CN102531136A - Treatment method for petroleum sulfonate surfactant wastewater - Google Patents
Treatment method for petroleum sulfonate surfactant wastewater Download PDFInfo
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- CN102531136A CN102531136A CN201210009150XA CN201210009150A CN102531136A CN 102531136 A CN102531136 A CN 102531136A CN 201210009150X A CN201210009150X A CN 201210009150XA CN 201210009150 A CN201210009150 A CN 201210009150A CN 102531136 A CN102531136 A CN 102531136A
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- wastewater
- petroleum sulfonate
- waste water
- magnesium
- sulfonate surfactant
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Abstract
The invention provides a treatment method for petroleum sulfonate surfactant wastewater. The method comprises the following steps of: (1) adjusting the pH value of the petroleum sulfonate surfactant wastewater to be 10.5 to 12.5; (2) at the temperature of 20 degrees centigrade to 25 degrees centigrade, adding a magnesium salt into the wastewater treated in the step (1) to enable the weight of magnesium elements in the added magnesium salt to be 0.05-0.3% relative to the weight of the wastewater, stirring the wastewater when adding the magnesium salt, and after stirring, depositing; and (3) filtering the wastewater with quartz sand. According to the treatment method provided by the invention, the water-soluble magnesium salt is added into the alkali petroleum sulfonate wastewater, and indissolvable magnesium hydroxide is generated by utilizing hydrolysis or deposition reaction; huge surface area generated by the magnesium hydroxide in a further reaction growth process has redundant surface free energy for carrying out three-dimensional sweeping absorption on petroleum sulfonate in the petroleum sulfonate wastewater, so that the aim of removing the petroleum sulfonate in the wastewater is achieved; the removal rate of the petroleum sulfonate can reach above 85%; and good treatment effect, high efficiency and low cost are achieved.
Description
Technical field
The present invention relates to a kind of method that is used to handle petroleum sulfonate surfactant waste water, belong to technical field of waste water processing.
Background technology
Production and Application Areas at sulfonated petro-leum all can produce the surface active agent wastewater that contains sulfonated petro-leum; Tensio-active agent in the waste water can cause water body foaming, toxigenicity; And tensio-active agent rises to steep oneself-meeting in water and reduces reoxygenation speed and the oxygenation degree in the water; Water quality is degenerated, influence hydrobiological existence, self is obstructed.In addition it can also the emulsification water body in other pollution substance, increase the concentration of pollution substance, cause indirect pollution.
The treatment process of surface active agent wastewater mainly comprises physico-chemical processes such as foam separation, coagulation, absorption, catalyzed oxidation, membrane sepn and little electrolysis, and the physico-chemical processes that adopt combine with biological method more in the practical application.Foamet is not good to COD removal effect in the waste water, and the used adsorbent reactivation of absorption method is difficulty relatively, and chemical process energy consumptions such as catalyzed oxidation, little electrolysis are high, and film is contaminated easily in the membrane sepn process.The tensio-active agent sulfonated petro-leum of anionic is the compounding substances of alkyl, arylsulphonate or benzene sulfonate, and its biological degradability is poor, is difficult for carrying out a biological disposal upon.
At present, the effective treating method report that does not still have petroleum sulfonate surfactant waste water.
Summary of the invention
The present invention is directed to the deficiency that the existing method of handling petroleum sulfonate surfactant waste water exists, the petroleum sulfonate surfactant that a kind of cost is low, treatment effect good, efficient is high wastewater treatment method is provided.
Petroleum sulfonate surfactant wastewater treatment method of the present invention may further comprise the steps:
(1) the pH value of test petroleum sulfonate surfactant waste water is 10.5-12.5 if waste water ph not in the 10.5-12.5 scope, then uses sodium hydroxide or hydrochloric acid to regulate waste water ph;
(2) under 20 ℃ of-25 ℃ of temperature; Add magnesium salts (like magnesium chloride, sal epsom and magnesium nitrate etc.) in the waste water after step (1) is handled; Making the magnesium elements weight in the magnesium salts that adds is 0.5 ‰ of waste water weight-3 ‰, when adding magnesium salts waste water is stirred, and stirring velocity is 200-400 rev/min; Stirred 1 minute-2 minutes, and stirred back sedimentation 20 minutes-40 minutes;
(3) waste water after step (2) processing is used quartz sand filtration.
Aforesaid method utilization reaction adsorption technology adds magnesium salts in the alkalitropism waste water, utilizes the throwing out of mg ion and the adsorption of the Marinco H that generated is removed waste water PetroChina Company Limited. sulphonate.The amount of free mg ion in the waste water after removal effect depends primarily on the amount of the Marinco H that mg ion combines with hydroxide radical to be generated and adds magnesium salts.The reaction times of magnesium salts and waste water directly influences the growing amount of Marinco H, therefore to removal effect also just directly influence.In the removal process, the adsorption process of Marinco H is a kind of process of energy variation, and the temperature of reaction of magnesium salts and waste water can directly influence its mechanism, thereby influences the removal effect of sulfonated petro-leum.
Add water-soluble magnesium salt in the alkalitropism sulfonated petro-leum waste water of the present invention; Utilize hydrolysis or precipitin reaction; Produce the Marinco H of indissoluble; Marinco H has the surplus surface free energy in the further reaction huge surface area that process of growth produced, and the sulfonated petro-leum in the sulfonated petro-leum waste water is carried out the three-dimensional volume sweep absorption, reaches the purpose of removing waste water PetroChina Company Limited. sulphonate.The clearance of sulfonated petro-leum can reach more than 85%, has the advantages that treatment effect is good, efficient is high, cost is low.
Embodiment
Embodiment 1
The petroleum sulfonate surfactant waste water ph is 12.0 before handling, and waste water PetroChina Company Limited. sulfonate concentration is 500mg/L.
Under 20 ℃, in waste water, add magnesium chloride, the weight of magnesium elements is 0.5 ‰ of waste water weight in the magnesium chloride, churning time was respectively 30 seconds, 60 seconds, 90 seconds and 120 seconds.Stir back sedimentation 40 minutes minutes, and use quartz sand filtration.Waste water to after handling is tested data such as following table:
Can find out that according to experimental data optimum reacting time got 60 seconds.
Embodiment 2
The petroleum sulfonate surfactant waste strength is 200mg/L before handling; The pH value of waste water is adjusted to 10.5,11.5,12.0,12.3 and 12.5 respectively; Under 22 ℃; In variant pH value waste water, add sal epsom, the magnesium elements weight in the sal epsom is 1 ‰ of waste water weight, and churning time is 60 seconds.Stir back sedimentation 30 minutes, and use quartz sand filtration.Waste water to after handling is tested data such as following table:
Can find out that according to experimental data optimal ph is 12.3.
Embodiment 3
The petroleum sulfonate surfactant waste strength is 100mg/L before handling; The pH value of waste water is adjusted to 12.3, under 20 ℃, 25 ℃, 30 ℃ and 35 ℃, in waste water, adds magnesium nitrate respectively; Magnesium elements weight in the magnesium salts that adds is 2 ‰ of waste water weight, and churning time is 60 seconds.Stir back sedimentation 20 minutes, and use quartz sand filtration.Waste water to after handling is tested data such as following table:
Can find out that according to experimental data optimum reacting time is 20 ℃.
Embodiment 4
The petroleum sulfonate surfactant waste strength is 200mg/L before handling; The pH value of waste water is adjusted to 12.3, under 20 ℃, in waste water, adds magnesiumcarbonate; Magnesium elements weight in the magnesium salts that adds is respectively 0.5 ‰, 1 ‰, 2 ‰ and 3 ‰ of waste water weight, and churning time is 60 seconds.Stir back sedimentation 35 minutes, and use quartz sand filtration.Waste water to after handling is tested data such as following table:
According to experimental data, consider the cost problem of magnesium salts, choosing best dosage is 0.5 ‰.
Claims (1)
1. a petroleum sulfonate surfactant wastewater treatment method is characterized in that, may further comprise the steps:
(1) the pH value of test petroleum sulfonate surfactant waste water is 10.5-12.5 if waste water ph not in the 10.5-12.5 scope, then uses sodium hydroxide or hydrochloric acid to regulate waste water ph;
(2) under 20 ℃ of-25 ℃ of temperature; Add magnesium salts in the waste water after step (1) is handled; Making the magnesium elements weight in the magnesium salts that adds is the 0.5%-3% of waste water weight, when adding magnesium salts waste water is stirred, and stirring velocity is 200-400 rev/min; Stirred 1 minute-2 minutes, and stirred back sedimentation 20 minutes-40 minutes;
(3) waste water after step (2) processing is used quartz sand filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210009150XA CN102531136A (en) | 2012-01-12 | 2012-01-12 | Treatment method for petroleum sulfonate surfactant wastewater |
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| CN201210009150XA CN102531136A (en) | 2012-01-12 | 2012-01-12 | Treatment method for petroleum sulfonate surfactant wastewater |
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| CN102531136A true CN102531136A (en) | 2012-07-04 |
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| CN201210009150XA Pending CN102531136A (en) | 2012-01-12 | 2012-01-12 | Treatment method for petroleum sulfonate surfactant wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763575A (en) * | 2020-06-19 | 2020-10-13 | 武汉工程大学 | Detergent composition not resistant to calcium and magnesium ions |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798149A (en) * | 2010-02-04 | 2010-08-11 | 山东大学 | Method for treating three-element composite-driven produced water |
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2012
- 2012-01-12 CN CN201210009150XA patent/CN102531136A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798149A (en) * | 2010-02-04 | 2010-08-11 | 山东大学 | Method for treating three-element composite-driven produced water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111763575A (en) * | 2020-06-19 | 2020-10-13 | 武汉工程大学 | Detergent composition not resistant to calcium and magnesium ions |
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Application publication date: 20120704 |
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