CN110066072A - Sewage treatment optimizes operating system under a kind of maximum discharge standard - Google Patents
Sewage treatment optimizes operating system under a kind of maximum discharge standard Download PDFInfo
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- CN110066072A CN110066072A CN201910405237.0A CN201910405237A CN110066072A CN 110066072 A CN110066072 A CN 110066072A CN 201910405237 A CN201910405237 A CN 201910405237A CN 110066072 A CN110066072 A CN 110066072A
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- 239000010865 sewage Substances 0.000 title claims abstract description 47
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 107
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 107
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 56
- 239000001301 oxygen Substances 0.000 claims abstract description 56
- 239000010802 sludge Substances 0.000 claims abstract description 42
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000126 substance Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000005457 optimization Methods 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 42
- 230000000694 effects Effects 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 36
- 206010002660 Anoxia Diseases 0.000 claims description 30
- 241000976983 Anoxia Species 0.000 claims description 30
- 206010021143 Hypoxia Diseases 0.000 claims description 30
- 230000007953 anoxia Effects 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 238000006396 nitration reaction Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 21
- 238000010992 reflux Methods 0.000 claims description 21
- 230000000813 microbial effect Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 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 claims description 17
- 239000003153 chemical reaction reagent Substances 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 claims description 12
- 238000013019 agitation Methods 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 5
- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims description 5
- 230000001112 coagulating effect Effects 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000013528 artificial neural network Methods 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 1
- 230000001546 nitrifying effect Effects 0.000 claims 1
- 244000005700 microbiome Species 0.000 description 35
- 230000008859 change Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 241001672694 Citrus reticulata Species 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 230000026676 system process Effects 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
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- 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
The present invention relates to sewage treatment optimization operating system and methods under a kind of maximum discharge standard, belong to technical field of sewage.The present invention includes pre- anoxic pond, anaerobic pond, anoxic pond, aerobic tank, selection pond, strengthens disappear oxygen pond, endogenous denitrification pond, rear anoxic pond, rear aerobic tank, secondary settling tank and advanced treatment unit, secondary settling tank to pre- anoxic pond is provided with sludge recirculation system, the end of aerobic tank is provided with online ammonia nitrogen instrument, anoxic pond is provided with rear anoxic pond carbon source dosing system afterwards, and advanced treatment unit is provided with chemical dephosphorization adding of agent system.The present invention takes setting to strengthen disappear oxygen pond control anoxic pond and the loss of rear anoxic pond carbon source, optimization carbon source toss area setting improves anoxic pond utilization rate of tank volume and makes full use of internal carbon source, and the setting denitrifying strengthened denitrification measure of endogenous denitrification pond enhanced endogenesis, and biological phosphate-eliminating efficiency is restored by optimization chemical dephosphorization adding of agent point setting.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to sewage treatment optimization operation system under a kind of maximum discharge standard
System.
Background technique
In recent years, the ground such as Beijing, Tianjin have been enacted and enforced in succession than existing national standards " urban wastewater treatment firm pollution
Object discharge standard " (GB18918-2002) more stringent local discharge standard, such as the Tianjin provincial standard promulgated in 2015
(DB12/599-2015), standard is divided into A, B, C three grades, wherein A standard is mentioned the emission limit of water outlet TN by 15mg/L
Height arrives 10mg/L, and requires from January 1st, 2018 that design scale is more than that the sewage treatment plant of 10,000 ton per days holds in administrative region
Row terrestrial reference A standard.
Bardenpho technique has many advantages, such as that nitric efficiency is high, internal reflux ratio is relatively low, saves power consumption, is current height
The prevailing technology that urban wastewater treatment firm proposes mark improvement project under discharge standard or new construction uses, but discovery is investigated, at present
Becoming a mandarin in Bardenpho process system operative practice there are still reflux nitrification liquid and rear anoxic pond, DO concentration is high, carbon source is damaged in vain
Consumption is serious, the setting of carbon source toss area is unreasonable, internal carbon source is underused, carbon source adds at high cost, chemical cooperated Dephosphorization reagent
It excessively adds and inhibits the outstanding problems such as biological phosphate-eliminating, lower, the blower unreasonable allocation of utilization rate of tank volume, need for current
Bardenpho process system proposes optimizing operation method, to instruct the engineering design of urban wastewater treatment firm under maximum discharge standard
With operational management.
For by the north, certain proposes mark improvement project using the sewage treatment plant of Bardenpho technique, status mainly runs and asks
Topic shows themselves in that 1. water-inlet carbon source wretched insufficiency, and according to statistics, cumulative frequency of the water inlet BOD5/TN lower than 4 is up to 64% within 2016；2. wind
Machine unreasonable allocation causes aerobic tank aeration quantity excessive, and then aerobic tank end DO is caused to be typically up to 6mg/L；3. reflux nitrification
Liquid and rear anoxic pond become a mandarin DO(6mg/L) cause carbon source to be lost in vain seriously, wherein reflux nitrification liquid DO leads to reflux in 220%
13.2mg/LCOD is up to than the loss of lower carbon source, and the rear anoxic pond DO that becomes a mandarin causes under 100% external reflux ratio outer carbon source to be lost to be up to
12mg/LCOD；4. anoxic pond carbon source toss area setting unreasonable (being arranged in the first anoxic pond) leads to anoxic pond utilization rate of tank volume
No more than 50%(nitrate nitrogen in the basic denitrification removal of the first anoxic pond), and then lead to sludge internal carbon source or even carbon of intaking
Source is not fully utilized；5. aerobic tank designs, pool capacity is bigger than normal to cause aerobic tank utilization rate of tank volume to be typically not greater than 70%；6. chemistry association
(PAC dosage is 133mg/L) is excessively added with Dephosphorization reagent leads to system inanimate object Removal.
Summary of the invention
Technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, provide a kind of maximum discharge mark
The lower sewage treatment of standard optimizes operating system.The present invention mainly takes setting to strengthen the oxygen pond that disappears, control anoxic pond and rear anoxic pond carbon
Source is lost in vain, and optimization carbon source toss area setting improves anoxic pond utilization rate of tank volume and makes full use of internal carbon source, and in setting
The denitrifying strengthened denitrification measure of source denitrification pond enhanced endogenesis, and life is restored by optimization chemical dephosphorization adding of agent point setting
Object Removal.Compared with existing system, the present invention, which has, runs that easy to operate, utilization of carbon source is high-efficient, strengthened denitrification and life
Object phosphor-removing effect is good, carbon source and the advantages that Dephosphorization reagent dosage significantly reduces, utilization rate of tank volume is high.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: sewage treatment is excellent under a kind of maximum discharge standard
Change operating system, which is characterized in that sewage treatment optimization operating system has the feature that
Sewage treatment optimizes operating system, including pre- anoxic pond, anaerobic pond, anoxic pond, aerobic tank, choosing under a kind of maximum discharge standard
It selects pond, strengthen disappear oxygen pond, endogenous denitrification pond, rear anoxic pond, rear aerobic tank, secondary settling tank and advanced treatment unit, wherein is pre- to lack
The outlet in oxygen pond and the import of anaerobic pond connect, and the outlet of anaerobic pond and the import of anoxic pond connect, the outlet of anoxic pond with it is good
The import in oxygen pond connects, and the outlet of aerobic tank is connect with the import in selection pond, and the outlet in pond and reinforcing is selected to disappear the import in oxygen pond
Connection, the outlet for strengthening the oxygen pond that disappears are connect with the import in endogenous denitrification pond, outlet and the rear anoxic pond in endogenous denitrification pond
Import connection, the outlet of rear anoxic pond are connect with the import of rear aerobic tank, and the outlet of rear aerobic tank and the import of secondary settling tank connect,
The outlet of secondary settling tank and the import of advanced treatment unit connect, and sludge reflux system is provided between the secondary settling tank and pre- anoxic pond
System, the end of aerobic tank are provided with online ammonia nitrogen instrument, and rear anoxic pond is provided with rear anoxic pond carbon source dosing system, advanced treating list
Member is provided with chemical dephosphorization adding of agent system.
The anoxic pond includes the first anoxic pond, the second anoxic pond and third anoxic pond, wherein the import of the first anoxic pond
Connect with the outlet of anaerobic pond, the outlet of the first anoxic pond is connect with the import of the second anoxic pond, the outlet of the second anoxic pond with
The import of third anoxic pond connects, and the outlet of third anoxic pond and the import of aerobic tank connect, described to strengthen the oxygen pond and first that disappears
Return-flow system in mixed liquor is provided between anoxic pond, the second anoxic pond end is provided with online nitrate nitrogen instrument.
The selection pond and reinforcing disappear the setting of oxygen pond at the unused pool capacity of former aerobic tank, wherein strengthening the water in the oxygen pond that disappears
The power residence time is 2.5 ~ 3h, selects the hydraulic detention time in pond for 0.5 ~ 1h.
The endogenous denitrification Chi Yuhou anoxic pond is formed by anoxic pond after segmentation original, the entrance of rear anoxic pond
It is provided with rear anoxic pond carbon source dosing system, wherein the hydraulic detention time in endogenous denitrification pond is 1 ~ 1.5h, rear anoxic pond
Hydraulic detention time is 0.5 ~ 1h.
The operation in the online ammonia nitrogen instrument guidance selection pond selects pond to run the oxygen mould that disappears as ammonia nitrogen concentration≤1.5mg/L
Formula selects pond to run aerobic mode as ammonia nitrogen concentration > 1.5mg/L.
The chemical dephosphorization adding of agent system passes through removal secondary clarifier effluent suspended solid mainly to ensure depth
It manages unit and is discharged total phosphorus≤0.3mg/L, be able to solve chemical cooperated Dephosphorization reagent and excessively add the problem of inhibiting biological phosphate-eliminating, from
And significantly reduce Dephosphorization reagent dosage.
The selection pond, reinforcing disappear oxygen pond and rear anoxic pond adds submersible agitator, the mixing for mud mixed liquid
Stirring.
The hydraulic detention time of second anoxic pond is 2 ~ 3h, the main denitrification strengthened denitrification for utilizing internal carbon source；The
The hydraulic detention time of three anoxic ponds is 1 ~ 2h, and anoxic pond carbon source dosing system is arranged in its entrance.
The online nitrate nitrogen instrument instructs the operation of anoxic pond carbon source dosing system, as nitrate nitrogen concentration≤0.2mg/L, closes
Anoxic pond carbon source dosing system, avoids carbon source from adding in vain.
The operation method of sewage treatment optimization operating system under the maximum discharge standard, comprising the following steps:
A, 10 ~ 50% biological tank water inlet enters pre- anoxic pond together with from the returned sludge of secondary settling tank, under the conditions of anoxia stirring
It stops 1 ~ 1.5 hour, mainly carries out anti-nitration reaction using water-inlet carbon source under microbial action and remove in returned sludge
Nitrate nitrogen, wherein sludge reflux amount is 0.5 ~ 1 times of the discharge of sewage；
B, pre- anoxic pond mixed liquor obtained by step a and 50 ~ 90% biological tank water inlet enter anaerobic pond together, in anaerobism stirring bar
It is stopped 1 ~ 1.5 hour under part, anaerobic phosphorus release reaction is carried out under microbial action；
C, anaerobic pond mixed liquor obtained by step b enters the first anoxic pond with from together with the reflux nitrification liquid for strengthening the oxygen pond end that disappears,
It is stopped 3 ~ 4 hours under the conditions of anoxia stirring, anti-nitration reaction is carried out using water-inlet carbon source under microbial action, wherein flowing back
The flow of nitrification liquid is 1 ~ 2 times of the discharge of sewage；
D, the first anoxic pond mixed liquor obtained by step c enters the second anoxic pond, stops 2 ~ 3 hours under the conditions of anoxia stirring,
Mainly endogenous denitrification reaction is carried out using sludge internal carbon source under microbial action to react with denitrification dephosphorization；
E, the second anoxic pond mixed liquor obtained by step d enters third anoxic pond, stops 1 ~ 2 hour under the conditions of anoxia stirring,
Anti-nitration reaction is carried out using outer carbon source under microbial action；
F, third anoxic pond mixed liquor obtained by step e enters aerobic tank, stops 8 ~ 9 hours under aerobic condition, makees in microorganism
Nitration reaction is substantially carried out under；
G, aerobic tank mixed liquor obtained by step f enters selection pond, as the ammonia nitrogen > 1.5mg/L that online ammonia nitrogen instrument is shown, operation
Aerobic mode stops 0.5 ~ 1 hour that is, under aerobic condition, nitration reaction is carried out under microbial action；When online ammonia nitrogen instrument
When ammonia nitrogen≤1.5mg/L of display, the oxygen mode that disappears is run, i.e., is stopped 0.5 ~ 1 hour under agitation, under microbial action
It carries out the biooxidation reactions of sludge internal carbon source and removes DO；
H, selection pond mixed liquor obtained by step g enters reinforcing and disappears oxygen pond, stops 2.5 ~ 3 hours under agitation, in microorganism
Effect is lower to be carried out the biooxidation reactions of sludge internal carbon source and removes DO；
I, the part for strengthening the oxygen pond mixed liquor that disappears obtained by step h enters endogenous denitrification pond as the charging in endogenous denitrification pond,
It is stopped 1 ~ 1.5 hour under the conditions of anoxia stirring, mainly carries out endogenous denitrification using sludge internal carbon source under microbial action
It reacts and strengthened denitrification, wherein the feed rate in endogenous denitrification pond is 1.5 ~ 2 times of the discharge of sewage；
J, endogenous denitrification pond mixed liquor obtained by step i enters rear anoxic pond, stops 0.5 ~ 1 hour under the conditions of anoxia stirring,
Anti-nitration reaction is carried out using outer carbon source under microbial action；
K, anoxic pond mixed liquor enters rear aerobic tank after step j gained, stops 0.5 ~ 1 hour under aerobic condition, in microorganism
The lower biooxidation reactions for carrying out organic matter of effect；
L, aerobic tank mixed liquor enters secondary settling tank after step k gained, carries out mud-water separation；
M, second pond supernatant obtained by step l enters successive depths processing unit as secondary effluent, under chemical dephosphorization medicament
It carries out coagulating sedimentation and removes suspended solid, then be used as Chinese effluent or regeneration after the processing of other advanced treatment units；
Wherein, the mixed genetic-neural network MLSS in step a is 4 ~ 10g/L, and the MLSS in step b ~ k is 3 ~ 4g/L.
Compared with prior art, the present invention has the advantages that:
The present invention is directed under current maximum discharge standard water-inlet carbon source present in the operation of existing Bardenpho process system seriously not
Foot, blower unreasonable allocation cause to flow back nitrification liquid and rear anoxic pond become a mandarin DO excessive concentration, carbon source be lost in vain seriously, carbon source
Toss area setting is unreasonable to lead to that internal carbon source (sludge internal carbon source PHB and water-inlet carbon source) is not fully utilized, carbon source adds cost
The problems such as high, chemical cooperated Dephosphorization reagent excessively adds inhibition biological phosphate-eliminating, utilization rate of tank volume is lower, mainly takes setting to strengthen
The oxygen pond control anoxic pond that disappears and rear anoxic pond carbon source are lost, and optimization carbon source toss area setting improves anoxic pond utilization rate of tank volume and fills
Divide and utilize internal carbon source, and the setting denitrifying strengthened denitrification measure of endogenous denitrification pond enhanced endogenesis, and is chemical by optimization
The setting of Dephosphorization reagent toss area restores biological phosphate-eliminating efficiency.
In terms of denitrogenation, the oxygen pond that disappears is not strengthened using pool capacity setting using former aerobic tank, in longer hydraulic detention time
Strengthen the DO that removal aerobic tank goes out higher concentration in water mixed liquid using the biological oxidation of sludge internal carbon source under (2.5 ~ 3h)
(6mg/L) controls its carbon source caused by anoxic pond and rear anoxic pond and is lost in vain；By optimization carbon source toss area, (carbon is set
Source toss area moves back), anoxic pond utilization rate of tank volume is improved, and then make full use of internal carbon source and water-inlet carbon source and strengthened denitrification, it is interior
For source denitrification strengthened denitrification amount at least up to 4mg/L, carbon source dosage can at least reduce 11mg/LCOD；By disappearing oxygen in reinforcing
Endogenous denitrification pond is set after pond, and further enhanced endogenesis denitrification denitrogenation, anoxic pond and rear anoxic pond carbon source are lost in vain
Control amount can reduce 25.2mg/LCOD up to 6mg/L, carbon source dosage up to 25.2mg/LCOD, strengthened denitrification amount；By setting
Setting online nitrate nitrogen instrument instructs carbon source to add, and solves the problems, such as that anoxic pond carbon source adds in vain；By the way that online ammonia nitrogen instrument guidance choosing is arranged
The determination for selecting pond operational mode gives full play to selection pond strengthened denitrification effect.
In terms of dephosphorization, depth (is changed to by rear aerobic tank water outlet by optimization chemical dephosphorization adding of agent point setting
Manage unit), restore biological phosphate-eliminating efficiency, solves the problems, such as that chemical cooperated Dephosphorization reagent excessively adds and inhibit biological phosphate-eliminating, and is significant
Chemical dephosphorization added amount of chemical is reduced, system biological Removal restores, and biological phosphor-removing effect is good, secondary effluent phosphoric acid
Salt is usually less than 0.1mg/L, while chemical dephosphorization added amount of chemical at least reduces by 70%.
In conclusion specific aim of the present invention and strong operability, can be urban wastewater treatment firm under China's maximum discharge standard
Minute design and operation provide with reference to and guidance, stably reaching standard to low ratio of carbon to ammonium, maximum discharge standard sewage treatment plant and
It is energy-saving to be of great significance.Compared with existing system, easy to operate, utilization of carbon source is high-efficient, strong with running by the present invention
Change denitrogenation and biological phosphor-removing effect is good, carbon source and the advantages that Dephosphorization reagent dosage significantly reduces, utilization rate of tank volume is high.
Detailed description of the invention
Fig. 1 is the process flow diagram of sewage treatment optimization operating system under maximum discharge standard of the present invention.
Fig. 2 is the process flow diagram using the raw sewage processing system of Bardenpho technique.
Description of symbols: the pre- anoxic pond of 1-；2- anaerobic pond；3- anoxic pond；The first anoxic pond of 3-1-；The second anoxic of 3-2-
Pond；3-3- third anoxic pond；4- aerobic tank；The first aerobic tank of 4-1；The second aerobic tank of 4-2-；5- selects pond；6- strengthens the oxygen that disappears
Pond；7- endogenous denitrification pond；Anoxic pond after 8-；Aerobic tank after 9-；10- secondary settling tank；11- advanced treatment unit；12-1- enters pre-
The biological tank of anoxic pond is intake；12-2- enters the biological tank water inlet of anaerobic pond；The water outlet of 13- advanced treatment unit；14- nitrification liquid
Return-flow system；15- secondary settling tank to pre- anoxic pond sludge recirculation system；The online nitrate nitrogen instrument of 16-；17- anoxic pond carbon source, which adds, is
System；The online ammonia nitrogen instrument of 18-；Anoxic pond carbon source dosing system after 19-；20- chemical dephosphorization adding of agent system.
Specific embodiment
As shown in Figure 1, under a kind of maximum discharge standard sewage treatment optimize operating system, including pre- anoxic pond 1, anaerobic pond 2,
Anoxic pond 3, selection pond 5, strengthens disappear oxygen pond 6, endogenous denitrification pond 7, rear anoxic pond 8, rear aerobic tank 9, secondary settling tank at aerobic tank 4
10 and advanced treatment unit 11, wherein the outlet of pre- anoxic pond 1 is connect with the import of anaerobic pond 2, the outlet of anaerobic pond 2 and is lacked
The import in oxygen pond 3 connects, and the outlet of anoxic pond 3 is connect with the import of aerobic tank 4, the import of the outlet and selection pond 5 of aerobic tank 4
Connection selects the disappear import in oxygen pond 6 of outlet and the reinforcing in pond 5 connect, and reinforcing disappears the outlet and endogenous denitrification pond 7 in oxygen pond 6
Import connection, the outlet in endogenous denitrification pond 7 are connect with the import of rear anoxic pond 8, the outlet of rear anoxic pond 8 and rear aerobic tank 9
Import connection, the outlet of rear aerobic tank 9 connect with the import of secondary settling tank 10, the outlet of secondary settling tank 10 and advanced treatment unit 11
Import connection, the secondary settling tank 10 to pre- anoxic pond 1 is provided with sludge recirculation system 15, and the end of aerobic tank 4 is provided with
Line ammonia nitrogen instrument 18, rear anoxic pond 8 are provided with rear anoxic pond carbon source dosing system 19, and advanced treatment unit 11 is provided with chemical dephosphorization
Adding of agent system 20.
The anoxic pond 3 includes the first anoxic pond 3-1, the second anoxic pond 3-2 and third anoxic pond 3-3, wherein first lacks
The import of oxygen pond 3-1 is connect with the outlet of anaerobic pond 2, and the outlet of the first anoxic pond 3-1 connects with the import of the second anoxic pond 3-2
It connects, the outlet of the second anoxic pond 3-2 is connect with the import of third anoxic pond 3-3, the outlet of third anoxic pond 3-3 and aerobic tank 4
Import connection, reinforcing 6 to the first anoxic pond 3-1 of oxygen pond that disappears is provided with return-flow system 14 in mixed liquor, the second anoxic pond
The end 3-2 is provided with online nitrate nitrogen instrument 16.
The selection pond 5 disappears the setting of oxygen pond 6 at the unused pool capacity of former aerobic tank with reinforcing, wherein strengthening the oxygen pond 6 that disappears
Hydraulic detention time be 2.5 ~ 3h, select the hydraulic detention time in pond 5 for 0.5 ~ 1h.
The endogenous denitrification pond 7 and rear anoxic pond 8 be by segmentation it is former after anoxic pond formed, rear anoxic pond 8 into
It is provided with rear anoxic pond carbon source dosing system 19 at mouthful, wherein the hydraulic detention time in endogenous denitrification pond 7 is 1 ~ 1.5h, rear to lack
The hydraulic detention time in oxygen pond 8 is 0.5 ~ 1h.
The operation in the online guidance of the ammonia nitrogen instrument 18 selection pond 5 selects the operation of pond 5 to disappear as ammonia nitrogen concentration≤1.5mg/L
Oxygen mode selects pond 5 to run aerobic mode as ammonia nitrogen > 1.5mg/L.
The chemical dephosphorization adding of agent system 20 is mainly discharged suspended solid by removal secondary settling tank 10 to ensure depth
It spends processing unit 11 and is discharged total phosphorus≤0.3mg/L, be able to solve chemical cooperated Dephosphorization reagent and excessively add inhibition biological phosphate-eliminating
Problem, to significantly reduce Dephosphorization reagent dosage.
Submersible agitator is added in the selection pond 5, for the mixing of mud mixed liquid under the oxygen mode operation that disappears, and
Its aerating system should realize independent control using gate valve；Reinforcing disappears oxygen pond 6 and rear anoxic pond 8 adds submersible agitator, is used for
The mixing of mud mixed liquid.
The hydraulic detention time of the second anoxic pond 3-2 is 2 ~ 3h, the main denitrification strengthened denitrification for utilizing internal carbon source；
The hydraulic detention time of third anoxic pond 3-3 is 1 ~ 2h, and anoxic pond carbon source dosing system 17 is arranged in its entrance.
The online nitrate nitrogen instrument 16 instructs the operation of anoxic pond carbon source dosing system 17, as nitrate nitrogen concentration≤0.2mg/L,
Anoxic pond carbon source dosing system 17 is closed, carbon source is avoided to add in vain.
Fig. 2 is the raw sewage processing system process flow diagram using Bardenpho technique, Bardenpho technique
Raw sewage processing system includes two aerobic tanks of the first aerobic tank 4-1 and the second aerobic tank 4-2, wherein nitrification liquid return-flow system 14
Setting is arranged in the second end aerobic tank 4-2 to the first anoxic pond 3-1, anoxic pond carbon source dosing system 17 in the first anoxic pond 3-
1 entrance, chemical dephosphorization adding of agent system 20 are arranged in rear 9 end of aerobic tank.
Embodiment 1:
The operation method of sewage treatment optimization operating system under a kind of maximum discharge standard, comprising the following steps:
A, 50% biological tank water inlet 12-1 enters pre- anoxic pond 1 with the returned sludge 15 from secondary settling tank together, in anoxia stirring item
It is stopped 1.5 hours under part, it is main under microorganism (MLSS 4g/L) effect to carry out anti-nitration reaction using water-inlet carbon source and go
Except the nitrate nitrogen in returned sludge, wherein sludge reflux amount is 1 times of the discharge of sewage；
B, pre- anoxic pond mixed liquor obtained by step a and 50% biological tank water inlet 12-2 enter anaerobic pond 2 together, stir in anaerobism
Under the conditions of stop 1.5 hours, in the lower progress anaerobic phosphorus release reaction of microorganism (MLSS 3g/L) effect；
C, anaerobic pond mixed liquor obtained by step b enters the first anoxic pond with from the reflux nitrification liquid 14 for strengthening the oxygen pond end that disappears together
3-1 is stopped 4 hours under the conditions of anoxia stirring, carries out anti-nitre using water-inlet carbon source under microorganism (MLSS 3g/L) effect
Change reaction, wherein the flow of reflux nitrification liquid is 2 times of the discharge of sewage；
D, the first anoxic pond 3-1 mixed liquor obtained by step c enters the second anoxic pond 3-2, and it is small that 2 are stopped under the conditions of anoxia stirring
When, it is main under microorganism (MLSS 3g/L) effect to carry out endogenous denitrification reaction and denitrification dephosphorization using sludge internal carbon source
Reaction；
E, the second anoxic pond 3-2 mixed liquor obtained by step d enters third anoxic pond 3-3, and it is small that 2 are stopped under the conditions of anoxia stirring
When, anti-nitration reaction is carried out using outer carbon source under microorganism (MLSS 3g/L) effect；
F, third anoxic pond 3-3 mixed liquor obtained by step e enters aerobic tank 4, stops 9 hours under aerobic condition, in microorganism
Nitration reaction is substantially carried out under (MLSS 3g/L) effect；
G, aerobic tank mixed liquor obtained by step f enters selection pond 5, stops 0.5 hour under agitation, in microorganism (MLSS
The lower biooxidation reactions for carrying out sludge internal carbon source are acted on for 3g/L) and remove DO, at this time the ammonia nitrogen of the online display of ammonia nitrogen instrument 18
Concentration≤1.5mg/L；
H, selection pond mixed liquor obtained by step g enters reinforcing and disappears oxygen pond 6, stops 2.5 hours under agitation, in microorganism
(MLSS 3g/L) effect is lower to be carried out the biooxidation reactions of sludge internal carbon source and removes DO；
I, strengthen the 50% of the oxygen pond mixed liquor that disappears obtained by step h as the charging in endogenous denitrification pond and enter endogenous denitrification pond 7,
It is stopped 1.5 hours under the conditions of anoxia stirring, it is main under microorganism (MLSS 3g/L) effect to be carried out using sludge internal carbon source
Endogenous denitrification reacts and strengthened denitrification, and wherein the feed rate in endogenous denitrification pond is 2 times of the discharge of sewage；
J, endogenous denitrification pond mixed liquor obtained by step i enters rear anoxic pond 8, stops 0.5 hour under the conditions of anoxia stirring,
Microorganism (MLSS 3g/L) effect is lower to carry out anti-nitration reaction using outer carbon source；
K, anoxic pond mixed liquor enters rear aerobic tank 9 after step j gained, stops 0.5 hour under aerobic condition, in microorganism
The lower biooxidation reactions for carrying out organic matter of (MLSS 3g/L) effect；
L, aerobic tank mixed liquor enters secondary settling tank 10 after step k gained, carries out mud-water separation；
M, second pond supernatant obtained by step l enters successive depths processing unit 11 as secondary effluent, in chemical dephosphorization medicament
20 it is lower carry out coagulating sedimentation and remove suspended solid, then as 13 discharge of water outlet or regeneration after the processing of other advanced treatment units
It utilizes.
Embodiment 2
The operation method of sewage treatment optimization operating system under a kind of maximum discharge standard, comprising the following steps:
A, 50% biological tank water inlet 12-1 enters pre- anoxic pond 1 with the returned sludge 15 from secondary settling tank together, in anoxia stirring item
It is stopped 1 hour under part, it is main under microorganism (MLSS 6g/L) effect to carry out anti-nitration reaction using water-inlet carbon source and remove
Nitrate nitrogen in returned sludge, wherein sludge reflux amount is 0.5 times of the discharge of sewage；
B, pre- anoxic pond mixed liquor obtained by step a and 50% biological tank water inlet 12-2 enter anaerobic pond 2 together, stir in anaerobism
Under the conditions of stop 1 hour, in the lower progress anaerobic phosphorus release reaction of microorganism (MLSS 4g/L) effect；
C, anaerobic pond mixed liquor obtained by step b enters the first anoxic pond with from the reflux nitrification liquid 14 for strengthening the oxygen pond end that disappears together
3-1 is stopped 3 hours under the conditions of anoxia stirring, carries out anti-nitre using water-inlet carbon source under microorganism (MLSS 4g/L) effect
Change reaction, wherein the flow of reflux nitrification liquid is 2 times of the discharge of sewage；
D, the first anoxic pond 3-1 mixed liquor obtained by step c enters the second anoxic pond 3-2, and it is small that 2 are stopped under the conditions of anoxia stirring
When, it is main under microorganism (MLSS 4g/L) effect to carry out endogenous denitrification reaction and denitrification dephosphorization using sludge internal carbon source
Reaction；
E, the second anoxic pond 3-2 mixed liquor obtained by step d enters third anoxic pond 3-3, and it is small that 1 is stopped under the conditions of anoxia stirring
When, anti-nitration reaction is carried out using outer carbon source under microorganism (MLSS 4g/L) effect；
F, third anoxic pond 3-3 mixed liquor obtained by step e enters aerobic tank 4, stops 9 hours under aerobic condition, in microorganism
Nitration reaction is substantially carried out under (MLSS 4g/L) effect；
G, aerobic tank mixed liquor obtained by step f enters selection pond 5, stops 1 hour under aerobic condition, and in microorganism, (MLSS is
4g/L) effect is lower carries out nitration reaction, the ammonia nitrogen concentration > 1.5mg/L that online ammonia nitrogen instrument 18 is shown at this time；
H, selection pond mixed liquor obtained by step g enters reinforcing and disappears oxygen pond 6, stops 3 hours under agitation, in microorganism
(MLSS 4g/L) effect is lower to be carried out the biooxidation reactions of sludge internal carbon source and removes DO；
I, strengthen the 43% of the oxygen pond mixed liquor that disappears obtained by step h as the charging in endogenous denitrification pond and enter endogenous denitrification pond 7,
It is stopped 1 hour under the conditions of anoxia stirring, it is main using in sludge internal carbon source progress under microorganism (MLSS 4g/L) effect
Source anti-nitration reaction and strengthened denitrification, wherein the feed rate in endogenous denitrification pond is 1.5 times of the discharge of sewage；
J, endogenous denitrification pond mixed liquor obtained by step i enters rear anoxic pond 8, stops 1 hour under the conditions of anoxia stirring, micro-
Biological (MLSS 4g/L) effect is lower to carry out anti-nitration reaction using outer carbon source；
K, anoxic pond mixed liquor enters rear aerobic tank 9 after step j gained, stops 1 hour under aerobic condition, in microorganism
The lower biooxidation reactions for carrying out organic matter of (MLSS 4g/L) effect；
L, aerobic tank mixed liquor enters secondary settling tank 10 after step k gained, carries out mud-water separation;
M, second pond supernatant obtained by step l enters successive depths processing unit 11 as secondary effluent, in chemical dephosphorization medicament
20 it is lower carry out coagulating sedimentation and remove suspended solid, then as 13 discharge of water outlet or regeneration after the processing of other advanced treatment units
It utilizes.
Embodiment 3
The operation method of sewage treatment optimization operating system under a kind of maximum discharge standard, comprising the following steps:
A, 10% biological tank water inlet 12-1 enters pre- anoxic pond 1 with the returned sludge 15 from secondary settling tank together, in anoxia stirring item
It is stopped 1 hour under part, it is main under microorganism (MLSS 7g/L) effect to carry out anti-nitration reaction using water-inlet carbon source and remove
Nitrate nitrogen in returned sludge, wherein sludge reflux amount is 1 times of the discharge of sewage；
B, pre- anoxic pond mixed liquor obtained by step a and 90% biological tank water inlet 12-2 enter anaerobic pond 2 together, stir in anaerobism
Under the conditions of stop 1 ~ 1.5 hour, in the lower progress anaerobic phosphorus release reaction of microorganism (MLSS 4g/L) effect；
C, anaerobic pond mixed liquor obtained by step b enters the first anoxic pond with from the reflux nitrification liquid 14 for strengthening the oxygen pond end that disappears together
3-1 is stopped 3 hours under the conditions of anoxia stirring, carries out anti-nitre using water-inlet carbon source under microorganism (MLSS 4g/L) effect
Change reaction, wherein the flow of reflux nitrification liquid is 1 times of the discharge of sewage；
D, the first anoxic pond 3-1 mixed liquor obtained by step c enters the second anoxic pond 3-2, and it is small that 2 are stopped under the conditions of anoxia stirring
When, it is main under microorganism (MLSS 4g/L) effect to carry out endogenous denitrification reaction and denitrification dephosphorization using sludge internal carbon source
Reaction；
E, the second anoxic pond 3-2 mixed liquor obtained by step d enters third anoxic pond 3-3, and it is small that 1 is stopped under the conditions of anoxia stirring
When, anti-nitration reaction is carried out using outer carbon source under microorganism (MLSS 4g/L) effect；
F, third anoxic pond 3-3 mixed liquor obtained by step e enters aerobic tank 4, stops 8 hours under aerobic condition, in microorganism
Nitration reaction is substantially carried out under (MLSS 4g/L) effect；
G, aerobic tank mixed liquor obtained by step f enters selection pond 5, stops 0.5 hour under agitation, in microorganism (MLSS
The lower biooxidation reactions for carrying out sludge internal carbon source are acted on for 4g/L) and remove DO, the online ammonia nitrogen of aerobic tank end setting at this time
Ammonia nitrogen concentration≤1.5mg/L that instrument 18 is shown；
H, selection pond mixed liquor obtained by step g enters reinforcing and disappears oxygen pond 6, stops 3 hours under agitation, in microorganism
(MLSS 4g/L) effect is lower to be carried out the biooxidation reactions of sludge internal carbon source and removes DO；
I, strengthen the 67% of the oxygen pond mixed liquor that disappears obtained by step h as the charging in endogenous denitrification pond and enter endogenous denitrification pond 7,
It is stopped 1.5 hours under the conditions of anoxia stirring, it is main under microorganism (MLSS 4g/L) effect to be carried out using sludge internal carbon source
Endogenous denitrification reacts and strengthened denitrification, and wherein the feed rate in endogenous denitrification pond is 2 times of the discharge of sewage；
J, endogenous denitrification pond mixed liquor obtained by step i enters rear anoxic pond 8, stops 0.5 hour under the conditions of anoxia stirring,
Microorganism (MLSS 4g/L) effect is lower to carry out anti-nitration reaction using outer carbon source；
K, anoxic pond mixed liquor enters rear aerobic tank 9 after step j gained, stops 1 hour under aerobic condition, in microorganism
The lower biooxidation reactions for carrying out organic matter of (MLSS 4g/L) effect；
L, aerobic tank mixed liquor enters secondary settling tank 10 after step k gained, carries out mud-water separation;
M, second pond supernatant obtained by step l enters successive depths processing unit 11 as secondary effluent, in chemical dephosphorization medicament
20 it is lower carry out coagulating sedimentation and remove suspended solid, then as 13 discharge of water outlet or regeneration after the processing of other advanced treatment units
It utilizes.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way.It is all according to the present invention
Essence any simple modification, change and equivalence change to the above embodiments, still fall within technical solution of the present invention
In protection scope.
Claims (10)
1. sewage treatment optimizes operating system, including pre- anoxic pond (1), anaerobic pond (2), anoxic pond under a kind of maximum discharge standard
(3), aerobic tank (4), selection pond (5), strengthen and disappear oxygen pond (6), endogenous denitrification pond (7), rear anoxic pond (8), rear aerobic tank
(9), secondary settling tank (10) and advanced treatment unit (11), wherein the outlet of pre- anoxic pond (1) is connect with the import of anaerobic pond (2),
The outlet of anaerobic pond (2) is connect with the import of anoxic pond (3), and the outlet of anoxic pond (3) is connect with the import of aerobic tank (4), good
The outlet in oxygen pond (4) connect with the import of selection pond (5), and the disappear import in oxygen pond (6) of outlet and the reinforcing of selection pond (5) is connect,
The outlet for strengthening the oxygen pond (6) that disappears is connect with the import of endogenous denitrification pond (7), the outlet and rear anoxic of endogenous denitrification pond (7)
The import in pond (8) connects, and the outlet of rear anoxic pond (8) is connect with the import of rear aerobic tank (9), the outlet of rear aerobic tank (9) and
The import of secondary settling tank (10) connects, and the outlet of secondary settling tank (10) is connect with the import of advanced treatment unit (11), which is characterized in that
It is provided between the secondary settling tank (10) and pre- anoxic pond (1) sludge recirculation system (15), the end of aerobic tank (4) is provided with online
Ammonia nitrogen instrument (18), rear anoxic pond (8) are provided with rear anoxic pond carbon source dosing system (19), advanced treatment unit (11) being provided with
It learns Dephosphorization reagent dosing system (20).
2. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that the anoxic
Pond (3) includes the first anoxic pond (3-1), the second anoxic pond (3-2) and third anoxic pond (3-3), wherein the first anoxic pond (3-1)
Import connect with the outlet of anaerobic pond (2), the outlet of the first anoxic pond (3-1) is connect with the import of the second anoxic pond (3-2),
The outlet of second anoxic pond (3-2) is connect with the import of third anoxic pond (3-3), the outlet of third anoxic pond (3-3) with it is aerobic
The import in pond (4) connects, and the reinforcing, which disappears, is provided with return-flow system in mixed liquor between oxygen pond (6) and the first anoxic pond (3-1)
(14), the end the second anoxic pond (3-2) is provided with online nitrate nitrogen instrument (16).
3. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that the selection
Pond (5) and reinforcing disappear oxygen pond (6) setting at the unused pool capacity of former aerobic tank, wherein strengthening the hydraulic retention for oxygen pond (6) that disappear
Time is 2.5 ~ 3h, and selecting the hydraulic detention time in pond (5) is 0.5 ~ 1h.
4. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that described endogenous
Denitrification pond (7) and rear anoxic pond (8) are formed by anoxic pond after segmentation original, and the entrance of rear anoxic pond (8) is provided with
Anoxic pond carbon source dosing system (19) afterwards, wherein the hydraulic detention time of endogenous denitrification pond (7) is 1 ~ 1.5h, rear anoxic pond
(8) hydraulic detention time is 0.5 ~ 1h.
5. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that described online
The operation of ammonia nitrogen instrument (18) guidance selection pond (5) selects pond (5) to run the oxygen mode that disappears as ammonia nitrogen concentration≤1.5mg/L, when
When ammonia nitrogen concentration > 1.5mg/L, pond (5) is selected to run aerobic mode.
6. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that the chemistry
Dephosphorization reagent dosing system (20) is mainly discharged suspended solid by removal secondary settling tank (10) to ensure advanced treatment unit
(11) it is discharged total phosphorus≤0.3mg/L, chemical cooperated Dephosphorization reagent is able to solve and excessively adds the problem of inhibiting biological phosphate-eliminating, thus
Significantly reduce Dephosphorization reagent dosage.
7. sewage treatment optimizes operating system under maximum discharge standard according to claim 1, which is characterized in that the selection
Pond (5), reinforcing disappear oxygen pond (6) and rear anoxic pond (8) adds submersible agitator, the mixing for mud mixed liquid.
8. sewage treatment optimizes operating system under maximum discharge standard according to claim 2, which is characterized in that described second
The hydraulic detention time of anoxic pond (3-2) is 2-3h, the main denitrification strengthened denitrification for utilizing internal carbon source；Third anoxic pond (3-
3) hydraulic detention time is 1 ~ 2h, and anoxic pond carbon source dosing system (17) is arranged in its entrance.
9. sewage treatment optimizes operating system under maximum discharge standard according to claim 2, which is characterized in that described online
Nitrate nitrogen instrument (16) instructs the operation of anoxic pond carbon source dosing system (17), as nitrate nitrogen concentration≤0.2mg/L, closes anoxic pond carbon
Source dosing system (17), avoids carbon source from adding in vain.
10. the operation method of sewage treatment optimization operating system, feature under maximum discharge standard described according to claim 1 ~ 9
It is, comprising the following steps:
A, 10 ~ 50% biological tank water inlet (12-1) enters pre- anoxic pond (1) together with the returned sludge (15) from secondary settling tank,
It is stopped 1 ~ 1.5 hour under the conditions of anoxia stirring, mainly carries out anti-nitration reaction using water-inlet carbon source under microbial action and go
Except the nitrate nitrogen in returned sludge, wherein sludge reflux amount is 0.5 ~ 1 times of the discharge of sewage；
B, pre- anoxic pond mixed liquor obtained by step a and 50 ~ 90% biological tank water inlet (12-2) enter anaerobic pond (2) together, are detesting
It is stopped 1 ~ 1.5 hour under oxygen stirring condition, anaerobic phosphorus release reaction is carried out under microbial action；
C, anaerobic pond mixed liquor obtained by step b enters the first anoxic with from the reflux nitrification liquid (14) for strengthening the oxygen pond end that disappears together
Pond (3-1) stops 3 ~ 4 hours under the conditions of anoxia stirring, carries out anti-nitration reaction using water-inlet carbon source under microbial action,
Wherein the flow of reflux nitrification liquid is 1 ~ 2 times of the discharge of sewage；
D, the first anoxic pond (3-1) mixed liquor obtained by step c enters the second anoxic pond (3-2), stops 2 under the conditions of anoxia stirring
~ 3 hours, endogenous denitrification reaction mainly was carried out using sludge internal carbon source under microbial action and is reacted with denitrification dephosphorization；
E, the second anoxic pond (3-2) mixed liquor obtained by step d enters third anoxic pond (3-3), stops 1 under the conditions of anoxia stirring
~ 2 hours, anti-nitration reaction was carried out using outer carbon source under microbial action；
F, third anoxic pond (3-3) mixed liquor obtained by step e enters aerobic tank (4), stops 8 ~ 9 hours under aerobic condition,
Nitration reaction is substantially carried out under microbial action；
G, aerobic tank (4) mixed liquor obtained by step f enters selection pond (5), as the ammonia nitrogen > of online ammonia nitrogen instrument (18) display
When 1.5mg/L, aerobic mode is run, i.e., is stopped 0.5 ~ 1 hour under aerobic condition, carries out nitrifying under microbial action anti-
It answers；As ammonia nitrogen≤1.5mg/L that online ammonia nitrogen instrument is shown, the oxygen mode that disappears is run, i.e., it is small to stop 0.5 ~ 1 under agitation
When, the biooxidation reactions of sludge internal carbon source are carried out under microbial action and remove DO；
H, selection pond mixed liquor obtained by step g enters reinforcing and disappears oxygen pond (6), stops 2.5 ~ 3 hours under agitation, in micro- life
Object effect is lower to be carried out the biooxidation reactions of sludge internal carbon source and removes DO；
I, the part for strengthening the oxygen pond mixed liquor that disappears obtained by step h enters endogenous denitrification pond as the charging in endogenous denitrification pond
(7), it stops 1 ~ 1.5 hour, is mainly carried out using sludge internal carbon source under microbial action endogenous anti-under the conditions of anoxia stirring
Nitration reaction and strengthened denitrification, wherein the feed rate in endogenous denitrification pond is 1.5 ~ 2 times of the discharge of sewage；
J, endogenous denitrification pond mixed liquor obtained by step i enters rear anoxic pond (8), and it is small that 0.5 ~ 1 is stopped under the conditions of anoxia stirring
When, anti-nitration reaction is carried out using outer carbon source under microbial action；
K, anoxic pond mixed liquor enters rear aerobic tank (9) after step j gained, stops 0.5 ~ 1 hour under aerobic condition, in micro- life
The lower biooxidation reactions for carrying out organic matter of object effect；
L, aerobic tank mixed liquor enters secondary settling tank (10) after step k gained, carries out mud-water separation；
M, second pond supernatant obtained by step l enters successive depths processing unit (11) as secondary effluent, in chemical dephosphorization medicine
Coagulating sedimentation is carried out under agent (20) and removes suspended solid, then as water outlet (13) discharge after the processing of other advanced treatment units
Or regeneration；
Wherein, the mixed genetic-neural network MLSS in step a is 4 ~ 10g/L, and the MLSS in step b ~ k is 3 ~ 4g/L.
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| CN113023889A (en) * | 2021-03-16 | 2021-06-25 | 北控水务(中国)投资有限公司 | Carbon source adding optimization control system and method for AOA + MABR coupling process |
| CN113044973A (en) * | 2021-03-18 | 2021-06-29 | 苏州美淼环保科技有限公司 | Sewage treatment control system and effluent TN control method |
| CN115432818A (en) * | 2021-06-03 | 2022-12-06 | 北京大有汇泽科技有限公司 | Enhanced denitrification biological treatment method for sewage |
| CN113845218A (en) * | 2021-08-24 | 2021-12-28 | 无锡惠山环保水务有限公司 | Multistage AO sewage treatment system and process thereof |
| CN114671526A (en) * | 2022-04-12 | 2022-06-28 | 中国市政工程华北设计研究总院有限公司 | Method for recovering biological phosphorus removal function of chemical synergistic phosphorus removal sewage treatment system |
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