CN105692899A - Efficient oxygen-enriched aeration method and efficient oxygen-enriched aeration system - Google Patents
Efficient oxygen-enriched aeration method and efficient oxygen-enriched aeration system Download PDFInfo
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- CN105692899A CN105692899A CN201610080537.2A CN201610080537A CN105692899A CN 105692899 A CN105692899 A CN 105692899A CN 201610080537 A CN201610080537 A CN 201610080537A CN 105692899 A CN105692899 A CN 105692899A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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Abstract
The invention belongs to the technical field of wastewater treatment and provides an efficient oxygen-enriched aeration method and an efficient oxygen-enriched aeration system.The efficient oxygen-enriched aeration method particularly includes that a plurality of sequentially adjacent aeration areas with or without partition plates arranged thereamong are controlled to interconvert and perform oxygen-enriched aeration or nitrogen-enriched aeration alternately by evenly-restricted controllers through electromagnetic valves.The efficient oxygen-enriched aeration system comprises a tank A and a tank O which are arranged sequentially, a tank A oxygen-enriched aeration group is arranged at the bottom of the tank A, two tank O oxygen-enriched aeration groups and two tank O nitrogen-enriched aeration groups are arranged at the bottom of the tank O sequentially from top to bottom are connected with gas making portions through the electromagnetic valves, and the electromagnetic valves are connected with the evenly-restricted controllers.The efficient oxygen-enriched aeration method and the efficient oxygen-enriched aeration system solve the technical problems that aeration heads in an aeration system in the prior art requires manual washing, and the whole aeration system is unreasonable in resource utilization, low in aeration efficiency, poor in aeration effect, non-uniform in aeration, poor in short-cut nitrogen removal effect and low in short-cut nitrogen removal degree.
Description
Technical field
The invention belongs to technical field of sewage, relate to a kind of without manual cleaning and the uniform limited efficient oxygen-enriched aeration method and system that multistage A/O and short-cut denitrification can be realized。
Background technology
Along with the expansion that growth in the living standard and Organic substance are applied, what Organic substance industry, agricultural or the domestic water such as rich Nitrogen-and Phosphorus-containing became that water body in lake pollutes one originates greatly。Organic enriching causes that algae and water and phytoplankton are increased；Aerobic bacteria that algae death produces and phytoplankton consume melts oxygen, anaerobe increasing number in water in a large number；Organic substance, under the effect of anaerobe, is secreted harmful toxins, is caused water quality deterioration。Consider from the growth and breeding angle restraining anaerobe, keep water melting oxygen concentration for keeping water body cleaning to have great significance。
At present, blast aeration and oxygen-enriched aeration it are divided into the mode of water body oxygenation。Blast aeration is mainly made up of air purifier, aerator and aeration head。The aeration head that oxygen-enriched aeration is delivered in Aeration tank by oxygen pipeline by oxygen generation system in situ preparation oxygen reacts, and because it supplies for pure oxygen, therefore when Aeration tank sludge concentration is significantly high, still keeps higher appearance oxygen concentration。In prior art; Aeration tank mud has finite concentration and is full of impurity, the micropore of aeration head, and the other micropore of grade often needs to carry out manual cleaning because of blocking; although the micro-pore diameter of corundum sintering aeration head is hundreds of micron, but still can be subject to the microbiological effect in mud and mud；And in prior art, the oxygen-enriched aeration of multistage A/O is each through being separated the A pond being sequentially arranged at intervals by dividing plate, O pond realizes, A pond is simply stirred, O pond is only by oxygen-enriched aeration, A pond is stirred being difficult to make it uniform, long lasting for aeration, O pond is because causing that aeration efficiency is low, weak effect, therefore the overall utilization of resources is unreasonable, and A pond and O pond are separated by dividing plate and are simply stirred in A pond in this kind of multistage A/O, whole wastewater treatment process can not realize short-cut denitrification, and control to promote that it realizes short-cut denitrification by water condition, its result is also unsatisfactory, therefore the short-cut denitrification degree of whole wastewater treatment process is still very low, corresponding oxygen demand can not get reducing with adding carbon amounts, thus aeration time is long needed for extending wastewater treatment, waste ample resources simultaneously。
Summary of the invention
The present invention proposes a kind of efficiently oxygen-enriched aeration method and system, the aeration head solved in prior art in aerating system needs manual cleaning, the whole aerating system utilization of resources is unreasonable, aeration efficiency is low, weak effect and uneven, the technical problem that short-cut denitrification weak effect degree is low。
The technical scheme is that and be achieved in that:
A kind of efficiently oxygen-enriched aeration method, specifically, adjacent successively and between be provided with or be not provided with several aerated space of dividing plate and controlled it by uniform constrained control device by electromagnetic valve and mutually change alternate intervals and carry out oxygen-enriched aeration or richness nitrogen aeration。
A kind of efficiently oxygen-enriched aeration system, including
The A pond set gradually and O pond, the bottom in described A pond is provided with A pond richness nitrogen aeration group, the bottom in described O pond is disposed with O pond oxygen-enriched aeration group and O pond richness nitrogen aeration group up and down, described O pond oxygen-enriched aeration group includes spaced oxygen-enriched aeration one group and oxygen-enriched aeration two groups, described O pond richness nitrogen aeration group includes spaced rich nitrogen aeration one group and rich nitrogen aeration two groups, described oxygen-enriched aeration one group, described oxygen-enriched aeration two groups, described rich nitrogen aeration one group, rich nitrogen aeration two groups is connected with gas part processed each through electromagnetic valve, described electromagnetic valve is connected with uniform constrained control device。
As further technical scheme, described A pond richness nitrogen aeration group, described oxygen-enriched aeration one group, described oxygen-enriched aeration two groups, described rich nitrogen aeration one group, described rich nitrogen aeration two groups all include aerator, and described aerator includes the aeration head that several levels are arranged in order。
As further technical scheme, described aeration head is tubulose, and one end is closed, the screw thread that the other end is arranged by internal diameter is connected with described pipeline, and described aeration head is macromolecular material sintering aeration head, it is evenly distributed with micropore, aperture be sized to 1～100 micron。
As further technical scheme, air machinery that described gas part processed includes being sequentially connected with, air accumulator, cooling driers, oxygenerator, described oxygenerator is connected to oxygen tank and nitrogen pot, described oxygen tank is all connected with through oxygen pressure reducing valve and described oxygen-enriched aeration one group, described oxygen-enriched aeration two groups, and described nitrogen pot is all connected with described rich nitrogen aeration one group, rich nitrogen aeration two groups through nitrogen air relief valve。
As further technical scheme, the motor of described air machinery is frequency conversion motor, described built in gas tank is equipped with pressure transducer, is provided with oxygen concentration sensor in described O pond, and described air machinery, described pressure transducer, described oxygen concentration sensor are all connected with air machinery controller。
As further technical scheme, described oxygenerator is molecular sieve pressure change adsorption oxygenerator。
As further technical scheme, described electromagnetic valve is parallel with hand-operated valve。
As further technical scheme, between described cooling driers and described oxygenerator, it is additionally provided with air cushioning tank。
Being provided with filter as further technical scheme, described air accumulator porch or exit, described cooling driers exit, described oxygenerator porch and described oxygen tank porch, described cooling driers exit is additionally provided with high-efficiency degreasing device。
Use principle of the present invention and having the beneficial effect that
1, when the present invention works, uniform constrained control device controls electromagnetic valve and is turned on and off, electromagnetic valve is divided into many groups, often organize and control A pond richness nitrogen aeration group respectively, oxygen-enriched aeration one group, oxygen-enriched aeration two groups, rich nitrogen aeration one group, being turned on and off of rich two groups of aerations of nitrogen aeration, wherein the effect of the A pond richness nitrogen aeration group in A pond is to pass into nitrogen whole A pond is stirred, this process is possible not only to fully utilize the by-product nitrogen in oxygen preparation, simultaneously as the nitrogen that aeration goes out can be exposed by the hole of micron level, may also reach up more efficient anaerobic treatment effect compared with the alr mode of stirring vane。O pond oxygen-enriched aeration group and O pond richness nitrogen aerated components two-layer are arranged on the bottom in O pond, wherein, be positioned at the oxygen-enriched aeration one group of the O pond oxygen-enriched aeration group on upper strata, oxygen-enriched aeration is hocketed at two groups of intervals of oxygen-enriched aeration, be positioned at the rich nitrogen aeration one group of the O pond richness nitrogen aeration group of lower floor, rich nitrogen aeration is hocketed at rich two groups of intervals of nitrogen aeration, so that A pond is divided into the region at interval to hocket oxygen-enriched aeration and rich nitrogen aeration, such that it is able to realize compared with prior art more efficient uniform limited multistage A/O, advantageously being performed continuously in short-cut denitrification。
2, rich nitrogen aeration one group, rich nitrogen aeration two groups another one effect be pointed to the oxygen-enriched aeration one group on its upper strata, oxygen-enriched aeration two groups is carried out, while not increasing energy resource consumption, not only save and waste time and energy and the manual cleaning of weak effect, real-time cleaning can also be reached simultaneously, enable to be positioned at the oxygen-enriched aeration one group on upper strata, the oxygen-enriched aeration process whole process of oxygen-enriched aeration two groups reaches micron level, so that the antimicrobial treatment process of sewage is more efficient。
3, the aeration head in the aeration head present invention in the present invention, because itself adopts plastic material, therefore it adds and just can only be processed as siphunculus unlike corundum material man-hour, then one end is clogged by stopper again, the other end is threaded again through connector, the sintering aeration head of plastic material, one end can be machined directly to close, the other end is threaded and is connected with the connecting line in system, therefore overall structure is simple, it is prone to processing and failure rate is low, oxygen that exposure enters in water or nitrogen can be made to expose from the micropore of micron level when aeration simultaneously, gas can be made to dissolve in pending sewage fully, so that microorganism in reaction tank can more quickly and fully sewage is processed, such that it is able to be greatly improved response rate and the extent of reaction。
Oxygen that exposure enters in water or nitrogen can be made to expose from the micropore of micron level when aeration, gas can be made to dissolve in pending sewage fully, so that microorganism in reaction tank can more quickly and fully sewage is processed, such that it is able to be greatly improved response rate and the extent of reaction。
4, in gas part processed, oxygen and the nitrogen that oxygenerator produces can be stored by the oxygen tank of particular design and nitrogen pot; can be implemented in guarantee O pond oxygen-enriched aeration group and O pond richness nitrogen aeration group continues under non-stop-machine premise; air machinery only needs the time that work reduces by half; thus greatly reducing power consumption, thus improving sewage disposal in practical situation too high due to power consumption and the present situation of the unsustainable operation of equipment that is that occur。
5, air machinery is designed as frequency conversion motor, and increase pressure transducer and oxygen concentration sensor can further reduce power consumption, when pressure transducer detects the force value in air accumulator more than 7atm, air machinery quits work, when force value is lower than 7atm, air machinery is started working, oxygen concentration sensor detects when the oxygen concentration in O pond exceedes setting value simultaneously, air machinery quits work, when oxygen concentration is lower than setting value, air machinery is started working, the air pressure of 4atm in oxygen tank and nitrogen pot can be carried out reducing pressure and voltage stabilizing by oxygen pressure reducing valve and nitrogen air relief valve, thus by the gas pressure of aeration continually and steadily in optimum, properly stable pressure makes aeration effect more uniformly and save certain energy resource consumption, designed by this, the power consumption of whole system can be reduced 30%, so that the carrying out that sewage disposal process is more lasting。
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation。
Fig. 1 is present configuration schematic diagram；
Fig. 2 is A pond and O pond plan structure schematic diagram in the present invention；
Fig. 3 is aeration head structural representation in the present invention；
Fig. 4 is control structure wire schematic diagram of the present invention；
Fig. 5 is air machinery control structure wire schematic diagram in the present invention；
In figure: 1-A pond, 2-O pond, 3-A pond richness nitrogen aeration group, 4-O pond oxygen-enriched aeration group, 41-oxygen-enriched aeration one group, 42-oxygen-enriched aeration two groups, 5-O pond richness nitrogen aeration group, 51-richness nitrogen aeration one group, 52-richness nitrogen aeration two groups, 6-electromagnetic valve, 7-gas part, 71-air machinery, 72-air accumulator, 73-cooling driers, 74-oxygenerator, 75-oxygen tank, 76-nitrogen pot, 77-oxygen pressure reducing valve, 78-nitrogen air relief valve, 79-pressure transducer, the uniform constrained control device of 8-, 80-air machinery controller, 81-oxygen concentration sensor, 82-air cushioning tank, 9-aerator, 91-aeration head, 92-micropore。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
As shown in Fig. 1～Fig. 5, a kind of efficiently oxygen-enriched aeration method that the present invention proposes, it is specially
Adjacent successively and between be provided with or be not provided with several aerated space of dividing plate and controlled it by uniform constrained control device 8 by electromagnetic valve 6 and mutually change alternate intervals and carry out oxygen-enriched aeration or rich nitrogen aeration。
The present invention also proposes a kind of efficiently oxygen-enriched aeration system, including
The A pond 1 set gradually and O pond 2, the bottom in A pond 1 is provided with A pond richness nitrogen aeration group 3, the bottom in O pond 2 is disposed with O pond oxygen-enriched aeration group 4 and O pond richness nitrogen aeration group 5 up and down, O pond oxygen-enriched aeration group 4 includes spaced oxygen-enriched aeration one group 41 and oxygen-enriched aeration two group 42, O pond richness nitrogen aeration group 5 includes spaced rich nitrogen aeration one group 51 and rich nitrogen aeration two group 52, oxygen-enriched aeration one group 41, oxygen-enriched aeration two group 42, rich nitrogen aeration one group 51, rich nitrogen aeration is connected with gas part 7 processed each through electromagnetic valve 6 for two group 52, electromagnetic valve 6 is connected with uniform constrained control device 8。
When the present invention works, uniform constrained control device 8 controls electromagnetic valve 6 and is turned on and off, electromagnetic valve 6 is divided into many groups, often organize and control A pond richness nitrogen aeration group 3 respectively, oxygen-enriched aeration one group 41, oxygen-enriched aeration two group 42, rich nitrogen aeration one group 51, being turned on and off of rich two group of 52 aeration of nitrogen aeration, wherein the effect of the A pond richness nitrogen aeration group 3 in A pond 1 is to pass into nitrogen whole A pond 1 is stirred, this process is possible not only to fully utilize the by-product nitrogen in oxygen preparation, simultaneously as the nitrogen that aeration goes out can be exposed by the hole of micron level, may also reach up more efficient anaerobic treatment effect compared with the alr mode of stirring vane。O pond oxygen-enriched aeration group 4 and O pond richness 5 points of two-layers of nitrogen aeration group are arranged on the bottom in O pond 2, wherein, be positioned at the oxygen-enriched aeration one group 41 of the O pond oxygen-enriched aeration group 4 on upper strata, oxygen-enriched aeration is hocketed at two group of 42 interval of oxygen-enriched aeration, be positioned at the rich nitrogen aeration one group 51 of the O pond richness nitrogen aeration group 5 of lower floor, rich nitrogen aeration is hocketed at rich two group of 52 interval of nitrogen aeration, so that A pond 1 is divided into the region at interval to hocket oxygen-enriched aeration and rich nitrogen aeration, such that it is able to realize compared with prior art more efficient uniform limited multistage A/O, advantageously being performed continuously in short-cut denitrification。
Rich nitrogen aeration one group 51, rich nitrogen aeration two group 52 another one effect be pointed to the oxygen-enriched aeration one group 41 on its upper strata, oxygen-enriched aeration is carried out for two group 42, while not increasing energy resource consumption, not only save and waste time and energy and the manual cleaning of weak effect, real-time cleaning can also be reached simultaneously, enable to be positioned at the oxygen-enriched aeration one group 41 on upper strata, the oxygen-enriched aeration process whole process of oxygen-enriched aeration two group 42 reaches micron level, so that the antimicrobial treatment process of sewage is more efficient。
Further, A pond richness nitrogen aeration group 3, oxygen-enriched aeration one group 41, oxygen-enriched aeration two group 42, rich nitrogen aeration one group 51, rich nitrogen aeration all include aerator 9 for two group 52, and aerator 9 includes the aeration head 91 that several levels are arranged in order。
Further, aeration head 91 is tubulose, one end close, the screw thread that the other end is arranged by internal diameter is connected with pipeline, and aeration head 91 be macromolecular material sintering aeration head, it is evenly distributed with micropore 92, aperture be sized to 1～100 micron。
Aeration head 91 in the present invention, because itself adopts plastic material, therefore it adds and just can only be processed as siphunculus unlike corundum material man-hour, then one end is clogged by stopper again, the other end is threaded again through connector, the sintering aeration head of plastic material, one end can be machined directly to close, the other end is threaded and is connected with the connecting line in system, therefore overall structure is simple, it is prone to processing and failure rate is low, oxygen that exposure enters in water or nitrogen can be made to expose from the micropore 92 of micron level when aeration simultaneously, gas can be made to dissolve in pending sewage fully, so that microorganism in reaction tank can more quickly and fully sewage is processed, such that it is able to be greatly improved response rate and the extent of reaction。
Further, air machinery 71 that gas part 7 processed includes being sequentially connected with, air accumulator 72, cooling driers 73, oxygenerator 74, oxygenerator 74 is connected to oxygen tank 75 and nitrogen pot 76, oxygen tank 75 is all connected with for two group 42 through oxygen pressure reducing valve 77 and oxygen-enriched aeration one group 41, oxygen-enriched aeration, and nitrogen pot 76 is all connected with for two group 52 with rich nitrogen aeration one group 51, rich nitrogen aeration through nitrogen air relief valve 78。
In gas part 7 processed, oxygen and the nitrogen that oxygenerator 74 produces can be stored by the oxygen tank 75 of particular design and nitrogen pot 76; can be implemented in guarantee O pond oxygen-enriched aeration group 4 and O pond richness nitrogen aeration group 5 continues under non-stop-machine premise; air machinery 71 only needs the time that work reduces by half; thus greatly reducing power consumption, thus improving sewage disposal in practical situation too high due to power consumption and the present situation of the unsustainable operation of equipment that is that occur。
Further, the motor of air machinery 71 is frequency conversion motor, is provided with in pressure transducer 79, O pond 2 and is provided with oxygen concentration sensor 81 in air accumulator 72, and air machinery 71, pressure transducer 79, oxygen concentration sensor 81 are all connected with air machinery controller 80。
Air machinery 71 can be air compressor machine, it is designed as frequency conversion motor, and the purpose increasing pressure transducer 79 and oxygen concentration sensor 81 is for further reducing power consumption, when pressure transducer 79 detects the force value in air accumulator 72 more than 7atm, air machinery 71 quits work, when force value is lower than 7atm, air machinery 71 is started working, oxygen concentration sensor 81 detects when the oxygen concentration in O pond 2 exceedes setting value simultaneously, air machinery 71 quits work, when oxygen concentration is lower than setting value, air machinery 71 is started working, the air pressure of 4atm in oxygen tank 75 and nitrogen pot 76 can be carried out reducing pressure and voltage stabilizing by oxygen pressure reducing valve 77 and nitrogen air relief valve 78, thus by the gas pressure of aeration continually and steadily in optimum, properly stable pressure makes aeration effect more uniformly and save certain energy resource consumption, designed by this, power consumption can be reduced 30%, so that the carrying out that sewage disposal process is more lasting。
Further, oxygenerator 74 is molecular sieve pressure change adsorption oxygenerator。
Further, electromagnetic valve 6 is parallel with hand-operated valve。
Further, air cushioning tank 82 it is additionally provided with between cooling driers 73 and oxygenerator 74。
Further, air accumulator 72 porch or exit, cooling driers 73 exit, oxygenerator 74 porch and oxygen tank 75 porch are provided with filter (not shown), and cooling driers 73 exit is additionally provided with high-efficiency degreasing device (not shown)。
O pond oxygen-enriched aeration group 4 and O pond richness nitrogen aeration group 5 in the present invention need all to can be designed as annular or matrix arrangement according to practical situation, thus meeting different aeration demands, thus realizing the short-cut denitrification oxygen-enriched aeration process of diversified multistage A/O formula。
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (10)
1. an efficient oxygen-enriched aeration method, it is characterized in that, adjacent successively and between be provided with or be not provided with several aerated space of dividing plate and controlled it by uniform constrained control device (8) by electromagnetic valve (6) and mutually change alternate intervals and carry out oxygen-enriched aeration or rich nitrogen aeration。
2. one kind realizes the efficient oxygen-enriched aeration system of efficient oxygen-enriched aeration method described in claim 1, including the A pond (1) set gradually and O pond (2), it is characterized in that, the bottom of described A pond (1) is provided with A pond richness nitrogen aeration group (3), the bottom of described O pond (2) is disposed with O pond oxygen-enriched aeration group (4) and O pond richness nitrogen aeration group (5) up and down, described O pond oxygen-enriched aeration group (4) includes spaced oxygen-enriched aeration one group (41) and oxygen-enriched aeration two groups (42), described O pond richness nitrogen aeration group (5) includes spaced rich nitrogen aeration one group (51) and rich nitrogen aeration two groups (52), described oxygen-enriched aeration one group (41), described oxygen-enriched aeration two groups (42), described rich nitrogen aeration one group (51), rich nitrogen aeration two groups (52) is connected with gas part (7) processed each through electromagnetic valve (6), described electromagnetic valve (6) is connected with uniform constrained control device (8)。
3. the efficient oxygen-enriched aeration system of one according to claim 2, it is characterized in that, described A pond richness nitrogen aeration group (3), described oxygen-enriched aeration one group (41), described oxygen-enriched aeration two groups (42), described rich nitrogen aeration one group (51), described rich nitrogen aeration two groups (52) all include aerator (9), and described aerator (9) includes the aeration head (91) that several levels are arranged in order。
4. the efficient oxygen-enriched aeration system of one according to claim 3, it is characterized in that, described aeration head (91) is tubulose, one end is closed, the screw thread that the other end is arranged by internal diameter is connected with described pipeline, and described aeration head (91) is macromolecular material sintering aeration head, it is evenly distributed with micropore (92), aperture be sized to 1～100 micron。
5. the efficient oxygen-enriched aeration system of one according to claim 2, it is characterized in that, described gas part (7) processed includes the air machinery (71) being sequentially connected with, air accumulator (72), cooling driers (73), oxygenerator (74), described oxygenerator (74) is connected to oxygen tank (75) and nitrogen pot (76), described oxygen tank (75) is through oxygen pressure reducing valve (77) and described oxygen-enriched aeration one group (41), described oxygen-enriched aeration two groups (42) is all connected with, described nitrogen pot (76) is through nitrogen air relief valve (78) and described rich nitrogen aeration one group (51), rich nitrogen aeration two groups (52) is all connected with。
6. the efficient oxygen-enriched aeration system of one according to claim 2, it is characterized in that, the motor of described air machinery (71) is frequency conversion motor, pressure transducer (79) it is provided with in described air accumulator (72), being provided with oxygen concentration sensor (81) in described O pond (2), described air machinery (71), described pressure transducer (79), described oxygen concentration sensor (81) are all connected with air machinery controller (80)。
7. the efficient oxygen-enriched aeration system of one according to claim 2, it is characterised in that described oxygenerator (74) is molecular sieve pressure change adsorption oxygenerator。
8. the efficient oxygen-enriched aeration system of one according to claim 2, it is characterised in that described electromagnetic valve (6) is parallel with hand-operated valve。
9. the efficient oxygen-enriched aeration system of one according to claim 5, it is characterised in that be additionally provided with air cushioning tank (82) between described cooling driers (73) and described oxygenerator (74)。
10. the efficient oxygen-enriched aeration system of one according to claim 9, it is characterized in that, described air accumulator (72) porch or exit, described cooling driers (73) exit, described oxygenerator (74) porch and described oxygen tank (75) porch are provided with filter, and described cooling driers (73) exit is additionally provided with high-efficiency degreasing device。
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