CN201923926U - Low carbon biological phosphorus removal and autotroph denitrogenation device for municipal sewage - Google Patents

Low carbon biological phosphorus removal and autotroph denitrogenation device for municipal sewage Download PDF

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CN201923926U
CN201923926U CN2011200064804U CN201120006480U CN201923926U CN 201923926 U CN201923926 U CN 201923926U CN 2011200064804 U CN2011200064804 U CN 2011200064804U CN 201120006480 U CN201120006480 U CN 201120006480U CN 201923926 U CN201923926 U CN 201923926U
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reactor
water tank
pond
phosphorus removal
autotroph
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彭永臻
马斌
王淑莹
王俊敏
张树军
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彭永臻
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Abstract

The utility model discloses a low carbon biological phosphorus removal and autotroph denitrogenation device for municipal sewage, which comprises a raw water tank, a biological phosphorus removal and half short-cut nitrification reactor, a secondary sedimentation tank, a middle water tank and an anaerobic ammonia oxidation reactor, wherein, the biological phosphorus removal and half short-cut nitrification reactor is a UCT (University of Cape Town) reactor that does not contain digestive juice internal reflux; the secondary sedimentation tank is a radical-flow sedimentation basin; and the anaerobic ammonia oxidation reactor is a UASB (Upflow Anaerobic Sludge Blanket) reactor. The low carbon biological phosphorus removal and autotroph denitrogenation device adopts a method as follows: municipal sewage enters an anaerobic zone of the biological phosphorus removal and half short-cut nitrification reactor for phosphorus release action, enters an anoxic zone for denitrification phosphorus release action, and enters an aerobic zone for aerobic phosphorus release and half short-cut nitrification action; and mixed liquor containing ammonia nitrogen and nitrite nitrogen is processed in the secondary sedimentation tank through mud-water separation, and then enters the anaerobic ammonia oxidation UASB reactor, and the purpose of autotroph denitrogenation can be achieved through the anaerobic ammonia oxidation action. By adopting the method, the low carbon biological phosphorus removal and autotroph denitrogenation device can reduce the process aeration amount, and can reduce energy consumption; in addition, silicon sources can be saved, and the low carbon biological phosphorus removal and autotroph denitrogenation device is suitable for treating low carbon sewage.

Description

Low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism device
Technical field
The utility model relates to a kind of dirty water living creature processing technique, specifically is by polyP bacteria the phosphorus in the sewage to be removed, and by short distance nitration+Anammox technology the ammonia nitrogen in the sewage is converted into nitrogen, thereby reaches the purpose of denitrification of autotrophic organism.
Background technology
Existing municipal wastewater treatment plant all is to utilize the traditional biological denitrification dephosphorization technique, carbon source there is certain demand, because anaerobic phosphorus release process need organic carbon source, the denitrification denitrogenation process also needs organic carbon source, but the municipal effluent that has but is low-carbon (LC) water quality, and promptly contained organic carbon source can not satisfy the demand of traditional biological denitrogenation dephosphorizing.Country is in order to control body eutrophication, improve constantly the sewerage nitrogen and phosphor emission standard, this just causes some water factory for qualified discharge, have to add outer carbon source, as industrial spirit etc., when improving water factory's working cost, also increased sludge yield, increase the generation of carbonic acid gas in the treating processes, do not met the aim of low-carbon economy, recycling economy.
The appearance of short distance nitration+Anammox technology makes biological denitrificaion need not organic carbon source, be fit to the processing of low-carbon (LC) high ammonia-nitrogen wastewater, and the appearance of engineering example is being arranged aspect the processing of sludge digestion liquid, but do not seeing of the application of this technology so far at municipal wastewater treatment plant.Short distance nitration+Anammox technology then can reduce the energy consumption that sewage work's aeration is consumed if can arriving in municipal sewage treatment use, and reduces the required expense of sludge treatment, reduces the discharging of the greenhouse gases in the sewage treatment process.
The utility model content
The purpose of this utility model is exactly the device that proposes a kind of low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism.
The technical solution of the utility model is: the device of a kind of low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism is provided, has been provided with former water tank 1, biological phosphate-eliminating half short distance nitration reactor 2, second pond 3, intermediate water tank 4 and Anammox UASB reactor 5; Described raw water box 1 is a uncovered casing, is provided with upflow tube 1.1 and blow-down pipe 1.2; Raw water box 1 is connected with water intaking valve 2.2 by intake pump 2.1;
Described biological phosphate-eliminating half short distance nitration reactor 2 is a uncovered pond body, be divided into several lattice chambers, connect each lattice chamber according to the water (flow) direction flowing hole that is crisscross arranged up and down, front end is anaerobic zone lattice chambers, be provided with agitator 2.8, follow, also be provided with agitator 2.7 by lattice chamber, oxygen-starved area, be aerobic zone lattice chambers at last, its bottom is provided with aeration head 2.5; Air compressor machine 2.10 is connected by gas meter 2.9, air volume regulating valve 2.6 and the aeration head 2.5 that is located at reactor bottom; Lattice chamber, oxygen-starved area is connected with water intaking valve 2.2 by internal reflux pump 2.3; Lattice chamber, oxygen-starved area is connected with second pond mud reverse flow valve 3.1 by sludge reflux pump 2.4; Biological phosphate-eliminating half short distance nitration reactor 2 is connected with municipal effluent second pond 3 by second pond pipe connecting 3.3;
Described second pond 3 is the radical sedimentation basin of middle water inlet, is connected with intermediate water tank 4 by second pond rising pipe 3.4;
Described intermediate water tank 4 is a uncovered casing, is provided with intermediate water tank upflow tube 4.1 and intermediate water tank blow-down pipe 4.2; Intermediate water tank 4 is connected with UASB reactor water intaking valve 5.2 by UASB reactor intake pump 5.1;
Described anaerobic ammonia oxidation reactor 5 is a UASB reactor, the bottom is provided with UASB reactor water intaking valve 5.2 and UASB reactor mud valve 5.3, equidistantly set gradually several UASB reactor sampling valves 5.4 from the bottom up, top is provided with triphase separator 5.5, UASB reactor rising pipe 5.6 and the UASB reactor pipe valve 5.7 of giving vent to anger.
Utilize the low-carbon (LC) municipal effluent biological phosphate-eliminating that the utility model provides and the method for denitrification of autotrophic organism device Treating Municipal Sewage, may further comprise the steps:
1) active sludge that will take from urban sewage plant aeration tank is added to biological phosphate-eliminating half short distance nitration reactor 2 and second pond 3, and making activated sludge concentration MLSS behind the seed sludge is 3000-4000mg/L; Municipal effluent is added raw water box 1, start intake pump 2.1, enter biological phosphate-eliminating half short distance nitration reactor 2 by water intaking valve 2.2; Start anaerobic zone agitator 2.8, oxygen-starved area agitator 2.7, air compressor machine 2.10, regulate air volume regulating valve 2.6 and make that aerobic zone dissolved oxygen DO is 0.3-0.8mg/L; Start sludge reflux pump 2.4 and internal reflux pump 2.3, return sludge ratio is 50%-100%, and internal reflux ratio is 100%-300%;
2) anaerobic ammonium oxidation granular sludge that will have an excellent activity adds to anaerobic ammonia oxidation reactor 5, and the seed sludge amount accounts for the 1/4-1/3 of anaerobic ammonia oxidation reactor 5 cumulative volumes; Hydraulic detention time HRT is 0.1-3h;
3) biological phosphate-eliminating half short distance nitration reactor 2 sludge age SRT are controlled to be 6-15d; The anaerobic zone hydraulic detention time is 0.5-1.5h, and the oxygen-starved area hydraulic detention time is 0.5-1.5h, and the aerobic zone hydraulic detention time is 1-3h;
4) by adjusting the DO (in the 0.3-0.8mg/L scope) of biological phosphate-eliminating half short distance nitration reactor 2 aerobic zones, make the aerobic zone water outlet Be 1.2-1.4; When The time, reduce DO by reducing aeration rate, when The time, increase aeration rate and improve DO;
Know-why:
The low-carbon (LC) municipal effluent enters biological phosphate-eliminating half short distance nitration reactor anaerobic zone generation anaerobic phosphorus release effect, then entering the oxygen-starved area utilizes the nitrite nitrogen in the returned sluge to carry out anoxic suction phosphorus, enter aerobic zone subsequently aerobic suction phosphorus and short distance nitration take place, by adjusting dissolved oxygen concentration control water outlet Be 1.2-1.4, then enter Anammox UASB reactor, the Anammox effect takes place ammonia nitrogen and nitrite nitrogen are converted into nitrogen.The key of technology be by control dissolved oxygen concentration be 0.3-0.8mg/L, while is in conjunction with the control of sludge age SRT, realize the rate of rise of the rate of rise of ammonia oxidation bacteria (AOB), thereby realize NOB is eluriated, realize stable short distance nitration greater than nitrite nitrogen oxidation bacterium (NOB).
The utility model low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism device are with existing A 2The O biological denitrification phosphorous removal technique is compared has following advantage:
1) half short distance nitration promptly only has the part ammonia nitrogen to be converted into nitrite nitrogen, saves at short distance nitration on the basis of aeration rate, further saves aeration rate, thereby reduces more energy consumption;
2) Anammox replaces denitrification, and anaerobic ammonia oxidizing bacteria to be autotrophic bacteria need not organic carbon source, therefore can save adding of outer carbon source, reduce working cost, the while can also reduce discharge of carbon dioxide greenhouse gas;
3) anaerobic ammonia oxidizing bacteria is an autotrophic bacteria, and multiplication rate is slow, and therefore sludge output is few, and then has reduced the sludge disposal expense;
4) anaerobic ammonia oxidizing bacteria is compared with denitrifying bacteria, and it is higher that attainable TN removes volumetric loading, can reduce floor space significantly;
5) mud is back to the oxygen-starved area, make the nitrite nitrogen that carries in the mud be utilized by the denitrification phosphorus-collecting bacterium, the growth of intensified anti-nitrated polyP bacteria, thus the influence of nitrite reduced to anaerobic phosphorus release and aerobic suction phosphorus, help improving the stability of biological phosphate-eliminating.
Description of drawings
Fig. 1 is the structural representation of the utility model low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism device.
Among the figure, 1 is former water tank; 2 is biological phosphate-eliminating half short distance nitration reactor; 3 is second pond; 4 is intermediate water tank; 5 is Anammox UASB reactor; 1.1 be former water tank upflow tube; 1.2 be former water tank blow-down pipe; 2.1 be intake pump; 2.2 be water intaking valve; 2.3 be the internal reflux pump; 2.4 be sludge reflux pump; 2.5 be aeration head; 2.6 be air volume regulating valve; 2.7 be the oxygen-starved area agitator; 2.8 be the anaerobic zone agitator; 2.9 be gas meter; 2.10 be air compressor machine; 3.1 be second pond mud reverse flow valve; 3.2 be the excess sludge discharge valve; 3.3 be the second pond pipe connecting; 3.4 be the second pond rising pipe; 3.5 be biological phosphate-eliminating half short distance nitration reactor outlet valve; 4.1 be the intermediate water tank upflow tube; 4.2 be the intermediate water tank blow-down pipe; 5.1 be UASB reactor intake pump; 5.2 be UASB reactor water intaking valve; 5.3 be UASB reactor mud valve; 5.4 be UASB reactor sampling valve; 5.5 be triphase separator; 5.6 be UASB reactor rising pipe; 5.7 be the UASB reactor pipe valve of giving vent to anger.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further: as shown in Figure 1, low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism device are provided with former water tank 1, biological phosphate-eliminating half short distance nitration reactor 2, second pond 3, intermediate water tank 4 and Anammox UASB reactor 5; Described raw water box 1 is a uncovered casing, is provided with upflow tube 1.1 and blow-down pipe 1.2; Raw water box 1 is connected with water intaking valve 2.2 by intake pump 2.1;
Described biological phosphate-eliminating half short distance nitration reactor 2 is a uncovered pond body, be divided into several lattice chambers, connect each lattice chamber according to the water (flow) direction flowing hole that is crisscross arranged up and down, front end is anaerobic zone lattice chambers, be provided with agitator 2.8, follow, also be provided with agitator 2.7 by lattice chamber, oxygen-starved area, be aerobic zone lattice chambers at last, its bottom is provided with aeration head 2.5; Air compressor machine 2.10 is connected by gas meter 2.9, air volume regulating valve 2.6 and the aeration head 2.5 that is located at reactor bottom; Lattice chamber, oxygen-starved area is connected with water intaking valve 2.2 by internal reflux pump 2.3; Lattice chamber, oxygen-starved area is connected with second pond mud reverse flow valve 3.1 by sludge reflux pump 2.4; Biological phosphate-eliminating half short distance nitration reactor 2 is connected with municipal effluent second pond 3 by second pond pipe connecting 3.3;
Described second pond 3 is the radical sedimentation basin of middle water inlet, is connected with intermediate water tank 4 by rising pipe 3.4;
Described intermediate water tank 4 is a uncovered casing, is provided with upflow tube 4.1 and blow-down pipe 4.2; Intermediate water tank 4 is connected with anaerobic ammonia oxidation reactor water intaking valve 5.2 by UASB intake pump 5.1;
Described anaerobic ammonia oxidation reactor 5 is a UASB reactor, and the bottom is provided with mud return line valve 5.2 and spoil disposal pipe valve 5.3, equidistantly sets gradually several sampling valves 5.4 from the bottom up, and top is provided with triphase separator 5.5, rising pipe 5.6 and gives vent to anger pipe valve 5.7;
Concrete test water is taken from the municipal wastewater treatment plant preliminary sedimentation tank water outlet of Gaobeidian City, Beijing, and concrete water-quality guideline is as follows: COD is 112-205mg/L, Be 45-62mg/L, SS is 60-138mg/L; TP is 3.5-8.0mg/L; Basicity is 250-400mg/L; PH is 7.00-7.60.Pilot system as shown in Figure 1, biological phosphate-eliminating half short distance nitration reactor useful volume is 25L, reactor size is L * B * H=50 * 10 * 60cm, is equally divided into 5 lattice chambers, lattice interventricular septum plate is connected by staggered up and down aperture.
Concrete operation is as follows:
1) active sludge that will take from urban sewage plant aeration tank is added to biological phosphate-eliminating half short distance nitration reactor 2 and second pond 3, and making activated sludge concentration MLSS behind the seed sludge is 3000-4000mg/L; Municipal effluent is added raw water box 1, start intake pump 2.1, enter biological phosphate-eliminating half short distance nitration reactor 2 by water intaking valve 2.2; Start anaerobic zone agitator 2.8, oxygen-starved area agitator 2.7, air compressor machine 2.10, regulate air volume regulating valve 2.6 and make that aerobic zone dissolved oxygen DO is 0.3-0.8mg/L; Start sludge reflux pump 2.4 and internal reflux pump 2.3, return sludge ratio is 50%-100%, and internal reflux ratio is 100%-300%;
2) anaerobic ammonium oxidation granular sludge that will have an excellent activity adds to anaerobic ammonia oxidation reactor 5, and the seed sludge amount accounts for the 1/4-1/3 of anaerobic ammonia oxidation reactor 5 cumulative volumes; Hydraulic detention time HRT is 0.1-3h;
3) biological phosphate-eliminating half short distance nitration reactor 2 sludge age SRT are controlled to be 6-15d; The anaerobic zone hydraulic detention time is 0.5-1.5h, and the oxygen-starved area hydraulic detention time is 0.5-1.5h, and the aerobic zone hydraulic detention time is 1-3h;
4) by adjusting the DO (in the 0.3-0.8mg/L scope) of biological phosphate-eliminating half short distance nitration reactor 2 aerobic zones, make the aerobic zone water outlet Be 1.2-1.4; When The time, reduce DO by reducing aeration rate, when The time, increase aeration rate and improve DO;
Test-results shows: after system is stable, and biological phosphate-eliminating half short distance nitration reactor water outlet COD<35mg/L, Be 1.2-1.4, TP<1mg/L, the nitrite accumulation rate is greater than 75%; Anaerobic ammonia oxidation reactor water outlet TN is 8-14mg/L.

Claims (1)

1. the device of low-carbon (LC) municipal effluent biological phosphate-eliminating and denitrification of autotrophic organism is characterized in that: be provided with former water tank (1), biological phosphate-eliminating half short distance nitration reactor (2), second pond (3), intermediate water tank (4) and Anammox UASB reactor (5); Described raw water box (1) is a uncovered casing, is provided with upflow tube (1.1) and blow-down pipe (1.2); Raw water box (1) is connected with water intaking valve (2.2) by intake pump (2.1);
Described biological phosphate-eliminating half short distance nitration reactor (2) is a uncovered pond body, be divided into several lattice chambers, connect each lattice chamber according to the water (flow) direction flowing hole that is crisscross arranged up and down, front end is anaerobic zone lattice chambers, be provided with agitator (2.8), follow, also be provided with agitator (2.7) by lattice chamber, oxygen-starved area, be aerobic zone lattice chambers at last, its bottom is provided with aeration head (2.5); Air compressor machine (2.10) is connected with the aeration head that is located at reactor bottom (2.5) by gas meter (2.9), air volume regulating valve (2.6); Lattice chamber, oxygen-starved area is connected with water intaking valve (2.2) by internal reflux pump (2.3); Lattice chamber, oxygen-starved area is connected with second pond mud reverse flow valve (3.1) by sludge reflux pump (2.4); Biological phosphate-eliminating half short distance nitration reactor (2) is connected with municipal effluent second pond (3) by second pond pipe connecting (3.3);
Described second pond (3) is the radical sedimentation basin of middle water inlet, is connected with intermediate water tank (4) by second pond rising pipe (3.4);
Described intermediate water tank (4) is a uncovered casing, is provided with intermediate water tank upflow tube (4.1) and intermediate water tank blow-down pipe (4.2); Intermediate water tank (4) is connected with UASB reactor water intaking valve (5.2) by UASB reactor intake pump (5.1);
Described anaerobic ammonia oxidation reactor (5) is a UASB reactor, the bottom is provided with UASB reactor water intaking valve (5.2) and UASB reactor mud valve (5.3), equidistantly set gradually several UASB reactor sampling valves (5.4) from the bottom up, top is provided with triphase separator (5.5), UASB reactor rising pipe (5.6) and the UASB reactor pipe valve (5.7) of giving vent to anger.
CN2011200064804U 2011-01-11 2011-01-11 Low carbon biological phosphorus removal and autotroph denitrogenation device for municipal sewage Expired - Lifetime CN201923926U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101746A (en) * 2011-01-11 2011-06-22 彭永臻 Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method
CN102557360A (en) * 2012-03-02 2012-07-11 北京工业大学 Enhanced sewage denitrification and dephosphorization system exploiting and utilizing carbon source in sludge in situ and enhanced sewage denitrification and dephosphorization method exploiting and utilizing carbon source in sludge in situ
CN102583883A (en) * 2012-02-16 2012-07-18 北京工业大学 Technology and method for treating urban sewage by sectional parallel anaerobic ammonia oxidation
CN104098227A (en) * 2014-07-15 2014-10-15 江南大学 Method for treating kitchen anaerobic waste water through short-cut nitrification and denitrification
CN105541021A (en) * 2015-12-29 2016-05-04 哈尔滨工业大学 Quick starting method of anaerobic-ammoxidation-based continuous-flow improved UCT autotrophic denitrification/dephosphorization technique
CN108264201A (en) * 2018-03-28 2018-07-10 北京交通大学 A kind of low C/N sewage treatment process method of synchronous denitrification dephosphorizing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102101746A (en) * 2011-01-11 2011-06-22 彭永臻 Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method
CN102101746B (en) * 2011-01-11 2012-10-17 彭永臻 Low-carbon urban sewage biological phosphorus removal and autotrophic biological nitrogen removal device and method
CN102583883A (en) * 2012-02-16 2012-07-18 北京工业大学 Technology and method for treating urban sewage by sectional parallel anaerobic ammonia oxidation
CN102557360A (en) * 2012-03-02 2012-07-11 北京工业大学 Enhanced sewage denitrification and dephosphorization system exploiting and utilizing carbon source in sludge in situ and enhanced sewage denitrification and dephosphorization method exploiting and utilizing carbon source in sludge in situ
CN104098227A (en) * 2014-07-15 2014-10-15 江南大学 Method for treating kitchen anaerobic waste water through short-cut nitrification and denitrification
CN104098227B (en) * 2014-07-15 2016-01-20 江南大学 A kind of method utilizing short-cut nitrification and denitrification process meal kitchen waste water fermentation
CN105541021A (en) * 2015-12-29 2016-05-04 哈尔滨工业大学 Quick starting method of anaerobic-ammoxidation-based continuous-flow improved UCT autotrophic denitrification/dephosphorization technique
CN108264201A (en) * 2018-03-28 2018-07-10 北京交通大学 A kind of low C/N sewage treatment process method of synchronous denitrification dephosphorizing
CN108264201B (en) * 2018-03-28 2020-07-21 北京交通大学 Low C/N sewage treatment process method for synchronously removing nitrogen and phosphorus

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