CN102531290A - Method and device for sludge digestive fluid two-level biological denitrification - Google Patents
Method and device for sludge digestive fluid two-level biological denitrification Download PDFInfo
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- CN102531290A CN102531290A CN2012100088418A CN201210008841A CN102531290A CN 102531290 A CN102531290 A CN 102531290A CN 2012100088418 A CN2012100088418 A CN 2012100088418A CN 201210008841 A CN201210008841 A CN 201210008841A CN 102531290 A CN102531290 A CN 102531290A
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Abstract
The invention provides a method and a device for sludge digestive fluid two-level biological denitrification, wherein the device comprises a sludge digestive fluid original water tank, a denitrification reactor, an autotrophic denitrification reactor and a secondary sedimentation tank; the sludge digestive fluid original water tank is provided with an overflow pipe and a blow-down pipe; the denitrification reactor is an upflow anaerobic sludge blanket (UASB) reactor, and is provided with a triphase separator, an exhaust pipe and a water outlet pipe; the autotrophic denitrification reactor comprises an anoxic zone, an aerobic zone, an anoxia biological film zone, the aerobic zone and the anoxia biological film zone; the anoxic zone has a stirrer and an agitating valve; the aerobic zone is provided with an aeration nozzle; the anoxia biological film zone is filled with sponge filler, and has the stirrer and the agitating valve; the secondary sedimentation tank is provided with a water outlet pipe, a sludge return pipe, a residual sludge pipe and a water outlet return pipe; the sludge digestive fluid original water tank is connected with an inlet valve of the denitrification reactor through a water pump; the water outlet pipe of the denitrification reactor is connected with the water inlet valve of the autotrophic denitrification reactor; an outlet valve of the autotrophic denitrification reactor is connected with a connecting pipe of the secondary sedimentation tank; and part outlet water is connected with the denitrification reactor through a water outlet reflux pump.
Description
Technical field
The present invention relates to the dirty water living creature processing technique field, relate in particular to a kind of sludge digestion liquid two-stage biological denitrogenation method and device.
Background technology
It is the principal mode of municipal wastewater treatment plant energy recovery that mud produces methane, in its process, produces high ammonia nitrogen sludge digestion liquid, because of organic content is low, and basicity deficiency etc., and be difficult to reach the purpose of high-efficiency biological denitrification.Sludge digestion liquid nitrogen content accounts for the 15-25% of Sewage Plant total nitrogen content; If can not effectively carry out denitrogenation processing; And directly drain into Sewage Plant sewage main flow area; Can make the municipal effluent of original carbon source shortage lack carbon source more, and make the municipal effluent plant effluent be difficult to reach national specified discharge standard.
The solution that appears as this problem of short distance nitration+Anammox combination autotrophic denitrification technology provides new thinking; The part ammonia nitrogen is through the short distance nitration effect; Be oxidized to nitrite nitrogen,, thereby reach the purpose of autotrophic denitrification then with the reaction of remaining ammonia nitrogen generation Anammox.This technology need not organism as carbon source, therefore for organic produce methane recovery energy favourable condition is provided; Only there is the part ammonia nitrogen to be oxidized to nitrite nitrogen, therefore can reduces aeration energy consumption, save working cost; These technology greenhouse gas emissions are few simultaneously, and sludge yield is few.But sludge digestion liquid Anammox is handled and mostly to be adopted SRB reactor drum or CSTR reactor drum, and nitric nitrogen can't be removed in the water outlet, limit value its nitric efficiency.
Therefore, need a urgent technical problem that solves to be exactly instantly: how can propose a kind of effective measures, to solve the deficiency that exists in the prior art.
Summary of the invention
Technical problem to be solved by this invention provides a kind of sludge digestion liquid two-stage biological denitrogenation method and device; Make full use of the nitric nitrogen that organic carbon source removal autotrophic denitrification produces in the sludge digestion liquid, then go down except that the ammonia nitrogen in the mud Digestive system in no organic condition through short distance nitration/Anammox autotrophic denitrification technology.
In order to solve the problems of the technologies described above, the invention provides a kind of sludge digestion liquid two-stage biological NRU, comprise sludge digestion liquid raw water box (1), denitrification reactor (2), self-supported denitrification reactor (3), second pond (4); Said sludge digestion liquid raw water box (1) is provided with upflow tube (1.1) and blow-down pipe (1.2); Said denitrification reactor (2) is a UASB reactor drum, is provided with triphase separator and vapor pipe (2.1) and rising pipe (2.2); Said self-supported denitrification reactor (3) comprises 5 lattice chambers, is followed successively by oxygen-starved area, aerobic zone, anoxic microbial film district, aerobic zone and anoxic microbial film district; The oxygen-starved area is provided with whisking appliance (3.6) and stirring arm (3.7); Aerobic zone is provided with aeration head (3.8); Anoxic microbial film district filling sponge filler (3.9) is provided with whisking appliance and stirring arm simultaneously; Said second pond is provided with rising pipe (4.1), mud return line (4.2), excess sludge pipe (4.3) and effluent recycling pipe (4.4) for (4);
Sludge digestion liquid raw water box (1) links to each other with denitrification reactor water intaking valve (2.2) through intake pump (2.1); Denitrification reactor rising pipe (2.4) links to each other with self-supported denitrification reactor water intaking valve (3.1); Self-supported denitrification reactor outlet valve (3.11) links to each other with second pond pipe connecting (3.12); The part water outlet is connected with denitrification reactor (2) through effluent recycling pump (6).
Further, said sludge digestion liquid raw water box (1) is a closed box.
Further, said self-supported denitrification reactor (3) is a uncovered pond body.
Further, the packing ratio of said sponge filler is 10-50%.
Further, said second pond is a vertical sedimentation basin for (4).
Further, said denitrification reactor adopts synthetic glass to process.
Further, said denitrification reactor adopts steel plate or concrete to process.
The present invention also provides a kind of sludge digestion liquid two-stage biological denitrogenation method, comprising:
To have the municipal wastewater treatment plant active sludge of denitrification activity, add to denitrification reactor;
With short distance nitration mud or municipal wastewater treatment plant active sludge, add to self-supported denitrification reactor;
Add the sponge filler that hangs up properly the Anammox mycoderm in anoxic microbial film district;
The effluent recycling amount is 1:1-1:3 with the ratio of Digestive system flooding quantity, when COD is higher in the denitrification reactor water outlet, increases the effluent recycling amount;
The self-supported denitrification reactor return sludge ratio is controlled between the 30-100%, when mud SVI hangs down, reduces return sludge ratio;
Self-supported denitrification reactor aerobic zone and anoxic microbial film district volume ratio are 1:1-8:1, and the aerobic zone dissolved oxygen concentration is controlled at 0.3-0.8mg/L, anoxic microbial film district nitrous acid oxygen nitrogen concentration>2mg/L, reduce the aerobic zone dissolved oxygen.
Further, the packing ratio of sponge filler is 10-50%.
Further, said denitrification reactor adopts synthetic glass to process.
To sum up, a kind of sludge digestion liquid two-stage biological denitrogenation method provided by the invention and device have the following advantages:
1) denitrifying bacteria and autotrophic bacteria (ammonia oxidation bacteria and anaerobic ammonia oxidizing bacteria) are divided in two independently in the system, thereby have avoided the influence of the quick breeding of heterotrophic denitrification bacterium the autotrophic denitrification flora, and then the stability of assurance system operation;
2) make full use of organism limited in the sludge digestion liquid, carry out producing nitric nitrogen in the denitrification removal autotrophic denitrification process, thereby improved the denitrification effect of system;
3) aerobic zone and oxygen-starved area are set in the self-supported denitrification reactor respectively, thereby have avoided the restraining effect of oxygen, and then guarantee the anaerobic ammonia oxidizing bacteria high reactivity, improved the nitric efficiency of system anaerobic ammonia oxidizing bacteria;
4) nitrogen has reduced municipal wastewater treatment plant main flow area nitrogen load through the efficient removal of this technology in the sludge digestion liquid, can reduce the total nitrogen content in the water outlet, and guarantee is provided for water outlet is up to standard.
Description of drawings
Fig. 1 is the structural representation of a kind of sludge digestion liquid two-stage biological NRU of the present invention;
Fig. 2 is the schematic flow sheet of a kind of sludge digestion liquid two-stage biological denitrogenation method of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Reference is shown in Figure 1 to be a kind of structural representation of sludge digestion liquid two-stage biological NRU, comprises sludge digestion liquid raw water box 1, denitrification reactor 2, self-supported denitrification reactor 3, second pond 4, sludge reflux pump 5, effluent recycling pump 6; Said sludge digestion liquid raw water box 1 is provided with upflow tube 1.1 and blow-down pipe 1.2; Said denitrification reactor 2 is a UASB reactor drum, is provided with triphase separator and vapor pipe 2.1 and rising pipe 2.2; Said self-supported denitrification reactor 3 comprises 5 lattice chambers, is followed successively by oxygen-starved area, aerobic zone, anoxic microbial film district, aerobic zone and anoxic microbial film district; The oxygen-starved area is provided with whisking appliance 3.6 and stirring arm 3.7; Aerobic zone is provided with aeration head 3.8; Anoxic microbial film district filling sponge filler 3.9 is provided with whisking appliance and stirring arm simultaneously; Said second pond is 4 to be provided with rising pipe 4.1, mud return line 4.2, excess sludge pipe 4.3 effluent recycling pipes 4.4.Said denitrification reactor adopts steel plate or concrete to process.
Concrete test water is taken from Gaobeidian City, Beijing municipal wastewater treatment plant digested sludge dehydration liquid, and its water quality is following: COD is 110-250mg/L; NH
4 +-N is 200-400mg/L, NO
2 --N≤1.5mg/L, NO
3 --N is below detectability, and basicity is 1000-1800mg/L, and pH is 7.0-7.8.Denitrification reactor adopts synthetic glass to process, and the reaction zone internal diameter is 8cm, and effective volume is 8L; Every lattice chamber volume is 8L in the self-supported denitrification reactor, and anoxic microbial film district sponge filler packing ratio is 30%.
Referring to Fig. 2 is a kind of sludge digestion liquid two-stage biological denitrogenation method schema according to the invention, comprising:
S201 will have the municipal wastewater treatment plant active sludge of denitrification activity, add to denitrification reactor;
S202 with short distance nitration mud or municipal wastewater treatment plant active sludge, adds to self-supported denitrification reactor;
S203 adds the sponge filler that hangs up properly the Anammox mycoderm in anoxic microbial film district;
S204, the effluent recycling amount is 1:1-1:3 with the ratio of Digestive system flooding quantity, when COD is higher in the denitrification reactor water outlet, increases the effluent recycling amount;
S205, the self-supported denitrification reactor return sludge ratio is controlled between the 30-100%, when mud SVI hangs down, reduces return sludge ratio;
S206, self-supported denitrification reactor aerobic zone and anoxic microbial film district volume ratio are 1:1-8:1, the aerobic zone dissolved oxygen concentration is controlled at 0.3-0.8mg/L, anoxic microbial film district nitrous acid oxygen nitrogen concentration>2mg/L, reduce the aerobic zone dissolved oxygen.
Concrete operation is following:
1) start-up system: will have Gaobeidian City's Sewage Plant active sludge of denitrification activity, and add to denitrification reactor; With short distance nitration mud, add to self-supported denitrification reactor, add the sponge filler that hangs up properly the Anammox mycoderm in anoxic microbial film district simultaneously, its packing ratio is 30%, the effluent recycling amount is 1:1 with the ratio of Digestive system flooding quantity; Return sludge ratio is 50%, and the aerobic zone dissolved oxygen is 0.5mg/L.
Regulate operation as follows when 2) moving:
2.1) the effluent recycling amount is 1:1-1:3 with the ratio of Digestive system flooding quantity, when COD is higher in denitrification reactor 2 water outlets, increases the effluent recycling amount;
2.2) the self-supported denitrification reactor return sludge ratio is controlled between the 30-100%, when mud SVI hangs down, reduces return sludge ratio;
2.3) self-supported denitrification reactor aerobic zone and anoxic microbial film district volume ratio be 1:1-8:1, the aerobic zone dissolved oxygen concentration is controlled at 0.3-0.8mg/L, anoxic microbial film district nitrous acid oxygen nitrogen concentration>2mg/L, reduce the aerobic zone dissolved oxygen;
Test-results shows: after stable, the maximum nitrogen of self-supported denitrification reactor is removed speed and is about 0.8kgN/m
3D, water outlet NH
4 +-N concentration 32-75mg/L, water outlet COD are 45-68mg/L.
More than a kind of sludge digestion liquid two-stage biological denitrogenation method provided by the present invention and device have been carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a sludge digestion liquid two-stage biological NRU is characterized in that, comprises sludge digestion liquid raw water box (1), denitrification reactor (2), self-supported denitrification reactor (3), second pond (4); Said sludge digestion liquid raw water box (1) is provided with upflow tube (1.1) and blow-down pipe (1.2); Said denitrification reactor (2) is a UASB reactor drum, is provided with triphase separator and vapor pipe (2.1) and rising pipe (2.2); Said self-supported denitrification reactor (3) comprises 5 lattice chambers, is followed successively by oxygen-starved area, aerobic zone, anoxic microbial film district, aerobic zone and anoxic microbial film district; The oxygen-starved area is provided with whisking appliance (3.6) and stirring arm (3.7); Aerobic zone is provided with aeration head (3.8); Anoxic microbial film district filling sponge filler (3.9) is provided with whisking appliance and stirring arm simultaneously; Said second pond is provided with rising pipe (4.1), mud return line (4.2), excess sludge pipe (4.3) and effluent recycling pipe (4.4) for (4);
Sludge digestion liquid raw water box (1) links to each other with denitrification reactor water intaking valve (2.2) through intake pump (2.1); Denitrification reactor rising pipe (2.4) links to each other with self-supported denitrification reactor water intaking valve (3.1); Self-supported denitrification reactor outlet valve (3.11) links to each other with second pond pipe connecting (3.12); The part water outlet is connected with denitrification reactor (2) through effluent recycling pump (6).
2. sludge digestion liquid two-stage biological NRU according to claim 1 is characterized in that said sludge digestion liquid raw water box (1) is a closed box.
3. sludge digestion liquid two-stage biological NRU according to claim 2 is characterized in that, said self-supported denitrification reactor (3) is a uncovered pond body.
4. sludge digestion liquid two-stage biological NRU according to claim 3 is characterized in that the packing ratio of said sponge filler is 10-50%.
5. sludge digestion liquid two-stage biological NRU according to claim 4 is characterized in that, said second pond is a vertical sedimentation basin for (4).
6. sludge digestion liquid two-stage biological NRU according to claim 1 is characterized in that, said denitrification reactor adopts synthetic glass to process.
7. sludge digestion liquid two-stage biological NRU according to claim 1 is characterized in that, said denitrification reactor adopts steel plate or concrete to process.
8. a sludge digestion liquid two-stage biological denitrogenation method is characterized in that, comprising:
To have the municipal wastewater treatment plant active sludge of denitrification activity, add to denitrification reactor;
With short distance nitration mud or municipal wastewater treatment plant active sludge, add to self-supported denitrification reactor;
Add the sponge filler that hangs up properly the Anammox mycoderm in anoxic microbial film district;
The effluent recycling amount is 1:1-1:3 with the ratio of Digestive system flooding quantity, when COD is higher in the denitrification reactor water outlet, increases the effluent recycling amount;
The self-supported denitrification reactor return sludge ratio is controlled between the 30-100%, when mud SVI hangs down, reduces return sludge ratio;
Self-supported denitrification reactor aerobic zone and anoxic microbial film district volume ratio are 1:1-8:1, and the aerobic zone dissolved oxygen concentration is controlled at 0.3-0.8mg/L, anoxic microbial film district nitrous acid oxygen nitrogen concentration>2mg/L, reduce the aerobic zone dissolved oxygen.
9. sludge digestion liquid two-stage biological denitrogenation method according to claim 8 is characterized in that:
The packing ratio of sponge filler is 10-50%.
10. sludge digestion liquid two-stage biological denitrogenation method according to claim 8 is characterized in that:
Said denitrification reactor adopts synthetic glass to process.
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Cited By (8)
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| CN103288213A (en) * | 2013-06-08 | 2013-09-11 | 中国环境科学研究院 | Whole-process autotrophic nitrogen removal method and device |
| CN103435160A (en) * | 2013-08-18 | 2013-12-11 | 北京工业大学 | Continuous flow operation method for prompting continuous flow sewage treatment system to achieve short range nitration quickly |
| CN103523910A (en) * | 2013-09-13 | 2014-01-22 | 杭州师范大学 | Integrated baffle-type autotrophic biological denitrification reactor |
| CN103936150A (en) * | 2014-04-11 | 2014-07-23 | 北京工业大学 | Continuous flow low C/N (carbon/nitrogen ratio) municipal wastewater partial nitrification/ anaerobic ammonia oxidation and denitrification nitrogen removal method |
| CN105036503A (en) * | 2015-07-28 | 2015-11-11 | 同济大学 | In-situ nitrogen removal method used in sludge high-solid anaerobic digestion biogas slurry |
| CN106365373A (en) * | 2015-07-24 | 2017-02-01 | 王玮 | Method and apparatus for treating municipal sludge anaerobic digestion solution |
| CN109626574A (en) * | 2019-01-15 | 2019-04-16 | 青岛大学 | The device and method of two-stage SPNA denitrification process Treating Municipal Sewage |
| CN111807510A (en) * | 2019-04-09 | 2020-10-23 | 大禹环服（北京）科技有限公司 | System for generating electron donor by anaerobic digestion to realize denitrification |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103288213B (en) * | 2013-06-08 | 2015-04-08 | 中国环境科学研究院 | Whole-process autotrophic nitrogen removal method and device |
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| CN103435160B (en) * | 2013-08-18 | 2014-12-03 | 北京工业大学 | Continuous flow operation method for prompting continuous flow sewage treatment system to achieve short range nitration quickly |
| CN103523910A (en) * | 2013-09-13 | 2014-01-22 | 杭州师范大学 | Integrated baffle-type autotrophic biological denitrification reactor |
| CN103523910B (en) * | 2013-09-13 | 2014-12-03 | 杭州师范大学 | Integrated baffle-type autotrophic biological denitrification reactor |
| CN103936150A (en) * | 2014-04-11 | 2014-07-23 | 北京工业大学 | Continuous flow low C/N (carbon/nitrogen ratio) municipal wastewater partial nitrification/ anaerobic ammonia oxidation and denitrification nitrogen removal method |
| CN103936150B (en) * | 2014-04-11 | 2015-10-28 | 北京工业大学 | The low C/N municipal effluent short distance nitration/Anammox+denitrification method of Continuous Flow |
| CN106365373A (en) * | 2015-07-24 | 2017-02-01 | 王玮 | Method and apparatus for treating municipal sludge anaerobic digestion solution |
| CN105036503A (en) * | 2015-07-28 | 2015-11-11 | 同济大学 | In-situ nitrogen removal method used in sludge high-solid anaerobic digestion biogas slurry |
| CN109626574A (en) * | 2019-01-15 | 2019-04-16 | 青岛大学 | The device and method of two-stage SPNA denitrification process Treating Municipal Sewage |
| CN109626574B (en) * | 2019-01-15 | 2021-12-28 | 青岛大学 | Device and method for treating municipal sewage by two-stage SPNA denitrification process |
| CN111807510A (en) * | 2019-04-09 | 2020-10-23 | 大禹环服（北京）科技有限公司 | System for generating electron donor by anaerobic digestion to realize denitrification |
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