CN102976584B - Self-heating high temperature aerobic treatment device for sewage sludge - Google Patents
Self-heating high temperature aerobic treatment device for sewage sludge Download PDFInfo
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- CN102976584B CN102976584B CN201210585791XA CN201210585791A CN102976584B CN 102976584 B CN102976584 B CN 102976584B CN 201210585791X A CN201210585791X A CN 201210585791XA CN 201210585791 A CN201210585791 A CN 201210585791A CN 102976584 B CN102976584 B CN 102976584B
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Abstract
The invention relates to a self-heating high temperature aerobic treatment device for sewage sludge. An outlet end of a pre-condensing device (1) is communicated with a first sludge conveying tube (6) through a cold sludge inlet end. The first sludge conveying tube is provided with a first sludge pump (6a). A heated sludge outlet end of a heat exchanger (2) is communicated with a second sludge conveying tube (7) through a self-heating high temperature aerobic digestion reactor (3). An outlet end of the self-heating high temperature aerobic digestion reactor (3) is communicated with a hot sludge inlet end of the heat exchanger (2) through a third sludge conveying tube (8). The third sludge conveying tube is provided with a second sludge pump (8a). A cooled sludge outlet end of the heat exchanger (2) is communicated with a denitrification reactor (4) through a fourth sludge conveying tube (9). An outlet end of the denitrification reactor (4) is communicated with an inlet end of a sludge dehydrating device (5) through an output tube (10) which is provided with a third sludge pump (10a). A peculiar smell treatment device (11), a wind guide tube (12) and a draught fan (12a) are arranged.
Description
Technical field
The present invention relates to the processing of sewage sludge, be specially a kind of sewage sludge autothermal thermophilic aerobic digestion and handle the decrement device.
Background technology
Along with China's town sewage processing power constantly increases, the surplus sludge volume that sewage disposal produces also constantly increases thereupon.The excess sludge that sewage treatment process produces comprises preliminary sedimentation tank mud and second pond mud, and wherein second pond accounts for more than 80%.For satisfying the requirement of the follow-up disposal of mud, in the treating processes to mud, need to carry out decrement to mud, the decrement mode comprises and reduces water ratio and reduce the volume of mud and remove the organism in the mud and reduce the quality (volume) of mud itself.
The biological decrement treatment of sewage sludge has anaerobism, hold concurrently oxygen or several modes of aerobic sigestion.The aerobic sigestion treatment technology namely by reducing the quality (volume) that organic content in the mud reduces mud itself, adopts sludge dehydration device to carry out processed then, reduces the volume of mud by the reduction water ratio.200910115351.6 number application documents disclose a kind of double oxygen treatment process, comprise mud lifting system, double oxygen digester, micro-filtration membrane module, four parts of aerating system.
In the mode that aerobic sigestion is handled, a kind of autothermal thermophilic aerobic digestion technology and device are arranged.The autothermal thermophilic aerobic digestion technology namely is under aerobic condition, from the thermophile bacteria of row filter with mud in organism (being mainly the microorganism of sewage disposal) be decomposed into carbonic acid gas, water, ammonia nitrogen, because the high temperature aerobic digestion reaction is thermopositive reaction, do not having under the situation of external heat source, the autonomous intensification, along with the carrying out of reaction, system temperature raises, and the digestion reaction temperature is up to 45 ℃
～65 ℃, and can maintain about 55 ℃ by the insulation measure, under this temperature condition, the thermophile bacteria activity is higher, and the ability of degradation of organic substances is stronger, and microorganism and organism in the mud are degraded gradually, most of organism is removed, thereby reaches the purpose that reduces the quality of mud own.Compare with the other biological treatment technology, the autothermal thermophilic aerobic digestion technology have the residence time short, start fast, less investment, stable, pathogen reduction is effective, be easy to advantage such as management.The sludge treatment that is suitable for middle or small sewage treatment.200410066202.2 number patent documentation discloses a kind of " high temperature aerobic digestion device for sludge ", by-pass valve control in the mud recycle system that this device comprises digester, be made of mud circulation tube, sludge circulation pump and mud discharge meter, the sludge aeration system, mud froth breaking pipe, mud liquid level observation tube and each pipeline that are made of aeration tube, aeration pump and gas meter etc.
The deficiency that existing high temperature aerobic digestion treatment technology exists is:
1, because the moisture percentage in sewage sludge after high temperature aerobic digestion is handled is up to 90%, for satisfying the requirement of sludge disposal, need carry out processed again, and in the high temperature aerobic digestion reaction process, because high temperature makes that the main extracellular polymeric viscosity of being made up of protein and polysaccharide that forms with the emiocytosis thing behind the cell rupture generation lysis is big, and the thermophile bacteria thalline presents high electronegativity, and cause the dewatering performance of sludge variation, cause the moisture percentage in sewage sludge after processed still higher, so the mud decrement DeGrain, and the moisture percentage in sewage sludge height is unfavorable for the follow-up disposal to mud;
2, in the high temperature aerobic digestion process, because the organonitrogen in the mud is converted into ammonia nitrogen, because of the reactor temperature height, nitrifier can not survive, and does not have nitrification, and the ammonia nitrogen concentration that sludge high temperature aerobic digestion produces is up to 1200mg/L, the release gas of part ammonia nitrogen after along with aeration is discharged, form gas with foreign flavor, influence environment, cause secondary pollution easily;
3, be present in the postdigestive mud owing to most ammonia-nitrogen, in follow-up processed process, then form the waste liquid that contains high ammonia nitrogen, being back to high ammonia nitrogen waste liquid after the Sewage treatment systems will influence the normal operation of Sewage treatment systems, cause the ammonia nitrogen index after the sewage disposal to be difficult to stably reach requirement.
Summary of the invention:
At the deficiencies in the prior art, the objective of the invention is to propose a kind of sewage sludge self-heating high-temperature aerobic treatment unit, when the present invention reduces the quality (volume) of mud itself by the autothermal thermophilic aerobic digestion processing, can improve or improve the dewatering performance of sludge after high temperature aerobic digestion is handled, improve the sludge dewatering treatment effect, thereby improve the mud decrement effect.
Technical scheme of the present invention comprises pre-concentration device 1, heat exchanger 2, autothermal thermophilic aerobic digestion reactor 3, denitrification reactor 4, sludge dehydration device 5 referring to Fig. 1;
The exit end of described pre-concentration device 1 is communicated with by first dredging tube 6 with the cold mud entrance end of heat exchanger 2, and first dredging tube 6 is provided with the first sludge pump 6a; The sludge outlet end is communicated with by second dredging tube 7 with autothermal thermophilic aerobic digestion reactor 3 after the intensification of described heat exchanger 2; The exit end of described autothermal thermophilic aerobic digestion reactor 3 is communicated with by the 3rd dredging tube 8 with the hot mud entrance end of heat exchanger 2, and the 3rd dredging tube 8 is provided with the second sludge pump 8a; The sludge outlet end is communicated with by the 4th dredging tube 9 with the entrance end of denitrification reactor 4 after the cooling of described heat exchanger 2; The exit end of denitrification reactor 4 is communicated with by output tube 10 with the entrance end of sludge dehydration device 5, and output tube 10 is provided with the 3rd sludge pump 10a.
Further be:
Be provided with peculiar smell treatment unit 11 and induced exhaust 12, induced exhaust 12 is provided with induced draft fan 12a, described autothermal thermophilic aerobic digestion reactor 3 inner chambers and denitrification reactor 4 inner chambers are communicated with the entrance end of induced exhaust 12 respectively, and the exit end of induced exhaust 12 is communicated with the entrance end of peculiar smell treatment unit 11.
Principle of work of the present invention is as follows:
The mud that sewage treatment process produces is after pre-concentration device 1 carries out preposition dehydration and concentrates, by first sludge pump 6a lifting and via entering self-heating high-temperature aerobic reactor 3 behind the heat exchanger 2, under the oxygen supply condition of the circulation stirring of the recycle system and aerating system, thermophile bacteria from row filter is that substrate is bred in a large number with the original microorganism in the mud and organism, make original microorganism cells generation lysis and be degraded, most of original microorganism and organism then are removed, and the generation carbonic acid gas, water, ammonia nitrogen and extracellular polymeric etc., the pH value raises, because the aerobic sigestion reaction is thermopositive reaction, system temperature raises, under heat-retaining condition, temperature can reach 55 ℃, and the pathogenic bacteria in the primary sludge is inactivated;
The mud that behind high temperature aerobic digestion, has comparatively high temps, by the second sludge pump 8a and the 3rd dredging tube 8, enter heat exchanger 2 by autothermal thermophilic aerobic digestion reactor 3 and carry out thermal energy exchange, the one, the temperature of reduction mud is to satisfy the temperature requirement that follow-up denitrification reaction is handled; The 2nd, reclaim heat energy, take full advantage of the heat energy that mud produces in the autothermal thermophilic aerobic digestion reaction process, the mud that enters autothermal thermophilic aerobic digestion reactor 3 is carried out preposition heat temperature raising, be beneficial to the steady running of autothermal thermophilic aerobic digestion reactor, and obtain good aerobic sigestion reaction effect;
Mud after heat exchanger 2 cooling enters through the 4th dredging tube 9 and to carry out denitrogenation processing in the denitrification reactor 4, and the ammonia nitrogen in high density that the aerobic sigestion reaction process is produced carries out the nitrification and denitrification reaction, and ammonia nitrogen is converted into nitrogen discharge; Simultaneously the organism such as extracellular polymeric of not degrading fully that produce in the autothermal thermophilic aerobic digestion reactor are further decomposed, simultaneously under the condition of denitrification reactor, the activity of thermophile bacteria is suppressed, and be in the endogenous respiration stage, reduced and contained electronegative material, to improve or to improve the dewatering of mud;
After denitrification reactor 4 denitrogenation processing and the mud that dewatering is improved, enter sludge dehydration device 5 by the 3rd sludge pump 10a and output tube 10 and carry out processed, the mud after the processed and waste liquid are then disposed separately.
By induced exhaust 12 and induced exhaust 12a, the ammonia nitrogen gas with foreign flavor that contains of autothermal thermophilic aerobic digestion reactor 3 and denitrification reactor 4 generations is collected, and after peculiar smell treatment unit 11 is removed peculiar smell, discharged.
Compared with the prior art, the present invention has following technique effect:
1, owing to be provided with denitrification reactor 4, carry out denitrification reaction by the mud after autothermal thermophilic aerobic digestion is handled, the ammonia nitrogen in high density that the aerobic sigestion treating processes is produced carries out the nitrification and denitrification reaction, and ammonia nitrogen is converted into nitrogen discharge; Simultaneously the organism such as extracellular polymeric of not degrading fully that produce in the autothermal thermophilic aerobic digestion reactor are further decomposed, simultaneously under the condition of denitrification reactor, the activity of thermophile bacteria is suppressed, and be in the endogenous respiration stage, reduced and contained electronegative material, to improve or to improve the dewatering of mud, improved the sludge dewatering treatment effect, thereby improve the mud decrement effect, and be conducive to follow-up sludge disposal.
2, because denitrification reactor 4 has effectively been removed the nitrogen ammonia that produces in the thermophilic digestion treating processes, avoid in the processed producing and contain the waste liquid of high ammonia nitrogen to the influence of Sewage treatment systems, be conducive to improve the processing efficiency of Sewage treatment systems.
3, owing to be provided with heat exchanger 2, pass through thermal energy exchange, the one, the temperature of reduction mud, satisfy follow-up denitrification reaction and handle required temperature requirement, the 2nd, reclaim heat energy, take full advantage of the heat energy that mud produces in the autothermal thermophilic aerobic digestion reaction process, the mud that enters autothermal thermophilic aerobic digestion reactor 3 is carried out preposition heat temperature raising, be conducive to keep the condition of high temperature of autothermal thermophilic aerobic digestion reactor, promote the steady running of aerobic reaction.
4, by set peculiar smell treatment unit 11, remove the peculiar smell that autothermal thermophilic aerobic digestion reactor 3 and denitrification reactor 4 produce, effectively reduce peculiar smell to the influence of environment, avoid producing secondary pollution, be conducive to environment protection.
Other technique effect that the present invention has will further specify in embodiment.
Description of drawings
Fig. 1 is the structural representation of technical solution of the present invention, is defined as Figure of abstract;
Fig. 2 is the structural representation of autothermal thermophilic aerobic digestion reactor 3;
Fig. 3 is the structural representation of denitrification reactor 4.
Embodiment
Referring to accompanying drawing.The present invention includes pre-concentration device 1, heat exchanger 2, autothermal thermophilic aerobic digestion reactor 3, denitrification reactor 4, sludge dehydration device 5;
The exit end of described pre-concentration device 1 is communicated with by first dredging tube 6 with the cold mud entrance end of heat exchanger 2, and first dredging tube 6 is provided with the first sludge pump 6a; The sludge outlet end is communicated with by second dredging tube 7 with autothermal thermophilic aerobic digestion reactor 3 after the intensification of described heat exchanger 2; The exit end of described autothermal thermophilic aerobic digestion reactor 3 is communicated with by the 3rd dredging tube 8 with the hot mud entrance end of heat exchanger 2, and the 3rd dredging tube 8 is provided with the second sludge pump 8a; The sludge outlet end is communicated with by the 4th dredging tube 9 with the entrance end of denitrification reactor 4 after the cooling of described heat exchanger 2; The exit end of denitrification reactor 4 is communicated with by output tube 10 with the entrance end of sludge dehydration device 5, and output tube 10 is provided with the 3rd sludge pump 10a.
Described pre-concentration device 1 adopts existing rotary drum mud thickner or machinery to accelerate thickner etc., and water ratio is suitably concentrated up to 99% mud, and the water ratio of mud is down to 93%
～95%, increase sludge concentration, be beneficial to improve the aerobic sigestion speed of response, make the heat release of sludge aerobic digestion reaction can produce corresponding high temperature, and reduce reactor volume relatively.
Autothermal thermophilic aerobic digestion reactor 3 is closed shell shape structure, referring to Fig. 2, is provided with digestion reaction aerating system 13, digestion reaction stirring system 14 and digestion reaction froth breaking mechanism 15; Digestion reaction aerating system 13 comprises the first gas blower 13a, the exit end of the first gas blower 13a connects pneumatic tube 13b, the pneumatic tube 13b the other end is communicated with the aeration pipe fitting 13c that is positioned at autothermal thermophilic aerobic digestion reactor 3 bottoms, and aeration pipe fitting 13c is provided with some solarization air caps; Digestion reaction stirring system 14 comprises the first recycle pump 14a, the first recycle pump 14a entrance end is connected with the end of tail pipe 14b, the other end of tail pipe 14b communicates with autothermal thermophilic aerobic digestion reactor 3 inner chambers, the first recycle pump 14a exit end connects back mud pipe 14c, the other end that returns mud pipe 14c is connected with the stirring pipe fitting 14d that is positioned at autothermal thermophilic aerobic digestion reactor 3, stirs the nozzle that pipe fitting 14d is provided with some flow-like mud; By the first recycle pump 14a the flow-like mud in the autothermal thermophilic aerobic digestion reactor 3 is delivered in the stirring pipe fitting 14d by returning mud pipe 14c, and by stirring the nozzle ejection on the pipe fitting 14d and the mud in the high temperature aerobic digestion reaction process being stirred, in service, stirring and the aeration of mud carried out simultaneously; Digestion reaction froth breaking mechanism 15 comprises froth breaking sludge pipe 15a, the exit end of froth breaking sludge pipe 15a is connected with the froth breaking pipe fitting 15b that is positioned at autothermal thermophilic aerobic digestion reactor 3 internal upper parts, froth breaking pipe fitting 15b is provided with the shower nozzle of some flow-like mud, in shown in Figure 2, the entrance end of froth breaking sludge pipe 15a is connected with the mud pipe 14c that returns of the first recycle pump 14a exit end, froth breaking sludge pipe 15a is provided with control valve 15c, in service, regular opening controlling valve 15c, flow-like mud namely enters froth breaking pipe fitting 15b, carries out froth breaking by the ejection of the shower nozzle on the froth breaking pipe fitting 15b.In the enforcement, autothermal thermophilic aerobic digestion shell of reactor and all external pipes are incubated processing.
Adopting existing high temperature aerobic digestion technology that the mud through heat exchanger 2 preposition heat temperature raisings is carried out digestion reaction handles.Mud in the autothermal thermophilic aerobic digestion reactor, stir with the aeration state under, the already present thermophile bacteria in mud Central Plains is substrate and a large amount of breeding with the microorganism in the active sludge and other organism with this understanding, become main dominant bacteria, do not need to add in addition special bacteria; Lysis takes place for the treatment of the microorganism cells of sewage in mud Central Plains under hot conditions, simultaneously under hot conditions, the thermophile bacteria activity is higher, the ability of degradation of organic substances is stronger, original microorganism cells and organism are degraded gradually, major part changes into carbonic acid gas, water, ammonia nitrogen, produces extracellular polymeric simultaneously; Experimental data shows, total solids minimizing 35% in the mud after mud stays for some time in autothermal thermophilic aerobic digestion reactor 3
～45%, the volatile organic matter composition reduces 50%
～60%.
Denitrification reactor 4 is closed shell shape structure, referring to Fig. 3, is provided with denitrification reaction aerating system 16, denitrification reaction stirring system 17 and denitrification reaction froth breaking mechanism 18.Described denitrification reaction aerating system 16 comprises the second gas blower 16a, and the second gas blower 16a exit end connects blast main 16b, and the blast main 16b the other end is connected with the aeration tube member 16c that is positioned at denitrification reactor 4 bottoms; Described denitrification reaction stirring system 17 comprises the second recycle pump 17a, the second recycle pump 17a entrance end connects suction pipe fitting 17b, sucking the pipe fitting 17b the other end communicates with the inner chamber of denitrification reactor 4, the second recycle pump 17a exit end connects back mud pipe fitting 17c, the exit end that returns mud pipe fitting 17c is connected with the stirring pipe member 17d that is positioned at denitrification reactor 4 bottoms, stirring pipe member 17d is provided with the nozzle of some flow-like mud, and described aeration tube member 16c is communicated with stirring pipe member 17d by some connectednesses 19; According to the operation needs, a kind of working order is, denitrification reaction aerating system 16 moves simultaneously with denitrification reaction stirring system 17, stirring mud in aeration gas and the stirring pipe member 17d mixes, make and stir mud and be the jet state and the mud in the denitrification reactor 4 are circulated stir and aeration, another kind of working order is only to move denitrification reaction stirring system 17, the denitrification reaction aerating system stops aeration, and the stirring mud in the stirring pipe member 17d is then separately to the stirring that circulates of the mud in the denitrification reactor 4; Described denitrification reaction froth breaking mechanism 18 comprises froth breaking mud pipe fitting 18a, froth breaking mud pipe fitting 18a exit end is connected with the froth breaking pipe component 18b that is positioned at denitrification reactor 4 internal upper parts, froth breaking pipe component 18b is provided with the shower nozzle of some flow-like mud, shown in Figure 3, the entrance end of froth breaking mud pipe fitting 18a is connected with the mud pipe fitting 17c that returns of the second recycle pump 17a exit end, and froth breaking mud pipe fitting 18a is provided with valve 18c; In service, regular open valve 18c, flow-like mud namely enters froth breaking pipe component 18b, carries out froth breaking by the ejection of the shower nozzle on the froth breaking pipe component 18b.In service, in the nitrated stage, mud stirs and aeration carries out simultaneously, in the denitrification stage, only stirs, not aeration.In concrete the enforcement, when adopting a denitrification reactor operation, above-mentioned two process alternate runs, when adopting two denitrification reactors, two denitrification reactors are alternate run then.
Denitrogenation is divided into two processes of nitrification and denitrification, after the mud temperature drops to needed scope, enter the interior mud of denitrification reactor under circulation stirring and aeration condition, under the effect of nitrifier, carry out nitration reaction, ammonia nitrogen is converted into nitrite and nitrate, the organism such as extracellular polymeric of degrading simultaneously and producing at the high-temperature aerobic nitrifying process in the mud, reduce the content of high viscosity substance in the mud, simultaneously under the condition of denitrification reactor, the activity of thermophile bacteria is suppressed, and be in the endogenous respiration stage, reduced and contained electronegative material, to improve or to improve the dewatering of mud; Stir, stop under the aeration condition in circulation, under the effect of denitrifying bacteria, nitrite and nitrate are converted into nitrogen, realize the removal of ammonia nitrogen.The optimum temps of denitrification reaction process is 30 ℃～35 ℃.Experimental data shows that behind denitrification reaction, the high ammonia nitrogen that high temperature aerobic digestion produces obtains degraded, and concentration can be down to 400mg-500mg/L.
Be provided with peculiar smell treatment unit 11 and induced exhaust 12, induced exhaust 12 is provided with induced draft fan 12a, described autothermal thermophilic aerobic digestion reactor 3 inner chambers and denitrification reactor 4 inner chambers are communicated with the entrance end of induced exhaust 12 respectively, and the exit end of induced exhaust 12 is communicated with the entrance end of peculiar smell treatment unit 11.In service, by induced draft fan 12a and induced exhaust 12, with sending into peculiar smell treatment unit 11 with the denitrification reactor 4 interior gas with foreign flavor that produce in the autothermal thermophilic aerobic digestion reactor 3, gas with foreign flavor is removed the purifying treatment of peculiar smell.Peculiar smell treatment unit 11 adopts conventional spray column and biofiltration tower clustered aggregates.
Other any distressed structure that various enforcement structures described in the specific embodiment of the invention reach technical solution of the present invention all belongs to protection scope of the present invention.
Claims (1)
1. sewage sludge self-heating high-temperature aerobic treatment unit comprises pre-concentration device (1), autothermal thermophilic aerobic digestion reactor (3), sludge dehydration device (5), it is characterized in that being provided with heat exchanger (2) and denitrification reactor (4);
The exit end of described pre-concentration device (1) is communicated with by first dredging tube (6) with the cold mud entrance end of heat exchanger (2), and first dredging tube (6) is provided with first sludge pump (6a);
The sludge outlet end is communicated with by second dredging tube (7) with autothermal thermophilic aerobic digestion reactor (3) after the intensification of described heat exchanger (2);
The exit end of described autothermal thermophilic aerobic digestion reactor (3) is communicated with by the 3rd dredging tube (8) with the hot mud entrance end of heat exchanger (2), and the 3rd dredging tube (8) is provided with second sludge pump (8a);
The sludge outlet end is communicated with by the 4th dredging tube (9) with the entrance end of denitrification reactor (4) after the cooling of described heat exchanger (2);
The exit end of described denitrification reactor (4) is communicated with by output tube (10) with the entrance end of sludge dehydration device (5), and output tube (10) is provided with the 3rd sludge pump (10a).
2, sewage sludge self-heating high-temperature aerobic treatment unit according to claim 1, it is characterized in that being provided with peculiar smell treatment unit (11) and induced exhaust (12), induced exhaust (12) is provided with induced draft fan (12a), described autothermal thermophilic aerobic digestion reactor (3) inner chamber and denitrification reactor (4) inner chamber are communicated with the entrance end of induced exhaust (12) respectively, and the exit end of induced exhaust (12) is communicated with the entrance end of peculiar smell treatment unit (11).
3, sewage sludge self-heating high-temperature aerobic treatment unit according to claim 2 is characterized in that denitrification reactor (4) has denitrification reaction aerating system (16), denitrification reaction stirring system (17) and denitrification reaction froth breaking mechanism (18).
4, sewage sludge self-heating high-temperature aerobic treatment unit according to claim 3 is characterized in that:
Described denitrification reaction aerating system (16) comprises second gas blower (16a), second gas blower (16a) exit end connects blast main (16b), and blast main (16b) the other end is connected with the aeration tube member (16c) that is positioned at denitrification reactor (4) bottom;
Described denitrification reaction stirring system (17) comprises second recycle pump (17a), second recycle pump (17a) entrance end connects suction pipe fitting (17b), sucking pipe fitting (17b) the other end communicates with the inner chamber of denitrification reactor (4), second recycle pump (17a) exit end connects back mud pipe fitting (17c), the exit end that returns mud pipe fitting (17c) is connected with the stirring pipe member (17d) that is positioned at denitrification reactor (4) bottom, and stirring pipe member (17d) is provided with some nozzles;
Described aeration tube member (16c) is communicated with stirring pipe member (17d) by some connectednesses (19);
Described denitrification reaction froth breaking mechanism (18) comprises froth breaking mud pipe fitting (18a), froth breaking mud pipe fitting (18a) exit end is connected with the froth breaking pipe component (18b) that is positioned at denitrification reactor (4) internal upper part, froth breaking pipe component (18b) is provided with some shower nozzles, froth breaking mud pipe fitting (18a) entrance end is connected with the mud pipe fitting (17c) that returns of second recycle pump (17a) exit end, and froth breaking mud pipe fitting (18a) is provided with valve (18c).
5, according to any sewage sludge self-heating high-temperature aerobic treatment unit of claim 1-4, its feature autothermal thermophilic aerobic digestion reactor (3) has digestion reaction aerating system (13), digestion reaction agitator (14) and digestion reaction froth breaking mechanism (15).
6, any sewage sludge self-heating high-temperature aerobic treatment unit according to claim 5 is characterized in that:
Described digestion reaction aerating system (13) comprises first gas blower (13a), the exit end of first gas blower (13a) connects pneumatic tube (13b), pneumatic tube (13b) the other end is communicated with the aeration pipe fitting (13c) that is positioned at autothermal thermophilic aerobic digestion reactor (3) bottom, and aeration pipe fitting (13c) is provided with some solarization air caps;
Described digestion reaction stirring system (14) comprises first recycle pump (14a), first recycle pump (14a) entrance end is connected with tail pipe (14b), the other end of tail pipe (14b) communicates with autothermal thermophilic aerobic digestion reactor (3) inner chamber, first recycle pump (14a) exit end connects back mud pipe (14c), return mud pipe (14c) the other end and be connected with the stirring pipe fitting (14d) that is positioned at autothermal thermophilic aerobic digestion reactor (3), stir pipe fitting (14d) and be provided with some nozzles;
Described digestion reaction froth breaking mechanism (15) comprises froth breaking sludge pipe (15a), the exit end of froth breaking sludge pipe (15a) is connected with the froth breaking pipe fitting (15b) that is positioned at autothermal thermophilic aerobic digestion reactor (3) internal upper part, froth breaking pipe fitting (15b) is provided with some shower nozzles, the entrance end of froth breaking sludge pipe (15a) is connected with the mud pipe (14c) that returns of first recycle pump (14a) exit end, and froth breaking sludge pipe (15a) is provided with control valve (15c).
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