CN207943968U - The system that a kind of acid pickle and pickling waste waters resource utilization for metal surface pickling generation utilizes - Google Patents
The system that a kind of acid pickle and pickling waste waters resource utilization for metal surface pickling generation utilizes Download PDFInfo
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- CN207943968U CN207943968U CN201820152118.XU CN201820152118U CN207943968U CN 207943968 U CN207943968 U CN 207943968U CN 201820152118 U CN201820152118 U CN 201820152118U CN 207943968 U CN207943968 U CN 207943968U
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- pickling
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Abstract
The system that the acid pickle and pickling waste waters resource utilization that the utility model discloses a kind of to generate for metal surface pickling utilize, including pickling unit, acid pickle recovery unit and pickling waste waters recovery unit, the acid pickle recovery unit includes by the sequentially connected acid pickle collecting pit of first pipe, baffled sedimentation tank, adjusts sour pond, crystallization reactor, solid-liquid separating equipment, regenerated acid pond；The pickling waste waters recovery unit includes by the sequentially connected pickling waste waters collecting pit of second pipe, pretreatment pool, electric flocculation integration apparatus, more medium filter, intermediate buffering pond, tubular type ultrafiltration apparatus, reuse pool.The utility model solves the problems, such as that pickling industry generates a large amount of acid pickles but can not recycle, while solving processing and the Recycling of a large amount of pickling waste waters of the sector, with good economic efficiency and environmental benefit.
Description
Technical field
The utility model belongs to environmental protection technical field, and in particular to a kind of spent acid generated for metal surface pickling
The system that liquid and pickling waste waters resource utilization utilize.
Background technology
In metal finishing industry, pickling process is generally comprised, i.e., pending workpiece is soaked in certain density acid
Pickling is carried out in liquid, to remove the pollutants such as grease type, oxide skin of workpiece surface.With the continuous progress of pickling, acid solution
In acid constantly consumption, the pollutants such as salt dissolved out in pickle constantly accumulate, and cause the concentration of acid constantly to reduce, pickling efficiency
It is gradually reduced, therefore acid solution must be replaced after pickling progress a period of time, this results in manufacturing enterprise that can discharge a large amount of spent acid
Liquid.Simultaneously.After workpiece through overpickling must carry out the acid solution of washing removal remained on surface, next process could be entered,
Therefore, pickling process also will produce a large amount of cleaning waste water.
Currently, enterprise is directed to the acid pickle and pickling waste waters of its discharge, milk of lime neutralization or acid pickle is often used to adopt
With evaporative crystallization, pickling waste waters uses the processing method that milk of lime neutralizes.But acid pickle use evaporation process mode when, if
Standby investment is big, and energy waste is more serious；Meanwhile will produce a large amount of acid mist in processing procedure, it is set so as to cause spent acid processing
The air pollution of standby corrosion and surrounding enviroment.When using milk of lime neutralisation treatment pickling waste waters, waste water cannot be thoroughly handled, is given up
Water tends not to reach reuse requirement after treatment, still needs to use a large amount of fresh waters.
Utility model content
Based on the deficiencies of the prior art, being used for what metal surface pickling generated the purpose of this utility model is to provide a kind of
The system that acid pickle and pickling waste waters resource utilization utilize.
To achieve the goals above, the technical solution that the utility model is taken is as follows：
The system that a kind of acid pickle and pickling waste waters resource utilization for metal surface pickling generation utilizes, including acid
Washing machine group, acid pickle recovery unit and pickling waste waters recovery unit, the acid pickle recovery unit include by first pipe according to
The acid pickle collecting pit of secondary connection, adjusts sour pond, crystallization reactor, solid-liquid separating equipment, regenerated acid pond at baffled sedimentation tank, adjusts
The first machine mixer and acidity detector are provided in sour pond；The pickling waste waters recovery unit include by second pipe according to
The pickling waste waters collecting pit of secondary connection, pretreatment pool, electric flocculation integration apparatus, more medium filter, intermediate buffering pond, tubular type
Ultrafiltration apparatus, reuse pool, pickling waste waters collecting pit is interior to be arranged Aeration stirrer, and the second machine mixer is equipped in pretreatment pool
And pH detectors.
Preferably, the sour pond of the tune is connected with acid inlet tube, and the other end of acid inlet tube is connected with acid storage tank, acid inlet tube
On be provided with tune acid pump, adjust and be provided with feed pump, the acidity detector in the first pipe between sour pond and crystallization reactor
It is connected with the first controller, acid pump and feed pump are adjusted in the first controller control connection.
Preferably, the pretreatment tank is connected with alkali inlet tube road, and the other end in alkali inlet tube road is connected with alkali liquid tank, alkali inlet tube
It is provided on road plus alkali pump, the pH detectors is connected with second controller, the second controller control connection plus alkali pump.
Preferably, the pickling waste waters recovery unit further includes sludge concentration tank and filter press, for handling electric flocculation one
The sludge that body equipment generates.
Further, the electric flocculation integration apparatus includes the cell reaction area set gradually, aerating regulation area, stirs and mix
Coagulation zone, precipitation dross area and pH control regions.
The utility model is better than the characteristics of existing treatment technology：
1）Acid pickle processing when, use Multi-level deflector formula sedimentation basin first, by Multi-level deflector can remove grease type,
The pollutants such as sediment optimize the flow condition of follow-up spent acid liquor treating process, avoid the blocking fortune of subsequent treatment process section
The unstable situation of row；It is provided with acid concentration automatic detection device adjusting in sour pond（Acidity detector and the first controller）, real
The automation control of complex acid is showed；High-speed centrifuge can be used in solid-liquid separating equipment, avoids the not quietly property of vacuum pump set；
2）Electric flocculation integration apparatus is used in pickling waste waters processing（ZL201520213700.9）, can effectively go
Except organic pollutions such as oil emulsion, dispersed oil, oil slick in pickling waste waters, to reduce the negative of subsequent treatment process section equipment
Lotus ensure that the stability of waste water treatment system；It is aoxidized by the forced aeration in electrochemistry integrated middle aerating regulation area so that
Excessive ferrous ion in waste water is converted into ferric ion, avoids waste water after treatment due to the shakiness of hydroxide
The problem of qualitative inverse；
3）Tubular type ultrafiltration apparatus is provided with as rear end safeguard in pickling waste waters processing back segment, further removes COD
Equal pollutants are to meet the index request of waste water recycling.
In short, process of the present invention is simple, at low cost, solves pickling industry and generate a large amount of acid pickles but can not recycle
The problem of, while solving processing and the Recycling of a large amount of pickling waste waters of the sector, realize Treatment of Metal Surface enterprise
The resource recycling of the acid pickle and pickling waste waters that are generated in production utilizes, with good economic efficiency and environmental benefit.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the process flow chart utilized to acid pickle and pickling waste waters resource utilization using the utility model.
Specific implementation mode
As shown in Figure 1, what a kind of acid pickle generated for metal surface pickling and pickling waste waters resource utilization utilized
System, including pickling unit 1, acid pickle recovery unit and pickling waste waters recovery unit.
The acid pickle recovery unit includes heavy by the sequentially connected acid pickle collecting pit 2 of first pipe, Multi-level deflector
Sour pond 6, crystallization reactor 13, solid-liquid separating equipment 15, regenerated acid pond 18 are adjusted in shallow lake pond 4.The spent acid that the pickling unit 1 generates
Liquid is conveyed into acid pickle collecting pit 2, and the first pipe between acid pickle collecting pit 2 and Multi-level deflector sedimentation basin 4 is equipped with first
Elevator pump 3, the first pipe between Multi-level deflector sedimentation basin 4 and tune acid pond 6 are equipped with the second elevator pump 5；Adjust setting in sour pond 6
There are the first machine mixer 7 and acidity detector 8, sour pond 6 is adjusted to be connected with acid inlet tube 10, the other end connection of acid inlet tube 10
There is acid storage tank 9, sulfuric acid is stored in acid storage tank 9, tune acid pump 11 is provided on acid inlet tube 10, adjusts sour pond 6 and crystallization reactor
Feed pump 12 is provided in first pipe between 13, the acidity detector 8 is connected with the first controller, first control
Acid pump 11 and feed pump 12 are adjusted in device control connection；The crystallization reactor 13 is using existing common commercially available equipment（Configured with system
Cold, stirring and purging etc.）, the first pipe between crystallization reactor 13 and solid-liquid separating equipment 15 is equipped with the first delivery pump
14, solid, that is, green vitriol 16 that solid-liquid separating equipment 15 generates, between solid-liquid separating equipment 15 and regenerated acid pond 18
First pipe be equipped with the second delivery pump 17, solid-liquid separating equipment 15 generate liquid regeneration is delivered to by the second delivery pump 17
Sour pond 18, regenerated acid pond 18 are connected with pickle reuse pipeline 19, and the other end of pickle reuse pipeline 19 extends to pickling machine
Group 1, pickle reuse pipeline 19 are equipped with third delivery pump 20.
The pickling waste waters recovery unit includes by the sequentially connected pickling waste waters collecting pit 21 of second pipe, pretreatment
Pond 26, electric flocculation integration apparatus, more medium filter 34, intermediate buffering pond 36, tubular type ultrafiltration apparatus 38, reuse pool 39.
The pickle liquor that the pickling unit 1 generates is conveyed into pickling waste waters collecting pit 21, and aeration is arranged in pickling waste waters collecting pit 21
Blender 43 is provided with third elevator pump 22, pickling on the second pipe between pickling waste waters collecting pit 21 and pretreatment pool 26
Fluid level controller, the fluid level controller control connection third elevator pump 22 are provided in wastewater collection pond 21；Pretreatment pool 26
Inside be equipped with the second machine mixer 42 and pH detectors 27, pretreatment pool 26 is connected with alkali inlet tube road 24, alkali inlet tube road 24 it is another
One end is connected with alkali liquid tank 25, and sodium hydroxide solution is stored in alkali liquid tank 25, is provided on alkali inlet tube road 24 and adds alkali pump 23, institute
It states pH detectors 27 and is connected with second controller, the second controller control connection plus alkali pump 23；Pretreatment pool 26 is wadded a quilt with cotton with electricity
Second pipe between solidifying integration apparatus is equipped with the 4th elevator pump 28；Electric flocculation integration apparatus and more medium filter 34
Between second pipe on be provided with the 4th delivery pump 33, the second pipe between more medium filter 34 and intermediate buffering pond 36
It is equipped with the 5th delivery pump 35, the second pipe between intermediate buffering pond 36 and tubular type ultrafiltration apparatus 38 is equipped with the 5th elevator pump
37；The reuse pool 39 is connected with ejected wash water reuse pipeline 41, and the other end of ejected wash water reuse pipeline 41 extends to pickling machine
Group 1, ejected wash water reuse pipeline 41 are equipped with the 6th delivery pump 40.The pickling waste waters recovery unit further includes sludge concentration tank 30
And filter press 31, the sludge that the electric flocculation integration apparatus generates pass through sludge concentration tank 30 and filter press 31, form sludge
Cake 32.
The electric flocculation integration apparatus is using electric flocculation one described in the patent application No. is 201520213700.9
Disguise cell reaction area 29A, aerating regulation area 29B standby, including set gradually（Preceding pH adjusts area）, stirring coagulation area 29C（I.e.
Coagulating area）, precipitation dross area 29D（Settling zone, dross area, exhalant region）With pH control regions 29E（PH adjusts back area afterwards）, press
According to the setting in existing patent.Wherein, uniform intervals are equipped with several pole plates in cell reaction area 29A, and pole plate is the steel plate of rectangle,
For interpolar away from for 10 ~ 15 mm, the pole plate positioned at both ends is separately connected power supply.
The acid pickle and pickling waste waters resource utilization generated to steel surface pickling using above system is utilized, such as Fig. 2
It is shown, the acid pickle that pickling unit 1 generates is conveyed into acid pickle collecting pit 2 first, the pickling waste waters that pickling unit 1 generates is defeated
It is sent into pickling waste waters collecting pit 21.
The acid pickle of acid pickle collecting pit 2 follows the steps below processing：
1）By the first elevator pump 3, acid pickle is delivered to Multi-level deflector sedimentation basin 4 and carries out primary precipitation, removes spent acid
Grease type in liquid and particulate species impurity, and during primary precipitation, acid pickle is cooled to room temperature, and obtains primary acids
Liquid；
2）By the second elevator pump 5, level-one acid solution is delivered to the sour pond 6 of tune, acidity detector 8 monitors out acidity on-line,
And the start and stop for adjusting acid pump 11 are controlled by the first controller, realize that the mass fraction that sulfuric acid in level-one acid solution is adjusted by acid adding is
17~23%；
After the completion of adjusting acid concentration, the first controller controls feed pump 12 and starts, and adjusts the solution in sour pond 6 to enter crystallization anti-
It answers in device 13, when liquid level reaches setting height in crystallization reactor 13, feed pump 12 stops, and crystallization reactor 13 starts work
Make, in 0 ~ 3 DEG C of 45 ~ 90 min of freezing and crystallizing；
After freezing and crystallizing reaction, the solution in crystallization reactor 13 is delivered to solid-liquid separating equipment by the first delivery pump 14
15, solid and liquid are centrifuged out, respectively i.e. green vitriol 16 and two level acid solution；
3）By the second delivery pump 17, two level acid solution is delivered to regenerated acid pond 18, according to technological requirement to two level acid solution
It is allocated, you can as the pickle needed for the pickling of metal surface；Pass through pickle reuse pipeline 19 and third delivery pump again
20, it is delivered to pickling unit 1 and directly uses；
Pickling waste waters in pickling waste waters collecting pit 21 follows the steps below processing：
a）43 aeration agitation of Aeration stirrer in pickling waste waters collecting pit 21 works as acid with the water quality of uniform pickling waste waters
When washing pickling waste waters in wastewater collection pond 21 and reaching setting liquid level, fluid level controller controls third elevator pump 22 and starts, by pickling
Waste water is delivered in pretreatment pool 26；PH detectors 27 monitor out pH on-line, and add alkali pump 23 by second controller control
Start and stop realize that by adding alkali to adjust pH value be 5.0 ~ 6.5, obtain level-one return water；
b）Level-one return water is transported to electric flocculation integration apparatus by the 4th elevator pump 28, first in cell reaction area 29A
Cell reaction is carried out, cell reaction control is：50 ~ 100 V of voltage, 100 ~ 150 A/m of current density2, the residence time 10 ~ 25
min；Subsequently into aerating regulation area 29B, it is 8.5 ~ 9.5 that aeration aerating while, which adds alkali to adjust pH value,；Stirring is sequentially entered again
Coagulation area 29C and precipitation dross area 29D, the organic pollutions such as oil emulsion, oil slick are removed, and last supernatant enters pH regulation and control
Area 29E, by detection, if pH between 6 ~ 9, need not be adjusted, if pH not between 6 ~ 9, needs plus acid/base fine tuning,
Obtain two level return water；
c）Two level return water is delivered to through more medium filter 34 by the 4th delivery pump 33, by quartz sand filtration and work
Property charcoal filtering, further remove SS, COD etc., then intermediate buffering pond 36 is delivered to by the 5th delivery pump 35, pass through the 5th elevator pump
37 are filtered by injection tubular type ultrafiltration apparatus 38, obtain recycle-water, and the recycle-water is defeated by ejected wash water reuse pipeline 41 and the 6th
Pump 40 is sent to be transported to pickling unit 1, you can as the water for cleaning needed for the pickling of metal surface.
The sludge that the electric flocculation integration apparatus generates enters sludge concentration tank 30 by static pressure spoil disposal, then through filter press
31 dehydrations, the liquid for forming sludge cake 32, while being press-filtered out return to pickling waste waters collecting pit 21.
The present utility model is not limited to the above embodiments, and the above embodiments and description only describe this realities
With novel principle, the utility model also has various change and changes on the premise of not departing from the spirit and scope of the utility model
Into these various changes and improvements fall within the scope of the claimed invention.
Claims (5)
1. the system that a kind of acid pickle generated for metal surface pickling and pickling waste waters resource utilization utilize, feature exist
In：Including pickling unit, acid pickle recovery unit and pickling waste waters recovery unit, the acid pickle recovery unit includes by the
The sequentially connected acid pickle collecting pit of one pipeline, baffled sedimentation tank adjust sour pond, crystallization reactor, solid-liquid separating equipment, regeneration
Sour pond adjusts in sour pond and is provided with the first machine mixer and acidity detector；The pickling waste waters recovery unit includes by the
The sequentially connected pickling waste waters collecting pit of two pipelines, pretreatment pool, electric flocculation integration apparatus, more medium filter, centre are slow
Pond, tubular type ultrafiltration apparatus, reuse pool are rushed, Aeration stirrer is set in pickling waste waters collecting pit, second is equipped in pretreatment pool
Machine mixer and pH detectors.
2. being utilized according to claim 1 for the acid pickle and pickling waste waters resource utilization of metal surface pickling generation
System, it is characterised in that：The sour pond of the tune is connected with acid inlet tube, and the other end of acid inlet tube is connected with acid storage tank, acid inlet tube
It is provided with tune acid pump on road, adjusts and is provided with feed pump in the first pipe between sour pond and crystallization reactor, the acidity detection
Instrument is connected with the first controller, and acid pump and feed pump are adjusted in the first controller control connection.
3. being utilized according to claim 1 for the acid pickle and pickling waste waters resource utilization of metal surface pickling generation
System, it is characterised in that：The pretreatment tank is connected with alkali inlet tube road, and the other end in alkali inlet tube road is connected with alkali liquid tank, into alkali
It is provided on pipeline plus alkali pump, the pH detectors is connected with second controller, the second controller control connection plus alkali pump.
4. being utilized according to claim 1 for the acid pickle and pickling waste waters resource utilization of metal surface pickling generation
System, it is characterised in that：The pickling waste waters recovery unit further includes sludge concentration tank and filter press, for handling electric flocculation one
The sludge that body equipment generates.
5. being returned according to any acid pickle generated for metal surface pickling of Claims 1-4 and pickling waste waters recycling
Receive the system utilized, it is characterised in that：The electric flocculation integration apparatus includes the cell reaction area set gradually, aerating regulation
Area, stirring coagulation area, precipitation dross area and pH control regions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820152118.XU CN207943968U (en) | 2018-01-30 | 2018-01-30 | The system that a kind of acid pickle and pickling waste waters resource utilization for metal surface pickling generation utilizes |
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| CN201820152118.XU CN207943968U (en) | 2018-01-30 | 2018-01-30 | The system that a kind of acid pickle and pickling waste waters resource utilization for metal surface pickling generation utilizes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078261A (en) * | 2019-05-20 | 2019-08-02 | 中国恩菲工程技术有限公司 | Handle the method and system of waste water |
| CN110316866A (en) * | 2019-07-12 | 2019-10-11 | 北部湾大学 | The automated programming system and its technique of acid pickle are generated after a kind of pair of pickling of metal |
-
2018
- 2018-01-30 CN CN201820152118.XU patent/CN207943968U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078261A (en) * | 2019-05-20 | 2019-08-02 | 中国恩菲工程技术有限公司 | Handle the method and system of waste water |
| CN110078261B (en) * | 2019-05-20 | 2024-02-09 | 中国恩菲工程技术有限公司 | Method and system for treating wastewater |
| CN110316866A (en) * | 2019-07-12 | 2019-10-11 | 北部湾大学 | The automated programming system and its technique of acid pickle are generated after a kind of pair of pickling of metal |
| CN110316866B (en) * | 2019-07-12 | 2021-07-30 | 北部湾大学 | Automatic treatment system and process for waste acid liquid generated after metal pickling |
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