CN109607773A - A kind of deep denitrogenation process based on SBR - Google Patents
A kind of deep denitrogenation process based on SBR Download PDFInfo
- Publication number
- CN109607773A CN109607773A CN201910027513.4A CN201910027513A CN109607773A CN 109607773 A CN109607773 A CN 109607773A CN 201910027513 A CN201910027513 A CN 201910027513A CN 109607773 A CN109607773 A CN 109607773A
- Authority
- CN
- China
- Prior art keywords
- sbr
- sewage
- hypoxemia
- deep denitrogenation
- anaerobism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (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 invention discloses a kind of deep denitrogenation process based on SBR, belong to field of environment engineering technology.Using SBR equipment, makes the sewage in sbr reactor device according to anaerobism → hypoxemia → anoxic mode operation, provide advantage for nitrite denitrification phosphorus-collecting for anaerobic phase microbial conservation PHA and in the hypoxemia phase.In usual sanitary sewage carbon-nitrogen ratio, in the form of PHA existing for internal carbon source in aerobic latter stage still have residue, carbon source can be provided for rear anaerobic phase denitrification denitrogenation.By accurately controlling the accurate control of time hypoxemia phase and the realization of rear anaerobic phase time to ammoxidation process and denitrification process, to realize the advanced nitrogen of sewage.After device runs some cycles, phosphorus is released to enhance polyP bacteria activity by extending the anaerobic phase time or adding outer carbon source reinforcing to reactor at anaerobism initial stage, improves phosphor-removing effect.
Description
Technical field
The invention belongs to field of environment engineering technology, and in particular to a kind of deep denitrogenation process based on SBR.
Background technique
With socio-economic development, people are continuously increased the demand of water resource, currently, in small flow decentralized type sewage
It handles in engineering, such as rural area village group sewage treatment project and urban cells sewage treatment, there are many all use SBR technique (sequence
Batch activated sludge process, also known as intermittent activated sludge process), but there are equipment effluent quality, especially total nitrogen, total phosphorus to be difficult to completely
The problem of sufficient discharge standard requires.
Summary of the invention
To solve the above-mentioned problems, the invention discloses a kind of deep denitrogenation process based on SBR, from operational mode, fortune
Row Time Control Strategy etc. proposes a series of measures for improving SBR effluent quality, so that small flow sewage treatment is integrated
Change equipment effluent quality and reaches related request.
The present invention is to be achieved through the following technical solutions:
A kind of deep denitrogenation process based on SBR, the entire flow in a period the following steps are included:
Step 1: sewage to be processed being added to the sbr reactor device for being inoculated with activated sludge, is stopped after reaching predetermined filled water amount
Only；
Step 2: turn on agitator, be uniformly mixed activated sludge with sewage and make mixed liquor in sbr reactor device according to
Anaerobism → hypoxemia → anoxic time sequence model operation；
Step 3: stopping stirring, the mixed liquor handled through step 2 is stood；
Step 4: sbr reactor device will be discharged through step 3 treated supernatant, and complete the advanced nitrogen of sewage；
When device run 12~18 periods when, by the anaerobism mode operation time in next period be set as 3~5h or
Anaerobism initial stage adds outer carbon source to reactor.
Preferably, adding outer carbon source is sodium acetate, and the dosage of sodium acetate is according to making to be generated in reactor by sodium acetate
COD concentration is 100~200mg/L calculating.
Preferably, in step 2, the runing time of anaerobism mode is 1~2h.
Preferably, in step 2, under hypoxemia mode, make dissolved oxygen concentration≤0.5mg/L by limiting aeration quantity.
Preferably, in step 2, under hypoxemia mode, as dissolved oxygen concentration >=1.0mg/L, stop aeration, be transferred to anoxic
Mode.
Preferably, under anoxic mode, stop stirring as pH value rate of rise < 0.
Preferably, the time that sewage is stood is 0.5~1h.
Preferably, the water inlet index of sewage are as follows: COD COD=300~500mg/L, biochemical oxygen demand
BOD5=180~300mg/L, total nitrogen TN=60~80mg/L, ammonia nitrogen=40~60mg/L, total phosphorus TP=5~10mg/L.
Preferably, the ammonia nitrogen concentration for the water that step 4 is discharged can reach < 1mg/L, and total nitrogen concentration can reach < 15mg/
L, total phosphorus concentration can reach < 0.5mg/L, and COD concentration can reach < 50mg/L.
Compared with prior art, the invention has the following beneficial technical effects:
Deep denitrogenation process disclosed by the invention based on SBR, using SBR technique, with anaerobism/hypoxemia/anoxic mode fortune
Row provides favorably for anaerobic phase microbial conservation poly (hydroxyalkanoate) PHA and in the hypoxemia phase for nitrite denitrification phosphorus-collecting
Condition.In usual sanitary sewage carbon-nitrogen ratio, in the form of PHA existing for internal carbon source in hypoxemia latter stage still have residue, can
Carbon source is provided for rear anaerobic phase denitrification denitrogenation, improves nitrogen removal rate.This phenomenon has passed through in measurement SBR a cycle
Liquid phase N2The test of the change curve of O concentration is confirmed: in the hypoxia under anaerobism/hypoxemia/anoxic operational mode,
N2O is mainly acted on by the heterotrophic denitrification based on carbon source PHA intracellular and being generated, (the carbon nitrogen when processed sewage carbon-nitrogen ratio is lower
Than=1~2), liquid phase N2Initial stage and mid-term of the peak value of O concentration curve close to the hypoxemia phase, the and (carbon when carbon-nitrogen ratio is higher
Nitrogen ratio=5~6), liquid phase N2Latter stage of the peak value of O concentration curve close to the hypoxemia phase.(carbon nitrogen when it illustrates that carbon-nitrogen ratio is higher
Than=5~6), internal carbon source PHA still has residue in hypoxemia latter stage.When device runs 12~18 periods, by detesting for next period
The oxygen mode operation time is set as 3~5h or adds outer carbon source sodium acetate 100-200mg/L, by periodically extending the anaerobic phase time
Or add outer carbon source reinforcing and release phosphorus to enhance polyP bacteria activity, improve phosphor-removing effect.The experimental results showed that except the sheet for releasing phosphorus is strengthened
Period water outlet total phosphorus concentration is slightly higher outer, subsequent 12~18 periods (each cycle 8 hours, daily 3 periods) sbr reactor device water outlet
Total phosphorus concentration is below 0.3mg/L.
Further, under hypoxemia mode, make dissolved oxygen concentration≤0.5mg/L by limiting aeration quantity, maintain lower
Dissolved oxygen concentration has stronger synchronous short-cut nitrification and denitrification ability while saving the energy, to realize synchronous short distance nitre
Change denitrification denitrogenation and provides advantage.By using dissolved oxygen instrument automatic continuous monitoring hypoxemia phase dissolved oxygen concentration, when it
When >=1.0mg/L, stop aeration, ensured the complete oxidation of ammonia nitrogen so that ammonia nitrogen removal frank is high, and limit nitrite nitrogen to
The conversion of nitrate nitrogen.Stop by using pH instrument automatic continuous monitoring anaerobic phase mixed liquor pH value as pH value rate of rise < 0
It only stirs, has ensured denitrification effect, so that nitrogen removal rate is high.In addition, hypoxemia phase lower dissolution oxygen environment makes anaerobism
The internal carbon source PHA of phase microbial conservation is mainly used for the denitrification using nitrite as electron acceptor, rather than is electricity with oxygen
Sub- receptor carries out so that the poly- phosphorus of hypoxemia phase acts on based on nitrite denitrification phosphorus-collecting so that poly- phosphorus is synchronous with denitrogenation.?
Under hypoxemia mode, extend with reactor runing time, hypoxia nitrogen removal rate increases.16rRNA high throughput analysis shows
There are anaerobic ammonia oxidizing bacterias in reactor activity mud mixed liquid.It shows the hypoxemia for existing concurrently with ammonia nitrogen and nitrite
Phase, there are the denitrifications of Anammox, improve nitrogen removal rate.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
Process flow of the invention is described in further detail below with reference to Fig. 1, described is explanation of the invention
Rather than it limits.
Such as Fig. 1, the deep denitrogenation process of the invention based on SBR, the entire flow in a period the following steps are included:
Step 1: sewage to be processed is pumped into sbr reactor device, general sanitary sewage water quality indicator are as follows: COD
COD=300~500mg/L, biochemical oxygen demand BOD5=180~300mg/L, total nitrogen TN=60~80mg/L, ammonia nitrogen=
40~60mg/L, total phosphorus TP=5~10mg/L.According to place capacity, stop after reaching predetermined filled water amount；
Step 2: turn on agitator makes the sewage in sbr reactor device according to anaerobism → hypoxemia → anoxic mode operation；Detest
Oxygen mode generally sets 1~2h, subsequently into hypoxemia mode, is aerated, at the same limit aeration quantity make dissolved oxygen concentration≤
0.5mg/L.It monitors that dissolved oxygen concentration increases, as numerical value >=1.0mg/L, stops aeration, be transferred to anoxic mode.
Step 3: stopping stirring when monitoring anaerobic phase pH value rate of rise < 0, sewage is stood, set time of repose
For 0.5~1h；
Step 4: sbr reactor device will be discharged through step 3 treated product, and complete the advanced nitrogen of sewage, the ammonia of water outlet
Nitrogen concentration can reach < 1mg/L, and total nitrogen concentration can reach < 15mg/L, and total phosphorus concentration can reach < 0.5mg/L, COD
Concentration can reach < 50mg/L.
When device runs 12~18 periods, the anaerobism mode operation time in next period is extended for 3~5h or is added
Outer carbon source sodium acetate, the dosage of sodium acetate are 100- according to the concentration for adding the COD generated in post-reactor by sodium acetate
The principle of 200mg/L is calculated, and reinforcing releases phosphorus to enhance polyP bacteria activity, improves phosphor-removing effect.
By placing dissolved oxygen probe (sensor), pH probe (sensor), blender, liquid level sensor in reactor
Deng automatically controlling hypoxemia phase runing time using PLC and rear lack according to the Dissolved Oxygen concentration Control value and pH value controlling value of setting
Oxygen phase runing time, the detection signal difference of each sensor is sampled, converts and is connected after handling with controller.According to setting in advance
Fixed system runs control strategy, implements On-line Control by operational process of the relay in process controller to system.?
While energy saving (aeration quantity), the accurate control to ammoxidation process and denitrification process is realized, realize short distance nitration, and
Improve the denitrification effect to sewage.
By laboratory proofing, sewage disposal device effluent quality COD, ammonia nitrogen, total nitrogen, total phosphorus reach " at town sewage
Manage factory's pollutant emission standard " level-one A standard in GB18918-2002 standard.
Claims (9)
1. a kind of deep denitrogenation process based on SBR, which is characterized in that the entire flow in a period the following steps are included:
Step 1: sewage to be processed being added to the sbr reactor device for being inoculated with activated sludge, is stopped after reaching predetermined filled water amount；
Step 2: turn on agitator is uniformly mixed activated sludge with sewage and makes the mixed liquor in sbr reactor device according to anaerobism
The operation of → hypoxemia → anoxic time sequence model；
Step 3: stopping stirring, the mixed liquor handled through step 2 is stood；
Step 4: sbr reactor device will be discharged through step 3 treated supernatant, and complete the advanced nitrogen of sewage；
When sbr reactor device runs 12~18 periods, the anaerobism mode operation time in a sbr reactor device lower period is set as
3~5h adds outer carbon source to reactor at anaerobism initial stage.
2. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that the outer carbon source added is sodium acetate,
The amount added makes the 100~200mg/L of COD concentration generated in reactor by sodium acetate.
3. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that in step 2, the fortune of anaerobism mode
The row time is 1~2h.
4. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that in step 2, under hypoxemia mode,
Make dissolved oxygen concentration≤0.5mg/L by limiting aeration quantity.
5. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that in step 2, under hypoxemia mode,
As dissolved oxygen concentration >=1.0mg/L, stops aeration, be transferred to anoxic mode.
6. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that under anoxic mode, when pH value rises
Stop stirring when slope < 0.
7. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that sewage stand time be 0.5~
1h。
8. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that the water inlet index of sewage are as follows: chemistry
Oxygen demand COD=300~500mg/L, biochemical oxygen demand BOD5=180~300mg/L, total nitrogen TN=60~80mg/L,
Ammonia nitrogen=40~60mg/L, total phosphorus TP=5~10mg/L.
9. as described in claim 1 based on the deep denitrogenation process of SBR, which is characterized in that the ammonia nitrogen for the water that step 4 is discharged is dense
Spend < 1mg/L, total nitrogen concentration < 15mg/L, total phosphorus concentration < 0.5mg/L, COD concentration < 50mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027513.4A CN109607773A (en) | 2019-01-11 | 2019-01-11 | A kind of deep denitrogenation process based on SBR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027513.4A CN109607773A (en) | 2019-01-11 | 2019-01-11 | A kind of deep denitrogenation process based on SBR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109607773A true CN109607773A (en) | 2019-04-12 |
Family
ID=66018483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910027513.4A Pending CN109607773A (en) | 2019-01-11 | 2019-01-11 | A kind of deep denitrogenation process based on SBR |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109607773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104981A (en) * | 2021-05-06 | 2021-07-13 | 长安大学 | Method for improving nitrogen and phosphorus removal efficiency of sewage by nitrite-enhanced denitrification phosphorus accumulation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944584A (en) * | 2015-07-12 | 2015-09-30 | 北京工业大学 | Process control method for achieving interior source storage and interior source denitrification nitrogen and phosphorus removal strengthening of SNDPR system through delaying anaerobism |
| CN105776538A (en) * | 2016-03-26 | 2016-07-20 | 北京工业大学 | Device and method for treating low-carbon domestic sewage through single-stage SBBR short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation |
| CN106348439A (en) * | 2016-09-10 | 2017-01-25 | 北京工业大学 | Wastewater advanced denitrification apparatus and method employing single-stage SBBR (sequencing batch biofilm reactor) short-cut nitrification anammox coupled endogenous denitrification |
| CN107162196A (en) * | 2017-07-10 | 2017-09-15 | 北京工业大学 | Short distance nitration Anammox coupling denitrification handles the method and apparatus of city domestic sewage |
-
2019
- 2019-01-11 CN CN201910027513.4A patent/CN109607773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944584A (en) * | 2015-07-12 | 2015-09-30 | 北京工业大学 | Process control method for achieving interior source storage and interior source denitrification nitrogen and phosphorus removal strengthening of SNDPR system through delaying anaerobism |
| CN105776538A (en) * | 2016-03-26 | 2016-07-20 | 北京工业大学 | Device and method for treating low-carbon domestic sewage through single-stage SBBR short-range synchronous nitration, denitration and dephosphorization coupled anaerobic ammonia oxidation |
| CN106348439A (en) * | 2016-09-10 | 2017-01-25 | 北京工业大学 | Wastewater advanced denitrification apparatus and method employing single-stage SBBR (sequencing batch biofilm reactor) short-cut nitrification anammox coupled endogenous denitrification |
| CN107162196A (en) * | 2017-07-10 | 2017-09-15 | 北京工业大学 | Short distance nitration Anammox coupling denitrification handles the method and apparatus of city domestic sewage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113104981A (en) * | 2021-05-06 | 2021-07-13 | 长安大学 | Method for improving nitrogen and phosphorus removal efficiency of sewage by nitrite-enhanced denitrification phosphorus accumulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106673205B (en) | The quick start method of integral type autotrophic denitrification system | |
| CN108585202B (en) | Process for realizing partial short-cut nitrification, sludge fermentation coupling denitrification and anaerobic ammonia oxidation treatment of domestic sewage in sequencing batch reactor | |
| Scaglione et al. | Nitrification denitrification via nitrite in a pilot-scale SBR treating the liquid fraction of co-digested piggery/poultry manure and agro-wastes | |
| Hongwei et al. | Nitrite accumulation during the denitrification process in SBR for the treatment of pre-treated landfill leachate | |
| CN100364902C (en) | Control apparatus and method for pulse water-feeding SBR deep denitrogenation process and course | |
| CN105923770A (en) | Method and device for sewage denitrification by coupling of shortcut nitrification, anaerobic ammonia oxidation and shortcut denitrification | |
| CN104291443B (en) | The apparatus and method of half nitrated/part denitrification/Anammox process low ratio of carbon to ammonium municipal effluent | |
| CN106115915A (en) | Low C/N is than the apparatus and method of city domestic sewage short-cut denitrification/short distance nitration Anammox biomembrane process | |
| CN102583745B (en) | Improved in-situ excess sludge decrement control method through cyclic activated sludge technology | |
| CN102079578A (en) | Method for quickly enriching phosphorus accumulating organisms (PAOs) in activated sludge | |
| CN113233592B (en) | Treatment device and method for realizing synchronous deep denitrification and decarbonization of advanced landfill leachate and domestic sewage | |
| Dionisi et al. | Maximisation of the organic load rate and minimisation of oxygen consumption in aerobic biological wastewater treatment processes by manipulation of the hydraulic and solids residence time | |
| CN103382051B (en) | Apparatus and method used for enhancing low-temperature bio-nitrification effects | |
| CN113428979A (en) | Device and method for synchronously treating nitrate wastewater and domestic sewage by two-stage reinforced PDAMOX process based on biological membrane | |
| CN101602545B (en) | Method for obtaining stable nitrite accumulation by sewage denitrification | |
| CN109607774B (en) | SBBR-based deep nitrogen and phosphorus removal process | |
| CN112093890B (en) | Method for treating sewage by short-cut nitrification | |
| CN109607773A (en) | A kind of deep denitrogenation process based on SBR | |
| CN109231478A (en) | A kind of starting method of full biological phosphate-eliminating AOO technique | |
| CN208700677U (en) | A kind of room temperature low ratio of carbon to ammonium city domestic sewage short distance nitration device for rapidly starting | |
| Guo et al. | Efficient and integrated start-up strategy for partial nitrification to nitrite treating low C/N domestic wastewater | |
| CN201942563U (en) | Phosphate accumulating organisms (PAO) enrichment equipment | |
| CN101693583A (en) | Biochemical comprehensive treatment method for 1, 3-propylene glycol fermentation organism waste water | |
| CN107010723A (en) | Two-stage anaerobic ammoxidation is to landfill leachate depth denitrification control method and device | |
| CN103011409B (en) | Method for realizing stable operation of nitrosification of domestic sewage in sequencing batch reactor (SBR) by using intermittent aeration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190412 |