CN104003550B - Copper-containing wastewater treatment system - Google Patents
Copper-containing wastewater treatment system Download PDFInfo
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- CN104003550B CN104003550B CN201410225420.XA CN201410225420A CN104003550B CN 104003550 B CN104003550 B CN 104003550B CN 201410225420 A CN201410225420 A CN 201410225420A CN 104003550 B CN104003550 B CN 104003550B
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Abstract
Present invention is disclosed a kind of copper-containing wastewater treatment system, 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 conjunction pond of complex reaction is carried out brokenly to copper-containing wastewater; Be connected with contact break reaction tank, and regulate copper-containing wastewater pH to the second pH regulator pond of alkalescence; And the fast mixed pond connected successively after contact break tower, slowly mixed pond, settling tank and neutralization tank.This system can remove the cupric ion of in waste water 95%, embodies the advantage effectively removing the cupric ion in waste water, and it is simple to have structure, and treatment process is simple, with low cost, can the advantage such as Treatment of Copper waste water in large quantity.
Description
Technical field
The present invention relates to a kind of Waste Water Treatment, particularly relate 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 the compound that complex ion and the ion with different electric charge form is called complex compound.The pollutent contained in complexing heavy metal waste water is not biodegradable, has very strong toxicity, carcinogenic by food chain accumulation in vivo.Copper-containing wastewater also belongs to the one of complexing heavy metal waste water, mainly because heavy metal copper ion is easily combined with various organic acid the complex compound being formed and not easily degrade, 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 moderate water-cut stage 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 can effective Treatment of Copper waste water, the treatment system that cost is cheap again.
Summary of the invention
The object of the invention is to, for above-mentioned defect of the prior art, provide a kind of copper-containing wastewater treatment system, this system architecture is simple, with low cost, and effectively can remove the cupric ion in waste water.
For achieving the above object, present invention employs 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 conjunction pond of complex reaction is carried out brokenly to copper-containing wastewater; Be connected with contact break reaction tank, and regulate copper-containing wastewater pH to the second pH regulator pond of alkalescence; And the fast mixed pond connected successively after the second pH regulator pond, slowly mixed pond, settling tank and neutralization tank.
In addition, the present invention also provides following attached technical scheme:
Described contact break is closed pond and is comprised contact break conjunction 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 storage mud, and this sludge sump and described settling tank are interconnected.
Described copper-containing wastewater treatment system also comprises chemicals dosing plant, and this chemicals dosing plant comprises: the sour dosing parts be connected with described first pH regulator pond and neutralization tank respectively; The contact break mixture dosing parts that pond is connected are closed with described contact break; The alkali dosing parts be connected with described second pH regulator pond; The coagulating agent dosing parts be connected with described fast mixed pond; And the flocculation agent dosing parts to be connected with described slow mixed pond.
PH controller is provided with in described first pH regulator pond, the second pH regulator pond and neutralization tank.
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, enters described contact break and close pond, this contact break is closed pond and is comprised contact break conjunction filler; 2) add contact break mixture, there is broken complex reaction in copper-containing wastewater under this contact break mixture and contact break close filler effect, and the reaction times is 20 minutes; 3) to step 2) contact break close after copper-containing wastewater in add alkali, its pH value is adjusted to 8 ~ 9; 4) add coagulating agent again, add-on is 50 ~ 60 liters per hour, 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 comprise iron filings, rare earth and silicon class material.
Described step 2) contact break mixture be S-WAT, its concentration is 10%, and 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 ‰.
Compared to prior art, advantage of the present invention is: disclose a kind of copper-containing wastewater treatment system, this system comprises the water collecting basin connected successively, first pH regulator pond, pond is closed in contact break, second pH regulator pond, fast mixed pond, slow mixed pond, settling tank and neutralization tank, by carrying out pH regulator to copper-containing wastewater, the cupric ion of in waste water 95% is removed in the broken reaction such as complex reaction and coagulation-flocculation, embody the advantage effectively removing the cupric ion in waste water, and it is simple that this system also has structure, treatment process is simple, with low cost, can the advantage such as Treatment of Copper waste water in large quantity.
Accompanying drawing explanation
Fig. 1 is the copper-containing wastewater treatment system schema corresponding to present pre-ferred embodiments.
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 water collecting basin 1, the first pH regulator pond 2, the contact break that connect successively and closes pH regulator pond 4, pond 3, second, fast mixed pond 5, slow mixed pond 6, settling tank 7 and neutralization tank 8, 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 S-WAT, alkali is sodium hydroxide, and coagulating agent is polymerize aluminum chloride, and flocculation agent is polyacrylamide; Aeration stirrer is separately positioned in water collecting basin 1, first pH regulator pond 2, contact break conjunction pH regulator pond 4, pond 3, second, fast mixed pond 5 and neutralization tank 8, and it can accelerate the mixing velocity of pharmacy response and copper-containing wastewater, thus plays the effect of Reaction time shorten; Sludge sump 14 and settling tank 7 are interconnected and for splendid attire mud.
Particularly, water collecting basin 1 is a storage copper-containing wastewater and provides the storage facility of copper-containing wastewater charging, be configured with lift pump 21 and fluid level controller (not shown), just controlled by this fluid level controller after lift pump 21 starts, when liquid level is too low, lift pump 21 can automatically stop, and when liquid level reaches setting height again, lift pump 21 can restart.
With lift pump 21, the copper-containing wastewater of water collecting basin 1 is drawn into the first pH regulator pond 2, flooding quantity is 10 cubes per hour.Acid dosing parts 11a is connected with the first pH regulator pond 2, and therefore, this first pH regulator pond 2 Main Function is to acid by the pH regulator of copper-containing wastewater.This first pH regulator pond 2 is also configured with pH controller (not shown), it can the pH value of copper-containing wastewater in detection cell in real time, and controls sour dosing parts 11a according to the pH value detected and work, and copper-containing wastewater is after regulating, its pH is in acid, 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 in pond 3 and is filled with contact break conjunction filler (not shown), the core that filler is closed in contact break is filler, it is made up of several indissoluble solids, these insoluble solid materials comprise iron filings, rare earth and silicon class material, it utilizes the potential difference between self component to provide the electrochemical reaction energy, need not additional power source, and electrochemical reaction is carried out in the same old way.Can be there is broken complex reaction except needs contact break and close filler in copper-containing wastewater, also need contact break mixture, and therefore contact break mixture chemicals dosing plant 11b and contact break are closed pond 3 and be connected, and drop into contact break mixture in pond, and this contact break mixture the best is S-WAT.
Contact break closes 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 drop into alkaline solution in pond, and this alkaline solution the best is sodium hydroxide solution.Second pH regulator pond 4 is configured with pH controller (not shown), can 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 detected, copper-containing wastewater is after regulating, its pH is in 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, and in pond, drop into coagulating agent, 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 in mixed pond 6 slowly to this, and flocculation agent the best is polyacrylamide; Be provided with stirrer (not shown) in slow mixed pond 7, coagulation process is accelerated in the effect of this stirrer, improves reaction efficiency.
Copper-containing wastewater after coagulation-flocculation enters settling tank 7 and precipitin reaction occurs, settling tank 8 is inclined tube-type settling tank, natural sedimentation is there is in copper-containing wastewater in settling tank 7, the mud precipitated extracts through residual sea water pump 17, and being delivered in sludge sump 14, supernatant liquid is then from flowing into neutralization tank 8.Acid dosing parts 11a is also connected with neutralization tank 8, adds acid solution, i.e. sulphuric acid soln to pond, and regulate the pH of copper-containing wastewater to neutral, certainly, slightly acidic or weakly alkaline also conform with the regulations, and namely pH value is 6 ~ 8.Copper-containing wastewater meets emission regulation after neutralization, can discharge it.
The method of above-mentioned copper-containing wastewater treatment system Treatment of Copper waste water is utilized to comprise the steps:
1) start lift pump 21, the copper-containing wastewater extracted in water collecting basin 1 enters in the first pH regulator pond 2, simultaneously, pH controller controls sour dosing parts 11a and works, and adds sulfuric acid, the pH value of copper-containing wastewater is adjusted to 2 to copper-containing wastewater, afterwards, waste water enters contact break and closes pond 3.
2) after copper-containing wastewater enters contact break conjunction 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, there is broken complex reaction in the effect that copper-containing wastewater closes filler at contact break mixture and contact break, the reaction times is 20 minutes.
The mechanism of contact break reaction is: close in the electric field of filler formation in contact break, and when waste water closes filler by contact break, electrodeposit reaction occurs, metal copper ion closes in filler in contact break, is reduced into metal and removes, be: Cu with chemical formulation at negative electrode
2++ 2e → Cu ↓.
3) through step 2) contact break close after copper-containing wastewater enter the second pH regulator pond 4, meanwhile, pH controller controls alkali dosing parts 11c work, adds sodium hydroxide, its pH value is adjusted to 9 to copper-containing wastewater.
4) step 3) regulate after alkaline copper-containing wastewater enter 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 suspended particle in water coagulate the alumen ustum of wadding a quilt with cotton into Large stone.
5) copper-containing wastewater after coagulation-flocculation is from flowing into settling tank 7, and carry out precipitin reaction, 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, and namely pH regulator is 6 ~ 8 meet emission regulation.
7), after errorless after testing, can discharge.
In sum, through this copper-containing wastewater treatment system process copper-containing wastewater again, cupric ion can eliminate 95%; It can thus be appreciated that copper-containing wastewater treatment system structure is simple, treatment process is simple, with low cost, and can Treatment of Copper waste water in large quantity, and effectively can also remove the cupric ion in waste water.
It is pointed out that above-mentioned preferred embodiment is only and technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
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 conjunction pond of complex reaction is carried out brokenly to copper-containing wastewater;
Be connected with contact break reaction tank, and regulate copper-containing wastewater pH to the second pH regulator pond of alkalescence;
And the fast mixed pond connected successively after the second pH regulator pond, slowly mixed pond, settling tank and neutralization tank.
2. copper-containing wastewater treatment system according to claim 1, is characterized in that: described contact break is closed pond and comprised contact break conjunction 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, it is characterized in that it also comprises the sludge sump of storage mud, this sludge sump and described settling tank are interconnected.
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 be connected with described first pH regulator pond and neutralization tank respectively;
The contact break mixture dosing parts that pond is connected are closed with described contact break;
The alkali dosing parts be connected with described second pH regulator pond;
The coagulating agent dosing parts be connected with described fast mixed pond; And
The flocculation agent dosing parts be connected with described slow mixed pond.
5. copper-containing wastewater treatment system according to claim 1, is characterized in that: be provided with pH controller in described first pH regulator pond, the second pH regulator pond and neutralization tank.
6. the treatment process of the copper-containing wastewater treatment system according to any one of claim 1 to 5, 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 contact break conjunction filler;
2) add contact break mixture, there is broken complex reaction in copper-containing wastewater under this contact break mixture and contact break close filler effect, and the reaction times is 20 minutes, and described contact break mixture is S-WAT, and its mass percent concentration is 10%, and add-on is 40 ~ 50 liters per hour;
3) to step 2) contact break close after copper-containing wastewater in add alkali, its pH value is adjusted to 8 ~ 9;
4) add coagulating agent again, add-on is 50 ~ 60 liters per hour, 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; Described coagulating agent is polymeric aluminum chlorides solution, and its mass percent concentration is 10% ~ 30%; Described flocculation agent is polyacrylamide, and its mass percent concentration is 1 ‰;
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 comprise iron filings, rare earth and silicon class material.
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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 |
| CN107686190A (en) * | 2017-09-23 | 2018-02-13 | 大连函量科技发展有限公司 | A kind of cupric heavy metal waste water treatment system |
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| US20030136742A1 (en) * | 2002-01-23 | 2003-07-24 | Bersbach Ann Nahed | Wastewater treatment process using 8856 (A&B) to remove metals from wastewater |
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