CN107500403A

CN107500403A - Revolve plug-flow submerged aerobic biofilter

Info

Publication number: CN107500403A
Application number: CN201710690929.5A
Authority: CN
Inventors: 谢绍舜; 谢奕民
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-14
Filing date: 2017-08-14
Publication date: 2017-12-22

Abstract

One kind rotation plug-flow submerged aerobic biofilter, pond body are followed successively by guiding region and rotation plug-flow reaction zone from front to back, and twoth area are separated by dividing plate, and dividing plate has gap with bottom of pond；It is provided with sewage inlet in guiding region, the gap of dividing plate and bottom of pond is outlet of sewer；Rotation plug-flow reaction zone is followed successively by aeration layer, reaction zone packing layer from the bottom to top；The bottom of aeration layer is provided with gas distribution perforated pipe, and several qi-emitting holes are offered on body；It is hung with elastic filler in reaction zone packing layer, intensive in elastic filler to be provided with more attachment filaments, the surface of attachment filament is attaching surface, and it is delivery port to adhere to propagation rear for aerobic bacteria.Compared to existing technologies, the present invention can produce density current effect, sewage is set to form eddy flow state, current iterate through reaction zone packing layer haptoreaction just as spiral shape promotes, double effects with biomembrance process and activated sludge process, not only to the high treating effect of sewage, and it is stable, and operational administrative is simple.

Description

Revolve plug-flow submerged aerobic biofilter

Technical field

The present invention relates to environment water treatment field, and in particular to one kind rotation plug-flow submerged aerobic biofilter, the filter tank For handling trade effluent or sanitary sewage.

Background technology

Submerged bacteria filter and the main difference in other biological filter tank are：It is submerged in filter tank full of sewage, filtrate The neutralization of sewage uses artificial offering oxygen way.Specifically, submerged bacteria filter has the characteristics that：

（1）Among the filler grown for microorganism set is all submerged in sewage, equivalent to a kind of biology being immersed in sewage Filter tank, hence obtain one's name " submerged bacteria filter "；

（2）Using the blast aeration method similar to aeration tank, there is provided microorganism（Aerobic bacteria, aerobic amphimicrobe）Oxidation of organic compounds Required oxygen amount, and there is certain stirring and immixture, because it inhabites breeding equivalent to the addition of for microorganism The aeration tank of filler, so the contact blast aeration tank that is otherwise known as；

（3）Purification sewage relies primarily on the effect of the biomembrane on filler, but is remained in pond in finite concentration similar to activated sludge The biomembrance process processing structures of method feature, therefore it combines the effect of both aeration tank and biofilter.

Because submerged bacteria filter has These characteristics, therefore in the small-sized sanitary sewage in China and Industrial Wastewater Treatment Application is obtained.Generally speaking, submerged bacteria filter have volumetric loading is high, the residence time is short, organic matter removal effect is good, The advantages that operational management is simply and floor space is small, but if designing or running improper, easily causes filter clogging.

To sum up, blast aeration submerged bacteria filter, there is biomembrance process and activated sludge process double action and effect, but There is also problems with：

First, in sewage disposal, current flow from bottom to top almost vertically, sewage water outlet after packing layer is flowed through.This biography It is short current shape journey to be present in the up flow type processing of system（Generally only more than 3 meters）, water outlet the problem of producing short circuit in the side in pond, to dirt Water treatment efficiency brings adverse effect；

2nd, blast aerator installation site is in larger distance with bottom of pond close to packing layer bottom, is easily caused the feelings of bottom of pond deposition Condition occurs；

3rd, it is not perfect enough to flood biofilter structural form for up flow type, small-sized organic sewage processing is applicable only to, big-and-middle It is difficult to promote in the sewage disposal of type scale.

Therefore, how to solve above-mentioned the shortcomings of the prior art, become as the problem of the invention to be researched and solved.

The content of the invention

It is an object of the invention to provide one kind to revolve plug-flow submerged aerobic biofilter.

To reach above-mentioned purpose, the technical solution adopted by the present invention is：

One kind rotation plug-flow submerged aerobic biofilter, including at least one unit for treating water, the unit for treating water include one Pond body, the inner space that the pond body is formed are followed successively by guiding region and revolve plug-flow reaction zone from front to back along its length, and two Separated between area by a dividing plate, and the dividing plate and the bottom of the pond body have a gap；Wherein,

A sewage inlet is provided with the guiding region, the dividing plate and the gap of the pond body bottom go out for the sewage of the guiding region Mouthful；Sewage enters guiding region by the sewage inlet, is pushed backward via the outlet of sewer into the rotation plug-flow reaction The lower section in area；

Short transverse of the rotation plug-flow reaction zone along pond body divides into aeration layer and reaction zone packing layer successively from the bottom to top； The sewage through push, by the guiding region outlet of sewer rearwards into it is described rotation plug-flow reaction zone aeration layer, and after The reaction zone packing layer is flowed up through while continuous flowing backward, the delivery port after processing above pond body rear end goes out Water；Wherein,

Length direction of the bottom of the aeration layer along pond body is horizontally disposed an at least gas distribution perforated pipe；The gas distribution perforation The connection of Guan Yuyi air intlets is set, the air containing oxygen is imported into the aeration layer；And the gas distribution perforated pipe Body on be spaced apart be provided with several qi-emitting holes along its length, each qi-emitting hole towards gas distribution perforate tube side part it is oblique under Fang Kaishe；When the gas distribution perforated pipe is one, gas distribution perforated pipe is located at the centre position of the pond body bottom, and apart from pond The side wall of body has a distance, to form an eddy flow state mixing wastewater with air stream；When the gas distribution perforated pipe is more, each gas distribution is worn Hole pipe is parallel and is arranged at intervals, and the gas distribution perforated pipe of both sides has a distance apart from the side wall of pond body, and the eddy flow state air water mixes Interflow is formed between adjacent two gas distributions perforated pipe and between gas distribution perforated pipe and the side wall of pond body；Working condition in filter tank Under, from the cross section angle of the pond body, mixing wastewater with air stream of the top formed with rising of the gas distribution perforated pipe, and phase Mixing wastewater with air stream formed with decline between adjacent two gas distribution perforated pipes and between gas distribution perforated pipe and the side wall of pond body, rising Mixing wastewater with air stream and the mixing wastewater with air stream of decline are through the reaction zone packing layer and the aeration layer, both common structures Into the eddy flow state mixing wastewater with air stream；

Elastic filler is hung with the reaction zone packing layer, the elastic filler is intensive to be filled in the reaction zone packing layer In, and relatively described pond body positioning；Wherein, the elastic filler is made up of multiple strip fillers for being easy to mushroom to adhere to, this Shape filler includes a strip main body, and along its length and intensive more attachments are provided with towards extending around in the strip main body Silk, the surface of each attachment filament is attaching surface, and the aerobic bacteria attachment during attaching surface water supply is flowed is bred.

Relevant content in above-mentioned technical proposal is explained as follows：

1. in such scheme, " obliquely downward of each qi-emitting hole towards gas distribution perforation tube side part opens up ", form each gas distribution The outlet air-flow in hole produces disturbance and gas-vapor mix to the current of the bottom of pond.

2. in such scheme, the trend of the gas distribution perforated pipe is consistent with pond body length direction, therefore is filled when in pond body After water, worked by opening air blower, gas distribution perforated pipe is started outlet, the water in pond body will be produced due to density current effect Multiple eddy flow state mixing wastewater with air streams；When pond body formally starts sewage treatment works, i.e. sewage is anti-into rotation plug-flow via guiding region When answering area, the potential energy by sewage is kinetic energy, raw thrust of being miscarried to original eddy flow state mixing wastewater with air, forms rotation backward The mixing wastewater with air stream of plug-flow state, until outlet water at tail end.

3. in such scheme, the dividing plate between guiding region and rotation plug-flow reaction zone has a gap apart from bottom of pond, passes through The design in the gap, the sewage for revolving plug-flow reaction zone to entering produce a thrust, and the thrust contributes to sewage equably to pass It is handed in whole rotation plug-flow reaction zone；

Simultaneously as the multiple eddy flow state air waters being originally formed in rotation plug-flow reaction zone can be mixed by the effect of the thrust Plug-flow effect backward is played at interflow, and each eddy flow state mixing wastewater with air stream is affected by it can be while itself spins upside down backward It is mobile, so as to form the mixing wastewater with air stream of a rotation plug-flow state backward, so as to contribute to sewage, air with revolving in plug-flow reaction zone Elastic filler carry out sufficiently contact, mix.

4. in such scheme, the aeration layer extends forwardly into the bottom of the guiding region.It is unobstructed to be aerated the full pond of layer, is easy to Bottom of pond Pipe installing is with safeguarding.

5. in such scheme, short transverse of the guiding region along pond body divide into successively from the bottom to top the aeration layer, Guiding region packing layer and water conservancy diversion water-yielding stratum；The elastic filler is hung with the guiding region packing layer.Air water convection current passes through Also there is biofilm contact reagentia during the packing layer of guiding region.

Elastic filler in guiding region can be positioned in active filler frame, it may be necessary to sling, made guiding region as perpendicular To passage, it is easy to the drawing water of filter tank, Pipe installing and maintenance.

6. in such scheme, the positioning method of the relatively described pond body of the elastic filler can be suspended at the top of pond body, Can also be fixedly arranged on pond body sidepiece etc..

7. in such scheme, by the design of more attachment filaments, the described attached of the single elastic filler can be significantly increased Surface, is advantageous to produce more dense biomembrane, lifts biochemical reaction effect.

8. in such scheme, the air intlet can be opened at least in a side wall or from pond body of pond body Top access a gas distribution supply air line gas outlet.

9. in such scheme, by " obliquely downward of each qi-emitting hole towards gas distribution perforation tube side part opens up ", set whereby Count, the current of pond body bottom can be disturbed after air ejection qi-emitting hole, prevent sludge settling from accumulating；The qi-emitting hole tiltedly sets angle Preferably 45 ° of degree, and each qi-emitting hole cross arrangement.

10. in such scheme, in addition to a gas distribution supply air line, the gas distribution supply air line is by a gas distribution house steward and Duo Gen cloth Gas branch pipe connects and composes；

Wherein, the gas distribution house steward connects the air intlet, and horizontally disposed in the top of the pond body；The cloth Gas branch pipe has more, each gas distributionbranch pipe（By with gas control valve）The gas distribution house steward is connected, and each gas distributionbranch pipe is downward The bottom for stretching into the pond body connects with the gas distribution perforated pipe.

11. in such scheme, comprising two unit for treating water, two unit for treating water with the width of pond body it is horizontal and It is bonded side by side, into being integral；Wherein, the binding face of two unit for treating water is a partition wall, the partition wall and the pond body Bottom has a gap, and the aeration layer for forming the two unit for treating water pond bodies is interconnected.

12. in such scheme, aerobic biochemical of the invention belongs to a link of sewage disposal, the sewage disposal is whole Link includes：Pretreatment, anaerobic biological, aerobic biochemical, materializing strategy and end advanced treating.

The operation principle of the present invention is as follows：

A kind of rotation plug-flow submerged aerobic biofilter of the invention, is sewage disposal using aerobic treatment organic sewage Extremely important link in engineering.The active sludge of aerobic treatment and the class of biomembrance process two, different type, construction are each Different, key of the invention is to construct good microorganism（Aerobic bacteria, aerobic amphimicrobe）The environment of existence and procreation, there is provided give The nutrient that Institute of Micro-biology needs（Organic matter in sewage）, while the oxygen needed for microorganism adsorption decomposing organic matter is provided（By air blast The air that machine force feed comes）, good processing environment is built, obtains preferable treatment effect, is the target that the present invention researches and develops.

During present invention processing sewage, sewage from bottom to top, while flows from front to back, in the presence of ascending air, shape Into rotary-push type current；Therefore, the present invention can accomplish in limited space, make lengthened stroke of the sewage in pond, will not be short-circuit, Mixing to sewage, oxygen and aerobic bacteria fully creates advantage；The present invention have concurrently activated sludge process and biomembrance process this Two kinds of processing functions, while the shortcomings that overcome two kinds of processing modes；For traditional activated sludge process, due in filter tank Activated sludge will not go out pond body with a large amount of overflows of the process of processing, retained activated sludge, also eliminate activity The backflow link of sludge（The link that flows back is without oxygen supply）, therefore, aerobic microbiological（Aerobic bacteria）All the time in the sufficient condition of oxygen supply Lower existence procreation；For traditional biomembrance process, due to entering in the form with submerged filter tank, and using forward lower part Water, the water outlet of rear top, by producing the mixing wastewater with air stream of rotation plug-flow state backward, sewage and bubble contact with filler repeatedly, Therefore the problem of overcoming short sewage stroke existing for protozoa embrane method, sewage flow direction easy " short circuit "；Because the present invention has work concurrently Property sludge and the advantages of both processing methods of biomembrance process, therefore the disposal ability of the present invention is strong, can carry out large-scale Sewage disposal, sewage load is big in the unit interval, and the processing time is short that same sewage load needs；

The present invention installs gas distribution perforated pipe by the aeration layer in bottom of pond, and 45 degree of qi-emitting hole on gas distribution perforated pipe intersects downwards row Row, and elastic filler is installed in reaction zone packing layer；After sewage is filled in pond, drive air blower and supplied to gas distribution perforated pipe, Due to the small rising of band air water fluid capacitance weight, the not sparkling water capacity is great to flowing down, therefore produces density current effect, forms eddy flow state； When sewage enters rotation plug-flow reaction zone through guiding region Hou Chi bottoms, current are filled out just as spiral shape propulsion iterates through reaction zone Bed of material haptoreaction, until the muddy water mixed solution after overflow discharge processing, mud-water separation is carried out from secondary sedimentation tank is flowed into.

Main advantages of the present invention：

1st, guiding region have the function that uniformly with rectification, after sewage enters guiding region, floating object in sewage because density is smaller, The spillwag chute of guiding region will be floated up to, can be to prevent because the spillwag chute of guiding region and the spillwag chute of rotation plug-flow reaction zone are isolated Only floating object enters rotation plug-flow reaction zone.

2nd, resilient filler layer in plug-flow reaction zone is revolved, filler surface area is very big, is the good carrier of microorganism；When elasticity is filled out It after the surface of material forms biomembrane, can be constantly updated under air water Swirl Condition, keep its bio-contact oxidation to decompose organic dirt Contaminate the effect of thing；

Further, since pond body not overflow, activated sludge are retained, therefore without backflow link, i.e., in the absence of anoxic link, have Survive and multiply beneficial to generation time longer nitrification mushroom, make ammonia nitrogen in sewage nitrification be nitrite, nitrate, taken off for biology Nitrogen creates conditions, and polyP bacteria therein has excessive adsorption phosphorus, there is biological phosphate-eliminating；

Revolving elastic filler in plug-flow reaction zone includes biomembrane, filler support etc., and shared pool volume is less than 10%, the appearance more than 90% Product is activated sludge cyclone reaction area, promotes organic pollution catalytic oxidation and decomposes.

To sum up, the present invention has biomembrance process and the double effects of activated sludge process.

3rd, in the case where revolving plug-flow environment, volume effective rate of utilization is high, will not be short-circuit, downward using 45 degree of bottom of pond gas distribution perforated pipe Cloth hole cross arrangement, when air-flow rises to reaction zone packing layer, bubble cuts filled silk repeatedly, improves the utilization of oxygen Rate；Other gas distribution perforated pipe is easily installed, and is firmly installed, and is hardly damaged, typically need not maintenance；

4th, rotation pushes away the microorganism abundance of biofilter aggregation, it is not necessary to returned sludge, can save pump and pipeline；Caused residue Also specific activity sludge is few for sludge quantity, and the problem of activated sludge bulking will not occur and be lost in；

5th, stable, operational administrative specific activity sludge is easy.

The scope of application of the present invention：

1st, sewage disposal scale is all suitable for, and small scale can use steel equipment, and scale can use greatly reinforced concrete structure；

2nd, can according to requirement of engineering carry out it is multiunit build jointly side by side, specifically will according to the scale and water quality condition of process object, Calculate its BOD5 volumetric loading, the parameter such as pond shape construction and size, to meet handling process and the requirement of construction, and at sewage Manage the requirement of the unified layout of factory；

3rd, using the structures of activated sludge process, if influenceing treatment effect because improving processing load, it may be considered that transform as Plug-flow submerged bacteria filter is revolved, improvement project amount is few.

Brief description of the drawings

Accompanying drawing 1 is the schematic top plan view of the embodiment of the present invention；

Accompanying drawing 2 be in Fig. 1 A-A to schematic cross-sectional view；

Accompanying drawing 3 is B-B direction schematic cross-sectional view in Fig. 1；

Accompanying drawing 4 be in Fig. 1 C-C to schematic cross-sectional view.

In the figures above：1. pond body；2. partition wall；3. guiding region；4. revolve plug-flow reaction zone；5. dividing plate；6. sewage inlet； 7. outlet of sewer；8. it is aerated layer；9. guiding region packing layer；10. water conservancy diversion water-yielding stratum；11. reaction zone packing layer；12. delivery port； 13. gas distribution perforated pipe；14. qi-emitting hole；15. eddy flow state mixing wastewater with air stream；The 151. mixing wastewater with air streams risen；152. gas declined Water mixed flow；16. gas distribution house steward；17. gas distributionbranch pipe；18. tooth form water outlet conduit；19. outlet pipe；20. revolve the air water of plug-flow state Mixed flow.

Embodiment

Below in conjunction with the accompanying drawings and embodiment the invention will be further described：

Embodiment：Referring to shown in accompanying drawing 1~4, one kind revolves plug-flow submerged aerobic biofilter, including two unit for treating water, Two unit for treating water include a pond body 1, and two unit for treating water are bonded with the width level in filter tank and side by side, into It is integral.Wherein, the binding face of two unit for treating water is a partition wall 2, and the bottom of the partition wall 2 and pond body 1 has between one Gap, the bottom of pond body 1 for forming two unit for treating water are interconnected.

The inner space that the pond body 1 of each unit for treating water is formed is followed successively by water conservancy diversion from front to back along its length Area 3 and rotation plug-flow reaction zone 4, separated by a dividing plate 5 between twoth area, and the dividing plate 5 is same with the bottom of the pond body 1 has One gap；

Wherein, the top of the guiding region 3 is provided with sewage inlet 6, and the dividing plate 5 and the gap of the bottom of pond body 1 are led for this Flow the outlet of sewer 7 in area 3；Sewage by the sewage inlet 6 enter guiding region 3, via the outlet of sewer 7 push backward into Enter the lower section of the rotation plug-flow reaction zone 4.Short transverse of the guiding region 3 along pond body 1 divides into aeration successively from the bottom to top Layer 8, guiding region packing layer 9 and water conservancy diversion water-yielding stratum 10.

The rotation plug-flow reaction zone 4 divides into aeration layer 8 and reaction zone successively from the bottom to top along the short transverse of pond body 1 Packing layer 11；The aeration layer 8 of the guiding region 3 connects integrally with the aeration layer 8 of the rotation plug-flow reaction zone 4；The sewage Through push, by the outlet of sewer of the guiding region 3 rearwards into the aeration layer 8 for revolving plug-flow reaction zone 4, and continuing backward The reaction zone packing layer 11 is flowed up through while flowing, the water outlet of a delivery port 12 after processing above the rear end of pond body 1； Wherein,

Length direction of the bottom of the aeration layer 8 along pond body 1 is horizontally disposed an at least gas distribution perforated pipe 13；The gas distribution Perforated pipe 13 connects setting with an air intlet, the air containing oxygen is imported into the aeration layer 8；And the gas distribution It is spaced apart along its length on the body of perforated pipe 13 and is provided with several qi-emitting holes 14, each qi-emitting hole 14 is perforated towards gas distribution The obliquely downward of the sidepiece of pipe 13 opens up；When the gas distribution perforated pipe 13 is one, gas distribution perforated pipe 13 is located at the bottom of pond body 1 Centre position, and have a distance apart from the side wall of pond body 1, to form an eddy flow state mixing wastewater with air stream 15；When the gas distribution When perforated pipe 13 is more, each gas distribution perforated pipe 13 is parallel and is arranged at intervals, and the gas distribution perforated pipe 13 of both sides is apart from pond body 1 Side wall has a distance, and the eddy flow state mixing wastewater with air stream 15 is formed between adjacent two gas distributions perforated pipe 13 and gas distribution perforated pipe Between 13 and the side wall of pond body 1；Under the working condition in filter tank, from the cross section angle of the pond body 1, the gas distribution is worn Mixing wastewater with air stream 151 of the top of hole pipe 13 formed with rising, and between adjacent two gas distributions perforated pipe 13 and gas distribution perforated pipe Mixing wastewater with air stream 152 formed with decline between 13 and the side wall of pond body 1.The mixing wastewater with air stream 151 of the rising is close to pond During 1 top of body, wherein the air included is released, after releasing air, because accommodating change is big therefore continues to lower into pond Body turns into the mixing wastewater with air stream 152 of the decline；Therefore, the mixing wastewater with air stream 152 of the decline due to comprising little air, very To air is free of, it houses mixing wastewater with air stream 151 more than the rising, and then passes through both bulk density differences and produce density current effect Should.The mixing wastewater with air stream 151 of rising is with the mixing wastewater with air stream 152 that declines through the reaction zone packing layer 11 and described Layer 8 is aerated, both collectively form the eddy flow state mixing wastewater with air stream 15.

For the guiding region packing layer 9 with being hung with elastic filler in the reaction zone packing layer 11, the elastic filler is close Collection is filled in the guiding region packing layer 9 and the reaction zone packing layer 11, and relatively described pond body 1 positions；Wherein, it is described Elastic filler is made up of multiple strip fillers for being easy to mushroom to adhere to, and the strip filler includes a strip main body, the strip main body On along its length and towards extend around it is intensive be provided with more attachment filaments, the surface of each attachment filament is attaching surface, Aerobic bacteria attachment propagation in attaching surface water supply stream.

Wherein, in addition to a gas distribution supply air line, the gas distribution supply air line is by a gas distribution house steward 16 and Duo Gen gas distributionbranch pipes 17 connect and compose；The gas distribution house steward 16 connects the air intlet, and horizontally disposed in the top of the pond body 1； The gas distributionbranch pipe 17 has more, and each gas distributionbranch pipe 17 connects the gas distribution house steward 16, and each gas distributionbranch pipe 17 is stretched downwards The bottom for entering the pond body 1 connects with the gas distribution perforated pipe 13.

Wherein, the top rear of the reaction zone water-yielding stratum 12 is provided with the delivery port 12, and the delivery port 12 connects a tooth Shape water outlet conduit 18, the tooth form water outlet conduit 18 are connected with an outlet pipe 19.

Wherein, there is a gap apart from bottom of pond by the dividing plate 5 between guiding region 3 and rotation plug-flow reaction zone 4, by this The design in gap, for producing a thrust to the sewage for entering rotation plug-flow reaction zone 4, the thrust contributes to sewage Transmit evenly Into whole rotation plug-flow reaction zone 4；

Simultaneously as the multiple eddy flow state air waters being originally formed in rotation plug-flow reaction zone 4 can be mixed by the effect of the thrust Plug-flow effect backward is played at interflow 16, and each eddy flow state mixing wastewater with air stream 15 is affected by it can be while itself spins upside down It is moved rearwards, so as to form the mixing wastewater with air stream 20 of a rotation plug-flow state backward.

By installing gas distribution perforated pipe 13 in the aeration layer 8 of bottom of pond, the qi-emitting hole 14 on gas distribution perforated pipe 13 is in the present invention 45 degree of downward cross arrangements, and elastic filler at least is installed in reaction zone packing layer 11；After sewage is filled in pond, air blast is opened Machine supplies to gas distribution perforated pipe 13, and due to the small rising of band air water fluid capacitance weight, the not sparkling water capacity is great to flowing down, therefore produces different Density current effect, form eddy flow state；When sewage enters rotation plug-flow reaction zone 4 behind guiding region 3 in pond bottom, current are just as spiral Shape promotes and iterates through the haptoreaction of reaction zone packing layer 11, until the muddy water mixed solution after overflow discharge processing, from inflow two Secondary sedimentation basin carries out mud-water separation.

The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, it should all be included within the scope of the present invention.

Claims

1. one kind rotation plug-flow submerged aerobic biofilter, it is characterised in that：

Including at least one unit for treating water, the unit for treating water includes a pond body, the inner space edge that the pond body is formed Its length direction is followed successively by guiding region and rotation plug-flow reaction zone from front to back, is separated between twoth area by a dividing plate, and the dividing plate There is a gap with the bottom of the pond body；Wherein,

2. aerobic biofilter according to claim 1, it is characterised in that：The aeration layer extends forwardly into the water conservancy diversion The bottom in area.

3. aerobic biofilter according to claim 2, it is characterised in that：Short transverse of the guiding region along pond body by Under supreme divide into the aeration layer, guiding region packing layer and water conservancy diversion water-yielding stratum successively；Hang and set in the guiding region packing layer There is the elastic filler.

4. aerobic biofilter according to claim 1, it is characterised in that：Also include a gas distribution pipeline, the gas distribution pipeline Connected and composed by a gas distribution house steward and Duo Gen gas distributionbranch pipes；

Wherein, the gas distribution house steward connects the air intlet, and horizontally disposed in the top of the pond body；The cloth Gas branch pipe has more, and each gas distributionbranch pipe connects the gas distribution house steward, and each gas distributionbranch pipe extends downwardly into the bottom of the pond body Portion connects with the gas distribution perforated pipe.

5. aerobic biofilter according to claim 1, it is characterised in that：Comprising two unit for treating water, at two water Reason unit is horizontal and be bonded side by side with the width of pond body, into being integral；Wherein, the binding face of two unit for treating water is one The bottom of partition wall, the partition wall and the pond body has a gap, forms the aeration layer phase of the two unit for treating water pond bodies It is intercommunicated.