CN107555614A - A kind of floating media filter - Google Patents
A kind of floating media filter Download PDFInfo
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- CN107555614A CN107555614A CN201711020545.9A CN201711020545A CN107555614A CN 107555614 A CN107555614 A CN 107555614A CN 201711020545 A CN201711020545 A CN 201711020545A CN 107555614 A CN107555614 A CN 107555614A
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- filtrate
- unit
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- filter
- cleaning
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- 238000007667 floating Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000000706 filtrate Substances 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 50
- 238000004140 cleaning Methods 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 238000005842 biochemical reaction Methods 0.000 claims abstract description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 231100000719 pollutant Toxicity 0.000 claims description 8
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- QVGXLLKOCUKJST-NJFSPNSNSA-N oxygen-18 atom Chemical compound [18O] QVGXLLKOCUKJST-NJFSPNSNSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
Patent of the present invention is related to a kind of floating media filter, mainly it is made up of tank body, water distribution unit, filtering material unit, filtrate cleaning unit, water unit, spoil disposal unit and unit ventilators, it is characterized in that the invention device is in addition to air inlet and ventilating opening, remaining is confined space, utilize the light filter material characteristic lighter than water, by buoyancy when being accumulated in water, most of more than the water surface, distribution of the small part in underwater can be formed.By the use of the filter material layer of water surface above section as main biochemical reaction zone, the abundant oxygen supply of filtering layer and efficient biochemical reaction can be realized with relatively low energy consumption by ventilation and water distribution；Cleaning unit is set by part under water, the filtrate after cleaning can be recycled to the surface of filtering layer, so that filtering layer is constantly updated, ensures the activity of biomembrane and avoids the blocking of filtering layer and short stream.Sludge after cleaning is periodically discharged by spoil disposal unit.Apparatus of the present invention without filter plate, have it is simple in construction, efficiently, save, do not block, not short stream the features such as.
Description
Technical field
The invention belongs to sewage, exhaust-gas treatment field, and in particular to a kind of floating media filter.
Background technology
Microbial cell almost can be in water environment any suitable carrier surface be firmly attached, and grown thereon
And breeding, from cell in the Extracellular polymers of extracellular stretching, extension make microbial cell formed threadiness tangled structure, just claim
Be biomembrane.
BAF（BAF）It is to integrate biomembrane biochemistry degraded and filtering layer filtering function waste water treatment process,
By biomembrane caused by filter material surface, degraded, nitrification and the denitrification of pollutant are realized.When sewage flows through filter bed, pollution
Thing is filtered and adsorbed first, and then carries out oxidation Decomposition by the microorganism in biomembrane, and its maximum feature is collection biological oxidation
With the suspension that dams in one, floor space is small, flow is simple, effluent quality is high etc., saves the features such as post precipitation pond, always
It is the focus studied in water treatment field.
Existing traditional BAF, when raw water flows through filter material layer from top to bottom, particle size filtering layer space hangs
Floating particles thing is trapped in the filtrate of top layer first so that the filtrate space of top layer is less and less, gradually forms one layer and is cut
The filter membrane for staying thing to form, and play the filtration of " dirt is cut on top layer ".
Also just because of " dirt is cut on top layer " phenomenon of sieving effect so that filtration resistance gradually increases in use in filter tank
Add, filter tank is blocked when serious, the thing decomposition of receiving of Shi Zhong lower floors filtrate is not in full use, and reduces treatment effeciency, increase
Backwash working frequency and intensity.
How while filter tank water treatment efficiency is ensured, and can extends filter tank service life to greatest extent, reduces filter
Pond back washing strength, it is always the emphasis studied during we work.
The content of the invention
Patent of the present invention provides a kind of floating media filter, to solve the shortcomings of the prior art, makes up it and is using
During existing defects.
To reach above-mentioned purpose, the technical solution adopted by the present invention is a kind of floating media filter, including tank body, water distribution list
Member, filtering material unit, filtrate cleaning unit, water unit, spoil disposal unit and unit ventilators, each unit are arranged at tank body
Interior, the tank body is made by water distribution unit from top to bottom water distribution uniformity in the dual oxygen supply of unit ventilators and filtrate cleaning unit
Under, filtrate top layer is set to form oxygen-enriched moisture film, the pollutant in raw water is in the presence of the oxygen-enriched biomembrane in filtrate top layer, quilt
Retention, degraded.Raw water passes through drainage cell after the biomembrane retention and degraded on filtrate and its surface are filled in the tank body
Discharge.In the presence of the cleaning unit, filtrate is constantly updated, and caused sludge is precipitated in sludge bucket by spoil disposal unit
And discharged by discharge pipeline.
The water distribution unit is located at the top of tank body of the present invention, the top of packing layer, carries out water distribution uniformity.
The filtering material unit is located at the middle part of tank body, and using light granules filtrate, particle diameter of filter medium is 2 ~ 20mm, apparent density
For 0.04 ~ 0.15g/cm3, according to tank body height, thickness is up to 4-10m, for the main biochemical reaction water treatment list in filter tank
Member；
The unit ventilators includes air intake band and exhaust blower, and the air intake band is located above water unit, and tank body is except knot herein
It is opening outside structure, has the circular tank body stainless steel plate of one week to be used to prevent filterins media run-off at air intake band；The exhaust blower is located at
The top in filter tank, for forming air stream from bottom to top in filter material layer, supplied oxygen for filter material layer.
The oxygen supply of the present apparatus includes two parts, and one is oxygen supply of the unit ventilators to filter material layer, secondly being cleaned for filtrate
Oxygen supply of the unit during cleaning and lifting filtrate；
The oxygen supply of unit ventilators is formed mainly using the ventilation blower at the top of the tank body air intake band of one week and filter tank in filter material layer
Air stream from bottom to top, at the same using filtrate space shear action and filtrate top layer moisture film carry out efficient oxygen transmission,
The oxygen of abundance is provided for the biochemical action of microorganism.
The oxygen supply of cleaning unit mainly utilizes oxygenation of the air to water, and filtrate top layer forms heavy-oxygen-enriched water after cleaning
Film.
The water unit is located at the bottom of air intake band, to surround the tank body effluent trough of one week, is shared with air intake band stainless
Steel porous plate, more than filter tank water level it is air intake band, is used as water outlet filter plate below water level, prevents filterins media run-off, water unit passes through
Overflow pipe water outlet, overflow pipe absolute altitude is adjustable, for adjusting the circulation rate of filter tank water level and filtrate.When overflow pipe absolute altitude is turned down
When, whole filter material layer can decline therewith, and into the filtrate amount increase of cleaning unit, the speed of filtrate circulation is accelerated, otherwise overflow
When pipe absolute altitude is heightened, filter material layer rises, and the filtrate amount into cleaning unit is reduced, and filtrate circulation rate reduces, and this absolute altitude is visual
Depending on the cleaning strength and the frequency of filtering layer pollution level adjustment filtrate.
The filtrate cleaning unit is located at the lower floor of filtering material unit, predominantly an inverted funnel form, affiliated funnel
Bottom be higher than the bottom of filter material layer in water, including air-water flushing mechanism, solid-liquid separation device and airlift mechanism.
In tank body after light filling filtrate and water-filling, light filter material can overflow funnel automatically due to the effect of buoyancy,
The bottom of the funnel sets a circle perforation air hose, as flushing out air pipe.
The air-water flushing mechanism is in the three phase separator filtrate cleaning area of cone, in the case where rinsing the auxiliary of baffle plate, leads to
Cross air water to filtrate wash away and the disturbance of current filtrate is rinsed, can occur between filtrate mutually collision and friction,
The pollutant for enabling to adhere between filtrate top layer and filtering material particle strips down, subsequently into solid-liquid separation device；The solid-liquid
Separating mechanism is inclined pipe structrue, carries out the separation of solid, liquid, gas and filtrate using the principle of shallow layer settling, said light filtrate exists
Upward by filtrate passage in the presence of air lift and buoyancy, the pollutant stripped down is settling anti-tampering vertebra by spoil disposal passage
It is precipitated under body auxiliary in sludge bucket；The airlift mechanism makes the light filter material after gas and cleaning in central tube with gas
The mode carried is overflowed at the top of the filtrate riser, updates top layer light filter material, with the increase of filtering layer top filtrate, in filtering layer in itself
Continuously circulation can be washed in the presence of gravity constantly by the filtrate press-in funnel of bottom so as to form one.
Apparatus of the present invention are much smaller than the density of water using light filter material, the filtrate density, due to the buoyancy of water, filter
When material is accumulated in water, most of filtrate can be formed and be located at more than the water surface, small part filtrate is located at the distribution below the water surface.
As filtrate heap density presses 0.1g/cm3Exemplified by, then filtrate high 3m will have 0.3m positioned under water, and 2.7m is located at more than the water surface.
The spoil disposal unit is located at the bottom in filter tank, the further sedimentation for the pollutant isolated for filtrate cleaning unit
And storage, and periodically discharged by discharge pipeline；
Beneficial effect：
1st, treatment effeciency is high, and effluent quality is good
Because apparatus of the present invention are run by the way of continuous wash, the high activity of the biomembrane on filtrate top layer can be kept, simultaneously
With reference to the application of our company's high-effective microorganism, it is ensured that system is constantly in efficient running status, simultaneously because filtrate is cut
Use is given over to, the water outlet solid suspended particles of apparatus of the present invention can maintain relatively low level；
2nd, water distribution is uniform
Water distribution unit described in apparatus of the present invention is located at the top of filter material layer, and water inlet directly can be contacted fully with the filtrate after cleaning,
Uniformly it is attached to every filtrate top layer and forms moisture film；
3rd, filter material layer is constantly updated, and is not blocked, not short stream
Traditional biofilter is by pond type, filter material layer blocks, water distribution is uneven, backwash is insufficient etc. influences, and it is existing that short stream easily occurs
As causing treatment effect bad.Apparatus of the present invention filtrate is continuous wash, and filter material layer is constantly updated from top to bottom, is at one
In dynamic renewal filter material layer, in the absence of traditional filter tank block, short stream the problems such as；
4th, oxygen supply is sufficient, and energy consumption is low；
Apparatus of the present invention filtrate is predominantly located in more than the water surface, is substantially at the state of void tower operation, can by air intake/outtake system
Good aerobic environment is formed in filter material layer, and filtrate specific surface area is big, filtrate top layer only has very thin moisture film, plus air
Flowing, the mass-transfer efficiency of oxygen can be greatly improved, good working environment is provided for microorganism.Simultaneously because filtrate layer resistance
It is small, Wind Volume can be used, the ventilation blower of low blast is taken a breath, not only the sufficient oxygen supply of guarantee filtering layer, and system operation
Energy consumption is low；
5th, simple in construction, operational management is conveniently
Apparatus of the present invention inner inorganic tool equipment, in the absence of overhaul of the equipments and the work safeguarded；
6th, it is applied widely
Apparatus of the present invention can be used for common municipal wastewater processing, advanced treatment of wastewater, high-concentration hardly-degradable waste water processing etc.；In height
The means such as water circulation, plural serial stage can be used to obtain good effect in concentration wastewater treatment out.
Preferably, the invention present apparatus can be used by complete aerobic BAF, can also be filtered by the denitrification of anoxic
Pond or oxygen compatibility pool use, and both differences are only whether to open unit ventilators；
Preferably, according to influent quality situation, water inlet system can use the water distribution form of cloth water channel+cloth mill weir, perforated pipe spray
Drench water distribution form, or shower nozzle water distribution form etc.；
Preferably, the filtrate in tank body also can be by the way of screw lifting, continuous updating, to avoid the blocking in filter tank and carry
High water treatment efficiency.
Preferably, apparatus of the present invention can increase in addition using ventilating opening as air inlet, axle air vent as exhaust outlet
Add related auxiliary equipment, using apparatus of the present invention as a kind of waste gas treatment equipment, this scheme separately as a patent separately
Application.
Brief description of the drawings
Accompanying drawing 1 is patent sectional structure chart of the present invention；
Accompanying drawing 2 is the water (flow) direction in patent tank body running of the present invention；
Accompanying drawing 3 is the direction of ventilation of patent tank body of the present invention；
Accompanying drawing 4 cleans direction for the filtrate of patent tank body of the present invention；
Accompanying drawing 5 is patent tank body inner circle cone three phase separator of the present invention；
Accompanying drawing 6 is the ring-type section expanded view of accompanying drawing 5.
Accompanying drawing 7 is the A-A section top plan views of accompanying drawing 5.
Accompanying drawing 8 is the B-B sections bottom top view of accompanying drawing 5.
Wherein, 1, tank body；2nd, water inlet pipe；3rd, water distribution unit；4th, air inlet；5th, propeller fan；6th, perforation air hose；7、
Cone three phase separator；8th, anti-tampering centrum is settled；9th, filtrate cleaning area；10th, sludge discharging area；11st, filtrate riser；12nd, it is light
Matter filtrate；13rd, effluent weir；14th, adjustable overfall；15th, outlet pipe；16th, waterline；17th, filtrate purging system；18th, it is dirty
Bucket；19th, precipitating sludge；20th, discharge pipeline；21st, air duct；22nd, loose structure；23rd, filtrate passage；24th, discharge pipeline；25、
Rinse baffle plate；
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
First in tank body（1）Interior a certain amount of spherical, the apparent density 0.1g/cm of filling3Light filter material（12）, pretreatment
Raw water passes through water inlet pipe under pump and Action of Gravity Field（2）Pass through water distribution unit（3）To water is flowed under formation, due to light filter material
Apparent density is much smaller than water, and therefore, light filter material is submerged in 1/10 in water, and 9/10 swims in waterline（16）More than,
Propeller fan（5）In the presence of, make tank body（1）Interior formation air negative pressure, then by being arranged on tank body（1）The air intake at middle part
Mouthful（4）Make tank body（1）Interior formation air stream, makes tank body（1）Interior light filter material（12）Oxygen-enriched state is kept, efficiently retention, degraded
Pollutant in raw water, the water after processing is up to standard is by being arranged on tank body（1）The effluent trough at middle part（13）Form unified water level
Line（16）, in effluent trough（13）It is interior that adjustable overfall is set（14）, water outlet passes through adjustable overfall（14）By water outlet
Pipe（15）Discharge, while can be by setting adjustable overfall（14）Height, to set tank body（1）Interior waterline（16）
Highly, tank body is suitably changed（1）Interior water level, in the case where amount of inlet water is constant, it can adjust light filter material（12）Circulation
Than waterline（16）The low light filter material for then entering funnel（12）More, circulation rate is fast, waterline（16）Height, then into funnel
Light filter material（12）Few, circulation rate is slow.
After process operation is debugged, automatic continuous cleaning procedure is set, during flushing, passes through air hose of perforating（6）Drum
Wind aeration acts on, in filtrate purging system（17）It is interior, rinsing baffle plate（25）Booster action think, light filter material（12）Generation phase
Mutually collision, friction, by strong flushing, settling anti-tampering centrum（8）Protective effect under, sludge can pass through under gravity
Spoil disposal passage（24）Natural subsidence is to sludge bucket（18）In, light filter material（12）Pass through cone in the presence of buoyancy and air lift
Three phase separator（7）The porous interface of middle setting（22）In filtrate passage（23）, gather upwards, and pass through filtrate riser
（11）Filtrate top layer is directly delivered to by overflow, makes light filter material（12）Constantly update, can both keep filtrate top layer biomembrane
High activity, and can prevent filter material layer from blocking, and aeration rinses light filter material（12）While, the water loading of oxygenation is in light filter material
（12）Top layer forms oxygen-enriched moisture film, can also be supplied oxygen, so, ideally realize the three phase separations of solid, liquid, gas.
Work as tank body（1）Base sludge bucket（18）Store a certain amount of precipitating sludge（19）Afterwards, valve is opened, passes through discharge pipeline
（20）Sludge is discharged.
Certainly, described example is only an example of the invention, is not represented all, nor the protection to the present invention limits
Fixed, based on embodiments of the invention, ordinary professional and technical personnel in the art is not before creative work is made, according to this implementation
The same energy that the mentality of designing of example is done changes, the other embodiment obtained, each falls within the protection domain of this case.
Claims (8)
1. a kind of floating media filter, including the cleaning of tank body, water distribution unit, filtering material unit, unit ventilators, water unit, filtrate
Unit and spoil disposal unit, it is characterised in that for the invention device in addition to air inlet and ventilating opening, remaining is confined space, is filled out in tank body
Light filter material is filled, top is without filter plate.
2. a kind of floating media filter according to claim 1, it is characterized in that the water distribution unit is located at the top of tank body,
The top of packing layer, carry out water distribution uniformity.
3. a kind of floating media filter according to claim 1, it is characterised in that the filtering material unit is located in tank body
Portion, using light granules filtrate, particle diameter of filter medium is 2 ~ 20mm, and apparent density is 0.04 ~ 0.15g/cm3, thickness up to 4-10m,
For the main biochemical reaction member in filter tank.
A kind of 4. floating media filter according to claim 1, it is characterised in that the unit ventilators include air intake band and
Exhaust blower, wherein the air intake band is located above water unit, tank body is used to prevent in addition to structure for stainless steel porous plate herein
Only filterins media run-off, water outlet and air inlet；The exhaust blower is located at the top in filter tank, for forming sky from bottom to top in filter material layer
Air-flow, supplied oxygen for filter material layer.
5. a kind of floating media filter according to claim 1, it is characterised in that the water unit is located at air intake band
Bottom, to surround the tank body effluent trough of one week, and the shared stainless steel porous plate of air intake band more than filter tank water level is air intake band, water
Position is following to be used as water outlet filter plate, prevents filterins media run-off, water unit is by overflow pipe water outlet, and overflow pipe absolute altitude is adjustable, for adjusting
The circulation rate of filter tank water level and filtrate is saved, when overflow pipe absolute altitude is turned down, whole filter material layer can decline therewith, single into cleaning
The filtrate amount increase of member, the speed of filtrate circulation is accelerated, otherwise overflow pipe absolute altitude is heightened, filter material layer rises, single into cleaning
The filtrate amount of member is reduced, and filtrate circulation rate reduces, the cleaning strength and frequency of the visual filtering layer pollution level adjustment filtrate of this absolute altitude
Depending on secondary.
6. a kind of floating media filter according to claim 1, it is characterised in that the filtrate cleaning unit is located at filtrate
Below unit, including air-water flushing mechanism, solid-liquid separation device and airlift mechanism, the air-water flushing mechanism is in filtrate
Cleaning area by air to filtrate wash away and the disturbance of current is rinsed to filtrate, make attached between filler top layer and filtrate
The pollutant is stripped down；The solid-liquid separation device is inclined pipe structrue, using the principle of shallow layer settling carry out it is solid,
The separation of liquid, gas and filtrate, light filter material move upwards in the presence of air lift and buoyancy, under the sedimentation such as SS stripped down
Come；The airlift mechanism make gas and cleaning after light filter material in central tube in a manner of air lift from filtrate riser
Top is overflowed, and filtrate is cyclically updated with this.
7. a kind of floating media filter according to claim 1, it is characterised in that the spoil disposal unit is located at the bottom in filter tank
Portion, the further sedimentation and storage of the pollutant isolated for filtrate cleaning unit, and periodically excluded by discharge pipeline；
8. a kind of floating media filter according to claim 1, it is characterised in that light filter material is before no filter plate
Put, filtrate is circulated from bottom to top by way of buoyancy and air lift, constantly updated.
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| CN201711020545.9A CN107555614A (en) | 2017-10-27 | 2017-10-27 | A kind of floating media filter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109081442A (en) * | 2018-10-29 | 2018-12-25 | 上海溪昌环境工程有限公司 | A kind of light filter material high-efficient biological reactor |
| CN111233256A (en) * | 2020-01-16 | 2020-06-05 | 广州鹏凯环境科技股份有限公司 | Satellite type distributed sewage treatment system and sewage treatment method |
| CN114057323A (en) * | 2021-10-14 | 2022-02-18 | 中机国际工程设计研究院有限责任公司 | Floc reflocculation suspension quick filtering device |
| CN114906988A (en) * | 2022-05-18 | 2022-08-16 | 南京林业大学 | Landscape pool with ecological environment circulating restoration function in park and restoration method thereof |
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| CN205127494U (en) * | 2015-10-12 | 2016-04-06 | 成都汉昆环保设备有限公司 | High efficiency flows sand filter in succession |
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