CN110002686A - It is a kind of to be changed to strengthen the sewage treatment optimization operating system of degassing district based on anaerobic pond - Google Patents
It is a kind of to be changed to strengthen the sewage treatment optimization operating system of degassing district based on anaerobic pond Download PDFInfo
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- CN110002686A CN110002686A CN201910364423.4A CN201910364423A CN110002686A CN 110002686 A CN110002686 A CN 110002686A CN 201910364423 A CN201910364423 A CN 201910364423A CN 110002686 A CN110002686 A CN 110002686A
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- degassing district
- anoxic pond
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- aerobic tank
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- 238000007872 degassing Methods 0.000 title claims abstract description 104
- 239000010865 sewage Substances 0.000 title claims abstract description 47
- 238000005457 optimization Methods 0.000 title claims description 12
- 239000010802 sludge Substances 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 30
- 238000010992 reflux Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 25
- 239000010452 phosphate Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 25
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 20
- 238000005728 strengthening Methods 0.000 claims abstract description 8
- 239000003814 drug Substances 0.000 claims abstract description 7
- 238000005265 energy consumption Methods 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 29
- 244000005700 microbiome Species 0.000 claims description 27
- 238000006396 nitration reaction Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 239000005416 organic matter Substances 0.000 claims description 17
- 206010002660 Anoxia Diseases 0.000 claims description 15
- 241000976983 Anoxia Species 0.000 claims description 15
- 206010021143 Hypoxia Diseases 0.000 claims description 15
- 230000007953 anoxia Effects 0.000 claims description 15
- 238000007667 floating Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 230000000813 microbial effect Effects 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 238000013019 agitation Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 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
- 230000008859 change Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000013528 artificial neural network Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 1
- 238000013461 design Methods 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 239000000945 filler Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000002699 waste material 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- 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
-
- 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
Abstract
The invention belongs to technical field of sewage.Sewage treatment of the invention optimizes operating system, including strengthening degassing district, anoxic pond, aerobic tank, degassing district, exhalant region, secondary settling tank and biological tank water inlet system, anoxic pond is provided with carbon source dosing system, exhalant region is provided with chemical cooperated dephosphorization medicine system, strengthen degassing district to connect with anoxic pond, anoxic pond is connect with aerobic tank, aerobic tank is connect with degassing district, degassing district is connect with exhalant region, nitrification liquid return-flow system is provided between degassing district and reinforcing degassing district, sludge recirculation system is provided between secondary settling tank and reinforcing degassing district, online phosphate instrument is provided at biological tank water inlet system, strengthen degassing district to be changed to by anaerobic pond, charging is reflux nitrification liquid and returned sludge.The present invention, which has the advantages that operation is easy to operate, utilization of carbon source is high-efficient, strengthened denitrification effect is good, carbon source adds cost, reduces significant, Dephosphorization reagent dosage is low, operation energy consumption is low etc..
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of to be changed to strengthen the sewage of degassing district based on anaerobic pond
Processing optimization operating 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.
Industrial park sewage treatment plant is important facility for the central disposal, is the important link of water prevention and cure of pollution, but current
Generally existing water-inlet carbon source wretched insufficiency, DO lead to carbon in the operation of China industrial park sewage treatment plant under maximum discharge standard requirements
The invalid waste in source is big, anaerobic phosphorus release, fine-grained management level be not low for anaerobic pond, the excessively high outstanding problem of energy and material consumption, needs
It is proposed maximum discharge standard under industrial park sewage treatment plant optimizing operation method, with instruct its stably reaching standard with it is energy-saving.
By taking certain northern industrial park sewage treatment plant as an example, design agents technique is UCT technique, the main operation problem of status
Show themselves in that 1. water-inlet carbon source wretched insufficiency, cumulative frequency of the BOD5/TN lower than 4 of intaking according to statistics, in 1 year is up to 88%；2. good
Oxygen pond (adding floating stuffing) aeration quantity is excessive to cause the nitrification liquid DO to flow back from degassing district to be still up to about 7mg/L, and then causes
Carbon source loss is up to 14mg/LCOD under 200% internal reflux ratio；3. returned sludge is in reflux course since drop reoxygenation effect is led
It causes returned sludge usually containing the DO of 2-3mg/L, and then causes carbon source under 100% external reflux ratio that 2-3 mg/L COD is lost
COD；4. anoxic pond designs, hydraulic detention time is (3h) less than normal, along with the interior reflux of anoxic pond to anaerobic pond under UCT technique is (existing
About 150%) shape internal reflux ratio, is further exacerbated by the problem of the practical hydraulic detention time deficiency of anoxic pond, and then influence its denitrogenation effect
Energy；5. carbon source dosage and adding at high cost, sodium acetate dosage is averaged 87.5mg/L, adds cost about 0.6 yuan/ton of water；
Excessively cause anaerobic pond without anaerobic phosphorus release effect 6. chemical cooperated Dephosphorization reagent adds, is usually less than 1mg/L in water inlet phosphate
Under, chemical cooperated Dephosphorization reagent PAC(effective content 8%) dosage is up to 140mg/L.
Summary of the invention
It is a kind of based on anaerobism technical problem to be solved by the present invention lies in view of the above shortcomings of the prior art, providing
Pond is changed to strengthen the sewage treatment optimization operating system of degassing district.The anaerobic pond of former UCT technique is changed to strengthen degassing by the present invention
DO in area's removal reflux nitrification liquid and returned sludge, anoxic pond do not set interior reflux between reinforcing degassing district, lack to increase
The practical hydraulic detention time in oxygen pond, strengthened denitrification, and change and chemical cooperated dephosphorization is determined with biological tank water inlet system total phosphorus concentration
Online phosphoric acid instrument is arranged in the conventional method of added amount of chemical at biological tank water inlet system, true according to the phosphate concn of display
Fixed chemical cooperated Dephosphorization reagent dosage, can significantly reduce Dephosphorization reagent dosage.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: one kind is changed to strengthen degassing based on anaerobic pond
The sewage treatment in area optimizes operating system, which is characterized in that sewage treatment optimization operating system has the feature that
It is a kind of based on anaerobic pond be changed to strengthen degassing district sewage treatment optimize operating system, including strengthen degassing district, anoxic pond,
Aerobic tank, degassing district, exhalant region, secondary settling tank and biological tank water inlet system；Anoxic pond is provided with carbon source dosing system, and exhalant region is set
It is equipped with chemical cooperated dephosphorization medicine system；The outlet for strengthening degassing district and the import of anoxic pond connect, the outlet of anoxic pond
It is connect with the import of aerobic tank, the outlet of aerobic tank and the import of degassing district connect, the outlet of degassing district and the import of exhalant region
Connection；It is provided with nitrification liquid return-flow system between degassing district and reinforcing degassing district, is arranged between secondary settling tank and reinforcing degassing district
There is sludge recirculation system, biological tank water inlet system is provided with online phosphate instrument.
The anoxic pond includes the first anoxic pond, the second anoxic pond and third anoxic pond；Wherein, the import of the first anoxic pond
It is connect with the outlet for strengthening degassing district, the outlet of the first anoxic pond is connected with the import of the second anoxic pond, and the second anoxic pond goes out
Mouth is connect with the import of third anoxic pond, and the outlet of third anoxic pond is connected with the import of aerobic tank.
The aerobic tank adds floating stuffing, including the first aerobic tank and the second aerobic tank；Wherein the first aerobic tank into
Mouth is connect with the outlet of third anoxic pond, and the outlet of the second aerobic tank and the import of degassing district connect.
The sewage treatment optimization operating system presses A/O denitrification process mode operation, strengthens degassing district using carbon in sludge
Source biological oxidation removal dissolved oxygen DO and strengthened denitrification.
The biological tank water inlet system is completely into the first anoxic pond, and carbon source dosing system is arranged in the first anoxic pond
On.
Second anoxic pond is not provided with interior reflux to degassing district is strengthened, to increase the practical hydraulic detention time of anoxic pond
And strengthened denitrification, while reducing return-flow system energy consumption.
The online phosphate instrument Real time displaying phosphate concn, determines chemical cooperated Dephosphorization reagent according to phosphate concn
Dosage, Dephosphorization reagent dosage can be significantly reduced.
The reinforcing degassing district is changed to by anaerobic pond, strengthens the charging of degassing district as reflux nitrification liquid and returned sludge.
The operation method of the sewage treatment optimization operating system that reinforcing degassing district is changed to based on anaerobic pond, including with
Lower step:
A, the returned sludge of sludge recirculation system and the reflux nitrification liquid of nitrification liquid return-flow system enter together strengthens degassing district,
It is stopped 1-1.5 hours under stirring condition, the endogenous organic matter of activated sludge or adsorption organic matter is carried out under microbial action
Biooxidation reactions and remove DO, wherein sludge reflux amount is 0.5-1 times of the discharge of sewage, and nitrification liquid regurgitant volume is sewage stream
1-2 times of amount；
B, strengthen degassing district mixed liquor obtained by step a and pretreated all biological pond water inlet system enters the first anoxic together
Pond stops 1-1.5 hours under the conditions of anoxia stirring, anti-nitration reaction is carried out under microbial action, and add outer carbon source
In the first anoxic pond；
C, mixed liquor obtained by the first anoxic pond enters the second anoxic pond in step b, and it is small that 1-1.5 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction under microbial action；
D, mixed liquor obtained by the second anoxic pond enters third anoxic pond in step c, and it is small that 1-1.5 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction or endogenous denitrification reaction under microbial action；
E, mixed liquor obtained by third anoxic pond enters the first aerobic tank in step d, stops 2-3 hours under aerobic condition, outstanding
Floating microorganism and the lower progress dissolubility refractory organic biooxidation reactions of attached biological film effect and nitration reaction,
In the first aerobic tank add floating stuffing, the DO of filling rate 30-50%, the first aerobic tank are controlled in 2-4mg/L；
F, mixed liquor obtained by the first aerobic tank enters the second aerobic tank in step e, stops 2-3 hours under aerobic condition, outstanding
Floating microorganism and the lower progress nitration reaction of attached biological film effect, wherein the second aerobic tank adds floating stuffing, filling rate 30-
50%, the DO of the second aerobic tank is controlled in 2-4mg/L；
G, mixed liquor obtained by the second aerobic tank enters degassing district in step f, stops 10-15 minutes under agitation, in micro- life
Object effect is lower to be carried out the biooxidation reactions of endogenous organic matter and removes DO；
H, mixed liquor part obtained by degassing district as nitrification liquid flows back into reinforcing degassing district in step g, and rest part entrance goes out
Pool enters back into secondary settling tank and carries out mud-water separation, wherein changing under agitation after being sufficiently mixed with chemical cooperated Dephosphorization reagent
Learn the phosphate concn that collaboration Dephosphorization reagent dosage is shown according to the online phosphate instrument being set at biological tank water inlet system
It is determined.
Further, the mixed genetic-neural network MLSS of microorganism is 4-6g/L in step a, in step b-g
MLSS is 3-4g/L.
Compared with the prior art, the present invention has the following advantages:
The present invention be directed to existing sewage disposal system main operation problem, based on stably reaching standard with it is energy-saving, in conjunction with primary
Object processing system nitrification liquid and the design feature of sludge multiple spot reflux, optimize operation, are mainly manifested in following aspect:
(1) in terms of strengthened denitrification, former UCT technique is pressed into A/O denitrogenation mode operation, and former anaerobic pond is changed to strengthen degassing
Area to reflux nitrification liquid and is returned using the biological oxidation of the organic matter of the endogenous organic matter or adsorption of activated sludge
DO in stream sludge is removed, and is utmostly controlled carbon source caused by biosystem DO and is lost in vain, and then strengthened denitrification is simultaneously
It reduces carbon source and adds cost, carbon source loss maximum can reduce 17mg/LCOD, and strengthened denitrification amount maximum is added up to 4mg/L, carbon source
Cost maximum can reduce by 30%.
(2) anoxic pond is not provided with interior reflux to degassing district is strengthened, to increase the practical hydraulic detention time of anoxic pond, favorably
In making full use of for carbon source, and then strengthened denitrification, the practical hydraulic detention time of anoxic pond can increase about 0.25h, while flowing back and being
System energy consumption can decline 33%.
(3) in terms of chemical cooperated dephosphorization optimization, change and determine that chemical cooperated Dephosphorization reagent adds with total phosphorus concentration of intaking
The conventional method of amount, by the way that online phosphate instrument is arranged at biological tank water inlet system, and it is true with the phosphate concn that it shows
Fixed chemical cooperated Dephosphorization reagent dosage avoids adding excess, Dephosphorization reagent dosage is at least to reduce Dephosphorization reagent dosage
30% can be reduced.
In conclusion specific aim of the present invention and strong operability, can be urban wastewater treatment firm under China's maximum discharge standard
Engineering design and operational management provide guidance, stably reaching standard and energy conservation to low ratio of carbon to ammonium, maximum discharge standard sewage treatment plant
Consumption reduction is of great significance.
Detailed description of the invention
Fig. 1 is changed to strengthen the work of the industrial park sewage treatment optimization operating system of degassing district the present invention is based on anaerobic pond
Skill schematic diagram.
Fig. 2 uses the process schematic representation of the industrial park the Yuan Mou sewage disposal system of UCT technique.
Description of symbols: 1- strengthens degassing district；1 '-anaerobic pond；2- anoxic pond；The first anoxic pond of 2-1-；2-2- second
Anoxic pond；2-3- third anoxic pond；3- aerobic tank；The first aerobic tank of 3-1-；The second aerobic tank of 3-2-；4- degassing district；5- water outlet
Area；6- secondary settling tank；7- biological tank water inlet system；7-1- enters the biological tank water inlet system of anaerobic pond；7-2- enters anoxic pond
Biological tank water inlet system；8- nitrification liquid return-flow system；9- sludge recirculation system；10- carbon source dosing system；11- is chemical cooperated to be removed
Phosphorus medicine system；The online phosphate instrument of 12-；12 '-online total phosphorus instrument；13- secondary effluent；14- excess sludge；15- anoxic pond is extremely
The interior reflux of anaerobic pond.
Specific embodiment
A kind of industrial park sewage treatment for being changed to strengthen degassing district based on anaerobic pond optimizes operating system as shown in Figure 1:,
Including strengthening degassing district 1, anoxic pond 2, aerobic tank 3, degassing district 4, exhalant region 5, secondary settling tank 6 and biological tank water inlet system 7；Anoxic
Pond 2 is provided with carbon source dosing system 10, and exhalant region 5 is provided with chemical cooperated dephosphorization medicine system 11；The reinforcing degassing district 1
Outlet is connect with the import of anoxic pond 2, and the outlet of anoxic pond 2 is connect with the import of aerobic tank 3, the outlet and degassing of aerobic tank 3
The import in area 4 connects, and the outlet of degassing district 4 is connect with the import of exhalant region 5；It is arranged between degassing district 4 and reinforcing degassing district 1
There is nitrification liquid return-flow system 8, is provided with sludge recirculation system 9, biological tank water inlet system 7 between secondary settling tank 6 and reinforcing degassing district 1
It is provided with online phosphate instrument 12.
The anoxic pond 2 includes the first anoxic pond 2-1, the second anoxic pond 2-2 and third anoxic pond 2-3；Wherein, it first lacks
The import of oxygen pond 2-1 is connect with the outlet for strengthening degassing district 1, the outlet of the first anoxic pond 2-1 and the import of the second anoxic pond 2-2
Connection, the outlet of the second anoxic pond 2-2 are connect with the import of third anoxic pond 2-3, the outlet of third anoxic pond 2-3 and aerobic tank
3 import connection.
The aerobic tank 3 adds floating stuffing, including the first aerobic tank 3-1 and the second aerobic tank 3-2；Wherein first is aerobic
The import of pond 3-1 is connect with the outlet of third anoxic pond 2-3, and the outlet of the second aerobic tank 3-2 is connect with the import of degassing district 4.
The sewage treatment optimization operating system presses A/O denitrification process mode operation, strengthens degassing district 1 using carbon in sludge
Source biological oxidation removal dissolved oxygen DO and strengthened denitrification.
The biological tank water inlet system 7 is completely into the first anoxic pond 2-1, and the setting of carbon source dosing system 10 is lacked first
On the 2-1 of oxygen pond.
The second anoxic pond 2-2 is not provided with interior reflux to degassing district 1 is strengthened, to increase the practical hydraulic retention of anoxic pond
Time and strengthened denitrification, while reducing return-flow system energy consumption.
The 12 Real time displaying phosphate concn of online phosphate instrument, determines chemical cooperated dephosphorization medicine according to phosphate concn
The dosage of agent can significantly reduce Dephosphorization reagent dosage.
The reinforcing degassing district 1 is changed to by anaerobic pond, and the charging for strengthening degassing district 1 is reflux nitrification liquid and returned sludge.
The design that the nitrification liquid return-flow system 8 makes full use of original system nitrification liquid multiple spot to flow back, by closing former nitre
Changing liquid return-flow system can be realized, without resetting.
The design that the sludge recirculation system 9 makes full use of original system returned sludge multiple spot to flow back, by closing former return
Stream sludge system can be realized, without resetting.
Embodiment 1
It is a kind of to be changed to strengthen the industrial park sewage treatment optimizing operation method of degassing district based on anaerobic pond, comprising the following steps:
A, the returned sludge of sludge recirculation system and the reflux nitrification liquid of nitrification liquid return-flow system enter together strengthens degassing district,
It is stopped 1.5 hours under stirring condition, the endogenous organic matter of activated sludge or surface is carried out under microorganism (MLSS 5g/L) effect
It adsorbs the biooxidation reactions of organic matter and removes DO, wherein sludge reflux amount is 1 times of the discharge of sewage, and nitrification liquid regurgitant volume is
2 times of the discharge of sewage；
B, strengthen degassing district mixed liquor obtained by step a and pretreated all biological pond water inlet system enters the first anoxic together
Pond 2-1 is stopped 1.5 hours under the conditions of anoxia stirring, and anti-nitration reaction is carried out under microorganism (MLSS 4g/L) effect, and
And outer carbon source is added in the first anoxic pond 2-1；
C, the first anoxic pond 2-1 mixed liquor obtained by step b enters the second anoxic pond 2-2, and it is small that 1.5 are stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction under microorganism (MLSS 4g/L) effect；
D, the second anoxic pond 2-2 mixed liquor obtained by step c enters third anoxic pond 2-3, and it is small that 1.5 are stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction or endogenous denitrification reaction under microorganism (MLSS 4g/L) effect；
E, third anoxic pond 2-3 mixed liquor obtained by step d enters the first aerobic tank 3-1, stops 3 hours under aerobic condition,
Suspension microorganism (MLSS 4g/L) and the lower progress dissolubility refractory organic biological oxidation of attached biological film effect are anti-
Should and nitration reaction, wherein the first aerobic tank 3-1 adds floating stuffing, filling rate 50%, the DO control of the first aerobic tank 3-1
In 4mg/L(winter)；
F, the first aerobic tank 3-1 mixed liquor obtained by step e enters the second aerobic tank 3-2, stops 3 hours under aerobic condition,
Suspension microorganism (MLSS 4g/L) and attached biological film effect is lower carries out nitration reaction, wherein the second aerobic tank 3-2 add it is outstanding
Floating filler, filling rate 50%, while the DO of the second aerobic tank 3-2 was controlled in 4mg/L(winter)；
G, the second aerobic tank 3-2 mixed liquor obtained by step f enters degassing district, stops 15 minutes under agitation, in microorganism
(MLSS 4g/L) effect is lower to be carried out the biooxidation reactions of endogenous organic matter and removes DO；
H, 50% of degassing district mixed liquor obtained by step g flows back into reinforcing degassing district as nitrification liquid, and 50% enters exhalant region,
Under stirring condition, secondary settling tank is entered back into after being sufficiently mixed with chemical cooperated Dephosphorization reagent and carries out mud-water separation, wherein chemical cooperated
Dephosphorization reagent dosage is determined according to the online phosphate instrument being set at biological tank water inlet system.
Embodiment 2
It is a kind of to be changed to strengthen the industrial park sewage treatment optimizing operation method of degassing district based on anaerobic pond, comprising the following steps:
A, the returned sludge of sludge recirculation system and the reflux nitrification liquid of nitrification liquid return-flow system enter together strengthens degassing district,
It is stopped 1 hour under stirring condition, the endogenous organic matter of activated sludge or surface is carried out under microorganism (MLSS 4.5g/L) effect
It adsorbs the biooxidation reactions of organic matter and removes DO, wherein sludge reflux amount is 1 times of the discharge of sewage, and nitrification liquid regurgitant volume is
1 times of the discharge of sewage；
B, strengthen degassing district mixed liquor obtained by step a and pretreated all biological pond water inlet system enters the first anoxic together
Pond 2-1 is stopped 1 hour under the conditions of anoxia stirring, and anti-nitration reaction is carried out under microorganism (MLSS 3g/L) effect, and
Outer carbon source is added in the first anoxic pond 2-1；
C, the first anoxic pond 2-1 mixed liquor obtained by step b enters the second anoxic pond 2-2, and it is small that 1 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction under microorganism (MLSS 3g/L) effect；
D, the second anoxic pond 2-2 mixed liquor obtained by step c enters third anoxic pond 2-3, and it is small that 1 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction or endogenous denitrification reaction under microorganism (MLSS 3g/L) effect；
E, third anoxic pond 2-3 mixed liquor obtained by step d enters the first aerobic tank 3-1, stops 2 hours under aerobic condition,
Suspension microorganism (MLSS 3g/L) and the lower progress dissolubility refractory organic biological oxidation of attached biological film effect are anti-
Should and nitration reaction, wherein the first aerobic tank 3-1 adds floating stuffing, filling rate 30%, the DO control of the first aerobic tank 3-1
In 2mg/L(non-winter)；
F, the first aerobic tank 3-1 mixed liquor obtained by step e enters the second aerobic tank 3-2, stops 2 hours under aerobic condition,
Suspension microorganism (MLSS 3g/L) and attached biological film effect is lower carries out nitration reaction, wherein the second aerobic tank 3-2 add it is outstanding
The DO of floating filler, filling rate 30%, the second aerobic tank 3-2 was controlled in 2mg/L(non-winter)；
G, the second aerobic tank 3-2 mixed liquor obtained by step f enters degassing district, stops 10 minutes under agitation, in microorganism
(MLSS 3g/L) effect is lower to be carried out the biooxidation reactions of endogenous organic matter and removes DO；
H, 33% of degassing district mixed liquor obtained by step g flows back into reinforcing degassing district as nitrification liquid, and 67% enters exhalant region,
Under stirring condition, secondary settling tank is entered back into after being sufficiently mixed with chemical cooperated Dephosphorization reagent and carries out mud-water separation, wherein chemical cooperated
Dephosphorization reagent dosage is determined according to the online phosphate instrument being set at biological tank water inlet system.
Embodiment 3
It is a kind of to be changed to strengthen the industrial park sewage treatment optimizing operation method of degassing district based on anaerobic pond, comprising the following steps:
A, the returned sludge of sludge recirculation system and the reflux nitrification liquid of nitrification liquid return-flow system enter together strengthens degassing district,
It is stopped 1 hour under stirring condition, the endogenous organic matter of activated sludge is carried out under microorganism (MLSS 6g/L) effect or surface is inhaled
The biooxidation reactions of attached organic matter and remove DO, wherein sludge reflux amount is 0.5 times of the discharge of sewage, and nitrification liquid regurgitant volume is
2 times of the discharge of sewage；
B, strengthen degassing district mixed liquor obtained by step a and pretreated all biological pond water inlet system enters the first anoxic together
Pond 2-1 is stopped 1 hour under the conditions of anoxia stirring, and anti-nitration reaction is carried out under microorganism (MLSS 4g/L) effect, and
Outer carbon source is added in the first anoxic pond 2-1；
C, the first anoxic pond 2-1 mixed liquor obtained by step b enters the second anoxic pond 2-2, and it is small that 1 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction under microorganism (MLSS 4g/L) effect；
D, the second anoxic pond 2-2 mixed liquor obtained by step c enters third anoxic pond 2-3, and it is small that 1 is stopped under the conditions of anoxia stirring
When, continue anti-nitration reaction or endogenous denitrification reaction under microorganism (MLSS 4g/L) effect；
E, third anoxic pond 2-3 mixed liquor obtained by step d enters the first aerobic tank 3-1, stops 2 hours under aerobic condition,
Suspension microorganism (MLSS 4g/L) and the lower progress dissolubility refractory organic biological oxidation of attached biological film effect are anti-
Should and nitration reaction, wherein the first aerobic tank 3-1 adds floating stuffing, filling rate 40%, the DO control of the first aerobic tank 3-1
In 4mg/L(winter)；
F, the first aerobic tank 3-1 mixed liquor obtained by step e enters the second aerobic tank 3-2, stops 2 hours under aerobic condition,
Suspension microorganism (MLSS 4g/L) and attached biological film effect is lower carries out nitration reaction, wherein the second aerobic tank 3-2 add it is outstanding
The DO of floating filler, filling rate 40%, the second aerobic tank 3-2 was controlled in 4mg/L(winter)；
G, the second aerobic tank 3-2 mixed liquor obtained by step f enters degassing district, stops 10 minutes under agitation, in microorganism
(MLSS 4g/L) effect is lower to be carried out the biooxidation reactions of endogenous organic matter and removes DO；
H, 57% of degassing district mixed liquor obtained by step g flows back into reinforcing degassing district as nitrification liquid, and 43% enters exhalant region,
Under stirring condition, secondary settling tank is entered back into after being sufficiently mixed with chemical cooperated Dephosphorization reagent and carries out mud-water separation, wherein chemical cooperated
Dephosphorization reagent dosage is determined according to the online phosphate instrument being set at biological tank water inlet system.
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. a kind of sewage treatment for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, including strengthens degassing district (1), lacks
Oxygen pond (2), aerobic tank (3), degassing district (4), exhalant region (5), secondary settling tank (6) and biological tank water inlet system (7)；Anoxic pond (2)
It is provided with carbon source dosing system (10), exhalant region (5) is provided with chemical cooperated dephosphorization medicine system (11)；It is characterized in that, institute
The outlet for stating reinforcing degassing district (1) is connect with the import of anoxic pond (2), and the outlet of anoxic pond (2) and the import of aerobic tank (3) connect
It connects, the outlet of aerobic tank (3) is connect with the import of degassing district (4), and the outlet of degassing district (4) is connect with the import of exhalant region (5)；
It is provided with nitrification liquid return-flow system (8) between degassing district (4) and reinforcing degassing district (1), secondary settling tank (6) and reinforcing degassing district
(1) it is provided between sludge recirculation system (9), biological tank water inlet system (7) is provided with online phosphate instrument (12).
2. the sewage treatment according to claim 1 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that the anoxic pond (2) includes the first anoxic pond (2-1), the second anoxic pond (2-2) and third anoxic pond (2-3)；Its
In, the import of the first anoxic pond (2-1) is connect with the outlet for strengthening degassing district (1), the outlet and second of the first anoxic pond (2-1)
The import of anoxic pond (2-2) connects, and the outlet of the second anoxic pond (2-2) is connect with the import of third anoxic pond (2-3), and third lacks
The outlet in oxygen pond (2-3) is connected with the import of aerobic tank (3).
3. the sewage treatment according to claim 2 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that the aerobic tank (3) adds floating stuffing, including the first aerobic tank (3-1) and the second aerobic tank (3-2)；Wherein
The import of one aerobic tank (3-1) is connect with the outlet of third anoxic pond (2-3), the outlet and degassing district of the second aerobic tank (3-2)
(4) import connection.
4. the sewage treatment according to claim 1 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that the sewage treatment optimization operating system presses A/O denitrification process mode operation, strengthens degassing district (1) using in sludge
Carbon source biological oxidation removal dissolved oxygen DO and strengthened denitrification.
5. the sewage treatment according to claim 2 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that the biological tank water inlet system (7) is completely into the first anoxic pond (2-1), and carbon source dosing system (10) setting exists
In first anoxic pond (2-1).
6. the sewage treatment according to claim 2 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that second anoxic pond (2-2) is not provided with interior reflux to degassing district (1) is strengthened, to increase the practical waterpower of anoxic pond
Residence time and strengthened denitrification, while reducing return-flow system energy consumption.
7. the sewage treatment according to claim 1 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that online phosphate instrument (12) the Real time displaying phosphate concn determines chemical cooperated dephosphorization according to phosphate concn
The dosage of medicament can significantly reduce Dephosphorization reagent dosage.
8. the sewage treatment according to claim 1 for being changed to strengthen degassing district based on anaerobic pond optimizes operating system, special
Sign is that the reinforcing degassing district (1) is changed to by anaerobic pond, and the charging for strengthening degassing district (1) is that reflux nitrification liquid and reflux are dirty
Mud.
9. described in claim 1 be changed to strengthen the operation side of the sewage treatment optimization operating system of degassing district based on anaerobic pond
Method, which comprises the following steps:
A, the returned sludge of sludge recirculation system (9) and the reflux nitrification liquid of nitrification liquid return-flow system (8), which enter to strengthen together, takes off
Gas area (1) stops 1-1.5 hours under agitation, and the endogenous organic matter of activated sludge or surface are carried out under microbial action
It adsorbs the biooxidation reactions of organic matter and removes DO, wherein sludge reflux amount is 0.5-1 times of the discharge of sewage, nitrification liquid reflux
Amount is 1-2 times of the discharge of sewage；
B, strengthen degassing district mixed liquor obtained by step a and pretreated all biological pond water inlet system enters the first anoxic together
Pond (2-1) stops 1-1.5 hours under the conditions of anoxia stirring, anti-nitration reaction is carried out under microbial action, and adds outer
Carbon source is in the first anoxic pond (2-1)；
C, mixed liquor obtained by the first anoxic pond (2-1) enters the second anoxic pond (2-2) in step b, stops under the conditions of anoxia stirring
It stays 1-1.5 hours, continues anti-nitration reaction under microbial action；
D, mixed liquor obtained by the second anoxic pond (2-2) enters third anoxic pond (2-3) in step c, stops under the conditions of anoxia stirring
It stays 1-1.5 hours, continues anti-nitration reaction or endogenous denitrification reaction under microbial action；
E, mixed liquor obtained by third anoxic pond (2-3) enters the first aerobic tank (3-1) in step d, stops 2-3 under aerobic condition
Hour, dissolubility refractory organic biooxidation reactions and nitre are carried out under suspension microorganism and attached biological film effect
Change reaction, wherein the first aerobic tank (3-1) adds floating stuffing, filling rate 30-50%, the DO control of the first aerobic tank (3-1)
In 2-4mg/L；
F, mixed liquor obtained by the first aerobic tank (3-1) enters the second aerobic tank (3-2) in step e, stops 2-3 under aerobic condition
Hour, nitration reaction is carried out under suspension microorganism and attached biological film effect, wherein the second aerobic tank (3-2) adds suspension and fills out
The DO of material, filling rate 30-50%, the second aerobic tank (3-2) is controlled in 2-4mg/L；
G, mixed liquor obtained by the second aerobic tank (3-2) enters degassing district (4) in step f, stops 10-15 points under agitation
Clock carries out the biooxidation reactions of endogenous organic matter under microbial action and removes DO；
H, mixed liquor part obtained by degassing district (4) as nitrification liquid flows back into reinforcing degassing district (1), rest part in step g
Into exhalant region (5), under agitation, secondary settling tank (6) are entered back into after being sufficiently mixed with chemical cooperated Dephosphorization reagent and carry out mud
Water separation, wherein chemical cooperated Dephosphorization reagent dosage is according to the online phosphate instrument (12) being set at biological tank water inlet system
The phosphate concn of display is determined.
10. a kind of sewage treatment for being changed to strengthen degassing district based on anaerobic pond according to claim 9 optimizes operating system
Operation method, which is characterized in that the mixed genetic-neural network MLSS of microorganism is 4-6g/L in step a, in step b-g
MLSS be 3-4g/L.
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| CN114804326A (en) * | 2022-05-10 | 2022-07-29 | 中电建华东勘测设计研究院(郑州)有限公司 | Efficient nitrogen and phosphorus removal control method and system for shortcut nitrification and denitrification reaction tank |
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