CN208345924U - A kind of electroplating wastewater three-level agent-feeding treatment device - Google Patents
A kind of electroplating wastewater three-level agent-feeding treatment device Download PDFInfo
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- CN208345924U CN208345924U CN201820650108.9U CN201820650108U CN208345924U CN 208345924 U CN208345924 U CN 208345924U CN 201820650108 U CN201820650108 U CN 201820650108U CN 208345924 U CN208345924 U CN 208345924U
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Abstract
The utility model provides a kind of electroplating wastewater three-level agent-feeding treatment device, the three-level agent-feeding treatment device includes sequentially connected: conditioning tank, first order reaction pond, first stage precipitation tank, second order reaction pond, second-level settling pond, third-order reaction pond, three-level sedimentation basin and the dosing pump that medicament is added to the first order reaction pond, the second order reaction pond and the third-order reaction pond, and the dosage of the dosing pump is interlocked with the pH measured value of added reaction tank respectively.The utility model realizes that heavy metal adds alkali passivation removal, coagulating sedimentation dephosphorization by adding calcium salt, molysite, aluminium salt and PAM flocculant into reaction tank, and finally by efficient dephosphorization agent, heavy metal is micro- catches agent, realizes to heavy metal, phosphatic fine removal.It is interlocked by optimization adding of agent point, medicament kind and by medicament delivery amount with pH is reacted, on the basis of ensuring treatment effect, reduction sludge dangerous waste yield and medicine as far as possible consumes operating cost.
Description
Technical field
The utility model relates to sewage treatment field, in particular to a kind of electroplating wastewater three-level agent-feeding treatment device.
Background technique
In electroplating industry waste discharge, contain plurality of heavy metal, such as total chromium, Cr VI, nickel, copper, lead, cadmium, and due to adopting
With phosphoric acid pickling, cause rich in high concentration phosphorus hydrochlorate pollutant in waste water, waste water is in acid low pH ranges.If electroplating wastewater without
Processing up to standard is just directly entered sewage network, will generate high risks to downstream wastewater factory.It is existing to be directed to height in electroplating wastewater
Concentration heavy metal processing, it is basic using chemical alkaline chemical precipitation removal, for high concentration phosphorus hydrochlorate, adds molysite or aluminium salt etc. more and remove
Phosphorus agent is cut down.Existing chemistry agent-feeding treatment technology dosage is big, sludge yield is more, and reacts pH and do not join with medicament throwing amount
It is unstable to will cause treatment effect if medicament throwing amount or dosing sequence control are improper for lock.
Therefore, it is necessary to a kind of dosages that can accurately control to be effectively removed the dirts such as heavy metal out of electroplating wastewater, phosphate
Contaminate the device of object.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of electroplating wastewater three-level agent-feeding treatment devices, pass through optimization
Adding of agent point, medicament kind, and medicament delivery amount is interlocked with pH is reacted, can accurately control dosage effectively to go
Except pollutants such as heavy metal out of electroplating wastewater, phosphate, on the basis of ensuring treatment effect, sludge dangerous waste yield is reduced as far as possible
And medicine consumes operating cost.
To solve the above-mentioned problems, the electroplating wastewater three-level agent-feeding treatment device of the utility model includes the three-level dosing
Processing unit include sequentially connected conditioning tank, as the first order reaction pond of coagulation unit and first stage precipitation tank, as two
Grade processing unit second order reaction pond and second-level settling pond, the third-order reaction pond as three stage treatment unit and three-level sedimentation basin,
And multiple dosing pumps of following corresponding medicament are added to the reaction tanks at different levels；The conditioning tank is used for balanced electroplating wastewater
Water quality, water and water temperature；The alkaline pH adjusting agent that pH value in pond is adjusted to first threshold is added in the first order reaction pond, and
First pH meter of real-time monitoring pH value is installed；The first stage precipitation tank is used for the water outlet to the first order reaction pond and carries out muddy water
Just separation；The second order reaction pond is equipped with primary pH regulating tank in leading portion, is equipped with primary coagulation tank, the primary pH tune in back segment
The alkaline pH adjusting agent that pH value in pond is adjusted to second threshold is added in section slot, and the 2nd pH of real-time monitoring pH value is installed
It counts, head has added aluminum salt in the primary coagulation tank；The second-level settling pond is used to the primary coagulation tank
Water is separated by solid-liquid separation；The third-order reaction pond is equipped with secondary pH regulating tank in leading portion, is equipped with secondary coagulation tank in back segment, described
It is added in secondary pH regulating tank and pH value in pond is pulled back into neutral or alkalescence range acidic ph modifier, and reality is installed
When monitor pH value third pH meter, it is described secondary coagulation tank in added aluminum salt；The three-level sedimentation basin is used for institute
The water outlet for stating secondary coagulation tank is separated by solid-liquid separation；The dosage of each dosing pump respectively with the pH of added reaction tank
The measured value of meter interlocks；The first threshold, the second threshold are taken according to the difference of heavy metal out of electroplating wastewater type
Different pH reaction fields.
As the optimal technical scheme of the utility model, the 4th of pH value in real-time monitoring pond is installed in the conditioning tank
PH meter, the dosage for adding the dosing pump of medicament to the first order reaction pond also join with the measured value of the 4th pH meter
Lock.
As the optimal technical scheme of the utility model, the three-level agent-feeding treatment device further includes as tertiary treatment list
The essence of member takes off the pond P and adds efficient dephosphorization agent and the micro- dosing pump for catching agent of heavy metal, the de- P of essence respectively to the de- pond P of the essence
Pond is arranged between the third-order reaction pond and the three-level sedimentation basin.
As the optimal technical scheme of the utility model, the three-level agent-feeding treatment device further includes finally to the second level
The end of reaction tank and the de- pond the P posterior segment of the essence add the dosing pump of flocculant.
As the optimal technical scheme of the utility model, the three-level agent-feeding treatment device further includes to the second order reaction
The primary pH regulating tank in pond and the secondary pH regulating tank in the third-order reaction pond add the dosing pump of iron salt coagulant,
The dosage of the dosing pump is also interlocked with the measured value of the pH meter of added reaction tank respectively.
As the optimal technical scheme of the utility model, the three-level sedimentation basin is additionally provided in monitoring pool in supernatant remaining
The TP monitor of phosphorus content.
As the optimal technical scheme of the utility model, the three-level sedimentation basin is additionally provided in monitoring pool in supernatant remaining
The TP monitor of phosphorus content.
As the optimal technical scheme of the utility model, to the first order reaction pond and the second order reaction pond it is described just
The alkaline pH adjusting agent that grade pH regulating tank adds is the mixed liquor of calcium hydroxide or calcium chloride and lye；To described three
The acidic ph modifier that order reaction pond adds is hydrochloric acid；To the primary coagulation tank of the second order reaction and the third-order reaction
The aluminum salt added in the secondary coagulation tank in pond is PAC.
As the optimal technical scheme of the utility model, after being taken off in the pond P to the end in the second order reaction pond and the essence
The flocculant that section adds is PAM anion.
As the optimal technical scheme of the utility model, to the primary pH regulating tank in the second order reaction pond and described
The iron salt coagulant that the secondary pH regulating tank in third-order reaction pond adds is ferrous sulfate.
The electroplating wastewater three-level chemicals dosing plant of the utility model is by adding alkaline pH adjusting agent (hydroxide into reaction tank
Calcium or calcium chloride and piece lye), iron salt coagulant (ferrous sulfate), aluminum salt (PAC) and flocculant (PAM yin from
Son), it realizes that heavy metal adds alkali passivation removal, coagulating sedimentation dephosphorization, catches agent finally by efficient dephosphorization agent, heavy metal are micro-, realize
To heavy metal, phosphatic fine removal.By optimize adding of agent point, medicament kind, and by medicament delivery amount with react
PH interlocking, can control dosage accurately to be effectively removed the pollutants such as heavy metal out of electroplating wastewater, phosphate, is ensuring to locate
On the basis of managing effect, reduction sludge dangerous waste yield and medicine as far as possible consumes operating cost.
It should be appreciated that aforementioned description substantially and subsequent detailed description are exemplary illustration and explanation, it should not
As the limitation to the claimed content of the utility model.
Detailed description of the invention
With reference to the attached drawing of accompanying, the more purposes of the utility model, function and advantage will pass through the utility model embodiment party
Formula is illustrated described below, in which:
Fig. 1 is the structural schematic diagram for briefly showing the electroplating wastewater three-level agent-feeding treatment device of the utility model.
Specific embodiment
By reference to exemplary embodiment, the purpose of this utility model and function and for realizing these purposes and function
Method will be illustrated.However, the utility model is not limited to exemplary embodiment as disclosed below；It can be by not
It is realized with form.The essence of specification is only to aid in those skilled in the relevant arts' Integrated Understanding the utility model
Detail.
Here, it should also be noted that, in order to avoid having obscured the utility model because of unnecessary details, in the accompanying drawings
It illustrate only the structure and/or processing step closely related with scheme according to the present utility model, and be omitted practical with this
The little other details of new relationship.
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.In the accompanying drawings, identical appended drawing reference represents
Same or similar component or same or like step.
, sludge yield big for existing electroplating waste processing process dosage is more and reaction pH does not join with medicament throwing amount
Lock will cause the problems such as treatment effect is unstable, the utility model provides one kind if medicament throwing amount or dosing sequence control are improper
Electroplating wastewater three-level agent-feeding treatment device.
As shown in Figure 1, the electroplating wastewater three-level agent-feeding treatment device of the utility model includes sequentially connected conditioning tank, one
Order reaction pond, first stage precipitation tank, second order reaction pond, second-level settling pond, third-order reaction pond, three-level sedimentation basin and to each order reaction
Pond adds multiple dosing pumps (being not shown in the figure, only show the medicament that dosing pump is added to each pond body) of corresponding medicament.Wherein, one
Order reaction pond and first stage precipitation tank as coagulation unit, second order reaction pond and second-level settling pond as two stage treatment unit,
Third-order reaction pond and three-level sedimentation basin are as three stage treatment unit.Preferably, fine in order to be carried out to heavy metal and phosphate
Removal, the electroplating wastewater three-level agent-feeding treatment device of the utility model further include the de- pond P of essence as three stage treatment unit, the essence
The de- pond P is between third-order reaction pond and three-level sedimentation basin.
Specifically, electroplating wastewater initially enters conditioning tank, with the water quality, water and water temperature of balanced electroplating wastewater.It is preferred that
, while the 4th pH meter 4 being installed in conditioning tank, to can measure the pH value after stablizing in conditioning tank, and then can accurately control
The dosage in first order reaction pond processed simultaneously obtains better treatment effect.
Then, the water outlet of conditioning tank enters first order reaction pond, and the first pH meter 1, the first pH meter 1 are equipped in first order reaction pond
PH value for liquid in real-time monitoring first order reaction pond.The pH value that dosing pump is measured according to the first pH meter 1 is to first order reaction pond
In add appropriate alkaline pH adjusting agent, preferably calcium hydroxide or calcium chloride and lye mixed liquor etc..That is, the dosage of dosing pump
The pH value measured with the first pH meter 1 interlocks, and the pH value of electroplating wastewater in first order reaction pond is adjusted to first threshold, such as 9~
10 or other numerical value, with specific reference to heavy metal out of electroplating wastewater type it is different depending on.Preferably, the 4th pH meter 4 is being installed
In the case where, the pH value that the pH value and the 4th pH meter 4 that dosing pump is measured according to the first pH meter 1 simultaneously measure is into first order reaction pond
Add appropriate alkaline pH adjusting agent, preferably calcium hydroxide or calcium chloride and lye mixed liquor as described above etc..That is, dosing pump
The pH value that dosage is measured with the first pH meter 1 and the 4th pH meter 4 simultaneously interlocks, by the pH value tune of electroplating wastewater in first order reaction pond
It saves to first threshold.
By interlocked control, after electroplating wastewater is adjusted to first threshold by alkaline pH adjusting agent in first order reaction pond,
It enters first stage precipitation tank progress mud-water separation and the supernatant after separation is then transported to second order reaction pond.
Second order reaction pond is equipped with primary pH regulating tank in leading portion, is equipped with primary coagulation tank in back segment.In primary pH regulating tank
Equipped with the second pH meter 2, the supernatant in first stage precipitation tank after mud-water separation initially enters the primary pH regulating tank in second order reaction pond,
The solution ph that dosing pump is measured according to the second pH meter 2 also adds appropriate alkaline pH adjusting agent, preferably hydrogen to primary pH regulating tank
Calcium oxide or calcium chloride and lye mixed liquor etc..That is, the pH value interlocking that the dosage of dosing pump and the second pH meter 2 measure, it will
The pH value of solution is adjusted to second threshold, such as 10~12 or other numerical value, not with specific reference to heavy metal out of electroplating wastewater type
With depending on.At the same time, if Cr VI tenor is higher in electroplating wastewater, it is also preferred that the pH measured with the second pH meter 2
Value interlocking, adds a certain amount of iron salt coagulant such as ferrous sulfate by dosing pump in primary pH regulating tank, so as to by sexavalence
Chromium metal is reduced to trivalent chromium, then reacts with the basic agent added and generate chromium hydroxide precipitation removal not soluble in water.Waste water
PH value be adjusted to second threshold in primary pH regulating tank after, into primary coagulation tank carry out liquid medicine wadding body hybrid reaction, that is,
Aluminum salt such as PAC is added into primary coagulation tank by dosing pump and carries out coagulating, makes for being difficult to precipitate in solution
Grain can mutually polymerize and form colloid, and bigger floccule body is then formed in conjunction with the impurity in water body.
Preferably, PAM Flokal B is also finally added in second order reaction pond end by dosing pump.Lead to as a result,
Flocculant is added after crossing first dosing coagulant, can be removed the flocculations such as subtle pollutant remaining after coagulation by flocculant,
To obtain better solid-liquid separation effect in second-level settling pond, PAM Flokal B has preferable flocculability, adhesiveness and drop
It is resistive, and PAM Flokal B facile hydrolysis in the solution of 10 or more pH, it is in half reticular structure, plays stronger thickening
Effect.
Next, the water outlet of second-level settling pond enters third-order reaction pond, third-order reaction pond is adjusted in leading portion equipped with secondary pH
Slot, back segment are provided with secondary coagulation tank.Third pH meter 3 is equipped in secondary pH regulating tank, the water outlet of second-level settling pond initially enters
The secondary pH regulating tank in third-order reaction pond, the solution ph that dosing pump is measured according to third pH meter 3 are added to secondary pH regulating tank
Appropriate acidic ph modifier carries out acid-base accommodation, preferably hydrochloric acid.That is, the pH value that the dosage of dosing pump and third pH meter 3 measure
Interlocking, adds appropriate acidic ph modifier, and the pH of waste water is pulled back to neutral or alkalescence range (usually 7~9).It is preferred that
, can also be measured with third pH meter 3 pH value interlocking by dosing pump synchronize add iron salt coagulant, such as ferrous sulfate.By
This, on the one hand can increase wadding body compactness, on the other hand due to that, in acidity, can assist reducing waste water after ferrous sulfate dissolution
PH value reduces the consumption of hydrochloric acid.The pH value of waste water be adjusted to neutrality in secondary pH regulating tank or alkalescence range after, enter
Secondary coagulation tank carries out liquid medicine wadding body hybrid reaction, that is, adds aluminum salt such as PAC into secondary coagulation tank by dosing pump
Carry out coagulating, so that the particle for being difficult to precipitate in solution is mutually polymerize and is formed colloid, then with the impurity knot in water body
It closes and forms bigger floccule body.
After coagulating, the water outlet in third-order reaction pond enters the de- pond P of essence.In the de- pond P of essence, one is added by dosing pump
It is quantitative efficiently except P agent, heavy metal is micro- catches agent, finely to be removed to phosphate, the residual heavy metal in water.Preferably
It is that PAM Flokal B is also finally added in the de- pond the P posterior segment of essence by dosing pump.After passing through first dosing coagulant as a result,
Flocculant is added, can be removed the flocculations such as subtle pollutant remaining after coagulation by flocculant, most so as to the de- pond the P water outlet of essence
Better effect is obtained when carrying out mud-water separation by the way that three-level sedimentation basin is heavy eventually.In addition, being equipped with monitoring pool in three-level sedimentation basin
The TP monitor of remaining phosphorus content in interior supernatant.Water is discharged after water outlet meets discharge standard, the sludge of each pond body precipitating
After dehydration, safe disposal is concentrated as hazardous waste.
The electroplating wastewater three-level chemicals dosing plant of the utility model is by adding alkaline pH adjusting agent (hydroxide into reaction tank
Calcium or calcium chloride and piece lye), iron salt coagulant (ferrous sulfate), aluminum salt (PAC) and flocculant (PAM yin from
Son), it realizes that heavy metal adds alkali passivation removal, coagulating sedimentation dephosphorization, catches agent finally by efficient dephosphorization agent, heavy metal are micro-, realize
To heavy metal, phosphatic fine removal.By optimize adding of agent point, medicament kind, and by medicament delivery amount with react
PH interlocking, can control dosage accurately to be effectively removed the pollutants such as heavy metal out of electroplating wastewater, phosphate, is ensuring to locate
On the basis of managing effect, reduction sludge dangerous waste yield and medicine as far as possible consumes operating cost.
In addition, being illustrated above to the case where the utility model is used for electroplating wastewater processing, but the utility model
It is not limited to this, can also be applied to other water process.In the utility model, describes and/or illustrate for an embodiment
Feature can use in the same manner or in a similar manner in one or more other embodiments, and/or with other realities
The feature for applying mode combine or instead of other embodiments feature.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, the utility model embodiment can have various modifications and variations.All spirit in the utility model
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of electroplating wastewater three-level agent-feeding treatment device, which is characterized in that
The three-level agent-feeding treatment device includes sequentially connected conditioning tank, as the first order reaction pond of coagulation unit and one
Grade sedimentation basin, as the second order reaction pond of two stage treatment unit and second-level settling pond, as the third-order reaction of three stage treatment unit
Pond and three-level sedimentation basin and multiple dosing pumps that following corresponding medicament is added to the reaction tanks at different levels；
The conditioning tank is used for water quality, water and the water temperature of balanced electroplating wastewater；
The alkaline pH adjusting agent that pH value in pond is adjusted to first threshold is added in the first order reaction pond, and real-time prison is installed
Survey the first pH meter of pH value；
The first stage precipitation tank is used for the water outlet to the first order reaction pond and carries out muddy water just separation；
The second order reaction pond is equipped with primary pH regulating tank in leading portion, is equipped with primary coagulation tank in back segment, the primary pH is adjusted
The alkaline pH adjusting agent that pH value in pond is adjusted to second threshold is added in slot, and the 2nd pH of real-time monitoring pH value is installed
It counts, head has added aluminum salt in the primary coagulation tank；
The second-level settling pond is used to be separated by solid-liquid separation the water outlet of the primary coagulation tank；
The third-order reaction pond is equipped with secondary pH regulating tank in leading portion, is equipped with secondary coagulation tank in back segment, the secondary pH is adjusted
It is added in slot and pH value in pond is pulled back into neutral or alkalescence range acidic ph modifier, and real-time monitoring pH value is installed
Third pH meter, it is described secondary coagulation tank in added aluminum salt；
The three-level sedimentation basin is used to be separated by solid-liquid separation the water outlet of the secondary coagulation tank；
The dosage of each dosing pump is interlocked with the measured value of the pH meter of added reaction tank respectively；
The first threshold, the second threshold are to take different pH to react according to the difference of heavy metal out of electroplating wastewater type
Domain.
2. three-level agent-feeding treatment device according to claim 1, which is characterized in that
4th pH meter of pH value in real-time monitoring pond is installed in the conditioning tank,
The dosage for adding the dosing pump of medicament to the first order reaction pond is also interlocked with the measured value of the 4th pH meter.
3. three-level agent-feeding treatment device according to claim 2, which is characterized in that
The three-level agent-feeding treatment device further includes throwing respectively as the de- pond P of essence of three stage treatment unit and to the de- pond P of the essence
Increase effect dephosphorization agent and the micro- dosing pump for catching agent of heavy metal,
The de- pond P of essence is arranged between the third-order reaction pond and the three-level sedimentation basin.
4. three-level agent-feeding treatment device according to claim 3, which is characterized in that
The three-level agent-feeding treatment device further includes finally throwing to the end in the second order reaction pond and the de- pond the P posterior segment of the essence
Add the dosing pump of flocculant.
5. three-level agent-feeding treatment device described according to claim 1~any one of 4, which is characterized in that
The three-level agent-feeding treatment device further includes anti-to the primary pH regulating tank in the second order reaction pond and the three-level
The secondary pH regulating tank of Ying Chi adds the dosing pump of iron salt coagulant, the dosage of the dosing pump also respectively with add it is anti-
The measured value of the pH meter of Ying Chi interlocks.
6. three-level agent-feeding treatment device described according to claim 1~any one of 4, which is characterized in that
The three-level sedimentation basin is additionally provided in monitoring pool the TP monitor of remaining phosphorus content in supernatant.
7. three-level agent-feeding treatment device according to claim 5, which is characterized in that
The three-level sedimentation basin is additionally provided in monitoring pool the TP monitor of remaining phosphorus content in supernatant.
8. three-level agent-feeding treatment device described according to claim 1~any one of 4, which is characterized in that
The alkaline pH adjusting agent added to the primary pH regulating tank in the first order reaction pond and the second order reaction pond is
The mixed liquor of calcium hydroxide or calcium chloride and lye；
The acidic ph modifier added to the third-order reaction pond is hydrochloric acid；
To the second order reaction the primary coagulation tank and the third-order reaction pond the secondary coagulation tank in the aluminium that adds
Salt coagulant is PAC.
9. three-level agent-feeding treatment device according to claim 4, which is characterized in that
The flocculant added to the end in the second order reaction pond and the de- pond the P posterior segment of the essence is PAM anion.
10. three-level agent-feeding treatment device according to claim 5, which is characterized in that
The secondary pH regulating tank of the primary pH regulating tank and the third-order reaction pond to the second order reaction pond adds
Iron salt coagulant be ferrous sulfate.
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| CN201820650108.9U CN208345924U (en) | 2018-05-03 | 2018-05-03 | A kind of electroplating wastewater three-level agent-feeding treatment device |
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| CN201820650108.9U CN208345924U (en) | 2018-05-03 | 2018-05-03 | A kind of electroplating wastewater three-level agent-feeding treatment device |
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