CN106587334A - Self-cleaning biotrickling filter and application thereof to emulsion waste water treatment - Google Patents
Self-cleaning biotrickling filter and application thereof to emulsion waste water treatment Download PDFInfo
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- CN106587334A CN106587334A CN201611259308.3A CN201611259308A CN106587334A CN 106587334 A CN106587334 A CN 106587334A CN 201611259308 A CN201611259308 A CN 201611259308A CN 106587334 A CN106587334 A CN 106587334A
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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
- C02F3/04—Aerobic processes using trickle filters
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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
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
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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
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/106—Carbonaceous materials
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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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/325—Emulsions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Hydrology & Water Resources (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention relates to a self-cleaning biotrickling filter and application thereof to emulsion waste water treatment, and belongs to the technical field of water treatment. The invention provides novel padding with the surface and the interiors of channels hydrophobized to solve the problems that biological metabolic products are prone to blocking conventional padding and the biological reaction efficiency is decreased when the conventional padding loaded with microorganisms is applied to the biotrickling filter, and after the padding is applied to the biotrickling filter, pollutants and biological metabolic products accumulated on the surface of the padding can be effectively taken away along with fluid, and deposition on the surface of the padding is reduced, so that the biotrickling filter operates with high operation efficiency all the time. The biotrickling filter can be applied to a biological treatment process of emulsion waste water.
Description
Technical field
The present invention relates to a kind of self-cleaning bio-trickling filter and its application in emulsifying liquid waste water process, belong at water
Reason technical field.
Background technology
Oil, the mixing and emulsifying of water all exists in many industrial process, is mutual with liquid by oil molecule and hydrone
A kind of phenomenon for containing.Emulsifying wastewater has in industrial processes very big harm, so entering to emulsifying wastewater
Row oil, water separating treatment (also referred to as breakdown of emulsion process) are imperative.
Waste water and air can be carried out by biological respinse on inner-tower filling material using bio-trickling filter, with degrading waste water
The materials such as COD, but because microorganism can produce a large amount of metabolites, cell debriss etc., long-play in reproductive process
Afterwards, dropping liquid is not easy from filler surface to remove metabolite, has had influence on longtime running stability.
The content of the invention
The present invention is being applied to biological generation present in bio-trickling filter for the filler for solving conventional loading microorganisms
Thank to product and be easily caused the problems such as filler is blocked, biological respinse efficiency declines, it is proposed that dredge in a kind of new surface and duct
The filler of aquation, by the applying filler after bio-trickling filter, can effectively make pollutant and the life of filler surface accumulation
Thing metabolite is taken away with fluid, alleviates filler surface deposition, drop filter tower is maintained at all the time under higher operational efficiency.The drop
Filter tower can apply in the biological treatment of emulsion.
Technical scheme is：
A kind of self-cleaning bio-trickling filter, includes filler tower body 1, the top of filler tower body 1 connection waste water tank 2, filler tower body 1
Lower section be connected with source of the gas 3, the inside of filler tower body 1 be filled with filler 4, described filler refer to it is with loose structure,
And surface is hydrophobic porous aggregate.
Described hydrophobicity refers to that contact angle of the water on surface is more than 120 °.
Described loose structure refers to 5～50m of specific surface area2/g。
Outlet port 5 is additionally provided with the top of filler tower body 1, in bottom scavenging solution outlet 7 is additionally provided with.
Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 120～180 parts of the fine powder obtained after is crushed petroleum coke, pore creating material
15～25 parts of alcohols solvents with 25～40 parts are mixed homogeneously, and then mixture is placed in tube furnace, in the gas of noble gases
Under atmosphere, intensification carbonization after letting cool, then with pure water to neutrality, after drying, is ground, and obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 25～55 parts of filler matrix and 40～45 parts of SOCl2
Carry out 4～6h of back flow reaction under the conditions of 55～75 DEG C, after reaction terminates, solidss leached, be redispersed in alcohols solvent 35～
In 55 parts, in 105～115 DEG C of 15～20h of back flow reaction, after reaction terminates, solidss are leached, be washed with deionized, do
It is dry, obtain the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 15～35 parts of filler matrix, tetraethyl orthosilicate surface hydroxyl modified
10～25 parts add into 50～100 parts of ethanol with 3～5 parts of silane coupler, add ammonia and adjust pH to 8～10, carry out
Reaction, reaction is aged after terminating, and ageing carries out under agitation again concentrating under reduced pressure after terminating, until reaction mass volume is original
50～60% for coming, solidss are leached, and in ethanol after immersion, cleaning, drying, obtain functionalization filler；
4th step, the hydrophobization of filler：By weight, by 20～30 parts of functionalization filler, 25～30 parts of hydrophobic polymer, molten
50～80 parts of mix homogeneously of agent, are warming up to 40～50 DEG C of 1～3h of backflow, concentrating under reduced pressure, until reaction mass volume is original
55～65%, solidss are leached, in ethanol after immersion, cleaning, drying, obtain hydrophobization filler.
In the 1st described step, pore creating material refers to starch, polyvinyl alcohol, cellulose, carbamide, one kind of Polyethylene Glycol or many
Kind.
In the 1st described step, 1～3 DEG C/min of carbonization heating rate, 950～1050 DEG C of carbonization temperature, carbonization time 2～4
Hour.
In described the 1st step and the 2nd step, alcohols solvent is in methanol, ethanol, Propylene Glycol, glycerol or butanol
One or more.
In the 3rd described step, reaction temperature is 50～65 DEG C, and the response time is 2～6h, and Aging Temperature is 15～20 DEG C,
Digestion time is 12～24h；Silane coupler is selected from for double-(γ-triethoxy silicon substrate propyl group) tetrasulfide (Si69), double
(triethoxy silicon substrate propyl group) disulphide (Si75), gamma-mercaptopropyltriethoxysilane (KH-580), the second of γ-aminopropyl three
One or more in TMOS (KH-550), γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane (KH-560).
In the 4th described step, hydrophobic polymer is Kynoar, poly- (biasfluoroethylene-hexafluoropropylene), the poly- carbonic acid of fluorination
One kind in ester, polystyrene or poly- (styrene-b- dimethyl siloxanes).
Emulsion waste water treatment process, comprises the steps：
S1, the load of strain：Secondary sedimentation tank of sewage treatment work activated sludge is taken, by sludge according to solid-to-liquid ratio 1：5～10 mix with water,
The carbon source of water weight 2～4% and 1～5% nitrogen source are added, after mix homogeneously, centrifugation takes clear liquid；By clear liquid with it is hydrophobic
Change filler according to weight than 2～4：1 mixing, vacuumizing and defoaming process, then pour the mixture in filler tower body 1；
S2, biochemical reaction：Emulsifying liquid waste water is slowly dropped in tower from tower top, then by air from bottom of towe infeed tower, keeps tower
Interior temperature is between 25～35 DEG C；
S3, water treatment：The feed liquid that bottom of towe is obtained is purified water after flocculation, sedimentation, ultrafiltration.
In the 1st described step, carbon source preferably uses such as glucose, sucrose, Fructose, galactose, Lactose and maltose
Deng saccharide；Nitrogen source can use such as ammonia, ammonia, ammonium salt class, carbamide, Nitrateses, meat extract, peptone etc..
In the 2nd described step, emulsifying liquid waste water is the emulsifying liquid waste water of machining industry, waste water COD content is 80000～
120000ppm。
In the 3rd described step, flocculant is aluminium polychlorid, and ultrafilter membrane adopts pvdf membrane, and molecular cut off scope is 50,000
～10 ten thousand.
Description of the drawings
Fig. 1 is the structural representation of the bio-trickling filter that the present invention is provided.Fig. 2 is ultrafilter membrane in embodiment and reference examples
Filtration flux changes over figure.
Wherein, 1, filler tower body；2nd, waste water tank；3rd, source of the gas；4th, filler；5th, outlet port；6th, scavenging solution outlet；7、
Liquid distribution trough.
Specific embodiment
Embodiment 1
Self-cleaning bio-trickling filter as shown in Figure 1, includes filler tower body 1, and connection waste water tank 2 in the top of filler tower body 1 is filled out
The lower section of material tower body 1 is connected with source of the gas 3, and in the inside of filler tower body 1 filler 4 is filled with, and described filler is referred to porous
Structure and surface be hydrophobic porous aggregate；Outlet port 5 is additionally provided with the top of filler tower body 1, in bottom also
It is provided with scavenging solution outlet 7；Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 120 parts of the fine powder obtained after is crushed petroleum coke, pore creating material starch
15 parts of ethanol with 25 parts are mixed homogeneously, and then mixture is placed in tube furnace, under the atmosphere of noble gases, intensification charcoal
Change, 1 DEG C/min of carbonization heating rate, 950 DEG C of carbonization temperature, carbonization time 2 hours, after letting cool, then with pure water to neutrality,
After drying, it is ground, obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 25 parts of filler matrix and 40 parts of SOCl2In 55 DEG C of conditions
Under carry out back flow reaction 4h, after reaction terminates, solidss are leached, in being redispersed in 35 parts of ethanol, in 105 DEG C of back flow reaction
15h, after reaction terminates, solidss is leached, and is washed with deionized, is dried, and obtains the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 15 parts of filler matrix, 10 parts of tetraethyl orthosilicate surface hydroxyl modified
3 parts add into 50 parts of ethanol with KH-560 silane couplers, add ammonia and adjust pH to 8, are reacted, and reaction temperature is
50 DEG C, the response time is 2h, and reaction is aged after terminating, and Aging Temperature is 15 DEG C, and digestion time is 12h, after ageing terminates
Carry out concentrating under reduced pressure under agitation again, until reaction mass volume is original 50%, solidss are leached, soak in ethanol,
After cleaning, drying, functionalization filler is obtained；
4th step, the hydrophobization of filler：By weight, 20 parts of functionalization filler, 25 parts of Kynoar, 50 parts of solvent are mixed
Close uniform, be warming up to 40 DEG C of backflow 1h, concentrating under reduced pressure, until reaction mass volume is original 55%, solidss is leached,
In ethanol after immersion, cleaning, drying, hydrophobization filler is obtained；Specific surface area 5m of filler2/ g, contact angle of the water on surface
135°。
Embodiment 2
Self-cleaning bio-trickling filter as shown in Figure 1, includes filler tower body 1, and connection waste water tank 2 in the top of filler tower body 1 is filled out
The lower section of material tower body 1 is connected with source of the gas 3, and in the inside of filler tower body 1 filler 4 is filled with, and described filler is referred to porous
Structure and surface be hydrophobic porous aggregate；Outlet port 5 is additionally provided with the top of filler tower body 1, in bottom also
It is provided with scavenging solution outlet 7；Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 180 parts of the fine powder obtained after is crushed petroleum coke, pore creating material starch
25 parts of ethanol with 40 parts are mixed homogeneously, and then mixture is placed in tube furnace, under the atmosphere of noble gases, intensification charcoal
Change, 3 DEG C/min of carbonization heating rate, 1050 DEG C of carbonization temperature, carbonization time 4 hours, after letting cool, then with pure water into
Property, after drying, it is ground, obtain filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 55 parts of filler matrix and 45 parts of SOCl2In 75 DEG C of conditions
Under carry out back flow reaction 6h, after reaction terminates, solidss are leached, in being redispersed in 55 parts of ethanol, in 115 DEG C of back flow reaction
20h, after reaction terminates, solidss is leached, and is washed with deionized, is dried, and obtains the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 35 parts of filler matrix, 25 parts of tetraethyl orthosilicate surface hydroxyl modified
5 parts add into 100 parts of ethanol with KH-560 silane couplers, add ammonia and adjust pH to 10, are reacted, reaction temperature
It it is 65 DEG C, the response time is 6h, reaction is aged after terminating, and Aging Temperature is 20 DEG C, and digestion time is 24h, and ageing terminates
Carry out concentrating under reduced pressure under agitation again afterwards, until reaction mass volume is original 60%, solidss are leached, soak in ethanol
After bubble, cleaning, drying, functionalization filler is obtained；
4th step, the hydrophobization of filler：By weight, 30 parts of functionalization filler, 30 parts of Kynoar, 80 parts of solvent are mixed
Close uniform, be warming up to 50 DEG C of backflow 3h, concentrating under reduced pressure, until reaction mass volume is original 65%, solidss is leached,
In ethanol after immersion, cleaning, drying, hydrophobization filler is obtained；Specific surface area 50m of filler2/ g, contact angle of the water on surface
145°。
Embodiment 3
Self-cleaning bio-trickling filter as shown in Figure 1, includes filler tower body 1, and connection waste water tank 2 in the top of filler tower body 1 is filled out
The lower section of material tower body 1 is connected with source of the gas 3, and in the inside of filler tower body 1 filler 4 is filled with, and described filler is referred to porous
Structure and surface be hydrophobic porous aggregate；Outlet port 5 is additionally provided with the top of filler tower body 1, in bottom also
It is provided with scavenging solution outlet 7；Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 160 parts of the fine powder obtained after is crushed petroleum coke, pore creating material starch
22 parts of ethanol with 32 parts are mixed homogeneously, and then mixture is placed in tube furnace, under the atmosphere of noble gases, intensification charcoal
Change, 2 DEG C/min of carbonization heating rate, 980 DEG C of carbonization temperature, carbonization time 3 hours, after letting cool, then with pure water to neutrality,
After drying, it is ground, obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 30 parts of filler matrix and 42 parts of SOCl2In 66 DEG C of conditions
Under carry out back flow reaction 5h, after reaction terminates, solidss are leached, in being redispersed in 45 parts of ethanol, in 110 DEG C of back flow reaction
18h, after reaction terminates, solidss is leached, and is washed with deionized, is dried, and obtains the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 20 parts of filler matrix, 23 parts of tetraethyl orthosilicate surface hydroxyl modified
4 parts add into 70 parts of ethanol with KH-560 silane couplers, add ammonia and adjust pH to 9, are reacted, and reaction temperature is
55 DEG C, the response time is 5h, and reaction is aged after terminating, and Aging Temperature is 17 DEG C, and digestion time is 22h, after ageing terminates
Carry out concentrating under reduced pressure under agitation again, until reaction mass volume is original 55%, solidss are leached, soak in ethanol,
After cleaning, drying, functionalization filler is obtained；
4th step, the hydrophobization of filler：By weight, 25 parts of functionalization filler, 27 parts of Kynoar, 70 parts of solvent are mixed
Close uniform, be warming up to 45 DEG C of backflow 2h, concentrating under reduced pressure, until reaction mass volume is original 60%, solidss is leached,
In ethanol after immersion, cleaning, drying, hydrophobization filler is obtained；Specific surface area 40m of filler2/ g, contact angle of the water on surface
139°。
Reference examples 1
It is with the difference of embodiment 3：Filler is without silicic acid anhydride.
Self-cleaning bio-trickling filter as shown in Figure 1, includes filler tower body 1, the top of filler tower body 1 connection waste water tank
2, the lower section of filler tower body 1 is connected with source of the gas 3, and in the inside of filler tower body 1 filler 4 is filled with, and described filler refers to have
The functionalization filler of loose structure；Outlet port 5 is additionally provided with the top of filler tower body 1, in bottom purification is additionally provided with
Liquid outlet 7；Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 160 parts of the fine powder obtained after is crushed petroleum coke, pore creating material starch
22 parts of ethanol with 32 parts are mixed homogeneously, and then mixture is placed in tube furnace, under the atmosphere of noble gases, intensification charcoal
Change, 2 DEG C/min of carbonization heating rate, 980 DEG C of carbonization temperature, carbonization time 3 hours, after letting cool, then with pure water to neutrality,
After drying, it is ground, obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 30 parts of filler matrix and 42 parts of SOCl2In 66 DEG C of conditions
Under carry out back flow reaction 5h, after reaction terminates, solidss are leached, in being redispersed in 45 parts of ethanol, in 110 DEG C of back flow reaction
18h, after reaction terminates, solidss is leached, and is washed with deionized, is dried, and obtains the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 20 parts of filler matrix, 23 parts of tetraethyl orthosilicate surface hydroxyl modified
4 parts add into 70 parts of ethanol with KH-560 silane couplers, add ammonia and adjust pH to 9, are reacted, and reaction temperature is
55 DEG C, the response time is 5h, and reaction is aged after terminating, and Aging Temperature is 17 DEG C, and digestion time is 22h, after ageing terminates
Carry out concentrating under reduced pressure under agitation again, until reaction mass volume is original 55%, solidss are leached, soak in ethanol,
After cleaning, drying, functionalization filler is obtained；Specific surface area 40m of filler2/ g, contact angle 26 ° of the water on surface.
Reference examples 2
It is with the difference of embodiment 3：In the 2nd step surface hydroxylation process is not carried out in the preparation of filler.
Self-cleaning bio-trickling filter as shown in Figure 1, includes filler tower body 1, the top of filler tower body 1 connection waste water tank
2, the lower section of filler tower body 1 is connected with source of the gas 3, and in the inside of filler tower body 1 filler 4 is filled with, and described filler refers to have
Loose structure and surface be hydrophobic porous aggregate；Outlet port 5 is additionally provided with the top of filler tower body 1, under
Portion is additionally provided with scavenging solution outlet 7；Liquid distribution trough 7 is also included, for being distributed to the waste water entered from tower top.
The preparation method of described filler, comprises the steps：
1st step, the preparation of filler matrix：By weight, 160 parts of the fine powder obtained after is crushed petroleum coke, pore creating material starch
22 parts of ethanol with 32 parts are mixed homogeneously, and then mixture is placed in tube furnace, under the atmosphere of noble gases, intensification charcoal
Change, 2 DEG C/min of carbonization heating rate, 980 DEG C of carbonization temperature, carbonization time 3 hours, after letting cool, then with pure water to neutrality,
After drying, it is ground, obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 30 parts of filler matrix and 42 parts of SOCl2In 66 DEG C of conditions
Under carry out back flow reaction 5h, after reaction terminates, solidss are leached, in being redispersed in 45 parts of ethanol, in 110 DEG C of back flow reaction
18h, after reaction terminates, solidss is leached, and is washed with deionized, is dried, and obtains the filler matrix of surface hydroxyl modification；
3rd step, the hydrophobization of filler：By weight, it is 25 parts of filler surface hydroxyl being modified, 27 parts of Kynoar, molten
70 parts of mix homogeneously of agent, are warming up to 45 DEG C of backflow 2h, concentrating under reduced pressure, until reaction mass volume is original 60%, by solidss
Leach, in ethanol after immersion, cleaning, drying, obtain hydrophobization filler；Specific surface area 40m of filler2/ g, water is on surface
112 ° of contact angle.
Wastewater treatment test
Emulsion waste water treatment process, comprises the steps：
S1, the load of strain：Secondary sedimentation tank of sewage treatment work activated sludge is taken, by sludge according to solid-to-liquid ratio 1：8 mix with water, then add
Enter the glucose of water weight 3 and 3% carbamide, after mix homogeneously, centrifugation takes clear liquid；By clear liquid and above-described embodiment and right
The filler for preparing as usual compares 3 according to weight：1 mixing, vacuumizing and defoaming process, then pour the mixture in filler tower body 1；
S2, biochemical reaction：The emulsifying liquid waste water of machining industry is slowly dropped in tower from tower top, waste water COD content is 80000
～120000ppm, then by air from bottom of towe infeed tower, temperature is at 32 DEG C in holding tower；
S3, water treatment：The feed liquid that bottom of towe is obtained obtains net after polyaluminium aluminum flocculation, sedimentation, pvdf membrane ultrafiltration
Change water.
The flux of ultrafilter membrane is as shown in the table after product water COD, the operation 10h of the waste water COD, ultrafilter membrane into ultrafilter membrane：
The operating flux of ultrafilter membrane is as shown in Figure 2.Can be seen that by upper table and Fig. 2 carries out waste water using the filler of hydrophobization
During process, the flux decline situation of ultrafilter membrane is less, and the waste water COD into ultrafilter membrane is less, illustrates to employ filling out for hydrophobization
After material, biological respinse efficiency can be effectively improved, reduce COD, prevent fouling membrane.
Claims (10)
1. a kind of self-cleaning bio-trickling filter, it is characterised in that include filler tower body（1）, filler tower body（1）Top connects
Waste water tank（2）, filler tower body（1）Lower section be connected with source of the gas（3）, in filler tower body（1）Inside be filled with filler（4）, institute
The filler stated refers to that with loose structure and surface is hydrophobic porous aggregate.
2. self-cleaning bio-trickling filter according to claim 1, it is characterised in that described hydrophobicity refers to water in table
The contact angle in face is more than 120 °；Described loose structure refers to 5～50m of specific surface area2/g。
3. self-cleaning bio-trickling filter according to claim 1, it is characterised in that in filler tower body（1）Top also
It is provided with outlet port（5）, in bottom scavenging solution outlet is additionally provided with（7）；Also include liquid distribution trough（7）, it is used for
Waste water to entering from tower top is distributed.
4. self-cleaning bio-trickling filter according to claim 1, it is characterised in that the preparation method of described filler,
Comprise the steps：
1st step, the preparation of filler matrix：By weight, 120～180 parts of the fine powder obtained after is crushed petroleum coke, pore creating material
15～25 parts of alcohols solvents with 25～40 parts are mixed homogeneously, and then mixture is placed in tube furnace, in the gas of noble gases
Under atmosphere, intensification carbonization after letting cool, then with pure water to neutrality, after drying, is ground, and obtains filler matrix；
2nd step, the surface hydroxylation of filler matrix：By weight, by 25～55 parts of filler matrix and 40～45 parts of SOCl2
Carry out 4～6h of back flow reaction under the conditions of 55～75 DEG C, after reaction terminates, solidss leached, be redispersed in alcohols solvent 35～
In 55 parts, in 105～115 DEG C of 15～20h of back flow reaction, after reaction terminates, solidss are leached, be washed with deionized, do
It is dry, obtain the filler matrix of surface hydroxyl modification；
3rd step, the functionalization of filler：By weight, 15～35 parts of filler matrix, tetraethyl orthosilicate surface hydroxyl modified
10～25 parts add into 50～100 parts of ethanol with 3～5 parts of silane coupler, add ammonia and adjust pH to 8～10, carry out
Reaction, reaction is aged after terminating, and ageing carries out under agitation again concentrating under reduced pressure after terminating, until reaction mass volume is original
50～60% for coming, solidss are leached, and in ethanol after immersion, cleaning, drying, obtain functionalization filler；
4th step, the hydrophobization of filler：By weight, by 20～30 parts of functionalization filler, 25～30 parts of hydrophobic polymer, molten
50～80 parts of mix homogeneously of agent, are warming up to 40～50 DEG C of 1～3h of backflow, concentrating under reduced pressure, until reaction mass volume is original
55～65%, solidss are leached, in ethanol after immersion, cleaning, drying, obtain hydrophobization filler.
5. self-cleaning bio-trickling filter according to claim 4, it is characterised in that in the 1st described step, pore creating material is
Refer to starch, polyvinyl alcohol, cellulose, carbamide, one or more of Polyethylene Glycol；1～3 DEG C/min of carbonization heating rate, carbonization
950～1050 DEG C of temperature, carbonization time 2～4 hours；In described the 1st step and the 2nd step, alcohols solvent selected from methanol, ethanol,
One or more in Propylene Glycol, glycerol or butanol.
6. self-cleaning bio-trickling filter according to claim 4, it is characterised in that in the 3rd described step, reaction temperature
It it is 50～65 DEG C, the response time is 2～6h, Aging Temperature is 15～20 DEG C, and digestion time is 12～24h；Silane coupler is selected
From for double-(γ-triethoxy silicon substrate propyl group) tetrasulfide (Si69), double (triethoxy silicon substrate propyl group) disulphide
(Si75), gamma-mercaptopropyltriethoxysilane (KH-580), gamma-aminopropyl-triethoxy-silane (KH-550), γ-(2,3- rings
The oxygen of oxygen third) one or more in propyl trimethoxy silicane (KH-560)；In the 4th described step, hydrophobic polymer is poly- inclined
Fluorothene, poly- (biasfluoroethylene-hexafluoropropylene), fluorination Merlon, polystyrene or poly- (styrene-b- dimethyl siloxanes)
In one kind.
7. emulsion waste water treatment process, it is characterised in that comprise the steps：
S1, the load of strain：Secondary sedimentation tank of sewage treatment work activated sludge is taken, by sludge according to solid-to-liquid ratio 1：5～10 mix with water,
The carbon source of water weight 2～4% and 1～5% nitrogen source are added, after mix homogeneously, centrifugation takes clear liquid；By clear liquid with it is hydrophobic
Change filler according to weight than 2～4：1 mixing, vacuumizing and defoaming process, then pour the mixture into the packed tower described in claim 1
Body（1）In；
S2, biochemical reaction：Emulsifying liquid waste water is slowly dropped in tower from tower top, then by air from bottom of towe infeed tower, keeps tower
Interior temperature is between 25～35 DEG C；
S3, water treatment：The feed liquid that bottom of towe is obtained is purified water after flocculation, sedimentation, ultrafiltration.
8. emulsion waste water treatment process according to claim 7, it is characterised in that in the 1st described step, carbon source can be excellent
Choosing uses such as saccharide such as glucose, sucrose, Fructose, galactose, Lactose and maltose；Nitrogen source can use such as ammonia, ammonia
Water, ammonium salt class, carbamide, Nitrateses, meat extract, peptone etc..
9. emulsion waste water treatment process according to claim 7, it is characterised in that in the 2nd described step, emulsion gives up
Water is the emulsifying liquid waste water of machining industry, and waste water COD content is 80000～120000ppm.
10. emulsion waste water treatment process according to claim 7, it is characterised in that in the 3rd described step, flocculant
It is aluminium polychlorid, ultrafilter membrane adopts pvdf membrane, and molecular cut off scope is 50,000～100,000.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357002Y (en) * | 1998-12-28 | 2000-01-05 | 胡天军 | Aerating biological filter |
| WO2009100012A1 (en) * | 2008-02-07 | 2009-08-13 | Amcol International Corporation | Underwater processing of fluid streams |
| CN201817328U (en) * | 2010-10-21 | 2011-05-04 | 南昌航空大学 | Aeration biological filter with hollow porous fiber filler and flow baffle plate |
-
2016
- 2016-12-30 CN CN201611259308.3A patent/CN106587334B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357002Y (en) * | 1998-12-28 | 2000-01-05 | 胡天军 | Aerating biological filter |
| WO2009100012A1 (en) * | 2008-02-07 | 2009-08-13 | Amcol International Corporation | Underwater processing of fluid streams |
| CN201817328U (en) * | 2010-10-21 | 2011-05-04 | 南昌航空大学 | Aeration biological filter with hollow porous fiber filler and flow baffle plate |
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