CN107108292A - Method for high intensity waste water detoxification - Google Patents
Method for high intensity waste water detoxification Download PDFInfo
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- CN107108292A CN107108292A CN201580057375.4A CN201580057375A CN107108292A CN 107108292 A CN107108292 A CN 107108292A CN 201580057375 A CN201580057375 A CN 201580057375A CN 107108292 A CN107108292 A CN 107108292A
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 238000001784 detoxification Methods 0.000 title claims abstract description 62
- 239000002351 wastewater Substances 0.000 title claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- 239000010802 sludge Substances 0.000 claims abstract description 34
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 239000011268 mixed slurry Substances 0.000 claims abstract description 17
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims description 13
- 239000010842 industrial wastewater Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002028 Biomass Substances 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims 1
- 230000003694 hair properties Effects 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 241000894006 Bacteria Species 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 6
- 239000013589 supplement Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 3
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- 244000005700 microbiome Species 0.000 description 3
- 244000005706 microflora Species 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 206010040070 Septic Shock Diseases 0.000 description 2
- 206010044248 Toxic shock syndrome Diseases 0.000 description 2
- 231100000650 Toxic shock syndrome Toxicity 0.000 description 2
- 231100000481 chemical toxicant Toxicity 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- DPJRMOMPQZCRJU-UHFFFAOYSA-M thiamine hydrochloride Chemical compound Cl.[Cl-].CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N DPJRMOMPQZCRJU-UHFFFAOYSA-M 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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- 239000002253 acid Substances 0.000 description 1
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- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003295 industrial effluent Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000007269 microbial metabolism Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229940005654 nitrite ion Drugs 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 231100000614 poison Toxicity 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
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Classifications
-
- 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
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Molecular Biology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biodiversity & Conservation Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention provides the method purified to the high intensity waste water containing inhibitory compound, the described method comprises the following steps：(a) at least one high intensity waste water is mixed to form mixed slurry with least one secondary sludge, its total COD (TCOD) load value is up to 4g TCOD/g VSSs/day；Under anaerobic mixed slurry is added in detoxification reaction device, the anaerobic condition optionally micropopulation comprising anaerobic bacteria and facultative anaerobic bacteria to provide effluent through detoxification (b).
Description
Technical field
The present invention describes a kind of anaerobism poison-removing method for high intensity waste water, so that followed by more effective raw
Thing processing.
Background
Enumerating or discussing and be not construed as recognizing that this document is prior art to the file preferentially announced in this specification
A part or common knowledge.
Fast industrialization causes the generation of a large amount of high intensity waste water.Due to exist substantial amounts of organic and inorganic compound this
The property for planting waste water is probably complicated, and it is probably inhibition (inhibitory).The main source bag of this waste water
Include processed from petroleum industry, agro-food industry, agricultural chemicals, chemistry and pharmaceuticals industry, plastics, papermaking and paper pulp and dyestuff and
Paint manufacturing waste water.The pollutant produced in these industrial process may include electrophilic compound, such as azo dyes,
Chloronitrobenzene, nitro-aromatics, halogenated aliphatic hydrocarbons/aromatic compounds and metalloid, it can be at conventional aerobic waste water
Suppress in reason or remain unaffected (Van der Zee F.P. and Cervantes F.J., (2009)
Biotechnol.Adv.,27:256-277)。
Due to its influence to microbial metabolism approach, be present in the inhibitory compound in industrial effluent to anaerobism at
Reason process more harmful (Chen etc., (2008) Bioresour.Technol., 99:4044–4064；The such as Bulich, (1982)
Process Biochem.,17:45-47), therefore the performance of waste water treatment plant may be by relatively low COD (COD)
The influence (Chelliapan etc., (2006) Water Res., 40 (3), 507-516) of removal efficiency, in some instances it may even be possible to cause final
Processing invalid (Rodgers and Brunce, (2001) Water Res., 35:2101-2111；Van der Zee etc., (2001)
Biotechnol.Bioeng.,75:691-701).This potential threat needs to wastewater treatment process are reduced to greatest extent
Inflow is pre-processed.Conventional preprocess method is advanced oxidization method, for example ozone, UV catalysis oxidations, peroxidating
Hydrogen or its combination (Munter etc., (2001) .Proc.Estonian Acad.Sci.Chem., 50:59–80).Have been disclosed for
It is related to containing the molten of pollutant (such as inorganic cyanide and/or organic nitrile, nitrite ion, amphyl or phenol and formaldehyde)
Some inventions of the detoxification of liquid and waste water (referring to US patent number 4,340,490,3,970,554 and 4,280,914).So
And, due to various physics, the inherent limitation of chemistry and photochemistry method, other technologies (such as Biological Pretreatment (detoxification)) still exist
Continue in studying.
Greatly closed due to the possibility of the energy regenerating of methane form using the wastewater treatment of anaerobic biological process
Note.Such as anaerobism of upflow anaerobic sludge blanket process (UASB), anaerobic sequence batch reactor (AnSBR) and anaerobic filter (AN)
Technology has the potentiality of processing high strength industrial waste water.Under anaerobic, the pollutant in waste water is converted by reduction
(Field etc., (1995) .Anton.Leeuw.Int.J.G., 67:47-77.).It is reported that anaerobe is related to extensive dirt
Contaminate degraded (Harwood etc., (1999) .FEMS Microbiol.Rev., 22 of thing:439-458).If noxious material is through micro-
Biomineralization or bioconversion, then the inhibitory action of waste water (Sierra-Alvarez etc., (1994) may be greatly reduced
.Wat.Sci.Tech.,29(5-6):353-363).However, the reduction of many different intractable compounds is converted due to electronics
The limitation of transfer and very slowly carry out, and anaerobic biological reactor can be caused before fully alleviating in inhibitory action
Collapse.
Proposed invention is a kind of high performance-price ratio and quick poison-removing method, and wherein microorganism can be under the reducing conditions
Effectively make high intensity waste water detoxification, and resulting metabolin can be further used as the substrate of microorganism.It is non-at one
In limitative examples, subsequent processing can be carried out by the anaerobe of the energy production for methane form.
The content of the invention
The first aspect of the present invention provides the method purified to the high intensity waste water containing inhibitory compound, described
Method comprises the following steps：
(a) at least one high intensity waste water is mixed to form mixed slurry with least one secondary sludge, the slurry
Total COD (TCOD) load value is up to 4g TCOD/g VSSs/day；With
(b) slurry of mixing is added in detoxification reaction device under anaerobic, the anaerobic condition is optionally included
Anaerobic bacteria and the micropopulation of facultative (facultative) anaerobic bacteria, to provide the effluent of detoxification.
In some embodiments of the present invention, it then can handle the detoxification effluent in anaerobic reactor to produce
Biogas (biogas).Additionally or alternatively property, can then handle the detoxification effluent with refined in aerobic reaction device
(polishing) waste water.
In the further embodiment of the present invention, at least one secondary sludge can be can be from waste water treatment plant
Two-stage obtain biological sludge.
In some embodiments, the ratio of at least one of mixed slurry high intensity waste water and at least one secondary sludge
Can be 1:1 to 5:1.For example, the ratio of at least one of mixed slurry high intensity waste water and at least one secondary sludge can be with
It is 2:1 to 5:1 (such as 2.5:1 to 4:1, such as 3:1).
In some embodiments, high intensity waste water can：
(i) comprising organic and/or inorganic inhibitory compound；And/or
(ii) it is high strength industrial waste water.
In yet another embodiment of the present invention, can be without other chemicals.In the additionally or alternatively property of the present invention
In embodiment, before step (a), high intensity water and/or at least one secondary sludge can be applied in pre-treatment step
UV light, ultrasonic wave, steam treatment, grind and mill in one or more.
In another embodiment of the present invention, detoxification reaction device step：
(i) waterpower retention time can be 1 day to 5 days；And/or
(ii) pH can be 4-7.5 (e.g., from about 5.5)；And/or
(iii) reaction temperature is positively retained at 30 to 60 DEG C.
In some embodiments of the present invention, total COD (TCOD) load value of mixed slurry can be 1g
(for example 2.2g TCOD/g volatility suspends in TCOD/g VSSs/day to 4g TCOD/g VSSs/day
Solid/day).In another or the further embodiment of the present invention, the resolvable chemical oxygen demand of the mixed slurry
Ratio with TCOD can be 0.3:1 to 0.95:1 (such as 0.5:1 or 0.8:1).
In some embodiments of the present invention, when the detoxification reaction device includes anaerobic bacteria and facultative anaerobic bacteria
During micropopulation, the micropopulation of the anaerobic bacteria and facultative anaerobic bacteria is produced by the above method, then real to effluent
Purifying step is implemented to the effluent through detoxification before applying further processing, biomass is returned into detoxification reaction device afterwards.
Brief description of the drawings
Fig. 1 is depicted from single-stage anaerobic digestion process (single stage anaerobic digestion
Process) the schematic diagram of the detoxification reaction device of upstream.
Fig. 2 is figure of the description on following volatile fatty acid (VFA)：HRT is the thermophilic normal temperature (mesophilic) of 5 days
Detoxification reaction device (MDR-HRT-5)；HRT is the thermophilic detoxification reaction device (TDR-HRT-5) of 5 days；And feed.
Fig. 3 is description on the CH in the single-stage anaerobic reactor after following detoxification step4The figure of generation：HRT is 20
Thermophilic normal temperature detoxification reaction device after it thermophilic normal temperature detoxification reaction device (MM (MDR) -20d)；With the thermophilic detoxification that HRT is 20 days
Thermophilic normal-temperature reaction device after reactor (MM (TDR) -20d).
Description
As described above, the present invention relates to a kind of to high intensity waste water (such as high intensity containing organic inhibitory compound
Industrial wastewater) carry out detoxification method.The reaction is carried out in anaerobism/facultative reactor, and the reactor need not have balance
Acid generation and methane generation, and wherein the bioconversion of compound by anaerobism or aerobic-anaerobic microbe (in the feelings in the absence of oxygen
Under condition) carried out in the presence of some redox mediation compound intrinsic in entering stream.Secondary sludge is mixed with waste water,
To slow down the inhibitory action of waste water and reach nutrient balance.Detoxification reaction device protection downstream reactor (it can be anaerobic)
From suppressing., it is surprising that any outside agent (such as ozone, peroxidating need not be added in reactor and method
Thing, UV light or ultrasound), and according to Conventional wisdom, then need to be added.
So as to provide the method purified to the high intensity waste water containing inhibitory compound, methods described includes following
Step：
(a) at least one high intensity waste water is mixed to form mixed slurry with least one secondary sludge, the slurry
Total COD (TCOD) load value is up to 4g TCOD/g VSSs/day；With
(b) mixed slurry is added in detoxification reaction device under anaerobic, the anaerobic condition, which is optionally included, to be detested
Oxygen bacterium and the micropopulation of facultative anaerobic bacteria, to provide the effluent through detoxification.
" high intensity waste water " used herein refers to that there is high total COD (TCOD) and/or highly dissoluble chemistry to need
Any waste water of oxygen amount (SCOD).High TCOD and/or SCOD can refer to more than the TCOD's produced by sanitary wastewater and/or SCOD
TCOD and/or SCOD.For example, TCOD and/or SCOD can be more than 300mg/L, 1000mg/L is greater than.
As described above, high intensity waste water can be organic comprising can hinder that waste water handled in conventional processing systems
And/or inorganic inhibitory compound.One advantage of this method is the detoxification that these inhibitory compounds do not hinder waste water, therefore
So that the waste water energy is further processed.
" secondary sludge " used herein refers to the excessive sludge produced by any secondary biological treatment process.Can be suitable
The non-limiting example for the secondary sludge that ground is used in the present invention can be by clarifier and molten air supporting division (dissolved
Air floatation) produce.Other secondary sludges that can be mentioned that herein include the dirt thickened by belt squeezing/decantation
Mud, it is equally applicable to method described herein.In some embodiments of the invention that can be mentioned that herein, the secondary sludge
It can be the biological sludge that can be obtained from the two-stage of waste water treatment plant.
As described above, the method for step (b) may involve the use of the micropopulation comprising anaerobic bacteria and facultative anaerobic bacteria
Detoxification reaction device, to provide the effluent through detoxification.It should be noted that the presence of this anaerobic bacteria group is optional, because
This these bacterium must not necessarily be present in detoxification reaction device.However, in the presence of this bacterium, they, which can be used as to come from, appoints
The population of the bacterium of meaning suitable source is imported into.In a non-limiting example, the population can be by the way that thermophilic normal temperature anaerobic sludge be sunk
Product is obtained in detoxification reaction device.Additionally or alternatively, anaerobic bacteria and the micropopulation of facultative anaerobic bacteria can pass through
In the following manner is produced：(or in the presence of population) runs the above method first in the case of in the absence of any bacterium,
Then purifying step is implemented to the effluent through detoxification before further processing effluent, afterwards returned to biomass de-
Malicious reactor.
The principal character of methods described is as described below.
Pre-process detoxification reaction device effectively can carry out detoxification/life to the inhibition organic compound in high intensity waste water
Thing is converted.
Waste water can mix to provide complementarity carbon source and help with the biological sludge of the two-stage from waste water treatment plant
Help the inhibitory action slowed down to detoxification micropopulation (detoxifying microbial consortium).
Detoxification step is implemented by the anaerobe group being maintained in (or being selected to) pretreatment detoxification reaction device, and this is pre-
Handle detoxification reaction device and use redox (redox) mediation compound intrinsic in waste stream, without outside
Redox mediator chemical substance.Taken off in addition, the macromolecular for being hydrolyzed and being discharged by biological sludge supplement potentially contributes to protection
The microorganism being related to during poison is from toxic shock.
Then the stream through detoxification from above-mentioned pretreatment can be supplied to any appropriate anaerobic reactor, to improve first
Alkane is produced and COD is reduced.
Then the effluent through detoxification can be handled by any suitable process step.Possible subsequent processing steps can
Including but not limited to handled to produce biogas and/or handled with essence in aerobic reaction device in anaerobic reactor
Waste water processed.
High intensity waste water can be high strength industrial waste water." high strength industrial waste water " used herein refers to from industry
The high intensity waste water in source.
In yet another embodiment of the present invention, can be without other chemicals.In the other or replacement of the present invention
Property embodiment in, before step (a), high intensity water and/or at least one secondary sludge can be applied in pre-treatment step
Plus UV light, ultrasonic wave, steam treatment, grind and mill in one or more.
Detoxification reaction device step：
(i) waterpower retention time can be 1 day to 5 days；And/or
(ii) pH can be 4-7.5 (e.g., from about 5.5)；And/or
(iii) reaction temperature is positively retained at 30 to 60 DEG C.
As described above, the step of methods described (a) is related to the mixing for providing high intensity waste water and at least one secondary sludge
Slurry.It should be understood that high intensity waste water and at least one secondary sludge suitable can be determined using any by those skilled in the art
Mixed proportion.The specific ratio that can be mentioned that includes 1:1 to 5:1、2:1 to 5:1、2.5:1 to 4:1 ratio, such as 3:1 ratio
(the ratio between high intensity waste water and at least one secondary sludge).Additionally or alternatively, the resolvable chemical of the mixed slurry is needed
Oxygen amount and TCOD ratio can be 0.3:1 to 0.95:1 (such as 0.5:1 or 0.8:1).It is further other or it is alternative
In embodiment, total COD (TCOD) load value of mixed slurry can be for 1g TCOD/g VSSs/day extremely
4g TCOD/g VSSs/day (such as 2.2g TCOD/g VSSs/day).
Method for detoxification includes the waste water mixed with biological sludge feeding reactor, and the reactor can exclude sky
Gas.In some embodiments that can be mentioned that herein, this method can use following material or condition：
Comprising anaerobic bacteria and facultative bacteria (be for example already present on it is in reactor or its own be selected to this method
) micropopulation, also referred to as active microflora；
The reactor of slurry is accommodated, the slurry contains waste water, supplement sludge and active microflora；
The waterpower retention time (HRT) of 1 to 5 day, depending on the property of waste water；
Total COD (TCOD) load value in 4g TCOD/g VSSs (VSS)/day can be up to；
The pH value of 4-7.5 detoxification reaction device, optimal value is about 5.5；
Range of reaction temperature is 30-60 DEG C.
Additionally or alternatively, as non-limiting example, it may include according to poison-removing method/technique of the present invention：
The waste water mixed with biological sludge is fed in anaerobic reactor, the anaerobic reactor have comprising anaerobic bacteria and
The micropopulation of facultative bacteria.Reactor accommodates slurry, and the slurry contains waste water, supplement sludge and active microflora；
The waterpower retention time (HRT) of offer 1 to 5 day, depending on the property of waste water；
Offer can be up to total COD (TCOD) load value in 4g TCOD/g VSSs (VSS)/day；
The pH value of 4-7.5 detoxification reaction device is provided, optimal value is about 5.5；
The reaction temperature of 30-60 DEG C of offer.
Effluent from above-mentioned poison-removing method further can handle to produce methane and/or having in anaerobic reactor
Handle to be refined in oxygen reactor.
Some advantages of the present invention include, can be in the situation without supplement chemical substance (such as ozone or peroxide)
The lower detoxification for realizing waste water.The anaerobic processes in poison-removing method downstream have higher methane production and the COD removal efficiency improved.
The poison-removing method is also more quicker than conventional anaerobic poison-removing method.The oxidation-reduction potential of pretreated effluent is low, will not
Damage downstream anaerobic processes.The metabolin that will not be further degraded in anaerobic processes from the poison-removing method can be also easier
Ground is stabilized by aerobic refining stage.
Feasible processing scheme and its follow-up methane for high strength industrial waste water are produced and are described in Fig. 1.
In the embodiment shown in Fig. 1, high strength industrial waste water mixes with secondary sludge and feeds pretreatment first to be taken off
Malicious reactor (100), to reduce inhibition.Detoxifying unit can be with or without the follow-up clarifier (110) for separation of solid and liquid,
Depend on whether the design by biomass Returning reactor 100 and reactor 200.The supernatant of clarifier 110 is fed into
Single-stage anaerobic reactor, to produce biogas (reactor 200).Continued after single-stage anaerobic reactor for separating biogas
(220) degassing unit (210), effluent is fed into the second clarifier (230) to carry out separation of solid and liquid, and biomass is returned
Methane reactor.Carry out the effluent of self purifire 200 before as waste water (240) discharge through processing, can carry out further
Processing.
It the present invention is intended to be used in the detoxification of the high strength industrial waste water containing inhibitory compound.The technology can be used for protecting
Anaerobe group is from that can cause the toxic shock that anaerobic reactor fails.The generation through detoxification in pretreated waste water
The substrate of energy production can be further used as by thanking to thing.
Embodiment
Using thermophilic in intermittently feed and the anaerobic reactor based on the tank laboratory scale continuously stirred for washing out frequency
Normal temperature (35 DEG C) and thermophilic detoxification of (55 DEG C) condition to high intensity waste water implement case study.The feed used in the research
Including two kinds of industrial high intensity waste water, the waste water contains the toxic chemical mixed with two kinds of biological sludges (SL/1 and SL/2)
(WW/1 and WW/2), mixed proportion is 1/8SL/1:1/8SL/2:3/8WW/1:3/8WW/2.It is mixed using common domestic mixer
Close 2 minutes, to provide the feed used in the examples below.The compound through detoxification is then used in thermophilic normal-temperature reaction device
To produce biogas.
The anaerobism population sludge used in this research is the local municipal sewage plant from processing firsts and seconds sludge
Thermophilic Normal Temperature Anaerobic Digestion device in collect.The various technological parameters of the high strength industrial waste water used in the present embodiment are summarized in
Table 1.
Table 1
Fig. 3 and Fig. 4 show the support data of the purposes of high intensity waste water poison-removing method and its subsequent production biogas.
During Detoxification is carried out in anaerobic reactor, wherein being substantially carried out the bioconversion of toxic chemical.Such as Fig. 2 institutes
Show, VFA concentration may be by significant changes in During Detoxification, or do not have significant changes.It not recorded significant quantity in this step
Biogas produce.Then, as shown in figure 3, when the place in thermophilic normal temperature single-stage anaerobic reactor (HRT 20 days, working volume 10L)
When managing the feed through detoxification, notable substantial amounts of biogas is generated.
Claims (16)
1. the method that pair high intensity waste water containing inhibitory compound is purified, the described method comprises the following steps：
(a) at least one high intensity waste water is mixed to form mixed slurry with least one secondary sludge, totalization of the slurry
Learn oxygen demand (TCOD) load value and be up to 4g TCOD/g VSSs/day；With
(b) under anaerobic mixed slurry is added in detoxification reaction device to provide the effluent through detoxification, the anaerobism
Micropopulation of the condition optionally comprising anaerobic bacteria and facultative anaerobic bacteria.
2. the method for claim 1, wherein then handle the effluent through detoxification in anaerobic reactor to produce
Raw biogas.
3. method as claimed in claim 1 or 2, wherein, the effluent through detoxification is then handled in aerobic reaction device
With refined wastewater.
4. the method as any one of preceding claims, wherein, at least one of mixed slurry high intensity waste water with extremely
A kind of few ratio of secondary sludge is 1:1 to 5:1.
5. method as claimed in claim 4, wherein, at least one of mixed slurry high intensity waste water and at least one two grades of dirts
The ratio of mud is 2:1 to 5:1 (such as 2.5:1 to 4:1, such as 3:1).
6. the method as any one of preceding claims, wherein, the high intensity waste water includes organic and/or inorganic suppression
Property compound processed.
7. the method as any one of preceding claims, wherein, the high intensity waste water is high strength industrial waste water.
8. the method as any one of preceding claims, wherein, it is not added with other chemicals.
9. the method as any one of preceding claims, wherein, the waterpower retention time of the detoxification reaction device step
For 1 day to 5 days.
10. the method as any one of preceding claims, wherein, the pH of the detoxification reaction device step is 4-7.5 (examples
Such as from about 5.5).
11. the method as any one of preceding claims, wherein, the reaction temperature of the detoxification reaction device step is kept
At 30 to 60 DEG C.
12. the method as any one of preceding claims, wherein, total COD (TCOD) load of mixed slurry
It is worth for 1g TCOD/g VSSs/day to 4g TCOD/g VSSs/day that (such as 2.2g TCOD/g are waved
Hair property suspended solid/day).
13. the method as any one of preceding claims, wherein, when the detoxification reaction device includes anaerobic bacteria and simultaneous
During the micropopulation of property anaerobic bacteria, the micropopulation of the anaerobic bacteria and facultative anaerobic bacteria is any in claim 1-12
The method of item is produced, then to the effluent implementation purification step through detoxification before further processing is implemented to effluent
Suddenly, biomass is returned into detoxification reaction device afterwards.
14. the method as any one of preceding claims, wherein, this method may include before step (a) to high-strength
Spend the pre-treatment step of water and/or at least one secondary sludge, the pre-treatment step may include UV light, ultrasonic wave, steam treatment,
One or more in grinding and milling.
15. the method as any one of preceding claims, wherein, at least one secondary sludge can be can be from useless
The biological sludge that the two-stage of water treatment plant is obtained.
16. the method as any one of preceding claims, wherein, the resolvable chemical oxygen demand of the mixed slurry with
TCOD ratio is 0.3:1 to 0.95:1 (such as 0.5:1 or 0.8:1).
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| PCT/SG2015/050404 WO2016064348A1 (en) | 2014-10-21 | 2015-10-21 | Process for detoxification of high strength wastewater |
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| US6015496A (en) * | 1993-04-12 | 2000-01-18 | Khudenko; Boris M. | In-sewer treatment of wastewater and sludges |
| US7993522B2 (en) * | 2006-01-25 | 2011-08-09 | Siemens Industry, Inc. | Conditioning system for activated sludge wastewater treatment processes |
| KR20100136989A (en) * | 2008-03-28 | 2010-12-29 | 지멘스 워터 테크놀로지스 코포레이션 | Hybrid aerobic and anaerobic wastewater and sludge treatment systems and methods |
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2015
- 2015-10-21 SG SG11201703227UA patent/SG11201703227UA/en unknown
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- 2015-10-21 WO PCT/SG2015/050404 patent/WO2016064348A1/en active Application Filing
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| WO2016064348A1 (en) | 2016-04-28 |
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