CN104402165A - Apparatus and method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation - Google Patents
Apparatus and method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/121—Multistep treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1263—Sequencing batch reactors [SBR]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The invention discloses an apparatus and a method for treating city sewage by coupling inner carbon source denitrification and anaerobic ammonium oxidation. Two SBR reactors are arranged on the apparatus, wherein a SBR phosphate removing reactor is used for removing an organic matter in sewage and synthesizing the inner carbon source, a SBR nitrogen removal reactor uses a short distance denitrification-anaerobic ammoxidation technology to remove most ammonia nitrogen in sewage, by adding residual sludge in the SBR phosphate removing reactor, total nitrogen removal rate of a system can be increased. The apparatus operation method comprises the following steps: 1)inoculating sludge; 2)starting the SBR phosphate removing reactor; 3)starting the SBR nitrogen removal reactor; and 4)operating the system in a stable mode. The apparatus and method are suitable for treating city sewage with low carbon nitrogen ratio; the system can be controlled in a flexible mode, and total nitrogen removal efficiency is high.
Description
Technical field
The invention discloses a kind of efficient biological treatment method based on internal carbon source denitrification coupling Anammox technical finesse municipal effluent, belong to biochemical wastewater treatment field.The present invention is applicable to the process of the municipal effluent of low ratio of carbon to ammonium; Systematical control is flexible, and total nitrogen removal efficiency is high.
Background technology
The construction of municipal sewage plant and operation are the important channels solving water environment pollution problem.By the restriction of environmental bearing capacity and the demand of Ecological Civilization Construction, the effluent quality index of municipal sewage plant is more strict, especially at the responsive ecotope that pollution level is heavier, has all carried out strict restriction to the COD in sewage and ammonia nitrogen.China is in " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) of promulgation in 2002, one-level A standard regulation town sewage plant water outlet ammonia nitrogen < 5mg/L, total nitrogen < 15mg/L, newly-built Sewage Plant total phosphorus < 0.5mg/L.
Urban sewage treatment process, mainly through active sludge alternate run under the environment of anaerobic-aerobic, realizes pollutant removal.In aerobic environment, microorganism carries out nitration reaction and utilizes organism to carry out anti-nitration reaction under organics removal, anoxia condition realizing denitrogenation.The denitrification effect of conventional nitration denitrification technique affects significantly by organic, and under low ratio of carbon to ammonium condition, nitric efficiency is general not high.In the municipal effluent of China, nitrogen and phosphorus thing is removed needs to utilize the organism in water inlet, but this partial organic substances fails efficiency utilization at present, water outlet nitrogen element be difficult to up to standard while, major part carbon source is direct oxidation into carbonic acid gas, fail to enter into the methane phase stage, this causes the power self-support rate of wastewater treatment in China factory general lower.Conventional sewage treatment process is difficult to realize higher energy recovery rate, does not meet the requirement of Sustainable development.
The development appearing as municipal sewage plant of anaerobic ammonia oxidation process provides new thinking.Anaerobic ammonia oxidation process has remarkable difference with conventional nitration denitrification technique, and ammonia nitrogen and nitrite directly can be converted to nitrogen by this technique.And anaerobic ammonia oxidizing bacteria is chemosynthetic autotroph, be electron donor without the need for machine carbon source in denitrification process, the corresponding minimizing of sludge yield.The application of anaerobic ammonia oxidation process changes traditional sewage treatment process, and what realize that carbon removes with nitrogen pollutant is separated.Based on the denitrification process of Anammox technology compared to traditional technology, can aeration energy consumption be saved, not need extra organism as carbon source, there is advantage significantly.
Still there is many bottlenecks in application Anammox technical finesse municipal effluent.Wherein the water outlet total nitrogen of anaerobic ammonia oxidation process is difficult to up to standard is one of them.In the total nitrogen that anaerobic ammonia oxidizing bacteria is removed, except 89% is converted into except nitrogen discharge, also have the total nitrogen of 11% to be converted into nitrate and remain in sewage.This part nitrate additionally generated may cause the raising of water outlet total nitrogen, and under the environment having strict demand to effluent quality, simple Anammox technology will be difficult to realize stable water outlet qualified discharge.Therefore based on the sewage treatment process of Anammox technology, how to cut down the nitrate in water outlet further, improving system nitrogen removal rate is that this technology of application needs one of bottleneck broken through.
Summary of the invention
The present invention is directed to Anammox technical finesse municipal effluent, nitrogen removal rate is difficult to the problem improved further, propose the device and method of a kind of internal carbon source denitrification coupling Anammox Treating Municipal Sewage, utilize dephosphorization process synthetic sludge internal carbon source, and utilize internal carbon source to realize the coupling of short-cut denitrification and Anammox further, improve the nitrogen removal rate of system.First sewage is passed into SBR dephosphorizing reactor by this contrive equipment, the enrichment of polyP bacteria is realized by the alternate run of anaerobic phosphorus release-aerobic suction phosphorus process, and go to realize biological phosphate-eliminating by discharging rich phosphorous sludge, simultaneously the heterotrophic bacterium such as polyP bacteria utilizes the internal carbon sources such as the organic synthesis PHB in water inlet, and internal carbon source stores for future use with the form of excess sludge; Then sewage passes into by SBR denitrification reactor, first under low-oxygen environment, realize short distance nitration-anaerobic ammoxidation reaction, carry out autotrophic denitrification, then the excess sludge of SBR dephosphorizing reactor is added, carry out anoxia stirring, realize the coupling of short-cut denitrification and Anammox, remove the ammonia nitrogen in sewage and nitrate further, the nitrogen removal rate of system is provided.
The object of the invention is to be achieved through the following technical solutions:
The device of internal carbon source denitrification coupling Anammox Treating Municipal Sewage, is characterized in that: the municipal effluent raw water box, SBR dephosphorizing reactor, intermediate water tank, SBR denitrification reactor, the storage basin that are provided with the preliminary sedimentation tank water outlet storing municipal sewage plant; Municipal effluent raw water box is provided with upflow tube and blow-down pipe; Municipal effluent raw water box is connected by the water inlet pipe of intake pump with SBR dephosphorizing reactor; SBR dephosphorizing reactor is provided with speed-adjustable stir device, water discharge valve, mud valve, diaphragm aeration head, air volume regulating valve, gas blower, gas meter; The rising pipe of SBR dephosphorizing reactor is communicated with described intermediate water tank; Intermediate water tank is provided with upflow tube; Intermediate water tank is connected with described SBR denitrification reactor by intake pump; SBR denitrification reactor is provided with speed-adjustable stir device, mud valve, diaphragm aeration head, air volume regulating valve, water discharge valve, gas meter and gas blower; SBR dephosphorizing reactor enters into described storage basin by mud valve and spoil disposal pipeline, and storage basin is provided with supernatant liquor delivery pipe and mud valve, and the sludge pump by arranging bottom storage basin is communicated with SBR denitrification reactor.
The blow-down pipe of described municipal effluent raw water box is provided with Self controlling valve, described speed-adjustable stir device, intake pump, gas blower, sludge pump, supernatant liquor delivery pipe are equipped with autocontrol switch, and described Self controlling valve, autocontrol switch, water discharge valve, mud valve, air volume regulating valve, gas meter are online autocontrol part; Online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter is provided with in described SBR dephosphorizing reactor; Online dissolved oxygen concentration meter and online ammonia nitrogen concentration meter is provided with in described SBR denitrification reactor; Above-mentioned autocontrol part and online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter, and online ammonia nitrogen concentration meter all carries out signal and control linkage with the PLC arranged.
Utilize the device of above-mentioned internal carbon source denitrification coupling Anammox Treating Municipal Sewage to carry out the method for municipal sewage treatment, it is characterized in that there are following steps:
1) seed sludge: SBR dephosphorizing reactor inoculation municipal sewage plant second pond returned sluge, makes sludge concentration in reactor at 5g/L; SBR denitrification reactor inoculates the short distance nitration mud of the high ammonia-nitrogen sewage treatment system discharge of municipal sewage plant's second pond returned sluge and steady running according to volume ratio 1: 1, make sludge concentration at 4.5g/L; And in the high ammonia-nitrogen wastewater anaerobic ammonia oxidation reactor of steady running, get biofilm packing be seeded to SBR denitrification reactor, packing volume accounts for 20% of total reactor volume;
2) SBR dephosphorizing reactor starts: SBR dephosphorization removes reactor start-up mode and is: reactor water inlet when each startup starts, first stirring at low speed 30min after having intake, then open gas blower and carry out aeration, aeration phase is by regulating the dissolved oxygen concentration of aeration control system at 3-5mg/L, close air compressor machine after aeration 90min, system carries out staticly settling 10-30min, and then opening water discharge valve carries out discharge supernatant liquor, draining is than 50%, and the supernatant liquor of discharge enters into intermediate water tank; Open mud valve after draining and carry out mud discharging, the volume of the mud of discharge accounts for 10% of reactor volume, wherein the mud of 5% directly discharges as the excess sludge in reactor, the mud of other 5% enters to storage basin and staticly settles, supernatant liquor directly discharges, and the mud after concentrated gives over to internal carbon source and uses; SBR dephosphorizing reactor completes the operation of one-period after above-mentioned water inlet, stirring, aeration, precipitation, draining, spoil disposal, and now system enters the next cycle of operation, intakes from newly; Monitor the phosphate concn in each cycle water outlet, until phosphate concn in water outlet is stable be less than 0.5mg/L after, system starts successfully, and beginning steady running, carry out step 3 simultaneously);
3) SBR denitrification reactor starts: SBR denitrification reactor Starting mode is: reactor water inlet when each startup starts, to intake rear unlatching gas blower, the valve simultaneously adjusting aerating pipelines carries out low-oxygen aeration, dissolved oxygen in control reactor is at 0.1-0.3mg/L, and open stirrer, mud is more fully suspended at reactor, does not occur short stream and dead band, aeration time is 210min; Then system stops aeration, and staticly settle 15-30min, open water discharging valve after having precipitated, reactor carries out discharge supernatant liquor, and draining is than 50%; Then again bring into operation from water inlet; When the ammonia nitrogen concentration in system water outlet is lower than 10mg/L, SBR denitrification reactor starts successfully; Enter step 4);
4) in the system stable operation stage: the operation scheme of SBR dephosphorizing reactor remains unchanged, its water outlet enters into SBR denitrification reactor through intermediate water tank; SBR denitrification reactor carries out low-oxygen aeration, when intrasystem ammonia nitrogen concentration is lower than 10mg/L, stops aeration; Now SBR denitrification reactor adds from the thickened sludge in the storage basin of SBR dephosphorizing reactor, the sludge quantity added accounts for the 3%-5% of SBR denitrification reactor volume, turn on agitator is uniformly mixed simultaneously, after the nitrate concentration in system is lower than 1mg/L, stirring is stopped to staticly settle, discharge supernatant liquor after precipitation, draining ratio is 50%; Former water after SBR dephosphorizing reactor and the process of SBR denitrification reactor, discharges as final outflow water successively; Now repeat the 4th) step, whole system continues steady running: former water enters into SBR dephosphorizing reactor and processes, and follow-uply enters into the process of SBR denitrification reactor through intermediate pool, thus realizes the continuous process of sewage.
The advantage of the apparatus and method of internal carbon source denitrification coupling Anammox Treating Municipal Sewage of the present invention: first apply Anammox denitride technology, compared with existing traditional biological denitrification process, there is operation energy consumption to reduce, the aeration rate of 60% can be saved, run and control the advantages such as simple; And the present invention is on the basis of Anammox denitrification process, introduces the short-cut denitrification coupling Anammox technology based on internal carbon source, compared with the Anammox technology of routine, also there is advantage significantly:
1) utilize the anaerobic ammonium oxidation process that sludge internal carbon source carries out in short-cut denitrification coupled system, under the condition of not additional carbon, the further raising of system nitrogen removal rate can be realized.Make the emission standard that effluent quality reaches stricter, reduce the difficulty of subsequent regeneration water conservancy project skill, reduce the working cost of integrated artistic.
2) the present invention reduces water outlet total nitrogen by short-cut denitrification with being coupled of Anammox, the ammonia nitrogen concentration of aeration phase can be made to remain on more than 10mg/L, and in system, keep higher ammonia nitrogen concentration to be conducive to the generation avoiding aeration phenomenon, the growth of NOB in suppression system, is conducive to the steady running of anaerobic ammonia oxidation process.
Accompanying drawing explanation
Fig. 1 is the structural representation of this bright device;
Fig. 2 is the Inlet and outlet water pollutent change curve of method Treating Municipal Sewage of the present invention.
Embodiment
The present invention will be described in conjunction with the accompanying drawings and embodiments: embodiment 1: see accompanying drawing, the device of internal carbon source denitrification coupling Anammox Treating Municipal Sewage, is provided with municipal effluent raw water box 1, SBR dephosphorizing reactor 2, intermediate water tank 3, SBR denitrification reactor 4, the storage basin 5 of the preliminary sedimentation tank water outlet storing municipal sewage plant; Municipal effluent raw water box is provided with upflow tube 11 and blow-down pipe 12; Municipal effluent raw water box is connected by the water inlet pipe of intake pump 13 with SBR dephosphorizing reactor; SBR dephosphorizing reactor is provided with speed-adjustable stir device 21, water discharge valve 22, mud valve 23, diaphragm aeration head 24, air volume regulating valve 25, gas blower 26, gas meter 27; The rising pipe of SBR dephosphorizing reactor is communicated with described intermediate water tank; Intermediate water tank is provided with upflow tube 31; Intermediate water tank is connected with described SBR denitrification reactor by intake pump 33; SBR denitrification reactor is provided with speed-adjustable stir device 41, mud valve 42, diaphragm aeration head 43, air volume regulating valve 44, water discharge valve 45, gas meter 46 and gas blower 47; SBR dephosphorizing reactor enters into described storage basin by mud valve 23 and spoil disposal pipeline, and storage basin is provided with supernatant liquor delivery pipe 51 and mud valve 53, and the sludge pump 52 by arranging bottom storage basin is communicated with SBR denitrification reactor.
Embodiment 2: the device of internal carbon source denitrification coupling Anammox Treating Municipal Sewage, the blow-down pipe of described municipal effluent raw water box is provided with Self controlling valve, described speed-adjustable stir device, intake pump, gas blower, sludge pump, supernatant liquor delivery pipe are equipped with autocontrol switch, and described Self controlling valve, autocontrol switch, water discharge valve, mud valve, air volume regulating valve, gas meter are online autocontrol part; Online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter is provided with in described SBR dephosphorizing reactor; Online dissolved oxygen concentration meter and online ammonia nitrogen concentration meter is provided with in described SBR denitrification reactor; Above-mentioned autocontrol part and online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter, and online ammonia nitrogen concentration meter all carries out signal and control linkage with the PLC arranged, other structures are identical with embodiment 1.
Embodiment 3: utilize the device of internal carbon source denitrification coupling Anammox Treating Municipal Sewage to carry out the method for municipal sewage treatment, test adopts certain Primary Settling Tanks of Municipal Wastewater Treatment Plant water outlet as former water, and concrete water quality is as follows: COD concentration is 160-350mg/L; NH
4 +-N concentration is 32.46-55mg/L, NO
2 --N≤0.25mg/L, NO
3 --N≤1mg/L.As shown in Figure 1, each reactor all adopts synthetic glass to make to pilot system, and the effective volume of SBR dephosphorizing reactor and SBR denitrification reactor is 120L.
Concrete operation method step is as follows:
1) seed sludge: SBR dephosphorizing reactor 120L, inoculation municipal sewage plant second pond returned sluge 100L, the sludge concentration recorded in reactor is 4.8g/L; The short distance nitration mud 60L of the high ammonia-nitrogen sewage treatment system discharge of SBR denitrification reactor inoculation municipal sewage plant second pond returned sluge 60L and steady running, records sludge concentration at 4.4g/L; And in the high ammonia-nitrogen wastewater anaerobic ammonia oxidation reactor of steady running, get biofilm packing be seeded to SBR denitrification reactor 120L, the total stacking volume of filler is 24L;
2) SBR dephosphorizing reactor starts: SBR dephosphorization removes reactor start-up mode and is: reactor is intake when often starting beginning, first stirring at low speed 30min after having intake, then open gas blower and carry out aeration, aeration phase is by regulating the dissolved oxygen of aeration control system, record dissolved oxygen concentration at 3.5-5mg/L, air compressor machine is closed after aeration 90min, system carries out staticly settling 20min, then opening water discharge valve carries out draining, volume of displacement is 60L, and the supernatant liquor of discharge enters into intermediate water tank; Open mud valve after draining and carry out mud discharging, the volume of mud of discharge is 12L, and wherein the mud of 6L directly discharges as the excess sludge in reactor, and the mud of 6L enters to storage basin and staticly settles in addition, supernatant liquor directly discharges, and the mud after concentrated gives over to internal carbon source and uses; SBR dephosphorizing reactor completes the operation of one-period after water inlet, stirring, precipitation, draining, spoil disposal, and now system enters the next cycle of operation, intakes from newly; Monitor the phosphate concn in each cycle water outlet, until phosphate concn in water outlet is stable be less than 0.5mg/L after, system starts successfully; Start steady running, and carry out next step;
3) SBR denitrification reactor starts: SBR denitrification reactor Starting mode is: reactor is intake when often starting beginning, to intake rear unlatching gas blower, the valve simultaneously adjusting aerating pipelines carries out low-oxygen aeration, dissolved oxygen in control reactor is at 0.1-0.3mg/L, and open stirrer, mud is more fully suspended at reactor, does not occur short stream and dead band, aeration time is 210min; Then system stops aeration, and staticly settle 20min, open water discharging valve after having precipitated, reactor carries out draining, volume of displacement 60L, and draining is than 50%; Then again bring into operation from water inlet; When the ammonia nitrogen concentration in system water outlet is lower than 10mg/L, SBR denitrification reactor starts successfully; Enter next step;
4) in the system stable operation stage: the operation scheme of SBR dephosphorizing reactor remains unchanged, its water outlet enters into SBR denitrification reactor through intermediate water tank; SBR denitrification reactor carries out low-oxygen aeration, when intrasystem ammonia nitrogen concentration is lower than 10mg/L, stops aeration; Now SBR denitrification reactor adds 6L from the thickened sludge in the storage basin of SBR dephosphorizing reactor, turn on agitator is uniformly mixed simultaneously, after the nitrate concentration in system is lower than 1mg/L, stop stirring staticly settling, discharge supernatant liquor after precipitation, draining ratio is 50%; Former water after SBR dephosphorizing reactor and the process of SBR denitrification reactor, discharges as final outflow water successively; Now whole system enters stable operation, repeating step 4): former water enters into SBR dephosphorizing reactor and processes, and follow-uply enters into the process of SBR denitrification reactor through intermediate pool, thus realizes the continuous process of sewage.
The test-results of above-described embodiment shows, as shown in Figure 2, after stable, and the average ammonia nitrogen concentration 4.8mg/L of SBR denitrification reactor water outlet, water outlet nitrous concentration 0.2mg/L, water outlet nitre nitrogen concentration 0.2mg/L, average water outlet total nitrogen 8.3mg/L.
Claims (3)
1. a device for internal carbon source denitrification coupling Anammox Treating Municipal Sewage, is characterized in that: the municipal effluent raw water box (1), SBR dephosphorizing reactor (2), intermediate water tank (3), SBR denitrification reactor (4), the storage basin (5) that are provided with the preliminary sedimentation tank water outlet storing municipal sewage plant; Municipal effluent raw water box is provided with upflow tube (11) and blow-down pipe (12); Municipal effluent raw water box is connected with the water inlet pipe of SBR dephosphorizing reactor by intake pump (13); SBR dephosphorizing reactor is provided with speed-adjustable stir device (21), water discharge valve (22), mud valve (23), diaphragm aeration head (24), air volume regulating valve (25), gas blower (26), gas meter (27); The rising pipe of SBR dephosphorizing reactor is communicated with described intermediate water tank; Intermediate water tank is provided with upflow tube (31); Intermediate water tank is connected with described SBR denitrification reactor by intake pump (33); SBR denitrification reactor is provided with speed-adjustable stir device (41), mud valve (42), diaphragm aeration head (43), air volume regulating valve (44), water discharge valve (45), gas meter (46) and gas blower (47); SBR dephosphorizing reactor enters into described storage basin by mud valve (23) and spoil disposal pipeline, storage basin is provided with supernatant liquor delivery pipe (51) and mud valve (53), and the sludge pump (52) by arranging bottom storage basin is communicated with SBR denitrification reactor.
2. the device of Treating Municipal Sewage according to claim 1, it is characterized in that: the blow-down pipe of described municipal effluent raw water box is provided with Self controlling valve, described speed-adjustable stir device, intake pump, gas blower, sludge pump, supernatant liquor delivery pipe are equipped with autocontrol switch, and described Self controlling valve, autocontrol switch, water discharge valve, mud valve, air volume regulating valve, gas meter are online autocontrol part; Online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter is provided with in described SBR dephosphorizing reactor; Online dissolved oxygen concentration meter and online ammonia nitrogen concentration meter is provided with in described SBR denitrification reactor; Above-mentioned autocontrol part and online sludge concentration meter, online dissolved oxygen concentration meter, online phosphate concn meter and online nitrate concentration meter, and online ammonia nitrogen concentration meter all carries out signal and control linkage with the PLC arranged.
3. utilize the device of the coupling of the internal carbon source denitrification described in claim 1 or 2 Anammox Treating Municipal Sewage to carry out the method for municipal sewage treatment, it is characterized in that there are following steps:
1) seed sludge: SBR dephosphorizing reactor inoculation municipal sewage plant second pond returned sluge, makes sludge concentration in reactor at 5g/L; SBR denitrification reactor inoculates the short distance nitration mud of the high ammonia-nitrogen sewage treatment system discharge of municipal sewage plant's second pond returned sluge and steady running according to volume ratio 1: 1, make sludge concentration at 4.5g/L; And in the high ammonia-nitrogen wastewater anaerobic ammonia oxidation reactor of steady running, get biofilm packing be seeded to SBR denitrification reactor, packing volume accounts for 20% of total reactor volume;
2) SBR dephosphorizing reactor starts: SBR dephosphorization removes reactor start-up mode and is: reactor water inlet when each startup starts, first stirring at low speed 30min after having intake, then open gas blower and carry out aeration, aeration phase is by regulating the dissolved oxygen concentration of aeration control system at 3-5mg/L, close air compressor machine after aeration 90min, system carries out staticly settling 10-30min, and then opening water discharge valve carries out discharge supernatant liquor, draining is than 50%, and the supernatant liquor of discharge enters into intermediate water tank; Open mud valve after draining and carry out mud discharging, the volume of the mud of discharge accounts for 10% of reactor volume, wherein the mud of 5% directly discharges as the excess sludge in reactor, the mud of other 5% enters to storage basin and staticly settles, supernatant liquor directly discharges, and the mud after concentrated gives over to internal carbon source and uses; SBR dephosphorizing reactor completes the operation of one-period after above-mentioned water inlet, stirring, aeration, precipitation, draining, spoil disposal, and now system enters the next cycle of operation, intakes from newly; Monitor the phosphate concn in each cycle water outlet, until phosphate concn in water outlet is stable be less than 0.5mg/L after, system starts successfully, and beginning steady running, carry out step 3 simultaneously);
3) SBR denitrification reactor starts: SBR denitrification reactor Starting mode is: reactor water inlet when each startup starts, to intake rear unlatching gas blower, the valve simultaneously adjusting aerating pipelines carries out low-oxygen aeration, dissolved oxygen in control reactor is at 0.1-0.3mg/L, and open stirrer, mud is more fully suspended at reactor, does not occur short stream and dead band, aeration time is 210min; Then system stops aeration, and staticly settle 15-30min, open water discharging valve after having precipitated, reactor carries out discharge supernatant liquor, and draining is than 50%; Then again bring into operation from water inlet; When the ammonia nitrogen concentration in system water outlet is lower than 10mg/L, SBR denitrification reactor starts successfully; Enter step 4);
4) in the system stable operation stage: the operation scheme of SBR dephosphorizing reactor remains unchanged, its water outlet enters into SBR denitrification reactor through intermediate water tank; SBR denitrification reactor carries out low-oxygen aeration, when intrasystem ammonia nitrogen concentration is lower than 10mg/L, stops aeration; Now SBR denitrification reactor adds from the thickened sludge in the storage basin of SBR dephosphorizing reactor, the sludge quantity added accounts for the 3%-5% of SBR denitrification reactor volume, turn on agitator is uniformly mixed simultaneously, after the nitrate concentration in system is lower than 1mg/L, stirring is stopped to staticly settle, discharge supernatant liquor after precipitation, draining ratio is 50%; Former water after SBR dephosphorizing reactor and the process of SBR denitrification reactor, discharges as final outflow water successively; Now repeat the 4th) step, whole system continues steady running: former water enters into SBR dephosphorizing reactor and processes, and follow-uply enters into the process of SBR denitrification reactor through intermediate pool, thus realizes the continuous process of sewage.
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| CN105000753A (en) * | 2015-07-08 | 2015-10-28 | 济南大学 | Device and method for recovering nitrogen and phosphorus in sewage and improving biological productivity of microalgae |
| CN105347476A (en) * | 2015-10-31 | 2016-02-24 | 北京工业大学 | Device and method for combination of short-cut denitrification phosphorus removal and anaerobic ammonia oxidation |
| CN105439396A (en) * | 2016-01-11 | 2016-03-30 | 北京城市排水集团有限责任公司 | Biological device for treating municipal sewage and treatment method thereof |
| CN107381813A (en) * | 2017-08-31 | 2017-11-24 | 北京城市排水集团有限责任公司 | The device and method of sludge segment reflux strengthened anaerobic ammoxidation denitrification process |
| CN107434300A (en) * | 2017-08-31 | 2017-12-05 | 北京城市排水集团有限责任公司 | A kind of method of intensive enhanced sewage processing unit and Treating Municipal Sewage |
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| CN110002585A (en) * | 2019-04-18 | 2019-07-12 | 北京工业大学 | Realize city sewage deep denitrogenation short distance nitration Anammox integration postposition anoxic process and device |
| CN110002585B (en) * | 2019-04-18 | 2021-10-26 | 北京工业大学 | Integrated postposition anoxic process and device for realizing advanced denitrification, shortcut nitrification and anaerobic ammonia oxidation of municipal sewage |
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