CN101580329B - Device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and method - Google Patents
Device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and method Download PDFInfo
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- CN101580329B CN101580329B CN2009100876236A CN200910087623A CN101580329B CN 101580329 B CN101580329 B CN 101580329B CN 2009100876236 A CN2009100876236 A CN 2009100876236A CN 200910087623 A CN200910087623 A CN 200910087623A CN 101580329 B CN101580329 B CN 101580329B
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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
- C02F3/308—Biological phosphorus removal
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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
- C02F3/28—Anaerobic digestion 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
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Abstract
The invention relates to a device for anaerobic removal of organic matters in municipal sewage and denitrification of autotrophic organism and a method. The device is provided with an original water tank, an anaerobic reactor, a dephosphorization reactor, an intermediate sedimentation tank, a semi-short distance nitration reactor, a secondary sedimentation tank, an intermediate water tank and an anaerobic ammonium oxidation reactor; wherein, the anaerobic reactor is an anaerobic biological filter filled with sponge fillers; a first grid chamber of the dephosphorization reactor is an anaerobicarea, and the other four grid chambers are aerobic areas; the semi-short distance nitration reactor is provided with one anoxic area and four aerobic areas; the anaerobic ammonium oxidation reactor isprovided with a columnar reactant and a water bath sleeve. The method utilizing the device comprises: 1) activated sludge obtained from a sewage treatment plant is put into the dephosphorization reactor and the semi-short distance nitration reactor; 2) the municipal sewage is firstly pumped into the anaerobic reactor; 3) the water output by the anaerobic reactor enters the dephosphorization reactor; 4) the water output by the dephosphorization reactor enters the semi-short distance nitration reactor through the intermediate sedimentation tank. The invention is applicable to municipal sewage treatment, and has the advantages of complete structure, advanced technique and high efficiency.
Description
Technical field
The present invention relates to a kind of biochemical process dirty water living creature processing technique, specifically is to produce urban sewage treating device and the method that methane is removed organism and denitrification of autotrophic organism by anaerobism, is applicable to municipal effluent second-stage treatment and regeneration.
Background technology
The water of China pollutes constantly aggravation, and shortage of water resources has restricted the development of economic society, thereby, improving constantly the emission standard of municipal wastewater treatment plant, the regeneration of sewage becomes trend of the times.(COD) oxidation of the organism of traditional biologic process for treating sewage and ammonia nitrogen are nitrated because of needs aeration consumed energy, have lost a large amount of chemical energy in the process of oxidation COD, and cause a large amount of CO
2Be discharged into atmosphere.Simultaneously, denitrification and biological phosphate-eliminating also are the difficult problems that traditional technology can't be avoided to the demand contradictory of COD and a large amount of generations of excess sludge.
In the face of the water outlet emission standard of increasingly stringent, if still with traditional technology reply problem, sewage work will consume more energy and organic carbon source, discharges more CO simultaneously
2, and produce a large amount of excess sludges.In the face of the influence that water pollutes and Greenhouse effect cause human society that is on the rise, the problem of sewage disposal must be with a kind of entire environment of taking into account, and efficient mode is solved, and the Sustainable development of water is the development in future direction.
The anaerobism of sewage and mud is produced methane reaction when removing organic cod, has reclaimed methane gas.The recycling of methane has reduced CO because of saving ore fuel
2Discharging.And the excess sludge that produces in the anaerobism product methane reaction process only is to support about 10% of activated sludge process.
Anaerobic ammonium oxidizing bacteria can produce " short distance " phenomenon in nitrogen cycle, they are with nitrite nitrogen (NO
2 -) be that electron acceptor(EA) is directly with ammonia nitrogen (NH
4 +) be oxidized to nitrogen, i.e. denitrification of autotrophic organism, thus thoroughly changed NH in traditional nitrogen cycle
4 +Have only by nitrated-denitrification approach and could be changed into N
2Process, change simultaneously thoroughly need save energy and reach more than 65% by adding the classical pathway that electron donor (carbon source) could denitrogenation in the past, it is minimum also excess sludge production to be reduced to, thereby saves a large amount of sludge disposal expenses, CO
2Quantity discharged also reduces significantly.
The characteristics of producing methane, denitrification of autotrophic organism at the present situation of municipal sewage treatment and anaerobism, remove the municipal effluent organism if can produce methane reaction by anaerobism, then by the nitrogen in the denitrification of autotrophic organism removal sewage, just can realize the efficient processing of municipal effluent, reduce excess sludge and CO simultaneously significantly
2Discharging up to now, does not worldwide still have to realize the biological process for treating life sewage in urban area of above-mentioned target.
Summary of the invention
The objective of the invention is to propose a kind of urban sewage treating device and method of producing methane removal organism and denitrification of autotrophic organism by anaerobism.
Anaerobism is produced the urban sewage treating device that methane is removed organism and denitrification of autotrophic organism, it is characterized in that: be provided with raw water box, anaerobic reactor, dephosphorizing reactor, medium sediment pool, half short distance nitration reactor, second pond, intermediate pool, anaerobic ammonia oxidation reactor; Anaerobic reactor is for loading the anaerobic biofilter of sponge filler, top is provided with triphase separator, raw water box is communicated with the bottom of anaerobic reactor by going out water pump and water pipe, anaerobic reactor is communicated with by the bottom of rising pipe with the anaerobic zone of dephosphorizing reactor, anaerobic reactor goes out on also being provided with down, and carries out the water pipe and the recycle pump of water cycle;
Dephosphorizing reactor is equally divided into 5 lattice chambers in the longitudinal direction, and lattice chamber the 1st is an anaerobic zone, is provided with the speed governing agitator, and remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump is connected by gas meter, air volume regulating valve and the aeration head that is located at reactor bottom, and dephosphorizing reactor connects the pipe core of medium sediment pool by rising pipe, and medium sediment pool is connected with the anaerobic zone of dephosphorizing reactor by the sludge reflux pump of dephosphorizing reactor; The rising pipe of medium sediment pool is connected with the oxygen-starved area of half short distance nitration reactor.
Half short distance nitration reactor is equally divided into 5 lattice chambers in the longitudinal direction, each lattice chamber filling sponge filler, filling ratio is 30% of a pond appearance, lattice chamber the 1st is the oxygen-starved area, be provided with the speed governing agitator, remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump is by gas meter, air volume regulating valve and be located at the boring aeration pipe coupling of reactor bottom, half short distance nitration reactor is by the pipe core of rising pipe connection second pond, and second pond is connected with the oxygen-starved area of half short distance nitration reactor by the sludge reflux pump of half short distance nitration reactor; The rising pipe of second pond is connected with intermediate pool.
Be provided with the column reactant in the middle of the anaerobic ammonia oxidation reactor, this reactant upper end is provided with triphase separator, the separator top is provided with the rising pipe that is used for draining, separator top is communicated with the reactant bottom by the effluent recycling pump, the reactant periphery is provided with water bath sleeve, water bath sleeve is provided with water-bath recycle pump and the perforation water absorption tube that carries out water cycle, also is provided with electric heater and temperature regulator in the water bath sleeve; Sampling valve on the reactant is arranged on the water bath sleeve outer wall; Intermediate pool is communicated with the reactant bottom of anaerobic ammonia oxidation reactor by the intake pump of anaerobic ammonia oxidation reactor.
The present invention also provides a kind of method of utilizing said apparatus by anaerobism removal organism and denitrification of autotrophic organism Treating Municipal Sewage, and its feature may further comprise the steps:
1) active sludge with denitrogenation dephosphorizing function that will obtain from the municipal sewage plant is added to dephosphorizing reactor and half short distance nitration reactor, and postvaccinal sludge concentration MLSS is respectively about 3000mg/l and 4000mg/l; To be added to the anaerobic reactor from the digested sludge that the municipal sewage sludge anaerobic digester is obtained, the sludge concentration MLSS after adding is about 8000mg/l.The Anammox mud that activity is good is added to anaerobic ammonia oxidation reactor, and the sludge concentration MLSS after adding is 6000mg/l; The sponge filler is added in anaerobic reactor and the half short distance nitration reactor simultaneously, filling ratio is respectively 70% and 30%;
2) municipal effluent at first is pumped in the anaerobic reactor, operating temperature maintains 20～30 ℃, the hydraulic detention time HRT of anaerobic reactor is 2～4 hours, by in above-mentioned scope, adjusting hydraulic detention time, guarantee that the COD of water outlet of anaerobic reactor and the ratio of total phosphorus TP are 15～20/l, when COD/TP＜15, suitably shorten hydraulic detention time, when COD/TP＞20, the proper extension hydraulic detention time;
3) the anaerobic reactor water outlet enters into dephosphorizing reactor, the hydraulic detention time HRT of the anaerobic zone of dephosphorizing reactor and aerobic zone was respectively 1～2 hour and 2～3 hours, the dissolved oxygen DO concentration of aerobic zone is controlled at 2～3mg/l, dephosphorizing reactor water outlet Tp＜1mg/l;
4) water outlet of dephosphorizing reactor enters into half short distance nitration reactor by medium sediment pool, the oxygen-starved area of half short distance nitration reactor and the HRT of aerobic zone were respectively 1～2 hour and 3～5 hours, the dissolved oxygen DO of aerobic zone maintains 0.3～0.6mg/l by adjusting aeration rate, return sludge ratio maintains 25%～75%, make the nitrated rate of aerobic zone maintain about 50% by adjusting flooding velocity, mixeding liquid temperature maintains more than 20 ℃ in the reactor simultaneously, by jointly controlling of above-mentioned HRT, DO concentration, nitrated rate, temperature, realize 90% left and right sides nitrite nitrogen NO
2 -The half short distance nitration reaction of-N cumulative percentage;
5) half short distance nitration reactor water outlet enters into anaerobic ammonia oxidation reactor by intermediate pool, and the operating temperature of reactor is 25～30 ℃, and hydraulic detention time HRT is 2～4 hours.
Know-why: municipal effluent is at first finished the removal of partial organic substances in anaerobic reactor, reclaim bioenergy methane simultaneously, the anaerobic reactor water outlet enters into dephosphorizing reactor, under anaerobism and aerobic alternative condition, utilizes the organism in the anaerobism water outlet to finish biological phosphate-eliminating.Finish the anaerobic reactor water outlet of biological phosphate-eliminating, biodegradable organic content is very low, enters into half short distance nitration of finishing ammonia nitrogen behind the half short distance nitration reactor, half short distance nitration reactor water outlet NH
4 +-N and NO
2 -The ratio of-N substantially about 1: 1, enter into reactor after, finish NH
4 +-N and NO
2 -The Anammox reaction of-N, the whole process autotrophic denitrification of realization municipal effluent.
In above-mentioned municipal effluent biological treatment system, organism is mainly used in and produces methane and biological phosphate-eliminating, has reclaimed the energy, has reduced CO
2Discharging, then in half short distance nitration reactor and follow-up Anammox reactor, finish half short distance nitration and Anammox reaction coupled denitrification of autotrophic organism, saved aeration rate 65% or more and 100% denitrifying carbon source, the excess sludge generation minimizing of total system is more than 60%.
The method for the treatment of city waste water that passes through anaerobism product methane removal organism and denitrification of autotrophic organism that the present invention relates to compared with prior art has following advantage:
1) remove most of organism in the sewage by anaerobic reactor, reclaim the methane energy, traditional technology is by aeration aerobic degradation organism, and " to consume energy ", generation simultaneously is difficult to the residue biological sludge handled in a large number, discharges a large amount of CO
2
2) since in the anaerobic reactor water outlet remaining organism be mainly used in biological phosphate-eliminating, influent carbon source on biological phosphorus removal is abundant, can realize the high-performance bio dephosphorization, for the final recovery of phosphorus creates conditions.
3) by denitrification of autotrophic organism, realized that the efficient low-consume of nitrogen is removed in the sewage, with traditional technology relatively, saved aeration rate 65% or more and 100% denitrifying carbon source, the excess sludge generation minimizing of total system is more than 60%.
4) this technology has embodied minimum COD oxidation, minimum CO
2Discharging, minimum excess sludge produce, receive together to greatest extent the continuable municipal effluent biological treatment theory of the energy.
Description of drawings
Fig. 1 is the structural representation of device of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples: embodiment 1:
Anaerobism is produced the urban sewage treating device that methane is removed organism and denitrification of autotrophic organism, is provided with raw water box 1, anaerobic reactor 2, dephosphorizing reactor 3, medium sediment pool 4, half short distance nitration reactor 5, second pond 6, intermediate pool 7, anaerobic ammonia oxidation reactor 8; Anaerobic reactor is for loading the anaerobic biofilter of sponge filler 2.1, top is provided with triphase separator 2.3, raw water box is communicated with the bottom of anaerobic reactor by going out water pump 2.8 and water pipe, anaerobic reactor is communicated with the bottom of the anaerobic zone 3.7 of dephosphorizing reactor by rising pipe 2.9, anaerobic reactor goes out on also being provided with down, and carries out the water pipe and the recycle pump 2.5 of water cycle;
Dephosphorizing reactor is equally divided into 5 lattice chambers in the longitudinal direction, and lattice chamber the 1st is an anaerobic zone 3.7, is provided with speed governing agitator 3.1, and remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump 3.9 is connected by gas meter 3.8, air volume regulating valve 3.2 and the aeration head 3.6 that is located at reactor bottom, dephosphorizing reactor is by the pipe core 4.1 of rising pipe 3.4 connection medium sediment pools, and medium sediment pool is connected with the anaerobic zone of dephosphorizing reactor by the sludge reflux pump 3.5 of dephosphorizing reactor; The rising pipe 4.2 of medium sediment pool is connected with the oxygen-starved area 5.9 of half short distance nitration reactor 5.
Half short distance nitration reactor is equally divided into 5 lattice chambers in the longitudinal direction, each lattice chamber filling sponge filler 5.3, filling ratio is a spatial 30%, lattice chamber the 1st is the oxygen-starved area, be provided with speed governing agitator 5.2, remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump 5.10 is connected by gas meter 5.1, air volume regulating valve 5.5 and the boring aeration pipe 5.6 that is located at reactor bottom, half short distance nitration reactor is by the pipe core 6.1 of rising pipe 5.7 connection second ponds 6, and second pond is connected with the oxygen-starved area of half short distance nitration reactor by the sludge reflux pump 5.8 of half short distance nitration reactor; The rising pipe 6.2 of second pond is connected with intermediate pool 7.
Be provided with column reactant 8.1 in the middle of the anaerobic ammonia oxidation reactor 8, this reactant upper end is provided with triphase separator 8.6, the separator top is provided with the rising pipe 8.8 that is used for draining, separator top is communicated with the reactant bottom by effluent recycling pump 8.14, the reactant periphery is provided with water bath sleeve 8.10, water bath sleeve is provided with water-bath recycle pump 8.11 and the perforation water absorption tube 8.9 that carries out water cycle, also is provided with electric heater 8.4 and temperature regulator 8.5 in the water bath sleeve; Sampling valve 8.7 on the reactant is arranged on the water bath sleeve outer wall; Intermediate pool is communicated with the bottom of the reactant of anaerobic ammonia oxidation reactor by the intake pump 8.15 of anaerobic ammonia oxidation reactor.
Embodiment 2: the working method of utilizing said apparatus of the present invention:
Experimental water is taken from the primary sedimentation pond water outlet of municipal sewage plant, Gaobeidian City, Beijing, is typical municipal effluent.Water quality is as follows: COD 200～450mg/l; NH
4 +-N 45～68mg/l; SS 80～150mg/l; Basicity 250～400mg/l; TP 5～9mg/l; PH value 7.0～7.6.Pilot system as shown in Figure 1, by raw water box, anaerobic reactor, dephosphorizing reactor, medium sediment pool, half short distance nitration reactor, second pond, intermediate pool, anaerobic ammonia oxidation reactor.The useful volume of former water tank is 800L.Anaerobic reactor is a column, the diameter of post and highly be respectively 10mm and 2000mm.The useful volume of dephosphorizing reactor is 25L, and reactor size is L * B * H=50 * 10 * 60cm, is divided into 5 lattice chambers, and central dividing plate is connected by staggered up and down aperture, and the 1st lattice chamber is anaerobic zone, and lattice chamber the 2nd～5 is an aerobic zone.The useful volume of half short distance nitration reactor is 30L, and reactor size is L * B * H=50 * 12 * 60cm, is divided into 5 lattice chambers, and central dividing plate is connected by staggered up and down aperture, and the 1st lattice chamber is the oxygen-starved area, and lattice chamber the 2nd～5 is an aerobic zone.The diameter D=20cm in medium sediment pool and pond, two shallow lakes, height H=50cm, the diameter D=1.5cm of pipe core.Anaerobic ammonia oxidation reactor is a column, the diameter of post and highly be respectively 8mm and 2100mm, and the outside of reactor is the water bath with thermostatic control cover, and heating and temperature control unit are installed in the water bath sleeve.
Concrete operating process is as follows:
1) active sludge with denitrogenation dephosphorizing function that will obtain from the municipal sewage plant is added to dephosphorizing reactor and short distance nitration reactor, and postvaccinal sludge concentration MLSS is respectively about 3000mg/l and 4000mg/l; To be added to the anaerobic reactor from the digested sludge that the municipal sewage sludge anaerobic digester is obtained, the sludge concentration MLSS after adding is about 8000mg/l.The Anammox mud that activity is good is added to anaerobic ammonia oxidation reactor, and the sludge concentration MLSS after adding is 6000mg/l; The sponge filler is added in anaerobic reactor and the half short distance nitration reactor simultaneously, filling ratio is respectively 70% and 30%;
2) municipal effluent at first is pumped in the anaerobic reactor, operating temperature maintains 20～30 ℃, the hydraulic detention time HRT of anaerobic reactor is 2～4 hours, by in above-mentioned scope, adjusting hydraulic detention time, guarantee that the COD of water outlet of anaerobic reactor and the ratio of total phosphorus TP are 15～20/1, when COD/TP＜15, suitably shorten hydraulic detention time, when COD/TP＞20, the proper extension hydraulic detention time;
3) the anaerobic reactor water outlet enters into dephosphorizing reactor, the hydraulic detention time HRT of the anaerobic zone of dephosphorizing reactor and aerobic zone was respectively 1～2 hour and 2～3 hours, the dissolved oxygen DO concentration of aerobic zone is controlled at 2～3mg/l, dephosphorizing reactor water outlet Tp＜1mg/l;
4) water outlet of dephosphorizing reactor enters into half short distance nitration reactor by medium sediment pool, the oxygen-starved area of half short distance nitration reactor and the HRT of aerobic zone were respectively 1～2 hour and 3～5 hours, the dissolved oxygen DO of aerobic zone maintains 0.3～0.6mg/l by adjusting aeration rate, return sludge ratio maintains 25%～75%, make the nitrated rate of aerobic zone maintain about 50% by adjusting flooding velocity, mixeding liquid temperature maintains more than 20 ℃ in the reactor simultaneously, by jointly controlling of above-mentioned HRT, DO concentration, nitrated rate, temperature, realize 90% left and right sides nitrite nitrogen NO
2 -The half short distance nitration reaction of-N cumulative percentage;
5) half short distance nitration reactor water outlet enters into anaerobic ammonia oxidation reactor by intermediate pool, and the operating temperature of reactor is 25～30 ℃, and hydraulic detention time HRT is 2～4 hours.
Long run test result shows: the COD clearance of anaerobic reactor is 40%～60%, dephosphorizing reactor water outlet TP＜1mg/l, half short distance nitration reactor water outlet NH
4 +-N: NO
2 --N ratio is 1.0: 1.2, NO
2 --N cumulative percentage＞60%, Anammox water outlet TN=10～15mg/l, water outlet COD＜30mg/l.At energy consumption reduction, CO
2Under the prerequisite that reduces discharging with excess sludge, system's effluent quality reaches the emission standard of country-level A, and this technology is continuable sewage disposal technology.
Claims (2)
1. an anaerobism is produced the urban sewage treating device that methane is removed organism and denitrification of autotrophic organism, it is characterized in that: be provided with raw water box (1), anaerobic reactor (2), dephosphorizing reactor (3), medium sediment pool (4), half short distance nitration reactor (5), second pond (6), intermediate pool (7), anaerobic ammonia oxidation reactor (8); Anaerobic reactor is for loading the anaerobic biofilter of sponge filler (2.1), top is provided with triphase separator (2.3), raw water box is communicated with the bottom of anaerobic reactor by going out water pump (2.8) and water pipe, anaerobic reactor is communicated with the bottom of the anaerobic zone (3.7) of dephosphorizing reactor by rising pipe (2.9), anaerobic reactor goes out on also being provided with down, and carries out the water pipe and the recycle pump (2.5) of water cycle;
Dephosphorizing reactor is equally divided into 5 lattice chambers in the longitudinal direction, and lattice chamber the 1st is anaerobic zone (3.7), is provided with speed governing agitator (3.1), and remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump (3.9) is connected with the aeration head that is located at reactor bottom (3.6) by gas meter (3.8), air volume regulating valve (3.2), dephosphorizing reactor is by the pipe core (4.1) of rising pipe (3.4) connection medium sediment pool, and medium sediment pool is connected with the anaerobic zone of dephosphorizing reactor by the sludge reflux pump (3.5) of dephosphorizing reactor; The rising pipe of medium sediment pool (4.2) is connected with the oxygen-starved area (5.9) of half short distance nitration reactor (5);
Half short distance nitration reactor is equally divided into 5 lattice chambers in the longitudinal direction, each lattice chamber filling sponge filler (5.3), filling ratio is a spatial 30%, lattice chamber the 1st is the oxygen-starved area, be provided with speed governing agitator (5.2), remaining 4 lattice chamber is an aerobic zone, is the flowing hole of 15mm according to the water (flow) direction aperture that is crisscross arranged up and down; Air pump (5.10) is connected with the boring aeration pipe that is located at reactor bottom (5.6) by gas meter (5.1), air volume regulating valve (5.5), half short distance nitration reactor is by the pipe core (6.1) of rising pipe (5.7) connection second pond (6), and second pond is connected with the oxygen-starved area of half short distance nitration reactor by the sludge reflux pump (5.8) of half short distance nitration reactor; The rising pipe of second pond (6.2) is connected with intermediate pool (7);
Be provided with column reactant (8.1) in the middle of the anaerobic ammonia oxidation reactor (8), this reactant upper end is provided with triphase separator (8.6), the separator top is provided with the rising pipe (8.8) that is used for draining, separator top is communicated with the reactant bottom by effluent recycling pump (8.14), the reactant periphery is provided with water bath sleeve (8.10), water bath sleeve is provided with water-bath recycle pump (8.11) and the perforation water absorption tube (8.9) that carries out water cycle, also is provided with electric heater (8.4) and temperature regulator (8.5) in the water bath sleeve; Sampling valve on the reactant (8.7) is arranged on the water bath sleeve outer wall; Intermediate pool is communicated with the reactant bottom of anaerobic ammonia oxidation reactor by the intake pump (8.15) of anaerobic ammonia oxidation reactor.
2. one kind is utilized the described device of claim 1 to carry out the method that anaerobism is removed organism and denitrification of autotrophic organism Treating Municipal Sewage, and its feature may further comprise the steps:
1) active sludge with denitrogenation dephosphorizing function that will obtain from the municipal sewage plant is added to dephosphorizing reactor and half short distance nitration reactor, and postvaccinal sludge concentration MLSS is respectively about 3000mg/ and 4000mg/l; To be added to the anaerobic reactor from the digested sludge that the municipal sewage sludge anaerobic digester is obtained, the sludge concentration MLSS after adding is about 8000mg/l; The Anammox mud that activity is good is added to anaerobic ammonia oxidation reactor, and the sludge concentration MLSS after adding is 6000mg/l; The sponge filler is added in anaerobic reactor and the half short distance nitration reactor simultaneously, filling ratio is respectively 70% and 30%;
2) municipal effluent at first is pumped in the anaerobic reactor, operating temperature maintains 20～30 ℃, the hydraulic detention time HRT of anaerobic reactor is 2～4 hours, by in above-mentioned scope, adjusting hydraulic detention time, guarantee that the COD of water outlet of anaerobic reactor and the ratio of total phosphorus TP are 15～20/1, when COD/TP＜15, suitably shorten hydraulic detention time, when COD/TP＞20, the proper extension hydraulic detention time;
3) the anaerobic reactor water outlet enters into dephosphorizing reactor, the hydraulic detention time HRT of the anaerobic zone of dephosphorizing reactor and aerobic zone was respectively 1～2 hour and 2～3 hours, the dissolved oxygen DO concentration of aerobic zone is controlled at 2～3mg/L, dephosphorizing reactor water outlet TP＜1mg/L;
4) water outlet of dephosphorizing reactor enters into half short distance nitration reactor by medium sediment pool, the oxygen-starved area of half short distance nitration reactor and the HRT of aerobic zone were respectively 1～2 hour and 3～5 hours, the dissolved oxygen DO of aerobic zone maintains 0.3～0.6mg/L by adjusting aeration rate, return sludge ratio maintains 25%～75%, make the nitrated rate of aerobic zone maintain about 50% by adjusting flooding velocity, mixeding liquid temperature maintains more than 20 ℃ in the reactor simultaneously, by jointly controlling of above-mentioned HRT, DO concentration, nitrated rate, temperature, realize 90% left and right sides nitrite nitrogen NO
2 -The half short distance nitration reaction of-N cumulative percentage;
5) half short distance nitration reactor water outlet enters into anaerobic ammonia oxidation reactor by intermediate pool, and the operating temperature of reactor is 25～30 ℃, and hydraulic detention time HRT is 2～4 hours.
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