CN103466779A - Sewage decoloration method - Google Patents
Sewage decoloration method Download PDFInfo
- Publication number
- CN103466779A CN103466779A CN201310448287XA CN201310448287A CN103466779A CN 103466779 A CN103466779 A CN 103466779A CN 201310448287X A CN201310448287X A CN 201310448287XA CN 201310448287 A CN201310448287 A CN 201310448287A CN 103466779 A CN103466779 A CN 103466779A
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- CN
- China
- Prior art keywords
- sewage
- decoloration
- pond
- decolouring
- discoloring agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010865 sewage Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 5
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000016615 flocculation Effects 0.000 claims description 10
- 238000005189 flocculation Methods 0.000 claims description 10
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000005352 clarification Methods 0.000 abstract 2
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 abstract 1
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 abstract 1
- 239000005708 Sodium hypochlorite Substances 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Images
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a sewage decoloration method. A chemical oxidation method is adopted in the sewage decoloration method. The sewage decoloration method is characterized in that sewage which is treated with biotechnology is conveyed into a first decoloration tank through a pump, and meanwhile moderate decoloration agents A are added into the first decoloration tank. The sewage in the first decoloration tank is conveyed into a second decoloration tank through a pump, and meanwhile moderate decoloration agents B are added into the second decoloraton tank. The sewage in the second decoloration tank is conveyed into a waste water clarification tank through a pump, meanwhile, flocculants are added into the clarification tank for standing for 1-2h, and clear water is discharged, wherein the chromaticity of the clear water is smaller than 50. The decoloration agents A comprise, by weight, 30-60% of calcium hypochlorite, 30-40% of sodium hypochlorite and 0-40% of 10% hypochlorous acid solution. The moderate decoloration agents B comprise, by weight, 10-20% of acetic acid, 75-89% of 30% hydrogen peroxide solution and 1-5% of ozone. The sewage decoloration method has the advantages of being simple in technology, good in discharged water quality, low in chromaticity and the like.
Description
Technical field
The present invention relates to a kind of sewage decoloring method, belong to technical field of sewage.
Background technology
GB8978-1996 " integrated wastewater discharge standard " to the emission request of colourity (extension rate method) is: first discharge standard: dyestuffs industries 50; Other discharge unit 50; Mining, ore dressing, coal preparation industry 100; Lode gold ore dressing 100; Secondary discharge standard: dyestuffs industries 180; Other discharge unit 80; Mining, ore dressing, coal preparation industry 300; Lode gold ore dressing 500.GB18919-2002 " urban wastewater treatment firm pollutant emission standard " regulation, colourity (extension rate method) emission standard one-level is 30; Secondary 40; Three grades is 50.From two above-mentioned GBs, find out, sewage drainage standard is very strict to this index of colourity.Therefore the decolouring of sewage processing is an important operation in sewage treatment process, is also the difficult point of sewage treatment process.From the sewage disposal technology of current application, say, the method that can effectively remove Colority of Sewage Water has absorption method, Coagulation Method, biological process, membrane separation process, chemical oxidization method one-level electricity flocculence etc.Wherein chemical oxidization method has technical maturity, cost is low, processing efficiency is high, and quality is good.The principle of chemical oxidation decolouring is utilize oxygenant to destroy the unsaturated group of the substance that show color in sewage and chromophoric group and reach the decolouring purpose.Discoloring agent with strong oxidisability also has the effect of decomposing substance that show color, reaches the purpose of thorough decolouring.Therefore chemical oxidization method can be applicable to be difficult to utilize the sewage decoloring of other method decolouring to be processed.But the discoloring agent major ingredient that chemical oxidization method is used at present is Losantin, clorox, hypochlorous acid etc., although therefore the sewage colourity after decolouring is low, but water quality contains a small amount of reactive chlorine, and reactive chlorine has strong toxicity to biomass cells, can endanger waterplant and animal, and threaten the mankind's health.
Summary of the invention
The objective of the invention is to disclose that an active chlorine species residual quantity is low, the sewage decoloring rate is high, the sewage decoloring method that effluent quality colourity is low.
Technical scheme of the present invention is:
The sewage decoloring method, to adopt the method for chemical oxidization method to sewage decoloring, it is characterized in that: the sewage of processing through biotechnology enters to decolour for No. one by pump delivery in pond, a decolouring pond adds appropriate discoloring agent A simultaneously, the sewage of a decolouring in the pond, pond enters in No. two waste water decoloring ponds by pump delivery, and No. two decolouring ponds add appropriate discoloring agent B simultaneously; The sewage of No. two decolourings in pond enters in settling pond by pump delivery, adds flocculation agent in settling pond simultaneously, and standing 1～2h, discharge clear water, and the colourity of clear water is less than 50.
Described discoloring agent A is comprised of the raw material of following weight percentage:
Losantin 30～60%;
Clorox 30～40%;
10% hypochloric acid water solution 0～40%;
First discoloring agent A is made into to the aqueous solution of weight content 5% before using with clear water.
Described discoloring agent B is comprised of the raw material of following weight percentage:
Acetic acid 10～20%;
30% hydrogen peroxide solution 75～89%;
Ozone 1～5%;
First discoloring agent B is made into to the aqueous solution of weight content 5% before using with clear water.
Described flocculation agent is polymerize aluminum chloride or bodied ferric sulfate, and every cubic metre of 0.5～1Kg flocculation agent for sewage, with first with clear water, flocculation agent being made into to the solution that weight content is 1% before.
In the sewage decoloring treating processes, the add-on of discoloring agent A and discoloring agent B can be regulated according to the height of colourity in sewage, owing to adopting two sections decoloration process, the add-on of discoloring agent is easy to control, generally in a decolouring pond, can add more discoloring agent A, and make the colourity of waste water that out enters No. two decolouring ponds from decolouring pond maintain 50～70, then in No. two decolouring ponds, continue sewage is decoloured, because discoloring agent B is that the strong oxidizing property material is hydrogen peroxide, ozone and Peracetic Acid (product that acetic acid and ozone react and obtains), they are water with the product of colour developing group generation chemical reaction, oxygen, and low molecule organic matter, and excessive discoloring agent B can decompose voluntarily, produce water, oxygen and acetic acid, therefore unharmful substance is residual, harmless to biology.
The positively effect that the present invention produces:
1. sewage water treatment method of the present invention adopts two sections decoloration process, the first paragraph decolouring adopts cheap discoloring agent A, by observing from color and the check of a decolouring pond water out, the residual activity chlorine of known road water outlet, adjust in time the add-on of discoloring agent A, control water outlet residual activity chlorine.
2. the decolouring of the second segment of sewage water treatment method of the present invention adopts efficient decolorizing, the residual discoloring agent B of unharmful substance, can effectively further decolour the sewage through a decolouring pond decolouring, reduce colourity, make effluent quality reach national sewage first discharge standard.
The accompanying drawing explanation
Fig. 1 is equipment, the process flow sheet of sewage decoloring method of the present invention;
In figure, the device name of numbering representative is:
1 sewage lagoon; No. 2 decolouring ponds; 3 No. two decolouring ponds; 4 settling ponds; 5 discoloring agent A storage tanks; 6 discoloring agent B storage tanks; 7 flocculation agent storage tanks.
Embodiment
The equipment that sewage decoloring method of the present invention adopts and technical process be as shown in Figure 1:
Sewage is conveyed into the pond 2 of decolouring for No. from sewage lagoon 1 by pump, by pump, discoloring agent A is squeezed into to decolouring pond 2 No. one from discoloring agent A storage tank 5 simultaneously; The waste water in a decolouring pond 2 is conveyed into No. two decolouring pond 3 from the bottom, pond with pump, by pump, discoloring agent B is squeezed into the pond 3 of decolouring for No. two from discoloring agent B storage tank 6 simultaneously; The waste water in No. two decolouring ponds 3 is conveyed into settling pond 4 from the bottom, pond with pump; The decolouring of sewage is to process continuously.
Composition and the decolorizing effect of discoloring agent are as shown in the table:
Table 1: the composition of each embodiment discoloring agent A and discoloring agent B, and the selection of flocculation agent
Table 2: the decolorizing effect of each embodiment:
From the table data find out, adopt decoloring method of the present invention to process sewage decoloring, effluent quality is good, colourity is low, meets or exceeds country-level A emission standard.
Claims (4)
1. a sewage decoloring method, to adopt the method for chemical oxidization method to sewage decoloring, it is characterized in that: the sewage of processing through biotechnology enters to decolour for No. one by pump delivery in pond, a decolouring pond adds appropriate discoloring agent A simultaneously, the sewage of a decolouring in the pond, pond enters in No. two decolouring ponds by pump delivery, and No. two decolouring ponds add appropriate discoloring agent B simultaneously; The sewage of No. two decolourings in pond enters in the waste water settling pond by pump delivery, adds flocculation agent in settling pond simultaneously, and standing 1～2h, discharge clear water, and the colourity of clear water is less than 50.
2. sewage decoloring method as claimed in claim 1, is characterized in that, described discoloring agent A is comprised of the raw material of following weight percentage:
Losantin 30～60%;
Clorox 30～40%;
10% hypochloric acid water solution 0～40%;
First discoloring agent A is made into to the aqueous solution of weight content 5% before using with clear water.
3. sewage decoloring method as claimed in claim 1, is characterized in that, described discoloring agent B is comprised of the raw material of following weight percentage:
Acetic acid 10～20%;
30% hydrogen peroxide solution 75～89%;
Ozone 1～5%;
First discoloring agent B is made into to the aqueous solution of weight content 5% before using with clear water.
4. sewage decoloring method as claimed in claim 1, is characterized in that, described flocculation agent is polymerize aluminum chloride or bodied ferric sulfate, and every cubic metre of 0.5～1Kg flocculation agent for sewage, with first with clear water, flocculation agent being made into to the solution that weight content is 1% before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448287.XA CN103466779B (en) | 2013-09-27 | 2013-09-27 | Sewage decoloration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448287.XA CN103466779B (en) | 2013-09-27 | 2013-09-27 | Sewage decoloration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103466779A true CN103466779A (en) | 2013-12-25 |
| CN103466779B CN103466779B (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310448287.XA Active CN103466779B (en) | 2013-09-27 | 2013-09-27 | Sewage decoloration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103466779B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129285A (en) * | 2018-01-23 | 2018-06-08 | 山东亚科环保科技有限公司 | A kind of new method of cyclohexanone decoloration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647991A (en) * | 1987-06-29 | 1989-01-11 | Chusho Kigyo Jigyodan | Method and device for reutilizing of waste cleaning water |
| CN1092386A (en) * | 1993-03-19 | 1994-09-21 | 津普罗环境有限公司 | The processing of highly colored wastewaters |
| JPH09271787A (en) * | 1996-04-03 | 1997-10-21 | Mitsubishi Gas Chem Co Inc | Method of decolorizing dyestuff containing water solution |
| CN1587119A (en) * | 2003-08-26 | 2005-03-02 | 山东泉林纸业有限责任公司 | Decoloring method for paper-making middle section water |
| CN101671084A (en) * | 2008-09-09 | 2010-03-17 | 株式会社日立制作所 | Liquid processor |
-
2013
- 2013-09-27 CN CN201310448287.XA patent/CN103466779B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS647991A (en) * | 1987-06-29 | 1989-01-11 | Chusho Kigyo Jigyodan | Method and device for reutilizing of waste cleaning water |
| CN1092386A (en) * | 1993-03-19 | 1994-09-21 | 津普罗环境有限公司 | The processing of highly colored wastewaters |
| JPH09271787A (en) * | 1996-04-03 | 1997-10-21 | Mitsubishi Gas Chem Co Inc | Method of decolorizing dyestuff containing water solution |
| CN1587119A (en) * | 2003-08-26 | 2005-03-02 | 山东泉林纸业有限责任公司 | Decoloring method for paper-making middle section water |
| CN101671084A (en) * | 2008-09-09 | 2010-03-17 | 株式会社日立制作所 | Liquid processor |
Non-Patent Citations (1)
| Title |
|---|
| 罗灯洪 等: ""活性染色废水的均相催化臭氧脱色"", 《印染》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129285A (en) * | 2018-01-23 | 2018-06-08 | 山东亚科环保科技有限公司 | A kind of new method of cyclohexanone decoloration |
| CN108129285B (en) * | 2018-01-23 | 2021-02-19 | 山东亚科环保科技有限公司 | Cyclohexanone decoloring method |
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| Publication number | Publication date |
|---|---|
| CN103466779B (en) | 2015-02-11 |
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