CN102126777A - Treatment method of phenol sodium salt waste water - Google Patents
Treatment method of phenol sodium salt waste water Download PDFInfo
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- CN102126777A CN102126777A CN 201110035953 CN201110035953A CN102126777A CN 102126777 A CN102126777 A CN 102126777A CN 201110035953 CN201110035953 CN 201110035953 CN 201110035953 A CN201110035953 A CN 201110035953A CN 102126777 A CN102126777 A CN 102126777A
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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.Often contain sodium phenolate in the byproduct of tar source mill, 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, naphtalene oil the inside phenol is put forward, 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 discharging, 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 invention provides a kind of sodium phenolate method of wastewater treatment, it is characterized in that, may further comprise the steps:
1) adding an amount of concentration in sodium phenolate is 70% dilute sulphuric acid, and dilute sulphuric acid and alkaline solution reaction promptly get aqueous sodium persulfate 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, described metabisulfite solution is the anhydrous sodium sulphate suspension 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 after the vacuum-evaporation is again to the whizzer centrifugation, obtain moisture 10% metabisulfite solution and centrifuge mother liquor, make the anhydrous sodium sulphate finished product after moisture 10% the metabisulfite solution drying crystallization, packing is sold, centrifuge mother liquor recirculation crystallization is not wasted.
Aforesaid sodium phenolate method of wastewater treatment is characterized in that: the anhydrous sodium sulphate finished product is removed organic impurity again through dissolving by 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, by the vacuum-evaporation of heavy salt solution metabisulfite solution is concentrated, again to the whizzer centrifugation, extract anhydrous sodium sulphate, the gained anhydrous sodium sulphate can be utilized, simultaneously the heavy salt aqueous sodium persulfate of discharge water is removed, reduced and pollute.
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 dilute sulphuric acid and alkaline solution reaction promptly get aqueous sodium persulfate 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, described metabisulfite solution is the anhydrous sodium sulphate suspension of content between 20%-25%, the sodium sulfate mother liquor enters and carries out vacuum-evaporation in the evaporation tank 2 and concentrate, become the metabisulfite solution that content is 55%-60%, vaporization temperature is controlled at 80 ℃-100 ℃;
High concentration sodium sulfate suspension after the vacuum-evaporation carries out centrifugation to whizzer 3 again, obtain moisture 10% metabisulfite solution and centrifuge mother liquor, moisture 10% metabisulfite solution is made the anhydrous sodium sulphate finished product after entering into the 4 oven dry crystallizations of first crystallization kettle again, packing is sold, centrifuge mother liquor recirculation crystallization is not wasted.
As a further improvement on the present invention, the anhydrous sodium sulphate finished product can be put into second solution pool 5 again and dissolve, and removes organic impuritys by ionic membrane 6, enters the 7 double evaporation-cooling crystallizations of second crystallization kettle again and obtains 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) adding an amount of concentration in sodium phenolate is 70% dilute sulphuric acid, and dilute sulphuric acid and alkaline solution reaction promptly get aqueous sodium persulfate 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, described metabisulfite solution is the anhydrous sodium sulphate suspension 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 after the vacuum-evaporation obtains moisture 10% metabisulfite solution and centrifuge mother liquor again to the whizzer centrifugation, makes the anhydrous sodium sulphate finished product after moisture 10% the metabisulfite solution drying crystallization, centrifuge mother liquor recirculation crystallization.
2. sodium phenolate method of wastewater treatment according to claim 1 is characterized in that: the anhydrous sodium sulphate finished product is removed organic impurity again through dissolving by ionic membrane, and the double evaporation-cooling crystallization obtains the sodium sulfate in high purity more than 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN2011100359538A CN102126777B (en) | 2011-02-11 | 2011-02-11 | Treatment method of phenol sodium salt waste water |
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| CN102126777A true CN102126777A (en) | 2011-07-20 |
| CN102126777B 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013135885A1 (en) * | 2012-03-16 | 2013-09-19 | Rhodia Operations | Method for treating production effluents of an aromatic compound derived from dihydroxybenzene |
| CN103524384A (en) * | 2013-10-21 | 2014-01-22 | 金能科技股份有限公司 | Salt-extracting treatment method of inorganic salt sodium sulfate in sulfonate liquor |
| CN104386870A (en) * | 2014-11-26 | 2015-03-04 | 深圳能源资源综合开发有限公司 | Coal chemical high concentrated brine evaporation crystallization recycling process and dedicated system |
| CN104876379A (en) * | 2015-05-07 | 2015-09-02 | 中石化上海工程有限公司 | Method for treating wastewater by dicumyl peroxide DCP device |
| CN105176557A (en) * | 2015-08-21 | 2015-12-23 | 长岭炼化岳阳工程设计有限公司 | Device and method for desalting coal tar and recovering phenol |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04265195A (en) * | 1990-10-02 | 1992-09-21 | Philippe Pichat | Method for treating waste and residue containing sodium ion and potassium ion |
| 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 |
-
2011
- 2011-02-11 CN CN2011100359538A patent/CN102126777B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04265195A (en) * | 1990-10-02 | 1992-09-21 | Philippe Pichat | Method for treating waste and residue containing sodium ion and potassium ion |
| 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 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013135885A1 (en) * | 2012-03-16 | 2013-09-19 | Rhodia Operations | Method for treating production effluents of an aromatic compound derived from dihydroxybenzene |
| FR2988088A1 (en) * | 2012-03-16 | 2013-09-20 | Rhodia Operations | PROCESS FOR TREATING EFFLUENTS OF PRODUCTION OF AROMATIC COMPOUND DERIVED FROM BENZENE DIHYDROXYL |
| CN104254497A (en) * | 2012-03-16 | 2014-12-31 | 罗地亚运作公司 | Method for treating production effluents of an aromatic compound derived from dihydroxybenzene |
| CN104254497B (en) * | 2012-03-16 | 2017-07-14 | 罗地亚运作公司 | The method for handling the effluent from aromatic compound of the production derived from dihydroxy benzenes |
| US10501354B2 (en) | 2012-03-16 | 2019-12-10 | Rhodia Operations | Process for treating effluents from the production of an aromatic compound derived from a dihydroxylated benzene |
| CN103524384A (en) * | 2013-10-21 | 2014-01-22 | 金能科技股份有限公司 | Salt-extracting treatment method of inorganic salt sodium sulfate in sulfonate liquor |
| 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 |
| CN104386870A (en) * | 2014-11-26 | 2015-03-04 | 深圳能源资源综合开发有限公司 | Coal chemical high concentrated brine evaporation crystallization recycling process and dedicated system |
| CN104876379A (en) * | 2015-05-07 | 2015-09-02 | 中石化上海工程有限公司 | Method for treating wastewater by dicumyl peroxide DCP device |
| CN105176557A (en) * | 2015-08-21 | 2015-12-23 | 长岭炼化岳阳工程设计有限公司 | Device and method for desalting coal tar and recovering phenol |
| 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 |
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| CN102126777B (en) | 2012-03-21 |
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