CN105858914A - Method and device for treating kitchen oil wastewater through ultraviolet decoupling microbiological method - Google Patents
Method and device for treating kitchen oil wastewater through ultraviolet decoupling microbiological method Download PDFInfo
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- CN105858914A CN105858914A CN201610343158.8A CN201610343158A CN105858914A CN 105858914 A CN105858914 A CN 105858914A CN 201610343158 A CN201610343158 A CN 201610343158A CN 105858914 A CN105858914 A CN 105858914A
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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
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
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Abstract
The invention relates to a kitchen hogwash waste oil wastewater treatment technology and provides a method and device for treating kitchen oil wastewater through an ultraviolet decoupling microbiological method. The method includes the steps that a porous polyurethane carrier is installed in a reactor, kitchen hogwash waste oil wastewater, a culture solution and gradient concentration wastewater are introduced in an intermittent water inlet mode, and microorganisms are inoculated, cultured and acclimatized in a gradient mode on the surface of the carrier; then kitchen hogwash waste oil wastewater to be treated is introduced in the intermittent water inlet mode, and ultraviolet irradiation is maintained above the surface of the wastewater. According to the method, the light porous polyurethane carrier is used for coupling ultraviolet photolysis and the biological film technology, and a good microenvironment is provided for growth of a biological film. Ultraviolet photolysis and microbiological wastewater treatment are combined, compared with an existing biological method, degradation efficiency of organic matter in the kitchen oil wastewater is improved by 20%, and the method can be widely used in the field of treatment of lakes, oceans, municipal wastewater, industrial wastewater, rural domestic wastewater and the like.
Description
Technical field
The invention belongs to the processing technology field of kitchen Catering wastes oil wastewater, be specifically related to ultraviolet photolysis coupling microorganism
Method processes the method and device of kitchen oil wastewater.
Background technology
Fast development and the continuous rise of tourist industry along with China's economy.The quantity of Peasants Joy in recent years the most rapidly increases,
Catering wastes (leftovers leftovers) and the washes of discharge also get more and more.Its complicated component, organic content is high, and head works as
Its punching: oils and fats.This type organic, can be to environment if the most treated and be discharged in rivers and lakes, and oils and fats floats
Keep afloat formation oil film, hinder oxygen transmission, threaten the existence of aquatic animals and plants.
At present, bioremediation oil wastewater of degrading is great development prospect.Utilize the vital movement process of microorganism
Oil wastewater is shifted and converts, the carbon source needed for oils and fats is grown as it and the energy, and water under the effect of enzyme
Solution becomes glycerol and long-chain fatty acid, is finally degraded to H2O and CO2Deng metabolite, and there is low cost, without secondary
Pollute advantage, and gain great popularity.
But the product long-chain fatty acid after grease hydrolysis can produce inhibitory action, and suppression effect to the activity of microorganism
Should strengthen along with double bond number and the increase of isomer quantity of taking advantage of a situation.Inhibiting mechanism is that long-chain fatty acid is adsorbed at cell wall
On, have impact on substrate and the mass transport process of product in metabolic process.
As high-level oxidation technology oxidation technology with hydroxyl radical free radical as primary oxidizers in water treatment procedure, can be relatively
The organic compound that some had in the short time labyrinth converts or degrades, be changed into that be readily biodegradable or
The Organic substance that toxicity is less, its process waste water have degraded thoroughly, the advantage such as non-secondary pollution, the time of staying be short, be to work as
A big focus in front sewage disposal research.
Including ultraviolet photolysis, it can make C-C, C-N key in organic compound break because absorbing the energy of ultraviolet light
Split, the hydroxyl of strong oxidizing property can be produced simultaneously, make Organic substance gradually degrade, be a kind of method simple, effective.But
Economically considering, simple employing ultraviolet photolysis energy consumption is high, the response time is long, is the most also infeasible.
So, by bioanalysis and the research in Fat wastewater treatment of the ultraviolet photolysis group technology, utilize between them is mutual
Benefit property and synergism improve the treatment effeciency of waste water, have very important significance.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes deficiency of the prior art, it is provided that a kind of ultraviolet photolysis couples micro-life
Thing method processes the method and device of kitchen oil wastewater.
For solving technical problem, the solution of the present invention is:
A kind of ultraviolet photolysis method that coupling microbial method processes kitchen oil wastewater is provided, comprises the following steps:
A, microbe inoculation
Cellular polyurethane material carrier is installed in reactor, then sinking from kitchen Catering wastes oil wastewater district will be gathered
Long-pending thing sample introduces reactor；Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time
Under conditions of HRT is 24h～36h, introduces kitchen Catering wastes oil wastewater 3～7 days in intermittent loading mode, make
Carrier surface attached microbial；
B, cultivating microorganism:
In reactor, introduce the culture fluid containing kitchen Catering wastes oil wastewater in intermittent loading mode, continue in room temperature
Be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, under conditions of hydraulic detention time HRT is 24h～36h, training
Support the microorganism of carrier surface attachment in step a；After cultivating 3～7 days, get rid of all sediment sample and trainings in reactor
Nutrient solution, the microorganism thickness of carrier surface attachment is 0.5-1.0mm；
The described culture fluid containing kitchen Catering wastes oil wastewater, is addition kitchen Catering wastes oil wastewater in culture fluid
Mixing, culture fluid is 100: 1 with the volume ratio of kitchen Catering wastes oil wastewater；
Described culture fluid is obtained by following manner configuration: take 65mg K2HPO4、25.5mg KH2PO4、133.8mg
Na2HPO4·12H2O、500mg NH4Cl、82.5mg CaCl2、67.5mg MgSO4·7H2O、0.75mg
FeCl3·6H2O and 1000mL deionized water；After mixing, dissolving, regulation pH value is 7.0, and at a temperature of 121 DEG C
Sterilizing 20min, i.e. obtains culture fluid；
C, acclimated microorganism:
Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time HRT be 24h～36h
Under conditions of, introduce, in intermittent loading mode, the kitchen Catering wastes oil wastewater that COD mass concentration is incremented by by gradient,
The microorganism of carrier surface attachment in step b is carried out gradient domestication, and every 3 days as a gradient acclimation period, domestication
The microorganism through acclimation is obtained after 9 days；
D, the process of kitchen Catering wastes oil wastewater
Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time HRT be 24h～36h
Under conditions of, use intermittent loading mode to be introduced in step c by pending kitchen Catering wastes oil wastewater and tame and docile through gradient
In the reactor that change processes, carry out kitchen Catering wastes Fat wastewater treatment；In processing procedure, ultraviolet source is placed
In reactor above surface 6cm～10cm of waste water, and ultraviolet light is kept to irradiate.
In the present invention, described gradient domestication refer to: by the COD mass concentration of kitchen Catering wastes oil wastewater by low to
High order is tamed；The COD mass concentration of kitchen Catering wastes oil wastewater used by a rear gradient, is previous ladder
1.0-1.5 times of degree；The COD mass concentration of final kitchen Catering wastes oil wastewater used is 1500mg/L；Each ladder
Degree waste water used is formed by the kitchen Catering wastes oil wastewater dilution of final utilization.
In the present invention, the COD mass concentration of described pending kitchen Catering wastes oil wastewater is 1200～1500mg/L,
PH value is 6.5-7.0.
In the present invention, the specific surface area of described cellular polyurethane material carrier is 4.8m2/ g, porosity is 88%
In the present invention, the wavelength controlling ultraviolet light is 254nm, and power is 30W～40W, and ultraviolet ray intensity is
1.0mW/cm2。
The invention further provides for ultraviolet photolysis coupling microbial method and process the device of kitchen oil wastewater, including case
The reactor body of formula, is arranged over ultraviolet source at reactor body；The top of reactor body is uncovered shape, or
It is provided with glass or the lucite passing through ultraviolet light for airtight energy；
Setting aeration entrance in the lower section of one end of reactor body, top sets discharge outlet, and the lower section of the other end sets water inlet；
Inside reactor is divided into ultraviolet photolysis reaction zone and the microbial degradation of lower section of top by one lateral partitions closed
Reaction zone two parts；The lateral partitions being positioned at discharge outlet side is provided with through hole or opening, is used for connecting two reaction zones；
In microbial degradation reaction zone, it is provided with and is parallel to each other and some vertical baffles staggered up and down, vertical baffle fills
Carry cellular polyurethane material carrier；The arrival end of internal circulation pump is connected in microbial degradation reaction zone, and its port of export then connects
To ultraviolet photolysis reaction zone.
In the present invention, the upper edge of described lateral partitions and the lower edge of discharge outlet are positioned in same level.
In the present invention, described ultraviolet source is the many ultraviolet lamp tubes being arranged in juxtaposition；Ultraviolet source and the spacing of lateral partitions
For 6cm～10cm.
In the present invention, described internal circulation pump is located in reactor body, or is located at outside reactor body.
Inventive principle:
The present invention utilizes and carries out ultraviolet photolysis reaction and microbial reaction in same reactor simultaneously.Ultraviolet photolysis makes kitchen water from washing rice
In foot rubbish oil wastewater, the difficult long-chain fatty acid being degraded by microorganisms is converted into the short-chain fatty acid that can be degraded by microorganisms,
Microorganism simultaneously carries out biochemical treatment, thoroughly removes the pollutant in kitchen oil wastewater.Ultraviolet photolysis of the present invention coupling is micro-
The method of bioanalysis close-coupled processing kitchen oil wastewater can give full play to ultraviolet photolysis process waste water and Biochemical method gives up
The advantage of water, processes more thorough, in hgher efficiency to waste water.
Compared with prior art, it provides the benefit that the present invention:
1, the present invention uses light porous Polyurethane carrier ultraviolet photolysis and technology of biological membrane to be coupled, this carrier energy
Good microenvironment is provided for biofilm development；
2, the method for ultraviolet photolysis and microbial treatments waste water is combined by the present invention, compared with existing bioanalysis, and degraded meal
Organic improved efficiency 20% in the oil wastewater of kitchen；
3, present invention can be widely used at the water such as lake, ocean, municipal sewage, industrial wastewater and domestic sewage in rural areas
Reason field.
Accompanying drawing explanation
The reactor figure of the decoupling microbial method of a kind of light close-coupled processing kitchen Catering wastes oil wastewater in Fig. 1 present invention；
Description of symbols in figure: 1, ultraviolet source；2, water inlet；3, discharge outlet；4, aeration entrance；5, vertically every
Plate；6, internal circulation pump.
The effect schematic diagram that kitchen oil wastewater is adsorbed by Fig. 2 empty of the present invention carrier；
The effect schematic diagram that in Fig. 3 present invention, kitchen oil wastewater is degraded by independent microbial method；
The schematic diagram that kitchen oil wastewater is degraded by Fig. 4 medium ultraviolet of the present invention decoupling microbial method of light.
Detailed description of the invention
Ultraviolet photolysis and biodegradation are innovatively combined by the present invention, design integrated reactor.By to many
(it is mainly characterized by specific surface area and is up to 4.8m hole Polyurethane carrier2/ g, there is the highest porosity 88% simultaneously, have
It is beneficial to microorganism habitat；Density and aqueous phase nearly 1.01～1.02g/cm3, can well circulate in water environment；Resistance to
For a long time property, recycling that can be permanently effective) utilization, as biomembranous carrier material, be greatly improved micro-life
Thing survival and deposit efficiency.The present invention can make to be difficult to biodegradable long-chain fatty acid and can obtain converting and degraded, can be big
The big treatment effeciency improving kitchen oil wastewater.Ultraviolet photolysis is combined with Biofilm Environment, can make full use of each
Advantage, the waste water for difficult degradation processes a new approach of opening up, also establishes theory and practice basis for this technical method.
Apparatus structure illustrates:
In the present invention, process the device of kitchen oil wastewater for ultraviolet photolysis coupling microbial method, including box reaction
Device body, is arranged over ultraviolet source 1 at reactor body；The top of reactor body is that uncovered shape (or is provided with use
Pass through glass or the lucite of ultraviolet light in airtight energy, so can avoid the abnormal smells from the patient distributed in wastewater treatment process).
Setting aeration entrance 4 in the lower section of one end of reactor body, top sets discharge outlet 3, and the lower section of the other end sets water inlet
Mouth 2.Inside reactor is divided into ultraviolet photolysis reaction zone and the microorganism of lower section of top by one lateral partitions closed
Degradation reaction district two parts；The lateral partitions being positioned at discharge outlet 3 side is provided with through hole or opening, for connection two
Reaction zone；In microbial degradation reaction zone, be provided with and be parallel to each other and some vertical baffles 5 staggered up and down, vertically every
Cellular polyurethane material carrier (specification is 12cm × 6cm × 0.8cm) it is loaded with on plate 5；The entrance of internal circulation pump 6
Being terminated in microbial degradation reaction zone, its port of export is then connected to ultraviolet photolysis reaction zone.
Ultraviolet source 1 can select the many ultraviolet lamp tubes being arranged in juxtaposition, ultraviolet source 1 with the spacing of lateral partitions to be
6cm～10cm.The upper edge of lateral partitions is positioned in same level with the lower edge of discharge outlet 3.
Internal circulation pump 6 can be located in reactor body, to keep the design of integrated reactor.Or, by interior circulation
Pump 6 is located at outside reactor body, to reduce the waterproof requirement of inner loop pump 6.
Device using method:
Kitchen Catering wastes oil wastewater, from water inlet 2 sample introduction, goes out sample through discharge outlet 3, introduces aeration from aeration entrance 4,
By internal circulation pump 6 as power source, collectively form internal circulation path with lateral partitions and vertical baffle 5.As needed individually
Carry out ultraviolet photolysis test, the cellular polyurethane material carrier loaded on vertical baffle 5 can be unloaded；Carry out the most micro-
During biodegradation test, vertical baffle 5 loads cellular polyurethane material carrier；Micro-life is coupled carrying out ultraviolet photolysis
During thing test, while loading cellular polyurethane material carrier, open ultraviolet source 1.Reactor realizes according to inflow
Overflow discharge.
Embodiment 1:
The present embodiment is the adsorption test to kitchen Catering wastes oil wastewater, specifically comprises the following steps that
For understanding the cellular polyurethane carrier used in the present invention absorption situation to kitchen Catering wastes oil wastewater, right
Before kitchen Catering wastes oil wastewater is degraded, first carry out adsorption test with empty vectors, to determine kitchen oils and fats
The impact of waste water COD mass concentration.
Carrying out the reaction condition of adsorption test: in constant temperature climatic chamber, temperature is 30 DEG C, aeration rate is
Under conditions of 1L/min～2.5L/min, hydraulic detention time HRT are 24h～36h, intermittent loading mode is used to treat
It is 2L's that the COD mass concentration processed flows through volume at 1200mg/L～1500mg/L kitchen Catering wastes oil wastewater
In reactor, and create an interior cycling condition with peristaltic pump.Response time 72h, every 6h sample analysis kitchen
The change of Catering wastes oil wastewater COD mass concentration.The assay method of COD mass: use HACH analyzer
Measure.
As shown in Figure 2, within the initial 24h response time, preliminary examination COD mass concentration is the kitchen of 1372mg/L
Oil wastewater, start 6h, absorption kitchen oil wastewater lowering of concentration to 12.76%, kitchen oils and fats to 12h
The adsorption concentration of waste water is stable about 20%；In the 48h response time subsequently, preliminary examination COD mass concentration is respectively
The kitchen oil wastewater of 1423mg/L and 1339mg/L, the concentration of the kitchen oil wastewater of absorption is stablized always
8%-10%.The reason that its initial 24h kitchen oil wastewater lowering of concentration is bigger is reactor itself, Inlet and outlet water pipe
And the adsorption that carrier is to it, 48h kitchen oil wastewater COD mass concentration subsequently is basically stable at 8%-10%,
It is owing to its absorption tends to saturation.
Embodiment 2:
The present embodiment is that kitchen Catering wastes oil wastewater is individually carried out microbial method test, specifically comprises the following steps that
A, microbe inoculation
Cellular polyurethane material carrier is installed in reactor, then sinking from kitchen Catering wastes oil wastewater district will be gathered
Long-pending thing sample introduces reactor；Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time
Under conditions of HRT is 24h～36h, introduces kitchen Catering wastes oil wastewater 3～7 days in intermittent loading mode, make
Carrier surface attached microbial；
B, cultivating microorganism:
In reactor, introduce the culture fluid containing kitchen Catering wastes oil wastewater in intermittent loading mode, continue in room temperature
Be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, under conditions of hydraulic detention time HRT is 24h～36h, training
Support the microorganism of carrier surface attachment in step a；After cultivating 3～7 days, get rid of all sediment sample and trainings in reactor
Nutrient solution, the microorganism thickness of carrier surface attachment is 0.5-1.0mm；
The described culture fluid containing kitchen Catering wastes oil wastewater, is addition kitchen Catering wastes oil wastewater in culture fluid
Mixing, culture fluid is 100: 1 with the volume ratio of kitchen Catering wastes oil wastewater；
Described culture fluid is the mixture of following component: 65mg K2HPO4、25.5mg KH2PO4、133.8mg
Na2HPO4·12H2O、500mg NH4Cl、82.5mg CaCl2、67.5mg MgSO4·7H2O、0.75mg
FeCl3·6H2O and 1000mL deionized water；After mixed dissolution, regulation pH value is 7.0, and goes out at a temperature of 121 DEG C
Bacterium 20min, i.e. obtains culture fluid.
C, acclimated microorganism:
Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time HRT be 24h～36h
Under conditions of, introduce, in intermittent loading mode, the kitchen Catering wastes oil wastewater that COD mass concentration is incremented by by gradient,
The microorganism of carrier surface attachment in step b is carried out gradient domestication, and every 3 days as a gradient acclimation period, domestication
The microorganism through acclimation is obtained after 9 days；
The domestication of described gradient refers to: enter by the COD mass concentration of kitchen Catering wastes oil wastewater order from low to high
Row domestication；The COD mass concentration of kitchen Catering wastes oil wastewater used by a rear gradient, is the 1.0-1.5 of previous gradient
Times；The COD mass concentration of final kitchen Catering wastes oil wastewater used is 1500mg/L；Waste water used by each gradient is equal
Diluted by the kitchen Catering wastes oil wastewater of final utilization and form.
The present embodiment, for being not turned on uviol lamp, carries out independent biomembrane Degrading experiment.
Reaction condition: in constant temperature climatic chamber, temperature is 30 DEG C, aeration rate is 1L/min～2.5L/min, hydraulic retention
Under conditions of time HRT is 24h～36h, intermittent loading mode is used pending mass concentration to be existed
1200mg/L～1500mg/L kitchen Catering wastes oil wastewater flows through in the reactor that volume is 2L, and comes with peristaltic pump
Create an interior cycling condition.Response time 72h, every 6h sample analysis kitchen Catering wastes oil wastewater (COD)
The change of concentration.The assay method of COD: use HACH analyzer to measure.
From the figure 3, it may be seen that the kitchen Catering wastes oil wastewater that preliminary examination COD mass concentration is 1250mg/L-1450mg/L,
In hydraulic detention time is 24h, at first point of sampling every time, kitchen Catering wastes oil wastewater COD mass is dense
Degree drops to about 15%, and second some kitchen Catering wastes oil wastewater COD mass concentration to sampling every time declines
25%-30%；The 3rd point and the 4th some kitchen Catering wastes oil wastewater COD mass concentration with post-sampling
Decline stable 40% and about 50% respectively.
Illustrating when hydraulic detention time is 24h, kitchen Catering wastes oil wastewater COD mass concentration is at 1500mg/L
Time following, independent biomembrance process carries out batch (-type) sample introduction to its kitchen Catering wastes oil wastewater, the degradation effect of its concentration
Finally it is basically stable at about 50%.
Embodiment 3:
First, operation microorganism inoculated, cultivate and tames, concrete steps and step a-c in embodiment 2
Content is identical.
Then step d, for the process to kitchen Catering wastes oil wastewater, concrete steps are performed:
In constant temperature climatic chamber, temperature is 30 DEG C, aeration rate is 1L/min～2.5L/min, hydraulic detention time HRT is
Under conditions of 24h～36h, intermittent loading mode is used to be introduced in step c by pending kitchen Catering wastes oil wastewater
In the reactor (volume 2L) of gradient acclimation, and create an interior cycling condition with peristaltic pump, carry out
Kitchen Catering wastes Fat wastewater treatment.Response time 72h, every 6h sample analysis kitchen Catering wastes oil wastewater
(COD) change of concentration.The assay method of COD: use HACH analyzer to measure.
In processing procedure, ultraviolet source it is positioned over above surface 6cm～10cm of waste water in reactor and keeps ultraviolet
Light irradiates, and the wavelength controlling ultraviolet light is 254nm, and power is 30W～40W, and ultraviolet ray intensity is 1.0mW/cm2。
Described pending kitchen Catering wastes oil wastewater COD mass concentration is 1200～1500mg/L, and pH value is 6.5-7.0.
Kitchen oil wastewater degradation rule under ultraviolet photolysis and biomembrane act on jointly when Fig. 4 show periodic running.
It can be seen that compare independent biomembrance process, ultraviolet photolysis coupled biological film is to kitchen Catering wastes oil wastewater
Degradation rate is the highest.When finally stablizing, its degradation efficiency improves more than 20% than independent biomembrance process.
Claims (9)
1. the method that a ultraviolet photolysis coupling microbial method processes kitchen oil wastewater, it is characterised in that include following
Step:
A, microbe inoculation
Cellular polyurethane material carrier is installed in reactor, then sinking from kitchen Catering wastes oil wastewater district will be gathered
Long-pending thing sample introduces reactor；Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time
Under conditions of HRT is 24h～36h, introduces kitchen Catering wastes oil wastewater 3～7 days in intermittent loading mode, make
Carrier surface attached microbial；
B, cultivating microorganism:
In reactor, introduce the culture fluid containing kitchen Catering wastes oil wastewater in intermittent loading mode, continue in room temperature
Be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, under conditions of hydraulic detention time HRT is 24h～36h, training
Support the microorganism of carrier surface attachment in step a；After cultivating 3～7 days, get rid of all sediment sample and trainings in reactor
Nutrient solution, the microorganism thickness of carrier surface attachment is 0.5～1.0mm；
The described culture fluid containing kitchen Catering wastes oil wastewater, is addition kitchen Catering wastes oil wastewater in culture fluid
Mixing, culture fluid is 100: 1 with the volume ratio of kitchen Catering wastes oil wastewater；
Described culture fluid is formulated by following manner: take 65mg K2HPO4、25.5mg KH2PO4、133.8mg
Na2HPO4·12H2O、500mg NH4Cl、82.5mg CaCl2、67.5mg MgSO4·7H2O、0.75mg
FeCl3·6H2O and 1000mL deionized water；After mixing, dissolving, regulation pH value is 7.0, and at a temperature of 121 DEG C
Sterilizing 20min, i.e. obtains culture fluid；
C, acclimated microorganism:
Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time HRT be 24h～36h
Under conditions of, introduce, in intermittent loading mode, the kitchen Catering wastes oil wastewater that COD mass concentration is incremented by by gradient,
The microorganism of carrier surface attachment in step b is carried out gradient domestication, and every 3 days as a gradient acclimation period, domestication
The microorganism through acclimation is obtained after 9 days；
D, the process of kitchen Catering wastes oil wastewater
Room temperature be 30 DEG C of constant temperature, aeration rate be 1L/min～2.5L/min, hydraulic detention time HRT be 24h～36h
Under conditions of, use intermittent loading mode to be introduced in step c by pending kitchen Catering wastes oil wastewater and tame and docile through gradient
In the reactor that change processes, carry out kitchen Catering wastes Fat wastewater treatment；In processing procedure, ultraviolet source is placed
In reactor above surface 6cm～10cm of waste water, and ultraviolet light is kept to irradiate.
Method the most according to claim 1, it is characterised in that the domestication of described gradient refers to: by kitchen hogwash rubbish
The COD mass concentration of rubbish oil wastewater order from low to high is tamed；Kitchen Catering wastes oil used by a rear gradient
The COD mass concentration of fat waste water, is 1.0-1.5 times of previous gradient；Final kitchen Catering wastes oil wastewater used
COD mass concentration is 1500mg/L；Waste water used by each gradient is dilute by the kitchen Catering wastes oil wastewater of final utilization
Release and form.
Method the most according to claim 1, it is characterised in that described pending kitchen Catering wastes oil wastewater
COD mass concentration be 1200～1500mg/L, pH value is 6.5-7.0.
Method the most according to claim 1, it is characterised in that the specific surface area of described cellular polyurethane material carrier
For 4.8m2/ g, porosity is 88%.
Method the most according to claim 1, it is characterised in that the wavelength controlling ultraviolet light is 254nm, power
For 30W～40W, ultraviolet ray intensity is 1.0mW/cm2。
6. process a device for kitchen oil wastewater for ultraviolet photolysis coupling microbial method, including box reactor
Body, it is characterised in that be arranged over ultraviolet source at reactor body；The top of reactor body is uncovered shape,
Or it is provided with glass or the lucite passing through ultraviolet light for airtight energy；
Setting aeration entrance in the lower section of one end of reactor body, top sets discharge outlet, and the lower section of the other end sets water inlet；
Inside reactor is divided into ultraviolet photolysis reaction zone and the microbial degradation of lower section of top by one lateral partitions closed
Reaction zone two parts；The lateral partitions being positioned at discharge outlet side is provided with through hole or opening, is used for connecting two reaction zones；
In microbial degradation reaction zone, it is provided with and is parallel to each other and some vertical baffles staggered up and down, vertical baffle fills
Carry cellular polyurethane material carrier；The arrival end of internal circulation pump is connected in microbial degradation reaction zone, and its port of export then connects
To ultraviolet photolysis reaction zone.
Device the most according to claim 6, it is characterised in that the upper edge of described lateral partitions and discharge outlet
Lower edge be positioned in same level.
Device the most according to claim 6, it is characterised in that described ultraviolet source is the many purples being arranged in juxtaposition
Outer fluorescent tube；Ultraviolet source is 6cm～10cm with the spacing of lateral partitions.
Device the most according to claim 6, it is characterised in that described internal circulation pump is located in reactor body,
Or be located at outside reactor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610343158.8A CN105858914A (en) | 2016-05-23 | 2016-05-23 | Method and device for treating kitchen oil wastewater through ultraviolet decoupling microbiological method |
Applications Claiming Priority (1)
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