320 A CN 109574320A
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- Prior art keywords
- electroplating wastewater
- solid
- separating process
- liquid
- fast separating
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention belongs to environmental technology fields, and in particular to a kind of electroplating wastewater solid-liquid fast separating process includes the following steps: that the pH value of electroplating wastewater 1) is adjusted to 9-10 with Calcium Carbide Ash first, active carbon is then added and is precipitated；2) the electroplating wastewater dirty solution after step 1) precipitating Drum Vacuum Filter is delivered to be separated by solid-liquid separation.It solves in the prior art in the treatment process of electroplating wastewater, most of traditional solid-liquid fast separating process is all flocculating setting, its flocculation aid introduced and flocculant are all new pollutants, the effect of flocculating setting is also uncontrollable, production efficiency is low, problem at high cost, this electroplating wastewater solid-liquid fast separating process proposed by the present invention, productivity effect is good, is suitble to Large scale processes application.
Description
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of electroplating wastewater solid-liquid fast separating process.
Background technique
Plating, the basic processing industry important as China can generate a large amount of waste water in the plating process, be electroplated
In the treatment process of waste water, most of traditional solid-liquid fast separating process is all flocculating setting, the flocculation aid and wadding introduced
Solidifying agent is all new pollutant, and the effect of flocculating setting is also uncontrollable.With the continuous improvement that Environmental Protection in China requires, we have must
Explore some new solid-liquid fast separating process.
Summary of the invention
Electroplating wastewater solid-liquid fast separating process purpose provided by the invention is first is that overcome in the prior art in electroplating wastewater
Treatment process in, most of traditional solid-liquid fast separating process is all flocculating setting, the flocculation aid and flocculant introduced
It is all new pollutant, the effect of flocculating setting also uncontrollable problem；Purpose second is that overcome in the prior art solid-liquid quickly divide
Problem low from method production efficiency, at high cost.
For this purpose, including the following steps: the present invention provides a kind of electroplating wastewater solid-liquid fast separating process
1) pH value of electroplating wastewater is adjusted to 9-10 with Calcium Carbide Ash first, active carbon is then added and is precipitated；
2) the electroplating wastewater dirty solution after step 1) precipitating Drum Vacuum Filter is delivered to be separated by solid-liquid separation.
The additional amount of the step 1) active carbon is the 0.1 ‰ -1 ‰ of electroplating wastewater gross mass.
The particle of the active carbon is -325 mesh of 100 mesh.
The material of the active carbon includes wood activated charcoal, coaly activated carbon or active fruit shell carbon.
The Drum Vacuum Filter includes at least belt conveyer, scraper, vacuum filter, feed liquid dispenser, subtracts
Speed motor, air compressor machine, vacuum pump, moisture trap silencer and Filtrate separator set filter chamber in vacuum filter, and filter chamber can connect
Air compressor machine or vacuum pump are connect, connects scraper on the left of vacuum filter, belt conveyer is located at the lower left of scraper, vacuum filter
Right side connects decelerating motor, and feed liquid dispenser is set to the side of vacuum filter, moisture trap silencer and Filtrate separator
It is all connected with air compressor machine.
Electroplating wastewater dirty solution can be sprayed to vacuum filter by the feed liquid dispenser.
The vacuum degree of the vacuum pump is 0.7-0.8MPa.
The pressure of the air compressor machine is 0.5MPa.
The time of the separation of solid and liquid is 3-5s.
Beneficial effects of the present invention: this electroplating wastewater solid-liquid fast separating process provided by the invention dexterously utilizes
Rotary drum or dish-style vacuum filter are instead of traditional sedimentation basin, compared with conventional electroplating effluent treatment method, the present invention
For method mainly there are four advantage, first advantage is that joined Calcium Carbide Ash and active carbon solves Drum Vacuum Filter appearance
Susceptible to plugging problem；Second advantage is the rate of filtration of rotary drum or dish-style vacuum filter quickly, the precipitating saved
Time (general 4-6 hour), greatly improve production efficiency；Third advantage be cheap and easily-available Calcium Carbide Ash instead of
More expensive liquid alkaline and calcium hydroxide, has substantially saved production cost；4th advantage is to obtain by Drum Vacuum Filter
To producing, water is lower than sedimentation basin delivery turbidity, and COD and total oil content are lower；5th advantage is to eliminate sedimentation basin subsequent
Plate filter further reduced production cost and cost of labor.This electroplating wastewater solid-liquid proposed by the present invention quickly divides
From method, productivity effect is good, is suitble to Large scale processes application.
Detailed description of the invention
The present invention is described in further details below with reference to attached drawing.
Fig. 1 is the structural schematic diagram of Drum Vacuum Filter.
Description of symbols: 1, belt conveyer；2, scraper；3, vacuum filter；4, feed liquid dispenser；5, slow down electricity
Machine；6, air compressor machine；7, vacuum pump；8, moisture trap silencer；9, Filtrate separator；10, filter chamber.
Specific embodiment
Embodiment 1:
A kind of electroplating wastewater solid-liquid fast separating process, includes the following steps:
1) pH value of electroplating wastewater is adjusted to 9-10 with Calcium Carbide Ash first, active carbon is then added and is precipitated；In step 1
Cheap and easily-available Calcium Carbide Ash replaces traditional liquid alkaline or calcium hydroxide to carry out pH adjusting, and production cost can be greatly reduced；
2) the electroplating wastewater dirty solution after step 1) precipitating Drum Vacuum Filter is delivered to be separated by solid-liquid separation.Step
Calcium Carbide Ash and the easy blocking rotary drum vacuum that there are problems that solving of active carbon cross filter in rapid 2, but also plating is useless
The removal rate of the COD of water and total oil has respectively reached 60% and 80% or so.
The additional amount of the step 1) active carbon is the 0.1 ‰ -1 ‰ of electroplating wastewater gross mass.The particle of the active carbon
For -325 mesh of 100 mesh.The material of the active carbon includes wood activated charcoal, coaly activated carbon or active fruit shell carbon.Active carbon
It is at low cost, and Calcium Carbide Ash and active carbon solve the problems, such as that Drum Vacuum Filter is easy blocking.
The Drum Vacuum Filter includes at least belt conveyer 1, scraper 2, vacuum filter 3, feed liquid dispenser
4, decelerating motor 5, air compressor machine 6, vacuum pump 7, moisture trap silencer 8 and Filtrate separator 9 set filter in vacuum filter 3
Room 10, filter chamber 10 can connect air compressor machine 6 or vacuum pump 7, and scraper 2 is connected on the left of vacuum filter 3, and belt conveyer 1, which is located at, to be scraped
The lower left of knife 2, decelerating motor 5 is connected on the right side of vacuum filter 3, and feed liquid dispenser 4 is set to the side of vacuum filter 3, gas
Separator silencer 8 and Filtrate separator 9 are all connected with air compressor machine 6.The feed liquid dispenser 4 can spray electroplating wastewater dirty solution
It spills to vacuum filter 3.The vacuum degree of the vacuum pump 7 is 0.7-0.8MPa.The pressure of the air compressor machine 6 is 0.5MPa.
The working principle of Drum Vacuum Filter are as follows: by dirty solution be delivered to Drum Vacuum Filter liquid storage tank and
Feed liquid dispenser 4 is immersed in liquid storage tank when filtering below the rotary drum of Drum Vacuum Filter and slowly rotates, vacuum filter
3 filter chamber 10 is connected (vacuum degree 0.7-0.8MPa) with vacuum pump 7, sprays in the filtrate and feed liquid dispenser 4 in liquid storage tank
Filtrate be sucked out vacuum filter 3, solid particle is then then attracted on filtering surface, formed filter residue；It is rotated in filter chamber 10
Continue to provide feed liquid to vacuum filter 3 to improve filter efficiency, with filtering by feed liquid dispenser 4 when more than to liquid level
Continuous progress, filter residue thickness is more than that the part of scraper 2 can be laid down, and the filter residue laid down is carried out by belt conveyer 1,
At this moment the filter chamber 10 for touching scraper 2 is connected (pressure 0.5MPa) with air compressor machine 6, and blowback filter cloth loosens filter residue, can dredge filter cloth
Hole is allowed to regenerate.Drum Vacuum Filter is a kind of general ancillary filter equipment, be mainly used for metal removal processing or its
It process in coolant liquid filtering, be also applied for the cleaning solution of blank Cleaning of Parts system, industrial water, organic solution and other
The removing of impurity in solution.It is the key equipment saved resource, prevent public hazards；Drum type vacuum filter is to rely on liquid certainly
The gravity and negative pressure of vacuum of body penetrate filter cloth, and sundries is isolated, to reach purification liquid purpose.Its advantage is that Fluid tank depth adds
Greatly, the utilization rate of filter cloth is higher, and space occupied is few, and operation cost is lower.The present invention is more compared with existing vacuum filter
One group of feed liquid dispenser 4 is higher than existing vacuum filter filter efficiency.
The time of the separation of solid and liquid is 3-5s.The rate of filtration through Drum Vacuum Filter quickly, shortens solid-liquid
Isolated time, while the sedimentation time (general 4-6 hour) saved, greatly improve production efficiency.
Embodiment 2:
A kind of electroplating wastewater solid-liquid fast separating process, includes the following steps:
1) electroplating wastewater is pumped into reaction tank, electroplating wastewater is adjusted to pH to 9.5 with Calcium Carbide Ash, then be added active carbon into
Row precipitating；The additional amount of active carbon is the 1 ‰ of electroplating wastewater gross mass, and the particle of active carbon is 200 mesh, and the material of active carbon is
Coaly activated carbon.
2) the electroplating wastewater dirty solution after step 1) precipitating is pumped into Drum Vacuum Filter to be filtered, filtering carries out
The time of separation of solid and liquid is 4s, and the vacuum degree of vacuum pump 7 is 0.7MPa, and the pressure of air compressor machine 6 is 0.5MPa, rotary drum vacuum mistake
Filter filtering water sample and the water quality testing data that sedimentation basin is discharged are as shown in table 1.
Table 1: Drum Vacuum Filter crosses the water quality comparison of drainage and sedimentation basin water outlet
In above-mentioned implementation, compared with electroplating wastewater raw water, through the filtered water sample COD of Drum Vacuum Filter and always
Oil content reduces 56.1% and 82.5% respectively, and COD and total oily removal rate are apparently higher than sedimentation basin water outlet, rotary drum vacuum
The turbidity that filter crosses drainage is significantly lower than the turbidity of sedimentation basin water outlet.
Embodiment 3:
A kind of electroplating wastewater solid-liquid fast separating process, includes the following steps:
1) electroplating wastewater is pumped into reaction tank, electroplating wastewater is adjusted to pH to 9.0 with Calcium Carbide Ash, then be added active carbon into
Row precipitating；The additional amount of active carbon is the 0.1 ‰ of electroplating wastewater gross mass, and the particle of active carbon is 100 mesh, the material of active carbon
For wood activated charcoal.
2) the electroplating wastewater dirty solution after step 1) precipitating is pumped into Drum Vacuum Filter to be filtered, filtering carries out
The time of separation of solid and liquid is 3s, and the vacuum degree of vacuum pump 7 is 0.75MPa, and the pressure of air compressor machine 6 is 0.5MPa, rotary drum vacuum
Filter filtering water sample and the water quality testing data that sedimentation basin is discharged are as shown in table 2.
Table 2: Drum Vacuum Filter crosses the water quality comparison of drainage and sedimentation basin water outlet
In above-mentioned implementation, compared with electroplating wastewater raw water, through the filtered water sample COD of Drum Vacuum Filter and always
Oil content reduces 58.9% and 83.9% respectively, and COD and total oily removal rate are apparently higher than sedimentation basin water outlet, rotary drum vacuum
The turbidity that filter crosses drainage is significantly lower than the turbidity of sedimentation basin water outlet.
Embodiment 4:
A kind of electroplating wastewater solid-liquid fast separating process, includes the following steps:
1) electroplating wastewater is pumped into reaction tank, electroplating wastewater is adjusted to pH to 10.0 with Calcium Carbide Ash, active carbon is then added
It is precipitated；The additional amount of active carbon is the 0.5 ‰ of electroplating wastewater gross mass, and the particle of active carbon is 325 mesh, the material of active carbon
Matter is active fruit shell carbon.
2) the electroplating wastewater dirty solution after step 1) precipitating is pumped into Drum Vacuum Filter to be filtered, filtering carries out
The time of separation of solid and liquid is 5s, and the vacuum degree of vacuum pump 7 is 0.8MPa, and the pressure of air compressor machine 6 is 0.5MPa, rotary drum vacuum mistake
Filter filtering water sample and the water quality testing data that sedimentation basin is discharged are as shown in table 3.
Table 3: Drum Vacuum Filter crosses the water quality comparison of drainage and sedimentation basin water outlet
In above-mentioned implementation, compared with electroplating wastewater raw water, through the filtered water sample COD of Drum Vacuum Filter and always
Oil content reduces 58.9% and 81.5% respectively, and COD and total oily removal rate are apparently higher than sedimentation basin water outlet, rotary drum vacuum
The turbidity that filter crosses drainage is significantly lower than the turbidity of sedimentation basin water outlet.
In description of the invention, it is to be understood that if the orientation or positional relationship for having the instructions such as term "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only for illustration, Bu Nengli
Solution is the limitation to this patent.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (9)
1. a kind of electroplating wastewater solid-liquid fast separating process, characterized by the following steps:
1) pH value of electroplating wastewater is adjusted to 9-10 with Calcium Carbide Ash first, active carbon is then added and is precipitated；
2) the electroplating wastewater dirty solution after step 1) precipitating Drum Vacuum Filter is delivered to be separated by solid-liquid separation.
2. electroplating wastewater solid-liquid fast separating process as described in claim 1, it is characterised in that: the step 1) active carbon
Additional amount is the 0.1 ‰ -1 ‰ of electroplating wastewater gross mass.
3. electroplating wastewater solid-liquid fast separating process as claimed in claim 2, it is characterised in that: the particle of the active carbon is
- 325 mesh of 100 mesh.
4. electroplating wastewater solid-liquid fast separating process as claimed in claim 3, it is characterised in that: the material packet of the active carbon
Include wood activated charcoal, coaly activated carbon or active fruit shell carbon.
5. electroplating wastewater solid-liquid fast separating process as claimed in claim 4, it is characterised in that: the rotary drum vacuum filter
Device includes at least belt conveyer (1), scraper (2), vacuum filter (3), feed liquid dispenser (4), decelerating motor (5), pneumatics
Machine (6), vacuum pump (7), moisture trap silencer (8) and Filtrate separator (9), vacuum filter (3) is interior to set filter chamber (10),
Filter chamber (10) can connect air compressor machine (6) or vacuum pump (7), connect scraper (2) on the left of vacuum filter (3), belt conveyer (1)
Decelerating motor (5) are connected on the right side of the lower left of scraper (2), vacuum filter (3), feed liquid dispenser (4) is set to vacuum mistake
The side of filter (3), moisture trap silencer (8) and Filtrate separator (9) are all connected with air compressor machine (6).
6. electroplating wastewater solid-liquid fast separating process as claimed in claim 5, it is characterised in that: the feed liquid dispenser (4)
Electroplating wastewater dirty solution can be sprayed to vacuum filter (3).
7. electroplating wastewater solid-liquid fast separating process as claimed in claim 6, it is characterised in that: the vacuum pump (7) it is true
Reciprocal of duty cycle is 0.7-0.8MPa.
8. electroplating wastewater solid-liquid fast separating process as claimed in claim 7, it is characterised in that: the pressure of the air compressor machine (6)
Power is 0.5MPa.
9. electroplating wastewater solid-liquid fast separating process as claimed in claim 8, it is characterised in that: the time of the separation of solid and liquid
For 3-5s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910022590.0A CN109574320A (en) | 2019-01-10 | 2019-01-10 | A kind of electroplating wastewater solid-liquid fast separating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910022590.0A CN109574320A (en) | 2019-01-10 | 2019-01-10 | A kind of electroplating wastewater solid-liquid fast separating process |
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| CN109574320A true CN109574320A (en) | 2019-04-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456702A (en) * | 2020-10-31 | 2021-03-09 | 西安迪奥环保科技有限公司 | DAWT specific high-concentration wastewater solid-liquid separation method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905919A (en) * | 2009-12-25 | 2010-12-08 | 浙江天蓝环保技术有限公司 | Method for processing carbide slag sulfur-containing clear solution by utilizing electroplating zinc-containing wastewater in desulphurization system |
| CN204237646U (en) * | 2014-11-28 | 2015-04-01 | 深圳中科欧泰华环保科技有限公司 | A kind of device utilizing high-pure chlorinedioxide process nickel-containing waste water |
| CN106040168A (en) * | 2016-06-08 | 2016-10-26 | 芜湖市长江起重设备制造有限公司 | High-dispersity crane electroplating wastewater treating agent and preparation method thereof |
-
2019
- 2019-01-10 CN CN201910022590.0A patent/CN109574320A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101905919A (en) * | 2009-12-25 | 2010-12-08 | 浙江天蓝环保技术有限公司 | Method for processing carbide slag sulfur-containing clear solution by utilizing electroplating zinc-containing wastewater in desulphurization system |
| CN204237646U (en) * | 2014-11-28 | 2015-04-01 | 深圳中科欧泰华环保科技有限公司 | A kind of device utilizing high-pure chlorinedioxide process nickel-containing waste water |
| CN106040168A (en) * | 2016-06-08 | 2016-10-26 | 芜湖市长江起重设备制造有限公司 | High-dispersity crane electroplating wastewater treating agent and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 中南矿冶学院选矿教研组: "《选矿厂脱水集尘》", 武汉理工大学出版社, pages: 136 - 78 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456702A (en) * | 2020-10-31 | 2021-03-09 | 西安迪奥环保科技有限公司 | DAWT specific high-concentration wastewater solid-liquid separation method and device |
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