CN1020119C - Full-automatic electroplating waste water treatment technology with maximum energy-saving - Google Patents
Full-automatic electroplating waste water treatment technology with maximum energy-saving Download PDFInfo
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- CN1020119C CN1020119C CN 90108499 CN90108499A CN1020119C CN 1020119 C CN1020119 C CN 1020119C CN 90108499 CN90108499 CN 90108499 CN 90108499 A CN90108499 A CN 90108499A CN 1020119 C CN1020119 C CN 1020119C
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- automatic
- waste water
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- chamber
- rinsing tank
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Abstract
The present invention relates to a processing technique for full-automatic electroplating waste water, which adopts a rinse technique for a circulator 4 without energy consumption and a big circulation sleeve, and a chemical automatic control method. The present invention can realize the aims of little initial investment, low operating cost, no energy consumption, automatic deposition, separation, filtration, dewatering and outside discharge of heavy metal ions, automatic cycle of waste water, effective control on the PH value (six to nine)of the waste water and the concentration of the heavy metal ions (the concentration is at least 50 times lower of that of national discharge standards), saving water for electroplating by 75%, high recoverable value of the heavy metal ion, no secondary pollution, no corrosion prevention of electric appliances and full automatic processing of the electroplating waste water are realized.
Description
The present invention relates to electroplating waste water treatment technology, particularly relate to full-automatic electroplating waste water treatment process and isolated plant.
In the prior art, in " handling electroplated heavy metals ion composite waste flow reactor and automatic control technology " literary composition of " electroplating and environmental protection " 1989 the 3rd phases of magazine, introduced PWA type duct type composite waste of electrolytic plating technology for automatically treating and realized that electroplating wastewater is lower than discharging standards.But because this technology is to adopt electronic controls and the outer treatment process of electroplating assembly line, thereby exist investment high, energy consumption big (power consumption consumption alkaline consumption water), and there is heavy metal ion nickel (8.2-8.8) precipitation under the pH of this technical stipulation value condition incomplete, can not save defectives such as Electroplating Production water, in order to overcome these defectives, the inventor has carried out the development of energy-conservation full-automatic electroplating waste water treatment process and isolated plant.
An object of the present invention is to provide a kind of pH value and the concentration of heavy metal ion of electroplating wastewater after processing that make and to reach discharging standards, non-secondary pollution, the full-automatic electroplating waste water treatment process of no power consumption own, gas consumption, water consumption, acid consumption, alkaline consumption.
Another object of the present invention provides that a kind of one-time investment is low, and working cost is few, no energy consumption itself, and the sedimentary automatic filtration of heavy metal ion, dehydration effluxes, the isolated plant of the full-automatic electroplating waste water treatment process of waste water automated cycle.
Method of the present invention is to use a kind of isolated plant to carry out systemic circulation rinsing technology and chemistry control automatically.Systemic circulation rinsing technology is the poaching wastewater of different nature more than three strands or three strands in the electroplating assembly line, reconfigures mutual utilization, and has utilized the strong basicity secondary sedimentation heavy metal ion of the rinsing tank that deoils, and guarantees environmental benefit.It is with the electroplate rinsing tank, flows into the rinsing tank that deoils by pipeline, flows into the acidic rinse tank by pipeline again,, enters in the electroplate rinsing tank circulation repeatedly (part effluxes) through the isolated plant effect.But single systemic circulation rinsing technology does not reach the purpose of full automatic treatment waste water, also needs and automatically control coupling of chemistry, and when reason was Electroplating Production, the drag-out of acid, alkali often can not balance, needed the pH value of further regulator solution.Utilize the alkalescence in the rinsing tank that deoils to come the precipitation of heavy metals ion in addition as fully, reuse is difficulty quite, may cause secondary pollution.
Chemistry control automatically is to utilize chemical process control electroplating wastewater processing process, promptly heavy metal ion in the electroplating wastewater and pH value is adjusted automatically and is controlled, and makes electroplating wastewater every Environmental indicators after treatment reach discharging standards.At first adopting accumulator tank to reclaim to the heavy metal ion in the electroplating wastewater, then by the automatic control agent of WT(chemistry) control flume generates precipitation of hydroxide for the first time and carries out separation of heavy metal ions.Generating precipitation of hydroxide for the second time by the rinsing tank that deoils again separates, and the pH value in the electroplating wastewater processing is at first adopted pH value in the automatic control agent control flume of chemistry, again the alkaline waste water clear liquid is flowed into acid stream rinsing tank generation neutralization reaction, too much acid neutralizes.
Isolated plant provided by the invention is to take out the ripple device by vacuum to insert upper fixed seat through hole in the water outlet and automatic slag-draining device and outer lumen pore in the solid-liquid separator respectively by its arm, and the inner chamber of automatic slag-draining device leans on it to have valve K
3Conduit insert bucket in the solid-liquid separator, by on it, lower fixed seat is connected on the solid-liquid separator and constitutes.
Solid-liquid separator is to be divided into upper and lower two Room by the median septum that microporous filter tube is housed in the plastic cylinder that seals, the water-in of following chamber communicates with centrifugal chamber on being positioned at porous plate, following termination one bucket of plastic cylinder, last chamber have the water outlet that communicates with the arm of vacuumfilter to constitute.
Automatic slag-draining device is by being divided into inner chamber with the micropore wave duct in the plastic cylinder of a sealing, exocoel, its lower end is furnished with the rotating piston that is used for deslagging, the middle part has to be allowed in the vacuumfilter arm insert the solid seat of going up of through hole to communicate with its exocoel, the upper end inner chamber have communicate with bucket in the solid-liquid separator have a valve K
3Conduit, connect on solid-liquid separator, lower fixed seat constitutes.The regeneration that can recoil automatically of microporous filter tube in automatic slag-draining device and the solid-liquid separator is used continuously.
Vacuumfilter is by connecting a nozzle on vacuum chamber 17 tops, nozzle top with have valve K
3Running water pipe communicate, both sides respectively be connected to communicate with the through hole of upper fixed seat and water outlet have a valve K
2, K
1Arm constitute.It is that tap water used when using electroplate rinsing is a power, when tap water during through nozzle, forms high-speed jet and makes vacuum chamber produce vacuum, is passed to solid-liquid separator and automatic slag-draining device forms vacuum in succession through arm.
Fig. 1 is a skeleton diagram of the present invention.
Fig. 2 is a process flow sheet of the present invention.
Fig. 3 is an isolated plant structure iron of the present invention.
Fig. 4 is the process flow sheet of prior art.
In the accompanying drawings, 1-electroplate rinsing tank, the 2-rinse tank that deoils, 3-pickling drift ice groove, 4-isolated plant, the 5-solid-liquid separator, 6-automatic slag-draining device, 7-porous plate, 8-median septum, 9-bucket, chamber under the 10-, the last chamber of 11-, 12-upper fixed seat, 13-lower fixed seat, 14-exocoel, the 15-inner chamber, the 16-rotating piston, the 17-vacuum chamber, 18,18 '-arm, the 19-nozzle, the 20-water-in, 21,21 '-microporous filter tube, the 22-centrifugal chamber, 23-vacuumfilter, 24-water outlet, 25-conduit.
Embodiments of the invention:
At first in conjunction with the accompanying drawings, the working process to inventive method is further described:
During Electroplating Production, must open water valve K from the beginning
STo carry out rinsing, it is power that isolated plant 4 is used tap water, produce vacuum to promote the water level of pickling-rinsing tank 3, meanwhile, tap water enters electroplate rinsing tank 1 with treated waste water, make its water level rise (part effluxes) with the flow direction rinsing tank 2 that deoils, the rinsing tank 2 that deoils flows to pickling-rinsing tank 3 because of waterhead, forms systemic circulation rinsing system.Carry out the while in Electroplating Production, constantly take heavy metal ion and acid out of, alkali enters the rinsing system, should in time adopt chemistry automatically control controlled, the waste water of discharging reached or be lower than emission standard because of family.Heavy metal ion in the electroplating wastewater has 99% heavy metal ion to be trapped behind accumulator tank after measured, remaining 1% heavy metal ion after the WT control flume generates precipitate and separate for the first time, concentration of heavy metal ion [Me in the electroplate rinsing tank 1
N+]＜1X10
-2Mg/l, the waste water in the electroplate rinsing tank 1 deoil its pH value of rinsing tank 2(for 10-11 along with the systemic circulation rinsing enters) after, heavy metal ion generates precipitate and separate for the second time, its concentration [Me
N+]＜1X10
-3Mg/L.
Then in conjunction with the accompanying drawings, the schedule of operation to isolated plant of the present invention further specifies:
Opening water valve K from the beginning
SWhen carrying out the Electroplating Production rinsing, with valve K
1, K
2, K
3Open K
4Close, vacuumfilter 23 is started working in the isolated plant 4, make solid-liquid separator 5 and automatic slag-draining device 6 produce vacuum, force the waste water in the pickling-rinsing tank 3 to enter it down in the centrifugal chamber 22 in chamber 10 by water-in 20 in the solid-liquid separator 5, because of the centrifugal bump effect, the little material of solid is grown up and is descended in bucket 9, waste water is after microporous filter tube 21 filters, enter chamber 11, again through water outlet 24, arm 18 ' enter the vacuum chamber 17 in the vacuumfilter 23 enters electroplate rinsing tank 1 together with tap water, and circulation is more than.Meanwhile, automatic slag-draining device 6 produces vacuum, and the precipitation in the bucket 9 connects the inner chamber 15 that water enters automatic slag-draining device 6 together, waste water through microporous filter tube 21 ', exocoel 14, arm 18 enter the vacuum chamber 17 in the vacuumfilter 23, inject electroplate rinsing tank 1, circulation is more than.Slag is gathered in the lower end of automatic slag-draining device 6 after dehydration, when it reaches a certain amount of, and automatic slag-draining device rotation 36 degree, rotating piston 16 is opened automatically, and slag sinks to discharging because of gravity, after slag has been arranged, automatic slag-draining device derotation 36 degree, rotating piston 16 is closed automatically.
When handling the precipitation of electroplating in accumulator tank or the WT control flume, shut-off valve K
3, open valve K
4, automatic filtration deslagging such as above-mentioned carrying out after filtration finishes, are opened valve K
3, shut-off valve K
4Just.
In a word, electroplating wastewater after treatment, [Me in the water outlet
N+]≤1X10
-3Mg/L, the pH value is 6-9, has guaranteed environmental benefit, has realized the full automatic treatment of four programs in the electroplating wastewater process; Be the full-automatic circulation rinsing of waste water, the automatic precipitate and separate of heavy metal ion; The automatic adjustment of pH value in the wastewater treatment process; Sedimentary automatic filtration effluxes.As long as open rinsing water valve K from the beginning in the electroplating process
S, whole process is carried out automatically.When Electroplating Production stops, shut-off valve K
S, whole process stops automatically, operates very simple.
The good effect that the present invention produces with prior art phase specific energy:
1. one-time investment is low, and the operation expense is few.
2. the no power consumption of the inventive method itself, gas consumption, water consumption, acid consumption, alkaline consumption, the no energy consumption of the special-purpose device of the present invention itself.
3. plating production and wastewater treatment are carried out simultaneously, and the waste water of processing through the present invention can be used as the plating industrial water, thereby can save plating industrial water (reaching 75%).
4. electroplating wastewater meets discharging standards after treatment, and its concentration of heavy metal ion can be lower than discharging standards 1/50).
5. heavy metal removal can be returned coating bath after transition and use, improve recovery value, non-secondary pollution.
6. not having electrical equipment, not have part anticorrosion, long service life.
Claims (2)
1, a kind of full-automatic electroplating waste water treatment process is characterized in that:
The systemic circulation rinse processing method is to flow into the rinsing tank (2) that deoils by electroplate rinsing tank (1) by pipeline, flow into pickling-rinsing tank (3) by pipeline again, act on through isolated plant (4), remove precipitations such as heavy metal hydroxide, clear liquid enters electroplate rinsing tank (1) again, circulation constitutes repeatedly
Respectively receive groove before once at pickling-rinsing tank (3) and electroplate rinsing tank (1), adopt the automatic control agent of chemistry to control herein, make heavy metal ion generate precipitation such as precipitation of hydroxide and remove, again alkaline waste water inflow pickling-rinsing groove (3) with the too much acid that neutralizes
When using said device, at first open water valve K from the beginning
SCarry out the Electroplating Production rinsing, and with valve K
1, K
2, K
3Open K
4Close, waste water in the pickling-rinsing tank enters in the centrifugal chamber (22) by water-in (20), filter through micropore wave duct (21), enter chamber (11), again through water outlet (24), arm (18 ') enters the vacuum chamber (17) that vacuum is taken out ripple device (23), discharges then, simultaneously, precipitation in the bucket (9) connects the inner chamber (15) that water enters automatic slag-draining device (6) in the lump, waste water is through micropore wave duct (21 '), exocoel (14), the through hole of upper fixed seat (12), arm (18) enters the vacuum chamber (17) of vacuumfilter (23), discharge then, slag deposits is in the lower end of automatic slag-draining device (6), when it reaches a certain amount of, automatic slag-draining device (6) rotation, rotating piston (16) is opened automatically, it is discharged back automatic slag-draining device (6) restore to the original state, and piston (16) is closed automatically.
2, a kind of isolated plant in the described method of claim 1 is characterized in that: it is taken out ripple device (23) by solid-liquid separator (5), automatic slag-draining device (6) and vacuum and forms,
Said liquid/gas separator (5) is to be divided into by the median septum (8) that microporous filter tube (21) are housed in the plastic cylinder that seals.Following two Room (11), (10), the water-in (20) of following chamber (10) communicates following termination one bucket (9) of plastic cylinder with centrifugal chamber (22) on being positioned at porous plate (7), last chamber (11) has takes out the water outlet (24) that the arm (18 ') of ripple device (23) communicates with vacuum and constitutes
Said automatic slag-draining device (6) contains a sealed plastic cylinder, be divided into inner chamber (15) with microporous filter tube (21 ') in it, exocoel (14), its lower end is furnished with the rotating piston (16) that is used for deslagging, exocoel (14) middle part has a hole to communicate with the arm (18) of vacuumfilter (23) and the hole of upper fixed seat (12), and upper end inner chamber (15) has a band valve K
3Conduit (25) communicate with the bucket (9) of solid-liquid separator (5),
It is to connect a nozzle (19) on vacuum chamber (17) top that said vacuum is taken out ripple device (23), nozzle (19) top with have a valve K
3Running water pipe communicate, both sides respectively connect communicate with the through hole of upper fixed seat (12) and water outlet (24) have a valve K
2, K
1Arm (18), (18 ') constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108499 CN1020119C (en) | 1990-10-24 | 1990-10-24 | Full-automatic electroplating waste water treatment technology with maximum energy-saving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108499 CN1020119C (en) | 1990-10-24 | 1990-10-24 | Full-automatic electroplating waste water treatment technology with maximum energy-saving |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051206A CN1051206A (en) | 1991-05-08 |
| CN1020119C true CN1020119C (en) | 1993-03-17 |
Family
ID=4881010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108499 Expired - Fee Related CN1020119C (en) | 1990-10-24 | 1990-10-24 | Full-automatic electroplating waste water treatment technology with maximum energy-saving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020119C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674330A (en) * | 2014-03-25 | 2015-06-03 | 胡国绵 | Electroplating zero-wastewater emission engineering technology |
| US10294579B2 (en) * | 2016-04-05 | 2019-05-21 | Snap-On Incorporated | Portable and modular production electroplating system |
-
1990
- 1990-10-24 CN CN 90108499 patent/CN1020119C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1051206A (en) | 1991-05-08 |
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