CN109293165A - A kind of processing method of high COD high salinity waste water - Google Patents
A kind of processing method of high COD high salinity waste water Download PDFInfo
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- CN109293165A CN109293165A CN201811335031.7A CN201811335031A CN109293165A CN 109293165 A CN109293165 A CN 109293165A CN 201811335031 A CN201811335031 A CN 201811335031A CN 109293165 A CN109293165 A CN 109293165A
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- waste water
- salt
- processing method
- methanol
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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
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- 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
-
- 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
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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)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of processing methods of high COD high salinity waste water, the specific steps are as follows: methanol is added in acid waste water and is stirred at low speed, obtains the first mixture by step 1；Alkaline waste water is added in the first mixture step 2, until pH value is adjusted to 7-8, is then filtered, obtains solid waste and filtered fluid；Filtered fluid is carried out rectifying, obtains raffinate by step 3；Raffinate is sent into biochemistry treatment system and is handled by step 4.The present invention mixes methanol with acid waste water, it is mixed again with alkaline waste water, then by filtering, rectifying, light electrolysis and biochemical treatment, obtained solid waste is ordinary solid salt, the salt-mixture of sad filter can not only be efficiently separated, can also reduce waste water because salt it is excessively high caused by dilute the big problem of water, substantially improve environmental protection treatment the risk and cost.
Description
Technical field
The present invention relates to field of waste water treatment, the processing method of specifically a kind of high COD high salinity waste water.
Background technique
Waste water refers to the general name of the water being discharged in resident's active procedure and runoff rainwater.It includes sanitary sewage, Industry Waste
It is the important component of waste water that water and first rain diameter, which flow into other useless water, the industrial wastewaters such as sewer,.
There are many kind, production benzotriazole ultraviolet absorbents can also generate waste water, benzo three for the type of industrial wastewater
The common waste water of nitrogen azoles ultraviolet absorbing agent has the acid waste water of with high salt and high sulfuric acid, alkaline waste water with high salt and high alkalinity.It is high
The mass fraction of salt is 11% sodium sulphate and 1.5% sodium chloride in the acid waste water of salt and high sulfuric acid, and the mass fraction of sulfuric acid is
16%-18%, COD concentration are 4500mg/L, and the processing method of the acid water is that high temperature is concentrated into after the mass fraction of sulfuric acid is 60%
Decoloration cooling is precipitated a large amount of salt, then sour water is applied between carriage return in reaction, and energy consumption is big.
Sodium metaaluminate, 15% sodium gluconate, 2% hydrogen-oxygen of the mass fraction of salt for 7% in high salt and high alkalinity alkaline waste water
Change sodium and 40% methanol, there are also other salts that mass fraction is 1%, COD concentration is 600000mg/L, the processing side of the alkaline water
Method is that active charcoal adsorbs (COD is 160000mg/L or so at this time) use recycling sulfuric acid tune pH after a small amount of tar after rectifying goes out methanol
Aluminium hydroxide will be largely precipitated in value 7-8, take out the colloidal solids of aluminium hydroxide after being diluted with water by sedimentation and multistage filtering
Waste, the COD of water is 50000mg/L by COD concentration after dilution and colloid sedimentation at this time, and a part of sodium sulphate is precipitated after cooling
Biochemical treatment system is mixed into workshop washing water and domestic water again after light electrolysis.The problem of this processing method, is hydrogen
Alumina gel filtering is slower, and contains a certain amount of complicated organic matter in the solid waste filtered out because of colloid relationship, makes
Obtaining solid waste can only be handled as hazardous solid waste, not only make to handle the increase of solid waste expense, and filtering in this way
Investment and maintenance cost are very big.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of high COD high salinity waste water, to solve above-mentioned background technique
The problem of middle proposition.
To achieve the above object, the invention provides the following technical scheme:
A kind of processing method of high COD high salinity waste water, the specific steps are as follows:
Methanol is added in acid waste water and is stirred at low speed, obtains the first mixture by step 1；
Alkaline waste water is added in the first mixture step 2, until pH value is adjusted to 7-8, aluminium hydroxide can not be formed at this time
Colloid, and in the presence of methanol, solubility of the salt in system in system is very low, salt about 95% quilt
It is precipitated, is then filtered by force, at this moment still solubility is non-in alcohol-water system for the organic matters such as sodium gluconate in system
Normal is big, this causes salt and organic matter to be efficiently separated, and obtains solid waste and filtered fluid；
Filtered fluid is carried out rectifying by step 3, and methanol can be gone out with rectifying, and methanol can obtain raffinate with recycling and reusing；
Raffinate is sent into biochemistry treatment system and is handled by step 4.
As a further solution of the present invention: the weight ratio of methanol and acid waste water is 1:1 in step 1.
As a further solution of the present invention: the temperature that the first mixture is added in step 2 neutral and alkali waste water is taken the photograph not higher than 20
Family name's degree.
As a further solution of the present invention: rectifying carries out in rectifying column in step 3.
As a further solution of the present invention: raffinate carries out at light electrolysis before being sent into biochemistry treatment system in step 4
Reason.
As a further solution of the present invention: the revolving speed stirred at low speed in step 1 is 45-90rpm.
As a further solution of the present invention: the time of rectifying is 8-12 hours in step 3.
Compared with prior art, the beneficial effects of the present invention are: the present invention mixes methanol with acid waste water, then with alkalinity
Waste water mixing, then by filtering, rectifying, light electrolysis and biochemical treatment, obtained solid waste is ordinary solid salt, without any
Dangerous or toxic organic matter can directly be taken out to the producer of recycling aluminium salt.The mixing of sad filter can not only be efficiently separated
Salt, can also reduce waste water because salt it is excessively high caused by dilute the big problem of water, substantially improve environmental protection treatment risk and at
This, suitable for more than COD high, salinity type and organic salt accounts for a certain proportion of sewage treatment, with positive social benefit.
Detailed description of the invention
Fig. 1 is the flow chart of the processing method of high COD high salinity waste water.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
Embodiment 1
A kind of processing method of high COD high salinity waste water, the specific steps are as follows:
Methanol is added in acid waste water and is stirred evenly with the revolving speed of 60rpm, the weight of methanol and acid waste water by step 1
Than obtaining the first mixture for 1:1；
Alkaline waste water is added in the first mixture step 2, until pH value is adjusted to 7.6, aluminium hydroxide can not be formed at this time
Colloid, and in the presence of methanol, solubility of the salt in system in system is very low, salt about 95% quilt
It is precipitated, is then filtered by force, at this moment still solubility is non-in alcohol-water system for the organic matters such as sodium gluconate in system
Normal is big, this causes salt and organic matter to be efficiently separated, and obtains solid waste and filtered fluid, and solid waste is washed with methanol
After dry, obtain clean salt-mixture, the salt-mixture is ordinary solid salt after tested, without any dangerous or toxic organic matter,
It can directly take out to the producer of recycling aluminium salt；
Filtered fluid is carried out rectifying by step 3, and methanol can be gone out with rectifying, and methanol can obtain raffinate with recycling and reusing；
Raffinate is carried out microelectrolysis processing by step 4, is then fed into biochemistry treatment system and is handled.
Embodiment 2
A kind of processing method of high COD high salinity waste water, the specific steps are as follows:
Methanol is added in acid waste water and is stirred at low speed, obtains the first mixture by step 1；
Alkaline waste water is added in 16 degrees Celsius of the first mixture step 2, until pH value is adjusted to 7.4, hydroxide at this time
Aluminium can not form colloid, and in the presence of methanol, and solubility of the salt in system in system is very low, and salt is big
There are about 95% to be precipitated by force, is then filtered, at this moment the organic matters such as sodium gluconate in system in alcohol-water system still
Solubility is very big, this causes salt and organic matter to be efficiently separated, and obtains solid waste and filtered fluid；
Step 3 carries out filtered fluid rectifying 9 hours in rectifying column, can go out methanol with rectifying, methanol can with recycling and reusing,
Obtain raffinate；
Raffinate is sent into biochemistry treatment system and is handled by step 4.
Embodiment 3
A kind of processing method of high COD high salinity waste water, the specific steps are as follows:
Methanol is added in acid waste water and is stirred evenly with the revolving speed of 84rpm, the weight of methanol and acid waste water by step 1
Than obtaining the first mixture for 1:1；
Alkaline waste water is added in 19 degrees Celsius of the first mixture step 2, until pH value is adjusted to 7.7, hydroxide at this time
Aluminium can not form colloid, and in the presence of methanol, and solubility of the salt in system in system is very low, and salt is big
There are about 95% to be precipitated by force, is then filtered, at this moment the organic matters such as sodium gluconate in system in alcohol-water system still
Solubility is very big, this causes salt and organic matter to be efficiently separated, and obtains solid waste and filtered fluid；
Step 3 carries out filtered fluid rectifying 11 hours in rectifying column, and methanol can be gone out with rectifying, and methanol can recycle again sharp
With obtaining raffinate；
Raffinate is carried out microelectrolysis processing by step 4, is then fed into biochemistry treatment system and is handled.
Comparative example:
It is handled using the method for existing processing alkaline waste water.
The method of the method for embodiment 1-3 and comparative example handles alkaline waste water, to obtained solid waste into
Row detection, the solid waste that the method for embodiment 1-3 obtains are ordinary solid salt, can without any dangerous or toxic organic matter
Directly to take out to the producer of recycling aluminium salt, processing cost is few, and methanol used in embodiment 1-3 can recycle, comparison
Containing a certain amount of complicated organic matter in the solid waste that the method for example obtains, can only be handled as hazardous solid waste, handling
With big.
The working principle of the invention is: processing waste water mode of the invention can not only efficiently separate the mixing of sad filter
Salt, can also reduce waste water because salt it is excessively high caused by dilute the big problem of water.This innovative sewage treatment process is non-
Often it is suitble to some COD high, but salinity type is more, and organic salt accounts in a certain proportion of sewage production.It uses in this process
The mode of rectifying methanol instead of triple effect evaporation or mechanical steam recompression technology (MVR), both do so due to methanol and
The difference of the heat enthalpy value of water, so difference is little in the dosage of steam in distillation.But due to salt in this method and organic
Impurity is efficiently separated, and no matter quantity or property all occur significantly to change the solid waste made.It is common to steam
Hazardous solid waste can be obtained by evaporating, and this distillating method is easy to make organic impurities that the reaction such as polymerization occur at high temperature and generate
A large amount of tarry impurity out.
The salt about 95% of contrast test discovery in the present invention system is precipitated by force.Then it filters, at this moment in system
The organic matters such as sodium gluconate still solubility is very big in alcohol-water system, this causes salt and organic matter to carry out effectively
Separation.It is dried after being washed after salt filtering with methanol, obtains clean salt-mixture.The salt is ordinary solid salt after tested, without any
Dangerous or toxic organic matter can directly be taken out to the producer of recycling aluminium salt.Filtered organic liquid portion enters rectifying
Tower rectifying goes out methanol, due to having no too many salt in raffinate, can without dilute after direct light electrolysis and life and washing water into
Enter in biochemical system.And the methanol recycled is applied in reaction and next group wastewater treatment.
What the present invention obtained is common recyclable solid waste, extra organics impurity in rectifying due to temperature is not high very
Few side reaction, so subsequent treatment cost is also completely different.So this high COD of processing that the present invention is innovative, and salt
It is more complex, organic salt compared with sewage when, while the amount that solid waste can be effectively reduced, but also hazardous solid waste is several
It does not generate, environmental protection treatment the risk and cost must be improved significantly in this way.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of processing method of high COD high salinity waste water, which is characterized in that specific step is as follows:
Methanol is added in acid waste water and is stirred at low speed, obtains the first mixture by step 1；
Alkaline waste water is added in the first mixture step 2, until pH value is adjusted to 7-8, is then filtered, obtains solid
Waste and filtered fluid；
Filtered fluid is carried out rectifying, obtains raffinate by step 3；
Raffinate is sent into biochemistry treatment system and is handled by step 4.
2. the processing method of high COD high salinity waste water according to claim 1, which is characterized in that first in the step 1
The weight ratio of pure and mild acid waste water is 1:1.
3. the processing method of high COD high salinity waste water according to claim 1, which is characterized in that alkali in the step 2
Property waste water be added the first mixture temperature be not higher than 20 degrees Celsius.
4. the processing method of high COD high salinity waste water according to claim 1, which is characterized in that smart in the step 3
It evaporates and is carried out in rectifying column.
5. the processing method of high COD high salinity waste water according to claim 1, which is characterized in that residual in the step 4
Liquid carries out microelectrolysis processing before being sent into biochemistry treatment system.
6. the processing method of high COD high salinity waste water according to claim 1 or 2, which is characterized in that in the step 1
The revolving speed stirred at low speed is 45-90rpm.
7. the processing method of high COD high salinity waste water according to claim 1 or 4, which is characterized in that in the step 3
The time of rectifying is 8-12 hours.
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| CN201811335031.7A CN109293165A (en) | 2018-11-10 | 2018-11-10 | A kind of processing method of high COD high salinity waste water |
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| CN201811335031.7A CN109293165A (en) | 2018-11-10 | 2018-11-10 | A kind of processing method of high COD high salinity waste water |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834039A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Treatment and reclaimation method of coal gasification wastewater contg. phenol |
| CN101186404A (en) * | 2007-11-28 | 2008-05-28 | 吴江市方霞企业信息咨询有限公司 | Method for treating pulp sewage |
| CN104961304A (en) * | 2015-07-15 | 2015-10-07 | 大连世达特环保科技有限公司 | High-concentration fluorine chemical wastewater treatment technology |
| CN105668678A (en) * | 2016-03-31 | 2016-06-15 | 陕西煤业化工集团神木天元化工有限公司 | Wastewater pretreatment system, wastewater treatment system and wastewater treatment method |
| CN105836977A (en) * | 2016-06-08 | 2016-08-10 | 浙江奇彩环境科技股份有限公司 | Treatment method of benzene-series waste water |
| CN105967415A (en) * | 2016-04-26 | 2016-09-28 | 天津理工大学 | 2-naphthol high-salt and high-concentration organic matter wastewater recycling process and system |
| CN107055927A (en) * | 2016-10-25 | 2017-08-18 | 天津市联合环保工程设计有限公司 | A kind of high saliferous difficult degradation saccharin industrial wastewater waste gas processing method and device |
| CN108083365A (en) * | 2017-12-28 | 2018-05-29 | 浙江新安化工集团股份有限公司 | A kind of processing method of carbendazim wastewater |
| CN109607915A (en) * | 2018-12-12 | 2019-04-12 | 江苏湖大化工科技有限公司 | A kind of processing method of Benzotriazole Ultraviolet Stabilizer production waste water |
-
2018
- 2018-11-10 CN CN201811335031.7A patent/CN109293165A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834039A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Treatment and reclaimation method of coal gasification wastewater contg. phenol |
| CN101186404A (en) * | 2007-11-28 | 2008-05-28 | 吴江市方霞企业信息咨询有限公司 | Method for treating pulp sewage |
| CN104961304A (en) * | 2015-07-15 | 2015-10-07 | 大连世达特环保科技有限公司 | High-concentration fluorine chemical wastewater treatment technology |
| CN105668678A (en) * | 2016-03-31 | 2016-06-15 | 陕西煤业化工集团神木天元化工有限公司 | Wastewater pretreatment system, wastewater treatment system and wastewater treatment method |
| CN105967415A (en) * | 2016-04-26 | 2016-09-28 | 天津理工大学 | 2-naphthol high-salt and high-concentration organic matter wastewater recycling process and system |
| CN105836977A (en) * | 2016-06-08 | 2016-08-10 | 浙江奇彩环境科技股份有限公司 | Treatment method of benzene-series waste water |
| CN107055927A (en) * | 2016-10-25 | 2017-08-18 | 天津市联合环保工程设计有限公司 | A kind of high saliferous difficult degradation saccharin industrial wastewater waste gas processing method and device |
| CN108083365A (en) * | 2017-12-28 | 2018-05-29 | 浙江新安化工集团股份有限公司 | A kind of processing method of carbendazim wastewater |
| CN109607915A (en) * | 2018-12-12 | 2019-04-12 | 江苏湖大化工科技有限公司 | A kind of processing method of Benzotriazole Ultraviolet Stabilizer production waste water |
Non-Patent Citations (2)
| Title |
|---|
| 李海燕: "高浓度有机酸性工业废水处理站设计", 《工业水处理》 * |
| 钱宇: "煤气化高浓酚氨废水处理技术研究进展", 《化工进展》 * |
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Application publication date: 20190201 |