CN115448443B - Process for treating enriched polysaccharide bacteria by side of continuous flow AOA to strengthen deep denitrification of low carbon nitrogen ratio domestic sewage - Google Patents
Process for treating enriched polysaccharide bacteria by side of continuous flow AOA to strengthen deep denitrification of low carbon nitrogen ratio domestic sewage Download PDFInfo
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Abstract
A process for treating enriched polysaccharide bacteria by the side of continuous flow AOA to strengthen deep denitrification of domestic sewage with low carbon nitrogen ratio belongs to the field of sewage biological treatment. The device comprises an urban domestic sewage raw water tank, a continuous flow AOA reactor, a sedimentation tank, a side treatment SBR reactor, a water outlet water tank and a water distribution water tank. The urban domestic sewage enters a continuous flow AOA reactor, then anaerobic phosphorus release is carried out, mixed liquid at the anaerobic end part enters a side treatment SBR reactor, first precipitation is carried out, phosphorus-rich supernatant is discharged, then phosphorus-free liquid is pumped in and aerated at the same time, so that phosphorus-accumulating bacteria cannot generate aerobic phosphorus absorption action, growth and reproduction of the phosphorus-accumulating bacteria are inhibited, then anaerobic stirring is carried out again, phosphorus release and precipitation of the phosphorus-accumulating bacteria are carried out, the supernatant is discharged, and then the next cycle is started, so that phosphorus-accumulating bacteria are inhibited after a plurality of cycles are circulated, and glycan bacteria are enriched. Pumping the domesticated sludge into the continuous flow AOA reactor again, and enriching the polysaccharide bacteria in the continuous flow AOA reactor after multiple domestications, thereby achieving the purpose of deep denitrification.
Description
Technical Field
The invention relates to a continuous flow AOA side treatment enrichment polysaccharide bacteria reinforced low carbon nitrogen ratio domestic sewage deep denitrification process, belongs to the field of sewage biological treatment, and is suitable for deep denitrification of urban domestic sewage.
Background
In recent years, along with the improvement of the living standard of people, more and more nitrogen and phosphorus-containing wastewater is discharged into the water body, and the eutrophication of the water body is aggravated. The eutrophication of water body can influence photosynthesis of plants in water, so that the supersaturation state of dissolved oxygen is caused, a great deal of fish is dead, and meanwhile, as the eutrophication water contains nitrate and nitrite, people and livestock drink the water with the content exceeding a certain standard for a long time, the water can be poisoned and pathogenic. Therefore, denitrification and dephosphorization are also the primary tasks of sewage treatment plants. However, the conventional denitrification and dephosphorization process is difficult to meet the denitrification and dephosphorization requirements due to low C/N of the urban domestic sewage, so that the conventional process must be modified.
In the traditional continuous flow AOA process, phosphorus accumulating bacteria and polysaccharide bacteria store carbon sources in raw water as internal carbon sources in an anaerobic section, and meanwhile, the phosphorus accumulating bacteria anaerobically release phosphorus; aerobic phosphorus absorption is carried out by the phosphorus accumulating bacteria in the aerobic section, and simultaneously ammonia nitrogen in raw water is converted into nitrate nitrogen by the nitrifying bacteria; and (3) carrying out endogenous denitrification on the anoxic segment polysaccharide bacteria by utilizing a stored internal carbon source to convert the nitrate nitrogen in the upper stage into nitrogen, thereby completing the removal of nitrogen. Because of insufficient carbon source of raw water, the competition of the polysaccharide bacteria and the phosphorus accumulating bacteria on the carbon source in the anaerobic section is liable to make the polysaccharide bacteria difficult to be enriched in a large quantity, so that the subsequent endogenous denitrification process is influenced, and finally the process cannot be used for deep denitrification, so that the polysaccharide bacteria must be enriched for the deep denitrification.
At present, a common method for inhibiting the phosphorus accumulating bacteria from enriching the polysaccharide bacteria in the SBR system is to remove phosphorus accumulating supernatant liquid at the end of anaerobism and pump phosphorus-free liquid, and the steps are repeated. However, in the continuous flow AOA reactor, the direct acclimation of sludge in the main reactor not only can cause the stop of the reactor, but also can seriously influence the microbial flora structure of the main reactor, so that the water outlet effect of the reactor is difficult to control. The sludge-water mixture of a small part of the main reactor is introduced into other reactors for treatment and then pumped into the main reactor again, so that the influence on the main reactor is greatly reduced, and the polysaccharide bacteria of the main reactor are enriched after long-term side treatment, so that the deep denitrification of the traditional continuous flow AOA process is realized.
According to the invention, a small part of sludge-water mixture at the tail end of an anaerobic section of the continuous flow reactor is introduced into a side treatment SBR reactor, phosphorus-rich supernatant is discharged after precipitation in the side treatment reactor, and phosphorus-free liquid is pumped in, so that an aerobic phosphorus absorption process cannot occur in an aeration stage, the growth of phosphorus-accumulating bacteria is inhibited, and the process is circulated for a plurality of cycles. And pumping the domesticated sludge into a main reactor, and circularly reciprocating, so that the polysaccharide bacteria in the main reactor are enriched, and the deep denitrification of the continuous flow AOA process is realized.
Disclosure of Invention
The invention aims to provide a process for deeply denitrifying domestic sewage with a low carbon nitrogen ratio by enriching glycan bacteria by side treatment of continuous flow AOA, in particular to a process for anaerobic phosphorus release of urban domestic sewage after the urban domestic sewage enters a continuous flow AOA reactor, wherein a small part of sludge-water mixture at the tail end of the anaerobic process flows into a side treatment SBR reactor through a sludge discharge valve, and most of sludge-water mixture continuously reacts in the continuous flow AOA reactor. The side treatment SBR reactor is internally provided with precipitation to discharge supernatant liquid rich in phosphorus, then the liquid which does not contain phosphorus is pumped in and aerated at the same time, so that phosphorus bacteria cannot be subjected to aerobic phosphorus absorption, thereby inhibiting growth and propagation of the phosphorus bacteria, then anaerobic stirring is carried out again to enable the phosphorus bacteria to release phosphorus, the precipitation is used for discharging supernatant liquid to start the next period, thus the phosphorus bacteria are inhibited after a plurality of periods of circulation, the polysaccharide bacteria are enriched, the domesticated sludge is pumped into the continuous flow AOA reactor again, and after a plurality of domestications, the polysaccharide bacteria in the continuous flow AOA reactor are enriched, thereby achieving the purpose of deep denitrification.
The invention aims at realizing the following technical scheme:
the device used in the process comprises an urban domestic sewage raw water tank (1), a continuous flow AOA reactor (3), a sedimentation tank (4), a side treatment SBR reactor (5), a water outlet tank (6) and a water distribution tank (7) which are sequentially connected, wherein the aeration and stirring processes are completed by an online monitoring system and a feedback control system; the continuous flow AOA reactor (3) comprises the following anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3), wherein the volume of the anaerobic section (3-1): volume of the aerobic section (3-2): the volume of the anoxic section (3-3) is 1:1:2;
the urban domestic sewage raw water tank (1) is provided with a raw water tank overflow pipe (1-1) and a raw water tank emptying valve (1-2); urban domestic sewage enters a continuous flow AOA reactor (3) through a water inlet pump (2-1); the continuous flow AOA reactor (3) comprises an anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3); the anaerobic section (3-1) is provided with an anaerobic stirring device (3-4) and a water outlet pipe; the aerobic section (3-2) is provided with an aeration device which comprises an air pump (3-6), an aeration pipe (3-7), an aeration head (3-8) and an aerobic section pH/DO determinator (3-9); the anoxic section (3-3) is provided with an anoxic stirring device (3-5); part of effluent from the anaerobic section (3-1) enters a side treatment SBR reactor (5) through a mud valve (5-2), and effluent from the anoxic section (3-3) enters a sedimentation tank (4); the sludge at the bottom of the sedimentation tank (4) flows back to the anaerobic section (3-1) through a reflux pump (4-1), and the treated effluent is discharged through a water outlet pipe (4-2); the side treatment SBR reactor (5) is provided with an SBR stirring device (5-1) and a side treatment pH/DO tester (5-4), supernatant liquid after precipitation enters a water outlet water tank (6) through a drain valve (6-1), water is distributed and stored in the water distribution water tank (7), enters the side treatment SBR reactor (5) through a water distribution pump (7-1), and sludge-water mixture after side treatment is pumped into an anaerobic section (3-1) through a sludge pump (5-3).
The process comprises the following steps:
1) And (3) starting the process:
inoculating the whole-course sludge of the urban sewage treatment plant into the continuous flow AOA reactor (3), and keeping the sludge concentration in the continuous flow AOA reactor (3) at 2500-4500mg/L; the water inlet is urban domestic sewage, COD:150-200mg/L, NH 4 + -N:60-80mg/L, C/N is 2-3; the hydraulic retention time is 8-15h, and the sludge reflux ratio is 150%;
2) The process after starting is operated:
2.1 Continuous flow AOA reactor: sewage in the urban domestic sewage raw water tank (1) enters an anaerobic section (3-1) of the continuous flow AOA reactor (3) through a water inlet pump (2-1) to be subjected to anaerobic stirring, and the hydraulic retention time of the anaerobic section (3-1) is 2-3.5h; the mud valve (5-2) is opened periodically, 25% of mud-water mixture is discharged to the side treatment SBR reactor (5), the rest of mud-water mixture enters the aerobic section (3-2) for aeration, dissolved oxygen is controlled at 3-5mg/L, the aerobic hydraulic retention time is 3-7 h, then enters the anoxic section (3-3) for stirring, finally flows into the sedimentation tank (4), and treated water is discharged through the water outlet pipe (4-2). The mud valve (5-2) is in a closed state in the side treatment process, and the mud valve (5-2) is opened again after the side treatment is finished to receive the treated mud-water mixture.
2.2 Side-processing SBR reactor: precipitating the sludge-water mixture for 40-60 min after entering a side treatment SBR reactor (5), and then opening a drain valve (6-1) to drain the supernatant liquid containing phosphorus into a water outlet tank (6), wherein the drainage time is 10min, and the drainage ratio is 50%; the operation cycle of the side treatment SBR reactor (5) starts from water feeding of a water distribution water tank (7), water distribution without phosphorus in the water distribution water tank (7) enters the side treatment SBR reactor (5) through a water distribution pump (7-1), the water feeding ratio is 50%, the water feeding time is 5min, aeration is started while water feeding, the aeration time is 90-120min, the dissolved oxygen is controlled at 2-3mg/L, then anaerobic stirring is carried out for 90-120min, sedimentation is carried out for 40-60 min, the supernatant is discharged into a water outlet water tank (6), the water discharging time is 10min, the water discharging ratio is 50%, and one cycle operation is finished. After the side treatment is completed for 12-18 cycles, the sludge-water mixture remained in the side treatment SBR is pumped into the anaerobic section (3-1) through the sludge pump (5-3).
Compared with the traditional nitrification and denitrification process, the invention has the following advantages:
1) The influence on the main reactor is reduced through side treatment, and the microbial flora structure of the main reactor is not damaged;
2) The side treatment enriches the polysaccharide bacteria to inhibit the phosphorus accumulating bacteria, so that the competitive advantage of the polysaccharide bacteria in the main reactor to the carbon source is gradually enhanced, and the subsequent endogenous denitrification of the carbon source in the main reactor is facilitated;
3) The side treatment suppresses phosphorus accumulating bacteria, so that anaerobic phosphorus release in the main reactor is reduced, but aerobic phosphorus absorption still occurs, so that the phosphorus removal effect of the main reactor is not reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of a device for the process for treating the enriched polysaccharide bacteria by the continuous flow AOA to strengthen the deep denitrification of the domestic sewage with low carbon nitrogen ratio:
in the figure: 1-an urban domestic sewage raw water tank; 1-1, an overflow pipe of a raw water tank; 1-2-a raw water tank emptying valve; 2-1, a water inlet pump; 3-a continuous flow AOA reactor; 3-1-an anaerobic section; 3-2-an aerobic section; 3-anoxic zone; 3-4-anaerobic stirring device; 3-5-anoxic stirring device; 3-6-an air pump; 3-7-aeration pipe; 3-8-an aeration head; 3-9-an aerobic section pH/DO determinator; 4, a sedimentation tank; 4-1, a reflux pump; 4-2, namely a water outlet pipe; 5-side treatment SBR reactor; 5-1-SBR stirring device; 5-2-a mud valve; 5-3-sludge pump; 5-4-side treatment pH/DO meter; 6, a water outlet tank; 6-1, a drain valve; 7-a water distribution tank; 7-1, a water distribution pump.
Detailed Description
The invention will be described in detail with reference to the accompanying drawings and examples of embodiments.
The device used in the process comprises an urban domestic sewage raw water tank (1), a continuous flow AOA reactor (3), a sedimentation tank (4), a side treatment SBR reactor (5), a water outlet tank (6) and a water distribution tank (7) which are sequentially connected, wherein the aeration and stirring processes are completed by an online monitoring system and a feedback control system; the continuous flow AOA reactor (3) comprises the following anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3), wherein the volume of the anaerobic section (3-1): volume of the aerobic section (3-2): the volume of the anoxic section (3-3) is 1:1:2;
the urban domestic sewage raw water tank (1) is provided with a raw water tank overflow pipe (1-1) and a raw water tank emptying valve (1-2); urban domestic sewage enters a continuous flow AOA reactor (3) through a water inlet pump (2-1); the continuous flow AOA reactor (3) comprises an anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3); the anaerobic section (3-1) is provided with an anaerobic stirring device (3-4) and a water outlet pipe; the aerobic section (3-2) is provided with an aeration device which comprises an air pump (3-6), an aeration pipe (3-7), an aeration head (3-8) and an aerobic section pH/DO determinator (3-9); the anoxic section (3-3) is provided with an anoxic stirring device (3-5); part of effluent from the anaerobic section (3-1) enters a side treatment SBR reactor (5) through a mud valve (5-2), and effluent from the anoxic section (3-3) enters a sedimentation tank (4); the sludge at the bottom of the sedimentation tank (4) flows back to the anaerobic section (3-1) through a reflux pump (4-1), and the treated effluent is discharged through a water outlet pipe (4-2); the side treatment SBR reactor (5) is provided with an SBR stirring device (5-1) and a side treatment pH/DO tester (5-4), supernatant liquid after precipitation enters a water outlet water tank (6) through a drain valve (6-1), water is distributed and stored in the water distribution water tank (7), enters the side treatment SBR reactor (5) through a water distribution pump (7-1), and sludge-water mixture after side treatment is pumped into an anaerobic section (3-1) through a sludge pump (5-3).
The process comprises the following steps:
1) And (3) starting the process:
inoculating the whole-course sludge of the urban sewage treatment plant into the continuous flow AOA reactor (3), and keeping the sludge concentration in the continuous flow AOA reactor (3) at 2500-4500mg/L; the water inlet is urban domestic sewage, COD:150-200mg/L, NH4+ -N:60-80mg/L, C/N is 2-3; the hydraulic retention time is 8-15h, and the sludge reflux ratio is 150%;
2) The process after starting is operated:
2.1 Continuous flow AOA reactor: sewage in the urban domestic sewage raw water tank (1) enters an anaerobic section (3-1) of the continuous flow AOA reactor (3) through a water inlet pump (2-1) to be subjected to anaerobic stirring, and the hydraulic retention time of the anaerobic section (3-1) is 2-3.5h; the mud valve (5-2) is opened periodically, 25% of mud-water mixture is discharged to the side treatment SBR reactor (5), the rest of mud-water mixture enters the aerobic section (3-2) for aeration, dissolved oxygen is controlled at 3-5mg/L, the aerobic hydraulic retention time is 3-7 h, then enters the anoxic section (3-3) for stirring, finally flows into the sedimentation tank (4), and treated water is discharged through the water outlet pipe (4-2). The mud valve (5-2) is in a closed state in the side treatment process, and the mud valve (5-2) is opened again after the side treatment is finished to receive the treated mud-water mixture.
2.2 Side-processing SBR reactor: precipitating the sludge-water mixture for 40-60 min after entering a side treatment SBR reactor (5), and then opening a drain valve (6-1) to drain the supernatant liquid containing phosphorus into a water outlet tank (6), wherein the drainage time is 10min, and the drainage ratio is 50%; the operation cycle of the side treatment SBR reactor (5) starts from water feeding of a water distribution water tank (7), water distribution without phosphorus in the water distribution water tank (7) enters the side treatment SBR reactor (5) through a water distribution pump (7-1), the water feeding ratio is 50%, the water feeding time is 5min, aeration is started while water feeding, the aeration time is 90-120min, the dissolved oxygen is controlled at 2-3mg/L, then anaerobic stirring is carried out for 90-120min, sedimentation is carried out for 40-60 min, the supernatant is discharged into a water outlet water tank (6), the water discharging time is 10min, the water discharging ratio is 50%, and one cycle operation is finished. After the side treatment is completed for 12-18 cycles, the sludge-water mixture remained in the side treatment SBR is pumped into the anaerobic section (3-1) through the sludge pump (5-3).
Claims (1)
1. The device comprises an urban domestic sewage raw water tank (1), a continuous flow AOA reactor (3), a sedimentation tank (4), a side treatment SBR reactor (5), a water outlet tank (6) and a water distribution tank (7) which are sequentially connected, wherein the aeration and stirring processes are completed by an on-line monitoring system and a feedback control system; the continuous flow AOA reactor (3) comprises the following anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3), wherein the volume of the anaerobic section (3-1): volume of the aerobic section (3-2): the volume of the anoxic section (3-3) is 1:1:2;
the urban domestic sewage raw water tank (1) is provided with a raw water tank overflow pipe (1-1) and a raw water tank emptying valve (1-2); urban domestic sewage enters a continuous flow AOA reactor (3) through a water inlet pump (2-1); the continuous flow AOA reactor (3) comprises an anaerobic section (3-1), an aerobic section (3-2) and an anoxic section (3-3); the anaerobic section (3-1) is provided with an anaerobic stirring device (3-4) and a water outlet pipe; the aerobic section (3-2) is provided with an aeration device which comprises an air pump (3-6), an aeration pipe (3-7), an aeration head (3-8) and an aerobic section pH/DO determinator (3-9); the anoxic section (3-3) is provided with an anoxic stirring device (3-5); part of effluent from the anaerobic section (3-1) enters a side treatment SBR reactor (5) through a mud valve (5-2), and effluent from the anoxic section (3-3) enters a sedimentation tank (4); the sludge at the bottom of the sedimentation tank (4) flows back to the anaerobic section (3-1) through a reflux pump (4-1), and the treated effluent is discharged through a water outlet pipe (4-2); the side treatment SBR reactor (5) is provided with an SBR stirring device (5-1) and a side treatment pH/DO tester (5-4), supernatant liquid after precipitation enters a water outlet tank (6) through a drain valve (6-1), water is distributed and stored in the water distribution tank (7), enters the side treatment SBR reactor (5) through a water distribution pump (7-1), and sludge-water mixture after side treatment is pumped into an anaerobic section (3-1) through a sludge pump (5-3);
the method is characterized by comprising the following steps of:
1) And (3) starting the process:
inoculating the whole-course sludge of the urban sewage treatment plant into the continuous flow AOA reactor (3), and keeping the sludge concentration in the continuous flow AOA reactor (3) at 2500-4500mg/L; the water inlet is urban domestic sewage, COD:150-200mg/L, NH 4 + -N:60-80mg/L, C/N is 2-3; the hydraulic retention time is 8-15h, and the sludge reflux ratio is 150%;
2) The process after starting is operated:
2.1 Continuous flow AOA reactor: sewage in the urban domestic sewage raw water tank (1) enters an anaerobic section (3-1) of the continuous flow AOA reactor (3) through a water inlet pump (2-1) to be subjected to anaerobic stirring, and the hydraulic retention time of the anaerobic section (3-1) is 2-3.5h; a mud valve (5-2) is opened periodically, 25% of mud-water mixture is discharged to a side treatment SBR reactor (5), the rest of mud-water mixture enters an aerobic section (3-2) for aeration, dissolved oxygen is controlled at 3-5mg/L, aerobic hydraulic retention time is 3-7 h, then enters an anoxic section (3-3) for stirring, finally flows into a sedimentation tank (4), and treated water is discharged through a water outlet pipe (4-2); the mud valve (5-2) is in a closed state in the side treatment process, and the mud valve (5-2) is opened again after the side treatment is finished to receive the treated mud-water mixture;
2.2 Side-processing SBR reactor: precipitating the sludge-water mixture for 40-60 min after entering a side treatment SBR reactor (5), and then opening a drain valve (6-1) to drain the supernatant liquid containing phosphorus into a water outlet tank (6), wherein the drainage time is 10min, and the drainage ratio is 50%; the operation cycle of the side treatment SBR reactor (5) starts from water inlet of a water distribution water tank (7), water distribution without phosphorus in the water distribution water tank (7) enters the side treatment SBR reactor (5) through a water distribution pump (7-1), the water inlet ratio is 50%, the water inlet time is 5min, aeration is started while water is in, the aeration time is 90-120min, the dissolved oxygen is controlled at 2-3mg/L, then anaerobic stirring is carried out for 90-120min, precipitation is carried out for 40-60 min, the supernatant is discharged into a water outlet water tank (6), the water discharge time is 10min, the water discharge ratio is 50%, and one cycle operation is finished; after the side treatment is completed for 12-18 cycles, the sludge-water mixture remained in the side treatment SBR is pumped into the anaerobic section (3-1) through the sludge pump (5-3).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565016A (en) * | 2016-10-19 | 2017-04-19 | 青岛大学 | Urban sewage nitrogen and phosphorus removal device and method for realizing zero emission of surplus sludge through by-pass flow phosphorous removal |
| CN110436643A (en) * | 2019-08-15 | 2019-11-12 | 北京工业大学 | A kind of control method of side enrichment fusca xylanase |
| CN110436642A (en) * | 2019-08-07 | 2019-11-12 | 北京工业大学 | A kind of technique that side processing enrichment fusca xylanase strengthens city domestic sewage denitrogenation dephosphorizing |
| CN113415882A (en) * | 2021-06-04 | 2021-09-21 | 北京工业大学 | Single-stage SBR (sequencing batch reactor) post-anoxic and endogenous denitrification enhanced synchronous nitrification and denitrification process for deeply denitrifying and dephosphorizing low-C/N-ratio sewage |
| CN114477420A (en) * | 2022-02-16 | 2022-05-13 | 北京工业大学 | Method and device for realizing deep denitrification of sewage by virtue of double coupling of continuous flow AOA (argon oxygen decarburization) short-cut nitrification and endogenous short-cut denitrification and anaerobic ammonia oxidation |
-
2022
- 2022-09-25 CN CN202211169012.8A patent/CN115448443B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565016A (en) * | 2016-10-19 | 2017-04-19 | 青岛大学 | Urban sewage nitrogen and phosphorus removal device and method for realizing zero emission of surplus sludge through by-pass flow phosphorous removal |
| CN110436642A (en) * | 2019-08-07 | 2019-11-12 | 北京工业大学 | A kind of technique that side processing enrichment fusca xylanase strengthens city domestic sewage denitrogenation dephosphorizing |
| CN110436643A (en) * | 2019-08-15 | 2019-11-12 | 北京工业大学 | A kind of control method of side enrichment fusca xylanase |
| CN113415882A (en) * | 2021-06-04 | 2021-09-21 | 北京工业大学 | Single-stage SBR (sequencing batch reactor) post-anoxic and endogenous denitrification enhanced synchronous nitrification and denitrification process for deeply denitrifying and dephosphorizing low-C/N-ratio sewage |
| CN114477420A (en) * | 2022-02-16 | 2022-05-13 | 北京工业大学 | Method and device for realizing deep denitrification of sewage by virtue of double coupling of continuous flow AOA (argon oxygen decarburization) short-cut nitrification and endogenous short-cut denitrification and anaerobic ammonia oxidation |
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