CN110054342A - A method of product salt is obtained to high organic wastewater processing with high salt - Google Patents
A method of product salt is obtained to high organic wastewater processing with high salt Download PDFInfo
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- CN110054342A CN110054342A CN201910460063.8A CN201910460063A CN110054342A CN 110054342 A CN110054342 A CN 110054342A CN 201910460063 A CN201910460063 A CN 201910460063A CN 110054342 A CN110054342 A CN 110054342A
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
A method of product salt is obtained to high organic wastewater processing with high salt, high organic wastewater with high salt first passes through sedimentation basin, using conditioning tank, acid or lye is added, the pH value in adjusting water to 7~9, then pass through rectifying and pre-process, evaporate low-boiling organic matter, by the low-boiling-point organic compound evaporation in waste water, obtained low-boiling-point organic compound concentration is between 50%~99%, and the rate of recovery is between 60~99.9%.The waste water for evaporating low-boiling-point organic compound enters back into evaporation and concentration.When the concentrate COD that evaporation obtains is between 100,000 to 600,000, concentrate enters waste water incineration, the organic matter in water is transformed into carbon dioxide and water, the salt after waste water incineration is able to satisfy industrial requirements.Heat is recycled by waste-heat recovery device simultaneously, can be used for the pretreated heat consumption of rectifying.
Description
Technical field
It is the present invention relates to technical field of waste water processing, in particular to a kind of that salt production is obtained to high organic wastewater processing with high salt
The method of product.
Background technique
High organic wastewater with high salt is a kind of common difficult waste water, refers generally to total saliferous mass fraction at least 1%
Waste water.High organic content and complicated component, CODCr(COD) concentration also contains generally in 10000mg/L or more
There are a large amount of organic pollutants difficult to degrade.Due to salt content height, high salinity is difficult to the inhibiting effect of microorganism, direct bioanalysis
Reach expected treatment effect.In addition simultaneously containing the organic of high-content, and the boiling point of some of them organic matter is lower than water, and has
The boiling point of a little organic matters is higher than water, is allowed to more be very difficult to be effectively treated.High-salt wastewater refers to once can be to week into environment
The ecosystem on side causes greatly to destroy.Therefore the processing of high salinity wastewater from chemical industry difficult to degrade is at current sewage both at home and abroad
Manage the generally acknowledged problem in boundary.
Summary of the invention
To overcome problems of the prior art, the present invention provides one kind to obtain high organic wastewater processing with high salt
The method of product salt.
The technical scheme adopted by the invention to solve the technical problem is that: this kind obtains high organic wastewater processing with high salt
The method of product salt, high organic wastewater with high salt successively pass through sedimentation basin, adjust tank, rectifying pretreatment, be concentrated by evaporation, waste water burns
Burning processing, obtains the salt for meeting industrial requirements.
Further, comprising the following steps:
1) high organic wastewater with high salt first passes through sedimentation basin, and by static layering, upper layer liquid separation and bottom sediment are returned
It receives or reuse, intermediate host water phase enters adjusting tank；
2) liquid alkaline is added when water is in acidity in the pH value that water is adjusted in adjusting tank；When water is in alkalinity, acid solution is added；
The final pH value for adjusting water is between 7~9；Water after adjusting enters raw water tank；
3) water of raw water tank is entered in preheater by feed pump, after evaporation condensate heat exchange, is pre-processed into rectifying
In the rectifying column of system；
4) in rectifying column, for materials at bottom of tower through circulating pump, a part enters evaporation concentration system, and rest part enters to boil again
In device, at the top of rectifying column, low-boiling-point organic compound is left with gas phase, and is condensed in condenser 9, a part
Return rectifying column in, it is a part of then as product recycling；
5) when being concentrated by evaporation obtained concentrate COD between 100,000 to 600,000, concentrate enters waste water incineration device；
Obtain the salt for meeting industrial requirements.
Further, in step 4), the control temperature of rectifying column has the low boiling point in water between 50 DEG C~150 DEG C
Machine object is evaporated, and obtained low-boiling-point organic compound concentration is between 50%~99%, and the rate of recovery is between 60%~99.9%.
Further, in step 4), evaporation process uses function of mechanical steam recompression evaporation technology, in the heater, waste water
By compressed Secondary-steam heating, entering in separator by circulating pump, water leaves separator in the form of secondary steam, then
It is compressed by vapour compression machine, then enters back into heat source of the heating room as evaporation, while secondary steam is also condensed, into
Enter condensate water pot, enter back into preheater for heat charging.
Further, for the evaporating temperature of function of mechanical steam recompression between 50 DEG C~100 DEG C, roots-type is can be used in compressor
Compressor or centrifugal compressor make the saturation temperature of secondary steam improve 5 DEG C~22 DEG C.
Further, in waste water incineration, for temperature at 800 DEG C~1500 DEG C, water is changed into gas phase, and the organic matter in water is logical
It crosses burning and is transformed into carbon dioxide and water vapour, the salt for meeting industrial requirements is obtained after burning.
Further, in step 5), the gas for burning generation first passes through waste-heat recovery device, gas temperature by 800 DEG C~
1500 DEG C are down between 100 DEG C~200 DEG C, and recycle the heat in byproduct steam, and steam after the recovery can be used for prevapourising
Heat supplement.
Further, after the gas after waste heat recycling cooling is using exhaust gas processing device, qualified discharge.
To sum up, the advantageous effects of the above technical solutions of the present invention are as follows:
High organic wastewater with high salt first passes through sedimentation basin, and using conditioning tank, acid or lye is added, adjusts the pH value in water
It is pre-processed to 7~9, then by rectifying, evaporates low-boiling organic matter, the low-boiling-point organic compound in waste water is evaporated, is obtained
Low-boiling-point organic compound concentration between 50%~99%, the rate of recovery is between 60~99.9%.Evaporate low-boiling-point organic compound
Waste water enter back into evaporation and concentration.When the concentrate COD that evaporation obtains is between 100,000 to 600,000, concentrate enters waste water and burns
It burns, the organic matter in water is transformed into carbon dioxide and water, the salt after waste water incineration is able to satisfy industrial requirements.Simultaneously by remaining
Heat recovery apparatus recycles heat, can be used for the pretreated heat consumption of rectifying.
It is more demanding suitable for the condensate liquid prevapourising, evaporated or the water not evaporated and dense evaporating
In contracting, it can not achieve effective evaporative crystallization and go out salt.
This technique can efficiently remove the organic components in waste water, and by being concentrated by evaporation according to the boiling point of organic matter,
The water steamed obtains reuse, realizes the zero-emission of waste water, while Organic substance in water being enriched with, is allowed to be more advantageous to waste water incineration.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Feature and principle of the invention are described in detail below in conjunction with attached drawing, illustrated embodiment is only used for explaining this hair
It is bright, not limited the scope of protection of the present invention with this.
As shown in Figure 1, a kind of method for obtaining product salt to high organic wastewater processing with high salt, high organic wastewater with high salt
Successively by sedimentation basin, adjusting tank, rectifying pretreatment, evaporation and concentration, waste water incineration etc., the salt system for meeting industrial requirements is obtained
Product.
High organic wastewater with high salt first passes through sedimentation basin 1, and by static layering, upper layer liquid separation and bottom sediment are recycled
Or reuse, intermediate host water phase, which enters, adjusts tank 2.
Liquid alkaline is added when water is in acidity in the pH value that water is adjusted in adjusting tank 2, and when water is in alkalinity, acid solution is added,
The final pH value for adjusting water is between 7~9.Water after adjusting enters raw water tank 3.
The water of raw water tank 3 is entered in preheater 5 by feed pump 4, after evaporation condensate heat exchange, is pre-processed into rectifying
In the rectifying column 6 of system.In rectifying column 6, materials at bottom of tower enters evaporation concentration system, rest part through circulating pump 8, a part
Into in reboiler 7, at the top of rectifying column 6, low-boiling-point organic compound is left with gas phase, and is condensed in condenser 9
Get off, a part return rectifying column 6 in, it is a part of then as product recycling.
The control temperature of rectifying column 6 is evaporated by the low-boiling-point organic compound in water between 50 DEG C~150 DEG C, heat
Source may be from the byproduct steam of waste heat recycling 17.Between 50%~99%, the rate of recovery exists obtained low-boiling-point organic compound concentration
Between 60%~99.9%, the residual of low-boiling-point organic compound in water is reduced.
The pretreated water of rectifying enters evaporation and concentration, and evaporation process uses function of mechanical steam recompression evaporation technology, adding
In hot device 11, recycle stock is entered in separator 10, water is with secondary steaming by compressed Secondary-steam heating by circulating pump 12
The form of vapour leaves separator 10, compresses using vapour compression machine 13, then enters back into heat source of the heating room as evaporation, together
When secondary steam be also condensed, into condensate water pot 14, enter back into preheater 5 for heat charging.
The evaporating temperature of function of mechanical steam recompression between 50~100 DEG C, compressor can be used Roots Compressor or from
Core type compressor makes the saturation temperature of secondary steam improve 5~22 degree, can be than multiple-effect evaporation energy when the boiling point of water liter is not high
Energy consumption is effectively reduced, is able to achieve energy saving evaporation.
When being concentrated by evaporation obtained concentrate COD between 100,000 to 600,000, concentrate enters waste water incineration device 16.
In waste water incineration, for temperature at 800 DEG C~1500 DEG C, water is changed into gas phase, and the organic matter in water is turned by burning
Become carbon dioxide and water vapour, the salt after burning is able to satisfy industrial requirements.
Burn the gas generated and first pass through waste-heat recovery device 17, gas temperature by 800 DEG C~1500 DEG C be down to 100 DEG C~
Between 200 DEG C, and byproduct steam recycles heat therein.Steam after the recovery can be used for the heat supplement of prevapourising.
After waste heat recycles the gas after cooling down using exhaust gas processing device 18, qualified discharge.
High organic wastewater with high salt first passes through sedimentation basin, and using conditioning tank, acid or lye is added, adjusts the pH value in water
It is pre-processed to 7~9, then by rectifying, evaporates low-boiling organic matter, the low-boiling-point organic compound in waste water is evaporated, is obtained
Low-boiling-point organic compound concentration between 50%~99%, the rate of recovery is between 60~99.9%.Evaporate low-boiling-point organic compound
Waste water enter back into evaporation and concentration.When the concentrate COD that evaporation obtains is between 100,000 to 600,000, concentrate enters waste water and burns
It burns, the organic matter in water is transformed into carbon dioxide and water, the salt after waste water incineration is able to satisfy industrial requirements.Simultaneously by remaining
Heat recovery apparatus recycles heat, can be used for the pretreated heat consumption of rectifying.
It is more demanding suitable for the condensate liquid prevapourising, evaporated or the water not evaporated and dense evaporating
In contracting, it can not achieve effective evaporative crystallization and go out salt.
A kind of wastewater from chemical industry, salt content 2% or so, content of organics 6% or so, wherein low-boiling organic level fourth
The specific gravity that alcohol, butyraldehyde, octanol etc. account for total organic matter is 50% or so.Passed through by this technique when handling 5 ton/hours of water
Pre- rectifying, available low-boiling-point organic compound are 160 kgs/hour of aqueous solution of butanol, butyraldehyde, octanol etc., and concentration is about
90%.After removing low-boiling-point organic compound, waste water is using evaporation and concentration, when being concentrated to content of organics 35% or so, this
When enter liquid waste incineration, about 420 kgs/hour for the treatment of capacity, after burning, finally obtain 100 kgs/hour of product salt.
This technique can efficiently remove the organic components in waste water, and by being concentrated by evaporation according to the boiling point of organic matter,
The water steamed obtains reuse, realizes the zero-emission of waste water, while Organic substance in water being enriched with, is allowed to be more advantageous to waste water incineration.
Above-described embodiment is only the description that carries out to the preferred embodiment of the present invention, not to the scope of the present invention into
Row limits, without departing from the spirit of the design of the present invention, relevant technical staff in the field to various modifications of the invention and
It improves, should all expand in protection scope determined by claims of the present invention.
Claims (8)
1. a kind of method for obtaining product salt to high organic wastewater processing with high salt, which is characterized in that high organic wastewater with high salt
Successively by sedimentation basin, adjusting tank, rectifying pretreatment, evaporation and concentration, waste water incineration processing, the salt for meeting industrial requirements is obtained.
2. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 1, feature exist
In, comprising the following steps:
1) high organic wastewater with high salt first passes through sedimentation basin, by static layering, upper layer liquid separation and bottom sediment carry out recycling or
Reuse, intermediate host water phase enter adjusting tank；
2) liquid alkaline is added when water is in acidity in the pH value that water is adjusted in adjusting tank；When water is in alkalinity, acid solution is added；Finally
The pH value of water is adjusted between 7~9；Water after adjusting enters raw water tank；
3) water of raw water tank is entered in preheater by feed pump, after evaporation condensate heat exchange, into rectifying pretreatment system
Rectifying column in；
4) in rectifying column, materials at bottom of tower enters evaporation concentration system through circulating pump, a part, and rest part enters reboiler
In, at the top of rectifying column, low-boiling-point organic compound is left with gas phase, and is condensed in condenser 9, and a part is returned
Return rectifying column in, it is a part of then as product recycling；
5) when being concentrated by evaporation obtained concentrate COD between 100,000 to 600,000, concentrate enters waste water incineration device；It obtains
Meet the salt of industrial requirements.
3. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 1, feature exist
In in step 4), the control temperature of rectifying column is evaporated by the low-boiling-point organic compound in water between 50 DEG C~150 DEG C, obtains
The low-boiling-point organic compound concentration arrived is between 50%~99%, and the rate of recovery is between 60%~99.9%.
4. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 1, feature exist
In in step 4), evaporation process uses function of mechanical steam recompression evaporation technology, and in the heater, waste water is by compressed secondary
Steam heating, enters in separator, water leaves separator in the form of secondary steam, using vapour compression machine by circulating pump
Then compression enters back into heat source of the heating room as evaporation, while secondary steam is also condensed, into condensate water pot, then
Into preheater for heating charging.
5. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 4, feature exist
In for the evaporating temperature of function of mechanical steam recompression between 50 DEG C~100 DEG C, Roots Compressor or centrifugal is can be used in compressor
Compressor makes the saturation temperature of secondary steam improve 5 DEG C~22 DEG C.
6. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 2, feature exist
In in waste water incineration, for temperature at 800 DEG C~1500 DEG C, water is changed into gas phase, and the organic matter in water is transformed into two by burning
Carbonoxide and water vapour obtain the salt for meeting industrial requirements after burning.
7. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 2, feature exist
In in step 5), the gas for burning generation first passes through waste-heat recovery device, and gas temperature is down to 100 DEG C by 800 DEG C~1500 DEG C
Between~200 DEG C, and the heat in byproduct steam is recycled, steam after the recovery can be used for the heat supplement of prevapourising.
8. a kind of method for obtaining product salt to high organic wastewater processing with high salt according to claim 7, feature exist
In, after waste heat recycles the gas after cooling down using exhaust gas processing device, qualified discharge.
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|---|---|---|---|
| CN201910460063.8A CN110054342A (en) | 2019-05-29 | 2019-05-29 | A method of product salt is obtained to high organic wastewater processing with high salt |
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| CN201910460063.8A CN110054342A (en) | 2019-05-29 | 2019-05-29 | A method of product salt is obtained to high organic wastewater processing with high salt |
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| CN110054342A true CN110054342A (en) | 2019-07-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390451A (en) * | 2020-11-26 | 2021-02-23 | 瑞昌荣联环保科技有限公司 | Waste water treatment process generated in waste acrylic regeneration and recovery process |
| CN114702184A (en) * | 2022-04-08 | 2022-07-05 | 西安瑞联新材料股份有限公司 | High-salt high-organic-matter wastewater treatment device and method |
-
2019
- 2019-05-29 CN CN201910460063.8A patent/CN110054342A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390451A (en) * | 2020-11-26 | 2021-02-23 | 瑞昌荣联环保科技有限公司 | Waste water treatment process generated in waste acrylic regeneration and recovery process |
| CN114702184A (en) * | 2022-04-08 | 2022-07-05 | 西安瑞联新材料股份有限公司 | High-salt high-organic-matter wastewater treatment device and method |
| CN114702184B (en) * | 2022-04-08 | 2023-09-29 | 西安瑞联新材料股份有限公司 | High-salt high-organic matter wastewater treatment device and method |
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Application publication date: 20190726 |