CN108726791A - A kind of processing method of high concentration oil-containing organic wastewater - Google Patents
A kind of processing method of high concentration oil-containing organic wastewater Download PDFInfo
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- CN108726791A CN108726791A CN201810376215.1A CN201810376215A CN108726791A CN 108726791 A CN108726791 A CN 108726791A CN 201810376215 A CN201810376215 A CN 201810376215A CN 108726791 A CN108726791 A CN 108726791A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- 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
- C02F1/722—Oxidation by peroxides
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- 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
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of processing methods of high concentration oil-containing organic wastewater, include the following steps：1) acid is added in high concentration oil-containing organic wastewater, it is 3-3.5 to adjust its hydrogen ionexponent；2) green vitriol is added and hydrogen peroxide mixing is reacted；3) solution after reacting is filtered；4) alkali is added in filtered solution, and it is 7.5-8.5 to adjust its hydrogen ionexponent；5) and then addition flocculant carries out flocculation reaction；6) biosystem processing is finally carried out；This method can obtain excellent effect to high concentration oil-containing treatment of Organic Wastewater, and reaction rate is very fast, save high concentration oil-containing treatment of Organic Wastewater cost.
Description
Technical field
The present invention relates to field of waste water treatment, and in particular to a kind of processing method of high concentration oil-containing organic wastewater.
Background technology
With the development of the social economy, the waste water pollution problem that process of industrialization is brought becomes increasingly conspicuous, environmental pollution is more next
More it is valued by people, and oil-containing and the waste water of grease type are common in numerous waste water, easily bring the work of environmental pollution
Industry and sanitary wastewater, harm is serious, and processing at home and abroad attracts great attention.At present in petrochemical industry, vehicle cleaning, machine
Oil-containing and the waste water of grease type are will produce during tool processing, food processing etc..Oil pollutant once enters water body at once
Oil film is diffuseed to form in the water surface, prevents water body reoxygenation from air.Oils migration circle is wide, degradation speed is slow, finally influences people
Class health.It is different with the existence form of oils in water according to the source of oily waste water, it can be divided into：Oil slick, dispersed oil, oil emulsion
With four major class of dissolved oil.These oil components are complicated, containing a large amount of mineral oil or vegetable oil, emulsifier and other organic principles,
Property is stable, removal difficulty is big.So how efficiently to carry out water-oil separating to reach discharge standard is still a problem.
Current existing treatment technology is difficult that excellent treatment effect is obtained to the waste water of oil-containing and grease, ought especially be contained
The waste water of high concentration oil and grease, when the component of this kind of waste water is more complex, oil-containing organic pollution is serious, and intractability also can phase
It answers larger.It would therefore be highly desirable to which a kind of appearance of the processing method of high concentration oil-containing organic wastewater, this method have high concentration oil-containing
Machine wastewater treatment can obtain excellent effect, and reaction rate is very fast.
Invention content
In order to solve the above technical problems, the purpose of the present invention is to provide a kind of processing sides of high concentration oil-containing organic wastewater
Method, this method can obtain excellent effect to high concentration oil-containing treatment of Organic Wastewater, and reaction rate is very fast, has saved highly concentrated
Spend oil-containing treatment of Organic Wastewater cost.
In order to achieve the above objectives, technical scheme is as follows：
A kind of processing method of high concentration oil-containing organic wastewater, includes the following steps：
1) acid is added in high concentration oil-containing organic wastewater, it is 3-3.5 to adjust its hydrogen ionexponent；
2) green vitriol is added and hydrogen peroxide mixing is reacted；
3) solution after reacting is filtered；
4) alkali is added in filtered solution, and it is 7.5-8.5 to adjust its hydrogen ionexponent；
5) and then addition flocculant carries out flocculation reaction；
6) biosystem processing is finally carried out.
A kind of processing method of high concentration oil-containing organic wastewater provided by the invention, this method are organic to high concentration oil-containing
Wastewater treatment can obtain excellent effect, and reaction rate is very fast, save high concentration oil-containing treatment of Organic Wastewater cost.
Green vitriol (FeSO is first added in step 2)4·7H2O it) is mixed, hydrogen peroxide (H is then added2O2), when containing
There is Fe2+Hydrogen peroxide is added in the acid solution of ion, it may occur that following reaction：
H2O2+Fe2+→Fe3++OH-+OH·(1)；
H2O2+Fe3+→Fe2++H++HO2·(2)；
It is to pass through Fe that whole system, which reacts key,2+Play excitation and transmission in the reaction, chain reaction enable to continue to carry out,
Until H2O2It exhausts；Hydroxyl radical free radical (OH) oxidability inspired in reaction is very strong, thus can effectively decompose difficult biology
The oil-containing organic matter (RH) of degradation, reaction are as follows：
RH+OH·→H2O+R·(3)；
R·+H2O2→ROH+OH·(4)；
Quickly, rate constant is 10 for the reaction speed of oil-containing organic matter in hydroxyl radical free radical and water11-1014mol·L-1·
s-1Range, it is inorganization that hydroxyl radical free radical can be such that oil-containing organic matter decomposes, and is convenient in this way to the follow-up of high concentration oil-containing organic wastewater
Processing.
Based on the above technical solution, the present invention can also improve as follows：
Preferably, acid described in step 1) is sulfuric acid.
Preferably, the reaction time is 0.5h-1.5h in step 2).
Preferably, any one of centrifugal filtration or paper tape filtering are filtered into step 3).
High concentration oil-containing organic wastewater is oil-in-water O/W, the sump oil in separation of high-concentration oil-containing organic wastewater more difficult in this way,
Using step 1) and step 2) reaction after, the sump oil in high concentration oil-containing organic wastewater is separated from water, the present embodiment use from
The heart filters or paper tape filtering filters out sump oil, avoids in step 4) after filtered solution addition alkali, formation oil-in-water O/W is mixed
Object is closed, can make the processing of high concentration oil-containing organic wastewater sump oil more abundant in this way.
Preferably, alkali described in step 4) is any in lime or sodium hydroxide.
Preferably, the mass percent of green vitriol described in step 2) and the hydrogen peroxide is 1: 2-1: 5.
Preferably, flocculant is polyacrylamide in step 5).
The flocculation of polyacrylamide flocculant in the treatment of waste water is two features due to it：Long-chain (line) shape
Contain a large amount of active groups in molecular structure and polyacrylamide amine molecule.Polyacrylamide is straight chain polymer, because of each point
Son is made of 100,000 or more monomer polymerizations, and strand is considerably long.If it is stretched completely, length is than general point
Sub (such as sucrose) or ion (such as ca2+) tens thousand of times long or more.Since its molecule is long and thin, it can be bent or be curled into and is irregular
Curve shape.This long chain stretches out many chemical active radicals outward：Amide groups-conh2 and carboxyl-coo-.Amide
Base is non-ionic group, but is also good at forming secondary valence key and adsorbing and link up with the active group of other materials.Due to
Polyacrylamide amine molecule is long and thin and there are many chemical active radical, they can and depositing particles generate many connections and formed compared with
The structure of big flocculate, these flocculates is such as cotton-wool, loose, amorphous, interlinks but not bery firm, inside has
Many spaces and many fine networks, contain big quantity of fluid, thus the proportion of flocculate is quite close to the liquid present in it
Itself.The various particles of network are gone back in flocculate, this is just by various heterogeneities, heterogeneity, different size of micro-
Grain gathers together.Therefore, polyacrylamide flocculant processing can remove the complete network of original particle in waste water, make waste water
Seem limpid transparent and glossy.
Preferably, further include filtering, being discharged step after filtering after flocculation reaction in step 5).
Preferably, it is any in aerobe processing or anaerobic bio-treated that step 6), which carries out biosystem processing,
Kind is several.
Anaerobic bio-treated is exactly that the organic matter in microbial degradation waste water, Aerobic biological process are exactly under anaerobic
Organic matter under aerobic conditions in microbial degradation waste water.The organic matter of anaerobic bio-treated macromolecule, mainly will be big
The organic matter of molecular weight resolve into the organic matter of relatively small molecular weight and by the organic matter of a portion be converted to methane etc. can profit
The energy, the smaller organic matter of waste water middle-molecular-weihydroxyethyl of the Aerobic biological process after anaerobic bio-treated are simultaneously broken down into nothing
Machine object；Therefore, excellent effect can be obtained to high concentration oil-containing treatment of Organic Wastewater.
Preferably, reaction temperature is 20 DEG C -25 DEG C in step 2)
Preferably, further include to biosystem treated wastewater recycle after step 6) carries out biosystem processing
The step of whether it reaches national wastewater discharge standard.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
Unless specifically stated otherwise, raw material used in following embodiment can be commercially available from regular channel.
Embodiment 1,
In order to reach the purpose of the present invention, a kind of processing method of high concentration oil-containing organic wastewater,
The processing method of the high concentration oil-containing organic wastewater of the present embodiment is marked as method 1, includes the following steps：
1) sulfuric acid is added in high concentration oil-containing organic wastewater, it is 3 to adjust its hydrogen ionexponent (pH value)；
2) green vitriol is added and hydrogen peroxide mixing is reacted, reacts 1h at 22 DEG C；
3) solution after reacting is filtered, described to be filtered into paper tape filtering；
4) sodium hydroxide is added in filtered solution, and it is 8 to adjust its hydrogen ionexponent；
5) and then addition polyacrylamide flocculant carries out flocculation reaction；
6) biosystem processing is finally carried out.
When sulfuric acid is added in high concentration oil-containing organic wastewater in step 1), it is 3 to adjust its hydrogen ionexponent (pH value),
The excessively high generations for not only inhibiting OH of PH, but also Fe can be made2+It precipitates as ferric hydroxide and loses catalytic capability；Work as PH
When too low, the H+ excessive concentrations in solution, Fe3+Fe cannot be smoothly reduced to2+,Catalysis reaction is obstructed, when pH value is 3,
Reaction effect is more preferable, and reaction rate is faster.
A kind of processing method of high concentration oil-containing organic wastewater of the present embodiment, method 1 to high concentration oil-containing organic wastewater at
Reason can obtain excellent effect, and reaction rate is very fast, has saved high concentration oil-containing treatment of Organic Wastewater cost.
Testing result proves a kind of processing method of the high concentration oil-containing organic wastewater provided in the present embodiment, to biology department
It reaches national wastewater discharge standard to system treated wastewater recycle, is discharged into the waste water of water body total sump oil percentage and is less than
30ppm, testing result prove that this method can obtain excellent effect, reaction rate to high concentration oil-containing treatment of Organic Wastewater
Comparatively fast, high concentration oil-containing treatment of Organic Wastewater cost has been saved.
Embodiment 2,
The processing method of the high concentration oil-containing organic wastewater of the present embodiment is marked as method 2, includes the following steps：
1) sulfuric acid is added in high concentration oil-containing organic wastewater, it is 3.5 to adjust its hydrogen ionexponent (pH value)；
2) green vitriol is added and hydrogen peroxide mixing is reacted, reacts 1.5h at 20 DEG C；
3) solution after reacting is filtered, described to be filtered into centrifugal filtration；
4) lime is added in filtered solution, and it is 8.5 to adjust its hydrogen ionexponent；
5) and then addition polyacrylamide flocculant carries out flocculation reaction；
6) biosystem processing is finally carried out.
When sulfuric acid is added in high concentration oil-containing organic wastewater in step 1), adjusting its hydrogen ionexponent (pH value) is
3.5, the PH excessively high generations for not only inhibiting OH, but also Fe can be made2+It precipitates as ferric hydroxide and loses catalytic capability；
When PH is too low, the H in solution+Excessive concentration, Fe3+Fe cannot be smoothly reduced to2+, catalysis reaction is obstructed, when pH value is
When 3.5, reaction effect is more preferable, and reaction rate is faster.
A kind of processing method of high concentration oil-containing organic wastewater of the present embodiment, method 2 to high concentration oil-containing organic wastewater at
Reason can obtain excellent effect, and reaction rate is very fast, has saved high concentration oil-containing treatment of Organic Wastewater cost.
Testing result proves a kind of processing method of the high concentration oil-containing organic wastewater provided in the present embodiment, to biology department
It reaches national wastewater discharge standard to system treated wastewater recycle, it is discharged into the waste water of water body total sump oil percentage and is less than
30ppm, testing result prove that this method can obtain excellent effect, reaction rate to high concentration oil-containing treatment of Organic Wastewater
Comparatively fast, high concentration oil-containing treatment of Organic Wastewater cost has been saved.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (10)
1. a kind of processing method of high concentration oil-containing organic wastewater, which is characterized in that include the following steps：
1) acid is added in high concentration oil-containing organic wastewater, it is 3-3.5 to adjust its hydrogen ionexponent；
2) green vitriol is added and hydrogen peroxide mixing is reacted；
3) solution after reacting is filtered；
4) alkali is added in filtered solution, and it is 7.5-8.5 to adjust its hydrogen ionexponent；
5) and then addition flocculant carries out flocculation reaction；
6) biosystem processing is finally carried out.
2. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that described in step 1)
Acid is sulfuric acid.
3. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that reaction in step 2)
Time is 0.5h-1.5h.
4. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that filtering in step 3)
For any one of centrifugal filtration or paper tape filtering.
5. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that described in step 4)
Alkali is any one or several in lime or sodium hydroxide.
6. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that described in step 2)
The mass percent of green vitriol and the hydrogen peroxide is 1: 2-1: 5.
7. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that flocculation in step 5)
Agent is polyacrylamide.
8. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that flocculation in step 5)
Further include filtering, being discharged step after filtering after reaction.
9. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that step 6) is given birth to
The processing of object system is any in aerobe processing or anaerobic bio-treated.
10. the processing method of high concentration oil-containing organic wastewater according to claim 1, which is characterized in that anti-in step 2)
It is 20 DEG C -25 DEG C to answer temperature.
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Citations (5)
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|---|---|---|---|---|
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| CN102701480A (en) * | 2012-06-04 | 2012-10-03 | 中国环境科学研究院 | Sewage treatment method |
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| CN103265148A (en) * | 2013-06-07 | 2013-08-28 | 文建方 | Method for treating wastewater in epoxy plasticizer production |
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2018
- 2018-04-24 CN CN201810376215.1A patent/CN108726791A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302065A (en) * | 2008-07-03 | 2008-11-12 | 濮阳市天地人环保工程技术有限公司 | Method for processing oil-gas field fracturing waste liquor |
| CN101734817A (en) * | 2009-12-31 | 2010-06-16 | 江苏苏净集团有限公司 | Method for treating organic chemical waste water |
| CN102701480A (en) * | 2012-06-04 | 2012-10-03 | 中国环境科学研究院 | Sewage treatment method |
| CN102910765A (en) * | 2012-11-20 | 2013-02-06 | 安徽新天环保科技有限公司 | Demulsifying and flocculating treatment method of machining cutting fluid sewage water |
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Application publication date: 20181102 |