CN107473507A - A kind of handling process of high-salt wastewater - Google Patents
A kind of handling process of high-salt wastewater Download PDFInfo
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- CN107473507A CN107473507A CN201710741125.3A CN201710741125A CN107473507A CN 107473507 A CN107473507 A CN 107473507A CN 201710741125 A CN201710741125 A CN 201710741125A CN 107473507 A CN107473507 A CN 107473507A
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- salt wastewater
- handling process
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- aqueous solution
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/448—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by pervaporation
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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)
- Activated Sludge Processes (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of handling process of high-salt wastewater.Handling process includes following steps：（1）Alkali lye is added in high-salt wastewater, is stood after stirring；Solution after standing is filtered by milipore filter；（2）It is pumped into after solution heating after filtering by pump in organosilicon membrane component, passes through the aqueous solution and pure water solution after being concentrated after organosilicon membrane components apart；（3）The aqueous solution after concentration enters biological treatment tank, and halophilic microorganism is added in biological treatment tank, maintains the temperature at 30 35 DEG C, and after reacting 12 days, the waste water that can be discharged is obtained after ultrafiltration membrance filter.The handling process of the present invention is pre-processed by adding alkali lye, is then concentrated by organosilicon membrane, a part of waste water can be discharged directly, a part of waste water by being discharged again after biological treatment, it is used in combination by biological treatment with organosilicon membrane, saves the energy, high treating effect.
Description
Technical field
The present invention relates to a kind of processing method of high-salt wastewater, belong to technical field of waste water processing.
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
For overcome the deficiencies in the prior art, the invention provides a kind of handling process of high-salt wastewater.
The present invention is achieved through the following technical solutions：
A kind of handling process of high-salt wastewater, including following steps：
（1）Alkali lye is added in high-salt wastewater, is stood after stirring；Solution after standing is filtered by milipore filter；
（2）It is pumped into after solution heating after filtering by pump in organosilicon membrane component, by being obtained after organosilicon membrane components apart
The aqueous solution and pure water solution after to concentration；
（3）The aqueous solution after concentration enters biological treatment tank, and halophilic microorganism is added in biological treatment tank, is maintained the temperature at
30-35 DEG C, after reacting 1-2 days, the waste water that can be discharged is obtained after ultrafiltration membrance filter.
A kind of processing method of described high-salt wastewater, inorganic silicon composite membrane, institute are provided with the organosilicon membrane component
State inorganic silicon composite membrane through the following steps that obtain：By the way that the Ludox fully diluted has been coated to by high speed spin coating
On machine support body, by Low Temperature Heat Treatment for a period of time, one layer of very thin inorganic preformed layer is formed, then again by Ludox spin coating
Onto separating layer prefabricated above, then Low Temperature Heat Treatment is carried out, obtain the inorganic silicon composite membrane of organic material support.
A kind of handling process of described high-salt wastewater, activated sludge, pH 8-9 are added in the biological treatment tank.
A kind of handling process of described high-salt wastewater, the step（2）Middle heating-up temperature is 50-60 DEG C.
A kind of handling process of described high-salt wastewater, the step（1）The alkali lye of middle addition is high-salt wastewater gross weight
0.5-1%。
A kind of handling process of described high-salt wastewater, it is characterized in that, the step（2）Salt in the aqueous solution after middle concentration
Content is 10-15%.
The beneficial effect that the present invention is reached：
The handling process of the present invention is pre-processed by adding alkali lye, is then concentrated by organosilicon membrane, and a part is useless
Water can be discharged directly, and by being discharged again after biological treatment, combined by biological treatment with organosilicon membrane makes a part of waste water
With the saving energy, high treating effect is suitable for petrochemical industry, pharmacy, and the high slat-containing wastewater of food service industry is handled.
（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.
Embodiment
Embodiment 1
A kind of handling process of high-salt wastewater, including following steps：
（1）High-salt wastewater gross weight 0.5-1% alkali lye is added in high-salt wastewater, is stood after stirring；Solution after standing leads to
Hollow fiber ultrafiltration membrane is crossed to be filtered；The alkali lye is sodium carbonate liquor, and the mass fraction of the red sodium carbonate of sodium carbonate liquor is
60-70%；
（2）Solution after filtering is heated to 50-60 DEG C, is then pumped into by pump in organosilicon membrane component, passes through organosilicon membrane group
The aqueous solution and pure water solution after being concentrated after part separation；Salt content is 10-15% in the aqueous solution after concentration；
（3）The aqueous solution after concentration enters biological treatment tank, and regulation pH is 8-9, slant strains 30-35 again after culture medium activates
DEG C, 150r/min Liquid Cultures 2d obtain bacteria suspension, bacteria suspension and activated sludge are added into biological treatment tank, keeping temperature together
At 30-35 DEG C, Air Exposure is carried out using oxygen increasing pump, after reacting 1-2d, obtains what can be discharged after organic ultrafiltration membrance filter
Waste 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, 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.
Embodiment 2
Somewhere high-salt wastewater index is should：PH is 2-3, electrical conductivity is 5000-6000 μ S/cm, COD 60-
100mg/L, salt content 3%.
Processing method is as follows：
（1）The alkali lye of high-salt wastewater gross weight 1% is added in high-salt wastewater, is stood after stirring；Solution after standing is in
Fibre ultrafiltration film is filtered；The alkali lye is sodium carbonate liquor, and the mass fraction of the red sodium carbonate of sodium carbonate liquor is 70%；
（2）Solution after filtering is heated to 50 DEG C, is then pumped into by pump in organosilicon membrane component, passes through organosilicon membrane component point
From the aqueous solution and pure water solution after being concentrated afterwards；Salt content is 10-15% in the aqueous solution after concentration；
（3）The aqueous solution after concentration enters biological treatment tank, and regulation pH is 8-9, slant strains 30-35 again after culture medium activates
DEG C, 150r/min Liquid Cultures 2d obtain bacteria suspension, bacteria suspension and activated sludge are added into biological treatment tank, keeping temperature together
At 30-35 DEG C, Air Exposure is carried out using oxygen increasing pump, after reacting 1-2d, obtains what can be discharged after organic ultrafiltration membrance filter
Waste water.
The waste water production water power finally obtained leads≤100 μ S/cm, production water CODcr<10mg/L, Water Sproading rate are higher than 97%.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of handling process of high-salt wastewater, it is characterized in that, including following steps：
（1）Alkali lye is added in high-salt wastewater, is stood after stirring；Solution after standing is filtered by milipore filter；
（2）It is pumped into after solution heating after filtering by pump in organosilicon membrane component, by being obtained after organosilicon membrane components apart
The aqueous solution and pure water solution after to concentration；
（3）The aqueous solution after concentration enters biological treatment tank, and halophilic microorganism is added in biological treatment tank, is maintained the temperature at
30-35 DEG C, after reacting 1-2 days, the waste water that can be discharged is obtained after ultrafiltration membrance filter.
2. a kind of processing method of high-salt wastewater according to claim 1, it is characterized in that, set in the organosilicon membrane component
Be equipped with inorganic silicon composite membrane, the inorganic silicon composite membrane through the following steps that obtain：Pass through the Ludox that will fully dilute
It is coated to by high speed spin coating on organic support body, by Low Temperature Heat Treatment for a period of time, it is inorganic prefabricated forms very thin one layer
Ludox, is then spun in separating layer prefabricated above by layer again, then carries out Low Temperature Heat Treatment, obtains organic material support
Inorganic silicon composite membrane.
3. a kind of handling process of high-salt wastewater according to claim 1, it is characterized in that, added in the biological treatment tank
Activated sludge, pH 8-9.
4. a kind of handling process of high-salt wastewater according to claim 1, it is characterized in that, the step（2）Middle heating temperature
Spend for 50-60 DEG C.
5. a kind of handling process of high-salt wastewater according to claim 1, it is characterized in that, the step（1）Middle addition
Alkali lye is the 0.5-1% of high-salt wastewater gross weight.
6. a kind of handling process of high-salt wastewater according to claim 1, it is characterized in that, the step（2）After middle concentration
The aqueous solution in salt content be 10-15%.
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| CN201710741125.3A CN107473507A (en) | 2017-08-25 | 2017-08-25 | A kind of handling process of high-salt wastewater |
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Citations (6)
| 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 |
| CN101885569A (en) * | 2010-08-06 | 2010-11-17 | 中环（中国）工程有限公司 | Process for treating high-salinity organic 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 |
| CN105753248A (en) * | 2016-03-14 | 2016-07-13 | 博天环境集团股份有限公司 | Evaporation pretreatment method of reverse osmosis concentrated saline solution |
-
2017
- 2017-08-25 CN CN201710741125.3A patent/CN107473507A/en active Pending
Patent Citations (6)
| 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 |
| CN101885569A (en) * | 2010-08-06 | 2010-11-17 | 中环（中国）工程有限公司 | Process for treating high-salinity organic 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 |
| CN105753248A (en) * | 2016-03-14 | 2016-07-13 | 博天环境集团股份有限公司 | Evaporation pretreatment method of reverse osmosis concentrated saline solution |
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