CN204182294U - A kind of water treatment membrane separation plant - Google Patents
A kind of water treatment membrane separation plant Download PDFInfo
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- CN204182294U CN204182294U CN201420652785.6U CN201420652785U CN204182294U CN 204182294 U CN204182294 U CN 204182294U CN 201420652785 U CN201420652785 U CN 201420652785U CN 204182294 U CN204182294 U CN 204182294U
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Abstract
The utility model discloses a kind of water treatment membrane separation plant, comprising: there is lower end and the hollow fiber curtain type membrane component of hollow fiber membrane bundle, the base supporting lower end and the captation be connected with the product mouth of a river of hollow fiber curtain type membrane component; Hollow fiber membrane bundle vertically arranges, gap is had between adjacent two hollow fiber curtain type membrane components, arrange within the cleft and have the distribution device of qi-emitting hole, distribution device is connected with providing the aerator of air-flow, and qi-emitting hole is towards the root of hollow fiber membrane bundle near lower end.Distribution device is arranged between adjacent two hollow fiber curtain type membrane components, the aperture of qi-emitting hole is towards the root of hollow fiber membrane bundle, distance between aperture and film bundle root is shorter, and there is no obstacle therebetween, film silk root deposition phenomenon just effectively can be avoided with less aerate flux, improve the contamination resistance of membrane separation plant, and significantly improve the effective rate of utilization of membrane module and the stability of membrane separation plant water-yielding capacity.
Description
Technical field
The utility model relates to water-treatment technology field, in particular, relates to a kind of water treatment membrane separation plant.
Background technology
In recent years due to the development of membrane science and technology and the update of water technology, the membrane separation plant of membrane separation technique and employing membrane separation technique is applied to water treatment field more and more.
In the middle of several membrane component forms such as Flat Membrane, tubular membrane and hollow-fibre membrane, hollow-fibre membrane is because loading density is large, cost is low and be widely used.But existing hollow fiber film assembly equal ubiquity problem: hollow fiber film thread root deposition phenomenon is serious, and once form deposition to be not easy very much again removing, which decrease the effective area of membrane module filtration and the uniformity of filtration, the continuation of film silk root fouling membrane develops and spreads and can aggravate further the forfeiture of inhomogeneities and the effective filtration area filtered, the final service life shortening whole membrane module.
In the prior art, the measure utilizing the membrane separation plant of hollow fiber film assembly generally to take in suppression fouling membrane in the market arranges boring aeration pipe immediately below hollow fiber film assembly.As shown in Figure 1, in the below of the hollow fiber film thread 01 of hollow fiber film assembly and the lower end 02 of hollow fiber film assembly, boring aeration pipe 03 is set, high strength aeration gas flow is generally from gas outlet 04 air-flow out of boring aeration pipe 03, the inverted gas and water formed by high strength aeration carries out sluicing to hollow fiber membrane bundle, can reach the object of aeration on the one hand, can also wash away hollow fiber film thread 01 prevents the contaminated effect of film silk to reach on the other hand.Although this technology can eliminate the pollution in the middle part of hollow fiber membrane bundle that hollow fiber film thread 01 formed to a certain extent, the flow turbulence of hollow fiber membrane bundle root is still very poor, and the deposition phenomenon of hollow fiber film thread root is comparatively serious.Especially when hollow fiber membrane bundle is vertically placed, due to inverted gas and water in uphill process stop by the lower end 02 of hollow fiber membrane bundle, therefore, on the casting end face of hollow fiber film assembly lower end 02, deposition phenomenon is even more serious.Although increase the pollution that aeration rate can alleviate hollow fiber film thread 01 to a certain extent, this measure not only makes the operation energy consumption of membrane separation plant significantly increase, and hollow fiber film thread 01 root deposition phenomenon still can not get effective solution.If turn aeration rate down to save energy consumption, not only easily there is serious deposition phenomenon in hollow fiber film thread root, and the degree of irregularity of the inner aeration of membrane separation plant also easily strengthens, part hollow fiber film component is easily because there is serious fouling membrane not in aeration scouring intensity, thus the effective rate of utilization of membrane separation plant inner hollow fiber film component is reduced, and then reduce the actual water-yielding capacity of membrane separation plant on the whole, shorten the actual life of membrane separation plant.
For the prior art needing to understand, also can with reference to using the patent document that publication number is CN101254977, CN101234819, CN101288828, CN101250003, CN101254410.For the explanation of some technical terms, also can with reference to above-mentioned patent document.
Therefore, as how lower aeration rate, both effectively having eliminated hollow fiber film thread root deposition problem, and improved again the effective rate of utilization of membrane separation plant inner hollow fiber film component, is the key technical problem that those skilled in the art need to solve at present.
Utility model content
In view of this, the utility model provides a kind of water treatment membrane separation plant, effectively to eliminate hollow fiber film thread root deposition problem, and both significantly improve the effective rate of utilization of membrane separation plant inner hollow fiber film component and the space availability ratio of whole membrane separation plant, reduce the operation energy consumption of membrane separation plant.
For achieving the above object, the utility model provides following technical scheme:
A kind of water treatment membrane separation plant, comprise: the hollow fiber curtain type membrane component with lower end and hollow fiber membrane bundle, for the base that supports the lower surface of described lower end and the captation be connected with the product mouth of a river of described hollow fiber curtain type membrane component, wherein, described hollow fiber membrane bundle vertically arranges, gap is formed between adjacent two described hollow fiber curtain type membrane components, the distribution device with qi-emitting hole is provided with between described gap, described distribution device is connected with providing the aerator of air-flow, the qi-emitting hole aperture of described distribution device is towards the root of described hollow fiber membrane bundle near described lower end, clear distance between the lower end of adjacent two hollow fiber curtain type membrane components is greater than the Breadth Maximum on described distribution device cross section, and the height of the qi-emitting hole position of described distribution device is not less than the lower surface of described lower end.
Preferably, in above-mentioned water treatment membrane separation plant, described lower end is casting type lower end, and the distance between the aperture of the qi-emitting hole of described distribution device and the casting end face of described lower end is not more than 50mm.
Preferably, in above-mentioned water treatment membrane separation plant, the aperture of the qi-emitting hole of described distribution device is not more than 40mm to the distance of described hollow fiber membrane bundle root, is more preferably and is not more than 20mm.
Preferably, in above-mentioned water treatment membrane separation plant, the center distance between described adjacent two hollow fiber curtain type membrane components is not more than 80mm, is more preferably and is not more than 60mm.
Preferably, in above-mentioned water treatment membrane separation plant, the thickness of each described hollow fiber curtain type membrane component is all not more than 60mm, is more preferably and is not more than 40mm.
Preferably, in above-mentioned water treatment membrane separation plant, the clear distance between the lower end of described adjacent two hollow fiber curtain type membrane components is 5 ~ 60mm, is more preferably 10 ~ 40mm.
Preferably, in above-mentioned water treatment membrane separation plant, described distribution device is perforated pipe.
Preferably, in above-mentioned water treatment membrane separation plant, described perforated pipe comprises:
For being connected with described aerator, and be parallel to the horizontal tube of described lower end, described horizontal tube is higher than described lower end, and described qi-emitting hole is opened in the side of described horizontal tube near described hollow fiber curtain type membrane component.
Preferably, in above-mentioned water treatment membrane separation plant, described horizontal tube and described aerator are by being connected with the vertical VERTICAL TUBE be connected of described horizontal tube.
Preferably, in above-mentioned water treatment membrane separation plant, the both sides of described perforated pipe are provided with multiple described qi-emitting hole, and the described qi-emitting hole of described perforated pipe both sides is arranged about the axisymmetrical of described perforated pipe.
Preferably, in above-mentioned water treatment membrane separation plant, the size of the described qi-emitting hole on described perforated pipe is all identical, and for diameter be the circular hole of 1mm-8mm.
Preferably, in above-mentioned water treatment membrane separation plant, the orifice area of the described qi-emitting hole on described perforated pipe is reduced to end gradually by the centre of described perforated pipe.
Preferably, in above-mentioned water treatment membrane separation plant, the spacing between qi-emitting hole adjacent on described perforated pipe is not more than 100mm, is more preferably and is not more than 50mm.
Preferably, in above-mentioned water treatment membrane separation plant, the circular straighttube of described perforated pipe to be cross section be annular, and the external diameter of described perforated pipe is 5-50mm.
Preferably, in above-mentioned water treatment membrane separation plant, described perforated pipe is cross section is rectangular rectangle straight tube, and rectangular minor face is parallel to horizontal plane, and length is 5-50mm.
Preferably, in above-mentioned water treatment membrane separation plant, described hollow fiber curtain type membrane component and described distribution device all evenly distributed, and the center line of the lower end of the axis of described horizontal tube and adjacent two hollow fiber curtain type membrane components is equidistant.
Known via above-mentioned technical scheme, compared with prior art, the utility model discloses a kind of water treatment membrane separation plant, comprise: the hollow fiber curtain type membrane component with lower end and hollow fiber membrane bundle, for the base that supports the lower surface of lower end and the captation be connected with the product mouth of a river of hollow fiber curtain type membrane component, hollow fiber membrane bundle vertically arranges, gap is formed between adjacent two hollow fiber curtain type membrane components, the distribution device with qi-emitting hole is provided with between this gap, distribution device is connected with providing the aerator of air-flow, the qi-emitting hole of distribution device is towards the root of hollow fiber membrane bundle near lower end, and the height of the qi-emitting hole position of distribution device is not less than the lower surface of described lower end.Distribution device is arranged between adjacent two hollow fiber curtain type membrane components by the utility model, the axis of distribution device parallels with the axis of hollow fiber curtain type membrane component lower end, the qi-emitting hole of distribution device is evenly arranged along the long side direction of hollow fiber curtain type membrane component lower end, shorter distance is kept between the aperture of the qi-emitting hole of distribution device and the root of hollow fiber membrane bundle, and by the aperture of the qi-emitting hole of distribution device towards the root of hollow fiber membrane bundle near lower end.By above-mentioned setting, the utility model is compared with prior art desirable obtains following useful technique effect:
First, because the aperture of the qi-emitting hole of distribution device in the utility model is directly towards the root of hollow fiber membrane bundle near lower end, distance between aperture and film bundle root is shorter, and the height of qi-emitting hole position is not less than the lower surface of lower end, namely therebetween without any obstacle, even if like this with less aerate flux, also the air-flow diffused out from the qi-emitting hole of distribution device can be made to carry out high strength with higher flow velocity to hollow fiber film thread root wash away, significantly improve the flow turbulence of hollow fiber membrane bundle root, effectively prevent the generation of hollow fiber film thread root deposition phenomenon, the high velocity air diffused out from distribution device is completing after the washing away of hollow fiber membrane bundle root, continuation is upwards flowed, continue to wash away other positions of hollow fiber membrane bundle, thus effectively suppress the development of fouling membrane, significantly improve the contamination resistance of membrane separation plant.
Simultaneously, the utility model is equipped with distribution device in the gap between every two adjacent hollow fiber curtain type membrane components, make the inner each hollow fiber curtain type membrane component of membrane separation plant can obtain effective scouring of the air-flow diffused out from distribution device, significantly improve the uniformity that membrane separation plant internal gas is cleaned, thus significantly improve the effective rate of utilization of membrane separation plant inner hollow fiber curtain type film assembly, avoid prior art ubiquitous due to the uneven of the inner aeration of membrane separation plant and cause membrane module effective rate of utilization to reduce, and then reduce the actual water-yielding capacity of membrane separation plant and the problem shortening its actual life.
Secondly, along with to effective suppression of film silk root deposition phenomenon and the inner aeration uniformity of membrane separation plant, the significantly improving of membrane module effective rate of utilization, the utility model only needs lower aeration intensity just effectively can suppress the development of fouling membrane, maintain the stable of membrane separation plant water-yielding capacity, thus save the operation energy consumption of membrane separation plant.
In addition, in the membrane separation plant of the application, annexation or nest relation is not had between hollow fiber curtain type membrane component and distribution device, be separate parts each other, so both be convenient to hollow fiber curtain type membrane component and distribution device can mount and dismount in membrane separation plant inside independently of each other, facilitate assembling and the maintenance of whole membrane separation plant, and also simplify the internal structure of hollow fiber curtain type membrane component, facilitate the processing of hollow fiber curtain type membrane component.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of Fig. 1 water treatment membrane separation plant disclosed in prior art;
The front view of Fig. 2 water treatment membrane separation plant disclosed in the utility model embodiment;
The structural representation of Fig. 3 water treatment membrane separation plant disclosed in the utility model embodiment;
The partial structurtes schematic diagram of Fig. 4 water treatment membrane separation plant disclosed in the utility model embodiment;
The structural representation of Fig. 5 horizontal tube of water treatment membrane separation plant disclosed in the utility model embodiment;
The front view of Fig. 6 horizontal tube of water treatment membrane separation plant disclosed in the utility model embodiment;
The top view of Fig. 7 U-shaped perforated pipe of water treatment membrane separation plant disclosed in the utility model embodiment;
The front view of Fig. 8 U-shaped perforated pipe of water treatment membrane separation plant disclosed in the utility model embodiment;
The side view of Fig. 9 U-shaped perforated pipe of water treatment membrane separation plant disclosed in the utility model embodiment;
The structural representation of Figure 10 hollow fiber curtain type membrane component of water treatment membrane separation plant disclosed in the utility model embodiment.
The explanation of each mark in accompanying drawing:
01---hollow fiber film thread; 02---the lower end of membrane module; 03---boring aeration pipe; 04---the gas outlet of boring aeration pipe; 1---hollow fiber curtain type membrane component; 11---hollow fiber membrane bundle; 12---lower end; 2---base; 3---distribution device; 4---qi-emitting hole; The width of δ---hollow fiber curtain type membrane component; B---the center distance between adjacent hollow fiber curtain type film assembly; B---the clear distance between adjacent hollow fiber curtain type film assembly termination.
Detailed description of the invention
Core of the present utility model is to provide a kind of water treatment membrane separation plant, effectively to eliminate hollow fiber film thread root deposition problem, and both significantly improve the effective rate of utilization of membrane separation plant inner hollow fiber film component and the space availability ratio of whole membrane separation plant, reduce the operation energy consumption of membrane separation plant.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As seen in figs. 2-10, the utility model discloses a kind of water treatment membrane separation plant, comprise: the hollow fiber curtain type membrane component 1 with lower end 12 and hollow fiber membrane bundle 11 (hollow fiber membrane bundle is made up of multiple hollow fiber film thread), for the base 2 that supports the lower surface of above-mentioned lower end 12 and the captation be connected with the product mouth of a river of hollow fiber curtain type membrane component 1, wherein, this water treatment membrane separation plant also comprises: to be arranged between adjacent two hollow fiber curtain type membrane components 1 and to have the distribution device 3 of qi-emitting hole 4, and the height of qi-emitting hole 4 position of this distribution device 3 is not less than the lower surface of lower end 12, and (position of the position of qi-emitting hole 4 and the lower surface of lower end 12 is when normally placing based on this water treatment membrane separation plant, namely qi-emitting hole 4 concordant with the lower surface of lower end 12 or higher than lower surface), and the qi-emitting hole 4 of this distribution device 3 is towards one end near lower end 12 of hollow fiber membrane bundle 11, the aerator be connected with this distribution device 3.Particularly, water treatment membrane separation plant in the application comprises multiple hollow fiber curtain type membrane component 1 installed perpendicular to base 2, and the gap between adjacent hollow fiber curtain type membrane component 1 is not more than 80mm, preferably, be not more than 60mm, during normal placement, base 2 is parallel to horizontal plane, and corresponding hollow fiber membrane bundle 11 is vertically placed.In addition, in order to ensure the setting of distribution device 3, the clear distance between the lower end 12 of adjacent two hollow fiber curtain type membrane components 1 is greater than the Breadth Maximum of distribution device 3 cross section.
In the application, distribution device 3 is arranged between adjacent two hollow fiber curtain type membrane components 1, the axis of distribution device 3 parallels with the axis of the lower end 12 of hollow fiber curtain type membrane component 1, the qi-emitting hole 4 of distribution device 3 is evenly arranged along the long side direction of the lower end 12 of hollow fiber curtain type membrane component 1, the aperture of the qi-emitting hole 4 of distribution device 3 is directly towards the root of hollow fiber membrane bundle 11 near lower end 12, distance between aperture and film bundle root is shorter, and therebetween without any obstacle, even if like this with less aerate flux, also the air-flow diffused out from the qi-emitting hole 4 of distribution device 3 can be made to carry out high strength with higher flow velocity to hollow fiber film thread root wash away, significantly improve the flow turbulence of hollow fiber membrane bundle 11 root, effectively prevent the generation of hollow fiber film thread root deposition phenomenon, the high velocity air diffused out from distribution device 3 is completing after the washing away of hollow fiber membrane bundle 11 root, continuation is upwards flowed, continue to wash away other positions of hollow fiber membrane bundle 11, thus effectively suppress the development of fouling membrane, significantly improve the contamination resistance of membrane separation plant.In addition, the utility model is equipped with distribution device 3 in the gap between every two adjacent hollow fiber curtain type membrane components 1, make the inner each hollow fiber curtain type membrane component 1 of membrane separation plant can obtain effective scouring of the air-flow diffused out from distribution device 3, significantly improve the uniformity that membrane separation plant internal gas is cleaned, thus significantly improve the effective rate of utilization of membrane separation plant inner hollow fiber curtain type film assembly, avoid prior art ubiquitous due to the uneven of the inner aeration of membrane separation plant and cause membrane module effective rate of utilization to reduce, and then reduce the actual water-yielding capacity of membrane separation plant and the problem shortening its actual life.
Clear distance between the lower end 12 of above-mentioned adjacent two hollow fiber curtain type membrane components 1 is greater than the Breadth Maximum on distribution device 3 cross section, and alternatively, the clear distance between adjacent two distribution devices 3 is greater than the thickness of hollow fiber curtain type membrane component 1.Can guarantee that in the gap between the lower end 12 that distribution device 3 is arranged on hollow fiber curtain type membrane component 1, in other words, hollow fiber curtain type membrane component 1 can be arranged in the gap between distribution device 3 like this.As can be seen from Figure 2, by above-mentioned setting, first can realize all being provided with distribution device 3 in the gap between the inner all hollow fiber curtain type membrane components 1 of membrane separation plant, the uniformity of the inner gas distribution of whole membrane separation plant can be improved so to greatest extent, thus improve the actual effective rate of utilization of whole membrane separation plant internal membrane assembly, improve the stability of whole membrane separation plant water-yielding capacity.In addition, so also can guarantee that distribution device 3 and hollow fiber curtain type membrane component 1 are separate settings.What is called arranges distribution device 3 and hollow fiber curtain type membrane component 1 independently, alternatively distribution device 3 and hollow fiber curtain type membrane component 1 do not have annexation or nest relation, be separate parts each other, so both be convenient to hollow fiber curtain type membrane component 1 and distribution device 3 can mount and dismount in membrane separation plant inside independently of each other, facilitate assembling and the maintenance of whole membrane separation plant, and also simplify the internal structure of hollow fiber curtain type membrane component 1, facilitate the processing of hollow fiber curtain type membrane component 1.
The aperture of the qi-emitting hole 4 of distribution device 3 is towards there being level, obliquely and oblique inferior multiple choices.Can by the different setting positions of qi-emitting hole 4 on the cross section of distribution device 3 to the aperture of qi-emitting hole 4 towards designing, make from qi-emitting hole 4 airflow direction be out horizontal direction, sideling towards lower or sideling towards upper direction.When the casting end face with lower end 12 remains basically stable, the aperture of qi-emitting hole 4 can be made to be oriented horizontal direction, because hollow fiber membrane bundle 11 is vertically place, be the root being basically perpendicular to hollow fiber membrane bundle 11 from the direction of advance of qi-emitting hole 4 air-flow out like this, directly can purge the root of hollow fiber membrane bundle 11.When casting end face a little less than lower end 12 of the aperture height of qi-emitting hole 4, the aperture of qi-emitting hole 4 can be made to be oriented diagonal upward direction, like this from the direction of advance of qi-emitting hole 4 air-flow be out sideling upwards towards the root of hollow fiber membrane bundle 11.When casting end face a little more than lower end 12 of the aperture height of qi-emitting hole 4, the aperture of qi-emitting hole 4 can be made to be oriented direction obliquely, be the root of downwardly hollow fiber membrane bundle 11 sideling like this from the direction of advance of qi-emitting hole 4 air-flow out.Visible, the aperture height of qi-emitting hole 4 can remain basically stable with the casting end face of lower end 12, also can a little less than or a little more than the casting end face of lower end 12, the aperture of qi-emitting hole 4 is towards the adjustment can carrying out correspondence along with qi-emitting hole 4 and the change of the position relationship of the casting end face of lower end 12, and guarantee, from the direction of advance of qi-emitting hole 4 air-flow out all the time towards the root of hollow fiber membrane bundle 11 near lower end 12, so just effectively to avoid the generation of film silk root deposition phenomenon.
Purge effect to obtain better film silk root with lower aerate flux, the distance between the aperture of qi-emitting hole 4 and hollow fiber membrane bundle 11 root should be shortened as far as possible.As previously mentioned, the aperture height of qi-emitting hole 4 can equal the casting end face of lower end 12, also can a little less than or a little more than the casting end face of lower end 12, as preferably, difference in height between the aperture of qi-emitting hole 4 and the casting end face of lower end 12 is not more than 50mm, is more preferably and is not more than 30mm.As preferably, the aperture of qi-emitting hole 4 is not more than 40mm to the distance of hollow fiber membrane bundle 11 root, is more preferably and is not more than 20mm, most preferably be below 10mm more than 3mm.If this is apart from excessive, so from qi-emitting hole 4 air-flow out when arrival hollow fiber membrane bundle 11 root, flow velocity is lower, can not effectively wash away hollow fiber membrane bundle 11 root.If this is apart from too small, liquid so to be filtered is from the process upwards flowed in the bottom of the lower end 12 of hollow fiber film assembly 1, the runner (i.e. gap between the lower end 12 of distribution device 3 and hollow fiber film assembly 1) flowing through distribution device 3 place will be too narrow and small, increase the resistance of current, if when there is more solid content in liquid to be filtered, be easy to the phenomenon occurring blocking runner.The aperture of qi-emitting hole 4 refers to the distance of hollow fiber membrane bundle 11 root herein, when hollow fiber membrane bundle 11 is in vertical state, from the aperture of qi-emitting hole 4 to from the distance the shortest hollow fiber film thread of this qi-emitting hole 4 vertical range.
For the thickness of the center distance between the center distance between adjacent hollow fiber curtain type film assembly 1, adjacent distribution device 3, single hollow fiber curtain type membrane component 1, adjacent hollow fiber curtain type film assembly 1 lower end 12 between clear distance, Breadth Maximum on distribution device 3 cross section be several comparatively relevant data.Wherein, the center distance between adjacent hollow fiber curtain type film assembly 1 refers to the distance between the center line of adjacent two hollow fiber film assemblies 1, the size that namely in Fig. 2, " B " marks; Clear distance between the lower end 12 of adjacent hollow fiber curtain type film assembly 1 refers to the distance between two adjacent side of the lower end 12 of adjacent two hollow fiber curtain type membrane components 1, the size that namely in Fig. 2, " b " marks; Distance between adjacent distribution device 3 refers to the distance between the center line of adjacent two distribution devices 3; The thickness of single hollow fiber curtain type membrane component 1 refers to the thickness of the lower end 12 of single hollow fiber curtain type membrane component 1, the size that namely in Figure 10, " δ " marks.As preferably, above-mentioned hollow fiber curtain type membrane component 1 and distribution device 3 are all taked evenly distributed, and the center line of the axis of distribution device 3 or the axis of its horizontal segment hollow fiber curtain type membrane component 1 adjacent with two, left and right is equidistant.Now, the center distance between adjacent hollow fiber curtain type film assembly 1 equals the center distance between adjacent distribution device 3.
In the membrane separation plant of existing employing hollow fiber curtain type membrane component 1, the center distance between hollow fiber curtain type membrane component 1 arranges and is in awkward selection.Although reduce loading density and space availability ratio that center distance can improve membrane separation plant, and reduce the manufacturing cost of membrane separation plant, but the below of the lower end 12 of hollow fiber curtain type membrane component 1 is arranged on due to distribution device 3, reducing center distance then makes lower end 12 pairs of aeration gas flows form larger resistance, needs aeration intensity to be increased to 150m
3/ (m
2h) (cubic meter every square metre is per hour) left and right just can overcome this resistance to form strong washing away to hollow fiber membrane bundle, so then increase the operation energy consumption of membrane separation plant, therefore, this center distance is set to 80 ~ 110mm by major part membrane separation plant usually, and required aeration intensity then should lower than 100m
3/ (m
2h), usually 100 ~ 150m is maintained
3/ (m
2h), otherwise the water-yielding capacity of membrane separation plant the fast development due to fouling membrane is significantly declined.This center distance is contracted to 44 ~ 80mm by small part membrane separation plant, to improve loading density and the space availability ratio of membrane separation plant, and reduce the manufacturing cost of membrane separation plant, meanwhile, suitably reduce the thickness δ of lower end 12, suitably increase the clear distance b between lower end, to alleviate the barrier effect of lower end to aeration gas flow, and maintain enough loading densities, but in order to effectively suppress the development of fouling membrane, required aeration intensity is then up to 150m
3/ (m
2h) left and right, the operation energy consumption then corresponding raising of membrane separation plant.Aeration intensity refers to herein, when membrane separation plant works, in the projected area of the inner all hollow fiber curtain type membrane components 1 of membrane separation plant, the aeration rate (cubic meter) in unit are (every square metre), in the unit interval (per hour).
The utility model is owing to adjusting the relative position of distribution device 3 with the lower end 12 of hollow fiber curtain type membrane component 1, particularly, the qi-emitting hole 4 position height of distribution device 3 is set to the lower surface being not less than lower end 12, parallel with the lower surface of lower end 12 or higher than lower surface by qi-emitting hole 4, with the root making the air-flow diffused out from the qi-emitting hole 4 of distribution device 3 directly can wash away hollow fiber membrane bundle 11 with higher flow velocity, thus effectively prevent the generation of film silk root deposition phenomenon, simultaneously, the utility model is by arranging distribution device 3 in the gap between adjacent two hollow fiber curtain type membrane components 1, significantly improve the inner uniformity of aeration of membrane separation plant and the effective rate of utilization of hollow fiber curtain type membrane component 1, thus following two targets can be realized simultaneously: the center distance between adjacent hollow fiber curtain type film assembly 1 controls at below 80mm by (1), be more preferably below 60mm, to improve loading density and the space availability ratio of membrane separation plant, and reduce the manufacturing cost of membrane separation plant, (2) aeration intensity required for membrane separation plant is controlled at 100m
3/ (m
2h) below, just effectively can suppress the development of fouling membrane, maintain the stable of membrane separation plant water-yielding capacity, thus reduce the operation energy consumption of membrane separation plant.
When center distance between adjacent hollow fiber curtain type film assembly 1 controls at below 80mm, in order to provide installing space to distribution device and for liquid carrying to be filtered is for enough flow channels, the clear distance between the thickness of hollow fiber curtain type membrane component 1 and lower end 12 also should do corresponding rational regulation.The thickness of each described hollow fiber curtain type membrane component 1 of the utility model is below 60mm, is preferably below 50mm; Clear distance between the lower end 12 of adjacent two hollow fiber curtain type membrane components 1 is 5 ~ 60mm, is preferably 10 ~ 40mm.
In specific embodiment, above-mentioned distribution device 3 is perforated pipe, and during work, the gas that aerator provides arrives diverse location by the qi-emitting hole 4 on perforated pipe.Concrete structure for distribution device 3 can be the many perforated pipes with the hard of through hole and is formed by connecting.Adopt the structure that distribution device 3 and hollow fiber curtain type membrane component 1 are relatively independent in the application, do not need distribution device 3 and hollow fiber film assembly 1 to mount and dismount, therefore, be convenient to clean various piece, and simplify the structure.
Disclosed in the application, perforated pipe comprises: for being connected with aerator and being parallel to the horizontal tube 31 of lower end 12, and this horizontal tube 31 is higher than lower end 12, namely horizontal tube 31 is positioned at the side of lower end 12 away from base 2, when the height of relative position herein is normally placed based on this water treatment membrane separation plant.Particularly, above-mentioned qi-emitting hole 4 is opened in the side of horizontal tube 31 near hollow fiber curtain type membrane component 1.Because distribution device 3 is arranged between adjacent hollow fiber curtain type membrane component 1, therefore, the both sides of perforated pipe all have qi-emitting hole 4, to wash away the hollow fiber curtain type membrane component 1 of correspondence.Be set to straight horizontal tube 31 structure simple, be easy to processing.
In one embodiment, can reference diagram 5 and Fig. 6.Described perforated pipe is the horizontal tube 31 in " one " font, and many perforated pipes are arranged in parallel, defines a lot of gaps, be used for arranging hollow fiber curtain type membrane component 1 in gap between perforated pipe and perforated pipe.For the base 2 of support hollow fiber curtain type film assembly 1 lower end 12 with aerator in conjunction with as a whole, the axis being parallel of perforated pipe is in horizontal plane, and higher than base 2, in the both sides of perforated pipe, there is multiple qi-emitting hole 4, the direction of this gas outlet can be horizontal direction and towards the root of hollow fiber film thread, also can be sideling upwards and towards the root of hollow fiber film thread, also can be sideling downwards and towards the root of hollow fiber film thread.
In another embodiment, can reference diagram 7, Fig. 8, Fig. 9.This horizontal tube 31 is connected by VERTICAL TUBE 32 with between aerator, and this VERTICAL TUBE 32 is connected with horizontal tube 31 is vertical, to make this perforated pipe be inverted U, is arranged side by side at the top of aerator by the mode of median rise.Between perforated pipe and perforated pipe, define a lot of gaps, be used in gap arranging hollow fiber curtain type membrane component 1.Adopt the perforated pipe of inverted U aerator can be arranged on below, to rationalize the volume of whole membrane separation plant, avoid the volume that takies in horizontal plane larger.
As preferred membrane separation plant, the side that the hollow fiber curtain type membrane component 1 of perforated pipe wherein and the left and right sides is adjacent is all provided with qi-emitting hole 4; Further, the quantity of the qi-emitting hole 4 of this perforated pipe left and right sides is all equal and shape is all identical, and arrangement and opening direction are all symmetrical about perforated pipe central axis, and namely the qi-emitting hole 4 of perforated pipe both sides is arranged about the axisymmetrical of perforated pipe.Both the way of each perforated pipe can have been made all to be consistent by above-mentioned setting, be conducive to the processing of perforated pipe, turn improve the uniformity of the inner aeration of whole membrane separation plant.
The shape of the qi-emitting hole 4 on perforated pipe can be the hole of circular port, square opening, ellipse hole and other regular shapes or erose hole.When the qi-emitting hole 4 on perforated pipe is circular port, the diameter of qi-emitting hole 4 is 1 ~ 8mm, is preferably 2 ~ 5mm.The size of the qi-emitting hole 4 of perforated pipe both sides can be all identical each other, also can be successively decreased gradually by the two ends, left and right of the middle part of perforated pipe to perforated pipe, the reason of such setting makes the size of qi-emitting hole 4 be from upstream to downstream along the direction of airflow passes to become large gradually, the resistance distribution of air-flow when arriving each qi-emitting hole 4 can be made comparatively even, thus the flow that can realize the air-flow flowed out from each qi-emitting hole 4 is comparatively close, reach the object improving the inner uniform air distribution of whole membrane separation plant.
Qi-emitting hole 4 on perforated pipe can equidistantly distribute, also can unequal-interval distribution.In order to realize as far as possible to tip shapes be strip hollow fiber curtain type membrane component 1 in the even purging of hollow fiber membrane bundle 11 root, as preferably, qi-emitting hole 4 on perforated pipe is uniformly distributed, and the spacing between adjacent qi-emitting hole 4 is not more than 100mm, is more preferably and is not more than 50mm.
Above-mentioned disclosed perforated pipe can adopt round tube, also can adopt rectangle pipe.Round tube is referred to that cross section is the round tube of annular, the metal tube etc. that the hollow plastic tube of such as cylindrical, cylindrical are hollow.And when this perforated pipe is round tube, the external diameter of perforated pipe is set as 5mm ~ 50mm, be more preferably 10mm ~ 30mm.Above-mentioned rectangle pipe refers to that cross section is rectangular rectangular tube, the metal tube etc. that the plastic tube that such as the prism bodily form is hollow, the prism bodily form are hollow.Particularly, the ratio of the long limit of rectangle pipe and minor face can be set as more than 1.1, be preferably more than 1.2, be more preferably more than 1.3, more preferably more than 1.4 or more than 1.5 or more than 1.6 or more than 1.7 or more than 1.8 or more than 1.9 or more than 2.0 or more than 2.5 or more than 3.0.And the long limit of rectangle pipe and the ratio of minor face are set as less than 5.0, be preferably less than 4.5, be more preferably less than 4.0.When selected perforated pipe is rectangle pipe, preferably, by lateral vertical longer for length in horizontal plane, the minor face by rectangular surfaces is parallel to lower end 12, as shown in Figure 4.Wherein, the longer side L1 of length is perpendicular to horizontal plane, arranging like this can maintaining that perforated pipe cross-sectional area is constant, under the prerequisite that do not increase gas-flow resistance, reduce the gap length between adjacent two hollow fiber curtain type membrane components 1 as far as possible, the space availability ratio of membrane separation plant can be improved further, thus the membrane separation plant that in unit volume, water treatment capacity is larger can be produced.In addition, above-mentioned setting also can shorten the distance between the qi-emitting hole 4 of perforated pipe and hollow fiber curtain type membrane component 1, effectively can utilize the power of the gas coming from qi-emitting hole 4, thus the contamination resistance of hollow fiber film thread root can be improved, and when lower aeration rate, also can reach good fouling membrane inhibition, and then the operation energy consumption of membrane separation plant can be reduced.Preferably, the length of the minor face that the length of this rectangular tube is shorter is 5 ~ 50mm; Be more preferably 10 ~ 30mm.
The hollow fiber membrane bundle 11 that hollow fiber curtain type membrane component 1 disclosed in the application can comprise two terminations and be formed by many hollow fiber film threads, hollow fiber film thread is by resin-cast and be fixed on termination, in actual use, casting end face not necessarily plane completely, perhaps have uneven, but, as long as this casting end face can fix hollow fiber film thread.Wherein, base 2 is for supporting lower end 12, due between the base 2 in the application and the lower end 12 of hollow fiber curtain type membrane component 1 without any annexation, this base 2 only plays the effect of support or support hollow fiber curtain type film assembly 1, hollow fiber curtain type membrane component 1 can be made like this can to extract freely from the gap between perforated pipe, facilitate membrane module 1 in the installation and removal of membrane separation plant inside.
In the above-described embodiment, also there is in water treatment membrane separation plant the captation be connected with the product mouth of a river of each hollow fiber curtain type membrane component 1, captation is for collecting the membrane filtration product water collecting and come from each hollow fiber curtain type membrane component 1, and this captation is connected with total delivery port of this membrane separation plant.If total delivery port of water treatment membrane separation plant is connected with product water pump by pipeline, so membrane filtration product water will flow out via captation and total delivery port, thus reach the object adopting membrane separation plant to carry out water treatment.
Can be found out by the above-mentioned description to technical solutions of the utility model, the utility model compared with prior art, has following useful effect:
First, improve the antifouling property of hollow fiber film assembly 1, especially the antifouling property of hollow fiber membrane bundle 11 root, extends the service life of hollow fiber film assembly 1.The gap of lower end between distribution device 3 of hollow fiber film assembly 1, the aperture of the qi-emitting hole 4 of distribution device 3 is towards hollow fiber membrane bundle root, and the distance of contiguous hollow fiber membrane bundle 11 root of the orifice distance of qi-emitting hole 4 is very near, make the root directly washing away hollow fiber membrane bundle 11 from qi-emitting hole 4 air-flow out with higher intensity like this, therefore the problem of the easy deposition of existing membrane separation plant ubiquitous film silk root is well avoided, remain the effective area of hollow fiber film assembly 1 internal membrane silk filtration and the uniformity of filtration in water treatment procedure, can effectively prevent because of film silk root fouling membrane fast development and spread and shorten service life of whole bundle film silk.
And, the utility model is equipped with distribution device 3 in the gap between every two adjacent hollow fiber curtain type membrane components 1, make the inner each hollow fiber curtain type membrane component 1 of membrane separation plant can obtain effective scouring of the air-flow diffused out from distribution device 3, make the inner gas distribution of membrane separation plant more even, this avoid the ubiquitous membrane separation plant interior section hollow fiber film assembly 1 that causes because gas distribution is uneven of existing membrane separation plant and cannot obtain washing away of gas or the scouring intensity problem of fouling membrane fast development not, remain the whole effective area of membrane separation plant inner hollow fiber film component 1 filtration and the uniformity of filtration in water treatment procedure, improve the actual effective rate of utilization of whole membrane separation plant inner hollow fiber film component 1, improve the stability of whole membrane separation plant water-yielding capacity.
Secondly, along with to effective suppression of film silk root deposition phenomenon and the inner aeration uniformity of membrane separation plant, the significantly improving of membrane module effective rate of utilization, the utility model only needs lower aeration intensity just effectively can suppress the development of fouling membrane, maintain the stable of membrane separation plant water-yielding capacity, thus save the operation energy consumption of membrane separation plant.
In addition, the membrane separation plant that the utility model provides is inner, hollow fiber film assembly 1 characteristics of compact layout, distribution device 3 and aerator, membrane support combines together, hollow fiber film assembly 1 and distribution device 3, aerator and membrane support are linked together by dismountable mode, the gap of lower end between distribution device 3 of hollow fiber film assembly 1, such distribution device 3 both ensure that the evenly distributed of hollow fiber curtain type membrane component 1, and make the structure of hollow fiber curtain type membrane component 1 self comparatively simple, facilitate the processing of hollow fiber curtain type membrane component 1.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (16)
1. a water treatment membrane separation plant, comprise: the hollow fiber curtain type membrane component (1) with lower end (12) and hollow fiber membrane bundle (11), for the base (2) that supports the lower surface of described lower end (12) and the captation be connected with the product mouth of a river of described hollow fiber curtain type membrane component (1), it is characterized in that, described hollow fiber membrane bundle (11) vertically arranges, between adjacent two described hollow fiber curtain type membrane components (1), there is gap, the distribution device (3) with qi-emitting hole (4) is provided with in described gap, described distribution device (3) is connected with providing the aerator of air-flow, qi-emitting hole (4) aperture of described distribution device (3) is towards the root of described hollow fiber membrane bundle (11) near described lower end (12), clear distance between the lower end (12) of adjacent two described hollow fiber curtain type membrane components (1) is greater than the Breadth Maximum on described distribution device (3) cross section, the height of qi-emitting hole (4) position of described distribution device (3) is not less than the lower surface of described lower end (12).
2. water treatment membrane separation plant according to claim 1, it is characterized in that, described lower end (12) is casting type lower end, and the distance between the aperture of the qi-emitting hole (4) of described distribution device (3) and the casting end face of described lower end (12) is not more than 50mm.
3. water treatment membrane separation plant according to claim 1, is characterized in that, the aperture of the qi-emitting hole (4) of described distribution device (3) is not more than 40mm to the distance of described hollow fiber membrane bundle (11) root.
4. water treatment membrane separation plant according to claim 1, is characterized in that, the center distance between adjacent two described hollow fiber curtain type membrane components (1) is not more than 80mm.
5. water treatment membrane separation plant according to claim 1, is characterized in that, the thickness of each described hollow fiber curtain type membrane component (1) is all not more than 60mm.
6. water treatment membrane separation plant according to claim 1, is characterized in that, the clear distance between the lower end (12) of adjacent two described hollow fiber curtain type membrane components (1) is 5 ~ 60mm.
7. water treatment membrane separation plant according to claim 1, is characterized in that, described distribution device (3) is perforated pipe.
8. water treatment membrane separation plant according to claim 7, is characterized in that, described perforated pipe comprises:
For being connected with described aerator, and be parallel to the horizontal tube (31) of described lower end (12), described horizontal tube (31) is higher than described lower end (12), and described qi-emitting hole (4) is opened in the side of described horizontal tube (31) near described hollow fiber curtain type membrane component (1).
9. water treatment membrane separation plant according to claim 8, is characterized in that, described horizontal tube (31) and described aerator are by being connected with the vertical VERTICAL TUBE (32) be connected of described horizontal tube (31).
10. water treatment membrane separation plant according to claim 7, it is characterized in that, the both sides of described perforated pipe are provided with multiple described qi-emitting hole (4), and the described qi-emitting hole (4) of described perforated pipe both sides is arranged about the axisymmetrical of described perforated pipe.
11. water treatment membrane separation plants according to claim 7, is characterized in that, the size of the described qi-emitting hole (4) on described perforated pipe is all identical, and for diameter be the circular hole of 1mm-8mm.
12. water treatment membrane separation plants according to claim 7, is characterized in that, the orifice area of the described qi-emitting hole (4) on described perforated pipe is reduced to end gradually by the centre of described perforated pipe.
13. water treatment membrane separation plants according to claim 7, is characterized in that, the spacing between qi-emitting hole (4) adjacent on described perforated pipe is not more than 100mm.
14. water treatment membrane separation plants according to claim 7, is characterized in that, the circular straighttube of described perforated pipe to be cross section be annular, and the external diameter of described perforated pipe is 5-50mm.
15. water treatment membrane separation plants according to claim 7, is characterized in that, described perforated pipe is cross section is rectangular rectangle straight tube, and rectangular minor face is parallel to horizontal plane, and length is 5-50mm.
16. water treatment membrane separation plants according to claims 14 or 15, it is characterized in that, described hollow fiber curtain type membrane component (1) and described distribution device (3) all evenly distributed, and the center line of the lower end (12) of the axis of described horizontal tube (31) and adjacent two described hollow fiber curtain type membrane components (1) is equidistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420652785.6U CN204182294U (en) | 2014-11-04 | 2014-11-04 | A kind of water treatment membrane separation plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420652785.6U CN204182294U (en) | 2014-11-04 | 2014-11-04 | A kind of water treatment membrane separation plant |
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| CN204182294U true CN204182294U (en) | 2015-03-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437092A (en) * | 2014-11-04 | 2015-03-25 | 北京汉青天朗水处理科技有限公司 | Membrane separation device for water treatment |
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2014
- 2014-11-04 CN CN201420652785.6U patent/CN204182294U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437092A (en) * | 2014-11-04 | 2015-03-25 | 北京汉青天朗水处理科技有限公司 | Membrane separation device for water treatment |
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