CN202020948U - Filtering device and water treatment system - Google Patents
Filtering device and water treatment system Download PDFInfo
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- CN202020948U CN202020948U CN2011200869396U CN201120086939U CN202020948U CN 202020948 U CN202020948 U CN 202020948U CN 2011200869396 U CN2011200869396 U CN 2011200869396U CN 201120086939 U CN201120086939 U CN 201120086939U CN 202020948 U CN202020948 U CN 202020948U
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- lautertuns
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Abstract
The utility model provides a filtering device which can perform back flush equably to whole floating filter material layers not only when it is rainy, but also when it is fine. The filtering device comprises a plurality of rising-flow filtering grooves (24) which are provided with floating filter material layers (81) and meshes (82), a filtered water joint storage portion (25) for concentrating filtered water from the filtering grooves (24), a raw water passageway (23) enabling raw water to flow into the filtering grooves (24) in filtering process, water-discharging pipes (51) for discharging the washing waste water out of the filtering grooves (24) in the back flush process and water-discharging valves (53) arranged on all the water-discharging pipes. During the back flush process, the water-discharging valves (53) are opened to enable the water stored in the filtered water joint storage portion (25) to reversely flow downwards, accordingly the filtering grooves (24) can perform back flush. The meshes (82) have the same opening rate on all the filtering grooves (24), and the opening rate is more than 0.5% and less than 10%.
Description
Technical field
The utility model relates to being used for filtering and comprises high concentration suspended solid (Suspended Solid such as sewage, industrial wastewater, agricultural effluent, rainwater, hereinafter referred to as " SS ") a large amount of former water filter and possess the water treatment system of this filter, particularly utilize the rising streaming filter of floating filter material and possess the water treatment system of this filter.
Background technology
All the time, the single treatment of the water treatment system of using in sewage treatment plant all is to be undertaken by the coprecipitation mode that utilizes initial sedimentation basin etc.In such processing,, in the biological reaction tanks such as aeration tank of back segment, need aeration rate more because Separation of Solid and Liquid is bad.In addition, in existing processing, mud that comes out from initial sedimentation basin and the mud equivalent of coming out from the final sedimentation tank of the back segment of biological reaction tank produce, and the Treatment of Sludge cost is bigger.For solving such problem, shown in JP2008-697A like that, can realize that the rising streaming filter of Separation of Solid and Liquid more highly is suggested.
In such filter, the floating filter material that proportion is little is filled in the lautertuns and forms the floating filter material layer, at the upside configuration mesh thing of this floating filter material layer, flows out in order to prevent floating filter material.During filtration treatment, by former water being flowed from bottom to top and, just can catching SS at the floating filter material layer by the floating filter material layer.In addition, by filtration treatment, the floating filter material layer produces when stopping up, and makes the downward adverse current of water carry out back flush and handles.When back flush is handled, by sinking, enlarge under the floating filter material course and launch, thus, SS separates with floating filter material, and separated SS and washes together are discharged from the filtration system outside.
Summary of the invention
The problem that invention will solve
But, as shown in figure 11, in so existing filter, following phenomenon is arranged: when back flush is handled, be supplied to the back flush water (employed water is handled in back flush) of floating filter material layer 181 from the top of net 182 downwards, only flow through and stop up less, current and be easy to local and do not flow through floating filter material layer 181 integral body equably.That is, following phenomenon is arranged: in the floating filter material layer 181, stop up less part and launch, back flush water is that this part is flow through in the concentrated area, and on the other hand, other parts of floating filter material layer 181 are not fully launched.Therefore, have and can not impartially wash under the phenomenon, particularly lautertuns 124 sweeping situations of floating filter material layer 181, such problem is more outstanding.
In addition, during the rainy day, the SS size that is comprised in the former water is big, is captured on downside (upstream side) top layer of floating filter material layer 181, therefore, back flush is discharged from when handling easily, and is relative therewith, when fine, the SS size that is comprised in the former water is little, enter to the depths (downstream) of floating filter material layer 181 easily, therefore, back flush is difficult to be discharged from when handling.So, in existing filter 102, when particularly fine, be difficult to carry out equably back flush and handle.
In addition, in existing filter 102, because back flush water is mobile inhomogeneous, thereby the local change of flow velocity is big, and a part of floating filter material 110 can be from discharge pipe 151 outflows.
The utility model is made for solving above-mentioned existing issue, purpose is to provide a kind of filter and possesses this filter water treatment system, described filter, be not only when the rainy day, also can handle when fine and wash floating filter material layer integral body equably by back flush, and the outflow of floating filter material can prevent that back flush from handling the time.
The means of dealing with problems
Filter of the present utility model possesses: the lautertuns of a plurality of rising streamings has the floating filter material layer, and only disposes net at this floating filter material layer upside; The common storing section of filtered water is arranged at above described a plurality of described lautertuns, stores the filtered water of being filtered by this lautertuns; A plurality of former water passages, corresponding with each described lautertuns and be provided with and be connected with this lautertuns bottom, be used for when filtration treatment, making former water to flow into described lautertuns; A plurality of drainage channels, corresponding with each described lautertuns and be provided with and be connected with this lautertuns bottom, be used for when back flush is handled washes discharged described lautertuns outside; A plurality of draining valves, corresponding with each described drainage channel and be provided with, when described filtration treatment, be closed, described back flush is opened when handling;
When described back flush is handled, by opening described draining valve, utilize gravity to make to store the downward adverse current of described filtered water in the common storing section of described filtered water, make the described lautertuns can back flush,
It is characterized in that the aperture opening ratio of described net is identical on whole described lautertuns, and this aperture opening ratio is more than 0.5% below 10%.
Like this, identical and more than 0.5% below 10% on whole lautertuns by setting the mesh openings rate, can make in the pressure loss of lautertuns when beginning is handled in back flush, with respect to the pressure loss that is produced by the floating filter material layer, the ratio of the pressure loss that is produced by net becomes big.Thus, when back flush was handled, back flush water just can only not concentrate on the part of floating filter material layer, can make the dispersion of back flush water equalization and pass through the floating filter material layer, therefore, can and wash the whole impartial expansion of floating filter material layer.In addition, the decline flow velocity of back flush water can locally not become big, and floating filter material can not flow out from drain passageway yet.In addition, the aperture opening ratio of net is meant the ratio of the area (total aperture area) of whole openings with respect to the net area of plane herein.
Herein, if the aperture opening ratio of net less than 0.5%, the resistance of back flush water during by net sharply increases, therefore, back flush is difficult to guarantee enough flow velocitys when handling, it is insufficient that clean result becomes.In addition, if the aperture opening ratio of net is greater than 10%, can not make the pressure loss that produces by net enough big with respect to the ratio of the pressure loss that produces by the floating filter material layer, the SS that size is little when fine day enters under the situation of depths of floating filter material layer, back flush water will be concentrated to flow through and stop up less, the easy place of current, just is difficult to wash equably floating filter material layer integral body.
In addition, the expectation embodiment of this utility model, it is characterized in that, further possesses former water supply unit, described former water supply unit is supplied to described lautertuns from former water supply position Jie that the hydraulic head surface with respect to described lautertuns exceeds specified altitude by described former water passage with described former water, described former water passage comprises: overflow part, allow described former water to supply with the overflow of position during described filtration treatment, and described back flush stop described former water when handling and supply with the overflow of position to this former water passage inside from described former water to this former water passage inside from described former water; Pressure-regulating portion forms from the vertical downward extension of described overflow part, adjusts pressure in the described lautertuns according to the water level that flows into inner described former water; Former water inlet is formed at the downstream of described pressure-regulating portion, injects described former water from described lautertuns bottom.
According to this formation, because when back flush is handled, be stopped from of the former water supply of former water supply unit to lautertuns, therefore, do not have from the former water of former water inlet to the common storing section of filtered water and flow, the current in the lautertuns can only become the sinking of the back flush water generates of being supplied with by the common storing section of filtered water.Therefore, the flow velocity when back flush is handled accelerates, and the back flush processing time shortens.And then, because the amount of the filtered water of using can reduce back flush and handle the time, just can improve the rate of recovery (quantity delivered of the amount/former water of the filtered water that obtains in the filtration treatment of being undertaken by lautertuns) of filtered water.
In addition, under the situation that the pressure loss that is produced by the floating filter material layer through filtration treatment increases, the water level of pressure-regulating portion rises, but SEA LEVEL VARIATION according to this pressure-regulating portion, just can easily hold the blockage of floating filter material layer, therefore, just carry out determining the running control of filters such as back flush processing time easily based on the water level of pressure-regulating portion.
In addition, this utility model is the embodiment of expectation further, it is characterized in that the suction inlet of described drainage channel is the broadening formation shape to described lautertuns bottom surface opening.
In this constituted, because the suction inlet of drainage channel is to the bottom surface of lautertuns opening, therefore, floating filter material was inhaled into suction inlet and flows out in the time of preventing that back flush from handling.In addition, enlarge, just can reduce suction resistance because suction inlet is broadening formation.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, described draining valve is to make as the valve rod of the turning cylinder core shift valve with respect to valve body center core shift.
In this constitutes,, just can when valve opens and closes, only apply the moment torque valve is opened and closed owing to use the core shift valve as draining valve.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, the size of floating filter material that constitutes described floating filter material layer greater than 4mm smaller or equal to 20mm.
Herein, if floating filter material is of a size of below the 4mm, then following neighbouring (the top layer part) of floating filter material layer stopped up SS arranged, and just can't use floating filter material layer integral body to filter, and the lasting processing time of filtration treatment will significantly shorten.In addition, if greater than 20mm, then the rate of removing of SS reduces.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, the density of described floating filter material is greater than 0.4g/cm when using preceding and/or use
3Smaller or equal to 0.8g/cm
3
Herein, if before using and/or the density of the floating filter material when using be 0.4g/cm
3Below, then when back flush was handled, floating filter material can not fully launch in sinking, just can not fully wash the floating filter material layer.In addition, if before using and/or the density of the floating filter material when using greater than 0.8g/cm
3, just might be when back flush be handled, floating filter material launches excessively to flow out from discharge pipe.
In addition, this utility model is the embodiment of expectation further, it is characterized in that described drainage channel is split up into a plurality of arms with described suction inlet, overlook from described lautertuns, the former water inlet of described former water passage and the suction inlet of described drainage channel are disposed at the position that does not overlap mutually.
In this constituted, when back flush was handled, washes disperseed to flow into drainage channel from the suction inlet of each arm.Thus, the SS that just can equably the lautertuns bottom surface be piled up in wider scope drinks up.In addition, overlook from lautertuns, the former water inlet of former water passage and the suction inlet of drainpipe are disposed at the position that does not overlap mutually, therefore, just are not former water inlet but the bottom surface of lautertuns under the suction inlet that attraction becomes the strongest when draining.Thus, the SS that just more effectively piles up on the bottom surface with lautertuns drinks up.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, a plurality of described lautertuns and described former water supply unit are set up in parallel in prescribed direction, and this former water supply unit is the tank that its bottom surface is supported by the domain, a plurality of described former water passages with the direction of described prescribed direction orthogonal on be set up in parallel, and further have the horizontal pathways portion that extends horizontally to described former water inlet from described pressure-regulating portion lower end.
With a plurality of lautertuns under the situation that prescribed direction is set up in parallel, the quantity of the lautertuns of setting increases more, filter is whole just to become long more in described prescribed direction.With respect to the former water supply unit of lautertuns and column direction be under the situation of former water supply unit and described prescribed direction orthogonal, usually, filter integral body is elongated in described prescribed direction, just the former water supply unit of needs is also elongated in described prescribed direction thereupon.Relative therewith, as above-mentioned formation, with respect to the former water supply unit of lautertuns and column direction be under the situation of described prescribed direction, even the quantity of the lautertuns that is provided with increases, do not need to make former water supply unit long in described prescribed direction yet, therefore, just can improve the design freedom of former water supply unit, reduce the area that is provided with of former water supply unit.In addition, here and direction described prescribed direction orthogonal strictly are not defined as and become 90 ° direction with described prescribed direction, only otherwise violate the application's invention aim, comprise the scope that can reach described effect yet.
In addition, in this constituted, the shape of former water passage was by the pressure-regulating portion of extending in vertical direction and constitute the L font from the horizontally extending horizontal pathways in its lower end portion, and former water supply unit is situated between with lautertuns and is connected by so former water passage of L font.
In addition,, just can realize and the common same design of tank, just can easily guarantee framed intensity by adopting tank that its bottom surface supported by the domain as former water supply unit.In addition,, but support, just can improve application property etc., thereby enlarge the design freedom of former water supply unit by making less grade of reinforcement by the domain because the bottom surface of former water supply unit is not to be placed in the air.In addition, the domain is meant the pedestal that supports the bottom surface, also comprises the structure that can support former water supply unit except that ground.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, the area of section of described horizontal pathways portion is more than 0.002 below 0.1 with respect to the ratio of lautertuns area.
Herein, the lautertuns area is meant the area of section of horizontal direction that each lautertuns of position is set in net.If this ratio is less than 0.002, then the pressure loss in the horizontal pathways portion becomes big, and the former water water level of pressure-regulating portion rises.Therefore, just need the height of the former water supply unit of setting higher, be unfavorable for guaranteeing the framed intensity of former water supply unit and reducing cost.In addition, if this ratio greater than 0.1, even might can not guarantee enough flow velocitys when the rainy day that flow velocity accelerates, will be piled up SS in the former water passage.
In addition, this utility model is the embodiment of expectation further, it is characterized in that, the area of section of described horizontal pathways portion changes according to its path-length, make the area of section of the short described horizontal pathways portion of this path-length little, make the area of section of the long described horizontal pathways portion of this path-length big.
In this constitutes, change the area of section of horizontal pathways portion according to path-length, just can suppress thus because the water-head of the caused pressure-regulating portion of pressure loss difference on each former water passage, therefore, can estimate water level extent (blocked state of floating filter material layer) on lautertuns more accurately.Thus, design the time of back flush processing and the height of former water supply unit easily.
In addition, water treatment system of the present utility model is characterized in that, possesses above-mentioned filter and biological treating tank, and described biological treating tank is arranged at the downstream of described filter, and the filtered water of being supplied with by this filter is carried out a biological disposal upon.
According to this formation, compare with existing coprecipitation mode, no matter when being the rainy day or during fine day, can both carry out single treatment effectively, therefore, can significantly cut down the aeration power in the biological treating tank by filter.
The invention effect
Filter of the present utility model and water treatment system not only when the rainy day, also can be handled by back flush when fine and wash floating filter material layer integral body equably.In addition, because back flush water evenly flows, just do not have floating filter material when back flush is handled and flow out.
Description of drawings
Fig. 1 is the block diagram of the water treatment system of the 1st embodiment of the present utility model.
Fig. 2 is the vertical view of filter, washes groove and the washes solid-liquid separation tank of same system.
Fig. 3 is the A-A perspective view of the filter of Fig. 2.
Fig. 4 is the B-B perspective view of the filter of Fig. 2.
Fig. 5 is the front view that is used for the drainpipe arm of same filter.
Fig. 6 is the oblique view that is used for the floating filter material of same filter.
Fig. 7 is the perspective view that is used to illustrate that the back flush of same filter is handled.
Fig. 8 is the vertical view of filter, washes groove and the washes solid-liquid separation tank of the water treatment system of the 2nd embodiment of the present utility model.
Fig. 9 is the A-A perspective view of the filter of Fig. 8.
Figure 10 is the vertical view of same filter.
Figure 11 is the perspective view of lautertuns of the filter of prior art.
Description of reference numerals
1 water treatment system
2,12 filters
3 washes grooves
4 washes solid-liquid separation tanks
5 biological treating tanks
6 final sedimentation tanks
10 floating filter materials
21,31 pumps
22,42 former water supply units
23,43a, 43b, 43c, the former water passage of 43d
24 lautertuns
The common storing section of 25 filtered water
The outlet of 50 filtered water stream
51 drainpipes
52 arms
53 draining valves
71 overflow part
72 pressure-regulating portion
73a, 73b, 73c, 73d horizontal pathways portion
74 former water inlets
81 floating filter material layers
82 nets
The specific embodiment
(the 1st embodiment)
Below preferred embodiment of the present utility model is described.As shown in Figure 1, the water treatment system 1 of the present embodiment possesses: filter 2; Biological treating tank 5 is arranged at the downstream of filter 2, and the filtered water of being supplied with by this filter 2 is carried out a biological disposal upon; Final sedimentation tank 6 is arranged at the downstream of biological treating tank 5, make be contained in by this biological treating tank 5 supply with through the solid deposits in the water after the biological treatment and separate.In addition, water treatment system 1 further possesses: washes groove 3, the washes of being discharged when being used for concentrating 2 back flushes of aftermentioned filter to handle; Washes solid-liquid separation tank 4, the solid deposits that makes in the washes to be comprised is also separated, and supernatant water is supplied to biological treating tank 5.
With no rainwater flow into fine the time the unit interval max-flow go into the water yield and be made as Q, the unit interval maximum throughput the during rainy day is made as under the situation of nQ (n is the setting of n＞1), water treatment system 1 is according to flowing into water yield F, running as follows.At first, inflows water yield F is under the following situation of Q when fine etc., for the whole former water (that is, for inflow water yield F) that flows in the water treatment system 1, undertaken it being entered system outsides such as river after single treatment, biological treating tank 5 and final sedimentation tank 6 carry out after-treatment by filter 2.In addition, inflow water yield F is under the situation of Q＜F≤nQ during the rainy day etc., and convection current is gone into water yield F and carried out single treatment in filter 2, only Q is carried out after-treatment in biological treating tank 5 and final sedimentation tank 6.That is, in the filtered water that filter 2 is filtered, Q carried out after-treatment after, enter the system outside, but F-Q then do not carried out after-treatment and directly discharges the system outside.In addition, like this F-Q is not carried out after-treatment and directly discharges the system outside, but since during the rainy day water treatment system 1 handled former water diluted by rainwater, only carry out single treatment and just can become enough clean waters by filter 2.In addition, when flowing into water yield F, only make nQ inflow filter 2, directly discharge the system outside, or utilize other equipment that are arranged on the water treatment system to handle for part greater than nQ greater than nQ.In addition, the value of n can be set according to the concrete situation in each city that water treatment system 1 is set, and the disposal ability of each constitution equipment of water treatment system 1 depends on such concrete condition.
In addition, as shown in Figure 2, filter 2 possesses downstream from the upstream: former water supply unit 22, former water passage 23 and rising streaming lautertuns 24.In this embodiment, whole 4 lautertuns 24 are gone up configuration side by side in prescribed direction (hereinafter referred to as described prescribed direction).In addition, the number of lautertuns 24 is if a plurality of, and then this number is arbitrarily.In addition, former water supply unit 23 is arranged side by side with these lautertuns 24, extends on described prescribed direction and is provided with, and this is provided with direction is the directions (hereinafter referred to as the Y direction) that are orthogonal to described prescribed direction with respect to lautertuns 24.
On former water supply unit 22, use pump 21 to draw water.In addition, the washes of concentrating in the washes groove 3 is sent in the washes solid-liquid separation tank 4 by pump 31.In addition, as described above,, on the path 91 that connects filter 2 and biological treating tank 5, diverge to and be provided with drain passageway 92 for directly the filtered water after the filtration treatment being discharged the system outside.Drain passageway 92 is provided with and is used for the discharge control valve 93 of controlled filter water to the discharge of system outside.
In addition, as shown in Figures 3 and 4, each lautertuns 24 possesses floating filter material layer 81 and is disposed at the net 82 of floating filter material layer 81 upside.In addition, filter 2 is except above-mentioned formation.Also possess the common storing section 25 of filtered water above these lautertuns 24, the common storing section of this filtered water is used for the filtered water of being filtered by each lautertuns 24 is concentrated and stored.Be formed with filtered water stream outlet 50 on the position apart from net 82 specified altitudes on the side of the common storing section 25 of filtered water, filtered water flows out from this filtered water stream outlet 50, is sent to biological treating tank 5 etc.In addition, when back flush was handled, the common storing section 25 of filtered water was supplied with the filtered water that stores from top to bottom with respect to the lautertuns 24 that carries out the back flush processing.
Former water supply unit 22 is supplied to lautertuns 24 from former water supply position Jie that the hydraulic head surface with respect to lautertuns 24 exceeds specified altitude by former water passage 23 with former water.In addition, in the present embodiment, the state setting of former water supply unit 22 to be lifted with respect to ground.
Former water passage 23 is used for making when filtration treatment the former water of supplying with from former water supply unit 22 to flow into lautertuns 24, is connected with the top of former water supply unit 22 and the bottom of each lautertuns 24.Former water passage 23 is set on each lautertuns 24, and in the present embodiment, whole 4 former water passages 23 dispose side by side in described prescribed direction.In addition, former water passage 23 is possessed downstream by the upstream: overflow part 71, pressure-regulating portion 72 and former water inlet 74.Overflow part 71 is that permission former water when filtering is supplied with the overflow of position to these former water passage 23 inside from former water, and stops former water from the part of former water supply position to the overflow of these former water passage 23 inside when back flush.The function of such overflow part 71 for example can have valve member by being provided with, the opening and closing device of door member etc. realizes on overflow part 71.In addition, in the application's accompanying drawing, omitted demonstration to such opening and closing device.In addition, pressure-regulating portion 72 is extended downwards from overflow part 71 along vertical direction and is formed, and is the part of adjusting the pressure in the lautertuns 24 according to the water level that flows into inner former water.In addition, former water inlet 74 is used for injecting former water from the bottom of lautertuns 24, is formed at the downstream of pressure-regulating portion 72.In addition, also can constitute overflow part 71 as follows: former water was set during the rainy day supplies with the position that this position is set when higher, fine is lower etc., according to circumstances adjust former water and supply with the position.If it is lower when fine day that former water supply position is set, the lift when then fine shortens, and therefore, can reduce the electricity charge of drawing water with pump.In addition, as the present embodiment, be exposed to outside overflow part 71 and have opening and closing device, can make the maintenance etc. of permission, shut-down operation or the opening and closing device of overflow become easy by making.
In addition, filter 2 also possesses the drainpipe (being equivalent to drainage channel) 51 that is arranged on each lautertuns 24 and is arranged at draining valve 53 on each drainpipe 51 except that having above-mentioned formation.Drainpipe 51 is arranged at the bottom of lautertuns 24, is used for when back flush is handled the washes that uses being handled in back flush and is expelled to lautertuns 24 outsides.Draining valve 53 is closed when filtration treatment, is opened when back flush is handled.According to such formation, filter 2 is by opening draining valve 53, utilizes gravity to make to store the downward adverse current of filtered water in the common storing section 25 of filtered water, thereby can carry out back flush and handle by this filtered water is ejected from drainpipe 51.Thus, the maintenance of device is simple and easy.In addition, as draining valve 53, the preferred use as the valve rod of turning cylinder core shift valve with respect to valve body center core shift.By using the core shift valve, just can when valve opens and closes, only apply the moment torque valve is opened and closed as draining valve 53.In addition, in the present embodiment, drainpipe 51 is divided into 10 arms (can only see in Fig. 4 that in the face of 5 in face of the paper remaining 5 are positioned at its inboard.)。Owing to washes when back flush is handled disperses to flow into drainpipe 51 from the suction inlet of each arm 52, therefore, the SS that can will be deposited in lautertuns 24 bottom surfaces in wide region more drinks up equably.In addition, the branch number of drainpipe 51 is not limited to 10, so long as many just passable.In addition, the suction inlet of each arm 52 that obtains divided by the base area S of lautertuns 24 with the number T of arm 52 is shared the preferred 0.25m of area S/T
2More than, 5m
2Below.Share area S/T less than 0.25m
2, then the number of suction inlet becomes many, thereby uneconomical.On the other hand, share area S/T greater than 5m
2, dead-space volume can appear in the sharing on the regional end of bottom surface of then distributing to the lautertuns 24 of each arm 81, and solid matter (SS) can be piled up in this.
As shown in Figure 5, the suction inlet 52a of the arm 52 of drainpipe 51 is to the bottom surface of lautertuns 24 24a opening.Like this, because the suction inlet 52a of drainpipe 51 is to the bottom surface of lautertuns 24 24a opening, therefore, floating filter material 10 (with reference to Fig. 6) is inhaled into suction inlet 52a and flows out in the time of preventing that back flush from handling.In addition, suction inlet 52a's is shaped as the broadening formation shape.Because suction inlet 52a is broadening formation expansion, just can reduce suction resistance like this.In addition, be not provided with on the drainpipe 51 under the situation of arm 52, on the end of drainpipe 51, form the suction inlet of described shape.
Floating filter material layer 81 is made of the most windmill shape floating filter materials 10 that are filled in the lautertuns 24, prevents that by net 82 this floating filter material 10 from flowing out upward.
The size of the floating filter material 10 that preferably, uses in the utility model greater than 4mm smaller or equal to 20mm.Herein, if floating filter material 10 is of a size of below the 4mm, then following neighbouring (the top layer part) of floating filter material layer 81 stopped up SS arranged, and just can't use floating filter material layer 81 integral body to filter, and the lasting processing time of filtration treatment will significantly shorten.In addition, if greater than 20mm, then the rate of removing of SS reduces.
In addition, the shape of floating filter material 10 is not limited to the windmill shape, but preferred concavo-convex or tubular.Concavo-convex be not meant cube or the so simple shape of spheroid herein, and be meant the floating filter material 10 of Fig. 6 such possess some concavo-convex shapes at outer surface.Concavo-convex floating filter material 10 like this has the advantage that can catch a large amount of SS forming non-directional big gap each other.In addition, the floating filter material of tubular such as cylinder has the advantage that can catch a large amount of SS too.In addition, if the floating filter material of above-mentioned concavo-convex or tubular, its size is meant the maximum of outside dimension.
The density of the floating filter material 10 when in addition, preferably using preceding and/or use is greater than 0.4g/cm
3Smaller or equal to 0.8g/cm
3If before using and/or the density of the floating filter material 10 when using be 0.4g/cm
3Below, then when back flush was handled, floating filter material 10 can not fully launch in sinking, can not fully wash floating filter material layer 81.In addition, if before using and/or the density of the floating filter material 10 when using greater than 0.8g/cm
3, just might be when back flush be handled, floating filter material 10 launches excessively to flow out from discharge pipe 51.
As material with such rerum natura, foaming macromoleculars such as polypropylene, polystyrene, polyethylene are arranged, in the middle of these, can control foam degrees separated foam type polyethylene foamed hear resistance, chemical resistance, have excellent weather resistance, thereby preferred.Net 82 is made of punch metal etc.Setting its aperture opening ratio is identical on whole lautertuns 24, and is more than 0.5% below 10%.In addition, the opening diameter of preferred net 82 is at least more than 1mm, and is littler than the size of floating filter material 10.If opening diameter is less than 1mm, then friction becomes big, is difficult to the flow velocity that is only obtained stipulating by gravity when back flush is handled.
Like this, identical and more than 0.5% below 10% on whole lautertuns 24 by setting net 82 aperture opening ratios, can make in the pressure loss of lautertuns 24 when beginning is handled in back flush, with respect to the pressure loss that is produced by floating filter material layer 81, the ratio of the pressure loss that is produced by net 82 becomes big.Thus, when back flush was handled, back flush water just can only not concentrate on the part of floating filter material layer 81, can make the dispersion of back flush water equalization and pass through floating filter material layer 81, therefore, can and wash the 81 whole impartial expansion of floating filter material layer.In addition, the decline flow velocity of back flush water can locally not become big, and floating filter material 10 can not flow out from discharge pipe 51 yet.In addition, the aperture opening ratio J/I of net 82 is meant the ratio of area (total aperture area) J of whole openings with respect to net 82 area of plane I herein.
Herein, if the aperture opening ratio of net 82 less than 0.5%, the resistance of back flush water during by net 82 sharply increases, therefore, back flush is difficult to guarantee enough flow velocitys when handling, it is insufficient that clean result becomes.In addition, if the aperture opening ratio of net 82 is greater than 10%, can not make the pressure loss that produces by net 82 enough big with respect to the ratio of the pressure loss that produces by floating filter material layer 81, the SS that size is little when fine day enters under the situation of depths of floating filter material layer 81, back flush water will be concentrated to flow through and stop up less, the easy place of current, just is difficult to wash equably floating filter material layer 81 integral body.
Then, with reference to Fig. 4 the filtration treatment of filter 2 is described.In addition, in Fig. 3, Fig. 4 and Fig. 7 described later, represent current with arrow.At first, the former water by pump 21 is extracted out from former water supply unit 22 flows into each former water passage 23 equably from overflow part 71.The former water that flows in the former water passage 23 is situated between by in former water water filling port 74 each lautertuns 24 of inflow.Then, former water is caught by floating filter material 10 during from the bottom up by floating filter material layer 81 and is contained in SS in the former water, and the filtered water by net 82 is stored in the common storing section 25 of filtered water.Store filtered water in the common storing section 25 of filtered water and reach the height of filtered water stream outlet 50, the filtered water that then surpasses this height is just from filtered water stream outlet 50 outflows, and is sent to biological treating tank 5 etc.
Then, with reference to Fig. 7 the back flush processing of filter 2 is described.By filtration treatment, the amount of the SS that floating filter material layer 81 is caught increases, and then the pressure loss of each floating filter material layer 81 increases gradually, but should increase inhomogeneous usually.Therefore, just need 24 of each lautertuns not being carried out back flush handles.The increase of the pressure loss of each floating filter material layer 81, the degree that soon pressure-regulating portion 72 water levels rose after the water level of pressure-regulating portion 72 began with respect to filtration treatment in the time of can be from filtration treatment is learnt.Therefore, in filter 2 of the present utility model, when the water level of the pressure-regulating portion 72 of each former water passage 23 reaches predetermined water level,, begin back flush automatically and handle the lautertuns 24 that is connected with the former water passage 23 that reaches this water level.Like this,, just can easily hold the blockage of floating filter material layer 81, therefore, just carry out determining the running control of filters 2 such as back flush processing time easily based on the water level of pressure-regulating portion 72 by the SEA LEVEL VARIATION of pressure-regulating portion 72.
When back flush was handled, the draining valve 53 that carries out the lautertuns 24 of back flush processing was opened, and overflow part 71 is closed.Draining valve 53 is opened, and then the downward adverse current of filtered water in the common storing section 25 of filtered water is gone into lautertuns 24, and floating filter material layer 81 enlarges downwards and launches thus.Floating filter material layer 81 is unfolded, and the SS that caught of floating filter material 10 separates with floating filter material 10 thus, and separated SS together is discharged from filter 2 outsides by drainpipe 51 and washes.In addition,, can proceed filtration treatment, continue to supply with filtered water to the common storing section 25 of filtered water from the lautertuns 24 that carries out filtration treatment for carrying out lautertuns 24 lautertuns 24 in addition that back flush is handled.
Like this, only open draining valve 53 and just can carry out the back flush processing naturally, just do not need to be provided with special equipments such as pump.In addition, overflow part 71 was closed when back flush was handled, be stopped from of the former water supply of former water supply unit 22 to lautertuns 24, therefore, do not have from the former water of former water inlet 74 to the common storing section 25 of filtered water and flow, the current in the lautertuns 24 can only become the sinking of the back flush water generates of being supplied with by the common storing section 25 of filtered water.Therefore, the flow velocity when back flush is handled accelerates, and the back flush processing time shortens.And then, because the amount of the filtered water of using can reduce back flush and handle the time, improve the rate of recovery (quantity delivered of the amount/former water of the filtered water that obtains in the filtration treatment of being undertaken by lautertuns 24) of filtered water.
Like this, filter 2 of the present embodiment and water treatment system 1 are not only when the rainy day, also can handle when fine and wash floating filter material layer 81 integral body equably, therefore, can not only when the rainy day, turn round by back flush, usually also can turn round, just can improve the property applied flexibly of Apparatus and system.Also not having floating filter material 10 when in addition, back flush is handled flows out.
In addition, compare, no matter when being the rainy day or during fine day with existing coprecipitation mode, can both carry out single treatment effectively by filter 2, in addition, because it is good to keep the water quality that flows into the water in the biological treating tank 5, therefore, can significantly cut down aeration power in the biological treating tank 5.
(the 2nd embodiment)
Then, with reference to Fig. 8 to Figure 10 the application's the 2nd embodiment is described.The filter 12 of the water treatment system of the present embodiment, former water supply unit that being provided with aspect direction and the structure thereof of direction and structure thereof, former water passage is set is different with the 1st embodiment.In addition, the proportion of the aperture opening ratio of net 82, floating filter material 10 and density, filtration treatment and back flush processing etc. are basic identical with the 1st embodiment, therefore, below omit its explanation.In addition, in Fig. 8 to Figure 10,, use symbol 43a respectively for the former water passage that length has nothing in common with each other, 43b, 43c, 43d represents.
In the present embodiment, use tank that its bottom surface supported by the domain as former water supply unit 42, this former water supply unit 42 is set up in described prescribed direction side by side with respect to lautertuns 24.In addition, four former water passage 43a～43d are set up in parallel in the Y direction.Each former water passage 43a～43d also possesses the 73a～73d of horizontal pathways portion except that possessing above-mentioned overflow part 71, pressure-regulating portion 72 and former water inlet 74, this horizontal pathways portion extends horizontally to former water inlet 74 from pressure-regulating portion 72 lower ends.As shown in Figure 9, the horizontally extending horizontal pathways 73a～73d of portion constitutes the L font to the shape of former water passage 43a～43d by the pressure-regulating portion 72 of vertical direction extension with from its lower end.The length of the 73a～73d of horizontal pathways portion is adjusted according to pressure-regulating portion 72 to the distance of each lautertuns 24.
In addition, in the present embodiment, the area of section of each 73a～73d of horizontal pathways portion changes according to its path-length, makes the area of section of the short horizontal pathways portion of this path-length little, and makes the area of section of the long horizontal pathways portion of this path-length big.Particularly, if path-length is 2 times, be 2 times of √ with regard to the area of section that makes horizontal pathways portion, if path-length is 3 times, be 3 times of √ with regard to the area of section that makes horizontal pathways portion.
In Figure 10, omitted demonstration to a part of parts such as floating filter material layer 81, nets 82, with dashed lines represents to be disposed at the 73a～73d of horizontal pathways portion under the lautertuns 24.For at Y direction 4 former water passage 43a～43d arranged side by side, its pass is: the path-length of the path-length of the path-length of the path-length of the 73a of horizontal pathways portion＜73b of horizontal pathways portion＜73c of horizontal pathways portion＜73d of horizontal pathways portion, the area of section of the area of section of the area of section of the area of section of the 73a of horizontal pathways portion＜73b of horizontal pathways portion＜73c of horizontal pathways portion＜73d of horizontal pathways portion.
According to this formation, change the area of section of the 73a～73d of horizontal pathways portion according to path-length, just can suppress thus because the water-head of the caused pressure-regulating portion 72 of pressure loss difference on each former water passage 43a～43d, therefore, can estimate water level extent (blocked state of floating filter material layer 81) on lautertuns 24 more accurately.Thus, design the time of back flush processing and the height of former water supply unit 42 easily.
In addition, in the present embodiment, preferably the area of section B of each 73a～73d of horizontal pathways portion with respect to the ratio B/A of lautertuns area A more than 0.002 below 0.1.Herein, the lautertuns area A is meant the area of section of horizontal direction that each lautertuns 24 of position is set in net.If this ratio B/A is less than 0.002, then the pressure loss on the 73a～73d of horizontal pathways portion rises, and the former water water level of pressure-regulating portion 72 rises.Therefore, just need the height of the former water supply unit 42 of setting higher, be unfavorable for guaranteeing the framed intensity of former water supply unit 42 and reducing cost.In addition, if this ratio B/A greater than 0.1, even might can not guarantee enough flow velocitys when the rainy day that flow velocity accelerates, will pile up SS in former water passage 43a～43d.
In addition, as Fig. 9 and shown in Figure 10, in the present embodiment, former water inlet 74 is formed on the bottom surface 24a of lautertuns 24., preferably, overlook from lautertuns 24, the former water inlet 74 of former water passage 43a～43d and the suction inlet 52a of drainpipe 51 are disposed at the position that does not overlap mutually herein.By former water inlet 74 of such configuration and suction inlet 52a, just not former water inlet 74 but the bottom surface 24a of lautertuns 24 under the suction inlet 52a that attraction becomes the strongest when draining.Thus, just can more effectively the last SS that piles up of the bottom surface 24a of lautertuns 24 be drunk up.
According to the water treatment system of the present embodiment,, can also obtain following effect except obtaining the effect identical with the water treatment system 1 of the 1st embodiment.That is: with a plurality of lautertuns 24 under the situation that described prescribed direction is set up in parallel, the quantity of the lautertuns 24 of setting increases more, filter is whole just to become long more in described prescribed direction.With respect to the former water supply unit 42 of lautertuns 24 and column direction be under the situation of Y direction of former water supply unit and described prescribed direction orthogonal, usually, filter integral body is elongated in described prescribed direction, just needs former water supply unit also elongated in described prescribed direction thereupon.Relative therewith, as above-mentioned formation, with respect to the former water supply unit 42 of lautertuns 24 and column direction be under the situation of described prescribed direction, even the quantity of the lautertuns 24 that is provided with increases, do not need to make former water supply unit 42 long in described prescribed direction yet, just can improve the design freedom of former water supply unit 42, reduce the area that is provided with of former water supply unit 42.
In addition,, just can realize and the common same design of tank, just can easily guarantee framed intensity by adopting tank that its bottom surface supported by the domain as former water supply unit 42.In addition, owing to former water supply unit 42 directly can be arranged on the ground, just can improve application property etc., thereby enlarge the design freedom of former water supply unit 42 by making less grade of reinforcement.
In addition, filter of the present utility model and water treatment system are not limited to above-mentioned embodiment, can carry out various distortion.For example, water treatment system of the present utility model also can further possess other equipment at the leading portion of filter or the back segment of final sedimentation tank.In addition, in the above-described embodiment, convection current is gone into water yield X when surpassing Q, and situation about handling at biological treating tank 5 and 6 couples of Q of final sedimentation tank is illustrated, but according to circumstances, also the whole direct discharge system outsides of the filtered water that filter can be supplied with.
Claims (11)
1. filter possesses:
The lautertuns of a plurality of rising streamings has the floating filter material layer, and only disposes net at this floating filter material layer upside;
The common storing section of filtered water is arranged at above a plurality of described lautertuns, stores the filtered water of being filtered by this lautertuns;
A plurality of former water passages, corresponding with each described lautertuns and be provided with and be connected with this lautertuns bottom, be used for when filtration treatment, making former water to flow into described lautertuns;
A plurality of drainage channels, corresponding with each described lautertuns and be provided with and be connected with this lautertuns bottom, be used for when back flush is handled washes discharged described lautertuns outside;
A plurality of draining valves, corresponding with each described drainage channel and be provided with, when described filtration treatment, be closed, described back flush is opened when handling;
When described back flush is handled, by opening described draining valve, utilize gravity to make to store the downward adverse current of described filtered water in the common storing section of described filtered water, make the described lautertuns can back flush,
It is characterized in that the aperture opening ratio of described net is identical on whole described lautertuns, and this aperture opening ratio is more than 0.5% below 10%.
2. the described filter of claim 1 is characterized in that,
Further possess former water supply unit, described former water supply unit is supplied to described lautertuns from former water supply position Jie that the hydraulic head surface with respect to described lautertuns exceeds specified altitude by described former water passage with described former water,
Described former water passage comprises:
Allow described former water to supply with the overflow of position when overflow part, described filtration treatment, and described back flush stop described former water when handling and supply with the overflow of position to this former water passage inside from described former water to this former water passage inside from described former water;
Pressure-regulating portion forms from the vertical downward extension of described overflow part, adjusts pressure in the described lautertuns according to the water level that flows into inner described former water;
Former water inlet is formed at the downstream of described pressure-regulating portion, injects described former water from described lautertuns bottom.
3. the described filter of claim 2 is characterized in that, the suction inlet of described drainage channel is the broadening formation shape to described lautertuns bottom surface opening.
4. the described filter of claim 3 is characterized in that, described draining valve is to make as the valve rod of the turning cylinder core shift valve with respect to valve body center core shift.
5. the described filter of claim 4 is characterized in that, the size of floating filter material that constitutes described floating filter material layer greater than 4mm smaller or equal to 20mm.
6. the described filter of claim 5 is characterized in that, the density of the described floating filter material when using preceding and/or use is greater than 0.4g/cm
3Smaller or equal to 0.8g/cm
3
7. the described filter of claim 6 is characterized in that,
Described drainage channel is split up into a plurality of arms with described suction inlet,
Overlook from described lautertuns, the former water inlet of described former water passage and the suction inlet of described drainage channel are disposed at the position that does not overlap mutually.
8. the described filter of claim 7 is characterized in that,
A plurality of described lautertuns and described former water supply unit are set up in parallel in prescribed direction, and this former water supply unit tank that to be its bottom surface supported by the domain,
A plurality of described former water passages with the direction of described prescribed direction orthogonal on be set up in parallel, and further have the horizontal pathways portion that extends horizontally to described former water inlet from described pressure-regulating portion lower end.
9. the described filter of claim 8 is characterized in that, the area of section of described horizontal pathways portion is more than 0.002 below 0.1 with respect to the ratio of lautertuns area.
10. the described filter of claim 9, it is characterized in that, the area of section of described horizontal pathways portion changes according to its path-length, makes the area of section of the short described horizontal pathways portion of this path-length little, makes the area of section of the long described horizontal pathways portion of this path-length big.
11. a water treatment system is characterized in that, possesses claim 1 to 10 each described filter and biological treating tank, described biological treating tank is arranged at the downstream of described filter, and the filtered water of being supplied with by this filter is carried out a biological disposal upon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200869396U CN202020948U (en) | 2011-03-25 | 2011-03-25 | Filtering device and water treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200869396U CN202020948U (en) | 2011-03-25 | 2011-03-25 | Filtering device and water treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202020948U true CN202020948U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200869396U Expired - Lifetime CN202020948U (en) | 2011-03-25 | 2011-03-25 | Filtering device and water treatment system |
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| CN (1) | CN202020948U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772930A (en) * | 2012-07-18 | 2012-11-14 | 烟台桑尼核星环保设备有限公司 | Reclaimed water fine micro-filtration device |
| JP2021094514A (en) * | 2019-12-16 | 2021-06-24 | メタウォーター株式会社 | Filtration device and cleaning method for filtration device |
-
2011
- 2011-03-25 CN CN2011200869396U patent/CN202020948U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102772930A (en) * | 2012-07-18 | 2012-11-14 | 烟台桑尼核星环保设备有限公司 | Reclaimed water fine micro-filtration device |
| CN102772930B (en) * | 2012-07-18 | 2015-03-04 | 烟台桑尼核星环保设备有限公司 | Reclaimed water fine micro-filtration device |
| JP2021094514A (en) * | 2019-12-16 | 2021-06-24 | メタウォーター株式会社 | Filtration device and cleaning method for filtration device |
| JP7420544B2 (en) | 2019-12-16 | 2024-01-23 | メタウォーター株式会社 | Filtration equipment and cleaning methods for filtration equipment |
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