CN102126777B - Treatment method of phenol sodium salt waste water - Google Patents
Treatment method of phenol sodium salt waste water Download PDFInfo
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- CN102126777B CN102126777B CN2011100359538A CN201110035953A CN102126777B CN 102126777 B CN102126777 B CN 102126777B CN 2011100359538 A CN2011100359538 A CN 2011100359538A CN 201110035953 A CN201110035953 A CN 201110035953A CN 102126777 B CN102126777 B CN 102126777B
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- sodium sulfate
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- metabisulfite solution
- phenol
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Abstract
The invention discloses a treatment method of phenol sodium salt waste water. The treatment method is characterized by comprising the following steps: 1) adding a proper amount of 70% diluted sulfuric acid in phenol sodium salt; 2) treating a heavy salt water sodium sulfate solution, acidifying with the phenol sodium salt so as to obtain a lower-layer solution which is a sodium sulfate solution, and the sodium sulfate solution is an anhydrous sodium sulfate suspending liquid in which the content of sodium sulfate is 20%-25%, carrying out vacuum evaporation concentration on a sodium sulfate mother liquid so as to form the sodium sulfate solution in which the content of sodium sulfate is 55%-60%, and controlling the evaporation temperature to 80 DEG C-100 DEG C; and centrifuging the high-concentration sodium sulfate suspending liquid subjected to vacuum evaporation in a centrifugal machine, so as to obtain the a sodium sulfate solution containing 10% of moisture and a centrifuged mother liquid, drying and crystallizing the sodium sulfate solution containing 10% of moisture so that an anhydrous sodium sulfate finished product is prepared, and centrifuging the mother liquid for circular crystallization. By using the treatment method of the phenol sodium salt waste water, the obtained anhydrous sodium sulfate can be utilized, and simultaneously, and the heavy salt water sodium sulfate in the discharged water is removed, thereby reducing pollution.
Description
Technical field
The present invention relates to a kind of sodium phenolate method of wastewater treatment, belong to the tar processing technique field.
Background technology
Sodium phenolate is a kind of of general organic reagent, and instability is very easily oxidized.In the sub product of tar source mill, often contain sodium phenolate, there are hundreds of families in existing domestic big and small tar source mill, does not all have really to handle the ability of sodium phenolate, and its main reason is that heavy salt solution can not be handled.So according to national industrial policies, the three wastes are administered in energy-saving and emission-reduction, knot is produced only, handles this sewage and is imminent.
Heavy brinish forming process is: tar source mill product naphtalene oil adds alkaline solution, puts forward naphtalene oil the inside phenol, because of phenol is to be dissolved in the alkaline solution the inside; Naphtalene oil and alkali solution separation promptly obtain sodium phenolate, and the sodium phenolate the inside adds an amount of dilute sulphuric acid then, and sulfuric acid and alkali reaction promptly get aqueous sodium persulfate solution; Phenol floats on the metabisulfite solution; Separate to obtain crude phenols and heavy salt solution metabisulfite solution, and each tar source mill does not handle to this salt solution and directly discharge contaminated land.
Summary of the invention
Technical problem to be solved by this invention provides a kind of sodium phenolate wastewater treatment method, and the heavy salt aqueous sodium persulfate with the discharge water of removing tar source mill reduces and pollutes.
For solving the problems of the technologies described above, the present invention provides a kind of sodium phenolate method of wastewater treatment, it is characterized in that, may further comprise the steps:
1) in sodium phenolate, adding an amount of concentration is 70% dilute sulphuric acid, and reaction promptly gets aqueous sodium persulfate solution to dilute sulphuric acid with alkaline solution, and phenol floats on the metabisulfite solution, and separation obtains crude phenols and heavy salt solution metabisulfite solution;
2) heavy salt solution metabisulfite solution is handled:
Lower floor's solution by sodium phenolate acidifying gained is metabisulfite solution; Said metabisulfite solution is the SODIUM SULPHATE ANHYDROUS 99PCT suspension-s of content between 20%-25%; The sodium sulfate mother liquor is carried out vacuum-evaporation concentrate, become the metabisulfite solution that content is 55%-60%, vaporization temperature is controlled at 80 ℃-100 ℃;
High concentration sodium sulfate suspension-s after the vacuum-evaporation is again to the whizzer spinning; Obtain moisture 10% metabisulfite solution and centrifuge mother liquor, moisture 10% metabisulfite solution is processed the SODIUM SULPHATE ANHYDROUS 99PCT finished product after the oven dry crystallization, and packing is sold; Centrifuge mother liquor recycling crystallization is not wasted.
Aforesaid sodium phenolate method of wastewater treatment is characterized in that: the SODIUM SULPHATE ANHYDROUS 99PCT finished product is removed organic impurity again through dissolving through ionic membrane, and the double evaporation-cooling crystallization obtains the sodium sulfate in high purity more than 99%, can improve added value of product, increases benefit.
The beneficial effect that the present invention reached: sodium phenolate method of wastewater treatment of the present invention; Through the vacuum-evaporation of heavy salt solution metabisulfite solution is concentrated, again to the whizzer spinning; Extract SODIUM SULPHATE ANHYDROUS 99PCT; The gained SODIUM SULPHATE ANHYDROUS 99PCT can utilize, and simultaneously the heavy salt aqueous sodium persulfate of discharge water is removed, and reduces and pollutes.
Description of drawings
Fig. 1 is the schema of sodium phenolate method of wastewater treatment of the present invention.
Embodiment
Sodium phenolate method of wastewater treatment of the present invention may further comprise the steps:
1) adding concentration 1 li of first solution pool that sodium phenolate is housed is 70% dilute sulphuric acid, and reaction promptly gets aqueous sodium persulfate solution to dilute sulphuric acid with alkaline solution, and phenol floats on the metabisulfite solution, and separation obtains crude phenols and heavy salt solution metabisulfite solution;
2) heavy salt solution metabisulfite solution is handled:
Lower floor's solution by sodium phenolate acidifying gained is metabisulfite solution; Said metabisulfite solution is the SODIUM SULPHATE ANHYDROUS 99PCT suspension-s of content between 20%-25%; Carrying out vacuum-evaporation in the sodium sulfate mother liquor entering evaporation tank 2 concentrates; Become the metabisulfite solution that content is 55%-60%, vaporization temperature is controlled at 80 ℃-100 ℃;
High concentration sodium sulfate suspension-s after the vacuum-evaporation carries out spinning to whizzer 3 again; Obtain moisture 10% metabisulfite solution and centrifuge mother liquor; Moisture 10% metabisulfite solution is processed the SODIUM SULPHATE ANHYDROUS 99PCT finished product after entering into the 4 oven dry crystallizations of first crystallization kettle again; Packing is sold, and centrifuge mother liquor recycling crystallization is not wasted.
As further improvement of the present invention; The SODIUM SULPHATE ANHYDROUS 99PCT finished product can be put into second solution pool 5 again and dissolve, and removes organic impurity through ionic membrane 6, gets into the 7 double evaporation-cooling crystallizations of second crystallization kettle again and obtains the sodium sulfate in high purity more than 99%; Can improve added value of product, increase benefit.
Claims (2)
1. a sodium phenolate method of wastewater treatment is characterized in that, may further comprise the steps:
1) in sodium phenolate, adding an amount of concentration is 70% dilute sulphuric acid, and reaction promptly gets aqueous sodium persulfate solution to dilute sulphuric acid with alkaline solution, and phenol floats on the metabisulfite solution, and separation obtains crude phenols and heavy salt solution metabisulfite solution;
2) heavy salt solution metabisulfite solution is handled:
Lower floor's solution by sodium phenolate acidifying gained is metabisulfite solution; Said metabisulfite solution is the SODIUM SULPHATE ANHYDROUS 99PCT suspension-s of content between 20%-25%; The sodium sulfate mother liquor is carried out vacuum-evaporation concentrate, become the metabisulfite solution that content is 55%-60%, vaporization temperature is controlled at 80 ℃-100 ℃;
High concentration sodium sulfate suspension-s after the vacuum-evaporation obtains moisture 10% metabisulfite solution and centrifuge mother liquor again to the whizzer spinning, and moisture 10% metabisulfite solution is processed the SODIUM SULPHATE ANHYDROUS 99PCT finished product, centrifuge mother liquor recycling crystallization after the oven dry crystallization.
2. sodium phenolate method of wastewater treatment according to claim 1 is characterized in that: the SODIUM SULPHATE ANHYDROUS 99PCT finished product is removed organic impurity again through dissolving through ionic membrane, and the double evaporation-cooling crystallization obtains the sodium sulfate in high purity more than 99%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100359538A CN102126777B (en) | 2011-02-11 | 2011-02-11 | Treatment method of phenol sodium salt waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100359538A CN102126777B (en) | 2011-02-11 | 2011-02-11 | Treatment method of phenol sodium salt waste water |
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| CN102126777A CN102126777A (en) | 2011-07-20 |
| CN102126777B true CN102126777B (en) | 2012-03-21 |
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| CN2011100359538A Expired - Fee Related CN102126777B (en) | 2011-02-11 | 2011-02-11 | Treatment method of phenol sodium salt waste water |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2988088B1 (en) * | 2012-03-16 | 2014-11-07 | Rhodia Operations | PROCESS FOR TREATING EFFLUENTS OF PRODUCTION OF AROMATIC COMPOUND DERIVED FROM BENZENE DIHYDROXYL |
| CN103524384B (en) * | 2013-10-21 | 2016-04-20 | 金能科技股份有限公司 | In a kind of sulfonate solution, inorganic salt sodium sulfate carries salt processing method |
| CN104386870B (en) * | 2014-11-26 | 2016-06-01 | 深圳能源资源综合开发有限公司 | Coal Chemical Industry height strong brine evaporative crystallization resource recovery process and dedicated system |
| CN104876379B (en) * | 2015-05-07 | 2017-03-08 | 中石化上海工程有限公司 | The method of cumyl peroxide DCP device wastewater treatment |
| CN105176557B (en) * | 2015-08-21 | 2017-08-08 | 长岭炼化岳阳工程设计有限公司 | The device and method of phenol is reclaimed in coal tar desalination |
| CN107265731A (en) * | 2017-07-03 | 2017-10-20 | 湖北三里枫香科技有限公司 | A kind of recovery and treatment method containing sodium phenolate waste water |
| CN110128245A (en) * | 2019-06-12 | 2019-08-16 | 曹健 | A method of crude phenols are produced using hydrogen chloride gas |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113790A (en) * | 1998-12-18 | 2000-09-05 | Basf Corporation | Process for removing water-soluble organics from waste streams |
| CN1371871A (en) * | 2001-11-26 | 2002-10-02 | 鞍山市凯特环保工程技术有限公司 | Phenolic resin sewage treatment method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2667307B1 (en) * | 1990-10-02 | 1992-10-30 | Philippe Pichat | PRETREATMENT OF WASTE AND RESIDUES CONTAINING SODIUM AND POTASSIUM IONS. |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6113790A (en) * | 1998-12-18 | 2000-09-05 | Basf Corporation | Process for removing water-soluble organics from waste streams |
| CN1371871A (en) * | 2001-11-26 | 2002-10-02 | 鞍山市凯特环保工程技术有限公司 | Phenolic resin sewage treatment method |
Non-Patent Citations (1)
| Title |
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| JP特开平4265195A 1992.09.21 |
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Granted publication date: 20120321 Termination date: 20180211 |