CN104649411A - Up-flow anaerobic biological filter bed reactor - Google Patents
Up-flow anaerobic biological filter bed reactor Download PDFInfo
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- CN104649411A CN104649411A CN201510016953.1A CN201510016953A CN104649411A CN 104649411 A CN104649411 A CN 104649411A CN 201510016953 A CN201510016953 A CN 201510016953A CN 104649411 A CN104649411 A CN 104649411A
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- biological
- filter bed
- bed reactor
- reactor body
- lifting type
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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
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses an up-flow anaerobic biological filter bed reactor which comprises a reactor body, wherein a biological mud bed area, a biological mud suspension area and a methane overflow area are sequentially arranged in the reactor body from bottom to top; a biological mud circulating system is arranged at the bottom of the biological mud bed area of the reactor body; a floating packing layer is arranged in the biological mud suspension area; and a discharge system is arranged at the top of an upper clarification area of the reactor body. According to the up-flow anaerobic biological filter bed reactor, a balanced water distribution system, a stirring device and a gas striping structure with a complicated structure in the prior art are replaced with the biological mud circulating system, so that sewage is fully mixed with the biological mud to obtain a relatively good mass transfer condition; and the bacteria storage amount of anaerobic biological bacteria is increased by arranging the floating packing layer in the biological suspension area, so that the sewage treatment capacity of the up-flow anaerobic biological filter bed reactor can be effectively improved and maintained for a long period of time.
Description
Technical field
The present invention relates to sewage disposal technology, specifically relate to a kind of flow lifting type anaerobe filter bed reactor.
Background technology
Anaerobic biotreatment method utilizes facultative anaerobe and obligatory anaerobic bacteria that larger molecular organics in sewage is degraded to low molecule organic matter, and then be converted into the organic wastewater treatment of methane, carbonic acid gas, wherein, upflow anaerobic sludge blanket reactor is a kind of typical structure of Anaerobic biotreatment method.Relative to the anaerobic reactor of other types, the hydraulic detention time of waste water in upflow anaerobic sludge blanket reactor is shorter, and therefore required pond appearance reduces greatly.In addition, equipment is simple, and it is convenient to run, and do not need to establish settling tank and biological mud reflux, do not need filling filler, also need not establish mechanical stirring device in reaction zone, cost is relatively low, is convenient to management, and there is not blockage problem.
In the prior art, upflow anaerobic sludge blanket reactor is made up of biological mud reaction zone, gas-liquid-solid three-phase separator (comprising settling region) and air chamber three part usually.In reaction zone, bottom, retain a large amount of anaerobe mud, the biological mud with good sedimentation function and cohesion performance forms biological mud layer in bottom.Sewage to be processed flows into and carries out mixing with biological mud biological mud layer and contact bottom anaerobe mud bed, the organism in the microbial decomposition sewage in biological mud, and is degraded to methane and carbon dioxide through anaerobically fermenting here.Biogas is constantly released with micro-bubble form, micro-bubble is in uphill process, continuous merging, form larger bubble gradually, rise on biological mud bed top together with water enter triphase separator because the stirring of biogas forms the thinner biological mud of biological mud concentration, when biogas encounters the reflector of separator bottom, be folded to the surrounding of reflector, then air chamber is entered through water layer, concentrate on air chamber biogas, derive with conduit, solid-liquid mixed solution enters the settling region of triphase separator through reflection, biological mud in sewage flocculates, particle increases gradually, and sedimentation under gravity.The biological mud be precipitated on skew wall slides back in anaerobic reaction district along skew wall, and make the biological mud that in reaction zone, accumulation is a large amount of, the process water outlet after being separated with biological mud is overflowed from overflow weir top, settling region, then discharges biological mud bed.
But, the upflow anaerobic sludge blanket reactor of said structure, because being difficult to form granule sludge, anaerobic sludge again air-capacitor of holding under the arm in small, broken bits easily runs off, therefore the problem that the ubiquity anaerobe bacterium amount of storing is few.In addition, easily occur short stream and Biased flow phenomenon in biological mud bed, mass transfer condition is poor, affects sewage treatment capacity.
Summary of the invention
For above-mentioned upflow anaerobic sludge blanket reactor Problems existing, the object of the present invention is to provide a kind of flow lifting type anaerobe filter bed reactor, to increase the amount of storing of anaerobe bacterium and to improve mass transfer condition.
In order to achieve the above object, present invention employs following technical scheme:
A kind of flow lifting type anaerobe filter bed reactor, have such feature, comprising: reactor body, the inside of reactor body is provided with biological Ni Chuan district, biological mud suspension zone from the bottom up successively, and biogas overflow area; Wherein, reactor body is provided with the biological mud recycle system in the bottom in biological Ni Chuan district, and, the biological mud recycle system comprises: the pipette being arranged on reactor body bottom centre position, be positioned at the biological mud recycle pump of reactor body outside, be arranged at the cloth pendular ring pipe of reactor body inside, and multiple annular array is distributed in the shrinkage cavity shower nozzle of cloth pendular ring pipe lower end; Be connected by the first pipeline between pipette with the liquid sucting port of biological mud recycle pump, the liquid outlet of biological mud recycle pump is connected by the second pipeline with between cloth pendular ring pipe, and the first pipeline is communicated with suction culvert, and the second pipeline is communicated with shore pipe; Biological mud suspension zone is provided with floating filler layer, and biological mud suspension zone is separated into lower settling section and upper settling section by floating filler layer; Reactor body is provided with outlet system at the top of upper settling section.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: floating filler layer comprises: go up grid, be parallel to the Under The Grille of grid, and several are suspended in the floating stuffing between grid and Under The Grille.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: floating filler layer is provided with at least one deck broken shell grid, and broken shell grid are between upper grid and Under The Grille, further, the edge of broken shell grid is connected with the inner side-wall of reactor body.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: floating filler layer is provided with the two-layer broken shell grid paralleled.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: the nozzle of each shrinkage cavity shower nozzle is all along the arranged tangential of cloth pendular ring pipe.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: outlet system comprises: the water leg being arranged on liquid level position place, settling section, the water sealed tank be connected with on the outer side wall being formed at reactor body and with water leg; Wherein, water leg is cross ring-type.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: floating stuffing comprises: cage shell and some the microbe carriers be seated in cage shell.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: cage shell is truncated cone-shaped or spherical.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: microbe carrier comprises: for the formation of the fiber biofilm layer of microbial film, cover the first elasticity grenadine on fiber biofilm layer one surface, and cover the second elasticity grenadine on another surface of fiber biofilm layer, wherein, between the first elasticity grenadine and the second elasticity grenadine, heat connects fixing.
Further, in flow lifting type anaerobe filter bed reactor provided by the invention, such feature can also be had: the outer side wall of reactor body is also provided with the mud position observation tube for showing biological Ni Chuan district height.
The positively effect that the present invention has on the basis of the above is:
Flow lifting type anaerobe filter bed reactor provided by the invention, by arranging the biological mud recycle system in the bottom in biological Ni Chuan district, is optimized and be instead of the balanced water distribution system, whipping appts and the baroque air lift structure that adopt in prior art.Sewage is fully mixed, to obtain good mass transfer condition with biological mud.And by arranging in biological mud suspension zone the amount of storing that floating filler layer increases anaerobe bacterium, thus effectively improve in two and the long-time sewage treatment capacity maintaining flow lifting type anaerobe filter bed reactor simultaneously.
In addition, flow lifting type anaerobe filter bed reactor provided by the invention also carries out filtration by floating filler layer to the biological mud in biological mud suspension zone and retains, and adopt the water leg of cross ring-type to enable settling section evenly fluid, the natural pond liquid of settling section is prevented to be with mud to discharge because local velocity is too fast, therefore, this flow lifting type anaerobe filter bed reactor, without the need to the separation adopting triphase separator can realize biogas, natural pond liquid and biological mud, significantly can reduce production cost.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of flow lifting type anaerobe filter bed reactor in the embodiment that the present invention relates to.
Fig. 2 is the sectional view along alphabetical A-A gained in Fig. 1.
Fig. 3 is the vertical view of outlet system in the embodiment that the present invention relates to.
Fig. 4 is the vertical view of upper grid in the embodiment that the present invention relates to.
Fig. 5 is the vertical view of grid of breaking a rule in the embodiment that the present invention relates to.
Fig. 6 is the structural representation of cage shell in the embodiment that the present invention relates to.
Fig. 7 is the structural representation of microbe carrier in the embodiment that the present invention relates to.
Fig. 8 is the exploded perspective view of microbe carrier in the embodiment that the present invention relates to.
Embodiment
The technique means realized to make the present invention, creation characteristic, reach object and effect is easy to understand, following examples are specifically addressed flow lifting type anaerobe filter bed reactor provided by the invention by reference to the accompanying drawings.
As shown in Figure 1, the flow lifting type anaerobe filter bed reactor that the present embodiment provides comprises the reactor body 1 of drum-shaped, and the inside of this reactor body 1 is provided with biological Ni Chuan district, biological mud suspension zone from the bottom up successively, and biogas overflow area.Wherein, dotted line 11 is the line of delimitation of biological Ni Chuan district and biological mud suspension zone, and dotted line 12 is the line of delimitation of biological mud suspension zone and biogas overflow area.
Concrete, as depicted in figs. 1 and 2, reactor body 1 is provided with the biological mud recycle system in the bottom in biological Ni Chuan district, in the present embodiment, the biological mud recycle system comprises: pipette 21, biological mud recycle pump 22, cloth pendular ring pipe 23, and several shrinkage cavity shower nozzles 24.
Wherein, pipette 21 is arranged on the bottom centre position of reactor body 1, biological mud recycle pump 22 is positioned at the outside of reactor body 1, cloth pendular ring pipe 23 is positioned at the inside of reactor body 1 and the inner side-wall circumference along reactor body 1 lays, be connected by the first pipeline 25 between pipette 21 and the liquid sucting port of biological mud recycle pump 22, the liquid outlet of biological mud recycle pump 22 is connected by the second pipeline 26 with between cloth pendular ring pipe 23, and, first pipeline 25 is communicated with suction culvert 27, and the second pipeline 26 is communicated with shore pipe 28.
In the present embodiment, the internal circulating load of biological mud recycle pump 22 is several times as much as sewage load, and in order to overcome pipeline linear loss and local losses, lift adds the free head of more than 5 meters again.Multiple shrinkage cavity shower nozzle 24 annular arrays are distributed in the lower end of cloth pendular ring pipe 23, and the nozzle of each shrinkage cavity shower nozzle 24 is all along the arranged tangential of cloth pendular ring pipe 23.
This biological mud recycle system forces muddy water mixed solution to circle in the bottom of reactor body 1, collect to the central position bottom reactor body 1 again simultaneously, and then form the motion of eddy current shape, and, move to the muddy water mixed solution of reactor body 1 bottom centre position again by pipette 21 sucking-off reactor body 1, muddy water mixed solution reenters in reactor body 1 through the first pipeline 25 and the second pipeline 26 more successively.So constantly reciprocation cycle, this just makes the biological mud bottom reactor body 1 fully mix with muddy water mixed solution, to obtain good effect of mass transmitting, in addition, this cyclic motion makes the biological mud in biological Ni Chuan district all play one's part to the full, preventing portion decomposing biological mud leaves unused, thus significantly improves the mass transfer condition of flow lifting type anaerobe filter bed reactor.
In the present embodiment, biological mud suspension zone is provided with floating filler layer, and this floating filler layer is not only the main force that organism transforms, and also plays water distribution uniformity simultaneously.Further, biological mud suspension zone is separated into lower settling section and upper settling section by floating filler layer.Such setting can prevent the biological mudflow in biological mud suspension zone from losing, and the triphase separator of effective fictitious hosts costliness, can also play cleaning action, guarantees that up-flow liquid is limpid, not easily causes the blocking of floating filler layer.
Further, as shown in figures 1 and 3, reactor body 1 is provided with outlet system 3 at the top of upper settling section.Concrete, outlet system 3 comprises: the water leg 31 being arranged on liquid level position place, settling section, the water sealed tank 32 be connected with on the outer side wall being formed at reactor body 1 and with water leg 31.
In the present embodiment, in order to enable evenly fluid and the not bias current of upper settling section, not short stream, water leg 31 is preferably cross ring-type, thus contributes to the mass transfer effect improving total volume.Wherein, natural pond liquid discharges reactor body 1 through water leg 31 and water sealed tank 32 successively, and the liquid level that the biogas produced in floating filler layer then overflows settling section enters biogas overflow area, and is derived by biogas effuser 4.
Floating filler layer comprises: upper grid 51, be parallel to the Under The Grille 52 of grid 51, and several is suspended in the floating stuffing 53 between grid 51 and Under The Grille 52.Wherein, upper grid 51 and Under The Grille 52 are stationary grizzly, several floating stuffings 53 without the need to fixed installation, namely in the region that upper grid 51 and Under The Grille 52 are formed with the upper and lower suspension adjustment of height of liquid level of biological mud suspension zone.This avoid the conglomeration blocking of filler, be both beneficial to the clear and coherent of conglomeration blocking, and be also beneficial to the uniformly distributing again of up-flow liquid.
Floating stuffing 53 comprises cage shell as shown in Figure 6 and some microbe carriers 531 as shown in Figure 7, and wherein, some microbe carriers 531 are seated in this cage shell.In the present embodiment, cage shell is preferably truncated cone-shaped structure, and this cage shell is removably connected with lid 53b by truncated cone-shaped body 53a.
Relative to the spherical suspending filling material of same size size, this truncated cone-shaped cage shell has the advantage that volume is large, can load more microbe carriers.Such as, according to the cubature formula V=4 π R of ball
3/ 3 show that the volume of the spherical suspending filling material of diameter 100 millimeters is 0.5533 cubic decimeter.But, for large footpath be 100 millimeters, path is 95 millimeters, is highly the truncated cone-shaped cage construction of 100 millimeters, according to the cubature formula V=π h (R of round platform
2+ 2rR+r
2)/3 show that the volume of cage shell is 0.7876 cubic decimeter.Further, the full three-dimensional arrangement of floating stuffing, under quick condition, has extraordinary mass transfer effect, and this just makes also effectively to ensure microbic activity while the microorganism amount of storing is many, thus significantly improves sewage treating efficiency.
As shown in Figure 7 and Figure 8, in the present embodiment, microbe carrier 531 comprises: for the formation of the fiber biofilm layer 5311 of microbial film, cover the first elasticity grenadine 5312 on fiber biofilm layer 5,311 one surface, and cover the second elasticity grenadine 5313 on another surface of fiber biofilm layer 5311, wherein, between the first elasticity grenadine 5312 and the second elasticity grenadine 5313, heat connects fixing.
This fiber biofilm layer 5311 is vinylon layer, and rectangular cotton-shaped thin slice.In the present embodiment, first elasticity grenadine 5312 and the second elasticity grenadine 5313 all adopt plastics grenadine, when many microbe carriers 531 are put in outer hull by needs, this microbe carrier 531 by any folding or distortion or can knead or tying.Because the vinylon layer in microbe carrier 531 overgrows with methanobacteria, these methanobacterias repeatedly contact with the carbonaceous organic material in up-flow sewage, adsorb, and make it to be converted into methane gas.
Further, microbe carrier 531 remains varicosity extended configuration.Because the fiber yarn in fiber biofilm layer 5311 is fixed between two elasticity grenadines, prevent microbe carrier from extending to outside cage shell, thus avoid and involve coalescent problem between cage shell, effectively maintain the advantage that vinylon layer specific surface area is large, biofilm ability is strong, and the activity of biological mud can be remained, maintain continuous, stable, the Effec-tive Function of biological mud suspension zone.
As shown in Figure 1 and Figure 5, conveniently clear up the biological mud blocking in floating filler layer or crust, in the present embodiment, floating filler layer is provided with the two-layer broken shell grid (54a, 54b) paralleled.Wherein, broken shell grid (54a, 54b) are between upper grid 51 and Under The Grille 52 and horizontal positioned.The edge of broken shell grid (54a, 54b) is connected with the inner side-wall of reactor body 1.Reduced the liquid level of biological mud suspension zone by the mode of periodic exhaustion natural pond liquid, make some floating stuffings with in liquid level decline process, destroy crust by broken shell grid (54a, 54b).
In addition, as depicted in figs. 1 and 2, for the ease of intuitively showing the biological Ni Chuan district height in reactor body 1, the outer side wall of reactor body 1 is also provided with mud position observation tube 13.This mud position observation tube 13, in conjunction with the control valve 29 on shore pipe 28, is easy to sampling analysis muddy water quality, controls spoil disposal process.
The flow lifting type anaerobe filter bed reactor that the present embodiment provides, by arranging the biological mud recycle system in the bottom in biological Ni Chuan district, is optimized and be instead of the balanced water distribution system, whipping appts and the baroque air lift structure that adopt in prior art.Sewage is fully mixed, to obtain good mass transfer condition with biological mud.And by arranging in biological mud suspension zone the amount of storing that floating filler layer increases anaerobe bacterium, thus effectively improve in two and the long-time sewage treatment capacity maintaining flow lifting type anaerobe filter bed reactor simultaneously.
In addition, the flow lifting type anaerobe filter bed reactor that the present embodiment provides also carries out filtration by floating filler layer to the biological mud in biological mud suspension zone and retains, and adopt the water leg of cross ring-type to enable settling section evenly fluid, the natural pond liquid of settling section is prevented to be with mud to discharge because local velocity is too fast, therefore, this flow lifting type anaerobe filter bed reactor, without the need to the separation adopting triphase separator can realize biogas, natural pond liquid and biological mud, significantly can reduce production cost.
Certainly flow lifting type anaerobe filter bed reactor involved in the present invention is not merely defined in the structure in the present embodiment, any equivalent modifications of carrying out the present invention and substituting also all in category of the present invention.
In the present embodiment, the cage shell of floating stuffing adopts truncated cone-shaped structure, and certainly, in flow lifting type anaerobe filter bed reactor provided by the invention, the cage shell of floating stuffing can also adopt globosity common in prior art.
In the present embodiment, floating filler layer comprises the two-layer broken shell grid paralleled, certainly, in flow lifting type anaerobe filter bed reactor provided by the invention, floating filler layer can also arrange at least one deck broken shell grid according to actual needs, further, broken shell grid can be taked arbitrarily laterally or vertical modes of emplacement.When broken shell grid are vertically placed, the upper and lower end of broken shell grid is connected with upper grid and Under The Grille respectively.
In the present embodiment, reactor body is drum-shaped, and certainly, in flow lifting type anaerobe filter bed reactor provided by the invention, reactor body can also be that rib is tubular.
Claims (10)
1. a flow lifting type anaerobe filter bed reactor, comprises reactor body, it is characterized in that: the inside of described reactor body is provided with biological Ni Chuan district, biological mud suspension zone from the bottom up successively, and biogas overflow area;
Wherein, described reactor body is provided with the biological mud recycle system in the bottom in described biological Ni Chuan district, and, the described biological mud recycle system comprises: the pipette being arranged on described reactor body bottom centre position, be positioned at the biological mud recycle pump of described reactor body outside, be arranged at the cloth pendular ring pipe of described reactor body inside, and multiple annular array is distributed in the shrinkage cavity shower nozzle of described cloth pendular ring pipe lower end;
Be connected by the first pipeline between described pipette with the liquid sucting port of described biological mud recycle pump, the liquid outlet of described biological mud recycle pump is connected by the second pipeline with between described cloth pendular ring pipe, further, described first pipeline is communicated with suction culvert, and described second pipeline is communicated with shore pipe;
Described biological mud suspension zone is provided with floating filler layer, and described biological mud suspension zone is separated into lower settling section and upper settling section by described floating filler layer;
Described reactor body is provided with outlet system in the top of settling section on described.
2. flow lifting type anaerobe filter bed reactor according to claim 1, is characterized in that:
Described floating filler layer comprises: go up grid, be parallel to the Under The Grille of described upper grid, and several are suspended in the floating stuffing between described upper grid and described Under The Grille.
3. flow lifting type anaerobe filter bed reactor according to claim 2, is characterized in that:
Described floating filler layer is provided with at least one deck broken shell grid, and described broken shell grid are on described between grid and described Under The Grille, and the edge of described broken shell grid is connected with the inner side-wall of described reactor body.
4. flow lifting type anaerobe filter bed reactor according to claim 3, is characterized in that:
Described floating filler layer is provided with the two-layer broken shell grid paralleled.
5. flow lifting type anaerobe filter bed reactor according to claim 1, is characterized in that:
The nozzle of each described shrinkage cavity shower nozzle is all along the arranged tangential of described cloth pendular ring pipe.
6. flow lifting type anaerobe filter bed reactor according to claim 1, is characterized in that:
Described outlet system comprises: the water leg being arranged on liquid level position place, described upper settling section, the water sealed tank be connected with on the outer side wall being formed at described reactor body and with described water leg;
Wherein, described water leg is cross ring-type.
7. flow lifting type anaerobe filter bed reactor according to claim 2, is characterized in that:
Described floating stuffing comprises: cage shell and some the microbe carriers be seated in described cage shell.
8. flow lifting type anaerobe filter bed reactor according to claim 7, is characterized in that:
Described cage shell is truncated cone-shaped or spherical.
9. flow lifting type anaerobe filter bed reactor according to claim 7, is characterized in that:
Described microbe carrier comprises: for the formation of the fiber biofilm layer of microbial film, cover the first elasticity grenadine on described fiber biofilm layer one surface, and cover the second elasticity grenadine on described another surface of fiber biofilm layer, wherein, between described first elasticity grenadine and described second elasticity grenadine, heat connects fixing.
10. flow lifting type anaerobe filter bed reactor according to claim 1, is characterized in that:
The outer side wall of described reactor body is also provided with the mud position observation tube for showing biological Ni Chuan district height.
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| CN201510016953.1A CN104649411A (en) | 2015-01-13 | 2015-01-13 | Up-flow anaerobic biological filter bed reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110282836A (en) * | 2019-07-30 | 2019-09-27 | 安徽凯民电力技术有限公司 | A kind of high load capacity subsurface wastewater infiltration system filter sewage processing complex technique |
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| US20140124439A1 (en) * | 2012-11-05 | 2014-05-08 | Korea Institute Of Science And Technology | Apparatus and method for anaerobic wastewater treatment with membrane |
| CN204434358U (en) * | 2015-01-13 | 2015-07-01 | 上海金布梯环保科技发展有限公司 | A kind of flow lifting type anaerobe filter bed reactor |
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| CN2037630U (en) * | 1988-11-26 | 1989-05-17 | 赵玉龙 | Continuous anaerobic sand filter |
| US5143618A (en) * | 1990-08-30 | 1992-09-01 | Hyundai Engineering Co., Ltd. | Process for the treatment of organic wastewater |
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| CN110282836A (en) * | 2019-07-30 | 2019-09-27 | 安徽凯民电力技术有限公司 | A kind of high load capacity subsurface wastewater infiltration system filter sewage processing complex technique |
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