CN208700781U - Mixing waste water treatment system is electroplated - Google Patents
Mixing waste water treatment system is electroplated Download PDFInfo
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- CN208700781U CN208700781U CN201821292176.9U CN201821292176U CN208700781U CN 208700781 U CN208700781 U CN 208700781U CN 201821292176 U CN201821292176 U CN 201821292176U CN 208700781 U CN208700781 U CN 208700781U
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- pond
- waste water
- conditioning tank
- broken cyanide
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- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The utility model discloses a kind of plating mixing waste water treatment systems, including pass through sequentially connected first conditioning tank of pipeline, level-one broken cyanide pond, second level broken cyanide pond, the second conditioning tank, acidification pool, first order reaction pond, second order reaction pond, neutralization pond and UF membrane pond.The advantages of the utility model utilizes the principle of " initial oxidation broken cyanide is restored except chromium ", handles plating mixing waste water, has total system simple, high treating effect.On the one hand sodium hypochlorite is generated by adding sodium hydroxide into waste water and being passed through chlorine, it is removed to destroy cyanide, and then solve the problems, such as that conventional method sodium hypochlorite is labile, on the other hand by the way that activated-charcoal column is arranged in the second conditioning tank, utilize the hexavalent chromium of the suction-operated removal part of activated-charcoal column, reduce the usage amount of reagent, furthermore hexavalent chromium is sufficiently reduced to by trivalent chromic ion by second-stage reduction, in addition, replace sedimentation basin by UF membrane pond, so that outlet effect is highly stable, and it is not easily susceptible to variation water quality, medicament reacts the influence of the factors such as bad.
Description
Technical field
The utility model relates to a kind of plating mixing waste water treatment systems.
Background technique
Major pollutants in electroplating wastewater are each metal ion species, such as chromium, copper, nickel, zinc, tin, gold, silver, cadmium, iron,
Followed by acids and alkaloids, some also contain cyanide.Also added in various plating solutions various brighteners, detergent,
The organic substances such as surfactant；In addition, there are also the impurity such as oil, metal oxide to bring into electroplating wastewater in plating piece.
It is focused on and is required according to electroplating wastewater, according to the demand of water quality situation and resource reclaim, Domestic Plating is useless at present
Water is broadly divided into seven class waste water: pre-treatment oily waste water, cyanide wastewater, nickel-containing waste water, chemical nickel waste water, contains chromium at mixing waste water
Waste water, comprehensive wastewater.Wherein, mixing waste water refers to the pollutant of " run, drip, leak " discharge of electroplating workshop, this effluent part
It is handled together with ground flushing water, the size of amount is related with the equipment in management level and workshop, and major pollutants are a small amount of six
Valence chromium ion, a small amount of cyanide etc..
In the prior art, not ideal enough to the treatment effect of aforementioned mixing waste water, it is ground in the utility model patent application
A kind of processing system specifically for mixing waste water, high treating effect, system run all right, pharmaceutical quantities and other operations are studied carefully
Cost is also relatively reasonable, is suitable for popularization and application.
Utility model content
In order to overcome the problems referred above, the utility model provides a kind of plating mixing waste water treatment system, and which solve tradition to be
Bad, the at high cost problem of system treatment effect.
The technical scheme adopted by the utility model to solve the technical problem is as follows: plating mixing waste water treatment system, including
Pass through sequentially connected first conditioning tank of pipeline, level-one broken cyanide pond, second level broken cyanide pond, the second conditioning tank, acidification pool, first order reaction
Pond, second order reaction pond, neutralization pond and UF membrane pond.Wherein, it is provided in the first conditioning tank for whether waste water in detection cell to be located
In the first pH sensor of alkaline condition, for adding the first feed pipe of sodium hydroxide into the first conditioning tank, and to
The air inlet pipe of chlorine is passed through in one conditioning tank；It is provided in second level broken cyanide pond for whether detecting in second level broken cyanide pond waste water
The 2nd pH sensor in neutrallty condition, for adding the second feed pipe of sulfuric acid into second level broken cyanide pond, and to second level
The third feed pipe of oxidant is added in broken cyanide pond.It is provided with activated-charcoal column in second conditioning tank, by Adsorption waste water
Organic impurities, the acidification pool is equipped with the first online pH control device for adding sulfuric acid, the first order reaction pond,
Second order reaction pond is used for the hexavalent chrome reduction in waste water into trivalent chromium；The neutralization pond is equipped with second for feeding lime
Mud-water separation is realized by the filtration of film in online pH control device, UF membrane pond.
Further, level-one incomplete oxidation is reacted, i.e. it is to complete under alkaline condition, further that the first stage, which reacts,
, above-mentioned alkaline condition refers to that the pH value of waste water in the first conditioning tank is more than or equal to 10.Second level complete oxidation, i.e. second-order
Duan Fanying, complete oxidation are in excessive oxidant and pH value close under neutrallty condition, by CNO-Further oxygenolysis is at CO2With
N2, carbonnitrogen bond is destroyed completely, therefore, above-mentioned neutrallty condition refer to waste water in second level broken cyanide pond pH value be more than or equal to 6 and
Less than or equal to 6.5.Preferably, the oxidant is sodium hypochlorite.
Further, activated-charcoal column is provided in the second conditioning tank, on the other hand one side regulating water quality water passes through suction
Organic impurities in attached removal waste water.Acidification pool is equipped with the first online pH control device for adding sulfuric acid, control acid
Change the pH value in pond between 2.5~3.0.
First order reaction pond, second order reaction pond are used for the hexavalent chrome reduction in waste water at trivalent chromium, specifically, by acidification pool
In waste water be transported in first order reaction pond, reducing agent frerrous chloride is added in first order reaction pond progress level-one reduction, by six
Valence chromium ion is reduced to trivalent chromic ion；Then, the waste water after level-one being restored is guided in second order reaction pond, by reducing agent chlorination
Ferrous iron, which is added in second order reaction pond, carries out second-stage reduction, and the waste water in frerrous chloride and second order reaction pond generates ferric sulfate, will remain
The remaining hexavalent chromium not restored completely is reduced to trivalent chromic ion.
Further, neutralization pond is equipped with the second online pH control device for feeding lime, controls in neutralization pond
PH value between 7~8.
The boosted pump of waste water after neutralization is introduced into UF membrane pond, mud-water separation is realized by the filtration of film, out
Water effect stability, and be not easily susceptible to variation water quality, medicament reacts the influences of the factors such as bad.
Further, in order to promote the removal of chromium, agitating device is additionally provided in the second conditioning tank.
Further, it is additionally provided with flocculation basin between neutralization pond and UF membrane pond, the waste water after neutralization reaction is sent into wadding
Solidifying pond, is added high polymer coagulant in flocculation basin, and the dosage of high polymer coagulant stirs sufficiently based on 2~5mg/L,
10~12min is reacted, the waste water stream after flocculation treatment is finally sent into UF membrane pond.
It further, further include the sludge dewatering equipment being connected with UF membrane pond by pipeline.
The utility model compared with prior art, the advantage is that:
The utility model utilizes the principle of " initial oxidation broken cyanide is restored except chromium ", handles plating mixing waste water, has
There is the advantages of total system is simple, high treating effect.On the one hand it is generated by adding sodium hydroxide into waste water and being passed through chlorine
Sodium hypochlorite so that cyanide be destroyed and removed, and then solves the problems, such as that conventional method sodium hypochlorite is labile, another party
Face removes the hexavalent chromium of part using the suction-operated of activated-charcoal column by the way that activated-charcoal column is arranged in the second conditioning tank,
Reduce the usage amount of reagent, hexavalent chromium is sufficiently furthermore reduced to by trivalent chromic ion by second-stage reduction, in addition, passing through
UF membrane pond replaces sedimentation basin, so that outlet effect is highly stable, and is not easily susceptible to the factors such as variation water quality, medicament reaction be bad
Influence.
Below with reference to drawings and examples, the utility model is described in detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Embodiment,
Referring to Fig. 1, a kind of plating mixing waste water treatment system, including by sequentially connected first conditioning tank 1 of pipeline,
Level-one broken cyanide pond 2, second level broken cyanide pond 3, the second conditioning tank 4, acidification pool 5, first order reaction pond 6, second order reaction pond 7, neutralization pond 8,
Flocculation basin 9, UF membrane pond 10, sludge dewatering equipment 11.
Wherein, the first pH sensing that alkaline condition whether is in for waste water in detection cell is provided in the first conditioning tank 1
Device 12 is passed through chlorine for adding the first feed pipe 13 of sodium hydroxide into the first conditioning tank 1, and into the first conditioning tank
Air inlet pipe 14；The alkaline condition refers to that the pH value of waste water in the first conditioning tank is more than or equal to 10.
The reaction of level-one incomplete oxidation is carried out in level-one broken cyanide pond 2, i.e. it is complete under alkaline condition that the first stage, which reacts,
At:
NaCN+2NaOH+Cl2→NaCNO+2NaCl+H2O
The 2nd pH biography for whether being in neutrallty condition for detecting waste water in second level broken cyanide pond is provided in second level broken cyanide pond 3
Sensor 15 adds hypochlorous acid for adding the second feed pipe 16 of sulfuric acid into second level broken cyanide pond, and into second level broken cyanide pond
The third feed pipe 17 of sodium.The neutrallty condition refers to that the pH value of waste water in second level broken cyanide pond is more than or equal to 6 and is less than or equal to 6.5.
Second level complete oxidation is carried out in second level broken cyanide pond 3, i.e. second stage is reacted, and complete oxidation is in excessive oxidant and pH value
Close under neutrallty condition, by the further oxygenolysis of CNO- at CO2And N2, carbonnitrogen bond is destroyed completely.Above-mentioned oxidant is secondary
Sodium chlorate.That is:
2NaCNO+4NaOH+3Cl2→2CO2+N2+6NaCl+H2O
Activated-charcoal column 18 is provided in second conditioning tank 4, on the other hand one side regulating water quality water passes through Adsorption
Organic impurities in waste water.In order to promote the removal of chromium, agitating device 19 is additionally provided in the second conditioning tank.
Acidification pool 5 is equipped with the first online pH control device 20 for adding sulfuric acid, and the pH value controlled in acidification pool exists
Between 2.5~3.0.
First order reaction pond 6, second order reaction pond 7 are used for the hexavalent chrome reduction in waste water into trivalent chromium.Specifically, will acidification
Waste water in pond 5 is transported in first order reaction pond 6, and reducing agent frerrous chloride is added to progress level-one reduction in first order reaction pond 6,
Hexavalent chromium is reduced to trivalent chromic ion；Then, the waste water after level-one being restored is guided in second order reaction pond 7, will be restored
Agent frerrous chloride, which is added in second order reaction pond 7, carries out second-stage reduction, and the waste water in frerrous chloride and second order reaction pond 7 generates sulfuric acid
The hexavalent chromium that residue does not restore completely is reduced to trivalent chromic ion by iron.
Neutralization pond 8 is equipped with the second online pH control device 21 for feeding lime, controls the pH value in neutralization pond 7
Between~8.
Waste water after neutralization reaction is sent into flocculation basin 9, high polymer coagulant, flocculating polymer are added in flocculation basin 9
The dosage of agent stirs sufficiently based on 2~5mg/L, reacts 10~12min, is finally sent into the waste water stream after flocculation treatment
Mud-water separation is realized by the filtration of film in UF membrane pond 10.
The sludge dewatering equipment 11 being connected by pipeline, sludge dewatering equipment are additionally provided at the sludge discharge hole in UF membrane pond 10
11 are discharged in the second conditioning tank 4 by pipeline by water is deviate from.
The above is only the preferred embodiment to utility model, is not defined to the range of utility model, therefore
Under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to construction described in the utility model, spy
The equivalence changes or decoration that sign and principle are made, should all fall into the protection scope of the utility model.
Claims (6)
1. mixing waste water treatment system is electroplated, it is characterised in that: including broken by sequentially connected first conditioning tank of pipeline, level-one
Cyanogen pond, second level broken cyanide pond, the second conditioning tank, acidification pool, first order reaction pond, second order reaction pond, neutralization pond and UF membrane pond；
Wherein, the first pH sensing that alkaline condition whether is in for waste water in detection cell is provided in first conditioning tank
Device, for adding the first feed pipe of sodium hydroxide into the first conditioning tank, and be passed through into the first conditioning tank chlorine into
Tracheae；The 2nd pH biography for whether being in neutrallty condition for detecting waste water in second level broken cyanide pond is provided in second level broken cyanide pond
Sensor for adding the second feed pipe of sulfuric acid into second level broken cyanide pond, and adds the of oxidant into second level broken cyanide pond
Three feed pipes；
It is provided with activated-charcoal column in second conditioning tank, by the organic impurities in Adsorption waste water, the acidification pool
It is equipped with the first online pH control device for adding sulfuric acid, the first order reaction pond, second order reaction pond are for will be in waste water
Hexavalent chrome reduction at trivalent chromium；The neutralization pond is equipped with the second online pH control device for feeding lime, UF membrane
Pond mud-water separation is realized by the filtration of film.
2. plating mixing waste water treatment system as described in claim 1, it is characterised in that: the alkaline condition refers to the first adjusting
The pH value of waste water is more than or equal to 10 in pond；The neutrallty condition refers to that the pH value of waste water in second level broken cyanide pond is more than or equal to 6 and small
In equal to 6.5.
3. plating mixing waste water treatment system as described in claim 1, it is characterised in that: the oxidant is sodium hypochlorite.
4. plating mixing waste water treatment system as described in claim 1, it is characterised in that: be additionally provided with and stir in second conditioning tank
Mix device.
5. plating mixing waste water treatment system as described in claim 1, it is characterised in that: between the neutralization pond and UF membrane pond
It is additionally provided with flocculation basin.
6. mixing waste water treatment system is electroplated as described in any one of claim 1 to 5, it is characterised in that: further include and UF membrane
The sludge dewatering equipment that pond is connected by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821292176.9U CN208700781U (en) | 2018-08-10 | 2018-08-10 | Mixing waste water treatment system is electroplated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821292176.9U CN208700781U (en) | 2018-08-10 | 2018-08-10 | Mixing waste water treatment system is electroplated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208700781U true CN208700781U (en) | 2019-04-05 |
Family
ID=65942911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821292176.9U Expired - Fee Related CN208700781U (en) | 2018-08-10 | 2018-08-10 | Mixing waste water treatment system is electroplated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208700781U (en) |
-
2018
- 2018-08-10 CN CN201821292176.9U patent/CN208700781U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 Termination date: 20210810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |