CN106267932B - A kind of upward flow floating media filter - Google Patents
A kind of upward flow floating media filter Download PDFInfo
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- CN106267932B CN106267932B CN201610847534.7A CN201610847534A CN106267932B CN 106267932 B CN106267932 B CN 106267932B CN 201610847534 A CN201610847534 A CN 201610847534A CN 106267932 B CN106267932 B CN 106267932B
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- filter
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- layer
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The present invention newly discloses a kind of upward flow floating media filter, it is characterised in that：The filter tank is divided into three layers, it is equipped with bottom, middle level and top layer successively from top to bottom, filter tank bottom is equipped with raw water canal and the water distributing area of connection, and the raw water canal is communicated with raw water tubes and backwash water pipe, the water distributing area bottom is equipped with a gas washing pipe, and the gas washing pipe passes through filter tank side wall；Filter tank middle level is equipped with the filter layer and drainage ditch being made of light filter material, and the filter layer and drainage ditch are separated with partition board, and side wall gap filter plate is set as in the middle part of the partition board, and the top of side wall gap filter plate is equipped with baffle of the slant setting in filter layer；Filter tank top layer is equipped with the clear water zone of connection and clear water canal, and the clear water zone bottom is equipped with top gap filter plate, and the clear water canal is communicated with water pipe and initial filter water discharge spout.The present invention is a kind of at low cost, simple installation and the strong upward flow floating media filter of dirt-removing power.
Description
Technical field
The present invention relates to a kind of drinking water treatment filter tanks.More particularly to a kind of upward flow floating media filter.
Background technology
At present, the treatment process of China overwhelming majority earth surface water source waterworks is common process, i.e. coagulation, precipitation, mistake
Filter and disinfection.Wherein, filter element generally using it is lower to stream filter tank, filtrate based on quartz sand, part water factory using anthracite,
Heavy mineral and activated carbon (relative density of these types of filtrate is both greater than 1).Common filter tank type mainly have conventional rapid filter,
V-type filter tank, valveless filtering pool, siphon filter, moving flushing cage filter chamber etc., newly-built large and medium-sized waterworks is mostly using V-type at present
Filter tank.
Above-mentioned filter tank is primarily present problems with：
1st, the cost of filtrate is higher, and filter tank structure is complex.
2nd, the aperture resistance of large resistance underdrain system is big, and power consumption during backwash is big.Even water system is matched in slight drag
System, since filtrate proportion is larger, power consumption during flushing is also larger.
3rd, since manufacturing process limits, the grain size of filtrate be difficult accomplish it is completely the same, China using effective grain size and
Nonuniformity coefficient method, the effective grain size d10=0.55, K80 of individual layer quartz sand filter media<2.0.When filter tank is recoiled using high-velocity flow
When washing, the flow flowed up can float filtering layer picking-up, sand grains be made to be in suspended state, and hydraulic classiciation occur automatically and show
As, i.e. the small sand grains of grain size is located at upper strata, and the big sand grains of grain size is located at lower floor, the lower strainability to stream filter tank thus can drop
It is low.The even-granular filter of air-water backwashing is even used, filtering layer also can be inevitably presented in various degree after running the long period
Hydraulic classiciation phenomenon.
4th, it is lower can be more and more to impurity when flowing through filter, retained in filtering layer, the head loss that flow flows through filtering layer can be by
It is cumulative big, when the head loss of a certain depth is more than the depth of water at this below sand face, negative pressure appearance will occur.In negative pressure
Area, originally gas soluble in water can constantly release.Escaping gas brings two kinds of consequences：First, reduce effective filtering surface
Product increases filtering layer local resistance, increases head loss；Second is that bubble can penetrate filtering layer, filter tank surface is risen to, takes away lightweight
Or thin matter filtrate, structure of filtering layer is destroyed, in backwash, bubble is easier to take away a large amount of filtrates.
Invention content
The problem to be solved in the present invention be to provide a kind of at low cost, simple installation and dirt-removing power it is strong upward flow lightweight filter
Expect filter tank, it is proposed that following technical solution：
A kind of upward flow floating media filter, the filter tank are divided into three layers, are equipped with bottom, middle level and top successively from top to bottom
Layer, filter tank bottom are equipped with raw water canal and the water distributing area of connection, and the raw water canal is communicated with raw water tubes and backwash water pipe, described to match
Pool bottom is equipped with a gas washing pipe, and the gas washing pipe passes through filter tank side wall；Filter tank middle level is equipped with the mistake being made of light filter material
Filtering layer and drainage ditch, the filter layer and drainage ditch are separated with partition board, and side wall gap filter plate, the side are set as in the middle part of the partition board
The top of parietal suture gap filter plate is equipped with baffle of the slant setting in filter layer；Filter tank top layer is equipped with the clear water zone of connection and clear water canal,
The clear water zone bottom is equipped with top gap filter plate, and the clear water canal is communicated with water pipe and initial filter water discharge spout.
Further improvement of these options, the light filter material material are plastics.
Further improvement of these options, top gap filter plate and side wall gap filter plate are by plastics system
Into.
Further improvement of these options, the raw water tubes, backwash water pipe, gas washing pipe, drainpipe, 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 the gas washing pipe is perforated pipe.
Further improvement of these options, the perforation pipe surface are equipped with evenly distributed multiple gas vents.
The beneficial effects of the present invention are：
(1) material of light filter material is plastics (such as polyethylene), and manufacture cost is relatively low, and particle diameter of filter medium is more uniform,
The ability containing dirt of entire filtering layer is stronger.Since the proportion of light filter material is much smaller than quartz sand, the intensity that water rinses need to only meet handle
Impurities in water is drained, and backwash rate is obviously reduced under the conditions of same washing time, i.e., washing water quantity can be reduced.In order to
Resistance is excessive caused by all filtrates are extruded in below upper layer gap filter plate when avoiding backwashing, and is especially set on the pool wall of side
Gap filter plate discharge backwashing wastewater is put.The filter plate design of unique side wall gap so that when water rinses, the water level meeting in pond
Drop to the distance below of top gap filter plate, the Fluidization of light filter material increases, power consumption when water rinses
It can reduce.
(2) filter type is upward flow, without worrying negative pressure appearance.
(3) design of top gap filter plate avoids the loss of light filter material.
(5) in order to avoid during filtering flow can upper strata filtrate by lower floor's filtrate be directly entered by side wall gap filter plate and send out
It is raw short-circuit, especially increase an inclined baffle in the present apparatus.Unique baffle design so that flow is along side wall gap filter plate
The path filtered upwards extends, and resistance increase largely avoids the generation of short circuit problem, ensure that water after filter matter.
(6) due in operational process stress it is smaller, top gap filter plate and side wall gap filter plate can be made of plastics, into
This is relatively low, easy for installation.
(7) bed rearrangement filter tank structure is relatively simple, it is easy to accomplish automation.
Description of the drawings
Fig. 1 is a kind of structure diagram of upward flow floating media filter of the present invention.
Fig. 2 is the upward flow filtration short circuit schematic diagram of the invention do not installed near the filter plate of side wall gap.
Fig. 3 is the upward flow filtration path schematic diagram near the filter plate of present invention installation baffle rear wall gap.
Reference numeral：1- clear water zones；2- tops gap filter plate；3- filter layers；4- water distributing areas；5- gas washing pipe switch valves；6-
Gas washing pipe；7- baffles；8- side walls gap filter plate；9- raw water tubes；10- raw water tubes switch valves；11- backwashes water pipe switch valve；12-
Backwash water pipe；13- drainpipes；14- drainpipe switch valves；15- water pipes；16- water pipe switch valves；17- initial filter waters discharge
Pipe switch valve；18- initial filter water discharge spouts；19- clear water canals；20- raw water canals；21- drainage ditch；22- paths 1；23- paths 2.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, with reference to
Specific embodiment, the present invention is further explained.
With reference to a kind of attached upward flow floating media filter shown in FIG. 1, the filter tank is divided into three layers, sets successively from top to bottom
There are bottom, middle level and top layer, filter tank bottom is equipped with the raw water canal 20 of connection and water distributing area 4, the raw water canal 20 are communicated with raw water
Pipe 9 and backwash water pipe 12,4 bottom of water distributing area is equipped with a gas washing pipe 6, and the gas washing pipe 6 passes through filter tank side wall；Filter tank
Middle level is equipped with the filter layer 3 being made of light filter material and drainage ditch 21, the filter layer 3 and drainage ditch 21 are separated with partition board, institute
It states and side wall gap filter plate 8 is set as in the middle part of partition board, the top of side wall gap filter plate 8 is equipped with gear of the slant setting in filter layer 3
Plate 7；Filter tank top layer is equipped with the clear water zone 1 of connection and clear water canal 19, and 1 bottom of clear water zone is equipped with top gap filter plate 2, described
Clear water canal 19 is communicated with water pipe 15 and initial filter water discharge spout 18.
In the present embodiment, the light filter material material is plastics, and the manufacture cost of plastics is relatively low, and particle diameter of filter medium is more
Uniformly, entire filtering layer is stronger containing dirty ability.
In the present embodiment, top gap filter plate and side wall gap filter plate are made of plastics, and cost is relatively low,
It is easy for installation.
In the present embodiment, the raw water tubes, backwash water pipe, gas washing pipe, drainpipe, water pipe and initial filter water discharge spout
A switch valve is fitted with, controls the break-make of flow.
In the present embodiment, the pipeline in water distributing area of the gas washing pipe is perforated pipe, and the perforation pipe surface is equipped with equal
Multiple gas vents of even arrangement are prepared for flushed filtering layer.
During filtering, backwash tube upper switch valve 11 is closed, opens raw water tubes switch valve 10, raw water enters former through raw water tubes 9
Water channel 20, then through 4 uniform water distribution of water distributing area, flow passes through light filter material filtering layer 3 and top gap filter plate 2 from bottom to top, most
Enter clear water canal 19 afterwards, discharged by water pipe 15, within the 0.5h for just having started filtering, open initial filter water discharge spout switch valve, just
Drainage is discharged by initial filter water discharge spout 18.
During backwash, filter material layer is rinsed by the way of air water back washing, first gas rushes, and then air water recoils simultaneously,
Last water punching, is as follows shown：
(1) first gas rushes：Raw water tubes switch valve 10 is closed, opens gas wash pipe valve switch valve 5,6 pipeline section of gas washing pipe is wears in pond
Kong Guan, setting air blasting intensity are 13~17L/ (㎡ s), and the time is 2~1min.
(2) air water recoils simultaneously：Air blasting intensity remains unchanged；Valve 14 on drainpipe is opened, waste water is stitched through side wall in pond
Gap filter plate 8 enters drainage ditch 21, is then discharged by drainpipe 13, water level is gradually reduced in pond；Backwash water pipe is opened simultaneously to open
Valve 11 is closed, water rushes intensity as 2~3L/ (㎡ s)；Washing time is 4~3min.
(3) Hou Shuichong：Close gas washing pipe switch valve 5, water rushes intensity and is adjusted to 3~6L/ (㎡ s), the time for 8~
5min。
Attached drawing 2 and attached drawing 3 are compared, in order to avoid flow can be filtered by side wall gap filter plate 8 by lower floor during filtering
Material is directly entered upper strata filtrate and short circuit occurs, and an inclined baffle 7 is especially increased in the present apparatus, unique baffle is set
Meter so that flow extends along the path that side wall gap filter plate 8 filters upwards, and resistance increase, flow filtering direction is more likely to edge
23 rather than path 22, the generation of short circuit problem is largely avoided, ensure that water after filter matter.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will be all fallen in scope of the presently claimed invention.
Claims (6)
1. a kind of upward flow floating media filter, it is characterised in that：The filter tank is divided into three layers, is equipped with bottom successively from top to bottom
Layer, middle level and top layer, filter tank bottom is equipped with the raw water canal of connection and water distributing area, the raw water canal are communicated with raw water tubes and backwash
Water pipe, the water distributing area bottom is equipped with a gas washing pipe, and the gas washing pipe passes through filter tank side wall；Filter tank middle level is equipped with and is filtered by lightweight
Expect the filter layer and drainage ditch that form, the filter layer and drainage ditch are separated with partition board, and side wall gap is set as in the middle part of the partition board
Filter plate, the top of side wall gap filter plate are equipped with baffle of the slant setting in filter layer；Filter tank top layer is equipped with the clear water of connection
Area and clear water canal, the clear water zone bottom are equipped with top gap filter plate, and the clear water canal is communicated with water pipe and initial filter water discharge
Pipe.
2. a kind of upward flow floating media filter according to claim 1, it is characterised in that：The light filter material material is
Plastics.
3. a kind of upward flow floating media filter according to claim 1, it is characterised in that：Top gap filter plate and
Side wall gap filter plate is made of plastics.
4. a kind of upward flow floating media filter according to claim 1, it is characterised in that：The raw water tubes, backwash
Water pipe, gas washing pipe, water pipe and initial filter water discharge spout are fitted with a switch valve.
5. a kind of upward flow floating media filter according to claim 1, it is characterised in that：The gas washing pipe in water distribution
The pipeline in area is perforated pipe.
6. a kind of upward flow floating media filter according to claim 5, it is characterised in that：The perforation pipe surface is equipped with
Evenly distributed multiple gas 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 |
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| Publication Number | Publication Date |
|---|---|
| CN106267932A CN106267932A (en) | 2017-01-04 |
| CN106267932B true CN106267932B (en) | 2018-07-10 |
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| 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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112604330B (en) * | 2020-12-08 | 2022-08-02 | 西安市城区市政设施养护管理有限公司 | Upward-flow floating type light filter material filter tank |
| CN113769446B (en) * | 2021-08-13 | 2022-09-16 | 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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| 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 |
| 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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2016
- 2016-09-26 CN CN201610847534.7A patent/CN106267932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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| CN106267932A (en) | 2017-01-04 |
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