CN103827046A - Processing system and processing method for nitrogen-containing organic waste water - Google Patents
Processing system and processing method for nitrogen-containing organic waste water Download PDFInfo
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- CN103827046A CN103827046A CN201280046865.0A CN201280046865A CN103827046A CN 103827046 A CN103827046 A CN 103827046A CN 201280046865 A CN201280046865 A CN 201280046865A CN 103827046 A CN103827046 A CN 103827046A
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Abstract
A processing system for nitrogen-containing organic waste water, configured by: comprising an autotrophic denitrifying device (30) that denitrifies by performing nitrification, whereby ammonia contained in water to be treated is oxidized into nitrous acid by autotrophic microbes under aerobic conditions, and anaerobic ammonia oxidation by autotrophic microbes under anaerobic conditions, using ammonia nitrogen as an electron donor and nitrate nitrogen as an electron receptor; comprising, at the stage before the autotrophic denitrifying device (30), a suspended organic matter separation device (10) that separates suspended organic matter contained in the water to be treated, and a sludge anaerobic digestion device (40) that anaerobically digests the suspended organic matter separated by the suspended organic matter separation device (10); and comprising a first transfer path (R1) that supplies digestive fluid from the sludge anaerobic digestion device (40) to the autotrophic denitrifying device (30). The processing system for nitrogen-containing waste water efficiently performs anaerobic ammonia oxidation using autotrophic microbes, even if the waste water has a low ammonia concentration and includes suspended organic matter.
Description
Technical field
The present invention relates to treatment system and the treatment process of nitrogenous organic waste water, be particularly suitable for treatment system and the treatment process of the nitrogenous organic waste water that ammonia concentration ratio is lower.
Background technology
In the past, in order to process nitrogenous organic waste water, adopted cycling denitrification method etc. to use the nitrated denitrogenation of biology of heterotrophic microorganism always.The nitrated denitrogenation of such biology is following method: through nitrated operation and denitrogenation operation, the ammonia-state nitrogen in waste water is resolved into nitrogen, described nitrated operation is the operation that nitrite nitrogen is oxidized to nitric nitrogen by using ammonia oxidizing bacteria that the ammonia-state nitrogen in waste water is oxidized to nitrite nitrogen, re-using nitrite-oxidizing bacteria; Described denitrogenation operation is to use heterotrophism denitrifier nitrite nitrogen and nitric nitrogen to be resolved into the operation of nitrogen.
But, for the nitrated denitrogenation of biology in the past, in nitrated operation, need aeration to supply with needed a large amount of oxygen, therefore, there is the problem that aeration increases by needed power costs such as gas blowers, in denitrogenation operation, need a large amount of to add as the methyl alcohol of organic carbon source etc., therefore, there is the problem that cost of drugs increases, and owing to using heterotrophic microorganism, therefore, there is problem that sludge creation amount is many, the processing cost of excess sludge is high etc., thereby have the problem that overall operation cost is high.
Therefore, patent documentation 1 has proposed the bioremediation of a kind of BOD and nitrogenous effluent, the method comprises, BOD and nitrogenous effluent are processed by the order of following operation: the anaerobic treatment operation of removing BOD by anaerobism biogas fermentation method, make a part for ammonia-state nitrogen become the nitrated operation of nitrite type of nitrite nitrogen, the denitrogenation operation that contacts to carry out denitrogenation using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) and with autotrophic denitrification microorganism, wherein, the pH adjustment for the nitrated operation of above-mentioned nitrite type containing carbonic acid (hydrogen) the saline alkali solution biogas that makes to produce in above-mentioned anaerobic treatment operation being contacted with basic solution and obtain.
In addition, in this specification sheets, the present invention will be described to use term " waste water (Abolished water) ", but with known document in the term " waste water (draining) " that uses be synonym.
According to the method, because the ANAMMOX bacterium that is used as autotrophic denitrification microorganism carries out denitrogenation, therefore, do not need to add organic carbon source, and ANAMMOX bacterium is the autotrophic microorganism that productive rate is lower, therefore, the generation of mud significantly tails off, thereby can suppress the generation of excess sludge.
And, stay in the nitrated pH adjusting agent of nitrite type of nitrite nitrogen as the oxidation of the ammonia-state nitrogen for stably making former water, the biogas that makes by use to produce in anaerobic treatment operation contact with basic solution obtain replace commercially available medicament containing carbonic acid (hydrogen) saline alkali solution, can realize the reduction that medicament expense is used.
In addition, proposed a kind of biologically except nitrogen system in patent documentation 2, this system comprises the object handles liquid that makes to contain ammonia composition and BOD composition and under anaerobic ammonium-nitrogen and nitrite nitrogen is converted to the anaerobic ammonium-oxidizing processing of nitrogen molecule.
This biological nitrogen system that removes possesses: the BOD tripping device that the object handles liquid that contains nitrogen component flows into, after being separated by this BOD tripping device, flow into and mainly obtain the aerobism ammonia oxidation groove of the treatment solution that contains nitrite nitrogen containing ammoniacal liquor, the anaerobic ammonium oxidation vessel that the acid nitrogenous treatment solution of nitrous flows into, the anaerobism denitrifying tank that the treatment solution of discharging from this anaerobic ammonium oxidation vessel flows into, and the aerator tank again flowing into from the treatment solution of this anaerobism denitrifying tank, and possess the BOD being separated by above-mentioned BOD tripping device is contained to the lead circuit of above-mentioned anaerobism denitrifying tank of liquid.In addition, the pretreating device such as silk screen, settling bath of contained inclusion in object handles liquid is removed in the upstream side setting of above-mentioned BOD tripping device.
Prior art document
Patent documentation
Patent documentation 1: No. 4496735 communique of Japanese Patent
Patent documentation 2: No. 4632356 communique of Japanese Patent
Summary of the invention
The problem that invention will solve
But, so far, due to the active research that the waste water not carrying out containing suspension and dissolved organic matter carries out Anammox processing, therefore, still do not develop actual treatment system and the treatment process that can effectively carry out to this waste water Anammox processing.
For example, when adopt patent documentation 1 to record to this waste water method time, by carry out Anaerobic Digestion before nitrite acidizing is processed, can reduce solvability BOD, still, can not fully remove suspension BOD, therefore,, in order also to decompose suspension BOD in nitrite acidizing operation, need a large amount of aerations simultaneously, thus, make power cost increase.
In addition, when adopt patent documentation 2 to record to this waste water method time, can remove suspension organism, but because ammonia concentration is lower, therefore, there is following problem: can not in aerobism ammonia oxidation groove, stably generate nitrous acid, and can not in the anaerobic ammonium oxidation vessel of ensuing operation, process fully, thereby ammonia and nitric acid are leaked.
In view of the above problems, the object of the invention is to, even provide a kind of than prior art more effectively and the waste water that contains the organic low ammonia concentration of suspension, also can use autotrophic microorganism effectively to carry out treatment system and the treatment process of the nitrogenous organic waste water of Anammox processing.
The method of dealing with problems
To achieve these goals, the invention provides a kind for the treatment of system of nitrogenous organic waste water, the First Characteristic of its structure is recorded as the claim 1 in claims, it has autotrophic denitrification device, this autotrophic denitrification device carries out denitrogenation processing by the processed water that contains suspension organism and ammonia being carried out to nitrite acidizing processing and Anammox processing, described nitrite acidizing processing is to utilize autotrophic microorganism under aerobic conditions ammonia oxidation to be become to the processing of nitrous acid, described Anammox processing is the processing using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) that under anaerobic utilizes autotrophic microorganism to carry out, wherein, this treatment system possesses: the suspension separating organic matters device from processed water separate out suspended organic matter of being located at described autotrophic denitrification device upstream, to the sludge aerobic digestion device that carries out anaerobic digestion by the isolated suspension organism of described suspension separating organic matters device, and the Digestive system of described sludge aerobic digestion device is supplied to the first transport path of described autotrophic denitrification device.
So far, cannot effectively realize stable Anammox processing to the lower waste water of ammonia concentration.Can this is presumably because, under the lower atmosphere of ammonia concentration, be difficult to suppress the nitrification of ammonia and stably adjust the processing of carrying out nitrite acidizing, and in the only about half of part nitrite acidizing that carries out nitrite acidizing of ammonia is processed, can not stably adjust should residual ammonia amount.
According to described structure, carried out anaerobic digestion by the isolated suspension organism of suspension separating organic matters device by sludge aerobic digestion device, obtain the Digestive system that ammonia-state nitrogen is concentrated.By this Digestive system is supplied to autotrophic denitrification device, the concentration of free ammonia (FA in autotrophic denitrification device; Free Ammonia) uprise the activity inhibited of Nitromonas.Its result, utilizes the nitrite acidizing of Nitrosomas preferentially to carry out, thereby effectively carries out Anammox processing.In this technique, do not need to control to suppress Nitromonas by temperature and pH, can conservation of power cost and cost of drugs.In addition, Anthonisen etc. have reported that Nitromonas is optionally hindered in the situation that the concentration of free ammonia (FA) is 0.1-10ppm.
The Second Characteristic of the structure of the treatment system of nitrogenous organic waste water of the present invention is recorded as claim 2, on the basis of described First Characteristic structure, described autotrophic denitrification device has the nitrite acidizing device that processed water is carried out to described nitrite acidizing processing, with the processed water that has carried out described nitrite acidizing processing is carried out to the anaerobic ammonium oxidation apparatus of described Anammox processing and forms, described the first transport path is made up of the path of the Digestive system to sludge aerobic digestion device described in described nitrite acidizing unit feeding, in addition, the treatment system of this nitrogenous organic waste water also has the second transport path that the Digestive system of described sludge aerobic digestion device is supplied to described anaerobic ammonium oxidation apparatus.
Being formed by the dual grooved of nitrite acidizing device and anaerobic ammonium oxidation apparatus at autotrophic denitrification device, the Digestive system of sludge aerobic digestion device is supplied in nitrite acidizing device through the first transport path, and is further supplied in anaerobic ammonium oxidation apparatus through the second transport path.According to such structure, the ammonia concentration in anaerobic ammonium oxidation apparatus and nitrous acid concentration can be adjusted to suitable ratio, thereby can effectively carry out Anammox.
Be shown below, Anammox reaction is the denitrification reaction carrying out as the autotrophic bacteria of electron acceptor(EA) as electron donor and take the nitrite nitrogen of about 1.3 equivalents by the ammonia-state nitrogen take 1 equivalent.
NH
4 ＋＋1.32NO
2 －＋0.066HCO
3 －＋0.13H
＋→
1.02N
2＋0.26NO
3 －＋0.066CH
2O
0.5N
0.15＋2.03H
2O
If local nitrite nitrogen and the ammonia-state nitrogen that has carried out the nitrification liquid of nitrite acidizing is above formula mol ratio in nitrite acidizing device, effectively carry out Anammox processing, but larger with above formula mol ratio difference in the situation that, Anammox is processed and is stagnated.Even in this case, also can utilize the higher Digestive system of ammonia concentration of supplying with through the second transport path, the mol ratio of nitrite nitrogen and ammonia-state nitrogen is adjusted to appropriate value, left and right, for example 1:1.3～1.4, thereby can effectively carries out Anammox.
The 3rd feature of the structure of the treatment system of nitrogenous organic waste water of the present invention is recorded as claim 3, on the basis of described First Characteristic structure, on described the first transport path, configure heterotrophism nitrogen rejection facility, and have the 3rd transport path that the treatment solution of described autotrophic denitrification device is supplied to described heterotrophism nitrogen rejection facility, described heterotrophism nitrogen rejection facility utilizes heterotrophism denitrification microorganism to carry out nitrite nitrogen and nitrate-nitrogen reduction to become the denitrogenation processing of nitrogen molecule.
According to described structure, by a part for the treatment solution of autotrophic denitrification device being returned to heterotrophism nitrogen rejection facility through the 3rd transport path, and containedly in the Digestive system of sludge aerobic digestion device mainly carry out denitrogenation processing using dissolved organic matter as electron donor(ED) and using contained nitric nitrogen in the treatment solution of autotrophic denitrification device as the heterotrophism denitrification microorganism of electron acceptor(EA) by utilizing, can reduce from autotrophic denitrification device and be discharged to the nitric acid amount system.
The 4th feature of the structure of the treatment system of nitrogenous organic waste water of the present invention is recorded as claim 4, on the basis of described Second Characteristic structure, on described the first transport path, configure heterotrophism nitrogen rejection facility, and have the 3rd transport path that the treatment solution of described anaerobic ammonium oxidation apparatus is supplied to described heterotrophism nitrogen rejection facility, described heterotrophism nitrogen rejection facility utilizes heterotrophism denitrification microorganism to carry out nitrite nitrogen and nitrate-nitrogen reduction to become the denitrogenation processing of nitrogen molecule.
According to described structure, by a part for the treatment solution of anaerobic ammonium oxidation apparatus being returned to heterotrophism nitrogen rejection facility through the 3rd transport path, and by carrying out the denitrogenation processing of the main heterotrophism denitrification microorganism take dissolved organic matter as electron donor(ED) and take nitric nitrogen contained in the treatment solution of anaerobic ammonium oxidation apparatus as electron acceptor(EA) contained in the Digestive system of sludge aerobic digestion device, can reduce the nitric acid amount from anaerobic ammonium oxidation apparatus is discharged to system.
The 5th feature of the structure of the treatment system of nitrogenous organic waste water of the present invention is recorded as claim 5, on the basis of the arbitrary structure in described the first～four feature, and in processed water, 1) NH
3-N (ammonia nitrogen concentration) < 100ppm, 2) BOD/NH
3-N > 3.0, in the treatment solution of described dissolved organic matter decomposer, 3) 0.5 < BOD/NH
3-N < 2.0.
In autotrophic denitrification device, regulate aeration rate, dissolved oxygen concentration is controlled to suitable scope, but at ammonia nitrogen concentration lower than 100ppm in the situation that, in the time that less variation occurs aeration air quantity, dissolved oxygen concentration significantly changes.Even in this case, by by BOD/NH
3-N is adjusted to the value larger than 0.5, also can suppress by BOD oxygen consumed the larger variation of dissolved oxygen concentration.In addition, if BOD/NH
3-N exceedes 2.0, and aeration rate increases, from energy-conservation viewpoint, not preferred.
The invention provides a kind for the treatment of process of nitrogenous organic waste water, the First Characteristic of its structure is recorded as claim 6, the method comprises: the processed water that contains suspension organism and ammonia is carried out to autotrophic denitrification treatment process, described autotrophic denitrification treatment process comprises: utilize autotrophic microorganism under aerobic conditions ammonia oxidation to be become to the nitrite acidizing treatment process of nitrous acid, and the Anammox treatment process using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) of under anaerobic utilizing autotrophic microorganism to carry out, wherein, before described autotrophic denitrification treatment process, carry out the suspension separating organic matters treatment process from processed water separate out suspended organic matter, with to the Anaerobic Digestion operation of carrying out anaerobic digestion by the isolated suspension organism of described suspension separating organic matters treatment process, and the Digestive system of described Anaerobic Digestion operation is supplied in described autotrophic denitrification treatment process.
The Second Characteristic of the structure of the treatment process of nitrogenous organic waste water of the present invention is recorded as claim 7, on the basis of described First Characteristic structure, described nitrite acidizing treatment process and described Anammox treatment process, for independently treatment process of difference, are distributed described Digestive system to be supplied in described nitrite acidizing treatment process and described Anammox treatment process.
The 3rd feature of the structure of the treatment process of nitrogenous organic waste water of the present invention is recorded as claim 8, on the basis of described First Characteristic structure, utilize heterotrophism denitrification microorganism described Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after described heterotrophism denitrogenation processing operation is supplied in described autotrophic denitrification treatment process, and the treatment solution after described autotrophic denitrification treatment process is supplied in described heterotrophism denitrogenation processing operation.
The 4th feature of the structure of the treatment process of nitrogenous organic waste water of the present invention is recorded as claim 9, on the basis of described Second Characteristic structure, utilize heterotrophism denitrification microorganism described Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after described heterotrophism denitrogenation processing operation is supplied in described nitrite acidizing treatment process, and the treatment solution after described Anammox treatment process is supplied in described heterotrophism denitrogenation processing operation.
The effect of invention
As mentioned above, according to the present invention, even waste water more effective than prior art and that contain the organic low ammonia concentration of suspension can be provided, also can use autotrophic microorganism effectively to carry out treatment system and the treatment process of the nitrogenous organic waste water of Anammox processing.
Accompanying drawing explanation
[Fig. 1] Fig. 1 is the explanatory view of the first embodiment for the treatment of system of the present invention.
[Fig. 2] Fig. 2 is the explanatory view of the second embodiment for the treatment of system of the present invention.
[Fig. 3] Fig. 3 is the explanatory view of the 3rd embodiment for the treatment of system of the present invention.
[Fig. 4] Fig. 4 is the explanatory view of the 4th embodiment for the treatment of system of the present invention.
[Fig. 5] Fig. 5 is the explanatory view for the treatment of system of the present invention.
Nomenclature
10: suspension separating organic matters device
20: dissolved organic matter decomposer
30: autotrophic denitrification device
30A: nitrite acidizing device
30B: anaerobic ammonium oxidation apparatus
40: sludge aerobic digestion device
R1: the first transport path
R2: the second transport path
R3: the 3rd transport path
R4: the 4th transport path
Embodiment
Below, the embodiment of the treatment system to nitrogenous organic waste water of the present invention and treatment process describes.
Fig. 1 shows the treatment system of the nitrogenous organic waste water of the first embodiment.This treatment system is the system that the processed water to containing suspension organism and ammonia purifies, and it possesses: suspension separating organic matters device 10, sludge aerobic digestion device 40, autotrophic denitrification device 30 and the first transport path R1.
In suspension separating organic matters device 10, by suspension separating organic matters contained in processed water, in sludge aerobic digestion device 40, will carry out anaerobic digestion by the isolated suspension organism of suspension separating organic matters device 10.The Digestive system of sludge aerobic digestion device 40 is supplied in autotrophic denitrification device 30 through the first transport path R1, in autotrophic denitrification device 30, carry out nitrite acidizing and process and Anammox processing, the parting liquid of suspension separating organic matters device 10 is carried out to denitrogenation processing.
As suspension separating organic matters device 10, can adopt any device in the mechanical separation devices such as settler, cyclator, floating tripping device, screen apparatus, membrane separation unit, swirl-flow devices, screw press and decantor to form.Multiple devices that also can combine in said apparatus form.
Nitrite acidizing processing is under aerobic conditions, utilizes autotrophic microorganism (autotrophy Nitrosomas) processed water that contains ammonia to be carried out ammonia-state nitrogen to be oxidized to the processing of nitrite nitrogen.
Anammox processing be under anaerobic, the Anammox processing using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) that utilizes autotrophic microorganism (autotrophic denitrification bacterium) to carry out, as shown in following chemical formula, it is the processing that the nitrite nitrogen of the ammonia-state nitrogen of 1 equivalent and about 1.3 equivalents is changed into nitrogen molecule by denitrification reaction.
NH
4 ＋＋1.32NO
2 －＋0.066HCO
3 －＋0.13H
＋→
1.02N
2＋0.26NO
3 －＋0.066CH
2O
0.5N
0.15＋2.03H
2O
So far, can not effectively realize stable Anammox processing to the lower waste water of ammonia concentration.This be due to, under the lower atmosphere of ammonia concentration, is difficult to suppress the nitrification of ammonia and stably adjusts the processing of carrying out nitrite acidizing, and in the only about half of part nitrite acidizing that carries out nitrite acidizing of ammonia is processed, can not stably adjust should residual ammonia amount.
According to this treatment system, the parting liquid that utilizes the suspension separating organic matters device 10 having in the upstream of autotrophic denitrification device 30 from processed water is isolated suspension organism is supplied to autotrophic denitrification device 30.Utilize suspension separating organic matters device 10 to carry out anaerobic digestion from the isolated suspension organism of processed water by sludge aerobic digestion device 40, thereby can obtain the Digestive system that ammonia-state nitrogen is concentrated.
Even in suspension separating organic matters device 10, isolate the ammonia nitrogen concentration of the parting liquid after suspension organism lower, be supplied to autotrophic denitrification device 30 by the Digestive system after such ammonia-state nitrogen is concentrated through the first transport path R1, in autotrophic denitrification device 30, the concentration of free ammonia (FA; Free Ammonia) uprise.Its result, the activity inhibited of Nitromonas, utilizes the nitrite acidizing that Nitrosomas carries out preferentially to carry out, thereby has effectively carried out Anammox processing.
Preferably the concentration of free ammonia (FA) is adjusted to the scope of 0.1-10ppm, by optionally suppressing the activity of Nitromonas, even ammonia concentration, lower than the processed water of 100ppm, also can be processed well.In addition, do not need to control to suppress Nitromonas by temperature, pH, can conservation of power cost, cost of drugs.
The concentration of free ammonia can be adopted with the following method and try to achieve: measure the ammonium ion concentration of processed water by diaphragm type ion electrode method etc., and as shown in following [mathematical expression 1], try to achieve according to the calculating formula of the Anthonisen being calculated by the relation of temperature, pH etc.
[mathematical expression 1]
As autotrophic denitrification device 30, can adopt and will carry out the nitrite acidizing groove of nitrite acidizing processing and carry out the in-line structure of double flute that the ammonia oxidation groove configured in series of Anammox processing forms or the single-channel type structure that adopts Canon or SNAP etc.
The method that is called as Canon is as follows: by supply with micro-oxygen in Sequential Bach Reactor (SBR), utilize the effect of ammonia oxidizing bacteria by the only about half of nitrous acid that changes into of the ammonia of inflow, and carry out removing of ammonia in a groove.
The method that is called as SNAP is as follows: the flora that contains anaerobism and carry out the autotrophic denitrification bacterium of ammonia oxidation is adhered to and is fixed on carrier, and make to adhere to the ammonia treatment material that is fixed with the flora that contains ammonia oxidizing bacteria contact and remove deammoniation with ammonia-containing water on this flora outside surface.
In addition, also has following method: make to comprise that the carrier that is fixed with ammonia oxidizing bacteria and autotrophic denitrification bacterium flows in reactive tank, and the molten oxygen of depositing is adjusted to the scope that does not hinder denitrification reaction and removes deammoniation.
; utilize this treatment system to go the treatment process of nitrogenous organic waste water; the treatment process of this nitrogenous organic waste water is carried out autotrophic denitrification treatment process to the processed water that contains suspension organism and ammonia, and this autotrophic denitrification treatment process comprises: under aerobic conditions utilize autotrophic microorganism to carry out the Anammox treatment process using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) that ammonia oxidation is become to the nitrite acidizing treatment process of nitrous acid and under anaerobic utilizes autotrophic microorganism to carry out.
Specifically, carry out the treatment process of following nitrogenous organic waste water, before above-mentioned autotrophic denitrification treatment process, carry out the suspension separating organic matters treatment process of separate out suspended organic matter from processed water and to the Anaerobic Digestion operation of carrying out anaerobic digestion by the isolated suspension organism of above-mentioned suspension separating organic matters treatment process, and the Digestive system of above-mentioned Anaerobic Digestion operation is supplied in above-mentioned autotrophic denitrification treatment process.
Fig. 2 shows the treatment system of the second embodiment.In this treatment system, above-mentioned autotrophic denitrification device 30 forms with the double flute tandem of processed water being carried out to the nitrite acidizing device 30A of nitrite acidizing processing and carrying out the anaerobic ammonium oxidation apparatus 30B of Anammox processing to having carried out nitrite acidizing processed water after treatment.
In this case, the path that the Digestive system of sludge aerobic digestion device 40 is supplied to nitrite acidizing device 30A becomes the first transport path R1.In addition, the path that the Digestive system of sludge aerobic digestion device 40 is supplied to anaerobic ammonium oxidation apparatus 30B is the second transport path R2.
By autotrophic denitrification device 30 is formed with the dual grooved of nitrite acidizing device 30A and anaerobic ammonium oxidation apparatus 30B, the Digestive system of sludge aerobic digestion device 40 is fed into nitrite acidizing device 30A by the first transport path R1, is fed into anaerobic ammonium oxidation apparatus 30B by the second transport path R2.
Even in nitrite acidizing device 30A, the nitrite nitrogen of the local nitrification liquid that has carried out nitrite acidizing and ammonia-state nitrogen and proper ratio differ greatly, by the Digestive system higher ammonia nitrogen concentration of sludge aerobic digestion device 40 is supplied to anaerobic ammonium oxidation apparatus 30B by the second transport path R2, also the ammonia concentration in anaerobic ammonium oxidation apparatus 30B and nitrous acid concentration can be adjusted to suitable value, left and right, for example 1:1.3～1.4, thereby can effectively carry out Anammox.
; on the basis of the treatment process of above-mentioned nitrogenous organic waste water; carry out the treatment process of nitrogenous organic waste water; wherein; above-mentioned nitrite acidizing treatment process and above-mentioned Anammox treatment process, for independently treatment process of difference, are distributed above-mentioned Digestive system to be supplied in above-mentioned nitrite acidizing treatment process and above-mentioned Anammox treatment process.
Fig. 3 shows the treatment system of the 3rd embodiment.In this treatment system, on the first transport path R1 of the treatment system of above-mentioned first method, configuration using heterotrophism denitrification microorganism carries out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism nitrogen rejection facility 20 of the denitrogenation processing of nitrogen molecule, and this treatment system possesses the 3rd transport path R3 that the treatment solution of autotrophic denitrification device 30 is supplied to heterotrophism nitrogen rejection facility 20.
Utilize the first transport path R1 that the treatment solution of sludge aerobic digestion device 40 is supplied to heterotrophism nitrogen rejection facility 20, utilize the 3rd transport path R3 that a part for the treatment solution of autotrophic denitrification device 30 is returned to heterotrophism nitrogen rejection facility 20.By such structure, can promote contained main denitrogenation processing of carrying out as the heterotrophism denitrification microorganism of electron acceptor(EA) using dissolved organic matter as electron donor(ED) and using contained nitric nitrogen in the treatment solution of autotrophic denitrification device 30 in the Digestive system of sludge aerobic digestion device 40, be discharged to the nitric acid amount system thereby can reduce from autotrophic denitrification device 30.
Contain a large amount of dissolved organic matters if be supplied in the processed water of autotrophic denitrification device 30, nitrite acidizing is processed required oxygen and is expended in the disaggregating treatment of dissolved organic matter, the Efficiency Decreasing of nitrite acidizing processing.
Dissolved organic matter contained in the Digestive system of sludge aerobic digestion device 40 is by heterotrophism nitrogen rejection facility 20 disaggregating treatment, the processed water that dissolved organic matter concentration is reduced by this heterotrophism nitrogen rejection facility 20 is supplied to autotrophic denitrification device 30, therefore, can not hinder the processing of carrying out ammonia-state nitrogen to be oxidized to the autotrophic microorganism of the nitrite acidizing processing of nitrite nitrogen, thereby can effectively process.
On the basis of the treatment process of the nitrogenous organic waste water of above-mentioned the first embodiment, the treatment process of the nitrogenous organic waste water that can be achieved as follows, utilize heterotrophism denitrification microorganism above-mentioned Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after above-mentioned heterotrophism denitrogenation processing operation is supplied to above-mentioned autotrophic denitrification treatment process, and the treatment solution after above-mentioned autotrophic denitrification treatment process is supplied to above-mentioned heterotrophism denitrogenation processing operation.
Fig. 4 shows the treatment system of the 4th embodiment.In this treatment system, on the first transport path R1 of the treatment system of above-mentioned second method, configuration using heterotrophism denitrification microorganism carries out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism nitrogen rejection facility 20 of the denitrogenation processing of nitrogen molecule, and this treatment system possesses the 3rd transport path R3 that the treatment solution of anaerobic ammonium oxidation apparatus 30B is supplied to heterotrophism nitrogen rejection facility 20.
Utilize the first transport path R1 that the treatment solution of sludge aerobic digestion device 40 is supplied to heterotrophism nitrogen rejection facility 20, utilize the 3rd transport path R3 that a part for the treatment solution of anaerobic ammonium oxidation apparatus 30B is returned to heterotrophism nitrogen rejection facility 20.By such structure, carry out contained main denitrogenation processing of carrying out as the heterotrophism denitrification microorganism of electron acceptor(EA) using dissolved organic matter as electron donor(ED) and using contained nitric nitrogen in the treatment solution of anaerobic ammonium oxidation apparatus in the Digestive system of sludge aerobic digestion device 40, be discharged to the nitric acid amount system thereby can reduce from anaerobic ammonium oxidation apparatus 30B.
Contain a large amount of dissolved organic matters if be supplied in the processed water of nitrite acidizing device 30A, the required oxygen of nitrite acidizing is expended in the disaggregating treatment of dissolved organic matter, therefore, and the Efficiency Decreasing of nitrite acidizing processing.But, dissolved organic matter contained in the Digestive system of sludge aerobic digestion device 40 is by heterotrophism nitrogen rejection facility 20 disaggregating treatment, the processed water that dissolved organic matter concentration is reduced by this heterotrophism nitrogen rejection facility 20 is supplied to nitrite acidizing device 30A, therefore, can not hinder the processing of carrying out ammonia-state nitrogen to be oxidized to the autotrophic microorganism of the nitrite acidizing processing of nitrite nitrogen, thereby can effectively process.
On the basis of the treatment process of above-mentioned second method, carry out the treatment process of following nitrogenous organic waste water, utilize heterotrophism denitrification microorganism above-mentioned Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after above-mentioned heterotrophism denitrogenation processing operation is supplied to above-mentioned nitrite acidizing treatment process, and the treatment solution after above-mentioned Anammox treatment process is supplied to above-mentioned heterotrophism denitrogenation processing operation.
As shown in Figure 5, at the ammonia nitrogen concentration of processed water that imports this Waste Water Treatment, lower than 100ppm, preferably BOD is greater than 3.0 with the ratio of the ammonia nitrogen concentration of processed water.Particularly, more preferably ratio the greater of suspension organic concentration.This be due to, ammonia organic efficiency in sludge aerobic digestion device 40 improves, it is easy that the adjustment of the concentration of free ammonia in autotrophic denitrification device 30 becomes.And, be adjusted into and be greater than 0.5 and be less than 2.0 scope by the BOD in the parting liquid of suspension separating organic matters device 10 and the ratio of ammonia nitrogen concentration, also can make nitrite acidizing stable.
In autotrophic denitrification device 30, regulate aeration rate, dissolved oxygen concentration is controlled to suitable scope, but at ammonia nitrogen concentration lower than 100ppm in the situation that, aeration air quantity generation subtle change, dissolved oxygen concentration also occurs significantly to change.Even in this case, by by BOD/NH
3-N is adjusted to the value that is greater than 0.5, also can suppress the variation that dissolved oxygen concentration is larger by BOD oxygen consumed.In addition, if BOD/NH
3-N exceedes 2.0, and aeration rate increases, from energy-conservation viewpoint, not preferred.
The adjustment of aeration rate is except the method for the measured value based on dissolved oxygen concentration, and the method that can also be undertaken by the measured value based on ammonium ion concentration or nitrite ion concentration and the method that their combinations have been carried out combining are carried out.
So, according to the present invention, can also be to the wastewater application Anammox processing of the so low ammonia concentration of current unconsummated lower water.
The electric energy using in sewage farm is about 6,300,000,000 kWh (putting down into for 16 years, 2004), accounts at 0.7% of the electric energy in Japan using, is equivalent to 1 national consumption electric energy of Uruguay or Jamaica.Wherein, the consumption electric energy of aeration blower accounts for 25～30%.According to the present invention, by the Anammox processing of 43% the oxygen amount that only needs in theory complete nitration treatment is in the past applied to lower water treatment, produce obvious power savings, and can make larger contribution to cutting down greenhouse gases.
Above-mentioned embodiment is all examples of the present invention, and the present invention is not subject to the restriction of this record, and the concrete structure of each portion also can suitably design in the scope that realizes action effect of the present invention.
Claims (9)
1. the treatment system of a nitrogenous organic waste water, it has autotrophic denitrification device, this autotrophic denitrification device carries out denitrogenation processing by the processed water that contains suspension organism and ammonia being carried out to nitrite acidizing processing and Anammox processing, described nitrite acidizing processing is to utilize autotrophic microorganism under aerobic conditions ammonia oxidation to be become to the processing of nitrous acid, described Anammox processing is the processing using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) that under anaerobic utilizes autotrophic microorganism to carry out
Wherein, this treatment system possesses:
Be located at described autotrophic denitrification device upstream the suspension separating organic matters device from processed water separate out suspended organic matter,
To undertaken by the isolated suspension organism of described suspension separating organic matters device anaerobic digestion sludge aerobic digestion device and
The Digestive system of described sludge aerobic digestion device is supplied to the first transport path of described autotrophic denitrification device.
2. the treatment system of nitrogenous organic waste water according to claim 1, wherein,
Described autotrophic denitrification device has to processed water is carried out the nitrite acidizing device of described nitrite acidizing processing and carries out the anaerobic ammonium oxidation apparatus of described Anammox processing and form having carried out the processed water of described nitrite acidizing processing,
Described the first transport path is made up of the path of the Digestive system to sludge aerobic digestion device described in described nitrite acidizing unit feeding,
The treatment system of this nitrogenous organic waste water also has the second transport path that the Digestive system of described sludge aerobic digestion device is supplied to described anaerobic ammonium oxidation apparatus.
3. the treatment system of nitrogenous organic waste water according to claim 1, wherein, on described the first transport path, configure heterotrophism nitrogen rejection facility, this heterotrophism nitrogen rejection facility utilizes heterotrophism denitrification microorganism nitrite nitrogen and nitrate-nitrogen reduction to be become to the denitrogenation processing of nitrogen molecule
The treatment system of this nitrogenous organic waste water possesses the 3rd transport path that the treatment solution of described autotrophic denitrification device is supplied to described heterotrophism nitrogen rejection facility.
4. the treatment system of nitrogenous organic waste water according to claim 2, wherein, on described the first transport path, configure heterotrophism nitrogen rejection facility, this heterotrophism nitrogen rejection facility utilizes heterotrophism denitrification microorganism nitrite nitrogen and nitrate-nitrogen reduction to be become to the denitrogenation processing of nitrogen molecule
The treatment system of this nitrogenous organic waste water possesses the 3rd transport path that the treatment solution of described anaerobic ammonium oxidation apparatus is supplied to described heterotrophism nitrogen rejection facility.
5. according to the treatment system of the nitrogenous organic waste water described in any one in claim 1～4, wherein, in processed water,
1) NH
3-N (ammonia nitrogen concentration) < 100ppm,
2)BOD/NH
3-N＞3.0，
In the treatment solution of described dissolved organic matter decomposer,
3)0.5＜BOD/NH
3-N＜2.0。
6. a treatment process for nitrogenous organic waste water, the method comprises: the processed water that contains suspension organism and ammonia is carried out to autotrophic denitrification treatment process,
Described autotrophic denitrification treatment process comprises: the Anammox treatment process using ammonia-state nitrogen as electron donor and using nitrite nitrogen as electron acceptor(EA) of utilizing autotrophic microorganism under aerobic conditions ammonia oxidation to be become to the nitrite acidizing treatment process of nitrous acid and under anaerobic utilize autotrophic microorganism to carry out
Wherein, before described autotrophic denitrification treatment process, carry out from the suspension separating organic matters treatment process of processed water separate out suspended organic matter with to the Anaerobic Digestion operation of carrying out anaerobic digestion by the isolated suspension organism of described suspension separating organic matters treatment process, and the Digestive system of described Anaerobic Digestion operation is supplied in described autotrophic denitrification treatment process.
7. the treatment process of nitrogenous organic waste water according to claim 6, wherein, described nitrite acidizing treatment process and described Anammox treatment process, for independently treatment process of difference, are distributed described Digestive system to be supplied in described nitrite acidizing treatment process and described Anammox treatment process.
8. the treatment process of nitrogenous organic waste water according to claim 6, wherein, utilize heterotrophism denitrification microorganism described Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after described heterotrophism denitrogenation processing operation is supplied in described autotrophic denitrification treatment process, and the treatment solution after described autotrophic denitrification treatment process is supplied in described heterotrophism denitrogenation processing operation.
9. the treatment process of nitrogenous organic waste water according to claim 7, wherein, utilize heterotrophism denitrification microorganism described Digestive system to be carried out nitrite nitrogen and nitrate-nitrogen reduction to become the heterotrophism denitrogenation processing operation of nitrogen molecule, treatment solution after described heterotrophism denitrogenation processing operation is supplied in described nitrite acidizing treatment process, and the treatment solution after described Anammox treatment process is supplied in described heterotrophism denitrogenation processing operation.
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| JP2011-270506 | 2011-12-09 | ||
| JP2011270506A JP5814768B2 (en) | 2011-12-09 | 2011-12-09 | Nitrogen-containing organic wastewater treatment system and treatment method |
| PCT/JP2012/081600 WO2013084973A1 (en) | 2011-12-09 | 2012-12-06 | Processing system and processing method for nitrogen-containing organic waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366889A (en) * | 2015-11-26 | 2016-03-02 | 中国市政工程华北设计研究总院有限公司 | High-standard urban sewage nitrogen and phosphorus removal system without external carbon sources |
| CN106882902A (en) * | 2017-03-10 | 2017-06-23 | 桂林理工大学 | A kind of method for processing sanitary sewage |
| CN111484136A (en) * | 2020-05-18 | 2020-08-04 | 北京工业大学 | Novel energy-saving high-effluent-standard sewage treatment system and process |
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| JP6209388B2 (en) * | 2013-08-07 | 2017-10-04 | 新日鐵住金株式会社 | Nitrite-type nitrification method for wastewater containing ammonia nitrogen |
| TWI586610B (en) * | 2015-01-15 | 2017-06-11 | 黎明興技術顧問股份有限公司 | Fluidized bed reactor for ammonia laden wastewater and method for treating ammonia laden wastewater |
| CN110066012A (en) * | 2019-03-28 | 2019-07-30 | 华南师范大学 | A kind of process for reclaiming cooperateing with recycling nitrogen and phosphorus from sludge using anaerobic digestion |
| CN111807510A (en) * | 2019-04-09 | 2020-10-23 | 大禹环服（北京）科技有限公司 | System for generating electron donor by anaerobic digestion to realize denitrification |
| WO2021107529A1 (en) * | 2019-11-25 | 2021-06-03 | 주식회사 엘지에너지솔루션 | Battery module, method for manufacturing same, and battery pack |
| CN111115822B (en) * | 2020-01-20 | 2023-11-21 | 青岛思普润水处理股份有限公司 | PN/A integrated autotrophic nitrogen removal system based on MBBR and quick starting method |
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| WO2013084973A8 (en) | 2014-04-17 |
| WO2013084973A1 (en) | 2013-06-13 |
| CN103827046B (en) | 2016-04-20 |
| JP5814768B2 (en) | 2015-11-17 |
| JP2013121565A (en) | 2013-06-20 |
| MY167389A (en) | 2018-08-16 |
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