CN202415297U - Treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by potassium dichromate method - Google Patents
Treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by potassium dichromate method Download PDFInfo
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- CN202415297U CN202415297U CN2012200282339U CN201220028233U CN202415297U CN 202415297 U CN202415297 U CN 202415297U CN 2012200282339 U CN2012200282339 U CN 2012200282339U CN 201220028233 U CN201220028233 U CN 201220028233U CN 202415297 U CN202415297 U CN 202415297U
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- tank
- reaction
- waste liquid
- pipeline
- potassium dichromate
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Abstract
The utility model discloses treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by the potassium dichromate method, which belongs to the field of pollution treatment and comprises a chemical area and a reaction area. The chemical area is connected with the reaction area through a pipeline and comprises a waste liquor tank, a reduction salt storage tank and an alkali storage tank. The reaction area comprises a reaction tank. The waste liquor tank, the reduction salt storage tank and the alkaline storage tank are connected with the reaction tank through pipelines. The reaction area is provided with an air pump, and the air pump is connected with the reaction tank through a pipeline. The treatment equipment is capable of quickly and comprehensively treating waste liquor generated during online measuring COD max by the national standard method and converting solution less apt to storage and transport and high in heavy-metal ion toxicity into solids easy to storage and transport and low in toxicity, is simple in structure and easy to operate, and is fast in reaction since the whole reaction process can be completed within 5 minutes.
Description
Technical field
The utility model relates to a kind of equipment of handling poisonous and harmful heavy metallic ion waste liquid, is specifically related to the treatment facility that a kind of potassium dichromate process on-line determination COD produces waste liquid.
Background technology
It is consistent mensuration COD standard method of generally acknowledging both at home and abroad at present that potassium dichromate process is measured COD.The principle of measuring is: the mixed solution of water sample, SRM 935a, Sulfuric acid disilver salt and the vitriol oil is heated to 175 ℃ in digestion pool; Chromium ion is reduced the III valency and changes color from the VI valency as oxygenant; The content of organic cpds becomes corresponding relation, COD in the change degree of color and the sample
MaxAnalytical instrument converts through colorimetric and directly the COD in the sample is shown.For avoiding muriatic interference, in mixed solution, add Mercury bisulfate.Therefore, it is high to measure in the waste liquid of COD acidity, and the content of toxic heavy metal mercury, chromium, silver is high.If not treated, directly enter water drain, can cause serious secondary pollution.
Increasing along with the environment supervision; Source of pollution on-line monitoring equipment is all actively being installed by various places environmental administration; Current most of import and home-made " COD on line analyzer " all adopt the GB potassium dichromate process to measure COD; And these on line analyzers all do not design the treatment unit of waste liquid, do not have relevant treatment equipment on the market yet.These contain toxic heavy metal ionic discharging of waste liquid in water drain or field environment, though each amount is little, concentration is higher, accumulates over a long period, and still can cause serious secondary pollution, seems urgent day by day so study the harmless treatment equipment of this waste liquid.
The utility model content
The technical problem that solves
Measure in the waste liquid of COD acidity to potassium dichromate process high, and the content of toxic heavy metal mercury, chromium, silver is high.If it is not treated; Directly enter water drain; Can cause serious secondary pollution, the treatment facility that the utility model provides a kind of potassium dichromate process on-line determination COD to produce waste liquid is through this treatment facility; The technical problem that is solved is to handle comprehensively, efficiently poisonous and harmful heavy metallic ion in the waste liquid that online COD analysis-e/or determining COD produced, and prevents that its waste liquid from causing for the second time environment to pollute.
Technical scheme
A kind of potassium dichromate process on-line determination COD produces the treatment facility of waste liquid, comprises medicine district, reaction zone, and the medicine district is connected with reaction zone through pipeline.
Said medicine district comprises waste liquid tank, reductibility salt hold-up vessel, alkali hold-up vessel, and said reaction zone comprises reaction tank, and waste liquid tank, reductibility salt hold-up vessel, alkali hold-up vessel are through the pipe connection reaction tank.
Said reaction zone is provided with pneumatic pump, and pneumatic pump is connected with reaction tank through pipeline.
Said reaction zone is provided with settling tank, and settling tank is connected with reaction tank through pipeline.
Said medicine district is provided with the diluted acid hold-up vessel; Reaction zone is provided with supernatant neutralization tank and pH meter; Wherein settling tank is connected with the supernatant neutralization tank through pipeline with the diluted acid hold-up vessel, and pH meter is installed in the supernatant neutralization tank, and pneumatic pump links to each other with the supernatant neutralization tank through pipeline.
Pipeline is provided with valve.
Said reaction zone is provided with pallet, and pallet is positioned at device bottom, and reaction tank links to each other with pallet through upflow tube.
Said valve is connected with PLC or microcomputer controller through wire.
During operation, at first, medicine district waste liquid, reductibility salt (Na
2S, Na
2SO
3, Na
2S
2O
35H
2O, FeSO
47H
2O, Fe
2(SO
3)
3, FeSO
4, FeCl
2In one or more) get into reaction zone through pipeline, carry out redox reaction at reaction zone, VI valency chromium ion (Cr in the waste liquid
6+) be reduced into III valency chromium ion (Cr
3+); Then, medicine district alkali gets into reaction zone through pipeline, and precipitin reaction takes place in the reaction zone, and all heavy metal ion become the precipitable solid of chemical combination attitude, wait deposition fully after, discharge the supernatant of reaction zone, collect the settling of reaction zone.
Beneficial effect
1) the utility model can be handled fast, all sidedly and adopt national standard method on-line determination COD
MaxThe waste liquid that is produced;
2) having realized being not easy storing and transport, contain the higher solution of heavy metal ion toxicity changes into and is prone to storage and transportation, solid that toxicity is lower;
3) speed of response is fast, and entire reaction course can be accomplished in 5min;
4) simple in structure, easy handling.
Description of drawings
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3;
Fig. 4 is the structural representation of embodiment 4;
Fig. 5 is the structural representation of embodiment 5;
Fig. 6 is the structural representation of embodiment 6;
Fig. 7 is the structural representation of embodiment 7;
Fig. 8 is embodiment 7 internal structure skeleton views.
Wherein: the implication of label representative is among the figure: 1-9 valve, 10 waste liquid tanks, 11 reductibility salt hold-up vessels, 12 alkali hold-up vessels, 13 diluted acid hold-up vessels; 14 reaction tanks, 15 settling tanks, 16 neutralization tanks, 17 pneumatic pumps; 18 upflow tubes, 19 pallets, 20pH meter, 21 microcomputer controllers.
Embodiment
Like Fig. 1; Potassium dichromate process on-line determination COD produces the treatment facility of waste liquid; Comprise medicine district, reaction zone, the medicine district is connected with reaction zone through pipeline, and the medicine district comprises the reaction tank 14 of waste liquid tank 10, reductibility salt hold-up vessel 11, alkali hold-up vessel 12 and reaction zone.The medicine district is connected with reaction zone through pipeline, and the medicine in medicine district can get in the reaction tank through supporting with it pipeline, on the reaction tank outlet conduit is installed in addition.
Operation steps:
VI valency chromium ion (Cr in step 1. waste liquid
6+) be reduced into III valency chromium ion (Cr
3+): waste liquid gets into the reaction tank 14 of reaction zone earlier in the waste liquid tank 10 in medicine district through pipeline; Then reductibility salt gets into reaction tank 14 through pipeline in the reductibility salt hold-up vessel 11; Perhaps reductibility salt is introduced into reaction tank 14 through pipeline in the reductibility salt hold-up vessel 11; Then waste liquid gets in the waste liquid tank 10, lets it fully react, VI valency chromium ion (Cr in the waste liquid
6+) be reduced into III valency chromium ion (Cr
3+);
Like Fig. 2, the treatment process of system is constant, and substruction is on embodiment 1 basis, to add a pneumatic pump 17, and pneumatic pump links to each other with reaction tank 14 through pipeline, is specially:
VI valency chromium ion (Cr in step 1. waste liquid
6+) be reduced into III valency chromium ion (Cr
3+): waste liquid gets into the reaction tank 14 of reaction zone earlier in the waste liquid tank 10 in medicine district through pipeline; Start pneumatic pump 17, then reductibility salt gets into reaction tank 14 through pipeline in the reductibility salt hold-up vessel 11, and perhaps reductibility salt is introduced into reaction tank 14 through pipeline in the reductibility salt hold-up vessel 11; Start pneumatic pump 17; Then waste liquid gets in the waste liquid tank 10, lets it fully react, VI valency chromium ion (Cr in the waste liquid
6+) be reduced into III valency chromium ion (Cr
3+);
Like Fig. 3, system handles technology is constant, and substruction is on embodiment 2, to add a settling tank 15 and the outlet conduit that matches with it, and former outlet conduit links to each other with settling tank 14.After the mixing solutions complete reaction finishes in the reaction tank 14, get into settling tank 15 standing demix through pipeline, the supernatant discharging, settling has been given the qualification processed in units.
Embodiment 4
Like Fig. 4, device structure adds diluted acid hold-up vessel 13, supernatant neutralization tank 16, pH meter 20 and relevant supporting pipeline on the basis of embodiment 3.Settling tank 15, the supporting with it outlet conduit of diluted acid hold-up vessel 13 are connected with supernatant neutralization tank 16, and pH meter 20 probes are installed in supernatant neutralization tank 16 the insides, have added a pipeline in addition on the pneumatic pump 17 and have linked to each other with neutralization tank 16.
Device processes technology has been added supernatant pH value and has been regulated technology on the basis of embodiment 3.The supernatant that settling tank 15 is set a raft going out gets into neutralization tank 16; Start pneumatic pump, the diluted acid in the diluted acid jar 13 gets into supernatant through pipeline and gets into neutralization tank 16 adjusting supernatant pH values, when pH meter 20 reaches 6-9; Promptly stop pneumatic pump 17 and regulate, the supernatant discharging with diluted acid.
Like Fig. 5, on the basis of embodiment 4, on each pipeline, add valve 1-9, other structure is constant.
Shown in Figure 6, on the basis of embodiment 5, on reaction tank 14, add a upflow tube 18 and add a pallet 19 in the device bottom, other is constant.When with pipeline that the medicine hold-up vessel is connected on valve 1-3 malfunctioning, medicine will flow into to overflow behind the reaction tank 14 and arrive pallet 19, changes SV this moment, cleaning pallet 19.
Embodiment 7
Like Fig. 7 and Fig. 8, on the basis of embodiment 6, increase PLC or microcomputer controller 21, valve 1-9 is connected on PLC or the microcomputer controller through wire, can realize automated operation.
Claims (8)
1. the treatment facility of a potassium dichromate process on-line determination COD generation waste liquid comprises medicine district, reaction zone, and the medicine district is connected with reaction zone through pipeline.
2. potassium dichromate process on-line determination COD according to claim 1 produces the treatment facility of waste liquid; It is characterized in that: said medicine district comprises waste liquid tank, reductibility salt hold-up vessel, alkali hold-up vessel; Said reaction zone comprises reaction tank, and waste liquid tank, reductibility salt hold-up vessel, alkali hold-up vessel are through the pipe connection reaction tank.
3. potassium dichromate process on-line determination COD according to claim 1 produces the treatment facility of waste liquid, and it is characterized in that: said reaction zone is provided with pneumatic pump, and pneumatic pump is connected with reaction tank through pipeline.
4. potassium dichromate process on-line determination COD according to claim 3 produces the treatment facility of waste liquid, and it is characterized in that: said reaction zone is provided with settling tank, and settling tank is connected with reaction tank through pipeline.
5. potassium dichromate process on-line determination COD according to claim 4 produces the treatment facility of waste liquid; It is characterized in that: said medicine district is provided with the diluted acid hold-up vessel; Reaction zone is provided with supernatant neutralization tank and pH meter; Wherein settling tank is connected with the supernatant neutralization tank through pipeline with the diluted acid hold-up vessel, and pH meter is installed in the supernatant neutralization tank, and pneumatic pump links to each other with the supernatant neutralization tank through pipeline.
6. produce the treatment facility of waste liquid according to any described potassium dichromate process on-line determination COD of claim 1-5, it is characterized in that: said pipeline is provided with valve.
7. potassium dichromate process on-line determination COD according to claim 6 produces the treatment facility of waste liquid, and it is characterized in that: said reaction zone is provided with pallet, and pallet is positioned at device bottom, and reaction tank links to each other with pallet through upflow tube.
8. potassium dichromate process on-line determination COD according to claim 7 produces the treatment facility of waste liquid, it is characterized in that: said valve is connected with PLC or microcomputer controller through wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200282339U CN202415297U (en) | 2012-01-28 | 2012-01-28 | Treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by potassium dichromate method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200282339U CN202415297U (en) | 2012-01-28 | 2012-01-28 | Treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by potassium dichromate method |
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| Publication Number | Publication Date |
|---|---|
| CN202415297U true CN202415297U (en) | 2012-09-05 |
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ID=46740079
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200282339U Expired - Lifetime CN202415297U (en) | 2012-01-28 | 2012-01-28 | Treatment equipment for waste liquor generated during online measuring COD (chemical oxygen demand) by potassium dichromate method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288231A (en) * | 2013-04-16 | 2013-09-11 | 山东益源环保科技有限公司 | Industrial treatment process for CODCr waste liquid |
| CN103739118A (en) * | 2014-01-06 | 2014-04-23 | 博天环境集团股份有限公司 | Treatment method for analyzing waste liquid |
| CN105588927A (en) * | 2014-11-14 | 2016-05-18 | 株式会社岛津制作所 | Treatment method for waste liquid in COD measurement apparatus |
| CN108956853A (en) * | 2018-07-16 | 2018-12-07 | 郑州市通标环境检测有限公司 | A kind of method that dichromate titration measures COD in water |
| CN104817155B (en) * | 2014-01-30 | 2019-01-18 | 株式会社岛津制作所 | The instant processing method for the waste liquid that dichromate titration on-line checking COD generates |
-
2012
- 2012-01-28 CN CN2012200282339U patent/CN202415297U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103288231A (en) * | 2013-04-16 | 2013-09-11 | 山东益源环保科技有限公司 | Industrial treatment process for CODCr waste liquid |
| CN103288231B (en) * | 2013-04-16 | 2014-04-02 | 山东益源环保科技有限公司 | Industrial treatment process for CODCr waste liquid |
| CN103739118A (en) * | 2014-01-06 | 2014-04-23 | 博天环境集团股份有限公司 | Treatment method for analyzing waste liquid |
| CN103739118B (en) * | 2014-01-06 | 2016-01-20 | 博天环境集团股份有限公司 | The treatment process of analysis |
| CN104817155B (en) * | 2014-01-30 | 2019-01-18 | 株式会社岛津制作所 | The instant processing method for the waste liquid that dichromate titration on-line checking COD generates |
| CN105588927A (en) * | 2014-11-14 | 2016-05-18 | 株式会社岛津制作所 | Treatment method for waste liquid in COD measurement apparatus |
| CN105588927B (en) * | 2014-11-14 | 2020-02-07 | 株式会社岛津制作所 | Waste liquid treatment method in chemical oxygen demand measuring device |
| CN108956853A (en) * | 2018-07-16 | 2018-12-07 | 郑州市通标环境检测有限公司 | A kind of method that dichromate titration measures COD in water |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |