CN107381921A - A kind of multi-filtering membrane filtration process of high slat-containing wastewater - Google Patents
A kind of multi-filtering membrane filtration process of high slat-containing wastewater Download PDFInfo
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- CN107381921A CN107381921A CN201710748698.9A CN201710748698A CN107381921A CN 107381921 A CN107381921 A CN 107381921A CN 201710748698 A CN201710748698 A CN 201710748698A CN 107381921 A CN107381921 A CN 107381921A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/58—Multistep processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
- B01D71/68—Polysulfones; Polyethersulfones
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
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- Hydrology & Water Resources (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of multi-filtering membrane filtration process of high slat-containing wastewater, including following steps：（1）High slat-containing wastewater is injected in the tank that prestores, alkali lye is then added, is stood after stirring；（2）Then solution enters in impurity treatment tank and filtered, and is filtered respectively by the filter layer of three layers of different pore size；（3）Solution after filtering is imported in membrane filtration process tank A, solution is carried out by organosilicon membrane component to be separated by filtration for the first time, solution is separated into the high slat-containing wastewater solution and the aqueous solution after concentration；（4）The aqueous solution is imported in membrane filtration process tank B, the aqueous solution is separated by filtration for the second time by organosilicon membrane component, brine waste remaining in the aqueous solution is isolated, obtains pure water solution.（5）Discharge is uniformly processed in high slat-containing wastewater solution after concentration and brine waste；（6）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts pure distilled water.
Description
Technical field
The present invention relates to technical field of waste water processing, the multi-filtering membrane filtration process of specially a kind of high slat-containing wastewater.
Background technology
Brine waste includes saliferous sanitary sewage, saliferous industrial wastewater and other brine wastes.High-salt wastewater refers to contain
There is the waste water of organic matter and the total dissolved solidss thing (TDS) of at least 3.5% (mass concentration).High-salt wastewater source is wide
It is general, first, from chemical industry, pharmacy, oil, printing and dyeing, papermaking, dairy produce processing, a variety of industrial processes such as food is canned；Two
It is the direct utilization of the haline waters such as seawater, such as seawater is used for circulating cooling, fire-fighting.
The organic matter of high-salt-content organic wastewater is different according to production process, and the species and chemical property of contained organic matter are poor
It is different larger, but contained salts substances are mostly Cl-、SO4 2- 、Na+、Ca2+Deng salts substances.
At present, the processing method of high salinity waste water is broadly divided into the joint of bioanalysis, Physical, chemical method and the above method
Facture.Because the osmotic pressure in high-salt wastewater is higher, easily causes microbial cell dehydration to be separated with cellular plasm, add
The toxic action of salting out and chlorion to bacterium, when salinity is high, the density of waste water increase, activated sludge easily floats stream
Lose, have a strong impact on the clean-up effect of biological treatment system, although as the progress and development of biochemical technology, salt tolerant Halophiles into
Work(separation, culture, domestication make it that the processing of high-salt wastewater is further developed, but due to environment be present in production practices
The features such as complicated and changeable and unmanageable, part strain will be applied in actual production, still have many problems demands to solve, because
This, simple bioanalysis can not meet the process demand of high-salt wastewater.In addition, the physical chemistry of currently used high-salt wastewater
Different degrees of high consumption be present in processing method such as electrolysis, burning method, evaporation, membrane distillation method and advanced oxidation processes etc.
The shortcomings of energy, high cost and secondary pollution.
The content of the invention
In order to overcome above mentioned problem, the present invention provides a kind of multi-filtering membrane filtration process of high slat-containing wastewater.
The technical scheme is that provide a kind of multi-filtering membrane filtration process of high slat-containing wastewater, it is characterised in that
Including following steps：
（1）High slat-containing wastewater is injected in the tank that prestores, alkali lye is then added, is stood after stirring；
（2）Solution after standing is then entered in impurity treatment tank to the mistake for carrying out granule foreign, floccule and partial organic substances
Filter, is filtered by the filter layer of three layers of different pore size respectively；
（3）Solution after filtering is imported in membrane filtration process tank A, first time filtering is carried out to solution by organosilicon membrane component
Separation, solution is separated into the high slat-containing wastewater solution and the aqueous solution after concentration；
（4）The aqueous solution is imported in membrane filtration process tank B, second of filtering point is carried out to the aqueous solution by organosilicon membrane component
From brine waste remaining in the aqueous solution is isolated, obtains pure water solution.
（5）By the high slat-containing wastewater solution after the concentration being separated by filtration for the first time and the brine waste being separated by filtration for the second time
Discharge is uniformly processed；
（6）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts pure distilled water.
Further, inorganic silicon composite membrane is provided with the organosilicon membrane component, the inorganic silicon composite membrane is to pass through
What following steps obtained：By the way that the Ludox fully diluted is coated on organic support body by high speed spin coating, by Low Temperature Thermal
Processing a period of time, one layer of very thin inorganic preformed layer is formed, then Ludox is spun to separating layer prefabricated above again
On, then Low Temperature Heat Treatment is carried out, obtain the inorganic silicon composite membrane of organic material support.
Further, organic support body is sulfonated polyether sulfone.
Further, the step（1）In, 30mim is stood after stirring.
Further, the step（2）In, solution first passes through the filter layer of large aperture, then the filter layer by middle aperture,
Finally by the filter layer of small-bore.
Further, the step（1）The alkali lye of middle addition is the 0.3-0.4% of high-salt wastewater gross weight.
The beneficial effects of the invention are as follows：The multi-filtering membrane filtration process of the high slat-containing wastewater of the present invention is by adding alkali lye
Pre-processed, then three layer filtration is carried out to solution by impurity treatment tank, it is organic to filter out granule foreign, floccule and part
Thing, then it is separated by filtration respectively by membrane filtration process tank A and membrane filtration process tank B, a part of waste water can be discharged directly,
By being discharged again after biological treatment, the pure water separated is regenerated as distilling a part of high slat-containing wastewater by evaporative filtration
Water recycle, be used in combination by biological treatment with organosilicon membrane, saving the energy, high treating effect, be suitable for petrochemical industry,
Pharmacy, the high slat-containing wastewater processing of food service industry.
（1）Technique is simple, is easy to amplify.The hot concentration technology of tradition（Multiple-effect evaporation）Need to introduce substantial amounts of heat energy by saliferous
Waste water is heated to part vaporization, is related to substantial amounts of heat-exchange apparatus and pump, whole set process occupation area of equipment in processing procedure
Greatly.Once selected, treating capacity is just basic to be determined the capital equipments such as evaporator, is not easy to amplify.And the processing method of the present invention is not required to
Substantial amounts of heat-exchange apparatus is wanted, same treatment amount equipment is simple, and floor space is small, while according to demand, procedure regulation is convenient, easily
In amplification.
（2）Process costs are low, and capacity usage ratio is high.Hot concentration technology（Multiple-effect evaporation）Although by heat-exchange apparatus significantly
Heat utilization rate is improved, but the starting stage still needs substantial amounts of high-grade heat energy, such as saturated vapor, therefore on the whole can
Consumption is beaten, and process costs are high.The processing method of the present invention can utilize low-grade industrial waste heat（30-60℃）, carry out multipotency coupling
Optimization, realize the low cost operation of high slat-containing wastewater processing.Relative to multiple-effect evaporation, operating cost of the invention can drop through measuring and calculating
Low 20%.
（3）Film preparation cost is low, and desalting efficiency is high.The organosilicon composite membrane preparation technology that is applied in the present invention it is simple and
Prepare that cost is low, while there is when handling high slat-containing wastewater the high hydrothermal stability and high salt that traditional polymer film do not possess
Removal efficiency.
It using the water vapour pressure differences of film front and rear sides is motive force that infiltration evaporation desalination, which is, not overcome salting liquid to produce in itself
Raw osmotic pressure so that process energy consumption and desalting performance will not produce big fluctuation with the change of brine strength, therefore open up
Reveal wide application prospect.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
A kind of as shown in figure 1, multi-filtering membrane filtration process of high slat-containing wastewater of the present invention, it is characterised in that including
Following steps：
（1）High slat-containing wastewater is injected in the tank that prestores, the 0.3-0.4% alkali lye of gross weight is then added, is stood after stirring
30mim；
（2）Solution after standing is then entered in impurity treatment tank to the mistake for carrying out granule foreign, floccule and partial organic substances
Filter, is filtered by the filter layer of three layers of different pore size respectively；
（3）Solution after filtering is imported in membrane filtration process tank A, first time filtering is carried out to solution by organosilicon membrane component
Separation, solution is separated into the high slat-containing wastewater solution and the aqueous solution after concentration；
（4）The aqueous solution is imported in membrane filtration process tank B, second of filtering point is carried out to the aqueous solution by organosilicon membrane component
From brine waste remaining in the aqueous solution is isolated, obtains pure water solution.
（5）By the high slat-containing wastewater solution after the concentration being separated by filtration for the first time and the brine waste being separated by filtration for the second time
Discharge is uniformly processed；
（6）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts pure distilled water.
Wherein, inorganic silicon composite membrane is provided with the organosilicon membrane component, the inorganic silicon composite membrane is by following
What step obtained：By the way that the Ludox fully diluted is coated on organic support body by high speed spin coating, by Low Temperature Heat Treatment
For a period of time, one layer of very thin inorganic preformed layer is formed, then Ludox is spun in separating layer prefabricated above again, then
Low Temperature Heat Treatment is carried out, obtains the inorganic silicon composite membrane of organic material support.
The nano level Ludox fully diluted（Average grain diameter is 2 nm or so）Can partial penetration during film preparation
To sulfonated polyether sulfone（SPES）In organic supporting layer, interlocking structure is formd between separating layer and the organic supporting layers of SPES（See
Fig. 1）, the interlocking structure formed by partial penetration enhances the interface binding power of separating layer and supporting layer, avoids separating layer from existing
It is cracked in film forming procedure.Low Temperature Heat Treatment is used during film preparation, further weakens separating layer and organic supporting layer
Between mismatch effect；Using high speed spin coating proceeding, help to prepare very thin uniform complete separating layer.
The step（2）In, solution first passes through the filter layer of large aperture, then the filter layer by middle aperture, finally by
The filter layer of small-bore.
A kind of above example only present invention embodiment therein, its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (7)
1. the multi-filtering membrane filtration process of a kind of high slat-containing wastewater, it is characterised in that including following steps：
（1）High slat-containing wastewater is injected in the tank that prestores, alkali lye is then added, is stood after stirring；
（2）Solution after standing is then entered in impurity treatment tank to the mistake for carrying out granule foreign, floccule and partial organic substances
Filter, is filtered by the filter layer of three layers of different pore size respectively；
（3）Solution after filtering is imported in membrane filtration process tank A, first time filtering is carried out to solution by organosilicon membrane component
Separation, solution is separated into the high slat-containing wastewater solution and the aqueous solution after concentration；
（4）The aqueous solution is imported in membrane filtration process tank B, second of filtering point is carried out to the aqueous solution by organosilicon membrane component
From brine waste remaining in the aqueous solution is isolated, obtains pure water solution.
2.（5）High slat-containing wastewater solution after the concentration being separated by filtration for the first time and the brine waste being separated by filtration for the second time are united
One processing discharge；
（6）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts pure distilled water.
A kind of 3. multi-filtering membrane filtration process of high slat-containing wastewater according to claim 1, it is characterised in that：It is described to have
Inorganic silicon composite membrane is provided with machine silicon fiml component, the inorganic silicon composite membrane through the following steps that obtain：By that will fill
Divide the Ludox of dilution to be coated to by high speed spin coating on organic support body, by Low Temperature Heat Treatment for a period of time, formed very thin
One layer of inorganic preformed layer, then Ludox is spun in separating layer prefabricated above again, then carry out Low Temperature Heat Treatment, obtained
The inorganic silicon composite membrane of organic material support.
A kind of 4. multi-filtering membrane filtration process of high slat-containing wastewater according to claim 2, it is characterised in that：It is described to have
Machine support body is sulfonated polyether sulfone.
A kind of 5. multi-filtering membrane filtration process of high slat-containing wastewater according to claim 1, it is characterised in that：The step
Suddenly（1）In, 30mim is stood after stirring.
A kind of 6. multi-filtering membrane filtration process of high slat-containing wastewater according to claim 1, it is characterised in that：The step
Suddenly（2）In, solution first passes through the filter layer of large aperture, then the filter layer by middle aperture, finally by the filter layer of small-bore.
A kind of 7. multi-filtering membrane filtration process of high slat-containing wastewater according to claim 1, it is characterised in that：The step
Suddenly（1）The alkali lye of middle addition is the 0.3-0.4% of high-salt wastewater gross weight.
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| CN201710748698.9A CN107381921A (en) | 2017-08-28 | 2017-08-28 | A kind of multi-filtering membrane filtration process of high slat-containing wastewater |
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| CN201710748698.9A CN107381921A (en) | 2017-08-28 | 2017-08-28 | A kind of multi-filtering membrane filtration process of high slat-containing wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002694A (en) * | 2019-05-13 | 2019-07-12 | 浙江嘉化新材料有限公司 | A kind of waste water desalination processing system |
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| CN104496078A (en) * | 2014-12-23 | 2015-04-08 | 唐山亨通科技有限公司 | Treatment process of high-salinity wastewater |
| JP2015110218A (en) * | 2013-10-30 | 2015-06-18 | 国立大学法人広島大学 | Separation filter manufacturing method |
| CN105152443A (en) * | 2015-09-22 | 2015-12-16 | 江苏中圣高科技产业有限公司 | Method and system for recycling crystallized salt resources in high-salt-content wastewater zero discharge |
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2017
- 2017-08-28 CN CN201710748698.9A patent/CN107381921A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10128088A (en) * | 1996-11-06 | 1998-05-19 | Mitsubishi Heavy Ind Ltd | Composite separation membrane and its production |
| CN1850635A (en) * | 2006-05-24 | 2006-10-25 | 浙江大学 | High-salt epoxy resin production waste-water film integrated salt recovery and biochemical treatment method |
| JP2015110218A (en) * | 2013-10-30 | 2015-06-18 | 国立大学法人広島大学 | Separation filter manufacturing method |
| CN104496078A (en) * | 2014-12-23 | 2015-04-08 | 唐山亨通科技有限公司 | Treatment process of high-salinity wastewater |
| CN105152443A (en) * | 2015-09-22 | 2015-12-16 | 江苏中圣高科技产业有限公司 | Method and system for recycling crystallized salt resources in high-salt-content wastewater zero discharge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002694A (en) * | 2019-05-13 | 2019-07-12 | 浙江嘉化新材料有限公司 | A kind of waste water desalination processing system |
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