CN106000238B - The processing unit of hardly degraded organic substance in a kind of removal waste water - Google Patents
The processing unit of hardly degraded organic substance in a kind of removal waste water Download PDFInfo
- Publication number
- CN106000238B CN106000238B CN201610525103.9A CN201610525103A CN106000238B CN 106000238 B CN106000238 B CN 106000238B CN 201610525103 A CN201610525103 A CN 201610525103A CN 106000238 B CN106000238 B CN 106000238B
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- waste water
- reaction tube
- supporting plate
- water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0242—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical
- B01J8/025—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical in a cylindrical shaped bed
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of processing units of hardly degraded organic substance in removal waste water, comprising: a mixing unit, the first reservoir and second reservoir to contain waste water including one to contain persulfate solution；An at least reaction tube, there is a supporting plate in it, it is mixed zone under supporting plate, filled with iron filings to constitute reaction column on supporting plate, supporting plate has the through-hole of several array arrangements, the water inlet of reaction tube is located at the lower section of supporting plate, and the water outlet of reaction tube is located on reaction column, so that water outlet is uniform and prevents the loss of iron filings；With a collection device；First reservoir is connected by one first delivery pump and an inlet tube with the water inlet of reaction tube, and the second reservoir is connected by one second delivery pump with the water inlet of reaction tube, and collection device is connected with the water outlet of reaction tube.Present invention process is simple, can well less, the advantages that operating cost is low, easy to operate, while realizing the recycling of waste iron filing.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of processing dress for removing hardly degraded organic substance in waste water
It sets.
Background technique
With the rapid development of economy, demand of the people to substance is continuously improved, in waste water, hardly degraded organic substance is increasingly
More, by taking dye industry as an example, waste water from dyestuff discharge amount is high, COD is high, coloration is high, and water quality is unstable, belongs to refractory reason
Waste water[1].Common hardly degraded organic substance, such as waste water from dyestuff, oily waste water, cause with traditional bioremediation compared with
For difficulty, therefore it is badly in need of developing the organic wastewater with difficult degradation thereby treatment process of simple and efficient[2]。
Iron filings are a kind of environmental sounds, the cheap and metal that easily obtains, it can not only substitute Fe2+As activation
Agent, while Fe can be recycled on its surface3+, the hydroxide for reducing iron in reaction process, which precipitates, to be generated[3], there is effect
The advantages such as good, at low cost and environmentally friendly.Iron filings, which can slowly dissolve, releases ferrous ion, can effectively activate
Persulfate generates potentiometric titrations and comes degradation of dye active blue 19 and organic compound[4-6].Therefore iron filings activate persulfuric acid
The pollution of salt oxidation processes receives extensive attention[7-9].Iron filings can pass through the corruption of iron filings under conditions of aerobic or anaerobism
Erosion dissolution releases ferrous ion, and in acid condition, this process is more quick[10].Iron filings slowly discharge ferrous iron
Ion can activate persulfate and generate free radicals, and not only avoid excessive ferrous ion and potentiometric titrations reaction,
Lead to the consumption of free radical, while the Direct electron transfer of iron filings can also activate persulfate and generate free radicals[11].Iron filings are filled out
Reaction column is filled after being passed through persulfate, and reaction equation is as follows:
It is reported according to the research of H.Kusic et al.[12], at optimum conditions, Fe0/S2O8 2-And Fe2+/S2O8 2-System pair
The mineralization rate of pollutant is respectively 53.36% and 34.89%, it is clear that the effect that persulfate is activated with iron filings can compare
It is good.Existing research is carried out primarily directed to beaker experiments, is suitable for intermittent duty process and laboratory lab scale.And it is industrial normal
Continuous operation process also lacks corresponding processing equipment and technique.
Summary of the invention
It is an object of the invention to overcome prior art defect, a kind of processing for removing hardly degraded organic substance in waste water is provided
Device.
The specific technical solution of the present invention is as follows:
The processing unit of hardly degraded organic substance in a kind of removal waste water, comprising:
One mixing unit, including one to contain the first reservoir and one of persulfate solution to contain the second of waste water
Reservoir；
An at least reaction tube, it is interior that there is a supporting plate, it is mixed zone under supporting plate, iron filings is filled on supporting plate with structure
At reaction column, supporting plate has the through-hole of several array arrangements, and the water inlet of reaction tube is located at the lower section of supporting plate, reaction tube
Water outlet is located on reaction column, so that water outlet is uniform and prevents the loss of iron filings；
With a collection device；
First reservoir is connected by one first delivery pump and an inlet tube with the water inlet of reaction tube, the second reservoir
It is connected by one second delivery pump with the water inlet of reaction tube, collection device is connected with the water outlet of reaction tube；
The method of the processing waste water of the processing unit is as follows:
(1) persulfate solution is added in the first reservoir, waste water is added in the second reservoir, by the persulfate
Solution and waste water pass through the first delivery pump respectively and the second conveying is pumped into the mixed zone of reaction tube, persulfate solution and waste water
Mixed liquor mixed zone residence time be 10~50s；
(2) above-mentioned mixed liquor enters reaction column by supporting plate from mixed zone, controls mixed liquor in the stop of reaction column
Between be 5~30min, sufficiently to be reacted, water after must handling；
(3) water enters in collection device from the outflow of the water outlet of reaction tube after handling.
In a preferred embodiment of the invention, the partial size of the iron filings is 1~5mm.
In a preferred embodiment of the invention, the diameter of the through-hole is 1~5mm, and is less than the partial size of iron filings.
It is further preferred that the gross area of the through-hole is the 15~30% of the supporting plate gross area.
In a preferred embodiment of the invention, the draw ratio of the reaction tube is 15~30:1.Further preferably
, the draw ratio of the reaction tube is 20~22:1.
In a preferred embodiment of the invention, in the step (1): the concentration of persulfate solution be 90~
110mmol/L, the RB5 solubility of waste water are 45~60mg/L.
The beneficial effects of the present invention are:
1, it can effectively activate that persulfate generates free radicals and reaction column can be iron filings the present invention is based on iron filings
Enough times of contact and area are provided with persulfate, passes through continuous optimum organization and reasonable design operation condition, system
It is difficult to generate free radicals processing with the methods of traditional heating activation persulfuric acid for the technique for making a kind of efficient hardly degraded organic substance
Degradation of organic waste water is compared, have many advantages, such as simple process, can well less, operating cost it is low, easy to operate, while realizing waste iron filing
Recycling.
2, persulfate solution and waste water are sent into mixed zone by processing unit of the invention, are conducive to oxidant and difficult to degrade
Organic wastewater is sufficiently mixed.
3, the supporting plate in the present invention has multiple through-holes, and iron filings are not only isolated, prevents it from falling into water inlet line and causes to block up
Plug, while extending residence time of the mixed liquor in reaction column.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of processing unit of the invention.
Fig. 2 is the structural schematic diagram of the supporting plate of processing unit of the invention.
Fig. 3 be in a specific embodiment of the invention persulfate flow to the influence diagram of waste water from dyestuff removal effect it
One.
Fig. 4 be in a specific embodiment of the invention persulfate flow to the influence diagram of waste water from dyestuff removal effect it
Two.
Fig. 5 is one of the treatment effect figure of waste water from dyestuff during continuous operation in a specific embodiment of the invention.
Fig. 6 is two of the treatment effect figure of waste water from dyestuff during continuous operation in a specific embodiment of the invention.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment combination attached drawing.
As shown in Figure 1, a kind of processing unit for removing hardly degraded organic substance in waste water, including a mixing unit, a reaction tube 2
With a collection device 3.
Mixing unit, including one to contain the first reservoir 11 and one of persulfate solution to contain the second of waste water
Reservoir 13；
Reaction tube 2, resistant material is made, draw ratio 20, the interior 21 (corrosion resistant of supporting plate for being 15mm with a diameter
Corrosion material is made), lower supporting plate 21 is mixed zone, and it is the iron filings 100g of 1~2mm to constitute that partial size is filled on supporting plate 21
The reaction column 22 of 24cm high, as shown in Fig. 2, supporting plate 21 has the through-hole 210 of the diameter 1mm of several array arrangements, reaction tube 2
Water inlet 25 be located at the lower section of supporting plate 21, the water outlet 26 of reaction tube 2 is located on reaction column 22 so that water outlet uniformly and
Prevent the loss of iron filings；The gross area of above-mentioned through-hole 210 is the 15~30% of 21 gross area of supporting plate.
First reservoir 11 is connected by one first delivery pump 12 and an inlet tube with the water inlet 25 of reaction tube 2, the
Two reservoirs 13 are connected by one second delivery pump 14 with the water inlet 25 of reaction tube 2, and collection device 3 goes out with reaction tube 2
The mouth of a river 26 is connected；
The method of the processing waste water of the processing unit is as follows:
(1) it is 100mmol/L persulfate solution that concentration is added in the first reservoir 11, is added in the second reservoir 13
Enter the waste water that RB5 solubility is 50mg/L, the persulfate solution and waste water (flow 560mL/h) are passed through into the first conveying respectively
The mixed liquor of the mixed zone of pump 12 and the second delivery pump 14 feeding reaction tube 2, persulfate solution and waste water stops in mixed zone
Staying the time is 10~50s；
(2) above-mentioned mixed liquor enters reaction column 22 by supporting plate 21 from mixed zone, controls mixed liquor in reaction column 22
Residence time is 5min, sufficiently to be reacted, water after must handling, respectively control persulfate solution flow be 50mL/h,
30mL/h, 10mL/h, 5mL/h, processing result reach 85% or more as shown in Fig. 3 and Fig. 4, to RB5 removal rate.Such as figure
Shown in 5 and Fig. 6, select the flow of persulfate for 30mL/h, then continuous sample introduction 30h, removal rate reaches 90% or more,
And continuous effective, backwash and chemical cleaning are not needed in operational process；
(3) water enters in collection device 3 from the outflow of the water outlet 26 of reaction tube 2 after handling.
Reaction column 22 according to the present invention can effectively mix persulfate and waste water from dyestuff it has been confirmed by experiments that, mention
For the chance that enough residence times and oxidant and waste water come into full contact with, enough and lasting free radicals can be generated and come
Degradation of dye.The persulfate being passed through will guarantee the pH slant acidity of solution in reaction column 22, be beneficial to iron filings release ferrous iron
Ion, enable oxidation reaction continuous and effective operate without carry out iron filings pickling.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (5)
1. the processing unit of hardly degraded organic substance in a kind of removal waste water, it is characterised in that: include:
One mixing unit, the first reservoir and second liquid storage to contain waste water including one to contain persulfate solution
Slot；
An at least reaction tube, it is interior that there is a supporting plate, it is mixed zone under supporting plate, it is anti-to constitute that iron filings is filled on supporting plate
Ying Zhu, supporting plate have the through-hole of several array arrangements, and the water inlet of reaction tube is located at the lower section of supporting plate, the water outlet of reaction tube
Mouth is located on reaction column, so that water outlet is uniform and prevents the loss of iron filings；The partial size of iron filings is 1~5mm, and the diameter of through-hole is
1~5mm, and it is less than the partial size of iron filings；
With a collection device；
First reservoir is connected by one first delivery pump and an inlet tube with the water inlet of reaction tube, and the second reservoir passes through
One second delivery pump is connected with the water inlet of reaction tube, and collection device is connected with the water outlet of reaction tube；
The method of the processing waste water of the processing unit is as follows:
(1) persulfate solution is added in the first reservoir, waste water is added in the second reservoir, by the persulfate solution
Pass through the first delivery pump respectively with waste water and the second conveying be pumped into the mixed zone of reaction tube, persulfate solution and waste water it is mixed
Closing residence time of the liquid in mixed zone is 10~50s；
(2) above-mentioned mixed liquor enters reaction column by supporting plate from mixed zone, and control mixed liquor is 5 in the residence time of reaction column
~30min, sufficiently to be reacted, water after must handling；
(3) water enters in collection device from the outflow of the water outlet of reaction tube after handling.
2. the processing unit of hardly degraded organic substance in a kind of removal waste water as described in claim 1, it is characterised in that: described logical
The gross area in hole is the 15~30% of the supporting plate gross area.
3. the processing unit of hardly degraded organic substance in a kind of removal waste water as described in claim 1, it is characterised in that: described anti-
Should pipe draw ratio be 15~30:1.
4. the processing unit of hardly degraded organic substance in a kind of removal waste water as claimed in claim 3, it is characterised in that: described anti-
Should pipe draw ratio be 20~22:1.
5. the processing unit of hardly degraded organic substance in a kind of removal waste water as described in claim 1, it is characterised in that: the step
Suddenly in (1): the concentration of persulfate solution is 90~110mmol/L, and the RB5 solubility of waste water is 45~60mg/L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610525103.9A CN106000238B (en) | 2016-07-05 | 2016-07-05 | The processing unit of hardly degraded organic substance in a kind of removal waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610525103.9A CN106000238B (en) | 2016-07-05 | 2016-07-05 | The processing unit of hardly degraded organic substance in a kind of removal waste water |
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| CN106000238A CN106000238A (en) | 2016-10-12 |
| CN106000238B true CN106000238B (en) | 2019-02-26 |
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| CN107331864B (en) * | 2017-06-21 | 2019-10-18 | 浙江大学 | A kind of cyano positive electrode and its preparation method and application |
| CN111689545A (en) * | 2020-07-01 | 2020-09-22 | 江西农业大学 | Method, combination and device for removing organic dye based on birnessite |
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|---|---|---|---|---|
| CN102992467A (en) * | 2012-12-10 | 2013-03-27 | 复旦大学 | Sewage treatment method adopting zero-valent scrap as carrier |
| JP5355882B2 (en) * | 2007-12-06 | 2013-11-27 | 中部電力株式会社 | Reaction tube sealing device for decomposition treatment device and method of using reaction tube sealing device for decomposition treatment device |
| CN104591426A (en) * | 2014-12-15 | 2015-05-06 | 南京理工大学 | Zero-valent iron reduction-Fenton oxidation integrated reaction device and method for treating nitroaromatic compound wastewater by using zero-valent iron reduction-Fenton oxidation integrated reaction device |
| CN105253983A (en) * | 2015-09-30 | 2016-01-20 | 中山大学 | Water treatment method of zero-valent iron-copper bi-metal activated persulfate |
| CN205868207U (en) * | 2016-07-05 | 2017-01-11 | 华侨大学 | Get rid of processing apparatus of difficult degradation organic matter in waste water |
-
2016
- 2016-07-05 CN CN201610525103.9A patent/CN106000238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5355882B2 (en) * | 2007-12-06 | 2013-11-27 | 中部電力株式会社 | Reaction tube sealing device for decomposition treatment device and method of using reaction tube sealing device for decomposition treatment device |
| CN102992467A (en) * | 2012-12-10 | 2013-03-27 | 复旦大学 | Sewage treatment method adopting zero-valent scrap as carrier |
| CN104591426A (en) * | 2014-12-15 | 2015-05-06 | 南京理工大学 | Zero-valent iron reduction-Fenton oxidation integrated reaction device and method for treating nitroaromatic compound wastewater by using zero-valent iron reduction-Fenton oxidation integrated reaction device |
| CN105253983A (en) * | 2015-09-30 | 2016-01-20 | 中山大学 | Water treatment method of zero-valent iron-copper bi-metal activated persulfate |
| CN205868207U (en) * | 2016-07-05 | 2017-01-11 | 华侨大学 | Get rid of processing apparatus of difficult degradation organic matter in waste water |
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