CN110183061A - It is a kind of that internal carbon source denitrogenation dephosphorizing sewage disposal system and method are utilized based on oxidation ditch - Google Patents
It is a kind of that internal carbon source denitrogenation dephosphorizing sewage disposal system and method are utilized based on oxidation ditch Download PDFInfo
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- CN110183061A CN110183061A CN201910552657.1A CN201910552657A CN110183061A CN 110183061 A CN110183061 A CN 110183061A CN 201910552657 A CN201910552657 A CN 201910552657A CN 110183061 A CN110183061 A CN 110183061A
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- 239000010865 sewage Substances 0.000 title claims abstract description 133
- 230000003647 oxidation Effects 0.000 title claims abstract description 73
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 73
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 31
- 239000007788 liquid Substances 0.000 claims abstract description 114
- 238000000855 fermentation Methods 0.000 claims abstract description 110
- 230000004151 fermentation Effects 0.000 claims abstract description 110
- 239000010802 sludge Substances 0.000 claims abstract description 107
- 238000004062 sedimentation Methods 0.000 claims abstract description 56
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 230000001954 sterilising effect Effects 0.000 claims abstract description 13
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- 230000033116 oxidation-reduction process Effects 0.000 claims description 42
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 35
- 229910052760 oxygen Inorganic materials 0.000 claims description 35
- 239000001301 oxygen Substances 0.000 claims description 35
- 230000015271 coagulation Effects 0.000 claims description 19
- 238000005345 coagulation Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 11
- 238000012549 training Methods 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 239000002574 poison Substances 0.000 claims 2
- 231100000614 poison Toxicity 0.000 claims 2
- 239000005416 organic matter Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000005276 aerator Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000003491 array Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 235000021391 short chain fatty acids Nutrition 0.000 description 1
- 150000004666 short chain fatty acids Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
- C02F2209/04—Oxidation reduction potential [ORP]
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- 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
- C02F2209/16—Total nitrogen (tkN-N)
-
- 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
- C02F2209/22—O2
-
- 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
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Present applicant proposes a kind of to utilize internal carbon source denitrogenation dephosphorizing sewage disposal system based on oxidation ditch, comprising: primary sedimentation tank, oxidation ditch, secondary settling tank, sludge fermentation device and sterilization pool；Primary sedimentation tank treated sewage transport is to oxidation ditch, treated that sludge is transported to sludge fermentation device ferments for primary sedimentation tank, the fermentation liquid that sludge fermentation device generates is transported to oxidation ditch, oxidation ditch handles the fermentation liquid of sewage and sludge fermentation device from primary sedimentation tank, the mixed liquor of generation is transported to secondary settling tank, the supernatant that secondary settling tank generates exports after sterilizing using sterilization pool, and sludge a portion that secondary settling tank generates flows back into oxidation ditch.The sewage disposal system of the application ferments the sludge that primary sedimentation tank generates, and the fermentation liquid of generation is used as carbon source for subsequent biochemical treatment link；Constituency distribution is carried out to treatment sewage, ensure that sewage disposal system is in optimal operational condition, while reaching removal organic matter, nitrogen phosphorus also has very high removal effect.
Description
Technical field
It is this application involves technical field of sewage, in particular to a kind of that internal carbon source denitrogenation dephosphorizing is utilized based on oxidation ditch
Sewage disposal system and method.
Background technique
Urban sewage treatment system removes the organic matter (COD) in municipal sewage by activated sludge process, and oxidation ditch is
A kind of typical case of activated sludge process has organic matter (COD) removal degree height, impact resistance, stable and reliable operation, operation letter
The features such as list, operational management convenient, easy to maintenance.But existing urban sewage treatment system has the disadvantage that
(1) dissolved oxygen concentration is difficult to be precisely controlled in oxidation ditch, therefore efficiencies of nitrogen removal is limited, and hardly acts as to dephosphorization
With；
(2) when the carbohydrate in waste water is more, N, P content are uneven, and pH value is relatively low, sludge loading mistake in oxidation ditch
Height, dissolved oxygen concentration is insufficient, and unsmooth wait of spoil disposal easily causes the sludge bulking of der Pilz property；
(3) due to needing lower organic loading and longer hydraulic detention time, oxidation ditch to take up a large area；
(4) the aerator oxygen-transfer efficiency used is low, and power consumption is high；
(5) in oxidation ditch, in order to obtain its unique mixing and treatment effect, mixed liquor must be existed with certain flow velocity
Ditch internal circulation flow, flow velocity is uneven easily to cause sludgd deposition.
Summary of the invention
To solve above-mentioned deficiency of the prior art, the application propose a kind of removing using internal carbon source denitrogenation based on oxidation ditch
Phosphorus sewage disposal system and method.
The technical solution of the application is achieved in that
According to a first aspect of the present application, a kind of utilization internal carbon source denitrogenation dephosphorizing sewage treatment based on oxidation ditch is proposed
System.
It is in some embodiments, described that internal carbon source denitrogenation dephosphorizing sewage disposal system is utilized based on oxidation ditch, comprising:
Primary sedimentation tank, oxidation ditch, secondary settling tank, sludge fermentation device and sterilization pool；
Primary sedimentation tank treated sewage transport to oxidation ditch, primary sedimentation tank treated sludge is transported to sludge fermentation device into
Row fermentation, the fermentation liquid that sludge fermentation device generates are transported to oxidation ditch, and oxidation ditch is to sewage and sludge hair from primary sedimentation tank
The fermentation liquid of ferment device is handled, and the mixed liquor of generation is transported to secondary settling tank, and the supernatant that secondary settling tank generates is using disinfection
It is exported after the disinfection of pond, sludge a portion that secondary settling tank generates flows back into oxidation ditch；
The oxidation ditch includes: pre- anoxic pond, anaerobic pond and Gou Chi, and pre- anoxic pond and anaerobic pond are connected by first through hole
Logical, anaerobic pond is connected to ditch pond by the second through-hole；
Pre- anoxic pond includes one or more entrances, for receiving the returned sludge of the secondary settling tank and described just heavy
First part's sewage in pond, pre- anoxic pond generate after carrying out pre- anoxic treatment to the returned sludge and first part's sewage
Coagulation liquid, coagulation liquid are input to anaerobic pond by first through hole；
Anaerobic pond includes one or more entrances, for receive the primary sedimentation tank second part sewage and the dirt
First part's fermentation liquid of mud installation for fermenting, anaerobic pond is to the coagulation liquid, first part's fermentation liquid and described
Two part of contaminated water generate two stage treatment liquid after carrying out Anaerobic Treatment, and two stage treatment liquid is input to ditch pond by the second through-hole；
Chi Gou includes one or more entrances, for receiving the Part III sewage and the sludge of the primary sedimentation tank
The second part fermentation liquid of installation for fermenting；No. two ditches, No. three ditches, No. four ditches and the No.1 ditch of sequential communication are provided in the ditch of pond,
The head end of No. two ditches is provided with the second through-hole being connected with anaerobic pond and ditch pond entrance, and the tail end setting ditch pond of No.1 ditch goes out
Mouthful；After being input to the Part III sewage, the second part fermentation liquid and the two stage treatment liquid mixing in ditch pond, successively
Mixed liquor is generated after the processing of No. two ditches, No. three ditches, No. four ditches and No.1 ditch, first part's mixed liquor is in No.1 ditch tail end
The outlet of ditch pond is output to the secondary settling tank, and second part mixed liquor flows back into No. two ditches by No.1 ditch.
Optionally, the training wall for extending fluid path is provided in the anaerobic pond.
Optionally, in the pre- anoxic pond, the anaerobic pond, No. two ditches, No. three ditches or No. four ditches
One or more be provided with pushing flow mixer.
Optionally, one or more setting aeration tube in No. three ditches, No. four ditches or the No.1 ditch
Or aeration plate.
Optionally, the No.1 ditch second half section setting aeration tube or aeration plate.
Optionally, the pre- anoxic pond includes that two or more entrances, sludge and sewage are defeated by different entrances
Enter to pre- anoxic pond.
Optionally, reflux pump is set in the No.1 ditch, and the second part mixed liquor is pumped into No. two ditches by reflux pump.
According to a second aspect of the present application, a kind of utilization internal carbon source denitrogenation dephosphorizing sewage treatment based on oxidation ditch is proposed
Method.
In some embodiments, described that internal carbon source denitrogenation dephosphorizing sewage water treatment method is utilized based on oxidation ditch, it is based on one
Sewage disposal system carries out sewage treatment, and the sewage disposal system includes: primary sedimentation tank, oxidation ditch, secondary settling tank, sludge fermentation dress
It sets and sterilization pool；
The oxidation ditch includes: pre- anoxic pond, anaerobic pond and Gou Chi；Pre- anoxic pond and anaerobic pond are connected by first through hole
Logical, anaerobic pond is connected to ditch pond by the second through-hole；Be provided in the ditch of pond No. two ditches of sequential communication, No. three ditches, No. four ditches and
No.1 ditch, the head end of No. two ditches are provided with the second through-hole being connected with anaerobic pond and ditch pond entrance, the tail end setting of No.1 ditch
The outlet of ditch pond；
The described method includes:
Primary sedimentation tank treated sewage transport to oxidation ditch, primary sedimentation tank treated sludge is transported to sludge fermentation device into
Row fermentation, the fermentation liquid that sludge fermentation device generates are transported to oxidation ditch, and oxidation ditch is to sewage and sludge hair from primary sedimentation tank
The fermentation liquid of ferment device is handled, and the mixed liquor of generation is transported to secondary settling tank, and the supernatant that secondary settling tank generates is using disinfection
It is exported after the disinfection of pond, sludge a portion that secondary settling tank generates flows back into oxidation ditch；
Wherein, pre- anoxic pond is to the returned sludge from the secondary settling tank and from first part's sewage of the primary sedimentation tank
Coagulation liquid is generated after carrying out pre- anoxic treatment, coagulation liquid is input to anaerobic pond by first through hole；
Anaerobic pond sends out the coagulation liquid from the pre- anoxic pond, the first part from the sludge fermentation device
Zymotic fluid and second part sewage from the primary sedimentation tank generate two stage treatment liquid after carrying out Anaerobic Treatment, and two stage treatment liquid passes through
Second through-hole is input to ditch pond；
Part III sewage from the primary sedimentation tank, the second part fermentation liquid from the sludge fermentation device and come
From the two stage treatment liquid of the anaerobic pond after No. two ditches mixing in ditch pond, successively pass through No. two ditches, No. three ditches, No. four ditches and one
Mixed liquor is generated after the processing of number ditch, first part's mixed liquor is output to the secondary settling tank in the outlet of the ditch pond of No.1 ditch tail end, the
Two part mixed liquors flow back into No. two ditches by No.1 ditch.
Optionally, the sewage water treatment method further include: dissolved according to the target dissolved oxygen content in pre- anoxic pond with practical
Oxygen amount controls the returned sludge flow for being input to the pre- anoxic pond and first part's discharge of sewage.
Optionally, the sewage water treatment method further include: dissolved according to the target dissolved oxygen content in pre- anoxic pond with practical
Oxygen amount, priority acccess control are input to the returned sludge flow of the pre- anoxic pond.
Optionally, the sewage water treatment method further include: according to the desirable oxidation reduction potential and actual oxygen in anaerobic pond
Change reduction potential, control is input to the first part's fermentation liquid flow and the second part discharge of sewage of the anaerobic pond.
Optionally, the sewage water treatment method further include: according to the desirable oxidation reduction potential and actual oxygen in anaerobic pond
Change reduction potential, priority acccess control is input to first part's fermentation liquid flow of the anaerobic pond.
Optionally, the sewage water treatment method further include: according to the desirable oxidation reduction potential and reality of No. two ditches
Oxidation-reduction potential controls the Part III discharge of sewage for inputting No. two ditches, second part fermentation liquid flow and by No.1
Ditch flows back into the second part mixing flow quantity of No. two ditches.
Optionally, the sewage water treatment method further include: according to the desirable oxidation reduction potential and reality of No. two ditches
Oxidation-reduction potential, priority acccess control are flowed back into the second part mixing flow quantity of No. two ditches by No.1 ditch.
The beneficial effect of the application is:
(1) it by the layout to pre- anoxic pond, anaerobic pond and ditch pond, becomes reconciled to anoxic zones, the anaerobic zone of oxidation ditch
Oxygen region is repartitioned, and is carried out constituency distribution to treatment sewage, is separately input to pre- anoxic pond, anaerobic pond and Gou Chi
In, it ensure that sewage disposal system is in optimal operational condition, while reaching removal organic matter, nitrogen phosphorus also has very high go
Except effect.
(2) sludge that primary sedimentation tank generates is fermented, the fermentation liquid of generation supplies subsequent biochemical treatment ring as carbon source
Section uses.
(3) fermentation liquid that sludge fermentation device generates can be used as carbon source for subsequent biochemical treatment link, be not necessarily to
External carbon source is added, cost has been saved, while reducing sludge of sewage treatment plant amount, saves sludge treatment expense.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the functional block diagram of an alternative embodiment of the sewage disposal system of the application；
Fig. 2 is the structural schematic diagram of an alternative embodiment of the oxidation ditch of the application；
Fig. 3 is the side structure schematic view of an alternative embodiment of the sludge fermentation device of the application；
Fig. 4 is the overlooking structure diagram of an alternative embodiment of the sludge fermentation device of the application；
Fig. 5 is the side structure schematic view of an alternative embodiment of the enters mud pipe of the application；
Fig. 6 is the side structure schematic view of an alternative embodiment of the water inlet pipe of the application；
Appended drawing reference:
1, primary sedimentation tank；2, secondary settling tank；3, sludge fermentation device；4, sterilization pool；100, oxidation ditch；10, pre- anoxic pond；11,
Pre- anoxic pond entrance；12, first through hole；20, anaerobic pond；21, anaerobic pond entrance；22, the second through-hole；23, training wall；24,
Three through-holes；30, Gou Chi；31, No.1 ditch；32, No. two ditches；33, No. three ditches；34, No. four ditches；35, ditch pond entrance；36, ditch pond goes out
Mouthful；37, reflux pump；41, pushing flow mixer；51, aerator；61, air blower.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Fig. 1 shows the alternative embodiment using internal carbon source denitrogenation dephosphorizing sewage disposal system based on oxidation ditch
System block diagram.
As shown in Figure 1, the alternative embodiment discloses a kind of utilizing at internal carbon source denitrogenation dephosphorizing sewage based on oxidation ditch
Reason system, comprising: primary sedimentation tank 1, oxidation ditch 100, secondary settling tank 2, sludge fermentation device 3 and sterilization pool 4.
Primary sedimentation tank 1 precipitate etc. processing operation to treatment sewage, treated the sewage transport of primary sedimentation tank 1 to oxidation ditch
100, treated that sludge is transported to sludge fermentation device 3 ferments for primary sedimentation tank 1, the fermentation liquid that sludge fermentation device 3 generates
It is transported to oxidation ditch 100, oxidation ditch 100 handles the fermentation liquid of sewage and sludge fermentation device 3 from primary sedimentation tank 1,
The mixed liquor of generation is transported to secondary settling tank 2, and the supernatant that secondary settling tank 2 generates exports after sterilizing using sterilization pool 4, the liquid of output
Body can reach discharge standard.Sludge a portion that secondary settling tank 2 generates flows back into oxidation ditch, the discarded discharge of rest part sludge
Or it is separately dealt with after collecting.
Fig. 2 shows the structural schematic diagrams of an alternative embodiment of oxidation ditch.
In the alternative embodiment, oxidation ditch 100 includes: pre- anoxic pond 10, anaerobic pond 20 and ditch pond 30, pre- 10 He of anoxic pond
Anaerobic pond 20 is connected to by first through hole 12, and anaerobic pond 20 is connected to ditch pond 30 by the second through-hole 22.
Pre- anoxic pond 10 includes one or more entrances 11, for receiving the returned sludge and primary sedimentation tank 1 of secondary settling tank 2
First part's sewage, pre- anoxic pond generates coagulation after carrying out pre- anoxic treatment to returned sludge and first part's sewage
Liquid, coagulation liquid are input to anaerobic pond 20 by first through hole 12.Optionally, the returned sludge of secondary settling tank 2 and primary sedimentation tank 1
First part's sewage is input to pre- anoxic pond 10 by identical entrance 11.Optionally, pre- anoxic pond 10 includes two or two
With upper inlet 11, the returned sludge of secondary settling tank 2 and first part's sewage of primary sedimentation tank 1 are input to pre- anoxic by different entrances
Pond 10.
Anaerobic pond 20 includes one or more entrances 21, for receiving the second part sewage and sludge of primary sedimentation tank 1
First part's fermentation liquid of installation for fermenting 3.Anaerobic pond 20 to from pre- anoxic pond 10 coagulation liquid, from sludge fermentation fill
It sets 3 first part's fermentation liquid and second part sewage from primary sedimentation tank 1 carries out generating two stage treatment liquid after Anaerobic Treatment, two
Grade treatment fluid is input to ditch pond 30 by the second through-hole 22.
Pond ditch 30 includes one or more entrances 35, for receiving the Part III sewage and sludge hair of primary sedimentation tank 1
The second part fermentation liquid of ferment device 3.The ditch 34 and one of ditch 33, four of No. two ditches 32, three of sequential communication is provided in the ditch of pond
Number ditch 31, the head end of No. two ditches 32 are provided with the second through-hole 22 and ditch pond entrance 35 being connected with anaerobic pond 20, No.1 ditch 31
Tail end setting ditch pond export 36；The Part III sewage, second part fermentation liquid and two stage treatment liquid for being input to ditch pond 30 are mixed
After conjunction, mixed liquor successively is generated after No. two ditches 34 of ditch 33, four of ditch 32, three and No.1 ditch 31 are handled, first part is mixed
It closes liquid and is output to secondary settling tank 2 in the ditch pond of No.1 ditch tail end outlet 36, second part mixed liquor flows back into No. two by No.1 ditch 31
Ditch 32.
Using above-described embodiment, oxidation ditch to anoxic zones, is detested by the layout to pre- anoxic pond, anaerobic pond and ditch pond
Oxygen region and aerobic region are repartitioned, and are carried out constituency distribution to treatment sewage, are separately input to pre- anoxic pond 10, detest
In oxygen pond 20 and ditch pond 30.Pre- anoxic pond is for generating a kind of anaerobic environment, to the nitric acid in sewage in secondary settling tank returned sludge
Salt nitrogen (NO3- N) it is subject to denitrification removal, necessary absolute anaerobic condition is provided for subsequent progress dephosphorization.Anaerobic pond is for generating
A kind of anaerobic environment is compared thorough biological removal to phosphor in sewage under sufficient volatility organic acid existence condition.Ditch
Pond 30 is converted to nitrate nitrogen (NO in aerobic for generating a kind of aerobic and anoxic alternate environment, to ammonia nitrogen in sewage3- N),
By nitrate nitrogen (NO in anaerobic environment3- N) it is converted into nitrogen removal.By above-mentioned pre- anoxic, anaerobism, aerobic environment sky
Between change, provide appropraite condition for biological removal organic matter and nitrogen phosphorus, ensure that oxidation ditch is in optimal operational condition, reaching
While removing organic matter, nitrogen phosphorus also has very high removal effect.Under usual conditions, carbon/nitrogen ratio and carbon/phosphorus in primary sedimentation tank water outlet
More lower than comparing, the carbon source in sewage is difficult to meet biological carbon and phosphorous removal needs, generally to be supplemented by additional carbon.
The fermentation liquid that Sludge from primary sedimentation tank is generated by sludge fermentation device is rich in high-quality carbon source (based on volatile organic acids), is added to
Anaerobic pond and anoxic pond, can supplement carbon source needed for biological carbon and phosphorous removal, substitute additional carbon, realize and save resource, change give up into
It is precious.
Optionally, No. two ditches 34 of ditch 33, four of ditch 32, three and No.1 ditch 31 spiral setting.
In further embodiments, the training wall 23 for extending fluid circulating path is provided in anaerobic pond 20.Water conservancy diversion
Anaerobic pond 20 is divided into two or more regions by wall 23, is provided on training wall for being connected to adjacent area third through-hole 24.
In embodiment illustrated in fig. 2, the quantity of training wall 23 is 1, and training wall is arranged from top to bottom, and anaerobic pond 20 is divided into the area Liang Ge
Domain, since first through hole 12 and entrance 21 are arranged at the top of anaerobic pond, the bottom of training wall 23 is arranged in third through-hole 24
Portion.By the guide functions of training wall 23, the circulation path of sewage and coagulation liquid in anaerobic pond 20 extends, and then extends
The processing time of sewage and coagulation liquid in anaerobic pond.Those skilled in the art, can according to the introduction of above-described embodiment
With to training wall quantity and structure improve, to realize the extended effect of fluid circulating path.
Optionally, the pre- anoxic pond 10 or anaerobic pond 20 or No. two ditches 32 or No. three ditches 33 or No. four
Pushing flow mixer 41 is provided in ditch 34.It can accelerate the circulation of sewage or treatment fluid in ditch pond by pushing flow mixer 41,
Prevent sludge accumulation situation.
Optionally, aerator 51 is set in No. three ditches 33 or No. four ditches 34.Air blower 61 by gas-guide tube by air or
Person's oxygen blasts aerator 51, so that No. three ditches 33 or No. four ditches 34 are aerobic environment.
Optionally, aerator 51 is set in No.1 ditch 31.Optionally, aerator is arranged in the second half section of No.1 ditch 31
51, the front half section of No.1 ditch 31 is not provided with aerator 51.
Optionally, aerator 51 is aeration tube.Optionally, aerator 51 is aeration plate.Optionally, aeration tube or exposure
Micropore is arranged in the surface of gas disk.Using the embodiment, the oxygen-transfer efficiency of aerator can be improved, power consumption is low.
Optionally, reflux pump is set in No.1 ditch 31, and second part mixed liquor is pumped into No. two ditches 32 by reflux pump.It is optional
The mixed liquor on ground, No.1 ditch 31 feeds back to No. two ditches 32 by ditch pond entrance 35.Using the embodiment, when total nitrogen refers in mixed liquor
When mark does not meet discharge standard, mixed liquor is flowed back by a certain percentage, carries out a wheel processing again in ditch pond.
In other alternative embodiments, above-mentioned sewage disposal system further includes control unit, control unit be used for
State first part discharge of sewage q1, second part discharge of sewage q2, Part III discharge of sewage q3, returned sludge flow q4, first
Partial fermentation flow quantity q5, second part fermentation liquid flow q6, second part mixing flow quantity q7It is controlled, above-mentioned each flow
Unit is cubic meter/day.
Optionally, above-mentioned control unit is according to the target dissolved oxygen content DO in pre- anoxic pondTWith practical dissolved oxygen content DOR, control
System is input to the returned sludge flow q of pre- anoxic pond4With first part discharge of sewage q1, so that target dissolved oxygen content DOTAnd reality
Dissolved oxygen content DORDifference in preset range.
Optionally, q1=k1* Q, 0.7≤k1≤1.0。
Optionally, q4=k4* Q, 0.5≤k4≤1.0。
Optionally, numerically DOT=q4/(q1+q4), unit mg/l.
Optionally, DOT< 0.5mg/l.
Optionally, above-mentioned control unit is according to the target dissolved oxygen content DO in pre- anoxic pondTWith practical dissolved oxygen content DOR, excellent
First control is input to the returned sludge flow q of pre- anoxic pond4, so that target dissolved oxygen content DOTWith practical dissolved oxygen content DORDifference
Value is in preset range.
Optionally, above-mentioned control unit is according to the desirable oxidation reduction potential ORP in anaerobic pond1TWith practical redox electricity
Position ORP1R, control the first part fermentation liquid flow q for being input to anaerobic pond5With second part discharge of sewage q2, so that target oxygen
Change reduction potential ORP1TWith practical oxidation-reduction potential ORP1RDifference in preset range.Optionally, it is input to the of anaerobic pond
A part of fermentation liquid flow q5With second part discharge of sewage q2It is inversely proportional with oxidation-reduction potential.
Optionally, q5=k5* Q, 0.01≤k5≤0.02。
Optionally, q2=k2* Q, 0≤k2≤0.3。
Optionally, above-mentioned control unit is according to the desirable oxidation reduction potential ORP in anaerobic pond1TWith practical redox electricity
Position ORP1R, priority acccess control is input to the first part fermentation liquid flow q of anaerobic pond5, so that desirable oxidation reduction potential ORP1TWith
Practical oxidation-reduction potential ORP1RDifference in preset range.
Optionally, above-mentioned control unit is according to the desirable oxidation reduction potential ORP in No. two ditches2TWith practical redox electricity
Position ORP2R, the Part III discharge of sewage q of control input No. two ditches3, second part fermentation liquid flow q6With by No.1 ditch
Flow back into the second part mixing flow quantity q of No. two ditches7, so that desirable oxidation reduction potential ORP2TWith practical oxidation-reduction potential
ORP2RDifference in preset range.
Optionally, q6=k6* Q, 0.01≤k6≤0.02。
Optionally, q7=k7* Q, 2≤k7≤4。
Optionally, q3=k3* Q, 0≤k3≤0.3。
Above-mentioned Q is the primary sedimentation tank discharge of sewage, and unit is cubic meter/day.
Optionally, first part discharge of sewage q is preferentially arranged in above-mentioned control unit1With second part discharge of sewage q2, third
Part of contaminated water flow q3=Q- (q1+q2)。
Optionally, above-mentioned control unit is according to the desirable oxidation reduction potential ORP in No. two ditches2TWith practical redox electricity
Position ORP2R, priority acccess control flows back into the second part mixing flow quantity q of No. two ditches by No.1 ditch7, so that desirable oxidation reduction electricity
Position ORP2TWith practical oxidation-reduction potential ORP2RDifference in preset range.Optionally, second part mixing flow quantity q7With
Two Partial fermentation flow quantity q6It is inversely proportional with oxidation-reduction potential.
The fermentation liquid that sludge fermentation device 3 generates is rich in short chain fatty acids (VFAs), is that biological denitrification denitrogenation is good
Carbon source.Optionally, the sludge that primary sedimentation tank 1 generates is transported to sludge fermentation device 3 by dredge pump and mud guiding tube.
Fig. 3 and Fig. 4 shows an alternative embodiment of sludge fermentation device.
In the alternative embodiment, sludge fermentation device 3 includes: tank body 111, and tank base 112 is inverted cone-shaped structure, tank body
112 settled sludge of bottom.Tank base 112 is provided with storage bucket 113, and mud mouth is arranged in the side wall or bottom for storing up bucket 113
117, for tank base sludge to be discharged.In embodiment illustrated in fig. 3, the side wall of storage bucket 113 is arranged in mud mouth 117.
111 top of tank body is provided with mud inlet 114, water inlet 115, liquid outlet 116.
Enters mud pipe array 131 is provided in tank body 111, the enters mud pipe array 131 includes multiple upright enters mud pipes
118, the bottom mud extraction of enters mud pipe 118, the top of enters mud pipe 118 is connected with the first main pipe 119, the first main pipe 119 with into mud
Mouth 114 is connected.Mud inlet 114 input from primary sedimentation tank sludge, sludge by the first main pipe 119 be transported to it is each into
Mud pipe 118, and it is assigned to from 118 bottom of enters mud pipe each position in tank body.
Optionally, enters mud pipe array 131 is linear type array, i.e., each 118 parallel arranged of enters mud pipe is in a row.
Optionally, the quantity of enters mud pipe array 131 is multiple, and multiple enters mud pipe arrays are staggered.Embodiment illustrated in fig. 4
In, the quantity of enters mud pipe array 131 is two, and two enters mud pipe arrays 131 are vertically staggered.
Water inlet pipe array 132 is additionally provided in tank body 111, water inlet pipe array 132 includes multiple upright water inlet pipes 120,
The bottom of water inlet pipe 120 is discharged, and the top of water inlet pipe 120 is connected with the second main pipe 121, the second main pipe 121 and water inlet 115
It is connected, water inlet 115 is inputted for the elutriation water with sludge mixed fermentation.Optionally, the elutriation water is sewage plant processing
The tap water of discharge water or municipal pipeline afterwards.
Optionally, the water inlet pipe array 132 is linear type array, i.e., each 120 parallel arranged of water inlet pipe is in a row.
Optionally, the quantity of water inlet pipe array 132 is multiple, and multiple water inlet pipe arrays are staggered.Embodiment illustrated in fig. 4
In, the quantity of water inlet pipe array 131 is two, and two water inlet pipe arrays 131 are vertically staggered.
Optionally, water inlet pipe array 132 and enters mud pipe array 131 are staggered.In embodiment illustrated in fig. 4, two water inlets
Pipe array 132 and two enters mud pipe arrays 131 are staggered.
It is provided with one at the top of 111 side wall of tank body and irises out liquid bath 122, liquid outlet groove 122 is U-shaped structure, the bottom of liquid outlet groove 122
Portion is provided with one or more and is connected to liquid outlet by pipeline for collecting the collector nozzle 123 of fermentation liquid, collector nozzle 123
116.In embodiment illustrated in fig. 4, the quantity of collector nozzle 123 is one, certainly, the quantity of collector nozzle 123 be also possible to it is multiple, it is more
A collector nozzle is evenly distributed in liquid outlet groove, and each collector nozzle is connected to the liquid outlet 116 on tank body top by pipeline.
The top of tank body 111 is additionally provided with the shelves slag plate annulus 138 being made of the upright shelves slag plate 124 of a circle, shelves slag plate
The diameter of annulus 138 is less than the diameter of liquid outlet groove 122 and keeps the 10-gaps 20cm with liquid outlet groove 122.
The top floating of fermentation liquid has one layer of dross, and shelves slag plate annulus 138 is for the dross at the top of fermentation liquid to be blocked in
Except liquid outlet groove 122, fermentation liquid spills into liquid outlet groove from the gap between shelves slag plate annulus 138 and liquid outlet groove 122, to guarantee to send out
Zymotic fluid is more limpid.
Optionally, the upper edge of shelves slag plate 124 is higher than the upper edge 10-30cm of liquid outlet groove 122.Optionally, shelves slag plate 124
Upper edge be higher than liquid outlet groove 122 upper edge 20cm.
Optionally, the lower edge of shelves slag plate 124 is lower than the upper edge 5-20cm of liquid outlet groove 122.Optionally, shelves slag plate 124
Lower edge be lower than liquid outlet groove 122 upper edge 10cm.
Optionally, the height of shelves slag plate 124 is 30-50cm.Optionally, the height of shelves slag plate 124 is 40cm.
Stirring pawl 125 is additionally provided in tank body 111, stirring pawl 125 drives rotation, shaft by the shaft 126 at tank body center
126 driving device is arranged in top of the tank.The bottom of stirring pawl 125 is provided with back taper compatible with tank base 112
The contrate 127 of structure is provided with multiple upright vertical teeth 128 upwards on contrate 127, founds tooth 128 and water inlet pipe 120 and enters mud pipe
118 are staggered.Stirring pawl 125 rotates clockwise or counterclockwise, for sufficiently mixing the sludge in tank body 111 with elutriation water
It closes uniform.
Optionally, stirring pawl 125 is arranged in tank body medium position.
Optionally, stirring pawl 125 is arranged in tank base position.
Optionally, founding tooth 128 is L-shaped structure, stands the tip of tooth 128 towards direction of rotation.
Optionally, sludge fermentation device further includes cleaning shoe 129, and cleaning shoe 129 is symmetrical blade construction, cleaning shoe
129 are arranged in the storage bucket 113 below stirring pawl 125 and are coaxially disposed with stirring pawl 129.While stirring the rotation of pawl 125,
Cleaning shoe 129 rotates coaxially, and keeps fluid state for making to store up the sludge in bucket 113, prevents mud mouth 117 from blocking.
Fig. 5 shows an alternative embodiment of enters mud pipe.
In the alternative embodiment, 118 bottom nozzle of enters mud pipe is the first mud inlet 133, the side of 118 bottom nozzle of enters mud pipe
Multiple second mud inlets 134 are additionally provided on wall.
Optionally, the aperture of the first mud inlet 133 is 8-12mm.Optionally, the aperture of the first mud inlet 133 is 10mm.
Optionally, the aperture of the second mud inlet 134 is 6-7mm.Optionally, the aperture of the second mud inlet 134 is 6mm.
Fig. 6 shows an alternative embodiment of water inlet pipe.
In the alternative embodiment, 120 bottom nozzle of water inlet pipe is the first water inlet 135, the side of 120 bottom nozzle of water inlet pipe
Multiple second water inlets 136 are additionally provided on wall.
Optionally, the aperture of the first water inlet 135 is 2-3mm.Optionally, the aperture of the second water inlet is 1-2mm.
Optionally, the first mud inlet 133 of 118 bottom of enters mud pipe is arranged in tank body 1/7-1/4 height and position.Tank body height
For the height from bottom inverted cone-shaped structure tip to top of the tank.Optionally, the setting of the first mud inlet 133 is in 1/5 height of tank body
Position.
Optionally, the first water inlet 135 of 120 bottom of water inlet pipe is arranged in tank body 1/6-1/3 height and position.Tank body height
For the height from bottom inverted cone-shaped structure tip to top of the tank.Optionally, the setting of the first water inlet 135 is in 1/4 height of tank body
Position.
In fermentation process, 111 top of tank body is fermentation liquid layer, and the fermentation liquid layer is liquid；It is fermentation in the middle part of tank body 111
Layer, fermentation layer are mud liquid mixed state；111 bottom of tank body is sludge blanket, and sludge blanket is the sludge of compacting.
The fermentation liquid that sludge fermentation device generates can be used as carbon source for subsequent biochemical treatment link, sewage treatment
System has saved cost without adding external carbon source.
In further embodiments, the application also proposed a kind of utilization internal carbon source denitrogenation dephosphorizing sewage based on oxidation ditch
Processing method handles sewage based on previously described sewage disposal system.
Sewage water treatment method includes: primary sedimentation tank treated sewage transport to oxidation ditch, and treated that sludge is defeated for primary sedimentation tank
It is sent to sludge fermentation device to ferment, the fermentation liquid that sludge fermentation device generates is transported to oxidation ditch, and oxidation ditch is to from just
The sewage in heavy pond and the fermentation liquid of sludge fermentation device are handled, and the mixed liquor of generation is transported to secondary settling tank, and secondary settling tank generates
Supernatant sterilized using sterilization pool after export, secondary settling tank generate sludge a portion flow back into oxidation ditch；
Wherein, pre- anoxic pond is to the returned sludge from the secondary settling tank and from first part's sewage of the primary sedimentation tank
Coagulation liquid is generated after carrying out pre- anoxic treatment, coagulation liquid is input to anaerobic pond by first through hole；
Anaerobic pond sends out the coagulation liquid from the pre- anoxic pond, the first part from the sludge fermentation device
Zymotic fluid and second part sewage from the primary sedimentation tank generate two stage treatment liquid after carrying out Anaerobic Treatment, and two stage treatment liquid passes through
Second through-hole is input to ditch pond；
Part III sewage from the primary sedimentation tank, the second part fermentation liquid from the sludge fermentation device and come
From the two stage treatment liquid of the anaerobic pond after No. two ditches mixing in ditch pond, successively pass through No. two ditches, No. three ditches, No. four ditches and one
Mixed liquor is generated after the processing of number ditch, first part's mixed liquor is output to the secondary settling tank in the outlet of the ditch pond of No.1 ditch tail end, the
Two part mixed liquors flow back into No. two ditches by No.1 ditch.
Optionally, above-mentioned sewage water treatment method further include: according to the target dissolved oxygen content DO in pre- anoxic pondTIt is molten with reality
Solve oxygen amount DOR, control the returned sludge flow q for being input to pre- anoxic pond4With first part discharge of sewage q1, so that target dissolves
Oxygen amount DOTWith practical dissolved oxygen content DORDifference in preset range.
Optionally, q1=k1* Q, 0.7≤k1≤1.0。
Optionally, q4=k4* Q, 0.5≤k4≤1.0。
Optionally, DOT=q4/(q1+q4)。
Optionally, DOT< 0.5mg/l.
Optionally, above-mentioned sewage water treatment method further include: according to the target dissolved oxygen content DO in pre- anoxic pondTIt is molten with reality
Solve oxygen amount DOR, priority acccess control is input to the returned sludge flow q of pre- anoxic pond4, so that target dissolved oxygen content DOTWith practical dissolution
Oxygen amount DORDifference in preset range.
Optionally, above-mentioned sewage water treatment method further include: according to the desirable oxidation reduction potential ORP in anaerobic pond1TWith reality
Border oxidation-reduction potential ORP1R, control the first part fermentation liquid flow q for being input to anaerobic pond5With the second part discharge of sewage
q2, so that desirable oxidation reduction potential ORP1TWith practical oxidation-reduction potential ORP1RDifference in preset range.Optionally, it inputs
To the first part fermentation liquid flow q of anaerobic pond5With second part discharge of sewage q2It is inversely proportional with oxidation-reduction potential.
Optionally, q5=k5* Q, 0.01≤k5≤0.02。
Optionally, q2=k2* Q, 0≤k2≤0.3。
Optionally, above-mentioned sewage water treatment method further include: according to the desirable oxidation reduction potential ORP in anaerobic pond1TWith reality
Border oxidation-reduction potential ORP1R, priority acccess control is input to the first part fermentation liquid flow q of anaerobic pond5, so that desirable oxidation is also
Former current potential ORP1TWith practical oxidation-reduction potential ORP1RDifference in preset range.
Optionally, above-mentioned sewage water treatment method further include: according to the desirable oxidation reduction potential ORP in No. two ditches2TWith reality
Border oxidation-reduction potential ORP2R, the Part III discharge of sewage q of control input No. two ditches3, second part fermentation liquid flow
q6With the second part mixing flow quantity q for flowing back into No. two ditches by No.1 ditch7, so that desirable oxidation reduction potential ORP2TWith reality
Oxidation-reduction potential ORP2RDifference in preset range.
Optionally, q6=k6* Q, 0.01≤k6≤0.02。
Optionally, q7=k7* Q, 2≤k7≤4。
Optionally, q3=k3* Q, 0≤k3≤0.3。
Above-mentioned Q is the primary sedimentation tank discharge of sewage, and unit is cubic meter/day.
Optionally, above-mentioned sewage water treatment method further include: preferential setting first part's discharge of sewage q1With second part dirt
Water flow q2, Part III discharge of sewage q3=Q- (q1+q2)。
Optionally, above-mentioned sewage water treatment method further include: according to the desirable oxidation reduction potential ORP in No. two ditches2TWith reality
Border oxidation-reduction potential ORP2R, priority acccess control flows back into the second part mixing flow quantity q of No. two ditches by No.1 ditch7, so that mesh
Mark oxidation-reduction potential ORP2TWith practical oxidation-reduction potential ORP2RDifference in preset range.Optionally, second part mixes
Flow quantity q7With second part fermentation liquid flow q6It is inversely proportional with oxidation-reduction potential.
The foregoing is merely the preferred embodiments of the application, all in the application spirit not to limit the application
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.
Claims (10)
1. a kind of utilize internal carbon source denitrogenation dephosphorizing sewage disposal system based on oxidation ditch characterized by comprising primary sedimentation tank,
Oxidation ditch, secondary settling tank, sludge fermentation device and sterilization pool；
Primary sedimentation tank treated sewage transport is to oxidation ditch, and treated that sludge is transported to sludge fermentation device is sent out for primary sedimentation tank
Ferment, the fermentation liquid that sludge fermentation device generates are transported to oxidation ditch, and oxidation ditch is to sewage and sludge fermentation dress from primary sedimentation tank
The fermentation liquid set is handled, and the mixed liquor of generation is transported to secondary settling tank, and the supernatant that secondary settling tank generates disappears using sterilization pool
It is exported after poison, sludge a portion that secondary settling tank generates flows back into oxidation ditch；
The oxidation ditch includes: pre- anoxic pond, anaerobic pond and Gou Chi, and pre- anoxic pond is connected to by first through hole with anaerobic pond, is detested
Oxygen pond is connected to ditch pond by the second through-hole；
Pre- anoxic pond includes one or more entrances, for receiving the returned sludge and the primary sedimentation tank of the secondary settling tank
First part's sewage, pre- anoxic pond generate level-one after carrying out pre- anoxic treatment to the returned sludge and first part's sewage
Treatment fluid, coagulation liquid are input to anaerobic pond by first through hole；
Anaerobic pond includes one or more entrances, for receiving the second part sewage and sludge hair of the primary sedimentation tank
First part's fermentation liquid of ferment device, anaerobic pond is to the coagulation liquid, first part's fermentation liquid and second described
Two stage treatment liquid is generated after dividing sewage to carry out Anaerobic Treatment, two stage treatment liquid is input to ditch pond by the second through-hole；
Chi Gou includes one or more entrances, for receive the primary sedimentation tank Part III sewage and the sludge fermentation
The second part fermentation liquid of device；It is provided with No. two ditches, No. three ditches, No. four ditches and the No.1 ditch of sequential communication in the ditch of pond, No. two
The head end of ditch is provided with the second through-hole being connected with anaerobic pond and ditch pond entrance, and the tail end setting ditch pond of No.1 ditch exports；It is defeated
Enter to after the Part III sewage, the second part fermentation liquid and the two stage treatment liquid mixing in ditch pond, successively passes through
Mixed liquor is generated after No. two ditches, No. three ditches, No. four ditches and the processing of No.1 ditch, first part's mixed liquor is in the ditch pond of No.1 ditch tail end
Outlet is output to the secondary settling tank, and second part mixed liquor flows back into No. two ditches by No.1 ditch.
2. a kind of as described in claim 1 utilize internal carbon source denitrogenation dephosphorizing sewage disposal system, feature based on oxidation ditch
It is,
The training wall for extending fluid path is provided in the anaerobic pond.
3. a kind of as described in claim 1 utilize internal carbon source denitrogenation dephosphorizing sewage disposal system, feature based on oxidation ditch
It is,
One in the pre- anoxic pond, the anaerobic pond, No. two ditches, No. three ditches or No. four ditches or
It is multiple to be provided with pushing flow mixer.
4. a kind of as described in claim 1 utilize internal carbon source denitrogenation dephosphorizing sewage disposal system, feature based on oxidation ditch
It is,
One or more setting aeration tube or aeration plate in No. three ditches, No. four ditches or the No.1 ditch.
5. a kind of utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method based on oxidation ditch, which is characterized in that based at a sewage
Reason system carries out sewage treatment, and the sewage disposal system includes: primary sedimentation tank, oxidation ditch, secondary settling tank, sludge fermentation device and disappears
Malicious pond；
The oxidation ditch includes: pre- anoxic pond, anaerobic pond and Gou Chi；Pre- anoxic pond is connected to anaerobic pond by first through hole, is detested
Oxygen pond is connected to ditch pond by the second through-hole；No. two ditches, No. three ditches, No. four ditches and the No.1 of sequential communication are provided in the ditch of pond
Ditch, the head end of No. two ditches are provided with the second through-hole being connected with anaerobic pond and ditch pond entrance, and ditch pond is arranged in the tail end of No.1 ditch
Outlet；
The described method includes:
Primary sedimentation tank treated sewage transport is to oxidation ditch, and treated that sludge is transported to sludge fermentation device is sent out for primary sedimentation tank
Ferment, the fermentation liquid that sludge fermentation device generates are transported to oxidation ditch, and oxidation ditch is to sewage and sludge fermentation dress from primary sedimentation tank
The fermentation liquid set is handled, and the mixed liquor of generation is transported to secondary settling tank, and the supernatant that secondary settling tank generates disappears using sterilization pool
It is exported after poison, sludge a portion that secondary settling tank generates flows back into oxidation ditch；
Wherein, pre- anoxic pond carries out the returned sludge from the secondary settling tank with first part's sewage from the primary sedimentation tank
Coagulation liquid is generated after pre- anoxic treatment, coagulation liquid is input to anaerobic pond by first through hole；
Anaerobic pond to from the pre- anoxic pond coagulation liquid, from first part's fermentation liquid of the sludge fermentation device
Two stage treatment liquid is generated after carrying out Anaerobic Treatment with the second part sewage from the primary sedimentation tank, two stage treatment liquid passes through second
Through-hole is input to ditch pond；
Part III sewage from the primary sedimentation tank, the second part fermentation liquid from the sludge fermentation device and come from institute
The two stage treatment liquid of anaerobic pond is stated after No. two ditches mixing in ditch pond, successively passes through No. two ditches, No. three ditches, No. four ditches and No.1 ditch
Mixed liquor is generated after processing, first part's mixed liquor exports in the ditch pond of No.1 ditch tail end and is output to the secondary settling tank, and second
Mixed liquor is divided to flow back into No. two ditches by No.1 ditch.
6. a kind of as claimed in claim 5 utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method, feature based on oxidation ditch
It is, further includes:
According to the target dissolved oxygen content and practical dissolved oxygen content in pre- anoxic pond, the reflux that control is input to the pre- anoxic pond is dirty
Mudflow amount and first part's discharge of sewage.
7. a kind of as claimed in claim 6 utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method, feature based on oxidation ditch
It is, according to the target dissolved oxygen content and practical dissolved oxygen content in pre- anoxic pond, priority acccess control is input to the pre- anoxic pond
Returned sludge flow.
8. a kind of as claimed in claim 5 utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method, feature based on oxidation ditch
It is, further includes:
According in anaerobic pond desirable oxidation reduction potential and practical oxidation-reduction potential, control and be input to the of the anaerobic pond
A part of fermentation liquid flow and the second part discharge of sewage.
9. a kind of as claimed in claim 8 utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method, feature based on oxidation ditch
Be, according in anaerobic pond desirable oxidation reduction potential and practical oxidation-reduction potential, priority acccess control is input to the anaerobism
First part's fermentation liquid flow in pond.
10. a kind of as claimed in claim 5 utilize internal carbon source denitrogenation dephosphorizing sewage water treatment method, feature based on oxidation ditch
It is, further includes:
According to the desirable oxidation reduction potential of No. two ditches and practical oxidation-reduction potential, control inputs the of No. two ditches
The three parts discharge of sewage, second part fermentation liquid flow and the second part mixing flow quantity that No. two ditches are flowed back by No.1 ditch.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117142728A (en) * | 2023-10-27 | 2023-12-01 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
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| CN117142728A (en) * | 2023-10-27 | 2023-12-01 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
| CN117142728B (en) * | 2023-10-27 | 2024-02-27 | 珙县华洁危险废物治理有限责任公司成都分公司 | Method for treating waste water after oil-based rock debris thermal desorption |
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