CN106267932A - A kind of upward flow floating media filter - Google Patents
A kind of upward flow floating media filter Download PDFInfo
- Publication number
- CN106267932A CN106267932A CN201610847534.7A CN201610847534A CN106267932A CN 106267932 A CN106267932 A CN 106267932A CN 201610847534 A CN201610847534 A CN 201610847534A CN 106267932 A CN106267932 A CN 106267932A
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- CN
- China
- Prior art keywords
- filter
- water
- pipe
- clear water
- plate
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/20—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being provided in an open container
- B01D24/26—Upward filtration
- B01D24/263—Upward filtration the filtering material being supported by pervious surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
- B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
Abstract
The present invention newly discloses a kind of upward flow floating media filter, it is characterized in that: described filter tank is divided into three layers, it is sequentially provided with bottom, middle level and top layer from top to bottom, former water channel that filter tank bottom is communicated with and water distributing area, described former water channel is communicated with raw water tubes and backwash water pipe, it is provided with a gas washing pipe bottom described water distributing area, and described gas washing pipe is through filter tank sidewall；Middle level, filter tank is provided with the filter course and drainage ditch being made up of light filter material, described filter course and drainage ditch dividing plate and separates, and is set to sidewall gap filter plate in the middle part of described dividing plate, and the top of described sidewall gap filter plate is provided with the slant setting baffle plate at filter course；Clear water zone that filter tank top layer is communicated with and clear water canal, be provided with gap, top filter plate bottom described clear water zone, described clear water canal is communicated with clear water pipe and initial filter water delivery pipe.The present invention is the upward flow floating media filter that a kind of low cost, simple installation and dirt-removing power are strong.
Description
Technical field
The present invention relates to a kind of drinking water treatment filter tank.Particularly relate to a kind of upward flow floating media filter.
Background technology
At present, the process technique of China's overwhelming majority earth surface water source waterworks is common process, i.e. coagulation, precipitation, mistake
Filter and sterilization.Wherein, filter element commonly used lower to stream filter tank, filtrate based on quartz sand, part water factory use anthracite,
Heavy mineral and activated carbon (relative density of these several filtrates is both greater than 1).Conventional filter tank kind mainly have conventional rapid filter,
V-type filter tank, valveless filtering pool, siphon filter, moving flushing cage filter chamber etc., the most newly-built big-and-middle-sized waterworks many employings V-type
Filter tank.
Above-mentioned filter tank is primarily present problems with:
1, filtrate is relatively costly, and filter tank structure is complex.
2, the aperture resistance of large resistance underdrain system is big, and power consumption during backwash is big.Even if slight drag water distribution system
System, owing to filtrate proportion is relatively big, power consumption during flushing is the biggest.
3, limiting due to manufacturing process, the particle diameter of filtrate is difficult to accomplish completely the same, China use effective grain size and
Nonuniformity coefficient method, effective grain size d10=0.55 of monolayer quartz sand filter media, K80 < 2.0.When filter tank uses high-velocity flow recoil
When washing, the current flowed up can hold up floating for filtering layer, makes sand grains be in suspended state, and automatically occurs that hydraulic classiciation is existing
As, the sand grains that i.e. particle diameter is little is positioned at upper strata, and the sand grains that particle diameter is big is positioned at lower floor, the lower strainability to stream filter tank thus can drop
Low.Even if using the even-granular filter of air-water backwashing, after running the long period, filtering layer can present in various degree the most unavoidably
Hydraulic classiciation phenomenon.
4, lower in time flowing through filter, the impurity retained in filtering layer can get more and more, and current flow through the loss of flood peak of filtering layer can be by
Cumulative greatly, when the loss of flood peak of a certain depth exceedes the depth of water at this below sand face, negative pressure appearance will occur.In negative pressure
District, gas the most soluble in water can constantly discharge.Escaping gas brings two kinds of consequences: one is to reduce effective filtering surface
Long-pending, increase filtering layer local resistance, increase the loss of flood peak；Two is that bubble can penetrate filtering layer, rises to surface, filter tank, takes away lightweight
Or thin matter filtrate, destroy structure of filtering layer, when backwash, bubble is easier to take away a large amount of filtrate.
Summary of the invention
The problem to be solved in the present invention is to provide the upward flow lightweight filter that a kind of low cost, simple installation and dirt-removing power are strong
Material filter tank, it is proposed that following technical scheme:
A kind of upward flow floating media filter, described filter tank is divided into three layers, is sequentially provided with bottom, middle level and top from top to bottom
Layer, former water channel that filter tank bottom is communicated with and water distributing area, described former water channel is communicated with raw water tubes and backwash water pipe, described in join
It is provided with a gas washing pipe bottom pool, and described gas washing pipe is through filter tank sidewall；Middle level, filter tank is provided with the mistake being made up of light filter material
Filtering layer and drainage ditch, described filter course and drainage ditch dividing plate separate, and are set to sidewall gap filter plate, described side in the middle part of described dividing plate
The top of parietal suture gap filter plate is provided with the slant setting baffle plate at filter course；Clear water zone that filter tank top layer is communicated with and clear water canal,
Being provided with gap, top filter plate bottom described clear water zone, described clear water canal is communicated with clear water pipe and initial filter water delivery pipe.
Further improvement of these options, described light filter material material is plastics.
Further improvement of these options, described top gap filter plate and described sidewall gap filter plate are by plastics system
Become.
Further improvement of these options, described raw water tubes, backwash water pipe, gas washing pipe, drain pipe, clear water pipe and just
Drainage delivery pipe is fitted with a switch valve.
Further improvement of these options, the pipeline in water distributing area of described gas washing pipe is perforated pipe.
Further improvement of these options, described perforated pipe surface is provided with evenly distributed multiple steam vents.
The beneficial effects of the present invention is:
(1) material of light filter material is plastics (such as polyethylene), and manufacturing cost is relatively low, and particle diameter of filter medium is more uniform,
The ability containing dirt of whole filtering layer is stronger.Owing to the proportion of light filter material only need to meet handle much smaller than quartz sand, the intensity that water rinses
Impurities in water is drained, and under the conditions of same washing time, backwash rate is obviously reduced, i.e. washing water quantity can reduce.In order to
Avoid causing resistance excessive because all filtrates are squeezed in below upper layer gap filter plate during backwash, set on the pool wall of side especially
Put gap filter plate discharge backwashing wastewater.Unique sidewall gap filter plate design so that the water level meeting when water rinses, in pond
Dropping to the distance below of gap, top filter plate, the Fluidization of light filter material strengthens, power consumption when water rinses
Can reduce.
(2) filter type is upward flow, does not worries negative pressure appearance.
(3) design of gap, top filter plate, it is to avoid the loss of light filter material.
(5) in order to avoid when filtering current can be directly entered upper strata filtrate by sidewall gap filter plate by lower floor's filtrate and send out
Raw short circuit, adds a baffle plate tilted especially in this device.Unique baffle design so that current are along sidewall gap filter plate
The path upwards filtered extends, and resistance increases, and largely avoids the generation of short circuit problem, it is ensured that water quality after filter.
(6) due in running stress less, gap, top filter plate and sidewall gap filter plate all can be made of plastics, become
This is relatively low, easy for installation.
(7) bed rearrangement filter tank structure is relatively simple, it is easy to accomplish automatization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention a kind of upward flow floating media filter.
Fig. 2 is the upward flow filtration short circuit schematic diagram that the present invention does not install near the filter plate of sidewall gap.
Fig. 3 is the upward flow filtration path schematic diagram that the present invention installs near the filter plate of baffle plate rear wall gap.
Reference: 1-clear water zone；Gap, 2-top filter plate；3-filter course；4-water distributing area；5-gas washing pipe switch valve；6-
Gas washing pipe；7-baffle plate；8-sidewall gap filter plate；9-raw water tubes；10-raw water tubes switch valve；11-backwash water pipe switch valve；12-
Backwash water pipe；13-drain pipe；14-drain pipe switch valve；15-clear water pipe；16-clear water pipe switch valve；17-initial filter water discharges
Pipe switch valve；18-initial filter water delivery pipe；19-clear water canal；The former water channel of 20-；21-drainage ditch；22-path 1；23-path 2.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with
Detailed description of the invention, is expanded on further the present invention.
In conjunction with a kind of upward flow floating media filter shown in accompanying drawing 1, described filter tank is divided into three layers, sets the most successively
Having former water channel 20 and water distributing area 4 that bottom, middle level and top layer, filter tank bottom be communicated with, described former water channel 20 is communicated with former water
Pipe 9 and backwash water pipe 12, be provided with a gas washing pipe 6, and described gas washing pipe 6 be through filter tank sidewall bottom described water distributing area 4；Filter tank
Middle level is provided with the filter course 3 and drainage ditch 21 being made up of light filter material, and described filter course 3 and drainage ditch 21 separate with dividing plate, institute
Stating and be set to sidewall gap filter plate 8 in the middle part of dividing plate, the top of described sidewall gap filter plate 8 is provided with the slant setting gear at filter course 3
Plate 7；Clear water zone 1 that filter tank top layer is communicated with and clear water canal 19, be provided with gap, top filter plate 2 bottom described clear water zone 1, described
Clear water canal 19 is communicated with clear water pipe 15 and initial filter water delivery pipe 18.
In the present embodiment, described light filter material material is plastics, and the manufacturing cost of plastics is relatively low, and particle diameter of filter medium is more
Uniformly, whole filtering layer is stronger containing dirty ability.
In the present embodiment, described top gap filter plate and described sidewall gap filter plate are all made of plastics, and cost is relatively low,
Easy for installation.
In the present embodiment, described raw water tubes, backwash water pipe, gas washing pipe, drain pipe, clear water pipe and initial filter water delivery pipe
It is fitted with a switch valve, controls the break-make of current.
In the present embodiment, the pipeline in water distributing area of described gas washing pipe is perforated pipe, and described perforated pipe surface is provided with all
Multiple steam vents of even arrangement, prepare for flushed filtering layer.
During filtration, closing switch valve 11 on backwash tube, open raw water tubes switch valve 10, former water enters former through raw water tubes 9
Water channel 20, then through water distributing area 4 uniform water distribution, current are from bottom to top through light filter material filtering layer 3 and gap, top filter plate 2,
Rear entrance clear water canal 19, is discharged by clear water pipe 15, within just having started the 0.5h filtered, opens initial filter water delivery pipe switch valve, just
Drainage is discharged by initial filter water delivery pipe 18.
During backwash, using the mode of air water back washing to be rinsed filter material layer, first gas punching, then air water recoils simultaneously,
Last water punching, comprises the following steps that shown:
(1) first gas punching: closing raw water tubes switch valve 10, open gas wash pipe valve switch valve 5, in pond, gas washing pipe 6 pipeline section is for wearing
Kong Guan, arranging air blasting intensity is 13～17L/ (s), and the time is 2～1min.
(2) air water recoils simultaneously: air blasting intensity keeps constant；Valve 14 on opening water discharge pipe, in pond, waste water stitches through sidewall
Gap filter plate 8 enters drainage ditch 21, is then discharged by drain pipe 13, and pond middle water level is gradually reduced；Open backwash water pipe to open simultaneously
Closing valve 11, it is 2～3L/ (s) that water rushes intensity；Washing time is 4～3min.
(3) Hou Shuichong: closing and hold one's breath washing pipe switch valve 5, water rushes intensity and is adjusted to 3～6L/ (s), the time be 8～
5min。
Accompanying drawing 2 and accompanying drawing 3 being contrasted, during in order to avoid filtering, current can be by sidewall gap filter plate 8 by lower metafiltration
Material is directly entered upper strata filtrate and is short-circuited, and adds a baffle plate 7 tilted in this device especially, and unique baffle plate sets
Meter so that current extend along the path that sidewall gap filter plate 8 upwards filters, resistance increases, and current filtering direction is more likely to edge
23 rather than path 22, largely avoid the generation of short circuit problem, it is ensured that water quality after filter.
Those of ordinary skill in the art it should be appreciated that above embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, the change as long as in the spirit of the present invention, to embodiment described above
Change, modification all will fall in scope of the presently claimed invention.
Claims (6)
1. a upward flow floating media filter, it is characterised in that: described filter tank is divided into three layers, is sequentially provided with the end from top to bottom
Layer, middle level and top layer, former water channel that filter tank bottom is communicated with and water distributing area, described former water channel is communicated with raw water tubes and backwash
Water pipe, is provided with a gas washing pipe, and described gas washing pipe is through filter tank sidewall bottom described water distributing area；Middle level, filter tank is provided with is filtered by lightweight
Filter course and drainage ditch, described filter course and drainage ditch dividing plate that material is constituted separate, and are set to sidewall gap in the middle part of described dividing plate
Filter plate, the top of described sidewall gap filter plate is provided with the slant setting baffle plate at filter course；The clear water that filter tank top layer is communicated with
District and clear water canal, be provided with gap, top filter plate bottom described clear water zone, described clear water canal is communicated with clear water pipe and initial filter water discharge
Pipe.
A kind of upward flow floating media filter the most according to claim 1, it is characterised in that: described light filter material material is
Plastics.
A kind of upward flow floating media filter the most according to claim 1, it is characterised in that: gap, described top filter plate and
Described sidewall gap filter plate is all made of plastics.
A kind of upward flow floating media filter the most according to claim 1, it is characterised in that: described raw water tubes, backwash
Water pipe, gas washing pipe, drain pipe, clear water pipe and initial filter water delivery pipe are fitted with a switch valve.
A kind of upward flow floating media filter the most according to claim 1, it is characterised in that: described gas washing pipe in water distribution
The pipeline in district is perforated pipe.
A kind of upward flow floating media filter the most according to claim 5, it is characterised in that: described perforated pipe surface is provided with
Evenly distributed multiple steam vents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847534.7A CN106267932B (en) | 2016-09-26 | 2016-09-26 | A kind of upward flow floating media filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847534.7A CN106267932B (en) | 2016-09-26 | 2016-09-26 | A kind of upward flow floating media filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106267932A true CN106267932A (en) | 2017-01-04 |
| CN106267932B CN106267932B (en) | 2018-07-10 |
Family
ID=57714848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610847534.7A Active CN106267932B (en) | 2016-09-26 | 2016-09-26 | A kind of upward flow floating media filter |
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| Country | Link |
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| CN (1) | CN106267932B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604330A (en) * | 2020-12-08 | 2021-04-06 | 西安建筑科技大学 | Upward-flow floating type light filter material filter tank |
| CN113457231A (en) * | 2021-08-13 | 2021-10-01 | 徐州工程学院 | Washing method of ultra-light filter material filter tank |
| CN113769446A (en) * | 2021-08-13 | 2021-12-10 | 徐州工程学院 | Polystyrene foam filter bead filter tank and flushing method thereof |
| CN115465945A (en) * | 2022-09-21 | 2022-12-13 | 徐州工程学院 | Filter medium series type membrane bioreactor and flushing method thereof |
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| US6471857B1 (en) * | 1999-10-27 | 2002-10-29 | Koyo Engineering Co., Ltd. | Filter apparatus with sand filter bed |
| CN2782187Y (en) * | 2004-10-09 | 2006-05-24 | 唐传祥 | Upward flow counter-size fast filter chamber |
| CN202410274U (en) * | 2012-01-09 | 2012-09-05 | 中国市政工程西北设计研究院有限公司天津分院 | Filter for upward flow suspension filter materials |
| CN206198789U (en) * | 2016-09-26 | 2017-05-31 | 徐州工程学院 | A kind of upward flow floating media filter |
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Patent Citations (5)
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|---|---|---|---|---|
| US6471857B1 (en) * | 1999-10-27 | 2002-10-29 | Koyo Engineering Co., Ltd. | Filter apparatus with sand filter bed |
| CN2460518Y (en) * | 2000-03-08 | 2001-11-21 | 上海市政工程设计研究院科学研究所 | Micro-pollution raw water and sewage treatment device for water supply |
| CN2782187Y (en) * | 2004-10-09 | 2006-05-24 | 唐传祥 | Upward flow counter-size fast filter chamber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604330A (en) * | 2020-12-08 | 2021-04-06 | 西安建筑科技大学 | Upward-flow floating type light filter material filter tank |
| CN113457231A (en) * | 2021-08-13 | 2021-10-01 | 徐州工程学院 | Washing method of ultra-light filter material filter tank |
| CN113769446A (en) * | 2021-08-13 | 2021-12-10 | 徐州工程学院 | Polystyrene foam filter bead filter tank and flushing method thereof |
| CN113457231B (en) * | 2021-08-13 | 2022-08-26 | 徐州工程学院 | Washing method of ultra-light filter material filter tank |
| CN115465945A (en) * | 2022-09-21 | 2022-12-13 | 徐州工程学院 | Filter medium series type membrane bioreactor and flushing method thereof |
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| Publication number | Publication date |
|---|---|
| CN106267932B (en) | 2018-07-10 |
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