CN104211209B - A kind of fluorescent penetrant detects the treatment process of waste water - Google Patents
A kind of fluorescent penetrant detects the treatment process of waste water Download PDFInfo
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- CN104211209B CN104211209B CN201410423823.5A CN201410423823A CN104211209B CN 104211209 B CN104211209 B CN 104211209B CN 201410423823 A CN201410423823 A CN 201410423823A CN 104211209 B CN104211209 B CN 104211209B
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- waste water
- fluorescent penetrant
- treatment process
- detects
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Abstract
The invention provides the treatment process that a kind of fluorescent penetrant detects waste water, concrete steps comprise Fe-modified alta-mud coagulation demulsification precipitation; Fenton oxidation, absorption, coagulating sedimentation and sock filtration; If when former water pollutant concentration is greater than 1000mg/L, after sock filtration, filtrate can enter the cotton cartridge filter of PP, then enters reverse osmosis membrane and filters, can keep stable, excellent effluent quality.Fluorescence waste water after the method process can reach GB8978-96 primary standard and directly discharge, does is COD less than 100? mg/L.
Description
Technical field
The present invention relates to field of waste water treatment, be specifically related to the treatment process that a kind of fluorescent penetrant detects waste water.
Background technology
Fluorescent penetrant detects and is widely used in the industrial circle such as Aeronautics and Astronautics, special equipment, and its non-destructive test(ing)(NDT) being mainly used in precision component detects.But, surface treatment before fluorescent penetrant detects needs to use a large amount of detection reagent, fluorescent penetrant that is a large amount of, high density can be produced in Cleaning of Parts process after detection and detect waste water, its main component comprises fluorescent agent, tensio-active agent, mineral oil and various chemical additive, and composition is very complicated.In general, the COD concentration that fluorescent penetrant detects waste water reaches 700mg/L ~ 8000mg/L, and oil concentration reaches 300mg/L ~ 700mg/L, if processed not in time, can cause very big pollution to environment.
At present, conventional fluorescent penetrant detects method of wastewater treatment and mainly comprises oxidation-coagulation precipitation-air supporting-activated carbon filter process, coagulating sedimentation-oxidation-coagulation precipitation-activated carbon filter process, oxidation-air supporting-with other waste water mixed biologic factures, waste water after first two disposal methods generally can reach GB8978-96 grade III Standard and enter urban sewage treatment system, COD is less than 500mg/L, then a kind for the treatment of process be after fluorescence Wastewater Pretreatment with lower concentration, good biodegradability other trade effluents mixing, to carry out follow-up biological treatment, waste water after process can reach GB8978-96 primary standard and directly discharge, such processing cost is relatively low.
But, increasingly strict along with environmental emission standard, the fluorescent penetrant of some enterprises detects waste water need process rear direct discharge, therefore in order to keep stablizing, excellent effluent quality, the better fluorescent penetrant of development effectiveness detects method of wastewater treatment and seems particularly important.
Summary of the invention
Technical problem solved by the invention is to provide a kind of fluorescent penetrant to detect the treatment process of waste water, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Fluorescent penetrant detects a treatment process for waste water, comprises the following steps:
(1) coagulation demulsification precipitation: get a certain amount of fluorescent penetrant and detect waste water, adjust ph to 8 ~ 9, add coagulating agent, stir, precipitation, gets middle part clear liquid;
(2) Fenton oxidation: the middle part clear liquid to step (1) adds sulfuric acid, adjust ph to 3 ~ 4, adds ferrous salt and H successively
2o
2, fully stir and carry out Fenton oxidation reaction;
(3) absorption and coagulation precipitation: add sorbent material in the reacted mixed solution of Fenton oxidation, stir, adjust ph to 8 ~ 9, drop into coagulating agent, stir, filter with filter plant, obtain filtrate.
In the treatment process of above-mentioned waste water, preferably, step (1) is respectively Fe-modified alta-mud, polymerize aluminum chloride with the coagulating agent in step (3), and dosage is respectively 1 ~ 5g/L and 0.1 ~ 0.3g/L.
In the treatment process of above-mentioned waste water, preferably, the sorbent material in step (3) is Powdered Activated Carbon.
In the treatment process of above-mentioned waste water, preferably, the filter plant in step (3) is bag type filtering equipment, and its sock filtration precision is 1 ~ 5 μm.
In the treatment process of above-mentioned waste water, preferably, if when the pollutent COD concentration of fluorescent penetrant detection waste water is greater than 1000mg/L, after filtering with filter plant, filter water outlet and enter the cotton cartridge filter of PP, then enter reverse osmosis membrane.
In the treatment process of above-mentioned waste water, preferably, reverse osmosis membrane model is Tao Shi BW30-4040, and operating pressure is 0.5MPa ~ 1.5MPa.
In the treatment process of above-mentioned waste water, preferably, step (1) and step (3) are all by adding lime adjust ph to 8 ~ 9.
In the treatment process of above-mentioned waste water, preferably, in step (2), ferrous salt dosage counts the volume of 40 ~ 80mg/L(relative to waste water with ferro element), ferro element and H
2o
2mass ratio be 1: 10 ~ 35.
In the treatment process of above-mentioned waste water, preferably, described ferrous salt selects FeSO
47H
2o.
Beneficial effect of the present invention is: adopt inorganic Fe-modified alta-mud Coagulation and Adsorption agent to replace polymerize aluminum chloride and polyacrylamide combination coagulating agent, avoid the organic contamination that polyacrylamide organic floculant brings; Gac has better adsorption effect in acid condition; Adopt immersion bag type filtering equipment, more traditional air supporting and gravitational settling have better mud-water separation effect; Adopt reverse osmosis membrane treatment system, stable, excellent effluent quality can be kept.Fluorescence waste water after the method process can reach GB8978-96 primary standard and directly discharge, and COD is less than 100mg/L.
Embodiment
Fluorescent penetrant detects an embodiment for the treatment process of waste water, comprises the following steps:
(1) coagulation demulsification precipitation: get a certain amount of fluorescent penetrant and detect waste water, with lime, waste water ph is adjusted to 8 ~ 9, wherein dosing coagulant Fe-modified alta-mud, dosage is 1 ~ 5g/L, stirs 1min, precipitation 30min, gets middle part clear liquid.
(2) Fenton oxidation: add sulfuric acid in the clear liquid of middle part, regulates pH to 3 ~ 4, adds FeSO successively
47H
2o and H
2o
2, FeSO
47H
2in O, the dosage of ferro element is that 40 ~ 80mg/L(is relative to wastewater volume), ferro element and H
2o
2mass ratio be 1: 10 ~ 35, stirring reaction 5h.
(3) absorption and coagulation precipitation: after Fenton reaction, add 2 ~ 8g/L Powdered Activated Carbon in mixed solution, stirring reaction 15 ~ 45min; With lime, mixed solution pH value is adjusted to 8 ~ 9, wherein dosing coagulant polymerize aluminum chloride, dosage is 0.1 ~ 0.3g/L, stirs 1min, filters with 1 μm of bag type filtering equipment.
(4) reverse osmosis membrane system: when former water pollutant concentration is higher, for ensureing stably reaching standard discharge, filtrate enters reverse osmosis membrane treatment system and filters, and filters water outlet and enters the cotton cartridge filter of PP, enter Tao Shi BW30-4040 reverse osmosis membrane, operating pressure 0.5MPa-1.5MPa.
For the ease of understanding the present invention, hereafter will do to describe more comprehensively, meticulously to the present invention in conjunction with specification sheets preferred embodiment.
embodiment 1
(1) coagulation demulsification precipitation: get 1L fluorescent penetrant and detect the former water of waste water in beaker, former water COD is 2025mg/L, oil concentration 350mg/L, is adjusted to 8 ~ 9 with lime by waste water ph, wherein dosing coagulant Fe-modified alta-mud, dosage is 2g/L, stir 1min, precipitation 30min, get middle part clear liquid, clear liquid COD is down to 474mg/L, and oil concentration is down to 43mg/L.
(2) Fenton oxidation: add sulfuric acid in the clear liquid of middle part, regulates pH to 3.5, adds FeSO successively
47H
2o0.3g, H
2o
2(massfraction 30%) 4mL, after stirring reaction 5h, Fenton reaction, COD is down to 260mg/L, and oil concentration is down to 5.2mg/L.
(3) absorption and coagulation precipitation: after Fenton reaction, the dosage by 3g/L in mixed solution adds Powdered Activated Carbon, stirring reaction 15min; With lime, mixed solution pH value is adjusted to 8 ~ 9, wherein dosing coagulant PAC, dosage is 0.1g/L, stirs 1min, and filter with 1 μm of bag type filtering equipment, liquor C OD is down to 84mg/L, and oil concentration is down to 2.5mg/L.
embodiment 2
(1) coagulation demulsification precipitation: get 1L fluorescent penetrant and detect the former water of waste water in beaker, former water COD is 5540mg/L, oil concentration 470mg/L, with lime, waste water ph is adjusted to 8 ~ 9, wherein dosing coagulant Fe-modified alta-mud, dosage is 3g/L, stir 1min, precipitation 30min.Get middle part clear liquid, clear liquid COD is down to 2200mg/L, and oil concentration is down to 67mg/L.
(2) Fenton oxidation: add sulfuric acid in the clear liquid of middle part, regulates pH to 3.5, adds FeSO
47H
2o0.35g, H
2o
2(massfraction 30%) 7mL, after stirring reaction 5h, Fenton reaction, COD is down to 910mg/L, and oil concentration is down to 7.6mg/L.
(3) absorption and coagulation precipitation: after Fenton reaction, add 6g/L Powdered Activated Carbon, stirring reaction 15min in mixed solution; With lime, mixed solution pH value is adjusted to 8 ~ 9, wherein dosing coagulant PAC, dosage is 0.15g/L, stirs 1min, and filter with 1 μm of bag type filtering equipment, liquor C OD is down to 650mg/L, and oil concentration is down to 2mg/L.
(4) reverse osmosis membrane system: for ensureing stably reaching standard discharge, filtrate enters reverse osmosis membrane treatment system and filters, filters water outlet and enters the cotton cartridge filter of PP, enter Tao Shi BW30-4040 reverse osmosis membrane, operating pressure 0.7MPa.Liquor C OD is down to 75mg/L, and oil concentration is down to 0.01mg/L.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. fluorescent penetrant detects a treatment process for waste water, it is characterized in that, comprises the following steps:
(1) coagulation demulsification precipitation: get a certain amount of fluorescent penetrant and detect waste water, adjust ph to 8 ~ 9, add coagulating agent, stir, precipitation, gets middle part clear liquid; Described coagulating agent is Fe-modified alta-mud, and its dosage is 1 ~ 5g/L;
(2) Fenton oxidation: the middle part clear liquid to step (1) adds sulfuric acid, adjust ph to 3 ~ 4, adds ferrous salt and H successively
2o
2, fully stir and carry out Fenton oxidation reaction;
(3) absorption and coagulation precipitation: add sorbent material in the reacted mixed solution of Fenton oxidation, stir, adjust ph to 8 ~ 9, drop into coagulating agent, stir, filter with filter plant, obtain filtrate; Described sorbent material is Powdered Activated Carbon; Described coagulating agent is polymerize aluminum chloride, and dosage is 0.1 ~ 0.3g/L; Described filter plant is bag type filtering equipment, and its sock filtration precision is 1 ~ 5 μm.
2. a kind of fluorescent penetrant as claimed in claim 1 detects the treatment process of waste water, it is characterized in that, if when the pollutent COD concentration of fluorescent penetrant detection waste water is greater than 1000mg/L, after filtering with filter plant, filter water outlet and enter the cotton cartridge filter of PP, then enter reverse osmosis membrane.
3. a kind of fluorescent penetrant as claimed in claim 2 detects the treatment process of waste water, and it is characterized in that, described reverse osmosis membrane model is Tao Shi BW30-4040, and operating pressure is 0.5MPa-1.5MPa.
4. a kind of fluorescent penetrant as claimed in claim 1 detects the treatment process of waste water, it is characterized in that, described step (1) and step (3) are all by adding lime adjust ph to 8 ~ 9.
5. a kind of fluorescent penetrant as claimed in claim 1 detects the treatment process of waste water, and it is characterized in that, in described step (2), ferrous salt dosage counts 40 ~ 80mg/L with ferro element, and this concentration is the concentration relative to wastewater volume, ferro element and H
2o
2mass ratio be 1: 10 ~ 35.
6. a kind of fluorescent penetrant as described in claim 1 or 5 detects the treatment process of waste water, and it is characterized in that, described ferrous salt selects FeSO
47H
2o.
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| CN103755069A (en) * | 2014-01-03 | 2014-04-30 | 上海丰信环保科技有限公司 | Treatment method for reducing COD (chemical oxygen demand) value of cleaning station wastewater of fluorescent penetrant testing |
| CN106186538A (en) * | 2016-08-17 | 2016-12-07 | 潘明华 | The processing method of antibiotic in a kind of waste water |
| CN108793537A (en) * | 2018-07-02 | 2018-11-13 | 武夷学院 | A kind of processing method of laboratory waste water |
| CN108996852A (en) * | 2018-09-13 | 2018-12-14 | 权锐无损检测工程装备制造（上海）有限公司 | A kind of fluorescent penetrant detection zero liquid discharge process technique of waste water |
| CN110921894A (en) * | 2019-11-28 | 2020-03-27 | 贵州省创伟道环境科技有限公司 | Fluorescent wastewater treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391833A (en) * | 2007-09-17 | 2009-03-25 | 上海理工大学 | Filter tank type membrane bioreactor |
| CN102503007A (en) * | 2011-11-25 | 2012-06-20 | 天津泰林森工贸有限公司 | Oil-base mud discharge treatment method |
| CN103553234A (en) * | 2013-10-21 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Method for treating sewage generated during fluorescent penetrant testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011050900A (en) * | 2009-09-03 | 2011-03-17 | Fuji Xerox Co Ltd | Water treatment apparatus and water treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391833A (en) * | 2007-09-17 | 2009-03-25 | 上海理工大学 | Filter tank type membrane bioreactor |
| CN102503007A (en) * | 2011-11-25 | 2012-06-20 | 天津泰林森工贸有限公司 | Oil-base mud discharge treatment method |
| CN103553234A (en) * | 2013-10-21 | 2014-02-05 | 中国航空工业集团公司北京航空材料研究院 | Method for treating sewage generated during fluorescent penetrant testing |
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