CN107352722A - A kind of high slat-containing wastewater is separated by filtration technique - Google Patents

A kind of high slat-containing wastewater is separated by filtration technique Download PDF

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Publication number
CN107352722A
CN107352722A CN201710740841.XA CN201710740841A CN107352722A CN 107352722 A CN107352722 A CN 107352722A CN 201710740841 A CN201710740841 A CN 201710740841A CN 107352722 A CN107352722 A CN 107352722A
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China
Prior art keywords
solution
containing wastewater
high slat
separated
tank
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Pending
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CN201710740841.XA
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Chinese (zh)
Inventor
徐荣
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Suzhou Sebbe Membrane Separation Technology Co Ltd
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Suzhou Sebbe Membrane Separation Technology Co Ltd
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Priority to CN201710740841.XA priority Critical patent/CN107352722A/en
Publication of CN107352722A publication Critical patent/CN107352722A/en
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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
    • 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
    • C02F1/048—Purification of waste water by 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection

Abstract

The invention discloses a kind of technique that is separated by filtration 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）Solution after standing is then entered in impurity treatment tank to the filtering for carrying out granule foreign, floccule and partial organic substances, filtered respectively by the filter layer of three layers of different pore size；（3）Filter the solution finished to be conveyed into disinfection tank, active charcoal bag is put into disinfection tank absorbing disinfection processing is carried out to solution, during absorbing disinfection, high slat-containing wastewater is carried out completely at the uniform velocity to stir；（4）After adsorbing 12 hours, solution is imported in membrane filtration process tank, solution is separated by filtration by organosilicon membrane component, solution is separated into the high slat-containing wastewater solution and pure water solution after concentration, the high slat-containing wastewater solution after concentration is focused on by conduit discharge；（5）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts distilled water.

Description

A kind of high slat-containing wastewater is separated by filtration technique
Technical field
The present invention relates to technical field of waste water processing, specially a kind of high slat-containing wastewater is separated by filtration technique.
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, a kind of high slat-containing wastewater of present invention offer is separated by filtration technique.
The technical scheme is that provide a kind of high slat-containing wastewater is separated by filtration technique, it is characterised in that including with Under several 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）Filter the solution finished to be conveyed into disinfection tank, active charcoal bag is put into disinfection tank absorbing disinfection is carried out to solution Processing, during absorbing disinfection, high slat-containing wastewater is carried out completely at the uniform velocity to stir；
（4）After adsorbing 1-2 hours, solution is imported in membrane filtration process tank, solution filtered by organosilicon membrane component Separation, solution is separated into the high slat-containing wastewater solution and pure water solution after concentration, the high slat-containing wastewater solution after concentration passes through Conduit discharge focuses on；
（5）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, the step（1）30mim is stood after middle 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（3）In, multiple active charcoal bags are placed with, multiple active charcoal bags is are placed equidistant, activity Granular activated carbon is placed with charcoal bag.
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 technique that is separated by filtration of the high slat-containing wastewater of the present invention is carried out in advance by adding alkali lye Processing, then three layer filtration is carried out to solution by impurity treatment tank, granule foreign, floccule and partial organic substances are filtered out, and The absorbing disinfection for carrying out activated carbon to solution afterwards is handled, then is concentrated by organosilicon membrane, and a part of waste water can be discharged directly, For a part of waste water by being discharged again after biological treatment, it is sharp again that the pure water separated by evaporative filtration is regenerated as distilled water With, it is used in combination by biological treatment with organosilicon membrane, saves 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.
As shown in figure 1, a kind of high slat-containing wastewater of the present invention is separated by filtration technique, including following steps：
（1）High slat-containing wastewater is injected in the tank that prestores, the 0.3-0.4% of gross weight alkali lye 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）Filter the solution finished to be conveyed into disinfection tank, active charcoal bag is put into disinfection tank absorbing disinfection is carried out to solution Processing, during absorbing disinfection, high slat-containing wastewater is carried out completely at the uniform velocity to stir；
（4）After adsorbing 1-2 hours, solution is imported in membrane filtration process tank, solution filtered by organosilicon membrane component Separation, solution is separated into the high slat-containing wastewater solution and pure water solution after concentration, the high slat-containing wastewater solution after concentration passes through Conduit discharge focuses on；
（5）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.
Step（2）In, solution first passes through the filter layer of large aperture, then the filter layer by middle aperture, finally by aperture The filter layer in footpath.
Step（3）In, multiple active charcoal bags are placed with, multiple active charcoal bags are placed with to be placed equidistant in active charcoal bag Granular activated carbon.
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, because Partial penetration and the interlocking structure that is formed enhance the interface binding power of separating layer and supporting layer, avoid separating layer in film forming procedure In it is cracked.Low Temperature Heat Treatment is used during film preparation, is further weakened between separating layer and organic supporting layer not Matching effect；Using high speed spin coating proceeding, help to prepare very thin uniform complete separating layer.
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 (6)

1. a kind of high slat-containing wastewater is separated by filtration technique, 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）Filter the solution finished to be conveyed into disinfection tank, active charcoal bag is put into disinfection tank absorbing disinfection is carried out to solution Processing, during absorbing disinfection, high slat-containing wastewater is carried out completely at the uniform velocity to stir；
（4）After adsorbing 1-2 hours, solution is imported in membrane filtration process tank, solution filtered by organosilicon membrane component Separation, solution is separated into the high slat-containing wastewater solution and pure water solution after concentration, the high slat-containing wastewater solution after concentration passes through Conduit discharge focuses on；
（5）Pure water solution is moved to vaporization chamber and is evaporated filtering, extracts pure distilled water.
2. a kind of high slat-containing wastewater according to claim 1 is separated by filtration technique, it is characterised in that：The organosilicon membrane Inorganic silicon composite membrane is provided with component, the inorganic silicon composite membrane through the following steps that obtain：By will fully dilute Ludox 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 Inorganic preformed layer, then Ludox is spun in separating layer prefabricated above again, then carries out Low Temperature Heat Treatment, obtain organic material Expect the inorganic silicon composite membrane of support.
3. a kind of high slat-containing wastewater according to claim 1 is separated by filtration technique, it is characterised in that：The step（1） 30mim is stood after middle stirring.
4. a kind of high slat-containing wastewater according to claim 1 is separated by filtration technique, it is characterised in that：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.
5. a kind of high slat-containing wastewater according to claim 1 is separated by filtration technique, it is characterised in that：The step（3） In, multiple active charcoal bags are placed with, multiple active charcoal bags are placed with granular activated carbon to be placed equidistant in active charcoal bag.
6. a kind of high slat-containing wastewater according to claim 1 is separated by filtration technique, it is characterised in that：The step（1） The alkali lye of middle addition is the 0.3-0.4% of high-salt wastewater gross weight.
CN201710740841.XA 2017-08-25 2017-08-25 A kind of high slat-containing wastewater is separated by filtration technique Pending CN107352722A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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
CN103145264A (en) * 2013-02-27 2013-06-12 瓮福（集团）有限责任公司 Purifying treatment and recycling process for high-salt-content reclaimed water
JP2015110218A (en) * 2013-10-30 2015-06-18 国立大学法人広島大学 Separation filter manufacturing method
CN105016530A (en) * 2015-08-07 2015-11-04 沧州绿源水处理有限公司 Comprehensive treatment process of waste water high in concentration and high in salinity
CN106110909A (en) * 2016-08-03 2016-11-16 常州大学 The preparation method of a kind of organosilicon membrane and infiltration evaporation thereof process the application of high slat-containing wastewater

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
CN103145264A (en) * 2013-02-27 2013-06-12 瓮福（集团）有限责任公司 Purifying treatment and recycling process for high-salt-content reclaimed water
JP2015110218A (en) * 2013-10-30 2015-06-18 国立大学法人広島大学 Separation filter manufacturing method
CN105016530A (en) * 2015-08-07 2015-11-04 沧州绿源水处理有限公司 Comprehensive treatment process of waste water high in concentration and high in salinity
CN106110909A (en) * 2016-08-03 2016-11-16 常州大学 The preparation method of a kind of organosilicon membrane and infiltration evaporation thereof process the application of high slat-containing wastewater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李永峰等: "《现代环境工程材料》", 31 July 2012 *

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