CN103951059A - Multi-cycle composite bioreactor and process thereof - Google Patents
Multi-cycle composite bioreactor and process thereof Download PDFInfo
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Abstract
The invention relates to a multi-cycle composite bioreactor and a process thereof. The multi-cycle composite bioreactor comprises an anaerobic zone, an anoxic zone, a first synchronization zone, a second synchronization zone, a first aerobic zone, and a second aerobic zone. The process of the multi-cycle composite bioreactor adopts multi-cycle design and composite sludge film coexistence design, comprises an anoxic/anaerobic cycle, a synchronization zone internal cycle, an aerobic zone internal cycle, an anoxic zone/aerobic zone mixed liquid backflow cycle, and a sludge backflow cycle, facilitates enrichment of denitrification dephosphorization bacteria and realization of synchronous nitrification and denitrification, improves the efficiency of denitrification and dephosphorization, and is low in running energy consumption, and flexible in control mode.
Description
Technical field
The invention belongs to sewage treatment area, relate to waste disposal plant, be specifically related to how circulating complex biological reactor and technique thereof.
Background technology
With anaerobic-anoxic-aerobic process (A
2o technique) be the activated sludge process of representative, because simple structure, total hrt are short, control complicacy little, be difficult for producing the advantages such as sludge bulking, be widely used in the existing municipal sewage plant of China.But A
2o technique exists substrate competition, mud contradiction in age, nitrogen removal rate to be difficult to some problems such as raising.The technology such as synchronous nitration and denitrification and denitrification dephosphorization can effectively improve A
2the processing efficiency of O technique.
Traditional theory thinks that the removal of nitrogen is by these two separate process implementations of nitrification and denitrification, because the requirement to envrionment conditions is different, these two processes can not occur simultaneously, and can only carry out by list type, be that nitration reaction occurs under aerobic condition, anti-nitration reaction occurs under the condition of strict anoxic or double oxygen (hypoxemia).But research in recent years shows, nitrification and denitrification can occur in same reactor simultaneously.In aeration tank in many actual motions, also usually find the total nitrogen loss that can produce considerably beyond assimilation, this phenomenon is called as synchronous nitration and denitrification (SND).The superiority of synchronous nitration and denitrification is: improve the clearance of total nitrogen, broken traditional A
2the restriction that O reactor nitrogen removal rate can only improve by increasing internal reflux ratio; Reduced the NO in returned sluge
x -the concentration of-N, has alleviated the competition contradiction of denitrogenation dephosphorizing to matrix.
Traditional theory thinks that the removal of phosphorus is by polyP bacteria (PAOs) anaerobic phosphorus release and these two process implementations of aerobic suction phosphorus.But increasing research shows, under the operational conditions replacing at anaerobic/anoxic, easily enrichment one class have concurrently denitrification and dephosphorization function amphimicrobe---Denitrifying Phosphate Accumulating Organisms (DPB), they can utilize O
2or NO
x --N is as electron acceptor(EA).During application denitrification dephosphorizing reactor Treating Municipal Sewage, not only can save 30% aeration rate and the consumption of 50%COD, but also can reduce approximately 50%, be excess sludge production, thereby reduce investment outlay and working cost.
Therefore, A
2if O technique can realize synchronous nitration and denitrification and denitrification dephosphorization by reasonably optimizing internal structure, will greatly improve processing efficiency, realize energy-saving and cost-reducing simultaneously.
Summary of the invention
The technical problem solving: in order to solve A
2the problem that the synchronous removal effect of nitrogen phosphorus is not good, carbon source is not enough and energy consumption is higher existing in O process operation, the invention provides a kind of how circulating complex biological reactor.Aspect dephosphorization, by building internal-circulation type anoxic-anaerobic environment, realized the enrichment of Denitrifying Phosphate Accumulating Organisms, by denitrification dephosphorization, reduced the demand of system to carbon source; Aspect denitrogenation, by synchronization zone is set, maintain the condition of low-oxygen aeration, for the symbiosis of nitrifier and denitrifying bacteria provides favourable condition, realize efficient synchronous nitration and denitrification, saved the demand to carbon source, strengthened thus the synchronous effect of removing of nitrogen phosphorus.
Technical scheme: the present invention achieves the above object by the following technical programs.
The invention provides a kind of how circulating complex biological reactor, comprise anaerobic zone, oxygen-starved area, the first synchronization zone, the second synchronization zone, the first aerobic zone and the second aerobic zone, wherein
On water inlet manifold, be distributed with one or more water-ins, each water-in all arranges flooding velocity variable valve, flooding velocity variable valve is connected with anaerobic zone, mud return line from second pond is connected in anaerobic zone, between anaerobic zone and oxygen-starved area, partition wall is set, the two ends of partition wall all arrange training wall, and partition wall, away from training wall, arranges respectively submersible water impeller in anaerobic zone and oxygen-starved area;
Oxygen-starved area sidewall is provided with out stream gallery to be connected with the first synchronization zone, between the first synchronization zone and the second synchronization zone, partition wall is set, the two ends of partition wall all arrange training wall, partition wall is away from training wall, in the first synchronization zone and the second synchronization zone, submersible water impeller is set respectively, the water outlet position of the first synchronization zone and the second synchronization zone is provided with online dissolved oxygen meter;
The second synchronization zone sidewall is provided with out stream gallery to be connected with the first aerobic zone, between between the first aerobic zone and the second aerobic zone, partition wall is set, the two ends of partition wall all arrange training wall, partition wall is away from training wall, in the first aerobic zone and the second aerobic zone, submersible water impeller is set respectively, the water outlet position of the first aerobic zone and the second aerobic zone all arranges online dissolved oxygen meter;
The space that anaerobic zone and oxygen-starved area form is communicated with by backflow gallery with the space that the first aerobic zone and the second aerobic zone form, and in backflow gallery, submersible water impeller is set;
The second water outlet position, aerobic zone is provided with online nh 3-n analyser, and inside is filled with filler, and one end is provided with effluent weir, and rising pipe is connected in the second aerobic zone.
Described how circulating complex biological reactor, between anaerobic zone and oxygen-starved area, the first synchronization zone and the second synchronization zone, the first aerobic zone and the second aerobic zone, for arc is connected, and training wall is also arc.
Described how circulating complex biological reactor, water inlet manifold is provided with one or more water-ins, and each water-in is equipped with flooding velocity variable valve.
The technique of described how circulating complex biological reactor is:
1) sewage is controlled by flooding velocity variable valve through water inlet manifold, first distributes and enters anaerobic zone;
2) sewage enters anaerobic zone, fully mixes with the mud refluxing from second pond, carries out anaerobic reaction,
3) mixed solution flows into oxygen-starved area inversely from anaerobic zone along training wall and anaerobic zone, by submersible water impeller, in the space of anaerobic zone and oxygen-starved area formation, realizes internal recycle, carries out hypoxia response,
4) mixed solution enters the first synchronization zone from oxygen-starved area through going out to flow gallery, from the first synchronization zone, along training wall, flow into inversely the second synchronization zone, by submersible water impeller, in the space of the first synchronization zone and the second synchronization zone formation, realize internal recycle, each district's aeration tube valve opening degree is adjusted by being set in the online dissolved oxygen meter at water outlet position in the first synchronization zone and the second synchronization zone
5) mixed solution enters the first aerobic zone from the second synchronization zone through going out to flow gallery, water part is back to oxygen-starved area front end through backflow gallery, part flows into the second aerobic zone inversely along training wall, by submersible water impeller, between the first aerobic zone and the second aerobic zone, realize internal recycle, aerobic zone dissolved oxygen scope is adjusted by being set in the line nh 3-n analyser at water outlet position in the second aerobic zone
6) mixed solution flows out and is precipitated by rising pipe to second pond from the second aerobic zone through effluent weir, the qualified discharge of water outlet after precipitation,
Wherein the circulation multiple proportions in each district is: 1. hypoxic/anaerobic district circulation 200%～500%, 2. synchronization zone internal recycle 100%～300%, 3. aerobic zone internal recycle 100%～300%, 4. aerobic/oxygen-starved area reflux 0%～200%, 5. sludge reflux 50%～100%.
The operating parameter of described how circulating complex biological reactor is:
Sludge loading: 0.06～0.12kgBOD
5/ kgMLSSd;
Volumetric loading: 0.15～0.60kgBOD
5/ m
3d;
Hydraulic detention time: 15～18h;
Mixed solution concentration of suspension: 4000～7000mg/L;
Sludge age: 15～20d;
Dissolved oxygen concentration: 0.3～2.0mg/L.
Beneficial effect:
Advantage of the present invention and effect comprise:
1) many cyclic designs: reactor has 5 circulations.Be respectively the circulation of hypoxic/anaerobic district, synchronization zone internal recycle, aerobic zone internal recycle, the circulation of oxygen-starved area/aerobic zone mixed-liquor return and sludge reflux circulation.Wherein, 1. hypoxic/anaerobic district circulation: be conducive to the enrichment of denitrifying phosphorus removing bacteria, improve denitrogenation dephosphorizing efficiency; 2. synchronization zone internal recycle: muddy water mixes, and realizes synchronous nitration and denitrification under hypoxia condition; 3. aerobic zone internal recycle: strengthening ammonia nitrogen removal effect, good oxygen excess is inhaled phosphorus; 4. reflux in aerobic/oxygen-starved area: provide nitric efficiency, second stage employ carbon source; 5. sludge reflux: stabilized sludge concentration, improves denitrogenation dephosphorizing efficiency.
2) compound mud film symbiosis design: filler has been set up in the second aerobic zone, not only improves sludge concentration, intensifying treatment effect, and can reduce sludge yield approximately 10%, reduced the processing costs of mud.
3) denitrogenation dephosphorizing efficiency is high: by the reasonable combination in each district, system can realize efficient denitrification dephosphorization and synchronous nitration and denitrification.Not only greatly reduce the demand of system to intake limited carbon source and dissolved oxygen, and can improve the efficiency of denitrogenation dephosphorizing.
4) operation energy consumption is low: compare with traditional denitrification and dephosphorization method, its aeration rate significantly reduces, and circulation required drive is from submersible water impeller, and service rating, all lower than common reflux type, has been saved energy consumption and the expense of operation to a great extent.
5) control mode is flexible: the present invention respectively by the first synchronization zone, the second synchronization zone, the first aerobic zone and the second water outlet position, aerobic zone be arranged on line dissolved oxygen meter feedback control aeration tube valve opening degree, thereby realize the independent effectively regulate and control operation of aerating system.The second water outlet position, aerobic zone is arranged on line nh 3-n analyser, can feedback control the first aerobic zone and the second aerobic zone dissolved oxygen.
Accompanying drawing explanation
Fig. 1 is the plot plan of the invention process system.
Wherein, 1-anaerobic zone; 2-oxygen-starved area; 3-the first synchronization zone; 4-the second synchronization zone; 5-the first aerobic zone; 6-the second aerobic zone; 7-backflow gallery; 8a, 8b, 8c-training wall; 9a, 9b-go out to flow gallery; 10-effluent weir; 11-water inlet manifold; 12a, 12b-flooding velocity variable valve; 13-rising pipe; 14-mud return line; 15a, 15b, 15c, 15d, 15e, 15f, 15g-submersible water impeller; 16a, 16b, the online dissolved oxygen meter of 16c, 16d-; The online nh 3-n analyser of 17-; 18a, 18b, 18c-partition wall.
Fig. 2 is the process flow sheet of the invention process system.
Embodiment
The following examples can make the present invention of those skilled in the art comprehend, but do not limit the present invention in any way.
Embodiment 1
As shown in Figure 1, the how circulating complex biological reactor that the present embodiment is used comprises anaerobic zone 1, oxygen-starved area 2, the first synchronization zone 3, the second synchronization zone 4, the first aerobic zone 5 and the second aerobic zone 6, and wherein anaerobic zone 1 and oxygen-starved area 2, the first synchronization zone 3 and the second synchronization zone 4, the first aerobic zone 5 and the second aerobic zone 6 form a circulation gallery separately.
Described how circulating complex biological reactor comprises anaerobic zone 1, oxygen-starved area 2, the first synchronization zone 3, the second synchronization zone 4, the first aerobic zone 5 and the second aerobic zone 6, wherein
On water inlet manifold 11, be distributed with one or more water-ins, each water-in all arranges flooding velocity variable valve, flooding velocity variable valve is connected with anaerobic zone 1, mud return line 14 from second pond is connected in anaerobic zone 1, between anaerobic zone 1 and oxygen-starved area 2, partition wall 18a is set, the two ends of partition wall 18a all arrange training wall 8a, and partition wall 18a is away from training wall 8a, interior submersible water impeller 15a, the 15b of arranging respectively in anaerobic zone 1 and oxygen-starved area 2;
Oxygen-starved area 2 sidewalls are provided with out stream gallery 9a to be connected with the first synchronization zone 3, between the first synchronization zone 3 and the second synchronization zone 4, partition wall 18b is set, the two ends of partition wall 18b all arrange training wall 8b, partition wall 18b is away from training wall 8b, interior submersible water impeller 15c, the 15d of arranging respectively in the first synchronization zone 3 and the second synchronization zone 4, the water outlet position of the first synchronization zone 3 and the second synchronization zone 4 is provided with online dissolved oxygen meter 16a, 16b;
The second synchronization zone 4 sidewalls are provided with out stream gallery 9b to be connected with the first aerobic zone 5, between between the first aerobic zone 5 and the second aerobic zone 6, partition wall 18c is set, the two ends of partition wall 18c all arrange training wall 8c, partition wall 18c is away from training wall 8c, interior submersible water impeller 15e, the 15f of arranging respectively in the first aerobic zone 5 and the second aerobic zone 6, the water outlet position of the first aerobic zone 5 and the second aerobic zone 6 all arranges online dissolved oxygen meter 16c, 16d;
The space that anaerobic zone 1 and oxygen-starved area 2 form is communicated with by backflow gallery 7 with the space that the first aerobic zone 5 and the second aerobic zone 6 form, the interior submersible water impeller 15g that arranges of backflow gallery 7;
The second 6 water outlet positions, aerobic zone is provided with online nh 3-n analyser 17, and inside is filled with filler, and one end is provided with effluent weir 10, and rising pipe 13 is connected in the second aerobic zone 6.
In order to make current smooth and easy, between anaerobic zone 1 and oxygen-starved area 2, the first synchronization zone 3 and the second synchronization zone 4, the first aerobic zone 5 and the second aerobic zone 6, for arc is connected, and training wall is also arc.
As shown in Figure 2, the technique of described how circulating complex biological reactor is:
1) sewage is controlled through flooding velocity variable valve 12a, 12b by water-in through water inlet manifold 11, distributes and enters anaerobic zone 1;
2) sewage enters anaerobic zone 1, fully mixes with the mud refluxing from second pond, carries out anaerobic reaction, larger molecular organics decomposition, anaerobic phosphorus release etc.
3) mixed solution 1 flows into oxygen-starved area 2 along training wall 8a and anaerobic zone 1 inversely from anaerobic zone, carries out hypoxia response; In the space forming by submersible water impeller 15a, 15b, realize internal recycle 1 between anaerobic zone 1 and oxygen-starved area 2.By arrange anaerobic/anoxic alternately, can realize the enrichment of Denitrifying Phosphate Accumulating Organisms DPB, DPB can utilize in sewage nitric nitrogen as electron acceptor(EA), the phosphoric acid salt in excess ingestion water; By nitrate-nitrogen reduction, be nitrogen simultaneously.So, under anaerobic/anoxic alternate run condition, by the metabolism of DPB, can synchronously realize denitrification and dephosphorization double effects,
4) mixed solution 2 enters the first synchronization zone 3 through going out to flow gallery 9a from oxygen-starved area.Subsequently, from the first synchronization zone 3 along training wall 8b, flowing into inversely 4, the second synchronization zones 4, the second synchronization zone is extensions for the first synchronization zone 3, is all provided with submersible water impeller 15c, 15d in twoth district.In the space forming by submersible water impeller 15c, 15d, realize internal recycle 2 between the first synchronization zone 3 and the second synchronization zone 4.Each district's aeration tube valve opening degree all can be adjusted by setting online dissolved oxygen meter 16a, the 16b scope at water outlet position in the first synchronization zone 3 and the second synchronization zone 4.The dissolved oxygen of the first synchronization zone 3 and the second synchronization zone 4 is controlled lower, is aerobic in macroscopic view.But in micro, because aerobic bacteria is movable violent, and overall oxygen amount is lower, when oxygen consumption rate is during higher than oxygen transfer rate, be transformed into anaerobic environment, on microcosmic, be therefore hold concurrently oxygen or even anoxic.Just this macroscopic view aerobic-site conditions of microcosmic anoxic, nitrifier and denitrifying bacteria can be coexisted in the same area, realized efficient synchronous nitration and denitrification,
5) mixed solution enters the first aerobic zone 5 from the second synchronization zone 4 through going out to flow gallery 9b, carries out aerobic nitrification and inhales phosphorus reaction.Water part is back to oxygen-starved area 2 front ends through backflow gallery 7, further carries out anti-nitration reaction.Part flows into the second aerobic zone 6 inversely along training wall 8c.Filler has been filled in the second aerobic zone 6, and filler has increased the place that a large amount of microorganisms perch, and has improved sludge concentration, has strengthened treatment effect.Between the first aerobic zone 5 and the second aerobic zone 6, being also provided with submersible water impeller 15e, 15f, is mainly for muddy water mixes, the raw competing environment of stabilised microorganism.In the space forming by submersible water impeller 15e, 15f, realize internal recycle 3 between the first aerobic zone 5 and the second aerobic zone 6.Each district's aeration tube valve opening degree all can be adjusted by setting online dissolved oxygen meter 16c, the 16d scope at water outlet position in the first aerobic zone 5 and the second aerobic zone 6.The second 6 water outlet positions, aerobic zone is arranged on line nh 3-n analyser 17, can adjust aerobic zone dissolved oxygen scope by setting water outlet ammonia nitrogen concentration,
6) mixed solution flows out and is precipitated by rising pipe 13 to second pond from the second aerobic zone 6 through effluent weir 10, the qualified discharge of water outlet after precipitation,
Wherein the circulation multiple proportions in each district is: 1. hypoxic/anaerobic district circulation 200%～500%, 2. synchronization zone internal recycle 100%～300%, 3. aerobic zone internal recycle 100%～300%, 4. aerobic/oxygen-starved area reflux 0%～200%, 5. sludge reflux 50%～100%.
Described how circulating complex biological reactor, operating parameter is:
Sludge loading: 0.06～0.12kgBOD
5/ kgMLSSd;
Volumetric loading: 0.15～0.60kgBOD
5/ m
3d;
Hydraulic detention time: 15～18h;
Mixed solution concentration of suspension: 4000～7000mg/L;
Sludge age: 15～20d;
Dissolved oxygen concentration: 0.3～2.0mg/L.
Respectively the effect of each functional zone and major parts is elaborated below.
1) flooding velocity variable valve: in order making into water distributed uniform, one or more water-ins can be set on water inlet manifold, flow valve to be all set on each water-in.For example can on water inlet manifold, be symmetrical arranged two water-ins, flow valve is all set on each water-in.
2) anaerobic zone: major function is anaerobic phosphorus release and organonitrogen ammonification.Under the zymogenic effect of amphimicrobian, the larger molecular organics of part readily biodegradable is converted into micromolecular voltaile fatty acid (VFA), polyP bacteria absorbs the synthetic PHB of these small organic molecules and is stored in cell, intracellular poly-phosphorus is hydrolyzed into orthophosphoric acid salt simultaneously, be discharged in water, the energy discharging can be survived for the aerobic polyP bacteria of obligate under the oppressive environment of anaerobism, dissolved phosphorus concentration in result sewage raises, and partly or entirely dissolved organic matter is utilized and makes BOD density loss in sewage.In addition, nitrogen is because also can be removed a part synthesizing of cell.
3) oxygen-starved area: the major function of oxygen-starved area is denitrification denitrogenation and denitrification dephosphorization.Mixed solution is refluxed and is entered behind oxygen-starved area by backflow gallery, denitrifying bacteria utilizes organism in sewage that the nitrate-nitrogen reduction in backflow mixed liquor is discharged in air for nitrogen, effectively complete anti-nitration reaction, so organic concentration and all significantly reductions of nitrate.Secondly at this section, there is the denitrification removal of phosphorus, i.e. denitrification dephosphorization.Be mainly the mode of anaerobic/anoxic alternate run that realized by internal recycling, realized the enrichment of Denitrifying Phosphate Accumulating Organisms (DPB), DPB utilizes nitric nitrogen for electron acceptor(EA), has realized denitrification dephosphorization.
4) synchronization zone: local area is synchronous, nitrification and denitrification reaction all can be carried out in local area.Along with the carrying out of nitrifying process, NO
x --N concentration increases.Although synchronization zone is in hypoxia condition, but bottom aerating system is evenly distributed, make aerobic zone present the microhabital of micro oxygen enrichment, macro environment anoxic, thereby make denitrifying bacteria can realize denitrification process simultaneously, and finally with nitrogen form, discharge.
5) the first aerobic zone: object is aerobic nitrification and inhales phosphorus reaction.Further remove the unreacted ammonia nitrogen of synchronization zone water outlet.Meanwhile, utilize the aerobic excessive suction phosphorus of polyP bacteria, further reduce phosphor in sewage content.Meanwhile, the first water part, aerobic zone is back to oxygen-starved area 2 front ends through backflow gallery 7, realizes the backflow of mixed solution, further improves nitric efficiency.
6) the second aerobic zone: object is by filler, the combinational environment of structure mud film symbiosis, can realize further nitrated.Adding of filler, can increase specific surface area effectively, is more conducive to the raising of sludge concentration, thereby improves removal efficiency.In addition, adding of filler can form microbial film on filler top layer, can realize the gradient of oxygen in longitudinal degree of depth of film, builds the competing environment of life of microcosmic anaerobism, thereby realizes raising of internal carbon source.Can reduce sludge creation amount approximately 10% simultaneously.
7) online dissolved oxygen meter: in the first synchronization zone, the second synchronization zone, the first aerobic zone and the second water outlet position, aerobic zone all arrange online dissolved oxygen meter, be used for monitoring the dissolved oxygen concentration of each water side, district, by setting dissolved oxygen concentration scope, can adjust artificial atmosphere valve and change Air Quantity Required, thereby farthest save energy consumption.
The dissolved oxygen of the first synchronization zone and the second synchronization zone is controlled at respectively 0.6 ± 0.1mg/L and 0.4 ± 0.1mg/L.
7) online nh 3-n analyser: the second water outlet position, aerobic zone is arranged on line nh 3-n analyser, can pass through the concentration of on-line monitoring water outlet ammonia nitrogen, adjust the first aerobic zone aeration rate, the online dissolved oxygen meter linkage of the first water outlet position, aerobic zone is controlled the online dissolved oxygen meter at the second water outlet position, aerobic zone, and concrete control mode is as follows:
By setting the scope of water outlet ammonia nitrogen, effectively adjust the aeration rate of the first aerobic zone, and control by the online dissolved oxygen meter interlock in the first aerobic zone and the second aerobic zone, the gradient that forms oxygen decrescence changes, realize the dynamic control of frequency conversion fan, saved to a great extent energy consumption and the expense of operation.
It is research object that the present embodiment be take the municipal wastewater of Taihu Lake basin Typical Sewage Water Treatment Plant low ratio of carbon to ammonium, by device of the present invention and the tradition A of ratio sewage treatment plant
2o technique is carried out simultaneous test, and Inlet and outlet water water quality is in Table 1.
Table 1 test Inlet and outlet water water quality
Unit: mg/L
Note: water sample is all measured after centrifuging mud-water separation.
As can be seen from the above table, the embodiment of the present invention and the tradition A of ratio sewage treatment plant
2o technique is compared, and total phosphorus (TP) and total nitrogen (TN) can further be removed 0.06mg/L and 2.2mg/L.Meanwhile, can save blower fan available energy dissipation 77.5%, demonstrate the good synchronous removal effect of nitrogen phosphorus.
Claims (5)
1. how circulating complex biological reactor, is characterized in that: comprise anaerobic zone (1), oxygen-starved area (2), the first synchronization zone (3), the second synchronization zone (4), the first aerobic zone (5) and the second aerobic zone (6), wherein
Water inlet manifold is distributed with one or more water-ins on (11), each water-in all arranges flooding velocity variable valve, flooding velocity variable valve is connected with anaerobic zone (1), mud return line (14) from second pond is connected in anaerobic zone (1), between anaerobic zone (1) and oxygen-starved area (2), partition wall (18a) is set, the two ends of partition wall (18a) all arrange training wall (8a), partition wall (18a), away from training wall (8a), arranges respectively submersible water impeller (15a, 15b) in anaerobic zone (1) and oxygen-starved area (2);
Oxygen-starved area (2) sidewall is provided with out stream gallery (9a) to be connected with the first synchronization zone (3), between the first synchronization zone (3) and the second synchronization zone (4), partition wall (18b) is set, the two ends of partition wall (18b) all arrange training wall (8b), partition wall (18b) is away from training wall (8b), submersible water impeller (15c, 15d) is set respectively in the first synchronization zone (3) and the second synchronization zone (4), and the water outlet position of the first synchronization zone (3) and the second synchronization zone (4) is provided with online dissolved oxygen meter (16a, 16b);
The second synchronization zone (4) sidewall is provided with out stream gallery (9b) to be connected with the first aerobic zone (5), between the first aerobic zone (5) and the second aerobic zone (6), partition wall (18c) is set, the two ends of partition wall (18c) all arrange training wall (8c), partition wall (18c) is away from training wall (8c), submersible water impeller (15e, 15f) is set respectively in the first aerobic zone (5) and the second aerobic zone (6), and the water outlet position of the first aerobic zone (5) and the second aerobic zone (6) all arranges online dissolved oxygen meter (16c, 16d);
The space that anaerobic zone (1) and oxygen-starved area (2) form is communicated with by backflow gallery (7) with the space that the first aerobic zone (5) and the second aerobic zone (6) form, and submersible water impeller (15g) is set in backflow gallery (7);
Water outlet position, the second aerobic zone (6) is provided with online nh 3-n analyser (17), and inside is filled with filler, and one end is provided with effluent weir (10), and rising pipe (13) is connected in the second aerobic zone (6).
2. as claimed in claim 1 how circulating complex biological reactor, it is characterized in that: between anaerobic zone (1) and oxygen-starved area (2), the first synchronization zone (3) and the second synchronization zone (4), the first aerobic zone (5) and the second aerobic zone (6), for arc is connected, and training wall is also arc.
3. as claimed in claim 1 how circulating complex biological reactor, is characterized in that: described water inlet manifold (11) is provided with one or more water-ins, and each water-in is equipped with flooding velocity variable valve.
4. the technique of as claimed in claim 1 how circulating complex biological reactor, is characterized in that:
1) sewage is controlled by flooding velocity variable valve through water inlet manifold (11), first distributes and enters anaerobic zone (1);
2) sewage enters anaerobic zone (1), fully mixes with the mud refluxing from second pond, carries out anaerobic reaction;
3) from anaerobic zone, (1) flows into oxygen-starved area (2) along training wall (8a) and anaerobic zone (1) to mixed solution inversely, by submersible water impeller (15a, the 15b) space that (1) and oxygen-starved area (2) forms in anaerobic zone, realize internal recycle, carry out hypoxia response
4) from oxygen-starved area, (2) enter the first synchronization zone (3) through going out to flow gallery (9a) to mixed solution, from the first synchronization zone (3), along training wall (8b), flow into inversely the second synchronization zone (4), internal recycle is realized in the space consisting of in the first synchronization zone (3) and the second synchronization zone (4) submersible water impeller (15c, 15d), each district's aeration tube valve opening degree is adjusted by being set in the online dissolved oxygen meter (16) at water outlet position in the first synchronization zone (3) and the second synchronization zone (4)
5) mixed solution enters the first aerobic zone (5) from the second synchronization zone (4) through going out to flow gallery (9b), water part is back to oxygen-starved area (2) front end through backflow gallery (7), part flows into the second aerobic zone (6) inversely along training wall (8c), by submersible water impeller (15e, 15f), between the first aerobic zone (5) and the second aerobic zone (6), realize internal recycle, aerobic zone dissolved oxygen scope is adjusted by being set in the line nh 3-n analyser (17) at water outlet position in the second aerobic zone (6)
6) mixed solution flows out by rising pipe (13) and precipitates to second pond through effluent weir (10) from the second aerobic zone (6), the qualified discharge of water outlet after precipitation,
Wherein the circulation multiple proportions in each district is: 1. hypoxic/anaerobic district circulation 200%～500%, 2. synchronization zone internal recycle 100%～300%, 3. aerobic zone internal recycle 100%～300%, 4. aerobic/oxygen-starved area reflux 0%～200%, 5. sludge reflux 50%～100%.
5. as claimed in claim 1 how circulating complex biological reactor, operating parameter is:
Sludge loading: 0.06～0.12kgBOD
5/ kgMLSSd;
Volumetric loading: 0.15～0.60kgBOD
5/ m
3d;
Hydraulic detention time: 15～18h;
Mixed solution concentration of suspension: 4000～7000mg/L;
Sludge age: 15～20d;
Dissolved oxygen concentration: 0.3～2.0mg/L.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326559A (en) * | 2014-10-08 | 2015-02-04 | 环境保护部南京环境科学研究所 | System for strengthening post-denitrification denitrogenation process |
| CN104724826A (en) * | 2015-03-24 | 2015-06-24 | 浙江汉蓝环境科技有限公司 | Biochemical treatment method of industrial wastewater and aerobic tank |
| CN106145345A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of biomembrane denitrogenation reactor and denitrogenation method thereof |
| CN106630426A (en) * | 2016-12-27 | 2017-05-10 | 李康敏 | Small and miniature domestic sewage treatment device |
| CN106830322A (en) * | 2017-03-02 | 2017-06-13 | 南京市市政设计研究院有限责任公司 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
| RU2636708C1 (en) * | 2016-11-25 | 2017-11-27 | Общество с ограниченной ответственностью "Джи-Эс-Пи Прожект" | Method and plant for biological wastewater treatment |
| CN108751413A (en) * | 2018-06-25 | 2018-11-06 | 哈尔滨工业大学 | The circulating anoxic of long residence time strengthens town sewage denitrification and dephosphorization method |
| CN110510741A (en) * | 2019-08-31 | 2019-11-29 | 哈尔滨工大博实环境工程有限责任公司 | A kind of internal-circulation type sewage treatment oxidation ditch |
| CN117209062A (en) * | 2023-09-14 | 2023-12-12 | 上海禾元环保集团有限公司 | Circulation flow biochemical treatment reactor and method |
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| RU2644904C1 (en) * | 2017-03-14 | 2018-02-14 | Николай Борисович Марков | Method of biological purification of wastewater from nitrogen phosphoric and organic compounds |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326559A (en) * | 2014-10-08 | 2015-02-04 | 环境保护部南京环境科学研究所 | System for strengthening post-denitrification denitrogenation process |
| CN104724826A (en) * | 2015-03-24 | 2015-06-24 | 浙江汉蓝环境科技有限公司 | Biochemical treatment method of industrial wastewater and aerobic tank |
| CN104724826B (en) * | 2015-03-24 | 2016-06-08 | 浙江汉蓝环境科技有限公司 | A kind of method of biochemical treatment industrial wastewater and Aerobic Pond |
| CN106145345A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of biomembrane denitrogenation reactor and denitrogenation method thereof |
| RU2636708C1 (en) * | 2016-11-25 | 2017-11-27 | Общество с ограниченной ответственностью "Джи-Эс-Пи Прожект" | Method and plant for biological wastewater treatment |
| CN106630426A (en) * | 2016-12-27 | 2017-05-10 | 李康敏 | Small and miniature domestic sewage treatment device |
| CN106830322A (en) * | 2017-03-02 | 2017-06-13 | 南京市市政设计研究院有限责任公司 | It is a kind of suitable for low CN than modified form AAO ponds that sewage/wastewater is administered |
| CN108751413A (en) * | 2018-06-25 | 2018-11-06 | 哈尔滨工业大学 | The circulating anoxic of long residence time strengthens town sewage denitrification and dephosphorization method |
| CN110510741A (en) * | 2019-08-31 | 2019-11-29 | 哈尔滨工大博实环境工程有限责任公司 | A kind of internal-circulation type sewage treatment oxidation ditch |
| CN117209062A (en) * | 2023-09-14 | 2023-12-12 | 上海禾元环保集团有限公司 | Circulation flow biochemical treatment reactor and method |
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