CN104003550A - Copper-containing wastewater treatment system - Google Patents
Copper-containing wastewater treatment system Download PDFInfo
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- CN104003550A CN104003550A CN201410225420.XA CN201410225420A CN104003550A CN 104003550 A CN104003550 A CN 104003550A CN 201410225420 A CN201410225420 A CN 201410225420A CN 104003550 A CN104003550 A CN 104003550A
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Abstract
The invention discloses a copper-containing wastewater treatment system which comprises a water collecting pond, a first pH regulating pond, a complexing breaking pond, a second pH regulating pond, a fast mixing pond, a slow mixing pond, a sedimentation pond and a neutralization pond, wherein the water collecting pond stores copper-containing wastewater and feeds copper-containing wastewater; the first pH regulating pond is connected with the water collecting pond and regulates the pH of the copper-containing wastewater to acidity; the complexing breaking pond is connected with the first pH regulating pond and carries out complexing breaking reaction on the copper-containing wastewater; the second pH regulating pond is connected with the complexing breaking reaction pond and regulates the pH of the copper-containing wastewater to alkalinity; the fast mixing pond, the slow mixing pond, the sedimentation pond and the neutralization pond are sequentially connected behind a complexing breaking tower. The copper-containing wastewater treatment system disclosed by the invention can be used for removing 95% of copper ions contained in the copper-containing wastewater, reflects the advantage of effectively removing the copper ions contained in the copper-containing wastewater and has the advantages of simple structure, simple treatment method, low cost, large-batch copper-containing wastewater treatment and the like.
Description
Technical field
The present invention relates to a kind of Waste Water Treatment, relate in particular to a kind of copper-containing wastewater treatment system.
Background technology
Along with the development of electronic industry, the quantity discharged of heavy metal wastewater thereby increases year by year, and the use of complexing agent makes the composition of heavy metal wastewater thereby more complicated, therefore produces again a kind of complexing heavy metal waste water.The complicated ions that every ligand (lewis' acid) that can give lone pair electron by two or more and the central ion (or atom) with suitable unoccupied orbital are combined into is complex ion, and complex ion is called complex compound with the compound that the ion with different electric charge forms.The pollutent containing in complexing heavy metal waste water is not biodegradable, has very strong toxicity, can be carcinogenic by accumulation in vivo of food chain.Copper-containing wastewater also belongs to the one of complexing heavy metal waste water, mainly to form because heavy metal copper ion is easily combined with various organic acids the complex compound that is difficult for degraded, compared with the heavy metal ion of free state, the removal difficulty of the heavy metal ion of complex state is larger, the common alkali neutralization precipitation method that adds is difficult to obtain satisfied treatment effect, and the apparatus structure of some current Treatment of Copper waste water is too complicated, cause price too expensive, cost performance is not high, therefore be necessary to provide a set of effectively Treatment of Copper waste water, cost cheap treatment system again.
Summary of the invention
The object of the invention is to, for above-mentioned defect of the prior art, provides a kind of copper-containing wastewater treatment system, and this system architecture is simple, with low cost, and can effectively remove the cupric ion in waste water.
For achieving the above object, the present invention has adopted following technical scheme: a kind of copper-containing wastewater treatment system, is characterized in that it comprises: storage copper-containing wastewater also provides the water collecting basin of copper-containing wastewater charging; Be connected with water collecting basin, and regulate copper-containing wastewater pH to the first acid pH regulator pond; Be connected with the first pH regulator pond, and the contact break that copper-containing wastewater breaks complex reaction is closed to pond; Be connected with contact break reaction tank, and regulate the second pH regulator pond of copper-containing wastewater pH to alkalescence; And the fast mixed pond connecting successively after contact break tower, mixed pond, settling tank and neutralization tank slowly.
In addition, the present invention also provides following attached technical scheme:
Described contact break is closed pond and is comprised that contact break closes filler, and this contact break is closed filler and comprised iron filings, rare earth and silicon class material.
Described copper-containing wastewater treatment system also comprises the sludge sump of storing mud, and this sludge sump and described settling tank interconnect.
Described copper-containing wastewater treatment system also comprises chemicals dosing plant, and this chemicals dosing plant comprises: the sour dosing parts that are connected with described the first pH regulator pond and neutralization tank respectively; Close with described contact break the contact break mixture dosing parts that pond is connected; The alkali dosing parts that are connected with described the second pH regulator pond; The coagulating agent dosing parts that are connected with described fast mixed pond; And the flocculation agent dosing parts that are connected with described slow mixed pond.
In described the first pH regulator pond, the second pH regulator pond and neutralization tank, be provided with pH controller.
A treatment process for copper-containing wastewater treatment system described in basis, is characterized in that it comprises the steps: 1) in copper-containing wastewater, add acid, its pH value is adjusted to 2～3, afterwards, enter described contact break and close pond, this contact break is closed pond and is comprised that contact break closes filler; 2) add contact break mixture, close the broken complex reaction of copper-containing wastewater generation under filler effect at this contact break mixture and contact break, the reaction times is 20 minutes; 3) to step 2) add alkali in copper-containing wastewater after contact break is closed, its pH value is adjusted to 8～9; 4) add coagulating agent, add-on is 50～60 liters per hour again, and the reaction times is 20～30 minutes, afterwards, add flocculation agent and constantly stir, the add-on of flocculation agent is 15～20 liters per hour, reaction times is 10～15 minutes, and stirring velocity is 1440 revs/min; 5) by step 4) copper-containing wastewater after coagulation-flocculation precipitates, and sedimentation time is 100～120 minutes, and supernatant liquid flows into described neutralization tank afterwards; And 6) to step 5) copper-containing wastewater of neutralization tank adds acid, is 6～8 by its pH regulator.
Described step 1) and 2) contact break close filler and comprise iron filings, rare earth and silicon class material.
Described step 2) contact break mixture be S-WAT, its concentration is 10%, add-on is 40～50 liters per hour.
Described step 5) in coagulating agent be polymeric aluminum chlorides solution, its concentration is 10%～30%.
Described step 5) in flocculation agent be polyacrylamide, its concentration is 1 ‰.
Than prior art, advantage of the present invention is: disclosed a kind of copper-containing wastewater treatment system, this system comprises the water collecting basin connecting successively, the first pH regulator pond, pond is closed in contact break, the second pH regulator pond, fast mixed pond, slow mixed pond, settling tank and neutralization tank, by copper-containing wastewater is carried out to pH regulator, 95% cupric ion in the reaction removal waste water such as broken complex reaction and coagulation-flocculation, embody the advantage of effectively removing the cupric ion in waste water, and this system also has simple in structure, treatment process is simple, with low cost, the advantage such as Treatment of Copper waste water in large quantity.
Brief description of the drawings
Fig. 1 is the copper-containing wastewater treatment system schema corresponding to preferred embodiment of the present invention.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing thereof, technical solution of the present invention is further non-limitingly described in detail.
Shown in Fig. 1 is the basic procedure of copper-containing wastewater treatment system, as can be seen from Figure, this copper-containing wastewater treatment system mainly comprises that successively the water collecting basin 1, the first pH regulator pond 2, the contact break that connect close pond 3, the second pH regulator pond 4, mixed pond 5, mixed pond 6, settling tank 7 and neutralization tank 8 slowly soon, also comprises chemicals dosing plant 11, aeration stirrer (not shown) and sludge sump 14 simultaneously.Particularly, chemicals dosing plant 11 comprises sour dosing parts 11a, contact break mixture dosing parts 11b, alkali dosing parts 11c, coagulating agent dosing parts 11d and flocculation agent dosing parts 11e, above-mentioned each dosing parts splendid attire acid, contact break mixture, alkali, coagulating agent and flocculation agent respectively, in the present embodiment, acid is sulfuric acid, contact break mixture is that S-WAT, alkali are sodium hydroxide, and coagulating agent is polymerize aluminum chloride, and flocculation agent is polyacrylamide; Aeration stirrer is separately positioned on water collecting basin 1, the first pH regulator pond 2, contact break and closes in pond 3, the second pH regulator pond 4, soon mixed pond 5 and neutralization tank 8, and it can accelerate the mixing velocity of pharmacy response and copper-containing wastewater, thereby plays the effect of Reaction time shorten; 14 of sludge sumps interconnect with settling tank 7 and for splendid attire mud.
Particularly, water collecting basin 1 is a storage copper-containing wastewater the storage facility that copper-containing wastewater charging is provided, dispose lift pump 21 and fluid level controller (not shown), lift pump 21 starts rear just by this fluid level controller control, in the time that liquid level is too low, lift pump 21 can stop automatically, and when liquid level reaches setting height again, lift pump 21 can restart.
The copper-containing wastewater of water collecting basin 1 is drawn into the first pH regulator pond 2 with lift pump 21, flooding quantity is 10 cubes per hour.Acid dosing parts 11a is connected with the first pH regulator pond 2, and therefore, these the first pH regulator pond 2 Main Functions are to acid by the pH regulator of copper-containing wastewater.On this first pH regulator pond 2, also dispose pH controller (not shown), it is the pH value of the interior copper-containing wastewater of detection cell in real time, and controls sour dosing parts 11a work according to the pH value detecting, copper-containing wastewater is after regulating, it is acid that its pH is, and best pH value is 2.
The lower end that pond 3 is closed in the lower end in the first pH regulator pond 2 and contact break is interconnected, contact break is closed and in pond 3, is filled with contact break and closes filler (not shown), the core that filler is closed in contact break is filler, it is made up of several indissoluble solids, these indissoluble solid matters comprise iron filings, rare earth and silicon class material, it utilizes the potential difference between self component that the electrochemical reaction energy is provided, needn't additional power source, and electrochemical reaction is carried out in the same old way.Can there is broken complex reaction and close filler except needs contact break in copper-containing wastewater, also need contact break mixture, and therefore contact break mixture chemicals dosing plant 11b closes pond 3 with contact break and is connected, and drops into contact break mixture in pond, and this contact break mixture the best is S-WAT.
Contact break is closed the upper strata copper-containing wastewater in pond 3 from flowing in the second pH regulator pond 4, and alkali chemicals dosing plant 11c is connected with this second pH regulator pond 4, can in pond, drop into alkaline solution, and this alkaline solution the best is sodium hydroxide solution.On the second pH regulator pond 4, dispose pH controller (not shown), the pH value of copper-containing wastewater in detection cell in real time, and control alkali dosing parts 11c work according to the pH value detecting, and copper-containing wastewater is after regulating, and its pH is alkalescence, and best pH value is 9.
Alkaline copper-containing wastewater after the second pH regulator pond 4 regulates flows in fast mixed pond 5 from lower to upper, and coagulant drug-adding device 11d is connected with fast mixed pond 5, in pond, drops into coagulating agent, and this coagulating agent the best is polymerize aluminum chloride.The bottom in fast mixed pond 5 is interconnected with the bottom in slow mixed pond 6, and flocculation agent dosing parts 11e adds flocculation agent to this slowly mixed pond 6, and flocculation agent the best is polyacrylamide; In slow mixed pond 7, be provided with stirrer (not shown), the effect of this stirrer is to accelerate coagulation process, improves reaction efficiency.
Copper-containing wastewater after coagulation-flocculation enters settling tank 7 precipitin reaction occurs, settling tank 8 is inclined tube-type settling tank, copper-containing wastewater is in the interior generation natural sedimentation of settling tank 7, the mud precipitating extracts through residual sea water pump 17, and be delivered in sludge sump 14, supernatant liquid is from flowing into neutralization tank 8.Acid dosing parts 11a is also connected with neutralization tank 8, adds acid solution to pond, i.e. sulphuric acid soln regulates the pH of copper-containing wastewater to neutral, and certainly, slightly acidic or weakly alkaline also conform with the regulations, and pH value is 6～8.Copper-containing wastewater meets emission regulation after neutralization, can discharge it.
Utilize the method for above-mentioned copper-containing wastewater treatment system Treatment of Copper waste water to comprise the steps:
1) start lift pump 21, the copper-containing wastewater extracting in water collecting basin 1 enters in the first pH regulator pond 2, simultaneously, pH controller control acid dosing parts 11a work, adds sulfuric acid to copper-containing wastewater, and the pH value of copper-containing wastewater is adjusted to 2, afterwards, waste water enters contact break and closes pond 3.
2) copper-containing wastewater enters contact break and closes behind pond 3, contact break mixture dosing parts 11b adds contact break mixture in pond, contact break mixture is S-WAT, concentration is 10%, add-on is 40 liters per hour, copper-containing wastewater closes the broken complex reaction of effect generation of filler in contact break mixture and contact break, the reaction times is 20 minutes.
The mechanism of contact break reaction is: close in the electric field that filler forms in contact break, electrodeposit reaction occurs in the time that waste water closes filler by contact break, metal copper ion closes in filler in contact break, is reduced into metal and removes at negative electrode, with chemical formulation is: Cu
2++ 2e → Cu ↓.
3) through step 2) copper-containing wastewater after contact break is closed enters the second pH regulator pond 4, and meanwhile, pH controller control control alkali dosing parts 11c work, adds sodium hydroxide to copper-containing wastewater, and its pH value is adjusted to 9.
4) step 3) alkaline copper-containing wastewater after regulating enters fast mixed pond 5 and slow mixed pond 6 successively.Particularly, in fast mixed pond 5, coagulating agent dosing parts 11d adds polymerize aluminum chloride to fast mixed pond 5, and its concentration is 30%, and add-on is 50 liters per hour, and the reaction times is 20 minutes; In slow mixed pond 6, flocculation agent dosing parts 11e adds polyacrylamide to slow mixed pond 6, and stirrer constantly stirs simultaneously, and the concentration of polyacrylamide is 1 ‰, and add-on is 15 liters per hour, and the reaction times is 15 minutes, and stirring velocity is 1440 revs/min.Fast mixed pond 5 and slow mixed pond 6 can make copper-containing wastewater produce coagulation and throwing out, make the solidifying alumen ustum of wadding a quilt with cotton into large particle diameter of suspended particle in water.
5) copper-containing wastewater after coagulation-flocculation, from flowing into settling tank 7, carries out precipitin reaction, and sedimentation time is 120 minutes, and afterwards, supernatant liquid flows into neutralization tank 8.
6) sour dosing parts 11a adds sulfuric acid in neutralization tank, and by the pH regulator of copper-containing wastewater, to neutral, certainly, slightly acidic and weakly alkaline also conform with the regulations, pH regulator is 6～8th, meets emission regulation.
7) after errorless after testing, can discharge.
In sum, process copper-containing wastewater again through this copper-containing wastewater treatment system, cupric ion can eliminate 95%; Hence one can see that, and copper-containing wastewater treatment system is simple in structure, and treatment process is simple, with low cost, and Treatment of Copper waste water in large quantity, and can also effectively remove the cupric ion in waste water.
It is pointed out that above-mentioned preferred embodiment is only explanation technical conceive of the present invention and feature, its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that spirit is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. a copper-containing wastewater treatment system, is characterized in that it comprises:
Storage copper-containing wastewater also provides the water collecting basin of copper-containing wastewater charging;
Be connected with water collecting basin, and regulate copper-containing wastewater pH to the first acid pH regulator pond;
Be connected with the first pH regulator pond, and the contact break that copper-containing wastewater breaks complex reaction is closed to pond;
Be connected with contact break reaction tank, and regulate the second pH regulator pond of copper-containing wastewater pH to alkalescence;
And the fast mixed pond connecting successively after contact break tower, mixed pond, settling tank and neutralization tank slowly.
2. copper-containing wastewater treatment system according to claim 1, is characterized in that: described contact break is closed pond and comprised that contact break closes filler, and this contact break is closed filler and comprised iron filings, rare earth and silicon class material.
3. copper-containing wastewater treatment system according to claim 1, is characterized in that it also comprises the sludge sump of storing mud, and this sludge sump and described settling tank interconnect.
4. copper-containing wastewater treatment system according to claim 1, is characterized in that it also comprises chemicals dosing plant, and this chemicals dosing plant comprises:
The sour dosing parts that are connected with described the first pH regulator pond and neutralization tank respectively;
Close with described contact break the contact break mixture dosing parts that pond is connected;
The alkali dosing parts that are connected with described the second pH regulator pond;
The coagulating agent dosing parts that are connected with described fast mixed pond; And
The flocculation agent dosing parts that are connected with described slow mixed pond.
5. copper-containing wastewater treatment system according to claim 1, is characterized in that: in described the first pH regulator pond, the second pH regulator pond and neutralization tank, be provided with pH controller.
6. according to the treatment process of the copper-containing wastewater treatment system described in claim 1 to 5 any one, it is characterized in that it comprises the steps:
1) in copper-containing wastewater, add acid, its pH value is adjusted to 2～3, afterwards, enter described contact break and close pond, this contact break is closed pond and is comprised that contact break closes filler;
2) add contact break mixture, close the broken complex reaction of copper-containing wastewater generation under filler effect at this contact break mixture and contact break, the reaction times is 20 minutes;
3) to step 2) add alkali in copper-containing wastewater after contact break is closed, its pH value is adjusted to 8～9;
4) add coagulating agent, add-on is 50～60 liters per hour again, and the reaction times is 20～30 minutes, afterwards, add flocculation agent and constantly stir, the add-on of flocculation agent is 15～20 liters per hour, reaction times is 10～15 minutes, and stirring velocity is 1440 revs/min;
5) by step 4) copper-containing wastewater after coagulation-flocculation precipitates, and sedimentation time is 100～120 minutes, and supernatant liquid flows into described neutralization tank afterwards; And
6) to step 5) copper-containing wastewater of neutralization tank adds acid, is 6～8 by its pH regulator.
7. the treatment process of copper-containing wastewater treatment system according to claim 6, is characterized in that: described step 1) and 2) contact break close filler and comprise iron filings, rare earth and silicon class material.
8. the treatment process of copper-containing wastewater treatment system according to claim 6, is characterized in that: described step 2) contact break mixture be S-WAT, its concentration is 10%, add-on is 40～50 liters per hour.
9. the treatment process of copper-containing wastewater treatment system according to claim 6, is characterized in that: described step 5) in coagulating agent be polymeric aluminum chlorides solution, its concentration is 10%～30%.
10. the treatment process of copper-containing wastewater treatment system according to claim 6, is characterized in that: described step 5) in flocculation agent be polyacrylamide, its concentration is 1 ‰.
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| CN104773865A (en) * | 2015-03-17 | 2015-07-15 | 成都赋阳技术开发有限公司 | Printed circuit board complex wastewater processing device |
| CN104944698A (en) * | 2015-06-12 | 2015-09-30 | 湖南景翌湘台环保高新技术开发有限公司 | Two-level copper removing technology for treating low-concentration comprehensive wastewater in PCB electroplating |
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Address after: High tech Zone Suzhou city Jiangsu province 215151 intercity Road No. 101 (Xuguan Industrial Park) Patentee after: Suzhou Zhonghe Environmental Protection Technology Co., Ltd. Address before: High tech Zone Suzhou city Jiangsu province 215151 intercity Road No. 101 (Xuguan Industrial Park) Patentee before: The crowd of Suzhou City and solid waste recycling company limited |