CN109264938A - Carbon sand filter - Google Patents
Carbon sand filter Download PDFInfo
- Publication number
- CN109264938A CN109264938A CN201811471394.3A CN201811471394A CN109264938A CN 109264938 A CN109264938 A CN 109264938A CN 201811471394 A CN201811471394 A CN 201811471394A CN 109264938 A CN109264938 A CN 109264938A
- Authority
- CN
- China
- Prior art keywords
- carbon
- sand filter
- water
- backwash
- grain size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000004576 sand Substances 0.000 title claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000006004 Quartz sand Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims description 34
- 239000000706 filtrate Substances 0.000 claims description 24
- 238000005406 washing Methods 0.000 claims description 21
- 238000002386 leaching Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 13
- 238000010926 purge Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 2
- 238000011001 backwashing Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 239000003610 charcoal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000009298 carbon filtering Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000009287 sand filtration Methods 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- -1 turbidity Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F3/02—Aerobic processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a carbon sand filter, which comprises a filter module and a backwashing module, wherein the filter module comprises a water inlet and distribution tank, a filter area and a gas-water distribution chamber, the backwashing module comprises a backwashing water inlet pipe, a backwashing air inlet pipe, a gas-water distribution tank and a water discharge tank, the filter area comprises at least two layers of filter materials, an active carbon filter material is positioned on the upper layer, and a quartz sand filter material is positioned on the lower layer.
Description
Technical field
The present invention relates to water treatment fields, and in particular to a kind of Carbon-sand filter.
Background technique
In water treatment field, advanced treating refers to after conventional handling technology of water supply, passes through certain treatment process
Continue in water removal, the pollutants such as turbidity, organic matter and ammonia nitrogen.It studies more in advanced treatment process and applies in engineering
Wider technique is Ozone-Biological Activated Carbon Process.The technique is arranged after sand filter, by ozone oxidation and biological activated carbon
Filter tank combination further removes the organic matter in water removal by ozone oxidation, active carbon physical and chemical adsorption and biodegradation
And ammonia nitrogen, effluent quality is improved comprehensively.In recent years, the water outlet safety issue of Ozone-Biological Activated Carbon Process is gradually closed
Note: the problem of being on the one hand ozone oxidation by-product；It on the other hand is since activated carbon process " biology leakage " causes to be discharged
Biosafety issues.
For reduction " biology leakage " risk, the way generallyd use at present is as follows:
By one layer of quartz sand be added to it is lower to stream activated carbon filter in, i.e., conventional carbon pond layer of charcoal lower part lay one layer
Quartz sand improves the stability of active carbon pond water outlet to improve the interception effect to bacterium and particulate matter.However, such " living
Property carbon filtering pool " simply just increase one layer of quartz sand, although improve to a certain extent active carbon pond water outlet stability,
But since the effective grain size of quartz sand is identical as conventional sand filter, generally in 0.7~1.0mm range, and and seed activity
Charcoal is close, causes backwash effect generally undesirable, exist backwash washing intensity it is excessive, active carbon loss problem.In addition, such as
Backwash washing intensity is reduced, sand filter blanket backwash is difficult to prove effective completely again, and easily causes mixed layer, and sand bedding course is made to lose work completely
With.
Active carbon pond and sand filter are inverted, i.e., active carbon pond is set to before sand filter.In this way, advanced treating rank
Section additionally increases level-one sand filtration processing due to being generally difficult to receive, and the influent quality in ozone-active carbon pond certainly will be deteriorated.To reduce
Thus to lower the problem of bringing to stream active carbon pond, such as dirty stifled speed is fast, and backwash frequency height etc., many newly-built or reconstruction projects are adopted
It is designed with upward flow pond type.But this system has the disadvantage in that and 1) requires to improve to prime coagulation, flocculation and clarifying treatment；
2) ozone contact arrangement anti-pollution blocks up Capability Requirement raising afterwards, and ozone consumption is increased slightly；3) the optional range of granular activated carbon product
Reduce (highest design filtering velocity has to be lower than expansion filtering velocity, to avoid active carbon loss).
Summary of the invention
The present invention provides a kind of Carbon-sand filter, including filtering module and backwash module, filtering module includes that water inlet is matched
The gentle water distributor chamber of sink, filtering area.
Filtering area includes at least two layers of filtrate, and carbon leaching material is located at upper layer, and quartz sand filter media is located at lower layer, and feature exists
In the effective grain size of, carbon leaching material and the effective grain size of quartz sand filter media according to the density of carbon leaching material and quartz sand filter media
Difference and determine.
Air water distributor chamber includes filter, filter plate and supporting layer, arranges that more filters, supporting layer are mounted on filter plate on filter plate
It is square, active carbon and quartz sand filter media are filled on supporting layer.
Preferably, water inlet water distributing trough is U-type groove, and U-type groove also has the function of that backwash waste is discharged.
Preferably, water inlet water distributing trough is V-groove.
Preferably, recoil air purge and the intensity of recoil washing are according to the effective grain size of carbon leaching material and quartz sand filter media
Effective grain size and determine.
Preferably, the time of recoil air purge and recoil washing is according to the effective grain size of carbon leaching material and quartz sand filter media
Effective grain size and determine.
Preferably, the effective grain size of carbon leaching material is 0.7-2.0mm.
Preferably, the effective grain size of carbon leaching material is 0.9-1.8mm.
Preferably, the effective grain size of quartz sand filter media is 0.25mm-0.75mm.
Preferably, the effective grain size of quartz sand filter media is 0.28mm or 0.55mm.
Preferably, the top surface of the slot to the distance between the top surface of carbon leaching material of filtering area for carbon leaching material and
The 35%-40% of the overall thickness of quartz sand filter media.
Detailed description of the invention
In the preferred embodiment of the present invention being described in detail with reference to the accompanying drawing, advantages and objects of the present invention can be obtained
To more fully understanding.In order to preferably show the relationship of each component in the accompanying drawings, attached drawing is not necessarily drawn to scale.In attached drawing:
Fig. 1 shows the schematic diagram of the Carbon-sand filter of first embodiment according to the present invention.
Fig. 2 shows the distributing channel of the Carbon-sand filter of first embodiment according to the present invention and U-type grooves.
Fig. 3 shows the sectional view of the line F-F interception along Fig. 2.
Fig. 4 is shown in filtration stage, the operation schematic diagram of Carbon-sand filter according to first embodiment.
Fig. 5 is shown in backwash stage, the operation schematic diagram of Carbon-sand filter according to first embodiment.
Fig. 6 shows the schematic diagram of the Carbon-sand filter of second embodiment according to the present invention.
Fig. 7 is shown in filtration stage, the operation schematic diagram of Carbon-sand filter according to the second embodiment.
Fig. 8 is shown in backwash stage, the operation schematic diagram of Carbon-sand filter according to the second embodiment.
Specific embodiment
It will be described in detail with reference to the accompanying drawings each embodiment according to the present invention.Here it is to be noted that it in the accompanying drawings,
It assigns identical appended drawing reference to component part substantially with same or like structure and function, and will omit about it
Repeated description.Term " successively including A, B, C etc. " only indicates putting in order for included components A, B, C etc., does not arrange
A possibility that except including other components between A and B and/or between B and C.
The attached drawing of this specification is schematic diagram, aids in illustrating design of the invention, it is schematically indicated the shape of each section
And its correlation.
Fig. 1-5 shows the Carbon-sand filter of first embodiment according to the present invention.Referring to Fig. 1, Carbon-sand filter includes filter module
Block and backwash module.Filtering module includes that water inlet water distributing trough (is in the present embodiment U-type groove, has multiple lateral water inlets
Water distributing trough) 1, the gentle water distributor chamber 14 of filtering area 13.In the present embodiment, U-type groove also exists other than the effect of water inlet water distribution
Backwash stage plays the role of that backwash waste (as shown in Figure 5) is discharged.The inlet valve 11 of U-type groove 1 and Carbon-sand filter connects
It connects, receives water inlet.Referring to fig. 4, filtering area 13 includes that (upper layer is carbon leaching material at least two layers of filtrate, and lower layer is quartzy sand filtration
Material), this two layers of filtrate is located at 17 top of supporting layer.Air water distributor chamber 14 is located at below filtering area, and is symmetrical set, and wraps
Filter plate 15 and filter 18 are included, multiple filters 18 are evenly arranged on filter plate 15, supporting layer 17 is located at 15 top of filter plate.
Referring to Fig. 1, backwashing module includes backwash water inlet pipe 7, backwash air inlet pipe 4, backwash air-water distribution tray 19
With backwash rhone 21.It backwashes water inlet pipe and backwashes the air-water distribution tray 19 of air inlet pipe and filter tank bottom (such as Fig. 4 institute
Show) it connects, air-water distribution tray is allocated backwashing water and backwash gas, then enters air water point via air water dispensing orifice 20
With in room 14, water distribution and distribution are carried out by the filter of air water distributor chamber.Referring to fig. 4, backwash rhone 21 is positioned at air water point
Above slot allocation, and it is connected to backwashing wastewater pond 10 for example, by back flush valves 2.
It is connect via backwash pump 8 with backwash pond 9 in addition, also showing backwash water inlet pipe 7 in Fig. 1, thus
Backwash pond pumps water into backwash water inlet pipe 7 via backwash pump 8.Water after filter is via water after filter
Regulating valve 6 is discharged to water after filter outlet 12, and as shown in Figure 1, filtered water can also pass into recoil wash pool to serve as instead
Flushing water.Backwash air inlet pipe 4 is connected to air blower 5, and backwash gas can be discharged when opening in backwash exhaust valve 3.Initial filter
Water valve 16 can be used for carrying out inceptive filtering to backwashing water.Backwash water level L1 and filtering water level L2 are also shown in Fig. 1.
Fig. 2 shows the sectional view of the distributing channel 22 of Carbon-sand filter and U-type groove 1, Fig. 3 shows the transversal F-F interception along Fig. 2
Sectional view, it can be seen that lateral U-type groove is evenly distributed on the two sides of distributing channel from Fig. 2 and Fig. 3, the water of distributing channel is via U
Type groove enters filter tank, and U-type groove ensures that water flow being uniformly distributed on filter bed is consistent with filtering velocity.Meanwhile the setting of U-type groove prevents
Backwash water rinses due on weir hydraulic loading it is higher, cause filtrate to be taken away by water flow.
Fig. 4 is described in filtration stage, the course of work of Carbon-sand filter according to first embodiment.After filtering starts,
Water flow flows into filter tank via distributing channel and evenly arranged U-type groove, so that microorganism is attached on the filter bed being made of active carbon
Fixed biofilm is formed, water flow passes through filter bed, effect of the remaining a small amount of organic matter in biomembrane and oxygen in water
Lower progress biodegrade, micro- Organic Pollutants and cause Taste and odor compounds then carry out physical absorption by granular activated carbon；It is living by particle
The water of property layer of charcoal continues to pass through quartzy sand filter blanket, subtle from the biomembrane and water that seed activity layer of charcoal falls off
Grain object is retained by sand filter blanket；The water filtered through quartzy sand filter blanket continue down through gravel supporting layer and through filter enter filter plate it
Under clear water zone.Finally, pond body is discharged by outlet pipe in filtered water.
It should be noted that in the present invention, the effective grain size range of granular activated carbon and quartz sand according to the density contrast of the two and
It determines, and the partial size and specific gravity of the partial size of granular activated carbon and specific gravity and quartz sand classification side after washing expansion rate and washing
Face matches each other.In general, the bulk density of quartz sand is 1.5-1.7g/cm3, the bulk density of granular activated carbon is 0.4-
0.6g/cm3.The effective grain size of granular activated carbon is 0.7-2.0mm, it is therefore preferable to 0.9-1.8mm, coefficient of uniformity are not more than 1.5,
Preferably not more than 1.4, the height of seed activity layer of charcoal is 1.0-2.5m, it is therefore preferable to 1.5-2.2m.Effective grain of quartz sand
Diameter is 0.25mm-0.75mm, it is therefore preferable to which 0.28mm or 0.55mm, the height of quartz sand layer are 0.3-0.5m.In addition, gravel is held
The partial size for holding in the palm layer is 4x8mm, is highly 100-150mm, and filling requires to guarantee that the supporting layer can cover filter and avoid filter
Blocking.
Fig. 5 is described in backwash stage, the course of work of Carbon-sand filter according to first embodiment.Start in backwash
Afterwards, it is first shut off inlet valve 11 and stops water inlet, while keeping the opening state of water after filter regulating valve 6 constant, it is straight to continue filtering
Liquid level in filter tank is down to filter material surface, is then shut off water after filter regulating valve 6.Then, start air blower 5, open intake valve
Backwash gas is set to enter backwash air inlet pipe 4.Backwash gas initially enters air-water distribution tray 19, and air-water distribution tray is to backwash gas
It is allocated, then enters in air water distributor chamber 14 via air water dispensing orifice 20, air cushion layer is formed below filter plate 15, in the rank
It is 20~30Nm that section, which can control charge flow rate,3/(m2.h) so that bubble is uniform.Then, charge flow rate is increased to 50~
60Nm3/(m2.h), stirring water flow and filtrate by air-flow makes filtrate be in fluidized suspension state, the friction removing between filtrate
The biomembrane that adheres on grain carbon leaching material accumulates in biomembrane and fine particulates that aging between filtrate falls off by air-flow water
Band is flowed to upper layer, and gas rushes the time and lasts about 4~6 minutes greatly.Then, stop backwash gas, open exhaust valve 3 and exclude air cushion layer.
After recoil air purge terminates, start backwash pump 8, according to the effective grain size of granular activated carbon and quartz sand
Determine recoil washing intensity and recoil washing time, such as maximum recoil washing intensity is 30-40m/h, in recoil water rinses,
Filter bed is allowed to have the expansion rate of 20%-40%, it can be ensured that be classified again in the filtrate that the air purge stage mixes.Certainly, it filters
The expansion rate of bed is affected by many factors, such as partial size, density, water temperature and the recoil washing intensity of filtrate.Recoil washing
The sewage overflow of generation is ultimately discharged into backwash waste pond to backwash rhone 21.
The selection of two kinds of filtrates through the invention, can to filter out that water turbidity is low, and intensity is washed in required recoil
It is low, and after recoiling washing, the mixing proportion of two kinds of filtrates is small.For example, when granular activated carbon is with a thickness of 500mm, stone
Sand is with a thickness of 300mm, and when water temperature is 15 DEG C, best recoil washing intensity is 30-40m/h, and the expansion rate of two kinds of filtrates is 15-
25%, in two kinds of filtrate sedimentation post blend ratios less than 15%.Distance of the U-type groove top surface of Carbon-sand filter to active carbon filtering layer top surface
It is the 35~40% of whole filtrate thickness, can satisfy the requirement of backwash expansion rate in this way.
The granular activated carbon of Carbon-sand filter of the invention and the effective grain size range of quartz sand according to the density contrast of the two and
Selection, and the partial size and specific gravity of the partial size of granular activated carbon and specific gravity and quartz sand classification side after washing expansion rate and washing
Face matches each other, so that their degrees of expansion is almost the same when flushing water flow is identical, them is made to restart to filter
Good classification was retrieved in the past.
Carbon-sand filter shown in Fig. 1 to Fig. 5 has U-type groove, is mainly used for filter tank width big (being greater than 4m) or recoil
The case where washing intensity high (being greater than 25m/h).Fig. 6 to Fig. 8 shows the Carbon-sand filter of second embodiment according to the present invention.
The main distinction of the Carbon-sand filter of the Carbon-sand filter and first embodiment of the second embodiment is the charcoal sand filtration of second embodiment
There is V-groove to replace U-type groove in pond.
As shown in fig. 6, Carbon-sand filter includes filtering module and backwash module.Filtering module includes for distributing trough of intaking
1 ' (being in the present embodiment V-groove), the gentle water distributor chamber 14 of filtering area 13.In the present embodiment, V-groove is in addition to water distribution of intaking
Effect except, also have the function of surface sweep washing in backwash stage, can accelerate will in filtrate backwash arrive the water surface biology
Film and suspended matter run through backwashing wastewater pipe and drain, and substantially reduce the backwash time and have saved water.V-groove 1 ' and charcoal
The inlet valve 11 of sand filter connects, and receives water inlet.Referring to Fig. 7, filtering area 13 includes that (upper layer is active carbon at least two layers of filtrate
Filtrate, lower layer are quartz sand filter media), this two layers of filtrate is located at 17 top of supporting layer.Air water distributor chamber 14 is located at below filtering area,
And it is symmetrical set, including filter plate 15 and filter 18, multiple filters 18 is evenly arranged on filter plate 15, supporting layer 17 is located at filter
15 top of plate.
Referring to Fig. 6, backwashing module includes backwash water inlet pipe 7 and backwash air inlet pipe 4.Backwash water inlet pipe and recoil
It washes air inlet pipe to connect with the air-water distribution tray 19 (as shown in Figure 8) of filter tank bottom, air-water distribution tray is to backwashing water and backwash
Gas is allocated, and is then entered in air water distributor chamber 14 via air water dispensing orifice 20, is matched by the filter of air water distributor chamber
Water and distribution.Referring to Fig. 6, backwash rhone 21 and be located at air-water distribution tray top, and with backwashing wastewater pond 10 for example, by
Back flush valves 2 are connected to.
It is connect via backwash pump 8 with backwash pond 9 in addition, also showing backwash water inlet pipe 7 in Fig. 6, thus
Backwash pond pumps water into backwash water inlet pipe 7 via backwash pump 8.Water after filter is via water after filter
Regulating valve 6 is discharged to water after filter outlet 12, and as shown in fig. 6, filtered water can also pass into recoil wash pool to serve as instead
Flushing water.Backwash air inlet pipe 4 is connected to air blower 5, and backwash gas can be discharged when opening in backwash exhaust valve 3.Initial filter
Water valve 16 can be used for carrying out inceptive filtering to backwashing water.Backwash water level L1 and filtering water level L2 are also shown in Fig. 6.
Fig. 7 shows Carbon-sand filter according to a second embodiment of the present invention in the course of work of filtration stage, the work in the stage
It is similar with the course of work of Carbon-sand filter according to first embodiment of Fig. 4 to make process, details are not described herein.
Fig. 8 shows Carbon-sand filter according to a second embodiment of the present invention in the course of work of backwash stage, the stage
The course of work is similar with the course of work of Carbon-sand filter according to first embodiment of Fig. 5.It should be noted that in backwash
Still V-groove is kept to intake, the surface auxiliary intake in this way by raw water, which sweeps to wash, can accelerate the biology of backwash in filtrate to the water surface
Film and suspended matter run through backwashing wastewater pipe and drain, and substantially reduce the backwash time and have saved water.Backwashing wastewater
The wedge shape buffering effluent weir in groove top portion, can effectively avoid filterins media run-off.Similarly, the draining wedge groove of the V-groove of Carbon-sand filter
The distance of top surface to active carbon filtering layer top surface is the 35~40% of whole filtrate thickness, can satisfy backwash expansion rate in this way
It is required that.
The foregoing describe Carbon-sand filters of the invention, have the advantages that
Corresponding particle diameter of filter medium is designed according to the density contrast of different filtrates, and designs corresponding back washing strength, it is significant to drop
Low biological disclosure risk, effluent quality is good, and turbidity is low (to be ensured to be lower than 0.1NTU mostly lower than 0.2NTU, save subsequent sand
Filter or film process；
The recoil washing more conventional Carbon-sand filter of intensity is low, and granular activated carbon is substantially without loss, backwash effect in backwash process
Fruit is good, and granular activated carbon and quartz sand filter media boundary are clear after backwash, without mixed layer phenomenon；
Due to backwash effect is good, without filterins media run-off, Carbon-sand filter can work several years Maintenance free or supplement filtrate.
Moreover, each technical characteristic of above-mentioned disclosure is not limited to disclosed and other feature combination, art technology
Personnel can also carry out other combinations between each technical characteristic according to goal of the invention, be subject to realize the present invention purpose.
Claims (10)
1. a kind of Carbon-sand filter, including filtering module and backwash module, filtering module are gentle including water inlet water distributing trough, filtering area
Water distributor chamber, backwash module include backwash water inlet pipe and backwash air inlet pipe, and filtering area includes at least two layers of filtrate, activity
Carbon filtration material position is located at lower layer in upper layer, quartz sand filter media, which is characterized in that the effective grain size and quartz sand filter media of carbon leaching material
Effective grain size determined according to the density contrast of carbon leaching material and quartz sand filter media.
2. Carbon-sand filter as described in claim 1, which is characterized in that water inlet water distributing trough is U-type groove, while being played into water water distribution
With the effect in backwash stage discharge backwash waste.
3. Carbon-sand filter as described in claim 1, which is characterized in that water inlet water distributing trough is V-groove, while being played into water water distribution
With the effect for carrying out surface sweep washing in backwash stage.
4. Carbon-sand filter as claimed any one in claims 1 to 3, which is characterized in that recoil air purge and the strong of washing of recoiling
Degree is determined according to the effective grain size of carbon leaching material and the effective grain size of quartz sand filter media.
5. Carbon-sand filter as claimed any one in claims 1 to 3, which is characterized in that recoil air purge and recoil washing when
Between determined according to the effective grain size of carbon leaching material and the effective grain size of quartz sand filter media.
6. Carbon-sand filter as claimed any one in claims 1 to 3, which is characterized in that the effective grain size of carbon leaching material is
0.7-2.0mm。
7. Carbon-sand filter as claimed in claim 6, which is characterized in that the effective grain size of carbon leaching material is 0.9-1.8mm.
8. Carbon-sand filter as claimed any one in claims 1 to 3, which is characterized in that the effective grain size of quartz sand filter media is
0.25mm-0.75mm。
9. Carbon-sand filter as claimed any one in claims 1 to 3, which is characterized in that the effective grain size of quartz sand filter media is
0.28mm or 0.55mm.
10. Carbon-sand filter as described in claims 1 to 3, which is characterized in that the active carbon filtration of the top surface of the slot to filtering area
The distance between top surface of material is the 35%-40% of the overall thickness of carbon leaching material and quartz sand filter media.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471394.3A CN109264938A (en) | 2018-12-03 | 2018-12-03 | Carbon sand filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471394.3A CN109264938A (en) | 2018-12-03 | 2018-12-03 | Carbon sand filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109264938A true CN109264938A (en) | 2019-01-25 |
Family
ID=65186741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811471394.3A Withdrawn CN109264938A (en) | 2018-12-03 | 2018-12-03 | Carbon sand filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109264938A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456679A (en) * | 2020-11-18 | 2021-03-09 | 安徽汇泽通环境技术有限公司 | Device and method for treating disinfection byproducts by mesoporous carbon reinforced carbon sand filter |
| CN112717537A (en) * | 2020-10-13 | 2021-04-30 | 董正中 | Decolorizing device and method used in process of producing vehicle urea |
| CN113769445A (en) * | 2021-08-25 | 2021-12-10 | 河北中瀚水务有限公司 | Intelligent common rapid filter tank system with air flushing and filtering method |
| CN115520972A (en) * | 2022-10-27 | 2022-12-27 | 上海城投水务（集团）有限公司制水分公司 | Device and method for regulating and controlling leakage of micro-animals in biological activated carbon filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244867A (en) * | 2008-03-25 | 2008-08-20 | 华南理工大学 | Downflow double-layer filter material aerating biological filter and method for using the filter chamber to process raw water |
| WO2015046056A1 (en) * | 2013-09-25 | 2015-04-02 | 三菱重工業株式会社 | Biofilm filtration device and backwash method for biofilm filtration device |
| CN105060476A (en) * | 2015-08-14 | 2015-11-18 | 得利满水处理***(北京)有限公司 | V-shaped filter tank for deep denitrogenation |
| CN105130105A (en) * | 2015-08-14 | 2015-12-09 | 得利满水处理***(北京)有限公司 | Gas - water joint backwashing system and process |
-
2018
- 2018-12-03 CN CN201811471394.3A patent/CN109264938A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244867A (en) * | 2008-03-25 | 2008-08-20 | 华南理工大学 | Downflow double-layer filter material aerating biological filter and method for using the filter chamber to process raw water |
| WO2015046056A1 (en) * | 2013-09-25 | 2015-04-02 | 三菱重工業株式会社 | Biofilm filtration device and backwash method for biofilm filtration device |
| CN105060476A (en) * | 2015-08-14 | 2015-11-18 | 得利满水处理***(北京)有限公司 | V-shaped filter tank for deep denitrogenation |
| CN105130105A (en) * | 2015-08-14 | 2015-12-09 | 得利满水处理***(北京)有限公司 | Gas - water joint backwashing system and process |
Non-Patent Citations (2)
| Title |
|---|
| 刘德新: "《油田污水处理》", 30 April 2015, 中国石油大学出版社 * |
| 寇杰 罗小明: "《油田水处理》", 30 November 2018, 中国石油大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717537A (en) * | 2020-10-13 | 2021-04-30 | 董正中 | Decolorizing device and method used in process of producing vehicle urea |
| CN112456679A (en) * | 2020-11-18 | 2021-03-09 | 安徽汇泽通环境技术有限公司 | Device and method for treating disinfection byproducts by mesoporous carbon reinforced carbon sand filter |
| CN113769445A (en) * | 2021-08-25 | 2021-12-10 | 河北中瀚水务有限公司 | Intelligent common rapid filter tank system with air flushing and filtering method |
| CN113769445B (en) * | 2021-08-25 | 2023-01-10 | 河北中瀚水务有限公司 | Intelligent common rapid filter tank system with air flushing and filtering method |
| CN115520972A (en) * | 2022-10-27 | 2022-12-27 | 上海城投水务（集团）有限公司制水分公司 | Device and method for regulating and controlling leakage of micro-animals in biological activated carbon filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109264938A (en) | Carbon sand filter | |
| US3713543A (en) | Activated sewage plant | |
| CN104817167B (en) | A kind of precipitation position back-flushing method for UBAF technique | |
| US10017406B2 (en) | Upflow continuous backwash filter | |
| US6015497A (en) | Filtration system and method for removing biological wastes from aquaculture tanks | |
| CN105130105B (en) | A kind of combined water and air backwash system and technique | |
| JPWO2012161339A1 (en) | Sewage treatment system | |
| US20130168331A1 (en) | Means for Cleaning Packed Media In a Wastewater Filter Treatment System | |
| CN105060476B (en) | A kind of advanced nitrogen V-type filter tank | |
| CN103172165A (en) | Suspended ceramic biological aerated pool and method for treating raw water by applying suspended ceramsite biological aerated pool | |
| US4051039A (en) | Activated sewage plant and process | |
| EA004018B1 (en) | Device for purifying effluents | |
| CN103539255B (en) | Suspension haydite-active carbon double layer filter and apply it and process the method for former water | |
| CN105585105A (en) | Suspended bio-filter bed and jet-type flushing method thereof | |
| US3482695A (en) | Package water treatment plant | |
| JPH05154476A (en) | Membrane filter | |
| CN108751623A (en) | A kind of multifunction double-layer filter tank | |
| CA2565052A1 (en) | System for improved dissolved air floatation with a biofilter | |
| CN209583901U (en) | Biochemistry pool MBBR technique coupling denitrification deep-bed filter denitrification dephosphorization system | |
| JPH0671284A (en) | High-level purifying device for organic polluted water | |
| CN108622998A (en) | Biological filter | |
| US11097966B2 (en) | Method of operating an upflow backwash filter | |
| CN106630403A (en) | Novel underground sewage treatment device | |
| KR970006865Y1 (en) | Waste water purifying tank | |
| JP2565427B2 (en) | Organic sewage biological filtration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |