CN107721026A - A kind of process for treating industrial waste water - Google Patents
A kind of process for treating industrial waste water Download PDFInfo
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- CN107721026A CN107721026A CN201711195937.9A CN201711195937A CN107721026A CN 107721026 A CN107721026 A CN 107721026A CN 201711195937 A CN201711195937 A CN 201711195937A CN 107721026 A CN107721026 A CN 107721026A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
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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
- 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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- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of process for treating industrial waste water, and it comprises the following steps：（1）Pre-filtering and preformed precipitate；（2）Sterilization and acid-base value regulation；（3）Go the removal of impurity and secondary filter；（4）Fine filtering.This method is stable, reliable, is effectively improved the treatment effeciency of industrial wastewater, and high treating effect.The process for treating industrial waste water is simple to operate, operating cost is low, saves floor space, easily realizes and automatically controls, and obvious processing effect, obtained discharge water comply fully with environmental emission standard.
Description
Technical field
The present invention relates to the chemical technology field of wastewater treatment, especially, is related to a kind of process for treating industrial waste water.
Background technology
In recent years, as the industry such as fast development, some chemical industry, pharmacy, papermaking, food, fermentation of China's industry is discharged
Substantial amounts of high solubility sulfate-containing organic wastewater is into natural, ecological water body.Excessive sulfate can not only make water body in water body
Smelly, water quality degenerates, and can limit the growth of aquatile and plant strongly, causes the salination of Soil Surrounding, in a word
The extensive concern for being on the rise and causing people that its caused water body, soil pollution are just becoming.
Industrial wastewater refers to caused waste water, sewage and waste liquid in industrial processes, wherein containing the work outflowed with water
Caused pollutant in industry production materials, intermediate product and product and production process.As industrial develops rapidly, waste water
Type and quantity rapidly increase, and the pollution to water body is also increasingly extensively and serious, threaten the health and safety of the mankind.
Biochemical treatment system can remove most of organic matter in industrial wastewater.With membranous system (nanofiltration, counter-infiltration, just
Infiltration, membrane distillation) progress to the concentration of waste water, obtain purer, recoverable production water, and organic matter and salt
Concentrated in concentrated water.Evaporation and crystallization system is evaporated to film concentration concentrated water, crystallization treatment, obtains purer production water and crystallization
Salt.In practical operation, processing of the evaporation and crystallization system to waste water is a process constantly concentrated, although vapo(u)rization system is intake
Content of organics is lower than raw wastewater, but with the progress of evaporation process, the organic matter in waste water further concentrates, and causes to produce high
The waste water of saliferous, high content of organics.When the content of organics in evaporation and crystallization system is too high, evaporative crystallization system may result in
System easily produces a large amount of foams, so as to trigger system to fly material and the problem of entrainment, influences producing water water quality, reduction vapo(u)rization system
Disposal ability, the quality for reducing crystal salt.In addition, each brush tank cycle can produce a large amount of high saliferous, high organically difficult
Waste water, influence whole Waste Water Treatment operating condition and whole wastewater zero discharge process.
Although the method for prior art can further be concentrated to reverse osmosis concentrated water, the organic matter in waste water obtains
Removed less than effective.With continuous concentration of the waste water in vapo(u)rization system, the problem of flying material and entrainment is produced, makes production water water
Matter deteriorates, and evaporation process ability reduces, crystal salt quality decline, and then influences whole production process.In addition, existing Industry Waste
Method for treating water and system can not economical and effective a large amount of sewage for handling chemical industries discharge.
The content of the invention
To solve the above problems, the invention provides a kind of process for treating industrial waste water.This method is stable, reliable, has
Improve to effect the treatment effeciency of industrial wastewater, and high treating effect.The process for treating industrial waste water is simple to operate, operating cost
It is low, floor space is saved, easily realizes and automatically controls, and obvious processing effect, obtained discharge water comply fully with environment protection emission
Standard.
The present invention is that technical scheme is a kind of process for treating industrial waste water used by solving above-mentioned technical problem, and it includes
Following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 13-18min, then are settled
Processing, the time of settlement treatment is 15-25min, then is to waste water progress flotation, duration by electric flocculating high pressure water purifier
5-10min, that is, obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 20-40min, then adjusted its pH to 6-7 with NaOH, i.e., the work after adjusted pH-value
Industry waste water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 3500-4500mg/L, and it is 7-8 hours to make facultative aerobic membrane bioreactor hydraulic detention time, then adds reducing agent,
Filtration treatment is carried out using activated carbon filtering technique, then carries out settlement treatment, the settlement treatment time is 30-40min, that is, is obtained
Industrial wastewater after filter；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater using three-level composite fiber membrane material carry out filtration treatment, so
Advanced oxidation processing is carried out afterwards, wherein adding the mixture of ferrous ion and hydrogen peroxide, regulation pH value is 3.5-4.5, you can
Obtain the discharge water for meeting environmental protection standard；The three-level composite fiber membrane material shares three layers, every layer of material by di-iron trioxide,
The porous fibre composition that titanium dioxide, activated carbon three-phase are formed, the thickness of composite cellulosic membrane is 100-150 microns, and porosity is
70-80%, nanometer di-iron trioxide is with the uniform growth in situ of nano titanium oxide in the surface of porous activated carbon fiber or bone
The mol ratio 1 of nano composite structure, di-iron trioxide and titanium dioxide is formed in frame：5-5：1, quality of activated carbon content accounts for entirely
The 20-30% of composite fiber membrane material.
Preferably, the mass ratio of montmorillonite and S Sodium Polyacrylates is in the mixture of montmorillonite and the S Sodium Polyacrylate
1:2-2.5, addition 30-50ppm；The mass ratio of bleaching powder and dichlormaine is in the mixture of the bleaching powder and dichlormaine
1:2-2.5, addition are the 0.1%-0.2% of industrial wastewater quality.
In any of the above-described scheme preferably, industrial wastewater internal oxygen concentration when by one-level Aerobic Pond is 3-
5mg/L, hydraulic detention time are 5-7 hours；Industrial wastewater internal oxygen concentration when by two level aerobic aeration pond is 5-
7mg/L, hydraulic detention time are 6-7 hours.
In any of the above-described scheme preferably, industrial wastewater internal oxygen concentration when by one-level anaerobism aeration tank is
0.05-0.1mg/L, hydraulic detention time are 10-14 hours；Industrial wastewater internal oxygen when by secondary anaerobic aeration tank is dense
It is 10-12 hours to spend for 0.03-0.08mg/L, hydraulic detention time.
It is preferably in any of the above-described scheme, the first layer composite cellulosic membrane in the three-level composite fiber membrane material
Aperture is 0.008-0.01 microns, and the aperture of second layer composite cellulosic membrane is 0.003-0.005 microns, third layer composite cellulosic membrane
Aperture be 0.001-0.002 microns.
In any of the above-described scheme preferably, aeration and diaphragm aerating pipelines and drum in the facultative aerobic membrane bioreactor
Blower fan connects, and supporting collector pipe connects with self priming pump on membrane module, and pending sewage passes through facultative aerobic membrane bioreactor one
The water inlet of side enters in the facultative aerobic membrane bioreactor, and by antipollution plate film assembly, entrance then is pumped out by self-priming
Clear water sterilization pool, the side of the facultative aerobic membrane bioreactor bottom offer evacuation port.
In any of the above-described scheme preferably, the preparation method of the three-level composite fiber membrane material is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 1：5-
5：1 mixing is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution are uniformly mixed and on magnetic stirring apparatus
Stirring 8-10 hours obtain precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 22-23kV carries out electrostatic spinning, and carried out by roller
Collect, roller is away from nozzle distance 25-28cm, and setting speed is 160-180r/min, and spinning obtains precursor fibre after terminating
Film；
C. by precursor fibre film in Muffle furnace at 250-260 DEG C pre-process 5.5-6 hours after, be placed in two pieces of graphite cakes it
Between, the roasting 5-7 hours at 720-780 DEG C are put into argon gas atmosphere stove, obtain the composite fiber membrane material of nanostructured.
The present invention is according to obtained by practical application practice for many years and experience, is entered using optimal technological means and measure
Row Combinatorial Optimization, obtains optimal technique effect, is not the simple superposition of technical characteristic and pieces together, therefore the present invention has
Significant meaning.
Beneficial effects of the present invention：
1. the process for treating industrial waste water of the present invention can realize effective processing, the reuse of industrial wastewater, and thoroughly solve useless
Water treatment system end organic matter can not degrade, the problem of making its operational effect poor, unstable, thus be it is a kind of efficiently, stably
Method of wastewater treatment.
2. the processing method of the present invention causes the total removal rate of waste water COD to be more than 99%, water outlet COD value is less than 30mg/L.
Stable water outlet is up to standard, construction investment is small, operating cost is cheap, recyclable biomass energy, management are simple, is easy to engineering to promote
Using providing new technological approaches for industrial wastewater treatment.
3. the operational effect of the present invention is good, reliability is high, stable effluent quality.When handling trade effluent, impact resistance is born
Lotus, high to contaminant removal efficiency, nitrification ability is strong.Have the function of denitrogenation dephosphorizing concurrently, be especially suitable for handling industrial wastewater, city
City's sewage etc., water outlet can with reuse can also direct qualified discharge, disclosure satisfy that the demand of the different quality of different user.
4. there is sterilizing to act on to industrial wastewater and effectively can remove in water outlet for the processing method of the present invention
Heavy metal ion, secondary pollution problem caused by not only overcoming but also reduce the heavy metal concentration of water outlet, make the water of recycle-water
Matter greatly improves.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but claimed scope is not limited thereto.
Embodiment 1
A kind of process for treating industrial waste water, it comprises the following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 13min, then are carried out at sedimentation
Reason, the time of settlement treatment be 25min, then by electric flocculating high pressure water purifier to waste water progress flotation, duration 5min,
Obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 40min, then adjusted its pH to 6 with NaOH, i.e., the Industry Waste after adjusted pH-value
Water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 4500mg/L, and it is 7 hours to make facultative aerobic membrane bioreactor hydraulic detention time, reducing agent is then added, using work
Property charcoal filtering technique carry out filtration treatment, then carry out settlement treatment, the settlement treatment time is 40min, that is, the work after being filtered
Industry waste water；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater using three-level composite fiber membrane material carry out filtration treatment, so
Advanced oxidation processing is carried out afterwards, wherein adding the mixture of ferrous ion and hydrogen peroxide, regulation pH value is 3.5, you can is obtained
Meet the discharge water of environmental protection standard；The three-level composite fiber membrane material shares three layers, and every layer of material is by di-iron trioxide, dioxy
Change titanium, the porous fibre composition that activated carbon three-phase is formed, the thickness of composite cellulosic membrane is 150 microns, porosity 70%, nanometer
Di-iron trioxide forms nanometer with the uniform growth in situ of nano titanium oxide in the surface of porous activated carbon fiber or skeleton
The mol ratio 1 of composite construction, di-iron trioxide and titanium dioxide：5, quality of activated carbon content accounts for whole composite fiber membrane material
20-30%.
The mass ratio of montmorillonite and S Sodium Polyacrylates is 1 in the mixture of montmorillonite and the S Sodium Polyacrylate:2, add
Dosage is 50ppm；The mass ratio of bleaching powder and dichlormaine is 1 in the mixture of the bleaching powder and dichlormaine:2, addition is
The 0.2% of industrial wastewater quality.
Industrial wastewater internal oxygen concentration when by one-level Aerobic Pond is 5mg/L, and hydraulic detention time is 5 hours；Work
Industry waste water internal oxygen concentration when by two level aerobic aeration pond is 7mg/L, and hydraulic detention time is 6 hours.
Industrial wastewater internal oxygen concentration when by one-level anaerobism aeration tank is 0.1mg/L, hydraulic detention time 10
Hour；Industrial wastewater internal oxygen concentration when by secondary anaerobic aeration tank is 0.08mg/L, and hydraulic detention time is 10 small
When.
The aperture of first layer composite cellulosic membrane in the three-level composite fiber membrane material is 0.01 micron, and the second layer is compound
The aperture of tunica fibrosa is 0.003 micron, and the aperture of third layer composite cellulosic membrane is 0.002 micron.
Aeration and diaphragm aerating pipelines connect with air blower in the facultative aerobic membrane bioreactor, supporting collection on membrane module
Water pipe connects with self priming pump, and pending sewage enters this and oxygen film biology by the water inlet of facultative aerobic membrane bioreactor side
In reactor, by antipollution plate film assembly, then it is pumped out by self-priming into clear water sterilization pool, described and oxygen membrane bioreaction
The side of device bottom is answered to offer evacuation port.
The preparation method of the three-level composite fiber membrane material is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 1：5 is mixed
Conjunction is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution uniformly mixing and are stirred on magnetic stirring apparatus 10
Hour obtains precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 22kV carries out electrostatic spinning, and received by roller
Collection, roller is away from nozzle distance 28cm, and setting speed is 160r/min, and spinning obtains precursor fibre film after terminating；
C. after precursor fibre film is pre-processed 5.5 hours in Muffle furnace at 260 DEG C, it is placed between two pieces of graphite cakes, puts
Enter in argon gas atmosphere stove and be calcined 5 hours at 780 DEG C, obtain the composite fiber membrane material of nanostructured.
Embodiment 2
A kind of process for treating industrial waste water, it comprises the following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 18min, then are carried out at sedimentation
Reason, the time of settlement treatment is 15min, then is to waste water progress flotation, duration by electric flocculating high pressure water purifier
10min, that is, obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 20min, then adjusted its pH to 7 with NaOH, i.e., the Industry Waste after adjusted pH-value
Water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 3500mg/L, and it is 8 hours to make facultative aerobic membrane bioreactor hydraulic detention time, reducing agent is then added, using work
Property charcoal filtering technique carry out filtration treatment, then carry out settlement treatment, the settlement treatment time is 30min, that is, the work after being filtered
Industry waste water；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater using three-level composite fiber membrane material carry out filtration treatment, so
Advanced oxidation processing is carried out afterwards, wherein adding the mixture of ferrous ion and hydrogen peroxide, regulation pH value is 4.5, you can is obtained
Meet the discharge water of environmental protection standard；The three-level composite fiber membrane material shares three layers, and every layer of material is by di-iron trioxide, dioxy
Change titanium, the porous fibre composition that activated carbon three-phase is formed, the thickness of composite cellulosic membrane is 100 microns, porosity 80%, nanometer
Di-iron trioxide forms nanometer with the uniform growth in situ of nano titanium oxide in the surface of porous activated carbon fiber or skeleton
The mol ratio 5 of composite construction, di-iron trioxide and titanium dioxide：1, quality of activated carbon content accounts for whole composite fiber membrane material
20-30%.
The mass ratio of montmorillonite and S Sodium Polyacrylates is 1 in the mixture of montmorillonite and the S Sodium Polyacrylate:2.5
Addition is 30ppm；The mass ratio of bleaching powder and dichlormaine is 1 in the mixture of the bleaching powder and dichlormaine:2.5, addition
Measure as the 0.1% of industrial wastewater quality.
Industrial wastewater internal oxygen concentration when by one-level Aerobic Pond is 3mg/L, and hydraulic detention time is 7 hours；Work
Industry waste water internal oxygen concentration when by two level aerobic aeration pond is 5mg/L, and hydraulic detention time is 7 hours.
Industrial wastewater internal oxygen concentration when by one-level anaerobism aeration tank is 0.05mg/L, hydraulic detention time 14
Hour；Industrial wastewater internal oxygen concentration when by secondary anaerobic aeration tank is 0.03mg/L, and hydraulic detention time is 12 small
When.
The aperture of first layer composite cellulosic membrane in the three-level composite fiber membrane material is 0.008 micron, and the second layer is multiple
The aperture of condensating fiber film is 0.005 micron, and the aperture of third layer composite cellulosic membrane is 0.001 micron.
Aeration and diaphragm aerating pipelines connect with air blower in the facultative aerobic membrane bioreactor, supporting collection on membrane module
Water pipe connects with self priming pump, and pending sewage enters this and oxygen film biology by the water inlet of facultative aerobic membrane bioreactor side
In reactor, by antipollution plate film assembly, then it is pumped out by self-priming into clear water sterilization pool, described and oxygen membrane bioreaction
The side of device bottom is answered to offer evacuation port.
The preparation method of the three-level composite fiber membrane material is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 5：1 is mixed
Conjunction is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution uniformly mixing and are stirred on magnetic stirring apparatus 8
Hour obtains precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 23kV carries out electrostatic spinning, and received by roller
Collection, roller is away from nozzle distance 25cm, and setting speed is 180r/min, and spinning obtains precursor fibre film after terminating；
C. after precursor fibre film being pre-processed into 5.5-6 hours at 250 DEG C in Muffle furnace, it is placed between two pieces of graphite cakes,
The roasting 5-7 hours at 780 DEG C are put into argon gas atmosphere stove, obtain the composite fiber membrane material of nanostructured.
Embodiment 3
A kind of process for treating industrial waste water, it comprises the following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 15min, then are carried out at sedimentation
Reason, the time of settlement treatment be 20min, then by electric flocculating high pressure water purifier to waste water progress flotation, duration 8min,
Obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 30min, then adjusted its pH to 6.5 with NaOH, i.e., the Industry Waste after adjusted pH-value
Water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 4000mg/L, and it is 7.5 hours to make facultative aerobic membrane bioreactor hydraulic detention time, then adds reducing agent, is used
Activated carbon filtering technique carries out filtration treatment, then carries out settlement treatment, and the settlement treatment time is 35min, that is, after being filtered
Industrial wastewater；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater using three-level composite fiber membrane material carry out filtration treatment, so
Advanced oxidation processing is carried out afterwards, wherein adding the mixture of ferrous ion and hydrogen peroxide, regulation pH value is 4, you can is accorded with
Close the discharge water of environmental protection standard；The three-level composite fiber membrane material shares three layers, and every layer of material is by di-iron trioxide, titanium dioxide
The porous fibre composition that titanium, activated carbon three-phase are formed, the thickness of composite cellulosic membrane is 130 microns, porosity 75%, nanometer three
Aoxidize two iron and form nanometer in the surface of porous activated carbon fiber or skeleton with the uniform growth in situ of nano titanium oxide and answer
Close the mol ratio 3 of structure, di-iron trioxide and titanium dioxide：1, quality of activated carbon content accounts for whole composite fiber membrane material
25%.
The mass ratio of montmorillonite and S Sodium Polyacrylates is 1 in the mixture of montmorillonite and the S Sodium Polyacrylate:2.3
Addition is 40ppm；The mass ratio of bleaching powder and dichlormaine is 1 in the mixture of the bleaching powder and dichlormaine:2.4, addition
Measure as the 0.15% of industrial wastewater quality.
Industrial wastewater internal oxygen concentration when by one-level Aerobic Pond is 4mg/L, and hydraulic detention time is 6 hours；Work
Industry waste water internal oxygen concentration when by two level aerobic aeration pond is 6mg/L, and hydraulic detention time is 6.5 hours.
Industrial wastewater internal oxygen concentration when by one-level anaerobism aeration tank is 0.08mg/L, hydraulic detention time 13
Hour；Industrial wastewater internal oxygen concentration when by secondary anaerobic aeration tank is 0.06mg/L, and hydraulic detention time is 11 small
When.
The aperture of first layer composite cellulosic membrane in the three-level composite fiber membrane material is 0.009 micron, and the second layer is multiple
The aperture of condensating fiber film is 0.0034 micron, and the aperture of third layer composite cellulosic membrane is 0.0015 micron.
Aeration and diaphragm aerating pipelines connect with air blower in the facultative aerobic membrane bioreactor, supporting collection on membrane module
Water pipe connects with self priming pump, and pending sewage enters this and oxygen film biology by the water inlet of facultative aerobic membrane bioreactor side
In reactor, by antipollution plate film assembly, then it is pumped out by self-priming into clear water sterilization pool, described and oxygen membrane bioreaction
The side of device bottom is answered to offer evacuation port.
The preparation method of the three-level composite fiber membrane material is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 4：1 is mixed
Conjunction is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution uniformly mixing and are stirred on magnetic stirring apparatus 9
Hour obtains precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 22.5kV carries out electrostatic spinning, and carried out by roller
Collect, roller is away from nozzle distance 26cm, and setting speed is 170r/min, and spinning obtains precursor fibre film after terminating；
C. after precursor fibre film is pre-processed 5.8 hours in Muffle furnace at 255 DEG C, it is placed between two pieces of graphite cakes, puts
Enter in argon gas atmosphere stove and be calcined 6 hours at 750 DEG C, obtain the composite fiber membrane material of nanostructured.
Embodiment 4
A kind of process for treating industrial waste water, it comprises the following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 13-18min, then are settled
Processing, the time of settlement treatment is 15-25min, then is to waste water progress flotation, duration by electric flocculating high pressure water purifier
5-10min, that is, obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 20-40min, then adjusted its pH to 6-7 with NaOH, i.e., the work after adjusted pH-value
Industry waste water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 3500-4500mg/L, and it is 7-8 hours to make facultative aerobic membrane bioreactor hydraulic detention time, then adds reducing agent,
Filtration treatment is carried out using activated carbon filtering technique, then carries out settlement treatment, the settlement treatment time is 30-40min, that is, is obtained
Industrial wastewater after filter；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater carry out resin adsorption, then using three-level composite fiber membrane material
Filtration treatment is carried out, then carries out advanced oxidation processing, wherein adding the mixture of ferrous ion and hydrogen peroxide, adjusts pH value
For 3.5-4.5, handled finally by two steps ro membrane component, obtain treatment fluid, then be evaporated concentration, the evaporation
The temperature of concentration is 90-100 DEG C, obtains steam and concentrate；The steam is condensed, and condensed water is reclaimed, you can
To the discharge water for meeting environmental protection standard；The concentrate is dehydrated, and the mode of dehydration is low-temperature evaporation, the low-temperature evaporation
Temperature is 60-70 DEG C, obtains solid slag.The three-level composite fiber membrane material shares three layers, and every layer of material is by di-iron trioxide, two
The porous fibre composition that titanium oxide, activated carbon three-phase are formed, the thickness of composite cellulosic membrane are 100-150 microns, porosity 70-
80%, nanometer di-iron trioxide is with the uniform growth in situ of nano titanium oxide in the surface of porous activated carbon fiber or skeleton
Form the mol ratio 1 of nano composite structure, di-iron trioxide and titanium dioxide：5-5：1, quality of activated carbon content accounts for whole compound
The 20-30% of fiber film material.
The mass ratio of montmorillonite and S Sodium Polyacrylates is 1 in the mixture of montmorillonite and the S Sodium Polyacrylate:2-
2.5, addition 30-50ppm；The mass ratio of bleaching powder and dichlormaine is 1 in the mixture of the bleaching powder and dichlormaine:2-
2.5, addition is the 0.1%-0.2% of industrial wastewater quality.
Industrial wastewater internal oxygen concentration when by one-level Aerobic Pond is 3-5mg/L, and hydraulic detention time is that 5-7 is small
When；Industrial wastewater internal oxygen concentration when by two level aerobic aeration pond is 5-7mg/L, and hydraulic detention time is 6-7 hours.
Industrial wastewater internal oxygen concentration when by one-level anaerobism aeration tank is 0.05-0.1mg/L, hydraulic detention time
For 10-14 hours；Industrial wastewater internal oxygen concentration when by secondary anaerobic aeration tank is 0.03-0.08mg/L, and waterpower is stopped
It is 10-12 hours to stay the time.
The aperture of first layer composite cellulosic membrane in the three-level composite fiber membrane material is 0.008-0.01 microns, second
The aperture of layer composite cellulosic membrane is 0.003-0.005 microns, and the aperture of third layer composite cellulosic membrane is 0.001-0.002 microns.
Aeration and diaphragm aerating pipelines connect with air blower in the facultative aerobic membrane bioreactor, supporting collection on membrane module
Water pipe connects with self priming pump, and pending sewage enters this and oxygen film biology by the water inlet of facultative aerobic membrane bioreactor side
In reactor, by antipollution plate film assembly, then it is pumped out by self-priming into clear water sterilization pool, described and oxygen membrane bioreaction
The side of device bottom is answered to offer evacuation port.
The preparation method of the three-level composite fiber membrane material is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 1：5-
5：1 mixing is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution are uniformly mixed and on magnetic stirring apparatus
Stirring 8-10 hours obtain precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 22-23kV carries out electrostatic spinning, and carried out by roller
Collect, roller is away from nozzle distance 25-28cm, and setting speed is 160-180r/min, and spinning obtains precursor fibre after terminating
Film；
C. by precursor fibre film in Muffle furnace at 250-260 DEG C pre-process 5.5-6 hours after, be placed in two pieces of graphite cakes it
Between, the roasting 5-7 hours at 720-780 DEG C are put into argon gas atmosphere stove, obtain the composite fiber membrane material of nanostructured.
The process for treating industrial waste water of the present invention can realize effective processing, the reuse of industrial wastewater, and thoroughly solve
Waste Water Treatment end organic matter can not degrade, the problem of making its operational effect poor, unstable, thus be it is a kind of efficiently, it is steady
Fixed method of wastewater treatment.
The processing method of the present invention causes the total removal rate of waste water COD to be more than 99%, and water outlet COD value is less than 30mg/L.Go out
Water stably reaching standard, construction investment are small, operating cost is cheap, recyclable biomass energy, management are simple, and being easy to engineering to promote should
With providing new technological approaches for industrial wastewater treatment.
Operational effect of the invention is good, reliability is high, stable effluent quality.When handling trade effluent, anti impulsion load,
It is strong to contaminant removal efficiency height, nitrification ability.Have the function of denitrogenation dephosphorizing concurrently, be especially suitable for handling industrial wastewater, city dirt
Water etc., water outlet can with reuse can also direct qualified discharge, disclosure satisfy that the demand of the different quality of different user.
There is sterilizing to act on to industrial wastewater and effectively can remove in water outlet for the processing method of the present invention
Heavy metal ion, secondary pollution problem caused by not only overcoming but also reduces the heavy metal concentration of water outlet, makes the water quality of recycle-water
Greatly improve.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (7)
1. a kind of process for treating industrial waste water, it is characterised in that comprise the following steps：
（1）Pre-filtering and preformed precipitate
Pending industrial wastewater is first flowed through into multiple grid, the grid gap of the multiple grid is gradually reduced, and then drains into sedimentation
Pond, the mixture for adding montmorillonite and S Sodium Polyacrylates are flocculated, and are blown into air and are continued 13-18min, then are settled
Processing, the time of settlement treatment is 15-25min, then is to waste water progress flotation, duration by electric flocculating high pressure water purifier
5-10min, that is, obtain the supernatant of industrial wastewater；
（2）Sterilization and acid-base value regulation
By step（1）Described in industrial wastewater supernatant be discharged into acid-base accommodation pond, first with bleaching powder and the mixture of dichlormaine
Carry out disinfection, be stirred for mixing 20-40min, then adjusted its pH to 6-7 with NaOH, i.e., the work after adjusted pH-value
Industry waste water；
（3）Go the removal of impurity and secondary filter
By step（2）Described in regulation pH-value after industrial wastewater be first passed through one-level anaerobism aeration tank, utilize anaerobic bacteria point
Macromolecular carbon source material and macromolecular nitrogen source therein are solved, then is passed through secondary anaerobic aeration tank, it is decomposed using anaerobic bacteria
In middle molecule carbon source material and middle molecule nitrogen source, one-level Aerobic Pond is then passed to, using in aerobic bacteria Decomposition Wastewater
Small molecule carbon source material and small molecule nitrogen source, then two level aerobic aeration pond is passed through, decompose differential therein using anaerobic bacteria
Sub- carbon source material and scintilla nitrogen source, the waste water from Aerobic Pond outflow finally is handled using facultative aerobic membrane bioreactor, should
Installing immersed type flat plate membrane component in facultative aerobic membrane bioreactor, control the activity in the reaction zone of facultative aerobic membrane bioreactor dirty
Mud concentration is 3500-4500mg/L, and it is 7-8 hours to make facultative aerobic membrane bioreactor hydraulic detention time, then adds reducing agent,
Filtration treatment is carried out using activated carbon filtering technique, then carries out settlement treatment, the settlement treatment time is 30-40min, that is, is obtained
Industrial wastewater after filter；
（4）Fine filtering
First by step（3）Described in filtering after industrial wastewater using three-level composite fiber membrane material carry out filtration treatment, so
Advanced oxidation processing is carried out afterwards, wherein adding the mixture of ferrous ion and hydrogen peroxide, regulation pH value is 3.5-4.5, you can
Obtain the discharge water for meeting environmental protection standard；The three-level composite fiber membrane material shares three layers, every layer of material by di-iron trioxide,
The porous fibre composition that titanium dioxide, activated carbon three-phase are formed, the thickness of composite cellulosic membrane is 100-150 microns, and porosity is
70-80%, nanometer di-iron trioxide is with the uniform growth in situ of nano titanium oxide in the surface of porous activated carbon fiber or bone
The mol ratio 1 of nano composite structure, di-iron trioxide and titanium dioxide is formed in frame：5-5：1, quality of activated carbon content accounts for entirely
The 20-30% of composite fiber membrane material.
2. process for treating industrial waste water according to claim 1, it is characterised in that montmorillonite and the S Sodium Polyacrylate
Mixture in the mass ratio of montmorillonite and S Sodium Polyacrylates be 1:2-2.5, addition 30-50ppm；The bleaching powder and
The mass ratio of bleaching powder and dichlormaine is 1 in the mixture of dichlormaine:2-2.5, addition are the 0.1%- of industrial wastewater quality
0.2%。
3. process for treating industrial waste water according to claim 1 or 2, it is characterised in that industrial wastewater is good by one-level
Internal oxygen concentration is 3-5mg/L during oxygen pond, and hydraulic detention time is 5-7 hours；Industrial wastewater is passing through two level aerobic aeration
Internal oxygen concentration is 5-7mg/L during pond, and hydraulic detention time is 6-7 hours.
4. process for treating industrial waste water according to claim 3, it is characterised in that industrial wastewater exposes by one-level anaerobism
Internal oxygen concentration is 0.05-0.1mg/L during gas pond, and hydraulic detention time is 10-14 hours；Industrial wastewater is detested by two level
Internal oxygen concentration is 0.03-0.08mg/L during oxygen aeration tank, and hydraulic detention time is 10-12 hours.
5. process for treating industrial waste water according to claim 4, it is characterised in that in the three-level composite fiber membrane material
The aperture of first layer composite cellulosic membrane be 0.008-0.01 microns, the aperture of second layer composite cellulosic membrane is 0.003-0.005
Micron, the aperture of third layer composite cellulosic membrane is 0.001-0.002 microns.
6. the process for treating industrial waste water according to claim 4 or 5, it is characterised in that the facultative aerobic membrane bioreactor
Interior aeration and diaphragm aerating pipelines connect with air blower, and supporting collector pipe connects with self priming pump on membrane module, pending dirt
Water is entered in the facultative aerobic membrane bioreactor by the water inlet of facultative aerobic membrane bioreactor side, passes through antipollution Flat Membrane group
Part, then it is pumped out by self-priming into clear water sterilization pool, the side of the facultative aerobic membrane bioreactor bottom and offers evacuation port.
7. process for treating industrial waste water according to claim 6, it is characterised in that the three-level composite fiber membrane material
Preparation method is as follows：
A. by as monomers acrylonitrile through Raolical polymerizable obtained by product in mass ratio 1:8 ratio is dissolved in N, N- diformazans
In base formamide DMF solution, it is sufficiently stirred to form vitreosol；Meanwhile by positive butyl titanate and ferric nitrate in molar ratio 1：5-
5：1 mixing is dissolved in DMF solution, is sufficiently stirred to form clear solution；Two kinds of solution are uniformly mixed and on magnetic stirring apparatus
Stirring 8-10 hours obtain precursor sol；
B. precursor sol is injected in syringe, and the voltage for applying 22-23kV carries out electrostatic spinning, and carried out by roller
Collect, roller is away from nozzle distance 25-28cm, and setting speed is 160-180r/min, and spinning obtains precursor fibre after terminating
Film；
C. by precursor fibre film in Muffle furnace at 250-260 DEG C pre-process 5.5-6 hours after, be placed in two pieces of graphite cakes it
Between, the roasting 5-7 hours at 720-780 DEG C are put into argon gas atmosphere stove, obtain the composite fiber membrane material of nanostructured.
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| CN110734188A (en) * | 2018-07-18 | 2020-01-31 | 上海明勃电气自动化有限公司 | waste water zero release processing system |
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Application publication date: 20180223 |