CN100494092C - Sewage treatment process and apparatus integrating dissolved cell, reinforced denitrifying and dephosphorization - Google Patents
Sewage treatment process and apparatus integrating dissolved cell, reinforced denitrifying and dephosphorization Download PDFInfo
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- CN100494092C CN100494092C CNB2006101249888A CN200610124988A CN100494092C CN 100494092 C CN100494092 C CN 100494092C CN B2006101249888 A CNB2006101249888 A CN B2006101249888A CN 200610124988 A CN200610124988 A CN 200610124988A CN 100494092 C CN100494092 C CN 100494092C
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Abstract
The present invention relates to sewage treating process and apparatus. The integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process includes the following steps: 1. infusing domestic sewage into sequencing batch active sludge reactor; 2. centrifugally separating the treated domestic sewage into supernatant exhausted outwards and suspended solid enterig Mg salt lysis reactor; 3. throwing alkali solution containing Mg(OH)2 into the Mg salt lysis reactor for reaction; and 4. refluxing the sludge mixture liquid after treatment in the Mg salt lysis reactor to the sequencing batch active sludge reactor. The steps 1-4 are performed circularly, and when the integrated lysis reinforced denitrifying and dephosphorizing sewage treatment pauses, magnesium ammonium phosphate is recovered from the sequencing batch active sludge reactor. The present invention has the features of no sludge draining, high sewage treating effect and simple operation.
Description
Technical field
The present invention relates to a kind of sewage water treatment method and equipment thereof, particularly relate to a kind of denitrifying and dephosphorizing sewage treatment process and equipment thereof.
Background technology
Biological dephosphorize denitrification (Biological Nutrient Removal-BNR) method has the advantage of organic pollutants such as N, P in the synchronous removal sewage and obtains deep research and application widely.Present biological dephosphorize denitrification technology is mainly come according to the variation development of size, arrangement, quantity increase and decrease and the mixed solution circulation and the reflux type in anaerobism, anoxic, pond such as aerobic.Technologies such as UCT, the VIP that is come by the A2/O process modification, JHB have for example all obtained the effect of good synchronous denitrification dephosphorizing.In addition, also have by control aeration oxygen-supplying amount and in structures, form the effect that anaerobism and anaerobic environment realize synchronous denitrification dephosphorizing, for example oxidation ditch and SBR technology.The treatment technology that is applied in the actual sewage treatment process mainly contains: Bardenpho method, A/O method, MUCT method, Phoredox method etc., these technologies mainly are to carry out for the following point that solves in the sewage disposal: realize the nitrated of ammonia nitrogen in the sewage, must guarantee arranged the mud age of long period and will realize dephosphorization the autotrophy nitrifier, then must be arranged the mud age of short period for polyP bacteria (PAOs).The technology of these actual motions has realized the contradiction of the sludge age that in sewage water denitrification and dephosphorization process dephosphorization bacterial is different with nitrobacteria.Yet these treatment processs exist investment and running cost height, shortcomings such as complex process.Development along with saprobia dephosphorization denitrogenation technology, the method of tradition research technology structures has forwarded the research to the denitrogenation dephosphorizing microbiological property to, and obtained great breakthrough, the particularly discovery of denitrification phosphorus-collecting bacterium (DPBs-Denitrifying P-bacteria), this class polyP bacteria unique distinction just is that it not only can be with oxygen as the poly-phosphorus of electron acceptor(EA), and under anoxia condition, can replace dissolved oxygen to gather phosphorus with nitrate as electron acceptor(EA), simultaneously nitrate reduction is become N
2Or nitride, and the single mud biochemical treatment system that takes off (DenitrifyingPAOs-DNPAO) principle in conjunction with the biological denitrification dephosphorization low with simple for structure, reduced investment, working cost, be easy to realize advantages such as on-line automatic control, just obtaining extensive studies.Yet this technology exists denitrification dephosphorization and denitrification effect problem of unstable and how to handle excess sludge simultaneously and also become key technical problem to be solved is arranged.At present, the common technology of domestic and international existing denitrification dephosphorization has: (1) regulates anaerobism--anoxic---aerobic (A---AN---O) in the sbr reactor device operation scheme realizes the purpose of intensified anti-nitrated phosphorous-removal in a reactor.(2) add carbon source in the reactor denitrification dephosphorization stage,,, realize the purpose of intensified anti-nitrated phosphorous-removal to improve the C/N in denitrification stage as methyl alcohol.(3) preliminary sedimentation tank mud or the second pond mud with water treatment building carries out the nitrated realization intensified anti-nitrated phosphorous-removal of anaerobism.Yet there is the operating performance instability in the technology of these denitrification dephosphorizations, the problem that the one-time investment cost is too high.
Summary of the invention
The object of the present invention is to provide a kind of do not have mud discharging, good sewage processing effect, integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process and equipment thereof simple to operate.
To achieve these goals, technical scheme of the present invention is: integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process is characterized in that it comprises the steps:
1), sanitary sewage injects sequencing batch activated sludge reactor, sequencing batch activated sludge reactor is according to instantaneous water inlet-anaerobism stirring-aerobic aeration-staticly settling four steps carries out the processing of sanitary sewage;
2), the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes, suspended solids enters the molten born of the same parents' reactor of Mg salt;
3), entering suspended solids in the molten born of the same parents' reactor of Mg salt adds and contains Mg (OH)
2Alkali lye carry out alkali thermosol born of the same parents, it is molten to make microbial cell that born of the same parents take place, control alkali thermosol born of the same parents temperature condition is T=40 ℃-80 ℃, air pressure is 1-2atm, the reaction times is 0.5h-3h; Wherein suspended solids with contain Mg (OH)
2The weight ratio of alkali lye be: suspended solids/contain Mg (OH)
2Alkali lye=90-99.9/0.1-10;
4), the mud mixed liquid after alkali thermosol born of the same parents handle is back in the sequencing batch activated sludge reactor,
5) circulation step 1)-step 4).
A kind of integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device of realizing aforesaid method, it comprises foul water tank 1, whipping appts 4, sbr reactor device 5, whizzer 10, the input terminus of first water pipe 3 is connected with the bottom of foul water tank 1, the output terminal of first water pipe 3 is positioned at sbr reactor device 5, the first water pipes 3 and is provided with first stopping valve 2; Be provided with whipping appts 4 in the sbr reactor device 5; The input terminus of second water pipe 7 is connected with the bottom of sbr reactor device 5, second water pipe 7 is provided with second stopping valve 6, the input terminus of the output terminal of second water pipe 7 and whizzer 10 links, the supernatant liquor output terminal of whizzer 10 is connected with the outer comb 11 of supernatant liquor, and the suspended solids output terminal of whizzer 10 is connected with the 4th water pipe 12; It is characterized in that: the output terminal of the 4th water pipe 12 is connected with the input port of the molten born of the same parents' reactor 14 of Mg salt, in the molten born of the same parents' reactor 14 of Mg salt is cavity, the molten born of the same parents' reactor of Mg salt 14 upper ends are opening, the output port of the molten born of the same parents' reactor 14 of Mg salt is connected with the input terminus of the 5th water pipe 16, the output terminal of the 5th water pipe 16 is connected with the input port of sludge reflux pump 17, the output port of sludge reflux pump 17 is connected with the input terminus of the 6th water pipe 19, and the output terminal of the 6th water pipe 19 is positioned at sbr reactor device 5.
Described the 5th water pipe 16 is provided with the 4th stopping valve 15, the six water pipes 19 and is provided with the 5th stopping valve 18.
Compare with existing denitrifying phosphorus removal technique, the present invention has following beneficial effect: (1) is owing to the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes (promptly purifying waste water), and suspended solids enters the molten born of the same parents' reactor of Mg salt, mud mixed liquid after alkali thermosol born of the same parents handle is back in the sbr reactor device, circulation step 1)-step 4), owing to the existence of itrogenous organic substance is arranged in the sanitary sewage that sequencing batch activated sludge reactor (SBR) is handled, can generate magnesium ammonium phosphate (MgNH
4PO
4), when the integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device quits work with magnesium ammonium phosphate (MgNH
4PO
4) reclaim and can be used for preparing struvite; Therefore whole process system can realize not having mud discharging in the cycle of operation.(2) this process system has been strengthened denitrifying effect, can reach more than 95% good sewage processing effect to the total phosphorus TP clearance in the sanitary sewage.(3) whole processing unit is mainly formed running maintenance conveniently by common SBR, whizzer, alkali thermosol born of the same parents reactor etc., and operation is simple.Handle back mud simultaneously and be rich in magnesium ammonium phosphate (MgNH
4PO
4) can prepare struvite fertilizer.
Description of drawings
Fig. 1 is integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device figure of the present invention
Among the figure: 1-foul water tank, 2-first stopping valve, 3-first water pipe, 4-whipping appts (motor and paddle wheel), 5-SBR reactor (sequencing batch activated sludge reactor), 6-second stopping valve, 7-second water pipe, 8-the 3rd stopping valve, 9-the 3rd water pipe (rising pipe), 10-whizzer, the outer comb of 11-supernatant liquor, 12-the 4th water pipe, 13-add and contain Mg (OH)
2Alkali lye, the molten born of the same parents' reactor of 14-Mg salt, 15-the 4th stopping valve, 16-the 5th water pipe, 17-sludge reflux pump, 18-the 5th stopping valve, 19-the 6th water pipe.
Embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
Integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process, it comprises the steps:
1), sanitary sewage injects sequencing batch activated sludge reactor (SBR), sequencing batch activated sludge reactor useful volume 20L adds active sludge 10L, handles sanitary sewage 10L in the reaction time; Sequencing batch activated sludge reactor is according to instantaneous water inlet-anaerobism stirring-aerobic aeration-staticly settling four steps carries out the processing of sanitary sewage, and anaerobism stirred 3 hours, and aerobic aeration 2 hours staticly settled 1 hour;
2), the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes (promptly purifying waste water), suspended solids enters the molten born of the same parents' reactor of Mg salt;
3), entering suspended solids (being centrifugal filter residue) in the molten born of the same parents' reactor of Mg salt adds and contains Mg (OH)
2Alkali lye carry out alkali thermosol born of the same parents, it is molten to make microbial cell that born of the same parents take place, control alkali thermosol born of the same parents temperature condition is T=40 ℃, air pressure is 1atm (1 normal atmosphere), the reaction times is 0.5h; Wherein suspended solids with contain Mg (OH)
2The weight ratio of alkali lye be: suspended solids/contain Mg (OH)
2Alkali lye=90/10;
4), the mud mixed liquid after alkali thermosol born of the same parents handle is back in the sequencing batch activated sludge reactor,
5) circulation step 1)-step 4), realize the effect of intensified anti-nitrated phosphorous-removal effect and mud decrement; Because the existence of itrogenous organic substance is arranged in the sanitary sewage, the active sludge solid that carries out behind the alkali thermosol born of the same parents can generate magnesium ammonium phosphate (MgNH in sequencing batch activated sludge reactor
4PO
4), when the integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device quits work with the magnesium ammonium phosphate (MgNH in the sequencing batch activated sludge reactor
4PO
4) reclaim and can be used for preparing struvite.
The described Mg (OH) that contains
2Alkali lye in Mg (OH)
2Weight content be 95%, the weight content of NaOH or KOH is 5%.
Embodiment 2:
Integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process, it comprises the steps:
1), sanitary sewage injects sequencing batch activated sludge reactor (SBR), sequencing batch activated sludge reactor useful volume 20L adds active sludge 10L, handles sanitary sewage 10L in the reaction time; Sequencing batch activated sludge reactor is according to instantaneous water inlet-(3 hours)-aerobic aeration (2 hours)-staticly settling (1 hour) four steps carries out the processing of sanitary sewage in anaerobism stirring;
2), the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes (promptly purifying waste water), suspended solids enters the molten born of the same parents' reactor of Mg salt;
3), entering suspended solids (being centrifugal filter residue) in the molten born of the same parents' reactor of Mg salt adds and contains Mg (OH)
2Alkali lye carry out alkali thermosol born of the same parents, it is molten to make microbial cell that born of the same parents take place, control alkali thermosol born of the same parents temperature condition is T=60 ℃, air pressure is 1.5atm (1.5 normal atmosphere), the reaction times is 2h; Wherein suspended solids with contain Mg (OH)
2The weight ratio of alkali lye be: suspended solids/contain Mg (OH)
2Alkali lye=96.0/4.0;
4), the mud mixed liquid after alkali thermosol born of the same parents handle is back in the sequencing batch activated sludge reactor,
5) circulation step 1)-step 4), realize the effect of intensified anti-nitrated phosphorous-removal effect and mud decrement; Because the existence of itrogenous organic substance is arranged in the sanitary sewage, the active sludge solid that carries out behind the alkali thermosol born of the same parents can generate magnesium ammonium phosphate (MgNH in sequencing batch activated sludge reactor
4PO
4), when the integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device quits work with the magnesium ammonium phosphate (MgNH in the sequencing batch activated sludge reactor
4PO
4) reclaim and can be used for preparing struvite.
The described Mg (OH) that contains
2Alkali lye in Mg (OH)
2Weight content be 97%, the weight content of NaOH or KOH is 3%.
Embodiment 3:
Integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process, it comprises the steps:
1), sanitary sewage injects sequencing batch activated sludge reactor (SBR), sequencing batch activated sludge reactor useful volume 20L adds active sludge 10L, handles sanitary sewage 10L in the reaction time; Sequencing batch activated sludge reactor is according to instantaneous water inlet-(3 hours)-aerobic aeration (2 hours)-staticly settling (1 hour) four steps carries out the processing of sanitary sewage in anaerobism stirring;
2), the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes (promptly purifying waste water), suspended solids enters the molten born of the same parents' reactor of Mg salt;
3), entering suspended solids (being centrifugal filter residue) in the molten born of the same parents' reactor of Mg salt adds and contains Mg (OH)
2Alkali lye carry out alkali thermosol born of the same parents, it is molten to make microbial cell that born of the same parents take place, control alkali thermosol born of the same parents temperature condition is T=80 ℃, air pressure is 2atm (2 normal atmosphere), the reaction times is 3h; Wherein suspended solids with contain Mg (OH)
2The weight ratio of alkali lye be: suspended solids/contain Mg (OH)
2Alkali lye=99.9/0.1;
4), the mud mixed liquid after alkali thermosol born of the same parents handle is back in the sequencing batch activated sludge reactor,
5) circulation step 1)-step 4), realize the effect of intensified anti-nitrated phosphorous-removal effect and mud decrement; Because the existence of itrogenous organic substance is arranged in the sanitary sewage, the active sludge solid that carries out behind the alkali thermosol born of the same parents can generate magnesium ammonium phosphate (MgNH in sequencing batch activated sludge reactor
4PO
4), when the integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device quits work with the magnesium ammonium phosphate (MgNH in the sequencing batch activated sludge reactor
4PO
4) reclaim and can be used for preparing struvite.
The described Mg (OH) that contains
2Alkali lye in Mg (OH)
2Weight content be 100%, the weight content of NaOH or KOH is 0%.
As shown in Figure 1, a kind of integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device of realizing embodiment 1-3 method, it comprises foul water tank 1, whipping appts 4, sbr reactor device 5, whizzer 10, the input terminus of first water pipe 3 is connected with the bottom of foul water tank 1, the output terminal of first water pipe 3 is positioned at sbr reactor device 5, the first water pipes 3 and is provided with first stopping valve 2; Be provided with whipping appts 4 in the sbr reactor device 5, sbr reactor device 5 is provided with the 3rd water pipe 9, the three water pipes 9 and is provided with the 3rd stopping valve 8; The input terminus of second water pipe 7 is connected with the bottom of sbr reactor device 5, second water pipe 7 is provided with second stopping valve 6, the input terminus of the output terminal of second water pipe 7 and whizzer 10 links, the supernatant liquor output terminal of whizzer 10 is connected with the outer comb 11 of supernatant liquor, and the suspended solids output terminal of whizzer 10 is connected with the 4th water pipe 12; The output terminal of the 4th water pipe 12 is connected with the input port of the molten born of the same parents' reactor 14 of Mg salt, is cavity in the molten born of the same parents' reactor 14 of Mg salt, and the molten born of the same parents' reactor of Mg salt 14 upper ends are opening, add to contain Mg (OH)
2Alkali lye 13 from the molten born of the same parents' reactor 14 upper end open inputs of Mg salt, the output port of the molten born of the same parents' reactor 14 of Mg salt is connected with the input terminus of the 5th water pipe 16, the 5th water pipe 16 is provided with the 4th stopping valve 15, the output terminal of the 5th water pipe 16 is connected with the input port of sludge reflux pump 17, the output port of sludge reflux pump 17 is connected with the input terminus of the 6th water pipe 19, the output terminal that the 6th water pipe 19 is provided with the 5th stopping valve 18, the six water pipes 19 is positioned at sbr reactor device 5.
Claims (3)
1. integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process is characterized in that it comprises the steps:
1), sanitary sewage injects sequencing batch activated sludge reactor, sequencing batch activated sludge reactor is according to instantaneous water inlet-anaerobism stirring-aerobic aeration-staticly settling four steps carries out the processing of sanitary sewage;
2), the active sludge in the sequencing batch activated sludge reactor separates the mixed solution supernatant liquor by centrifugal after treatment with the sanitary sewage mixed solution with suspended solids, supernatant liquor effluxes, suspended solids enters the molten born of the same parents' reactor of Mg salt;
3), entering suspended solids in the molten born of the same parents' reactor of Mg salt adds and contains Mg (OH)
2Alkali lye carry out alkali thermosol born of the same parents, it is molten to make microbial cell that born of the same parents take place, control alkali thermosol born of the same parents temperature condition is T=40 ℃-80 ℃, air pressure is 1-2atm, the reaction times is 0.5h-3h; Wherein suspended solids with contain Mg (OH)
2The weight ratio of alkali lye be: suspended solids/contain Mg (OH)
2Alkali lye=90-99.9/0.1-10;
4), the mud mixed liquid after alkali thermosol born of the same parents handle is back in the sequencing batch activated sludge reactor;
5), circulation step 1)-step 4);
When 6), quitting work the magnesium ammonium phosphate in the sequencing batch activated sludge reactor is reclaimed.
2.. integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device of realizing claim 1 method, it comprises foul water tank (1), whipping appts (4), sbr reactor device (5), whizzer (10), the input terminus of first water pipe (3) is connected with the bottom of foul water tank (1), the output terminal of first water pipe (3) is positioned at sbr reactor device (5), and first water pipe (3) is provided with first stopping valve (2); Be provided with whipping appts (4) in the sbr reactor device (5); The input terminus of second water pipe (7) is connected with the bottom of sbr reactor device (5), second water pipe (7) is provided with second stopping valve (6), the input terminus of the output terminal of second water pipe (7) and whizzer (10) links, the supernatant liquor output terminal of whizzer (10) is connected with the outer comb (11) of supernatant liquor, and the suspended solids output terminal of whizzer (10) is connected with the 4th water pipe (12); It is characterized in that: the output terminal of the 4th water pipe (12) is connected with the input port of the molten born of the same parents' reactor of Mg salt (14), in the molten born of the same parents' reactor of Mg salt (14) is cavity, the molten born of the same parents' reactor of Mg salt (14) upper end is an opening, the output port of the molten born of the same parents' reactor of Mg salt (14) is connected with the input terminus of the 5th water pipe (16), the output terminal of the 5th water pipe (16) is connected with the input port of sludge reflux pump (17), the output port of sludge reflux pump (17) is connected with the input terminus of the 6th water pipe (19), and the output terminal of the 6th water pipe (19) is positioned at sbr reactor device (5).
3. integrated lysis reinforced denitrifying and dephosphorizing sewage disposal device according to claim 2 is characterized in that: described the 5th water pipe (16) is provided with the 4th stopping valve (15), and the 6th water pipe (19) is provided with the 5th stopping valve (18).
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|---|---|---|---|
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|---|---|---|---|
| CNB2006101249888A CN100494092C (en) | 2006-11-09 | 2006-11-09 | Sewage treatment process and apparatus integrating dissolved cell, reinforced denitrifying and dephosphorization |
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| CN104529122B (en) * | 2014-12-10 | 2017-01-11 | 天津壹鸣环境科技股份有限公司 | Reducing and recycling comprehensive utilization method for water body sediments |
| CN111153494A (en) * | 2020-01-14 | 2020-05-15 | 浙江工业大学 | Catering wastewater treatment device and method for sludge collection and digestion |
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Non-Patent Citations (4)
| Title |
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| 序批式反应器工艺的研究进展. 廖鑫凯，张昊然，陈文谋，邓旭，李清彪.化工环保，第25卷第1期. 2005 |
| 序批式反应器工艺的研究进展. 廖鑫凯，张昊然，陈文谋，邓旭，李清彪.化工环保，第25卷第1期. 2005 * |
| 污泥减量化技术的研究进展. 梁鹏，黄霞，钱易，丁国际.环境污染治理技术与设备，第4卷第1期. 2003 |
| 污泥减量化技术的研究进展. 梁鹏，黄霞，钱易，丁国际.环境污染治理技术与设备，第4卷第1期. 2003 * |
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Assignee: Guangxi Hualan Design (Group) Co., Ltd. Assignor: Wuhan University of Technology Contract record no.: 2011450000082 Denomination of invention: Integrated lysis reinforced denitrifying and dephosphorizing sewage treatment process and apparatus Granted publication date: 20090603 License type: Exclusive License Open date: 20070606 Record date: 20110922 |
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