The ferric trichloride etching solution regeneration device and method of cupric, nickel and chromium
Technical field
The present invention relates to field of Environment Protection technology, the ferric trichloride etching solution for referring in particular to a kind of cupric, nickel and chromium regenerates back
Use device and method.
Background technology
In the ferric trichloride waste water of the etching machine production line cleaning section discharge of PCB and electroplating enterprise, containing substantial amounts of copper,
Nickel, chromium etc..During blowdown, after ferric trichloride waste water is typically mixed with the waste water containing the metallic element such as golden, stanniferous, dirt is emitted into together
Water treating pond, adds general precipitation reagent in processing pond, carries out initial chemical reaction, part metallic element is simply reclaimed
Afterwards, i.e., these sewage are discharged.This simple sewage treatmentmethod of the above, metallic element recovery utilization rate is very low,
In addition, carrying out sewage disposal again after making various metals mixed liquor dual disposal, specific aim is not strong, causes cost of sewage disposal mistake
It is high.In addition national sewage discharge defines discharge standard to copper, nickel, chromium at present, if simple sewage disposal discharge as described above,
The intractable discharging standards of cupric, nickel, chrome waste water can not typically be reached.
The content of the invention
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of cupric, nickel and chromium to the present invention
Ferric trichloride etching solution regeneration device and method, there is remarkable in economical benefits, operation and maintenance simply and automatically to change for it
The high advantage of degree.
To achieve the above object, the present invention is using following technical scheme:
The ferric trichloride etching solution regeneration equipment of a kind of cupric, nickel and chromium, includes
The supervising device of liquid medicine parameter for regulating and controlling ferric trichloride etching solution is installed in one etching machine, etching machine;
Waste liquid in one waste collection groove, etching machine is flowed into by the first pipeline to be collected in waste collection groove;
Waste liquid in waste collection groove, is pumped into the waste tank by one waste tank by one first sewage pump by second pipe
Stored;
One ion-exchange membrane electrolyzer, ionic membrane electricity is pumped into by one second sewage pump by the 3rd pipeline by the waste liquid in waste tank
Solution groove is electrolysed, and ion-exchange membrane electrolyzer includes anode region and cathodic region;
One circulating slot, circulating slot includes anode circulation groove and cathode circulation groove, anolyte after ion-exchange membrane electrolyzer electrolysis and
Catholyte is flowed into anode circulation groove and in cathode circulation groove through the 4th pipeline and the 5th pipeline respectively, the sun in anode circulation groove
Pole liquid is pumped into above-mentioned etching machine through one first high-pressure pump by the 6th pipeline, the catholyte in cathode circulation groove after temperature adjustment by
The cathodic region that one second high-pressure pump is pumped into ion-exchange membrane electrolyzer by the 7th pipeline constitutes a circulation.
As a kind of preferred scheme, level sensor is installed in the waste collection groove, when reaching liquid level, by upper
State the first sewage pump and extract waste liquid automatically into waste tank.
As a kind of preferred scheme, the anode region is provided with coating titanium anode plate, using electro-catalytic coating electrode as anode.
As a kind of preferred scheme, the titanium cooling tube for regulating and controlling catholyte temperature is installed in the cathode circulation groove.
As a kind of preferred scheme, exhaust apertures are offered on the electrolysis with ion-exchange film cell wall, waste gas is through discharge of pipes to useless
Aspiration tower acid-base neutralization spray process.
The ferric trichloride etching solution method for reclaiming of a kind of cupric, nickel and chromium, using the ferric trichloride of cupric, nickel and chromium
Etching solution regeneration equipment, comprises the following steps:
(1)Collect:To etching production line discharge cupric, nickel, chromium ferric trichloride waste liquid carry out be recycled to waste collection groove and
In waste tank;
(2)Electrolysis:Waste liquid in waste tank is pumped into the ion-exchange membrane electrolyzer to be electrolysed, copper, nickel, chromium plate shape is obtained and closes
Gold;
(3)Parameter adjustment:It is electrolysed extraction raffinate and flows into laggard trip temperature regulation and control and pH value adjustment in circulating slot;
(4)Recycle:Be electrolysed extraction raffinate through parameter adjustment it is up to standard after, circulated in ion-exchange membrane electrolyzer and etching machine is drawn back
Use.
The present invention has clear advantage and beneficial effect compared with prior art, specifically, by above-mentioned technical proposal
Understand:
Ferric trichloride etching solution is regenerated by using electrolysis with ion-exchange film technique, the technique is a kind of online regeneration technology,
Ferric trichloride etching solution copper, nickel, chromium ion concentration reduction after regeneration, oxidation-reduction potential, which is reached, to be required, can be recycled, and again
Crude drug water stability is good, oxidant 70%-90% can be saved after reuse, copper, nickel, the chromium shape alloy of recovery can direct marketings, economy
Remarkable benefit, and the stabilization of equipment performance is good, Operation and Maintenance is simple, and automaticity is high.
More clearly to illustrate the architectural feature and effect of the present invention, come below in conjunction with the accompanying drawings with specific embodiment to this hair
It is bright to be described in detail.
Brief description of the drawings
Fig. 1 is the structural representation of the preferred embodiments of the invention.
Accompanying drawing identifier declaration:
10th, etching machine 11, supervising device
20th, waste collection groove 21, level sensor
30th, waste tank 31, the first sewage pump
32nd, the second sewage pump 40, ion-exchange membrane electrolyzer
401st, exhaust apertures 41, anode region
42nd, cathodic region 43, coating titanium anode plate
44th, minus plate 50, circulating slot
51st, anode circulation groove 52, cathode circulation groove
53rd, titanium cooling tube 60, tabular alloy
71st, the first high-pressure pump 72, the second high-pressure pump.
Embodiment
It refer to shown in Fig. 1, that show the ferric trichloride etching solution regeneration of a kind of cupric of the invention, nickel and chromium
The concrete structure of the preferred embodiment of equipment, include an etching machine 10, a waste collection groove 20, a waste tank 30, one from
The sub- circulating slot 50 of membrane electrolysis cells 40 and one.
The production line of etching machine 10 is produced to be provided with industrial cupric, nickel, the ferric trichloride waste liquid of chromium ion, etching machine 10
Etching solution parameter monitoring device 11, by test oxidation reduction potential value, proportion, acidity and the temperature of ferric trichloride etching solution come
Automatically control the liquid medicine parameter of the ferric trichloride etching solution in stainless steel etching machine 10.
The waste collection groove 20 is connected with etching machine 10, specifically, and the waste liquid in etching machine 10 passes through the first pipeline
Flow into and 20 be collected in waste collection groove, the waste tank 30 is by one first sewage pump 31 by second pipe by waste collection
Waste liquid in groove 20 is pumped into the waste tank 30 and carries out storage tank, specifically, and liquid level sensing is provided with waste collection groove 20
Device 21, when reaching liquid level, waste liquid is extracted by above-mentioned first sewage pump 31 into waste tank 30 automatically.
Ferric trichloride waste liquid is pumped into by the waste liquid in the waste tank 30 by one second sewage pump 32 by the 3rd pipeline should
Ion-exchange membrane electrolyzer 40 is electrolysed, and ion-exchange membrane electrolyzer 40 includes anode region 41 and cathodic region 42, and the anode region 41 is carried out
Etching solution oxidation regeneration, specifically, anode region 41 are provided with coating titanium anode plate 43, using electro-catalytic coating electrode as anode,
Using the potential difference of anode and anolyte as reacting driving force, the ferrous complex ion of divalence of anode surface is set to be oxidized to ferric iron network
Ion is closed, the oxidation regeneration of spent etching solution is realized, regeneration liquid medicine stability is good, and oxidant 70%-90% can be saved after reuse, adjusts
The parameter such as oxidation-reduction potential and proportion reaches that stainless steel etches the state modulator scope return etching machine 10 of normal production requirement
Use;The foreign metal ions such as copper, nickel, chromium are reclaimed for tabular alloy 60 in the cathodic region 42, the foreign metal ion such as copper, nickel, chromium
Catholyte after reduction is returned in regeneration ferric trichloride etching solution, in the case where electrochemical potential can be promoted, the surface of minus plate 44,
The foreign metal ions such as nickel, chromium are reduced to zero-valent metal simple substance, thus separated out on minus plate 44 commercially valuable copper, nickel,
Chromium plate shape alloy 60, can direct marketing.
The circulating slot 50 includes anode circulation groove 51 and cathode circulation groove 52, the anode after the electrolysis of ion-exchange membrane electrolyzer 40
Liquid and catholyte are flowed into anode circulation groove 51 and in cathode circulation groove 52 through the 4th and the 5th pipeline respectively, anode circulation groove 51
Interior anolyte is pumped into above-mentioned etching machine 10 through one first high-pressure pump 71 by the 6th pipeline, the negative electrode in cathode circulation groove 52
The cathodic region 42 that liquid is pumped into ion-exchange membrane electrolyzer 40 by one second high-pressure pump 72 after temperature adjustment by the 7th pipeline constitutes one and followed
Ring, specifically, is provided with titanium cooling tube 53 in cathode circulation groove 52, catholyte temperature is automatically controlled by temperature control inductor, cloudy
Pole circulating slot 52 constitutes a circulation with ion-exchange membrane electrolyzer cathodic region 42, and a keeping temperature is constant and makes electrolyte copper ion dense
Spend stepless action.
Exhaust apertures 401 are offered on the wall of ion-exchange membrane electrolyzer 40, waste gas is through discharge of pipes into waste gas absorption tower soda acid
And spray process.
The invention also discloses the ferric trichloride etching solution regeneration method of a kind of cupric, nickel and chromium, contain which employs foregoing
The ferric trichloride etching solution regeneration equipment of copper, nickel and chromium, comprises the following steps:
(1)Collect:The ferric trichloride waste liquid of the cupric, nickel, chromium of etching production line discharge is carried out being recycled to waste collection groove 20
In waste tank 30;
(2)Electrolysis:Waste liquid in waste tank 30 is pumped into the ion-exchange membrane electrolyzer 40 to be electrolysed, copper, nickel, chromium plate shape is obtained
Alloy 60;
(3)Parameter adjustment:It is electrolysed extraction raffinate and flows into laggard trip temperature regulation and control and pH value adjustment in circulating slot 50;
(4)Recycle:Be electrolysed extraction raffinate through parameter adjustment it is up to standard after, in ion-exchange membrane electrolyzer 40 and etching machine 10 is drawn back carry out
Recycle.
The design focal point of the present invention is:
Ferric trichloride etching solution is regenerated by using electrolysis with ion-exchange film technique, the technique is a kind of online regeneration technology,
Ferric trichloride etching solution copper, nickel, chromium ion concentration reduction after regeneration, oxidation-reduction potential, which is reached, to be required, can be recycled, and again
Crude drug water stability is good, oxidant 70%-90% can be saved after reuse, copper, nickel, the chromium shape alloy of recovery can direct marketings, economy
Remarkable benefit, and the stabilization of equipment performance is good, Operation and Maintenance is simple, and automaticity is high.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore any subtle modifications, equivalent variations and modifications that every technical spirit according to the present invention is made to above example, still
Belong in the range of technical solution of the present invention.