CN107055771A - A kind of water and air distributing system and its backwash technique - Google Patents
A kind of water and air distributing system and its backwash technique Download PDFInfo
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- CN107055771A CN107055771A CN201710408024.4A CN201710408024A CN107055771A CN 107055771 A CN107055771 A CN 107055771A CN 201710408024 A CN201710408024 A CN 201710408024A CN 107055771 A CN107055771 A CN 107055771A
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- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2826—Anaerobic digestion processes using anaerobic filters
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- 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
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- Biodiversity & Conservation Biology (AREA)
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- Environmental & Geological Engineering (AREA)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of water and air distributing system, including water dispensing board, some filter caps and some gas-distribution pipes；Water dispensing board provided with distributing hole, be all provided with the front and rear wall and cross wall of filter cap it is fluted, and groove axis on the same line；It is sealing at two ends of the two sides of gas-distribution pipe provided with an air distribution hole, and gas-distribution pipe；Wherein, in filter cap side, the upper and bottom section of wall is respectively equipped with secondary air distribution hole and secondary distributing hole, and gas-distribution pipe is coordinated in filter cap by recess-mounted, and obtains some water and air distributing chambers, filter cap is arranged on water dispensing board, and a distributing hole corresponds to water and air distributing room.The present invention designs the size for increasing passage and outlet pass by delthyrium by setting multiple independent water and air distributing chambers, and side arrangement both ensure that filtrate was retained, while effectively avoiding blocking, it is ensured that the uniformity of water and air distributing；In addition, above-mentioned each part is formed in one, it is easily installed, fixes and safeguards.
Description
Technical field
The invention belongs to water treatment engineering technology field, more particularly to a kind of water distribution backwashed for denitrification filter pool is matched somebody with somebody
Gas system and its backwash technique.
Background technology
At the growing interest to water pollution and great attention with the whole world, China's environmental administration's common demands sewage at different levels
Manage factory's strict implement《Urban wastewater treatment firm pollutant emission is marked》(GB18918-2002) one-level A standards.To being completed
Sewage treatment plant carry in mark transformation process, run into it is most universal most it is difficult be TN the mark that carries, sewage treatment plant's existing process is very
Difficulty meets the requirement that TN proposes mark upgrading, it is therefore necessary to use strengthened denitrification new technology.
Denitrification filter pool is used as collection biological denitrificaion and the two-in-one processing unit of filtering function, water supply factory filtering or dirty
When water factory proposes mark transformation, the requirement improved constantly in discharging standards to suspension and total nitrogen effluent index is met.Denitrification
Filter tank uses gravity stream water intake mode, and filtrate uses the rubble sand with special requirement and shape, sand grains diameter 2-3mm.
In normal filter cycle, the suspension in sewage is retained by filtrate, and the biomembrane (denitrifying bacteria) of filter material surface is by anti-
Nitrification, removes the TN in sewage.As suspension is constantly trapped, the loss of flood peak of filtering can be continuously increased, when super
Limit Design head is crossed, filter tank needs to remove the pollutant retained in filtrate by backwashing and removes denitrifying microorganism
It is metabolic remaining, to recover the filter capacity in filter tank and improve denitrification ability.Therefore, the water and air distributing system of backwash is filter
Part very crucial in pond, whether be not only related to effluent quality can be up to standard, and to the operation and maintenance cost in filter tank
There is very great influence with service life, and filter block/filter plate is exactly the device that water and air distributing is provided for filter tank.
Traditional water and air distributing filter block, has the following disadvantages：(1) filter block volume is relatively small, and that is expended during installation is artificial
It is more, and because quantity is more, the gap between different lines filter block is uneven, the easy transverse direction caused by location difficulty during installation
Gap is uneven, causes the water and air distributing in whole pond uneven；(2) lack buckle between fixing device or filter block to overlap not
It is solid, easily loosened during backwash, long-term use causes water dispensing apparatus upset destruction；Or fixed using mortar, because of concrete sand
Slurry fills unreal and long term submersion in water, and the huge impulse force through backwash, it is easy to loosen, water distribution also can be fully caused for a long time
Air distributing device upset destruction；(3) shape of the filter block used at present is generally plastic material or casing plastic internal layer is filled a vacancy concrete
Formula, using small perforations resistance water and air distributing system, this small perforations diameter is between 0.2-1mm, and stomata is easily blocked up by sand
Fill in or cave in, so as to cause the damage in filter tank or scrap.
Traditional water and air distributing filter plate, is mainly fixed filter and support filter material layer.The number of filter quantity can influence
Backwash the uniformity of water and air distributing.There is problems with the water and air distributing system of the form：(1) between filter plate and filter plate, with
And the gap between filter plate and pool wall is sealed using clay.After the work several years of filter tank, filter plate fastener and lute in are very
Easily occur loosening and obscission, the sealing effectiveness of filter plate can be influenceed, influence is produced on the uniformity for backwashing water and air distributing；
(2) the more difficult control of the installation accuracy of filter, and because differential settlement, therefore it is difficult to ensure that air cushion layer occurs in filter plate after
Stabilization.
The content of the invention
The advantage of the present invention two kinds of water and air distributing systems of comprehensive filter plate and filter block is led to there is provided a kind of water and air distributing system
Cross water dispensing board and gas-distribution pipe is set in the bottom of filter cap, several water and air distributing chambers are got in filter cap so that gas and water is distinguished
Through distribution twice and water distribution twice, it is ensured that the uniformity of water and air distributing during backwash, with being not easily blocked, water and air distributing it is equal
It is even, install it is simple, be difficult upset damage, it is easy to maintenance the advantages of.
Technical scheme is as follows：
A kind of water and air distributing system, including water dispensing board, some filter caps and some gas-distribution pipes；
Described water dispensing board is provided with some distributing holes of array；
Described filter cap includes roof；
A pair of sidewalls, it stretches out and horizontal-extending one section laterally from the described side of roof two；
Front and rear wall and some cross walls outside it, described front and rear wall and cross wall are from one in described a pair of sidewalls
Another in described a pair of sidewalls is extended to, is all provided with the front and rear wall and cross wall described in the side away from described roof
The axis of fluted and described groove is on the same line with concave surface in same level；And
Baffle plate, it stretches out from described roof and flushed with described groove；
In the two sides of described gas-distribution pipe provided with an air distribution hole, and the two ends of described gas-distribution pipe are sealing；
Wherein, it is arranged with the secondary air distribution hole of some rows on the top of described filter cap side wall and bottom is arranged with some rows two
Secondary distributing hole；The gas-distribution pipe is coordinated in described filter cap by described recess-mounted, and by the roof, the pair of
Side wall, described baffle plate and the gas-distribution pipe limit some water and air distributing chambers, and described filter cap is arranged on described water dispensing board
On, and a described distributing hole corresponds to described water and air distributing room.
Preferably, described water and air distributing system also includes air supply system, and described air supply system includes main tracheae, described
Main tracheae connect some bronchuses, described bronchus is stretched into described gas-distribution pipe.
Preferably, the first gas tube orifice passed through for described bronchus, described distribution are additionally provided with described water dispensing board
Pipe is provided with the second gas tube orifice corresponding with the first described gas tube orifice.
Preferably, the width of described gas-distribution pipe is less than the spacing of a two neighboring described distributing hole.
Preferably, from the side wall of described filter cap, horizontal-extending face is provided with the first bolt hole laterally, two neighboring
The second bolt hole corresponding with the first described bolt hole is provided between a described distributing hole.
Preferably, along the pipe range direction of described gas-distribution pipe on both sides provided with an air distribution hole described in a row,
The shape of a described air distribution hole and described secondary air distribution hole and described secondary distributing hole is tri-angle-holed.
Preferably, the secondary air distribution hole that is arranged with the top of described filter cap side wall described in a row and in described filter cap
The bottom of side wall is arranged with the secondary distributing hole of a row, and the shape of described secondary air distribution hole and described secondary distributing hole is three
Angular hole.
Preferably, described filter cap is provided with the cross wall described in one, through the roof, the pair of side wall, described gear
Plate and the gas-distribution pipe limit the water and air distributing chamber obtained described in four.
Preferably, described baffle plate setting is in the centre position of described filter cap.
Preferably, the cross section of described filter cap is trapezoidal；The cross section of described gas-distribution pipe is square.
Preferably, described filter cap by high density polyethylene (HDPE) (HDPE) material be integrally formed obtained, described gas-distribution pipe by
PVC-U (UPVC) material is integrally formed obtained.
The invention also discloses the backwash technique of above-mentioned water and air distributing system, during backwash, gas is through described branch
Tracheae is flowed into and one layer of stable air cushion layer is formed in described gas-distribution pipe, and gas is flowed out by a described air distribution hole again, is completed
Distribution；Subsequently into described water and air distributing chamber one layer of air cushion layer of formation, gas flows out from described secondary air distribution hole,
The gap between gravel is bypassed, into filter material layer, secondary distribution is completed；Water is entered through described water dispensing board by a described distributing hole
Enter water and air distributing chamber, complete a water distribution；Then water is flowed out by described secondary distributing hole again, bypasses the gap between gravel,
Into filter material layer, secondary water distribution, twice water distribution and distribution process are completed, it is ensured that the uniformity of water and air distributing during backwash
Compared with prior art, beneficial effects of the present invention are as follows：
First, water and air distributing is uniform：The present invention is by setting water dispensing board and inlaying gas-distribution pipe in the bottom of filter cap, through filter cap
Roof, a pair of sidewalls, baffle plate and gas-distribution pipe, which are limited to, obtains several independent water and air distributing chambers in filter cap so that gas and water
Respectively through distribution twice and water distribution twice, it is ensured that the uniformity of water and air distributing during backwash；
2nd, install simple, it is easy to maintenance；The filter cap of the present invention is through being bolted on water dispensing board, and gas-distribution pipe inlays cooperation
On the groove of filter cap, the fixation of gas-distribution pipe is realized, in addition, water dispensing board, filter cap and gas-distribution pipe are formed in one, is easy to peace
Dress, fixed and maintenance；
3rd, it is not easily blocked；The present invention has abandoned traditional bar hole or circular hole, by secondary distributing hole, an air distribution hole and
Secondary air distribution hole be designed as it is tri-angle-holed, can prevent rounded pebbles block aperture, while can prevent due to microorganism growth make
Into aperture block, it is ensured that the uniformity of water and air distributing.
Certainly, any product for implementing the present invention it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
Fig. 1 is a kind of structural representation of water and air distributing system of the present invention；
Fig. 2 is the structural representation of water dispensing board of the present invention；
Fig. 3 is the present invention looks up structural representation of filter cap of the present invention；
Fig. 4 is the overlooking the structure diagram of filter cap of the present invention；
Fig. 5 is another structural representation of filter cap of the present invention；
Fig. 6 is another structural representation of filter cap of the present invention；
Fig. 7 is the structural representation of sparge pipe of the present invention；
Fig. 8 is arranged on the structural representation of denitrification filter pool for a kind of water and air distributing system of the present invention.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit protection scope of the present invention.Those skilled in the art are according to changing that the present invention makes in actual applications
Enter and adjust, still fall within protection scope of the present invention.
In order to better illustrate the present invention, the present invention is described in detail below with accompanying drawing.
As described in Fig. 1~5, a kind of water and air distributing system 15 of the invention, including water dispensing board 1, some filter caps 2 and some match somebody with somebody
Tracheae 3；
Described water dispensing board 1 is provided with some distributing holes 4 of array, for a water distribution, as shown in Figure 2；
Described filter cap 2 includes roof 201；
A pair of sidewalls 202, it stretches out and horizontal-extending one section 207, the level laterally from 201 liang of sides of described roof
Extended surface 207 is just fitted with water dispensing board 1；
Front and rear wall 203 and some vertical cross walls 204 outside it, described front and rear wall 203 and cross wall 204 are from described
A pair of sidewalls 202 in one extend in described a pair of sidewalls 202 another, so as to separate several spaces, together
When be all provided with fluted 5 on the front and rear wall 203 and cross wall 204 described in the side away from described roof 201, it is and described recessed
The axis of groove 5 is on the same line with concave surface in same level, and the groove 5 is used to inlay fixed gas-distribution pipe 3；And baffle plate
205, its length direction from described roof 201 along filter cap stretches out and flushed with described groove 5, the lower side of baffle plate 205
The upper surface of gas-distribution pipe 3 is just withstood, several spaces are separated again, and finally gives water and air distributing room 206, such as the institute of Fig. 3~4
Show；
Be provided with some air distribution holes 6 of row on the two sides of described gas-distribution pipe 3, and described gas-distribution pipe 3 two
Hold to seal 301, as shown in Figure 5；
Wherein, if being arranged with the secondary air distribution hole 7 of some rows on the top of the described side wall 202 of filter cap 2 and bottom is arranged with
The dry secondary distributing hole 8 of row；The gas-distribution pipe 3 is inlayed by described groove 5 to be fixed in described filter cap 2, and by the top
Wall 201, the pair of side wall 202, described baffle plate 205 and the gas-distribution pipe 3 limit some water and air distributing chambers 206, independent
The setting of areola, it is ensured that the uniformity of water and air distributing, described filter cap 2 is arranged on described water dispensing board 1, and described
One time distributing hole 4 corresponds to described water and air distributing room 206.
In order to which bronchus 10 is passed through in described gas-distribution pipe 3, to realize that gas is realized in water and air distributing chamber 206
Distribution and secondary distribution, the present invention may be selected to be additionally provided with the first gas tube orifice (figure on the water dispensing board 1 described in wherein one piece
In it is unmarked), the present invention is not limited the specific set location of the first gas tube orifice, can specifically be set according to the position of distributing channel
Put, meanwhile, described gas-distribution pipe 3 is provided with the second gas tube orifice corresponding with the first described gas tube orifice (unmarked in figure).Tool
Body, the first gas tube orifice in the present embodiment is arranged between an adjacent distributing hole 4 for water dispensing board 1, and the second gas tube orifice is set
It is just corresponding with the first gas tube orifice on the bottom surface of gas-distribution pipe 3, it is easy to bronchus 10 to be passed through distribution in gas-distribution pipe 3.
In order to ensure that water, through 1 water distributions of water dispensing board, water and air distributing room 206, this reality is directly entered from a distributing hole 4
Apply the spacing that the width of described gas-distribution pipe 3 is set smaller than a two neighboring described distributing hole 4 by example, and described one
The surface of secondary distributing hole 4 just pair with described water and air distributing room 206.
In addition, from the side wall of described filter cap 2, horizontal-extending face 207 is provided with the first bolt hole 9 laterally, meanwhile, match somebody with somebody
It is provided with and described corresponding second bolt hole of the first bolt hole 9 between a two neighboring described distributing hole 4 on water plate 1
Described filter cap 2, is fixed on water dispensing board 1 by (unmarked in figure) so as to be realized by bolt, filter cap when preventing from backwashing
Loosen, overturn and destroy, and simplify installation steps, reduce the risk that installation process is likely to occur mistake.
With gas is little by little passed through from bronchus 10, gas is distributed in gas-distribution pipe 3, when the air pressure in gas-distribution pipe 3 is arrived
During up to a certain value, gas will flow out to water and air distributing chamber 206 from an air distribution hole 6.In the present embodiment, along described distribution
The pipe range direction of pipe 3 is further, described for a distribution on both sides provided with an air distribution hole 6 described in a row
An air distribution hole 6 be shaped as it is tri-angle-holed.
The secondary air distribution hole 7 that is arranged with the top of the described side wall 202 of filter cap 2 described in a row and in described filter cap 2
The bottom of side wall 202 is arranged with the secondary distributing hole 8 of a row, the shape of described secondary air distribution hole 7 and described secondary distributing hole 8
It is tri-angle-holed, for secondary air distribution and water distribution.Hole of the present invention is shaped differently than traditional bar hole or circular hole, and this is tri-angle-holed
The size in aperture is increased, the shape in aperture has been innovated, rounded pebbles supporting layer material is contacted with tri-angle-holed, circle can be prevented
Shape cobble blocks aperture, while can prevent from blocking because microorganism grows the aperture caused, it is ensured that the uniformity of water and air distributing.
In the present embodiment, described filter cap is provided with the vertical cross wall 204 described in one, through the roof 201, described one
Offside wall 202, described baffle plate 205 and the gas-distribution pipe 3 are limited, and obtain the water and air distributing room 206 described in four.This area skill
Art personnel can obtain multiple water and air distributing rooms 206 according to the length of actual filter cap by setting multiple cross walls, and the present invention is not limited
Determine the quantity and its shape of cross wall 204.
In addition, in another embodiment of the present invention, the height of described cross wall 204 can be set and be less than the front and rear wall
203 height, i.e., extend downwardly not to the bottom of described filter cap 2, as shown in Figure 6 from described roof 201.During work, water
Face to the lower surface of the cross wall 204 this described, water freely circulates in the lower surface of described cross wall 204, and corresponding gas
Body obtains air bag in the independent distribution of water and air distributing room 206.
In the present embodiment, described baffle plate 205 is arranged on the centre position of described filter cap 2.
In the present embodiment, a pair of sidewalls 202 of described filter cap 2, it is from described 201 liang of sides of roof with an angle
Stretch out obliquely and horizontal-extending one section 207 laterally, therefore, from the point of view of the cross section of described filter cap 2, be shaped like ladder
Shape.But the present invention does not limit it from the mode of described 201 liang of sides stretchings of roof yet, can be circular arc, round and smooth or vertical
Extend downwardly from, for example, the roof and side wall of filter cap can be designed using circular arc type, as shown in Figure 7.
The present invention is fixed on groove 5 to realize that gas-distribution pipe 3 inlays cooperation, and therefore, the shape size of groove 5 must
Identical with the shape size of gas-distribution pipe 3, in the present embodiment, the cross section of described gas-distribution pipe 3 is square, the shape of groove 5
Also it is square, gas-distribution pipe 3 is set to square so that gas-distribution pipe 3 is not susceptible to rotate, and ensure that an air distribution hole 6 is maintained
In same level height, it is ensured that the uniformity of a distribution.
In a particular application, the present invention is preferably：Described water dispensing board 1 is concrete prefabricated, is integrally formed；Described filter
Cap 2 is integrally formed obtained by high density polyethylene (HDPE) material；Described gas-distribution pipe 3 is integrally formed obtained by UPVC materials.
A kind of mounting means of water and air distributing system 15 in denitrification filter pool of the present invention will be disclosed below, as shown in figure 8,
Specially：
When designing filter tank, the global shape in filter tank is determined according to the size of filter plate first, then in the bottom in filter tank
Center, installs a main tracheae 11 along along the distributing channel 14 of pond length direction, the bottom opening of main tracheae 11 and to connect several U-shaped
Bronchus 10, the other end of U-shaped bronchus 10 is stretched in the square gas-distribution pipe 3 of the water and air distributing system in filter tank, for side
Shape gas-distribution pipe 3 is supplied.
When installing filter plate, on the concrete buttress that water dispensing board 1 is placed on to filter tank bottom, each filter plate uses bottom counterbore
Bolt is fixed, tight with sealant sealing after fixing, and prevents leak.Four angles pass through quadrangle stainless steel pressure between each filter plate
Plate, and add chemical bolt to be fixedly connected with supporting nut, gap and water dispensing board 1 between water dispensing board 1 between the walls
Gap is tightly connected by cement mortar.Water dispensing board 1 above distributing channel, also needs to reserve U-shaped bronchus 10 passes through the
One gas tube orifice., it is necessary to calibrate the levelness of all filter plates after filter plate installation, it is ensured that it is in same level.
Filter plate installation and it is levelling after, square gas-distribution pipe 3 is placed on water dispensing board 1 along pond cross direction, matched somebody with somebody by square
The second gas tube orifice (being by U-shaped bronchus) reserved on tracheae 3 determines position, and filter cap 2 then is placed on into square distribution again
On pipe 3, the groove 5 in filter cap 2 is just matched with square gas-distribution pipe 3, with fixed square gas-distribution pipe 3.Filter cap 2 and water dispensing board 1 it
Between fixed with bolt, so far, filter plate installation.
In present embodiment, water dispensing board 1, filter cap 2 and gas-distribution pipe 3 are formed in one, and save cost, reduce work
Sequence, and can be produced in enormous quantities using die-sinking die.
Fixed, connected between filter cap 2 longitudinally through wedge mouthful, it is ensured that adjacent filter cap using bolt between water dispensing board 1 and filter cap 2
2 centre-to-centre spacing is equal, and gravel is inserted between adjacent filter cap 2, facilitates gas and water to flow out.During backwash, gas is by bronchus 10
Convey into filter tank, flowed into by bronchial perforate in gas-distribution pipe 3, one layer of stable air cushion layer, gas are formed in gas-distribution pipe 3
Flowed out again by an air distribution hole 6 of the side wall of gas-distribution pipe 3, into the water and air distributing chamber 206 in filter cap 2, and form one layer of air cushion
Layer, gas is flowed out by the secondary air distribution hole 7 of the side wall of filter cap 1 again, bypasses between gravel 13 gap, into filter material layer 12, completes two
Secondary distribution；During backwash, water flows through water dispensing board 1 by the aquaporin of filter tank bottom, and on water dispensing board 1 a distributing hole 4 enters
In water and air distributing chamber 206 in filter cap 2, then flowed out by the secondary distributing hole 8 of the side wall of filter cap 2, bypass between gravel 13 gap,
Into filter material layer 12, therefore, gas and water has water distribution twice and distribution process, it is ensured that the uniformity of water and air distributing during backwash.
Therefore, during present invention backwash, gas is conveyed into filter tank by main tracheae, is flowed into via the bronchus of main tracheae side wall
Gas-distribution pipe, forms one layer of stable air cushion layer in gas-distribution pipe, and gas is flowed out by an air distribution hole of gas-distribution pipe side wall, completed again
Distribution；
Gas, into the water and air distributing chamber in filter cap, forms one layer after the air distribution hole outflow of gas-distribution pipe side wall
Air cushion layer, gas is flowed out by the secondary air distribution hole of filter cap side wall again, bypasses the gap between gravel, into filter material layer, is completed secondary
Distribution.
During backwash, water flows through water dispensing board, and the distributing hole entrance filter on water dispensing board by filter tank bottom aquaporin
Water and air distributing chamber in cap, completes a water distribution；
Water in filter cap cavity is flowed out by the secondary distributing hole of filter cap side wall again, the gap between gravel is bypassed, into filtrate
Layer, completes secondary water distribution.
Therefore, gas and water has water distribution twice and distribution process, it is ensured that the uniformity of water and air distributing during backwash.
The present invention obtains multiple independent water distributions by setting secondary water and air distributing chamber, and secondary water and air distributing chamber being separated
Distribution chamber, in addition, having abandoned traditional bar hole or circular hole, innovation employs the orifice shapes of triangle, increases aperture
Size, blocking can be prevented effectively from, so as to ensure that the uniformity of water and air distributing.Water dispensing board, filter cap and gas-distribution pipe are one
It is body formed, it is easily installed, fix and safeguards.Clever structure of the present invention, combines the excellent of both traditional filtering filter block and filter plate
Gesture, innovation employs new configuration, solves traditional filter block and filter plate is easily blocked, damaged, and assembling is complicated, the problem of cycle is long.
Present invention disclosed above preferred embodiment is only intended to help and illustrates the present invention.Preferred embodiment is not detailed
All details of narration, it is only described embodiment that the invention is not limited yet.Obviously, according to the content of this specification,
It can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is to preferably explain the present invention
Principle and practical application so that skilled artisan can be best understood by and utilize the present invention.The present invention is only
Limited by claims and its four corner and equivalent.
Claims (10)
1. a kind of water and air distributing system, it is characterised in that including water dispensing board, some filter caps and some gas-distribution pipes；
Described water dispensing board is provided with some distributing holes of array；
Described filter cap includes roof；
A pair of sidewalls, it stretches out and horizontal-extending one section laterally from the described side of roof two；
Front and rear wall and some cross walls outside it, described front and rear wall and cross wall are from an extension in described a pair of sidewalls
To another in described a pair of sidewalls, it is equipped with the front and rear wall and cross wall described in the side away from described roof recessed
Groove, and described groove axis on the same line with concave surface in same level；And baffle plate, it is from described roof
Stretch out and flushed with described groove；
Some air distribution holes of row are provided with the two sides of described gas-distribution pipe, and the two ends of described gas-distribution pipe are envelope
Mouthful；
Wherein, it is arranged with the secondary air distribution hole of some rows on the top of described filter cap side wall and bottom is arranged with that some rows are secondary to be matched somebody with somebody
Water hole；The gas-distribution pipe is coordinated in described filter cap by described recess-mounted, and by the roof, the pair of side
Wall, described baffle plate and the gas-distribution pipe limit some water and air distributing chambers, and described filter cap is arranged on described water dispensing board,
And a described distributing hole corresponds to described water and air distributing room.
2. water and air distributing system according to claim 1, it is characterised in that described water and air distributing system also includes supply
System, described air supply system includes main tracheae, and described main tracheae connects some bronchuses, and described bronchus stretches into described
Gas-distribution pipe in.
3. water and air distributing system according to claim 2, it is characterised in that be additionally provided with described water dispensing board for described
The first gas tube orifice that bronchus passes through, described gas-distribution pipe is provided with the second gas tube orifice corresponding with the first described gas tube orifice.
4. water and air distributing system according to claim 1, it is characterised in that the width of described gas-distribution pipe is less than adjacent two
The spacing of an individual described distributing hole.
5. water and air distributing system according to claim 1, it is characterised in that from the side wall of described filter cap level laterally
Extended surface is provided with the first bolt hole, is provided with and the first described bolt hole pair between a two neighboring described distributing hole
The second bolt hole answered.
6. water and air distributing system according to claim 1, it is characterised in that along the pipe range direction of described gas-distribution pipe at it
Two sides are provided with an air distribution hole described in a row；A described air distribution hole, described secondary air distribution hole and described two
The shape of secondary distributing hole is tri-angle-holed.
7. water and air distributing system according to claim 1, it is characterised in that described filter cap is provided with the horizontal stroke described in one
Wall, the water and air distributing chamber obtained described in four is limited through the roof, the pair of side wall, described baffle plate and the gas-distribution pipe
Room.
8. water and air distributing system according to claim 1, it is characterised in that described baffle plate setting is in described filter cap
It is middle；The cross section of described filter cap is trapezoidal；The cross section of described gas-distribution pipe is square.
9. water and air distributing system according to claim 1, it is characterised in that described filter cap is by high density polyethylene (HDPE) material
Be integrally formed obtained, described gas-distribution pipe be integrally formed by PVC-U material it is obtained.
10. a kind of backwash technique of the water and air distributing system described in utilization claim 1~9, it is characterised in that backwash
When, gas is flowed into through described bronchus forms one layer of stable air cushion layer in described gas-distribution pipe, gas is again by described one
Secondary air distribution hole outflow, completes a distribution；Subsequently into one layer of air cushion layer of described water and air distributing chamber formation, gas is from described
The outflow of secondary air distribution hole, bypass the gap between gravel, into filter material layer, complete secondary distribution；Water through described water dispensing board by
A described distributing hole enters water and air distributing chamber, completes a water distribution；Then water is flowed out by described secondary distributing hole again,
The gap between gravel is bypassed, into filter material layer, secondary water distribution, twice water distribution and distribution process is completed, it is ensured that match somebody with somebody during backwash
The uniformity of water distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408024.4A CN107055771B (en) | 2017-06-02 | 2017-06-02 | Water and gas distribution system and backwashing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408024.4A CN107055771B (en) | 2017-06-02 | 2017-06-02 | Water and gas distribution system and backwashing process thereof |
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| CN107055771B CN107055771B (en) | 2023-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111498982A (en) * | 2020-05-07 | 2020-08-07 | 水木清环(苏州)环保科技有限公司 | Three-section type efficient BAF sewage treatment device |
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| CN104623935A (en) * | 2013-11-06 | 2015-05-20 | 上海市政工程设计研究总院（集团）有限公司 | Small rapid filter equipped with air and water backwash system and filtering and backwashing technology thereof |
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| US5108627A (en) * | 1991-02-01 | 1992-04-28 | F.B. Leopold Company, Inc. | Filter underdrain block |
| CN1962021A (en) * | 2005-11-10 | 2007-05-16 | 深圳市清泉水系统工程设备有限公司 | Large resistance gas distribution, medium resistance water distribution system and device for water gas back flush of filter tank |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111498982A (en) * | 2020-05-07 | 2020-08-07 | 水木清环(苏州)环保科技有限公司 | Three-section type efficient BAF sewage treatment device |
| CN111498982B (en) * | 2020-05-07 | 2023-05-19 | 水木清环(苏州)环保科技有限公司 | Three-section type high-efficiency BAF sewage treatment device |
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| CN107055771B (en) | 2023-03-31 |
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