CN204779193U - Pretreatment device for determining chemical oxygen demand of coking wastewater - Google Patents
Pretreatment device for determining chemical oxygen demand of coking wastewater Download PDFInfo
- Publication number
- CN204779193U CN204779193U CN201520443539.4U CN201520443539U CN204779193U CN 204779193 U CN204779193 U CN 204779193U CN 201520443539 U CN201520443539 U CN 201520443539U CN 204779193 U CN204779193 U CN 204779193U
- Authority
- CN
- China
- Prior art keywords
- transparent
- reactor
- transparent reactor
- liquid level
- magnetic rotor
- Prior art date
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- Expired - Fee Related
Links
- 238000004939 coking Methods 0.000 title claims abstract description 12
- 239000000126 substance Substances 0.000 title claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000001301 oxygen Substances 0.000 title claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 9
- 239000002351 wastewater Substances 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005286 illumination Methods 0.000 claims abstract description 11
- 238000003760 magnetic stirring Methods 0.000 claims description 12
- 239000002894 chemical waste Substances 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007800 oxidant agent Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 235000012571 Ficus glomerata Nutrition 0.000 description 1
- 240000000365 Ficus racemosa Species 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 235000015125 Sterculia urens Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model provides a pretreatment device for measuring the chemical oxygen demand of coking wastewater, which comprises a transparent constant-temperature water bath, a liquid level display tube, a transparent reactor, a pH measuring instrument, a magnetic rotor, an illumination system and a magnetic stirrer; the device is characterized in that a pH tester and a material inlet are arranged on a transparent reactor arranged in a transparent constant-temperature water bath tank, a liquid level display tube is arranged on the side wall of the transparent reactor, a magnetic rotor is arranged at the bottom in the transparent reactor, a magnetic stirrer is arranged at the position, corresponding to the magnetic rotor, outside the transparent reactor, and two sides of the magnetic stirrer are respectively provided with an illumination system. The utility model discloses can effectively shield remaining hydrogen peroxide solution in water to CODcrThe influence of the detection result not only can consume the oxidant in the water, but also can accelerate the effective decomposition of the reducing agent, does not change the quantity and the property of the original organic substances, is favorable for objectively and accurately detecting the COD value in the water, and truly reflects the treatment effect of the sewage treatment plant.
Description
Technical field
The utility model belongs to water-treatment technology field, is specifically related to a kind of pretreatment unit for carrying out after iron and steel enterprise's Treatment of Coking Effluent before chemical oxygen demand (COD) (COD) detection.
Background technology
Coal chemical enterprise can produce a large amount of coking chemical waste waters, its water quality poisonous and harmful, and water yield fluctuation is very large, and COD index wherein enjoys the concern of people.COD refers under certain condition, and by the amount of strong oxidizer process water sample time institute oxygen consumed agent, result is converted to the content (in mg/l) of oxygen.It characterizes the composite target that in water body, reducing substances pollutes, and usually adopts potassium dichromate process to carry out COD
crmeasurement.
Adopt chemical oxidation process Treatment of Wastewater in Coking to develop in recent years very fast, the selection of oxygenant is also varied.Hydrogen peroxide (H
2o
2) be a kind of oxidizing species, be used widely with the field such as advanced treatment and high concentration hard-degraded organic waste water process of the form of Fenton (Fenton) oxidation system at waste water.Although H
2o
2have powerful oxidation capacity, but in the reaction as run into stronger oxidizing substance potassium permanganate, it is oxidized that it then can serve as reducing substance.So in National Standard Method, the potassium bichromate as oxygenant can be reacted with the hydrogen peroxide of remnants, has a strong impact on its measurement result.
The chemical plant of certain iron and steel enterprise adopts Fenton oxidation technique advanced treatment on coking wastewater, but the COD result adopting existing measurement standard to detect always does not reach design requirements.Provincial standard specifies that the highest permission emission concentration of COD in waste water is 50mg/L, therefore detects the true COD numerical value of waste discharge, for production run and the protection ecotope around of enterprise, all has important practical significance.
Summary of the invention
The utility model aims to provide one can get rid of hydrogen peroxide interference, pretreatment unit before the coking chemical waste water COD determination of actual response wastewater treatment efficiency.
For this reason, the technical solution that the utility model is taked is:
Measure a pretreatment unit for coking chemical waste water chemical oxygen demand (COD), it is characterized in that, comprise transparent constant temperature water bath, liquid level charactron, transparent reactor, pH determinator, magnetic rotor, illumination system and magnetic stirring apparatus; Transparent reactor is placed in transparent constant temperature water bath, have above transparent reactor and measure hole and material inlet, sidewall is equipped with liquid level charactron, measure in hole and be inserted with pH determinator, magnetic rotor is provided with in transparent reactor inner bottom part mid-way, be provided with magnetic stirring apparatus outside transparent reactor and on magnetic rotor correspondence position, magnetic stirring apparatus both sides are respectively equipped with illumination system.
Treatment process of the present utility model and beneficial effect are:
Coking chemical waste water after Fenton oxidation process is injected in transparent reactor, by liquid level charactron record liquid level present position by material inlet.
Under the state stirred, add sodium hydroxide solution by material inlet, make solution remain between 9.0-10.0, then add sodium sulfite solution by material inlet, its amount is identical with the hydrogen peroxide amount before Fenton's reaction, and the reaction times controls at 2-4 hour.Reaction terminates the transparent constant temperature water bath of rear unlatching, makes solution temperature remain on 45-55 DEG C, opens illumination system simultaneously, react 4-6 hour more with this understanding.After reaction terminates, add the vitriol oil by material inlet, make pH value of solution be between 2-3, continue reaction 1-2 hour.After reaction terminates, close magnetic stirring apparatus, transparent constant temperature water bath and illumination system, inject deionized water by material inlet, make liquid level return to original record position.
Now transparent reactor inside had not both had the oxygenants such as remaining hydrogen peroxide, and also do not have the reductive agents such as unnecessary sodium bisulfite, the original organism class material in waste water does not change, and the existence of the vitriol oil is for COD
crdetection have no effect, therefore can sample and carry out COD
crmensuration.
The utility model can effectively in shield water remaining hydrogen peroxide to COD
crthe impact of detected result, the oxygenant in water can not only be consumed, and can effective decomposition of Accelerating reduction agent, do not change quantity and the character of original organic species, structure is simple, easy handling, contribute to COD value in objective and accurate detection water outlet, actual response goes out the treatment effect of sewage work.
Accompanying drawing explanation
Fig. 1 is pretreatment unit front view;
Fig. 2 is pretreatment unit vertical view.
In figure: transparent constant temperature water bath 1, liquid level charactron 2, transparent reactor 3, pH determinator 4, magnetic rotor 5, material inlet 6, illumination system 7, magnetic stirring apparatus 8.
Embodiment
From accompanying drawing, the utility model measures the pretreatment unit of coking chemical waste water chemical oxygen demand (COD), comprises transparent constant temperature water bath 1, liquid level charactron 2, transparent reactor 3, pH determinator 4, magnetic rotor 5, illumination system 7 and magnetic stirring apparatus 8.Transparent constant temperature water bath 1 and transparent reactor 3 all adopt transparent material to be made.
Transparent reactor 3 is placed in gular transparent constant temperature water bath 1 uncovered above.Transparent reactor 3 has above and measures hole, and pH determinator 4 is inserted in transparent reactor 3, to detect the pH value of solution accurately by measuring hole.Transparent reactor 3 is reserved with material inlet 6, for adding material and magnetic rotor 5 in side above.Transparent reactor 3 left side wall is equipped with a liquid level charactron 2, and liquid level charactron 2 not only can record the front liquid level of reaction, and can play mark effect to reacted liquor capacity constant volume, consistent to ensure the liquor capacity reacting front and back.Magnetic rotor 5 is provided with in the mid-way of transparent reactor 3 inner bottom part, on the position that transparent reactor 3 bottom outer is corresponding with magnetic rotor 5, magnetic stirring apparatus 8 is installed simultaneously, magnetic stirring apparatus 8 can drive magnetic rotor 5 to rotate, and rotating speed can regulate, the mixing of materials of transparent reactor 3 inside can be made complete.A set of illumination system 7 is also respectively equipped with, for promoting the speed of response of transparent reactor 3 materials inside in the both sides of magnetic stirring apparatus 8.
Claims (1)
1. measure a pretreatment unit for coking chemical waste water chemical oxygen demand (COD), it is characterized in that, comprise transparent constant temperature water bath, liquid level charactron, transparent reactor, pH determinator, magnetic rotor, illumination system and magnetic stirring apparatus; Transparent reactor is placed in transparent constant temperature water bath, have above transparent reactor and measure hole and material inlet, sidewall is equipped with liquid level charactron, measure in hole and be inserted with pH determinator, magnetic rotor is provided with in transparent reactor inner bottom part mid-way, be provided with magnetic stirring apparatus outside transparent reactor and on magnetic rotor correspondence position, magnetic stirring apparatus both sides are respectively equipped with illumination system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443539.4U CN204779193U (en) | 2015-06-26 | 2015-06-26 | Pretreatment device for determining chemical oxygen demand of coking wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520443539.4U CN204779193U (en) | 2015-06-26 | 2015-06-26 | Pretreatment device for determining chemical oxygen demand of coking wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204779193U true CN204779193U (en) | 2015-11-18 |
Family
ID=54519285
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520443539.4U Expired - Fee Related CN204779193U (en) | 2015-06-26 | 2015-06-26 | Pretreatment device for determining chemical oxygen demand of coking wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204779193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908504A (en) * | 2017-02-15 | 2017-06-30 | 河海大学 | A kind of chloroalkene determines device and its detection method |
-
2015
- 2015-06-26 CN CN201520443539.4U patent/CN204779193U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908504A (en) * | 2017-02-15 | 2017-06-30 | 河海大学 | A kind of chloroalkene determines device and its detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20210626 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |