CN206553358U - A kind of annular flow oxidation membrane bioreactor and wastewater treatment equipment - Google Patents
A kind of annular flow oxidation membrane bioreactor and wastewater treatment equipment Download PDFInfo
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- CN206553358U CN206553358U CN201720201603.7U CN201720201603U CN206553358U CN 206553358 U CN206553358 U CN 206553358U CN 201720201603 U CN201720201603 U CN 201720201603U CN 206553358 U CN206553358 U CN 206553358U
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Abstract
The utility model discloses a kind of annular flow oxidation membrane bioreactor and wastewater treatment equipment.The reactor is divided into being provided between foamless oxygen-supplying film case, each gallery in circulation gallery and water outlet gallery in the middle of inlet passage, some, every gallery to be separated by water conservancy diversion folded plate, and the oxygen supply membrane module in foamless oxygen-supplying film case is attached with high-effective microorganism.The wastewater treatment equipment includes the first regulating reservoir, pre-oxidation unit, cooling tower, sedimentation basin, the second regulating reservoir, one-level biochemistry pool, secondary biochemical pond, coagulative precipitation tank and advanced treatment unit.Membrane bioreactor is aoxidized using annular flow of the present utility model and wastewater treatment equipment is with strong points to handle suspension type polyvinyl-chloride polymerization workshop section waste water, treatment effeciency is high, the waste water recoverable after processing.
Description
Technical field
The utility model relates in general to field of industrial waste water treatment, and in particular to a kind of annular flow aoxidizes membrane bioreactor
And its wastewater treatment equipment.
Background technology
China's chlor-alkali industry focuses primarily upon northwestward water-deficient area, with the increase of polyvinyl chloride (PVC) yield, uses
Water, displacement also steeply rise, if not taking suitable water recovering process, will aggravate shortage of water resources form, increase enterprise uses
Water pressure.
The waste water that suspension type polyvinyl-chloride polymerization workshop section is produced mainly has polymeric kettle to apply wall flushing water, reclaim VCM storage tanks row
Water and condensed water, compressor seal water, the solidifying water in slurry stripping tower top and PVC polymer resin slurries send filter centrifugal after stripping
Separate the filtrated stock produced.Such wastewater organic pollutant derive from polymerisation in added initiator, dispersant and
The chemicals such as a small amount of painting wall agent, and a small amount of raw material vinyl chloride (VCM), the isomer products of polymerization and oligomer.It is inorganic
Pollutant is mainly derived from the inorganic matter added in polymerisation.Such waste water has discharge capacity big, suspension, turbidity and glue
Body content is high, and COD is not high, but the characteristics of biodegradability difference.Because polymerization process uses pure water, therefore filtrated stock is hard
Degree, chlorion and soluble solid are relatively low, are the recycle-water water source of very high-quality after treatment.
Utility model content
There is provided a kind of compact conformation, high treating effect, treatment effeciency are high in view of the shortcomings of the prior art for the utility model
Annular flow oxidation membrane bioreactor (Annular-flow Membrane Aeration Biologic Reactor, AF-
) and wastewater treatment equipment (system) MABR.
Membrane bioreactor, the reactor point are aoxidized there is provided a kind of annular flow according to first aspect of the present utility model
For inlet passage, some middle circulation gallerys and water outlet gallery, every gallery is interior to be provided between foamless oxygen-supplying film case, each gallery
Separated by water conservancy diversion folded plate, the oxygen supply membrane module in foamless oxygen-supplying film case is attached with high-effective microorganism.
In one embodiment, annular flow oxidation membrane bioreactor is cuboid, and water inlet pipe is arranged on a width side
Two Inner guide folded plates parallel to length side are provided with center, inlet passage, is spaced and sets in several middle circulation gallerys
It is equipped with the circulation folded plate and middle deflection plate parallel to width side, water outlet gallery and is provided with sump, sump is corresponding another
Width side is provided with water outlet weir plate.Under preferable case, Inner guide folded plate is the 10~15% of circulation folded plate length, and circulation folded plate is long
Spend for the 75~85% of reactor width, middle deflection plate overall length is the 70~80% of reactor width.
Under concrete condition, the foamless oxygen-supplying film case is by support frame, membrane module, inlet manifold, air intake branch, outlet
Branch pipe and outlet discharge composition, membrane module are arranged in support frame, and support frame upper end sets multichannel air intake branch, multichannel
Air intake branch is connected with inlet manifold, and wherein inlet manifold is connected with oxygen supply line, and support frame lower end sets multichannel to go out
Gas branch pipe, multichannel going out gas branch pipe is connected with outlet discharge.The support frame is cuboid, cylinder or hexagon formula
Framework, material is reinforcing bar, angle steel, alloy or ABS.The external compressor of oxygen supply line or source of oxygen, air or oxygen enter membrane cavity,
Foamless oxygen-supplying is carried out by fenestra dissection, gas 0.01~0.06Mpa of operating pressure, membrane module adheres to micro- life from inside to outside
Thing is followed successively by aerobic bacteria, amphimicrobe, anaerobic bacteria, removes COD, and realizes synchronous nitration and denitrification, removes NH3- N and TN；Most
Whole water outlet enters sump, and is discharged eventually through overflow weir；Residence time：12~30h.
Under preferable case, the film wire material of the membrane module is polyethylene, polytetrafluoroethylene (PTFE), polypropylene, polystyrene, poly-
The hollow-fibre membrane that vinylidene and/or silicon rubber dense film are made, membrane module is made with curtain or spiral winded type, and film silk is filled out
Fill density：50~200m2/m3；Wherein, film silk two ends are sealed by epoxy sealing glue, and are docked with seal cavity；Seal cavity
One end is docked with film silk, and the other end is connected with air intake branch or going out gas branch pipe.
In a preferred embodiment, foamless oxygen-supplying film case is arranged to rotary type, the foamless oxygen-supplying film case by support frame,
Membrane module, inlet manifold, outlet discharge, hollow rotating shaft and motor composition.Membrane module surrounds hollow rotating shaft horizontal type
In support frame, one end of membrane module is connected with inlet manifold, and the other end is connected with outlet discharge.Wherein, enter
Gas discharge is connected with hollow rotating shaft, and the coupling part of hollow rotating shaft and inlet manifold is provided with multiple ventholes, hollow
The top of rotary shaft is provided with air inlet bearing block, and air inlet bearing block is connected with outside oxygen supply line, along along hollow rotating shaft
Radial hole is entreated to convey oxygen to inlet manifold.Outlet discharge is connected with waste line.
According to second aspect of the present utility model, there is provided a kind of wastewater treatment equipment, including the first regulating reservoir, pre-oxidation list
Member, cooling tower, sedimentation basin, the second regulating reservoir, one-level biochemistry pool, secondary biochemical pond, coagulative precipitation tank and advanced treatment unit；
Wherein, the first regulating reservoir is connected with pre-oxidation unit, and cooling tower is connected with sedimentation basin, pre-oxidation unit and sedimentation basin
It is connected respectively with the second regulating reservoir, the second regulating reservoir, one-level biochemistry pool, secondary biochemical pond, coagulative precipitation tank and advanced treating list
Member is sequentially connected；
Wherein, one-level biochemistry pool uses carrier biofilm reactor, and secondary biochemical pond uses above-mentioned AF-MABR.
In certain embodiments, pre-oxidation unit includes ozone generator, microbubble generator and ozone tail gas destruction
Device.Microbubble generator can decline gas for gas-liquid spiral-flow type microbubble generator, venturi type microbubble generator, jet
Bubble generator or machine cuts decline bubble generator.
In further embodiments, pre-oxidation unit is broken including ozone generator, ultraviolet light generator and ozone tail gas
Bad device.
In certain embodiments, particulate filler, honeycomb padding, rope form filler can be used in carrier biofilm reactor
Filler is used as with one or more combinations in soft-filler.Under preferable case, in carrier biofilm reactor, in water inlet end and
Water side respectively sets one, mixer, diagonal to install, and mixing direction is adjustable in running.
In a preferred embodiment, the advanced treatment unit includes sand filtration, advanced oxidation and carbon filter, and wherein advanced oxidation is adopted
With Fenton oxidation, class Fenton oxidation, catalytic ozonation, microbubble ozone oxidation, photocatalysis or electrocatalytic oxidation.
AF-MABR and wastewater treatment equipment of the present utility model compared with prior art, have the advantage that：
1.AF-MABR film surface microorganism species is various, bacterium, primary, metazoa cross-distribution, is eaten by nature
Thing chain principle realizes sludge reduction, reduces resource consumption.Annular baffling Corridor Design, makes microorganism and sewage mass-transfer efficiency more
Height, high with processing load, floor space is small, strong shock resistance, the low advantage of energy consumption.Can in combination with bubble-free aeration technology
The characteristics of realizing synchronous nitration and denitrification, water outlet is not required to setting nitrification liquid to flow back, and is also not required to add carbon source, you can reach ammonia nitrogen
Efficiently removed with total nitrogen.
2. microbubble integrated reaction is for Wastewater Pretreatment, ozone utilization rate and the reaction with pollutant are greatly improved
Speed, fast and effectively removes the organic matter of most of difficult degradation in waste water, while the biodegradability of waste water is improved, the skill
Art is used in combination with carrier biofilm reactor, AF-MABR, further improves wastewater treatment potentiality.Water outlet COD after final process
Stabilization is less than 10mg/L in below 30mg/l, total nitrogen.
3. each unit targetedly handles pollutant, pretreatment unit is that post-processing unit releases biological inhibition and is provided with
The reaction environment of profit, technique end can solve Conventional waste water Treatment for Reuse problem not up to standard by advanced oxidation.
Brief description of the drawings
Fig. 1 is AF-MABR structure of reactor schematic diagram of the present utility model；
Fig. 2 is a kind of structural representation of foamless oxygen-supplying film case in the utility model；
Fig. 3 is the structural representation of another foamless oxygen-supplying film case in the utility model；And
Fig. 4 is the technique for handling suspension type polyvinyl-chloride polymerization workshop section waste water using wastewater treatment equipment of the present utility model
Route map.
Embodiment：
The utility model is described in further detail below by embodiment and with reference to accompanying drawing.Identical label in accompanying drawing
Represent identical and similar part.
Referring to Fig. 1, AF-MABR reactors are cuboid, and specification is long 22m × wide 20m × depth 5.5m, is divided along its length
Circulation gallerys 12,13 and a water outlet gallery 14 for an inlet passage 11, in the middle of two, the length of each bar gallery are identical.Often
Be provided with symmetrical two foamless oxygen-supplying films case 3 in bar gallery, each foamless oxygen-supplying film case 3 by pipeline respectively with oxygen feeding tube line 6
Connected with waste line 9.Water inlet pipe 1 is arranged on the width side of reactor one center, be provided with inlet passage 11 two parallel to
Set gradually in the Inner guide folded plate 2 of reactor length side, two middle circulation gallerys 12,13 and be parallel to the first of width side
Circulation folded plate 4, the middle circulation folded plate 10 of deflection plate 5 and second, Inner guide folded plate 2 is vertical with the first circulation folded plate 4 to be connected.First
The two ends of the circulation folded plate 10 of circulation folded plate 4 and second are current mouthful, and the center of middle deflection plate 5 is current mouthful.Wherein, Inner guide
The length of folded plate 2 is 1.7m, and the length of the first circulation folded plate 4 and the second circulation folded plate 10 is 16m, the length of middle deflection plate 5
For 15m.The center of water outlet gallery 14 is provided with sump 7, and another width side of the corresponding reactor of sump 7 is provided with water outlet weir plate
8。
Fig. 2 shows a kind of state type foamless oxygen-supplying film case 3, and the foamless oxygen-supplying film case 3 is by support frame 31, membrane module
32nd, inlet manifold 33, air intake branch 34, going out gas branch pipe 35 and outlet discharge 36 are constituted.Membrane module 32 is vertical to be arranged on branch
In support frame frame 31, the upper end of support frame 31 sets multichannel air intake branch 34, and multichannel air intake branch 34 is connected with inlet manifold 33,
Wherein inlet manifold 33 is connected with oxygen supply line 6.The lower end of support frame 31 sets multichannel going out gas branch pipe 35, multichannel going out gas branch pipe
35 are connected with outlet discharge 36.Wherein inlet manifold 33 is connected with oxygen supply line 6, outlet discharge 36 and waste line 9
Connection.The external compressor of oxygen supply line 6 or source of oxygen, air or oxygen enter membrane cavity, are carried out by fenestra dissection still
Oxygen supply, 0.01~0.06Mpa of operating pressure.
, can also be using a kind of the rotary still of alternative Fig. 2 shown in Fig. 3 in other embodiments of the present utility model
Oxygen supply film case 3, the foamless oxygen-supplying film case 3 is by support frame 31, membrane module 32, inlet manifold 33, outlet discharge 36, hollow
Rotary shaft 37 and motor 38 are constituted.Membrane module 32 is arranged in support frame 31 around the horizontal type of hollow rotating shaft 37, membrane module
32 one end is connected with inlet manifold 33, and the other end is connected with outlet discharge 36.Wherein, inlet manifold 33 and hollow rotation
Rotating shaft 37 is connected, and hollow rotating shaft 37 is provided with multiple ventholes, the top of hollow rotating shaft 37 with the coupling part of inlet manifold 33
End is provided with air inlet bearing block 40, and air inlet bearing block 40 is connected with outside oxygen supply line 6, along the central footpath of hollow rotating shaft 37
Oxygen is conveyed to hole to inlet manifold 33.Outlet discharge 36 is connected with waste line 9.During motor 38 is driven by belt 39
Empty rotary shaft 37 is rotated, and drives whole membrane module 32 to be rotated in AF-MABR reactors so that current are abundant with membrane module 32
Contact.The film silk material matter and manufacture craft of membrane module 32 can be identical with the embodiment shown in Fig. 2.By experimental verification, adopt
With the state type foamless oxygen-supplying film case shown in the rotary foamless oxygen-supplying film case alternate figures 2 shown in Fig. 3, reaction efficiency can be carried
It is high by more than 20%.
Referring to Fig. 4, suspension type polyvinyl-chloride polymerization workshop section waste water is handled using wastewater treatment equipment of the present utility model,
Mainly include the following steps that：
(1) PVC slurries treatment of wastewater from stripping initially enters the first regulating reservoir and carries out water quality, the regulation of water homogeneous；
(2) the PVC slurries treatment of wastewater from stripping Jing Guo water quality adjustment enters pre-oxidation section；
(3) PVC centrifugation mother liquor waste water initially enters cooling tower, is cooled to 25 DEG C to 40 DEG C；
(4) enter sedimentation basin through cooling down the centrifugal mother liquor waste water of tower cooler, PVC granule is reclaimed by precipitation；
(5) PVC slurries treatment of wastewater from stripping by pre-oxidation and the centrifuge mother liquor through supercooling, precipitation enter the second regulation
Pond；
(6) waste water carries out water quality, the regulation of water homogeneous in the second regulating reservoir, and the water outlet of the second regulating reservoir enters one-level biochemistry
Pond, one-level biochemistry uses carrier biofilm reactor；
(7) water outlet of one-level biochemistry pool enters secondary biochemical pond, and secondary biochemical pond aoxidizes membrane bioreactor using annular flow
(Annular-flow Membrane Aeration Biologic Reactor, AF-MABR)；
(8) water outlet of secondary biochemical pond enters coagulative precipitation tank, carries out coagulating sedimentation；
(9) water outlet that coagulative precipitation tank water outlet enters after advanced treating section, advanced treating can carry out reuse.
Under concrete condition, in the step (1), retention time of sewage is preferably 6~8h.
Under concrete condition, in the step (2), pre-oxidation section (unit) can use microbubble ozonation technology or purple
Outside/ozonation technology.By pre-oxidizing the processing of section, larger molecular organicses and bio-toxicity material are degraded, and B/C ratios are carried
Rise.In a preferred embodiment, using microbubble ozonation technology, a diameter of 5~50 μm of produced ozone bubbles are stopped
Time is 20~40min, and gas-water ratio is 0.06~0.2, and ozone concentration in water is 10~30mg/L.Due to ozone microbubble tool
There are bigger specific surface area, longer residence time, therefore compared to routine techniques, ozone utilization rate is high, and residual ozone amount is few, can
Realize that pollutant is efficiently removed, and cut down residual ozone amount.In this process section, the preliminary of difficult degradation larger molecular organicses can be achieved
Degraded, it is easy to the progress of subsequent biochemical technique.
Under concrete condition, in the step (6), one-level biochemistry pool hydraulic detention time is 8-24h, and water temperature is 10~25
DEG C, dissolved oxygen is 0~0.5mg/L.
Under concrete condition, in the step (8), need to add coagulant and flocculation aid in coagulative precipitation tank, coagulant is nothing
Machine salt coagulant (such as aluminum sulfate, ferric trichloride, ferrous sulfate, alum, sodium aluminate, ferric sulfate) or macromolecule coagulation
Agent (such as aluminium polychloride or bodied ferric sulfate), 20~60mg/L of dosage, flocculation aid is polyacrylamide, dosage 0.6
~1.5mg/L.
Embodiment：
PVC slurry treatment of wastewater from stripping is with 20m3/ h flow initially enters the first regulating reservoir to water quality and quantity well-balanced adjustment, stops
Time 8h is stayed, microbubble pre-oxidation unit is entered afterwards, the residence time is 30~40min, and ozone adds concentration：20~
40mg/L.Remaining O3Catalysis generation O in the presence of effective catalyst in ozone tail gas breaking plant2。
Slurry treatment of wastewater from stripping and cooling, the centrifugal mother liquor waste water (160m of preliminary sedimentation by pre-oxidation3/ h) enter
Two regulating reservoirs, it is rear to enter one-level biochemistry pool.One-level biochemistry pool is carrier biofilm reactor, is filled with filler in reaction tank, micro-
Biological attachment carries out biological retention, improves reaction efficiency on filler.
Referring back to Fig. 1, one-level bio-chemical effluent enters to AF-MABR reactors with water inlet pipe 1 first, and current are then in reaction
Integrally flowed in device in circulation state.Sequentially pass through inlet passage 11, middle gallery 12,13 and water outlet gallery 14, and with each nothing
The membrane module 32 steeped in oxygen supply film case 3 is fully contacted.Attached microbial is successively preferably from inside to outside in the film silk table face of membrane module 32
Oxygen bacterium, amphimicrobe, anaerobic bacteria, remove COD, and realize synchronous nitration and denitrification, remove NH3- N and TN.Final outflow water enters
Sump 7, and discharged eventually through overflow weir 8；Residence time：12~30h.
After AF-MABR biochemical reactions terminate, into coagulation unit, coagulant selection is high molecular polymerization aluminium chloride, is added
Concentration is 40mg/L, and flocculation aid selection polyacrylamide adds concentration for 1mg/L, outward transport is handled after base sludge dehydration, upper strata
Clear liquid enters advanced oxidation cell processing after sand filtration.
Advanced oxidation is ozone heterogeneous catalytic oxidation, catalyst activity component as advanced treatment process, this selection
It is Fe-Cu-Mn oxides with mass ratio m (Fe):m(Cu):M (Mn)=(1.8~2):(1.5~3):2 ratios are constituted, to aoxidize
Aluminium, silica gel, activated carbon, diatomite etc. are the composite catalyst that carrier is made, and 10~40min of residence time, ozone adds concentration：
20~60mg/L.Advanced oxidation water outlet is filtered by carbon, and final outflow water reaches national composite wastewater discharge primary standard, at each stage
Pollutant index is shown in Table 1 after reason.
Table 1：Each stage pollutant removal index
The utility model organically pre-oxidizes microbubble-and carrier biofilm reactor-AFMABR- advanced treatings combine
Come, each unit pollutant process efficiency high is with strong points, and pretreatment unit provides good reaction environment to be followed by unit, it is dirty
Contaminate thing removal efficiency high, strong shock resistance, technique can be run as an organic whole with efficient stable qualified discharge
The utility model is described in detail embodiment of above, but the content is only preferable reality of the present utility model
Apply example, it is impossible to be considered as limiting practical range of the present utility model.All equivalent changes made according to present utility model application scope
All should still it be belonged within patent covering scope of the present utility model with improving.
Claims (10)
1. a kind of annular flow aoxidizes membrane bioreactor, it is characterised in that the reactor is divided into inlet passage, some centres
It is provided between foamless oxygen-supplying film case, each gallery and is separated by water conservancy diversion folded plate in circulation gallery and water outlet gallery, every gallery, it is still
Oxygen supply membrane module in oxygen supply film case is attached with high-effective microorganism.
2. annular flow according to claim 1 aoxidizes membrane bioreactor, it is characterised in that the foamless oxygen-supplying film case by
Support frame, membrane module, inlet manifold, air intake branch, going out gas branch pipe and outlet discharge composition, membrane module are arranged on support
In framework, support frame upper end sets multichannel air intake branch, and multichannel air intake branch is connected with inlet manifold, wherein air inlet gas collection
Pipe is connected with oxygen supply line, and support frame lower end sets multichannel going out gas branch pipe, and multichannel going out gas branch pipe is connected with outlet discharge.
3. annular flow according to claim 2 aoxidizes membrane bioreactor, it is characterised in that the membrane module be curtain or
Spiral winded type, film silk packed density：50~200m2/m3；Wherein, film silk two ends sealed by epoxy sealing glue, and with sealing
Cavity is docked；Seal cavity one end is docked with film silk, and the other end is connected with air intake branch or going out gas branch pipe.
4. annular flow according to claim 1 aoxidizes membrane bioreactor, it is characterised in that annular flow aoxidizes membrane bioreaction
It is cuboid to answer device, and water inlet pipe is arranged on width side center, and two are provided with inlet passage parallel to being led in length side
Flow the circulation folded plate and middle deflection plate being arranged at intervals with folded plate, several middle circulation gallerys parallel to width side, water outlet
Sump is provided with gallery, the corresponding another width side of sump is provided with water outlet weir plate.
5. annular flow according to claim 2 aoxidizes membrane bioreactor, it is characterised in that the support frame is rectangular
The framework of body, cylinder or hexagon formula.
6. a kind of wastewater treatment equipment, it is characterised in that including the first regulating reservoir, pre-oxidation unit, cooling tower, sedimentation basin, the
Two regulating reservoirs, one-level biochemistry pool, secondary biochemical pond, coagulative precipitation tank and advanced treatment unit；
Wherein, the first regulating reservoir is connected with pre-oxidation unit, and cooling tower is connected with sedimentation basin, pre-oxidation unit and sedimentation basin difference
Be connected with the second regulating reservoir, the second regulating reservoir, one-level biochemistry pool, secondary biochemical pond, coagulative precipitation tank and advanced treatment unit according to
Secondary connection；
Wherein, one-level biochemistry pool uses carrier biofilm reactor, and secondary biochemical pond is used as described in claim 1-5 is any
Annular flow aoxidizes membrane bioreactor.
7. wastewater treatment equipment according to claim 6, it is characterised in that pre-oxidation unit includes ozone generator, micro-
Bubble generator and ozone tail gas breaking plant.
8. wastewater treatment equipment according to claim 6, it is characterised in that pre-oxidation unit includes ozone generator, purple
Outer optical generator and ozone tail gas breaking plant.
9. wastewater treatment equipment according to claim 6, it is characterised in that filled out in carrier biofilm reactor using granular
One or more combinations in material, honeycomb padding, rope form filler and soft-filler are used as filler.
10. wastewater treatment equipment according to claim 9, it is characterised in that in carrier biofilm reactor, in water inlet end
One, mixer is respectively set with water side, and diagonal to install, mixing direction is adjustable in running.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830547A (en) * | 2017-03-03 | 2017-06-13 | 北京中科众联新能源技术服务有限公司 | A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device |
| CN110002667A (en) * | 2019-03-28 | 2019-07-12 | 知合环境（北京）有限责任公司 | A kind of processing system and method for black and odorous water |
| CN115353204A (en) * | 2022-09-08 | 2022-11-18 | 中国长江三峡集团有限公司 | Baffle treatment system |
-
2017
- 2017-03-03 CN CN201720201603.7U patent/CN206553358U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830547A (en) * | 2017-03-03 | 2017-06-13 | 北京中科众联新能源技术服务有限公司 | A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device |
| CN106830547B (en) * | 2017-03-03 | 2018-01-09 | 北京中科众联新能源技术服务有限公司 | A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device |
| CN110002667A (en) * | 2019-03-28 | 2019-07-12 | 知合环境（北京）有限责任公司 | A kind of processing system and method for black and odorous water |
| CN115353204A (en) * | 2022-09-08 | 2022-11-18 | 中国长江三峡集团有限公司 | Baffle treatment system |
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