CN103613161B - A kind for the treatment of apparatus of the waste water containing arsenic and chromium - Google Patents
A kind for the treatment of apparatus of the waste water containing arsenic and chromium Download PDFInfo
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- CN103613161B CN103613161B CN201310613475.3A CN201310613475A CN103613161B CN 103613161 B CN103613161 B CN 103613161B CN 201310613475 A CN201310613475 A CN 201310613475A CN 103613161 B CN103613161 B CN 103613161B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 95
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 35
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 35
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000011651 chromium Substances 0.000 title claims abstract description 16
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 16
- 239000003463 adsorbent Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003480 eluent Substances 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims abstract description 7
- 239000002105 nanoparticle Substances 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 17
- 239000002245 particle Substances 0.000 abstract description 12
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 230000001172 regenerating effect Effects 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 39
- 239000002699 waste material Substances 0.000 description 33
- 238000002955 isolation Methods 0.000 description 18
- 230000004087 circulation Effects 0.000 description 17
- 239000000725 suspension Substances 0.000 description 10
- 238000005070 sampling Methods 0.000 description 9
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 238000013461 design Methods 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- FGIWMSAVEQNPPQ-UHFFFAOYSA-N arsenic;hydrate Chemical compound O.[As] FGIWMSAVEQNPPQ-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind for the treatment of apparatus of the waste water containing arsenic and chromium. Described treating apparatus comprises integrated reaction and separation device, magnetic adsorbent bucket, wastewater barrel and eluent bottle; Integrated reaction and separation device comprises reactor and is arranged on the magnechuck of reactor bottom; The import of reactor is connected with described magnetic adsorbent bucket, wastewater barrel and eluent bottle respectively; The outlet of reactor is connected with water tank and fluid reservoir respectively. Use the present invention while processing waste water, absorption, separation, the wash-out that can the realize industrial nanoscale adsorbent a complete set of integrated process of regenerating, has solved adsorbent small size and problem that easily recyclability is difficult to take into account effectively. While using the present invention to process waste water, using magnetic Nano iron oxide particle as the adsorbent containing arsenic or chromate waste water, the application of the adsorbent of having realized nano-scale particle in actual industrial wastewater treatment, utilize the nano level size advantage of adsorbent, ensure very large adsorption capacity, realized adsorbent consumption and the low ratio of processing waste water.
Description
Technical field
The treating apparatus that the present invention relates to a kind of waste water containing arsenic and chromium, belongs to Environmental Water process field.
Background technology
Arsenic in water and chromium all belong to element contact scar, to human body have very strong bio-toxicity and three cause (teratogenesis,Carcinogenic and mutagenesis) serious harm. Arsenic content in water body is had to strict regulation, Arsenic in Drinking Water both at home and abroadMaximum concentration can not be higher than 0.01mg/L, industrial discharge arsenic in waste water concentration can not exceed 0.5mg/L. Absorption method isRemoval method is polluted in application very widely a kind of water arsenic. But, there is at present the adsorbent of actual application value,General particle size is all very little, many is all micron order, or even Nano grade, little size make adsorbent withThe abundant combination of pollutant, has ensured adsorbance, but has also increased the separating difficulty of adsorbent and water, hinders follow-upReclaim, easily cause the rear water turbidity of secondary pollution and processing too high, adsorbance is not high, serious restriction that these are not enoughThe industrial applications of absorption method.
Summary of the invention
The treating apparatus that the object of this invention is to provide a kind of waste water containing arsenic and chromium, treating apparatus of the present invention is processed uselessWhen water, arsenic in waste water pollutant or chromium pollutant concentration can be reduced to below discharging standards, and can be by arsenic dirtDye thing or chromium pollutant and get off from adsorbent surface desorption, and adsorbent all can be reclaimed from water.
The treating apparatus of a kind of waste water containing arsenic and chromium provided by the present invention, comprises integrated reaction and separation device, magneticProperty adsorbent bucket, wastewater barrel and eluent bottle;
Described integrated reaction and separation device comprises reactor and is arranged on the magnechuck of described reactor bottom;
The import of described reactor is connected with described magnetic adsorbent bucket, described wastewater barrel and described eluent bottle respectivelyLogical;
The outlet of described reactor is connected with water tank and fluid reservoir respectively.
In above-mentioned treating apparatus, described water tank is removed purifying waste water after arsenic and chromium for holding, and described fluid reservoir is usedLiquid after holding eluent wash-out magnetic adsorbent.
In above-mentioned treating apparatus, between described reactor and described water tank and described fluid reservoir, be also provided with a degree of depth and divideFrom device, described degree of depth separator comprises sedimentation container and the permanent magnetic chuck of being located at described sedimentation container bottom, described inDegree of depth separator can separate water with the adsorbent that has adsorbed pollutant is further.
In above-mentioned treating apparatus, the import of described reactor also regulates acid solution bottle and pH to regulate alkali lye bottle with pH respectivelyBe connected;
In described reactor, be provided with a pH meter, to monitor pH value.
In above-mentioned treating apparatus, the import of described reactor is by a pipeline and described magnetic adsorbent bucket, described uselessBucket and described eluent bottle are connected;
Described pipeline is provided with a measuring pump I, arrange like this measuring pump I just can realize to magnetic adsorbent,The metering of waste water and eluent.
In above-mentioned treating apparatus, the port of export of described reactor connects a measuring pump II, in to water after treatmentAmount.
In above-mentioned treating apparatus, in described reactor and described magnetic adsorbent bucket, be equipped with agitator.
Course of work when treating apparatus provided by the invention is removed arsenic in water and/or chromium is as follows:
Can adopt magnetic iron oxide nano particle as the adsorbent containing arsenic or chromate waste water. As shown in Figure 1, first,Start agitator 7, open valve 8, by the magnetic iron oxide suspension of magnetic adsorbent bucket 6 middle and high concentrations through measuring pumpI 5 is driven in reactor 1 quantitatively, and valve-off 8 is opened valve 10, will in wastewater barrel 9, contain arsenic or contain chromiumWaste water is driven in reactor 1 quantitatively through measuring pump I 5, and valve-off 10 is opened agitator 2, according to pH meterThe pH value of solution in 4 reactors 1 that detect, controlled valve 12 drips pH adjusting with valve 14 in reactor 1Acid solution bottle 11 and pH regulate the pH regulator solution in alkali lye bottle 13, make the waste water of reactor 1 have suitable soda acidDegree, under stirring condition, after adsorption reaction special time, closes agitator 2, opens magnechuck 3 and carries out magneticAdsorbent separates with water, after special time, opens valve 20 and measuring pump II 17 by whole water in reactor 1Get, valve-off 20, magnechuck 3 and measuring pump II 17, open valve 16, measuring pump I 5 and stirringDevice 2 is squeezed into quantitative eluent in reactor 1, and valve-off 16 and measuring pump I 5, after special time, closeClose agitator 2, open magnechuck 3, after special time, open valve 22 and measuring pump II 17 by reactor 1Eluent all squeeze in fluid reservoir 23, close magnechuck 3, valve 22 and 17, one circulations of measuring pump IIFinish, after the regeneration of adsorbent wash-out, start the new a collection of wastewater treatment cycle.
Tool of the present invention has the following advantages:
The present invention has introduced magnetic field retracting device, solved industrial granule adsorbent handle after pollution, be difficult toThe drawback of aqueous phase separation, and with respect to other traditional separate mode, magnetism separate method have take up room little, pointShort from the time, a series of incomparable advantages such as separation rate is high, and energy consumption is low, simple to operate; And add absorptionAgent regeneration technology step, has increased the number of times that recycles of adsorbent, and the very big treating capacity that has reduced solid waste, avoidsSecondary pollution. Use the present invention while processing waste water, can realize industrial nanoscale adsorbent absorption, separate, washThe a complete set of integrated process of de-regeneration, has solved the problem that adsorbent small size and easy recyclability are difficult to take into account effectively. MakeWhile processing waste water with the present invention, using magnetic Nano iron oxide particle as the adsorbent containing arsenic or chromate waste water, realizeThe application in actual industrial wastewater treatment of the adsorbent of nano-scale particle, utilize the nano level size advantage of adsorbent,Ensure very large adsorption capacity, realized adsorbent consumption and the low ratio of processing waste water.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention contains the treating apparatus of the waste water of arsenic and chromium,
In figure, each mark is as follows: 1 reactor, 2,7 agitators, 3 magnechucks, 4pH meter, 5 measuring pump I,6 magnetic adsorbent buckets, 8,10,12,14,16,20,22 valves, 9 wastewater barrels, 11pH regulate acid solution bottle,13pH regulates alkali lye bottle, 15 eluent bottles, 17 measuring pump II, 18 sedimentation containers, 19 permanent magnetic chucks, 21 storagesBucket, 23 liquid storing barrels.
Fig. 2 is the design sketch of wastewater treatment in embodiment 2,3 and 4.
Fig. 3 is the design sketch of wastewater treatment in embodiment 5,6 and 7.
Fig. 4 is the design sketch of wastewater treatment in embodiment 8,9 and 10.
Detailed description of the invention
The experimental technique using in following embodiment if no special instructions, is conventional method.
Material, reagent etc. used in following embodiment, if no special instructions, all can obtain from commercial channels.
Embodiment 1, containing the treating apparatus of the waste water of arsenic and chromium
As shown in Figure 1, the treating apparatus of the waste water containing arsenic and chromium provided by the invention comprise integrated reaction and separation device,In degree of depth separator, magnetic adsorbent bucket 6(, be provided with agitator 7), wastewater barrel 9, pH regulate acid solution bottle 11, pHRegulate alkali lye bottle 13 and eluent bottle 15.
Integrated reaction and separation device in the present invention comprises reactor 1 and is arranged on the magnechuck of reactor 1 bottom3, for adsorbing magnetic adsorbent. In reactor 1, be provided with a pH meter 4 and agitator 2. The import of this reactor 1Regulate acid solution bottle 11, pH to regulate alkali lye bottle 13 and eluent bottle with magnetic adsorbent bucket 6, wastewater barrel 9, pH respectively15 are connected, and regulate acid solution bottle 11, pH to regulate alkali lye bottle 13 and at magnetic adsorbent bucket 6, wastewater barrel 9, pHThe port of export of eluent bottle 15 is respectively arranged with valve 8, valve 10, valve 12, valve 14 and valve 16, insteadAnswer the arrival end of device 1 to be provided with measuring pump I 5.
Degree of depth separator in the present invention comprises sedimentation container 18 and is located at the permanent magnetic chuck of sedimentation container 18 bottoms19, water can be separated with the adsorbent that has adsorbed pollutant is further. The outlet sedimentation container 18 of reactor 1 is connected,And on the pipeline of this connection, be provided with measuring pump II. The outlet of sedimentation container 18 respectively with water tank 21 and fluid reservoir 23Be connected, and be respectively equipped with valve 20 and valve 22 at the entrance point of water tank 21 and fluid reservoir 23, heavy to realizeFalling container 18 is communicated with water tank 21 and the independent of fluid reservoir 23.
The treating apparatus processing of embodiment 2, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor 1, squeezing into again 15L initial concentration is the pentavalent arsenic waste water of 100mg/L, and pH value is adjusted to 3.0,Absorption 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; To reactor 1In to add 250mL concentration be the NaOH eluent of 1mol/L, wash-out 15min, after Magnetic Isolation 10min, willEluent is got, and again in reactor 1, squeezes into the pentavalent arsenic waste water that 15L initial concentration is 100mg/L, starts newWastewater treatment circulation, amount to and carry out 10 circulations, always process 150L waste water, result as shown in Figure 2,6After individual wastewater treatment circulation, when processing wastewater flow rate and reaching 90L, the waste strength of discharge is all in the country of 0.5mg/LIndustrial wastewater discharge is below the mark, and since the 7th batch of waste water, the waste strength of discharge exceedes the discharge mark of 0.5mg/LAccurate.
The treating apparatus processing of embodiment 3, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor 1, squeezing into again 15L initial concentration is the trivalent arsenic waste water of 100mg/L, and pH value is adjusted to 7.0,Absorption 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; To reactor 1In to add 250mL concentration be the NaOH eluent of 1mol/L, wash-out 15min, after Magnetic Isolation 10min, willEluent is got, and again in reactor, squeezes into the trivalent arsenic waste water that 15L initial concentration is 100mg/L, starts newWastewater treatment circulation, amounts to and carries out 10 circulations, always processes 150L waste water, result as shown in Figure 2, at 4After wastewater treatment circulation, when processing wastewater flow rate and reaching 60L, the waste strength of discharge is all in the national work of 0.5mg/LBelow industry wastewater discharge standard, since the 5th batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 4, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeeze into again the hexavalent chromium wastewater that 15L initial concentration is 100mg/L, pH value is adjusted to 3.0, inhaleAttached 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the hexavalent chromium wastewater that 15L initial concentration is 100mg/L, starts new waste waterCycle for the treatment of, amount to carry out 10 times circulation, always process 150L waste water, result as shown in Figure 2, at 2 waste waterAfter cycle for the treatment of, when processing wastewater flow rate and reaching 30L, the waste strength of discharge is all at the national Industry Waste of 0.5mg/LBelow water discharge standard, since the 3rd batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 5, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeezing into again 15L initial concentration is the pentavalent arsenic waste water of 50mg/L, and pH value is adjusted to 3.0, inhalesAttached 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the pentavalent arsenic waste water that 15L initial concentration is 50mg/L, starts new waste waterCycle for the treatment of, amounts to and carries out 16 circulations, always processes 240L waste water, and result as shown in Figure 3, useless at 11After water treatment circulation, when processing wastewater flow rate and reaching 165L, the waste strength of discharge is all in country's industry of 0.5mg/LBelow wastewater discharge standard, since the 12nd batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 6, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeezing into again 15L initial concentration is the trivalent arsenic waste water of 100mg/L, and pH value is adjusted to 7.0, inhalesAttached 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the trivalent arsenic waste water that 15L initial concentration is 50mg/L, starts new waste waterCycle for the treatment of, amount to carry out 16 times circulation, always process 240L waste water, result as shown in Figure 3, at 8 waste waterAfter cycle for the treatment of, when processing wastewater flow rate and reaching 120L, the waste strength of discharge is all at the national Industry Waste of 0.5mg/LBelow water discharge standard, since the 9th batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 7, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeeze into again the hexavalent chromium wastewater that 15L initial concentration is 50mg/L, pH value is adjusted to 3.0, inhaleAttached 10min, after Magnetic Isolation 15min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the hexavalent chromium wastewater that 15L initial concentration is 50mg/L, starts new waste waterCycle for the treatment of, amount to carry out 16 times circulation, always process 240L waste water, result as shown in Figure 3, at 6 waste waterAfter cycle for the treatment of, when processing wastewater flow rate and reaching 90L, the waste strength of discharge is all at the national Industry Waste of 0.5mg/LBelow water discharge standard, since the 7th batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 8, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeezing into again 30L initial concentration is the pentavalent arsenic waste water of 20mg/L, and pH value is adjusted to 3.0, inhalesAttached 10min, after Magnetic Isolation 25min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the pentavalent arsenic waste water that 15L initial concentration is 20mg/L, starts new waste waterCycle for the treatment of, amounts to and carries out 18 circulations, always processes 540L waste water, and result as shown in Figure 4, useless at 14After water treatment circulation, when processing wastewater flow rate and reaching 420L, the waste strength of discharge is all in country's industry of 0.5mg/LBelow wastewater discharge standard, since the 15th batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 9, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeezing into again 30L initial concentration is the trivalent arsenic waste water of 20mg/L, and pH value is adjusted to 7.0, inhalesAttached 10min, after Magnetic Isolation 25min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the trivalent arsenic waste water that 15L initial concentration is 20mg/L, starts new waste waterCycle for the treatment of, amounts to and carries out 18 circulations, always processes 540L waste water, and result as shown in Figure 4, useless at 10After water treatment circulation, when processing wastewater flow rate and reaching 300L, the waste strength of discharge is all in country's industry of 0.5mg/LBelow wastewater discharge standard, since the 11st batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
The treating apparatus processing of embodiment 10, use embodiment 1
At ambient temperature, the 200g/L magnetic Nano level iron oxide particle adsorbent suspension of 250mL is addedIn reactor, squeeze into again the hexavalent chromium wastewater that 30L initial concentration is 20mg/L, pH value is adjusted to 3.0, inhaleAttached 10min, after Magnetic Isolation 25min, then gets waste water after treatment and sampling and measuring; In reactor, addEntering 250mL concentration is the NaOH eluent of 1mol/L, and wash-out 15min, after Magnetic Isolation 10min, by wash-outLiquid is got, and again in reactor, squeezes into the hexavalent chromium wastewater that 15L initial concentration is 20mg/L, starts new waste waterCycle for the treatment of, amount to carry out 18 times circulation, always process 540L waste water, result as shown in Figure 4, at 6 waste waterAfter cycle for the treatment of, when processing wastewater flow rate and reaching 180L, the waste strength of discharge is all at the national Industry Waste of 0.5mg/LBelow water discharge standard, since the 7th batch of waste water, the waste strength of discharge exceedes the discharge standard of 0.5mg/L.
Claims (7)
1. a treating apparatus that contains the waste water of arsenic and chromium, is characterized in that:
Described treating apparatus comprises integrated reaction and separation device, magnetic adsorbent bucket, wastewater barrel and eluent bottle;
Described integrated reaction and separation device comprises reactor and is arranged on the magnechuck of described reactor bottom;
The import of described reactor respectively with described magnetic adsorbent bucket, described wastewater barrel and described eluent bottle phaseBe communicated with;
The outlet of described reactor is connected with water tank and fluid reservoir respectively;
Described reactor is a container;
Described treating apparatus also comprises adsorbent, and described adsorbent is magnetic iron oxide nano particle.
2. treating apparatus according to claim 1, is characterized in that: described reactor and described water storageBetween tank and described fluid reservoir, be also provided with a degree of depth separator, described degree of depth separator comprise sedimentation container andBe located at the permanent magnetic chuck of described sedimentation container bottom.
3. treating apparatus according to claim 1 and 2, is characterized in that: the import of described reactorAlso regulate acid solution bottle and pH to regulate alkali lye bottle to be connected with pH respectively;
In described reactor, be provided with a pH meter.
4. according to the treating apparatus described in any one in claim 1-2, it is characterized in that: described reactorImport be connected with described magnetic adsorbent bucket, described wastewater barrel and described eluent bottle by a pipeline;
Described pipeline is provided with a measuring pump I.
5. treating apparatus according to claim 1, is characterized in that: the port of export of described reactor connectsConnect a measuring pump II.
6. treating apparatus according to claim 1, is characterized in that: described reactor and described magneticIn adsorbent bucket, be equipped with agitator.
Described in claim 1 treating apparatus in the application of removing in arsenic in water and/or chromium.
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| ed magnetic nanomaterials for arsenic and chromium removal from water.《Chemical Engineering Journal》.2013, * |
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