CN108529781A - Emulsion technique for treating industrial wastewater - Google Patents
Emulsion technique for treating industrial wastewater Download PDFInfo
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- CN108529781A CN108529781A CN201710120171.1A CN201710120171A CN108529781A CN 108529781 A CN108529781 A CN 108529781A CN 201710120171 A CN201710120171 A CN 201710120171A CN 108529781 A CN108529781 A CN 108529781A
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- Prior art keywords
- water
- industrial wastewater
- emulsion
- treating industrial
- demulsifier
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Classifications
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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
-
- 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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a kind of emulsion technique for treating industrial wastewater.Mainly comprise the technical steps that:Water storage, demulsification, water-oil separating plus calcium hydroxide tune PH to 6 ~ 8, filtering removal precipitation, it is characterised in that：The waste acid water that the demulsifier is lathe mill, generates in Milling Machining mainly contains the hydrochloric acid and sulfuric acid of mass percentage 10% 15%, the iron ion of 80 ~ 120g/L in the waste acid water.The present invention turns waste into wealth waste acid water, reduces pollution of the directly outer row of waste acid water to water resource；Using the present invention treated water quality, water quality is clearly high-quality, low salinity, and processing cost is low.
Description
Technical field
The invention belongs to water-treatment technology fields, relate in particular to a kind of emulsion technique for treating industrial wastewater.
Background technology
China is the country of a shortage of water resources, is classified as one of 13 poor-water countries by the United Nations；Meanwhile China
Waters be also faced with the pressure of water pollution always, wherein industrial wastewater is the important pollution sources in waters.Emulsion is mainly
By 2~10% mineral oil and anionic or emulsifier, the additive of nonionic（Chlorine, sulphur, phosphorus etc.）It forms, has with water
The effects that cooling, lubrication, cleaning, antirust, cause after the processes such as cold rolling, broaching, fraising, polishing, smooth, cutting it is rotten and
It is discharged.Waste emulsified mixture is also very extensive as source distribution first of industrial wastewater, is carried out, mainly in Mechanical Processing Industry, especially
It is to be generated during the cutting of bearing and auto parts machinery processing enterprise, attrition process.It is this to contain with the rapid development of industry
The discharge capacity of oily waste water increases severely with day.Oily substance in waste emulsified mixture floats on the water surface, forms oil film, prevents in air
Oxygen is soluble in water, causes aquatile dead because of anoxic, finally water body is made to degenerate, and pollutes environment.Waste emulsified mixture, which removes, to be had generally
Outside the harm of oily waste water, due to the effect of surfactant, in water, animals and plants, aquatile are more for machinery oil high degree of dispersion
It easily absorbs, and surfactant itself is also harmful to biology, the noxious material that also some can be made not soluble in water is dissolved, and is passed through
Different approach eventually enter into human body, seriously endanger the health of human body.
Due to containing a certain number of surfactants in emulsion so that oil molecule and water molecules obtain especially jail
Gu therefore waste emulsified mixture processing is one kind most difficult in wastewater treatment.Existing waste emulsified mixture method of disposal have sedimentation,
Burning method, Bubble-floating Method etc., burning method are that waste emulsified mixture is carried out completely burned with high-temperature incinerator, the technique energy basic handling
Waste emulsified mixture, but the mineral oil contained in waste liquid is then wasted burning, can not fully recycle.Bubble-floating Method is to use machinery drum
Wind turbine carries out air blast stirring to waste emulsified mixture, adheres to the oleaginous material in waste liquid using minute bubbles as carrier, keeps its buoyancy big
In resistance, oleaginous material then on float on liquid level, be recycled to collect oil slick, but COD value in waste liquid（COD value refers to
Under certain condition, the amount for the oxidant that the reducing substances in one liter of water sample are consumed, referred to as COD are aoxidized,
It reflects the degree polluted by reducing substances in water）Still higher, ideal disposition effect cannot be reached.Sedimentation is main
It is to make grease simple separation by adding demulsifier, obtains the oil slick on upper layer, this is simple for process, but the effect unobvious disposed,
And it will produce secondarily polluted water.
Invention content
It is an object of the invention to solve the above problems, the waste acid water that lathe can be ground, generated during Milling Machining is provided
A kind of emulsion technique for treating industrial wastewater being applied in water process.
To solve the above-mentioned problems, the technical solution adopted by the present invention is as follows：
Emulsion technique for treating industrial wastewater, mainly comprises the technical steps that:
（1）The emulsion industrial wastewater come will be collected to be accumulated in buffer pool；
（2）Demulsifier is added by amount under the stirring of emulsion industrial wastewater, until water-oil separating；
（3）It stands, after grease is thoroughly layered, removes oil reservoir；
（4）Under stirring, calcium hydroxide is added, adjusts PH to 6 ~ 8；
（5）Filtering removal precipitation, obtains processing water；
It is characterized in that：The demulsifier is the waste acid water generated in lathe mill, Milling Machining, and matter is mainly contained in the waste acid water
Measure the hydrochloric acid and sulfuric acid of percentage composition 10%-15%, the iron ion of 80 ~ 120g/L.
The optimization of the present invention：The demulsifier, by pre-processing, removes the solid particle polluter in demulsifier using preceding.
It advanced optimizes：Step（3）In time of repose it is related with emulsion industrial wastewater height, time of repose（t——
Point）With emulsion industrial wastewater height（H --- centimetre）Between relationship be：t ≥ h/（3~5）.
It advanced optimizes：Step（4）In calcium hydroxide use mass percentage water-soluble for 20% ~ 50% calcium hydroxide
Liquid.
It advanced optimizes：Step（5）Filter device pore size filter be no more than 140 mesh.
It advanced optimizes：Step（5）After the completion, processing water can pass through activated carbon adsorption and handle, and further remove impurity.
It advanced optimizes：Activated carbon is added in processing water, after stirring, activated carbon is removed by plate filter.
The operation principle of the present invention is that：
The present invention is demulsified using acidization, and acidization demulsification is that acid is added into emulsion, due in current emulsification formula of liquid
In, majority selects anionic emulsifier, such as petroleum sodium sulfonate, sulfonated castor oil, so encountering acid will be destroyed, emulsification
Corresponding organic acid is generated, water-oil separating is made.And hydrionic introducing in acid, additionally aid the process of demulsification, due to soaps with
The H.L.B. values of its respective acids fall far short, and soaps are hydrophilic, and acids the latter is oleophylic, thus destroy original
H.L.B. balance causes to be demulsified, and is worth declining since hydrionic introducing will also result in electrokinetic potential ξ certainly, is also beneficial to be demulsified
Journey.
When handling emulsion with acidization, acid is gradually added in batches, side stirring, side acid adding, makes solution after acid adding
PH value drop to 1.5 ~ 2 after stand, until grease be layered, and detach oil, water, water layer is still muddy at this time, is used again to discharge
In limewash and PH to 6 ~ 8, Precipitation.
Spent acid of the present invention uses the waste acid water generated in lathe mill, Milling Machining, and quality hundred is mainly contained in the waste acid water
Divide the hydrochloric acid and sulfuric acid of content 10%-15%, the iron ion of 80 ~ 120g/L.Iron ion and chlorion in waste acid water are flocculating agents,
The impurity in water removal can be removed, is purified water.
It is eventually adding in limewash with after PH to 6 ~ 8, extra iron ion is precipitated in the form of ferric hydroxide precipitate in water；
Extra calcium ion is precipitated in the form of calcium sulfate precipitation.
Beneficial effects of the present invention are：
（1）Waste acid water is turned waste into wealth, is reduced useless using the waste acid water during lathe mill, Milling Machining by demulsifier of the present invention
Pollution of the directly outer row of sour water to water resource；
（2）Demulsifier of the present invention uses waste acid water, avoids the macromolecule organic emulsion breaker being added currently on the market to water quality
The secondary pollution of generation；
（3）FeCl in processing procedure of the present invention in introduced waste acid water3, the impurity in water is can remove as flocculant, is purified
Water quality；
（4）The ionic impurity Fe being added in processing procedure of the present invention3+、Ca2+、Cl-、SO4 2-, eventually with flocculant, precipitation
Form by filtering remove；
（5）The present invention treated water quality, water quality is clearly high-quality, low salinity；Processing cost is low.
Specific implementation mode
The preferred embodiment of the present invention is described in detail below so that advantages and features of the invention can be easier to by
It will be appreciated by those skilled in the art that so as to make a clearer definition of the protection scope of the present invention.
One, specific embodiment one：
Emulsion technique for treating industrial wastewater, mainly comprises the technical steps that：
（1）The emulsion industrial wastewater come will be collected to be accumulated in buffer pool, the emulsion main component is：Wherein emulsifier
Ingredient is petroleum sodium sulfonate, and mass percentage is 10% ~ 15%, and wastewater volume is 10000 L, waste water height in the buffer pool
For 1.5 ~ 2.5m；
（2）Demulsifier is added by amount under the stirring of emulsion industrial wastewater, until water-oil separating；The demulsifier is lathe mill, milling
The waste acid water generated in processing mainly contains the hydrochloric acid and sulfuric acid of mass percentage 12%, the iron of 120g/L in the waste acid water
Ion；Waste acid water volume be added is 500 ~ 800L；Waste acid water is removing impurity pretreatment using preceding by filtering；
（3）4h is stood, after grease is thoroughly layered, removes oil reservoir；Used oily-water seperating equipment is filer element type grease point
From device；
（4）Under stirring, calcium hydroxide is added, adjusts PH to 6 ~ 8；The calcium hydroxide mass percentage being added is 20%, added
The volume entered is 400L.
（5）Filtering removal precipitation, obtains processing water；Used filter device is the sheet frame pressure that pore size filter is 140 mesh
Filter.
（6）Activated carbon is added in processing water, after stirring, activated carbon is removed by plate filter.
Two, specific embodiment two：
Emulsion technique for treating industrial wastewater, mainly comprises the technical steps that:
（1）The emulsion industrial wastewater come will be collected to be accumulated in buffer pool, the emulsion main component is：Wherein emulsifier
Ingredient is OP-10, and mass percentage is 13% ~ 15%, wastewater volume 500L, and waste water height is 1.5m in the buffer pool；
（2）Demulsifier is added by amount under the stirring of emulsion industrial wastewater, until water-oil separating；The demulsifier is lathe mill, milling
The waste acid water generated in processing mainly contains the hydrochloric acid and sulfuric acid of mass percentage 15%, the iron of 80g/L in the waste acid water
Ion；Waste acid water volume be added is 300 ~ 400L；Waste acid water is removing impurity pretreatment using preceding by filtering；
（3）4h is stood, after grease is thoroughly layered, removes oil reservoir；
（4）Under stirring, calcium hydroxide is added, adjusts PH to 6 ~ 8；The calcium hydroxide mass percentage being added is 20%, added
The volume entered is 300L.
（5）Filtering removal precipitation, obtains processing water；Used filter device is the sheet frame pressure that pore size filter is 140 mesh
Filter.
（6）Activated carbon is added in processing water, after stirring, activated carbon is removed by plate filter.
Three, the comparing result of several breaking methods
The emulsion industrial wastewater come will be collected to be accumulated in buffer pool, the emulsion main component is：Wherein emulsifier at
It is divided into petroleum sodium sulfonate, mass percentage 13%.
Salting out method, coacervation, salting out method and coacervation mixing method is respectively adopted in above-mentioned emulsion, spent acid method of the present invention carries out
Processing, to dosage, treated, and water quality, sediment, oil reservoir, processing cost etc. are compared respectively, and comparing result is shown in Table 1 institute
It states：
1 salting out method of table, coacervation, salting out method and coacervation mixing method, spent acid method comparing result of the present invention
From 1 comparing result of table：
（1）Waste acid water is turned waste into wealth, is reduced useless using the waste acid water during lathe mill, Milling Machining by demulsifier of the present invention
Pollution of the directly outer row of sour water to water resource；
（2）Demulsifier of the present invention uses waste acid water, avoids the macromolecule organic emulsion breaker being added currently on the market to water quality
The secondary pollution of generation；
（3）FeCl in processing procedure of the present invention in introduced waste acid water3, the impurity in water is can remove as flocculant, is purified
Water quality；
（4）The ionic impurity Fe being added in processing procedure of the present invention3+、Ca2+、Cl-、SO4 2-, eventually with flocculant, precipitation
Form by filtering remove；
（5）The present invention treated water quality, water quality is clearly high-quality, low salinity；Processing cost is low.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, the description in above embodiments and description is only the present invention
Preference, the present invention do not limited by above-mentioned preference, without departing from the spirit and scope of the present invention, the present invention
Can also there are various changes and modifications, these changes and improvements are both fallen in the scope of protection of present invention.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. emulsion technique for treating industrial wastewater, mainly comprises the technical steps that:
The emulsion industrial wastewater come will be collected to be accumulated in buffer pool；
Demulsifier is added by amount under the stirring of emulsion industrial wastewater, until water-oil separating；
It stands, after grease is thoroughly layered, removes oil reservoir；
Under stirring, calcium hydroxide is added, adjusts PH to 6 ~ 8；
Filtering removal precipitation, obtains processing water；
It is characterized in that：The demulsifier is the waste acid water generated in lathe mill, Milling Machining, and matter is mainly contained in the waste acid water
Measure the hydrochloric acid and sulfuric acid of percentage composition 10% ~ 15%, the iron ion of 80 ~ 120g/L.
2. emulsion technique for treating industrial wastewater according to claim 1, it is characterised in that：The demulsifier uses preceding warp
Pretreatment is crossed, the solid particle polluter in demulsifier is removed.
3. emulsion technique for treating industrial wastewater according to claim 1, it is characterised in that：Step（3）In standing when
Between, time of repose related with emulsion industrial wastewater height（T --- point）With emulsion industrial wastewater height（H --- centimetre）It
Between relationship be：t ≥ h/（3~5）.
4. emulsion technique for treating industrial wastewater according to claim 1, it is characterised in that：Step（4）In hydroxide
Calcium use mass percentage for 20% ~ 50% calcium hydroxide aqueous solution.
5. emulsion technique for treating industrial wastewater according to claim 1, it is characterised in that：Step（5）Filter device
Pore size filter be no more than 140 mesh.
6. emulsion technique for treating industrial wastewater according to claim 1, it is characterised in that：Step（5）After the completion, it handles
Water can pass through activated carbon adsorption and handle, and further remove impurity.
7. emulsion technique for treating industrial wastewater according to claim 6, it is characterised in that：It handles and activity is added in water
After stirring, activated carbon is removed by plate filter for charcoal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120171.1A CN108529781A (en) | 2017-03-02 | 2017-03-02 | Emulsion technique for treating industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120171.1A CN108529781A (en) | 2017-03-02 | 2017-03-02 | Emulsion technique for treating industrial wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN108529781A true CN108529781A (en) | 2018-09-14 |
Family
ID=63489173
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710120171.1A Withdrawn CN108529781A (en) | 2017-03-02 | 2017-03-02 | Emulsion technique for treating industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003890A (en) * | 2019-12-24 | 2020-04-14 | 惠州Tcl环境科技有限公司 | Method for cooperatively treating high-concentration waste emulsion by using zinc-containing waste liquid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858654A (en) * | 1971-11-19 | 1973-08-17 | ||
| JPS5377875A (en) * | 1976-12-21 | 1978-07-10 | Kobe Steel Ltd | Treating method for waste fllid of lubricant of emulsion type for wire drawing |
| CN1410365A (en) * | 2002-09-27 | 2003-04-16 | 西北轴承股份有限公司 | Method of treating emulsion liquid waste water using industrial spent acid |
| CN103539316A (en) * | 2013-10-14 | 2014-01-29 | 褚衍洋 | Process for simultaneously processing high-concentration waste emulsion, pickling waste liquid, and waste lye |
-
2017
- 2017-03-02 CN CN201710120171.1A patent/CN108529781A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4858654A (en) * | 1971-11-19 | 1973-08-17 | ||
| JPS5377875A (en) * | 1976-12-21 | 1978-07-10 | Kobe Steel Ltd | Treating method for waste fllid of lubricant of emulsion type for wire drawing |
| CN1410365A (en) * | 2002-09-27 | 2003-04-16 | 西北轴承股份有限公司 | Method of treating emulsion liquid waste water using industrial spent acid |
| CN103539316A (en) * | 2013-10-14 | 2014-01-29 | 褚衍洋 | Process for simultaneously processing high-concentration waste emulsion, pickling waste liquid, and waste lye |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111003890A (en) * | 2019-12-24 | 2020-04-14 | 惠州Tcl环境科技有限公司 | Method for cooperatively treating high-concentration waste emulsion by using zinc-containing waste liquid |
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Application publication date: 20180914 |
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