CN207546236U - A kind of sewage-treatment plant for improving membrane filtration system performance - Google Patents

A kind of sewage-treatment plant for improving membrane filtration system performance Download PDF

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Publication number
CN207546236U
CN207546236U CN201721564875.XU CN201721564875U CN207546236U CN 207546236 U CN207546236 U CN 207546236U CN 201721564875 U CN201721564875 U CN 201721564875U CN 207546236 U CN207546236 U CN 207546236U
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China
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membrane
water
backwash
pressure
pressure vessel
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李铁梅
宋跃飞
秦文博
户启华
张小转
樊静
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Henan Normal University
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Henan Normal University
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Abstract

The utility model discloses a kind of sewage-treatment plants for improving membrane filtration system performance, belong to waste water treatment process and engineering device technique field.Series connection at least contains two distinct types of filter element in the single pressure vessel that the utility model uses(Pre-process micro-filtration(MF)Or ultrafiltration(UF)The nanofiltration of+membrane filtration(NF)It is or reverse osmosis(RO)), required pressure vessel serial or parallel connection together, by the utility model technology can make MF/UF membrane components regenerate, reduce filtration system area occupied, mitigate fouling membrane, increase economic efficiency.

Description

A kind of sewage-treatment plant for improving membrane filtration system performance
Technical field
The utility model belongs to waste water treatment process and engineering device technique field, and in particular to a kind of raising membrane filtration system The sewage-treatment plant of energy.
Background technology
China is a serious country of drought and water shortage, while body of groundwater is subject to the dirt of a degree of dotted and planar Dye, and have the tendency that aggravating year by year.The water pollution deteriorated further not only reduces the use function of water body, is further exacerbated by The contradiction of shortage of water resources has also threatened the safe drinking water and health of people.Therefore, some including membrane technology Novel alarm filter technology, also increasingly shows their importance in daily life.Membrane technology is as new separation technology Gas separation, feed separation and water treatment field are widely used to, wherein with water treatment field to the application demand of film product It is especially prominent.But in embrane method wastewater treatment process, due to water inlet feed liquid in fume film surface deposit or fenestra Interior absorption causes membrane aperture to become smaller or block so that membrane separating property is gradually reduced, and fouling membrane phenomenon is difficult to avoid that and further tight Weight.Fouling membrane can be by using the membrane material of stain resistance, feeding liquid pretreatment and optimization of system config and operating condition etc. Method is eliminated or is reduced.It is but big etc. with weight there are taking up a large area for conventional pretreatment technology such as multistage filter bed Shortcoming limits application of these conventional preconditioning techniques in confined space test site.In addition, the production of conventional pretreatment technology Water quality fluctuation is larger, easily causes the serious irreversible membrane fouling of film surface in subsequent separation process.
MF films and UF films can retain suspended matter, bacterium, fractionated viral and large-sized colloid in water inlet feed liquid etc. Potential pollutant, RO films can stop all dissolubility inorganic ions and molecular weight is more than the organic matter of 100 dalton, but Hydrone is allowed to penetrate.NF films are called the RO films of " loose type ", and the molecular dimension size that can be retained is about l nm, for inorganic salts Separation there are road south effect, its removal rate to monovalention is caused to be less than multivalent anions.Suitable embrane method is selected to locate in advance Reason and Membrane cleaning technology can improve the service efficiency of follow-up membrane component, decelerating membrane pollution.MF films and UF films are frequently used for NF films With the pre-treatment step of RO films, have many advantages, such as that energy saving, floor space is small and easy to operation.In addition, backwash can be effectively Mitigate fouling membrane, and secondary pollution will not be caused to film, be most economical Membrane cleaning technology.Publication No. CN The patent of 201033756A discloses a kind of sewage treatment equipment using processes such as water treating pond, sedimentation basin, softening neutralization ponds, The utility model cheap and simple, water fully recovering after processing, sludge is used as filler and fertilizer, but there are separative efficiencies for the technology The problems such as low, filter effect is bad, and hold facility area is too big.The patent of Publication No. CN 102961967A discloses one kind The film filter of the sintered porous film filtering element of multiple plates is built-in with, the filter area of the filter device significantly increases, mistake Raising with obvious effects is filtered, floor space is small, but cleans difficulty in the device running experiment after fouling membrane, if be tightly connected out Existing problem, then seriously affect filter effect.The utility model uses be built at least two different types of membrane components for the first time In same pressure vessel and arranged in series, the pressure vessel include one and are used to provide water inlet feed liquid for different type membrane component Water inlet;At least one production water out for being used to provide production aquaporin for different type membrane component;It is at least one to be used for as difference Type membrane component provides the concentrated water outlet of concentrated water channel.One kind in different types of membrane component is MF films or UF films, another For RO films or NF films.The utility model can reduce the floor space of wastewater treatment equipment, and multiple required pressure vessels It is connected in parallel, improves water treatment efficiency, while MF films or UF membrane components are regenerated by online backwashing, extend membrane component Service life, reduce financial cost.Relevant literature search is less than the content in relation to this patent.
Invention content
The purpose of this utility model is that solving that existing filtration system takes up a large area, fouling membrane is serious, filter efficiency is low And the problem of waste water resource and provide it is a kind of improve membrane filtration system performance sewage-treatment plant, effectively reduce waste water The financial cost of processing.Using at least two distinct types of membrane component of connecting in pressure vessel, and by required pressure vessel It arranges in parallel or series, so as to effectively improve the filter efficiency of membrane filtration system, and meanwhile it is intermittent based on differential pressure pickup realization Online backwashing pollutes so as to mitigate MF/UF membrane components and makes its regeneration.This flexible process design can permit according to filtration system Perhaps the specific setting of production water quality requirement.
The utility model adopts the following technical scheme that achieve the above object, a kind of sewage for improving membrane filtration system performance Processing unit, it is characterised in that including multiple parallel with one another or/and series connection pressure vessel, be equipped in each pressure vessel to Few two different types of membrane components and the different types of membrane component arranged in series, the type in different types of membrane component Type is MF/UF membrane components, and another type is RO/NF membrane components, sets that there are one be used for as different types of film on pressure vessel Element provides the water inlet of intake tunnel, at least one production water for being used to provide production aquaporin for different types of membrane component goes out Mouthful, it is at least one be used for for different types of membrane component provide concentrated water channel concentrated water outlet and it is at least one be used for be MF/UF Membrane component provides the backwash water inlet of backwash water inlet;Water inlet is connect by pipeline and directional control valve with water inlet manifold, Water inlet manifold upper edge water inlet direction is equipped with flow of inlet water control valve, flow of inlet water sensor, regulating valve and intake pressure successively Sensor;Production water out is connect by pipeline with outfall sewer, and outfall sewer is connected with production pond, outfall sewer upper edge water outlet Direction is equipped with discharge pressure sensor, regulating valve and production water flow sensor successively;Concentrated water outlet by pipeline and regulating valve with The water inlet connection of second segment RO/NF membrane modules, the production water out of second segment RO/NF membrane modules are connected by pipeline and outfall sewer It connects, the concentrated water outlet of second segment RO/NF membrane modules is connected by pipeline and concentrated water flow control valve with concentrated water pond;Backwash water inlet Mouth is connect by pipeline and regulating valve with Backwash pipeline, and the inlet of Backwash pipeline is connected with backwash intake pool, orients The bypass liquid outlet of control valve is connect with Backwash pipeline, between backwash water inlet branch and directional control valve connection branch Backwash pipeline upper edge backwash water inlet direction is equipped with regulating valve and pressure measurement branch successively, and the other end of pressure measurement branch and water inlet are total Pipe connects, and pressure measurement branch road, which is equipped with, backwashes across MF/UF membrane pressure gap sensor component, the liquid outlet of Backwash pipeline and recoil It washes out pond to be connected, the Backwash pipeline upper edge backwash water outlet direction of neighbouring backwash discharge bay is equipped with backwash flow successively Sensor and backwash flow control valve.
Further preferably, in the pressure vessel different types of membrane component use close contact arrangement mode, for having Effect prevents from leaking between membrane component or around membrane component, and pressure vessel both ends set seal assembly respectively, for preventing from pressing Force container aqueous mouth, production water out and concentrated water outlet leak.
Further preferably, the membrane component surface carries negative electrical charge.
Further preferably, the pressure vessel is hollow funnel-form configuration or Hollow dumb-bell shape configuration, for promoting to intake The flowing and separation of fluid, the material of pressure vessel is plastics, fiberglass or alloy material, and the length of pressure vessel is 1-16m.
Further preferably, the MF/UF membrane components of series connection and NF/RO membrane components, three pressure are equipped in the pressure vessel Container is parallel with one another, and for improving membrane filtration efficiency, water inlet feed liquid is pre-processed by the MF/UF membrane components of pressure vessel, For removing particulate matter and suspended solid in feed liquid of intaking, pretreated production water is directly entered what is connected in pressure vessel NF/RO membrane components, for effectively removing into the contaminated ion in water feed liquid, treated, and the production water containing low-solubility salt passes through Water out discharge is produced, after the concentrated water mixing after NF/RO membrane components treated the concentrated water containing high salt concentration and MF/UF film process Discharge is exported from the concentrated water of pressure vessel.
The operation method of the sewage-treatment plant described in the utility model for improving membrane filtration system performance, it is characterised in that Detailed process is:Feed liquid of intaking is by water inlet manifold through flow of inlet water control valve and directional control valve by the water inlet of pressure vessel Into pressure vessel, water inlet feed liquid is in pressure vessel successively after MF/UF membrane components and the filtering of NF/RO membrane components by pressure Container produces water out and is discharged into production pond by outfall sewer, and the concentrated water of MF/UF films and NF/RO films is held by pressure in pressure vessel The outlet of device concentrated water enters second segment NF/RO membrane modules by pipeline, and the production water after the filtering of second segment NF/RO membrane modules is by going out Supply mains enters production pond, and the concentrated water after the filtering of second segment NF/RO membrane modules enters concentrated water pond by concentrated water pipeline;Work as recoil Wash across MF/UF membrane pressure gap sensor component measure MF/UF membrane components both sides pressure difference be more than setting pressure value when, alternately stop It runs the pressure vessel of multiple parallel connections and starts backwash process, backwash water inlet passes through the backwash water inlet on pressure vessel Into pressure vessel, backwash water inlet is located in pressure vessel between MF/UF membrane components and NF/RO membrane components, to MF/UF films Backwash water outlet after element backwash enters recoil by the oriented control valve of Backwash pipeline and backwash flow control valve Pond is washed out, alternately the MF/UF membrane components in multiple pressure vessels are backwashed to complete to MF/UF membrane components successively Online backwashing link.
Further preferably, SO in the water inlet feed liquid4 2-A concentration of 500-2800mg/L and total dissolved solidss salt content it is dense It spends for 1000-45000mg/L, passes through SO in the production water after filter element4 2-Concentration≤50mg/L and total dissolved solidss saliferous Concentration≤1000mg/L of amount, filter element is to the rejection for intermediate ion of intaking between 20%-99%.
MF/UF membrane components surface or MF/UF membrane component Pore Blockings during the utility model filters in order to avoid the first order, are adopted With backwash operation, the suspended solid on the membrane component surface is removed and collected, passed by backwashing across MF/UF membrane pressure difference The pressure difference of MF/UF membrane components both sides in the on-line monitoring first order filtering of sensor component, when pressure difference is more than certain value(≥0.15MPa) When, the MF/UF membrane components in the pressure vessel are backwashed.
The sewage-treatment plant of the utility model includes multiple pressure vessels, can with serial or parallel connection or connection in series-parallel together, Filtration system is that flexible design allows the quality requirement of water outlet to set according to filtration system.The water inlet of single pressure vessel can be Feed liquid of intaking is as former state, or the dense draining of other pressure vessels.System further includes multiple energy recycle devices(As hydraulic pressure increases Depressor), the energy of concentrated water in multiple pressure vessels is collected, for increasing the operation intake in filter element in same pressure vessel Pressure, such as in RO film concentrated waters be up to more than 60% energy be recycled, and NF films can at least recycle >=16% with On concentrated water energy.
The utility model is the membrane module filter that a kind of wastewater treatment uses, in the single pressure vessel of use, series connection At least contain two distinct types of filter element(Pre-process micro-filtration(MF)Or ultrafiltration(UF)The nanofiltration of+membrane filtration(NF)Or reverse osmosis Thoroughly(RO)), required pressure vessel serial or parallel connection can make MF/UF membrane components again together, by the utility model technology It is raw, reduce filtration system area occupied, mitigate fouling membrane, increase economic efficiency.
The utility model has the advantages that compared with prior art:In the Pressure Vessel used by two kinds not The pretreatment of same type(MF/UF membrane components)The filter element of filter element and RO/NF membrane filter units etc., which passes through to interconnect, to be set Together, and by multiple similar pressure vessel serial or parallel connections it arranges, can structurally improve the sky of membrane filtration system device Between utilization rate, be effectively reduced the area of mill site and weight of membrane filtration system, reduce investment cost cost;By supervising online The change in pressure drop of the MF/UF membrane components of first segment in specified pressure container is surveyed, using from one or more of the other pressure vessel Interior first order MF/UF membrane components produce water, and the MF/UF membrane components of first segment in specified pressure container are backwashed, are being reached While effectively removing fouling membrane makes its regeneration, reduce backwash water tank common in prior art, MF/UF film water producing tanks etc. Intermediate has advanced optimized the memory space of membrane filtration system;By being arranged in parallel for multiple pressure vessels, multiple pressure are held The first segment MF/UF membrane components backwash of device can carry out successively, can also use alternately backwash operation, and backwashed Cheng Zhong, appropriateness increase the inflow of other pressure vessel inner membrane members, both ensure that the uninterrupted of membrane filtration system main process Operation operation in turn ensures that main process makes a high position for water continually and steadily;This filtration system is flexible design according to filtering System allows the quality requirement customization of water outlet, reduces floor space, simple to operate, prolonging service lifetime of film, operating cost Safeguard low economical and efficient.
Description of the drawings
Fig. 1 is the structure diagram for the sewage-treatment plant that membrane filtration system performance is improved in the utility model.
In figure:1- flow of inlet water control valves, 2- flow of inlet water sensors, 3- regulating valves, 4- intake pressure sensors, 5- are anti- Rinse across MF/UF membrane pressure gap sensor component, 6- directional control valves, 7-MF/UF membrane components, 8-NF/RO membrane components, 9- pressure appearance Device, 10- second segment NF/RO membrane components, 11- concentrated water flow control valves, 12- concentrated waters pond, 13- backwash flow control valves, 14- are anti- Flushing flow rate sensor, 15- production water flow sensors, 16- productions pond, 17- backwash intake pools.
Specific embodiment
The particular content of the utility model is described in detail with reference to attached drawing.
As shown in Figure 1, a kind of sewage-treatment plant for improving membrane filtration system performance, including multiple pressure parallel with one another Container 9 is all provided in each pressure vessel 9 there are two different types of membrane component and the different types of membrane component arranged in series, A type in different types of membrane component is MF/UF membrane components 7, and another type is RO/NF membrane components 8, pressure vessel 9 On set there are one be used for for different types of membrane component provide intake tunnel water inlet, it is at least one be used for be different types of Membrane component provides the production water out of production aquaporin, at least one concentrated water for being used to provide concentrated water channel for different types of membrane component Outlet and at least one backwash water inlet for being used to provide backwash water inlet for MF/UF membrane components 7;Water inlet by pipeline and Directional control valve 6 is connect with water inlet manifold, and water inlet manifold upper edge water inlet direction is equipped with flow of inlet water control valve 1, water inlet successively Flow sensor 2, regulating valve 3 and intake pressure sensor 4;Production water out is connect by pipeline with outfall sewer, outfall sewer It is connected with production pond 16, outfall sewer upper edge water outlet direction is equipped with discharge pressure sensor, regulating valve and production water flow successively Sensor 15;Concentrated water outlet is connect by pipeline and regulating valve with the water inlet of second segment RO/NF membrane modules 10, second segment RO/ The production water out of NF membrane modules 10 is connect by pipeline with outfall sewer, and the concentrated water outlet of second segment RO/NF membrane modules 10 passes through Pipeline and concentrated water flow control valve 11 are connected with concentrated water pond 12;Backwash water inlet passes through pipeline and regulating valve and Backwash pipeline Connection, the inlet of Backwash pipeline are connected with backwashing intake pool 17, the bypass liquid outlet of directional control valve 6 with backwash Pipeline connects, and backwash water inlet branch connect the Backwash pipeline upper edge backwash water inlet direction of branch with directional control valve successively Equipped with regulating valve and pressure measurement branch, the other end of pressure measurement branch is connect with water inlet manifold, the pressure measurement branch road be equipped with backwash across MF/UF membrane pressure gap sensors component 5, the liquid outlet of Backwash pipeline are connected with backwash discharge bay, and neighbouring counter-flushing liquid is discharged The Backwash pipeline upper edge backwash water outlet direction in pond is equipped with backwash flow sensor 14 and backwash flow control valve successively 13。
The operation method of the sewage-treatment plant described in the utility model for improving membrane filtration system performance, detailed process For:Water inlet feed liquid enters pressure through flow of inlet water control valve and directional control valve by water inlet manifold by the water inlet of pressure vessel Container produces water after MF/UF membrane components and the filtering of NF/RO membrane components by pressure vessel successively into aqueous waste solution in pressure vessel Outlet is discharged into production pond by outfall sewer, and the concentrated water of MF/UF membrane components and NF/RO membrane components is held by pressure in pressure vessel The outlet of device concentrated water enters second segment NF/RO membrane modules by pipeline, and the production water after the filtering of second segment NF/RO membrane modules is by going out Supply mains enters production pond, and the concentrated water after the filtering of second segment NF/RO membrane modules enters concentrated water pond by concentrated water pipeline;Work as recoil Wash across MF/UF membrane pressure gap sensor component measure MF/UF membrane components both sides pressure difference be more than setting pressure value when, alternately stop It runs the pressure vessel of multiple parallel connections and starts backwash process, backwash water inlet passes through the backwash water inlet on pressure vessel Into pressure vessel, backwash water inlet is located in pressure vessel between MF/UF membrane components and NF/RO membrane components, to MF/UF films Backwash water outlet after element backwash enters recoil by the oriented control valve of Backwash pipeline and backwash flow control valve Pond is washed out, alternately the MF/UF membrane components in multiple pressure vessels are backwashed to complete to MF/UF membrane components successively Online backwashing link.
Embodiment 1
When containing the SO including 500mg/L4 2-Into aqueous waste solution pass through the film with the total dissolved solidss salt content of 1000mg/L During filtration system, length is used to pre-process membrane element in the pressure vessel of the glass steel material of 4.7m, to be sequentially connected in series level-one UF Part and three NF membrane components, the first order UF membrane components of the pressure vessel pretreatment that water inlet feed liquid is arranged in parallel respectively by three Afterwards, production water SDI5It is 2.1, turbidity 0.01NTU, pretreated UF productions water is directly entered the second level in same pressure vessel NF membrane components, for effectively removing the various potential pollution ions in feedwater, the second level NF films production water containing low salt concn(Go out There is the SO of 25mg/L in water4 2-Or the total dissolved solidss salt content of 400mg/L)It is discharged by producing the mouth of a river;Correspondingly, containing height Salinity NF films concentrated water is discharged from concentrated water spout.UF membrane pressure vessels with the arrangement of existing same specification and the three-level NF membrane elements after connecting The membrane filtration system device that part pressure vessel is formed is compared, and UF films are in series in single pressure vessel used by the utility model Two different types of filter elements of element and NF membrane components, effective floor space and device quality decline 47% and 28% left side respectively It is right.With the increase of experiment run time, when across UF membrane pressure gap sensor on-line monitoring to UF membrane elements in first pressure vessel During part both ends pressure difference >=0.15MPa, system stops membrane filtration system in first pressure vessel and makes water program, starts the pressure The backwash step of UF membrane components in container, the portion of backwash flow UF membrane components in second and third branch pressure vessel Divide production water.After backwash, it is used for being again started up normally making water step by the directional control valve for being located at pressure vessel inlet end Suddenly, the energy recycle device used in system utilizes in NF concentrated waters 31.5% energy secondary to promote identical membrane component Intake pressure.Due to the use of second segment NF membrane modules, the membrane filtration system production water rate of recovery dramatically increases.
Embodiment 2
When containing the SO including 3000mg/L4 2-Pass through this into aqueous waste solution with the total dissolved solidss salt content of 45000mg/L During membrane filtration system, length is used to pre-process film in the pressure vessel of the glass steel material of 4.7m, to be sequentially connected in series level-one MF Element and three RO membrane components, the first order MF membrane components pretreatment for the pressure vessel being arranged in parallel respectively by three of intaking Afterwards, production water SDI5It is 2.8, turbidity 0.01NTU, pretreated MF films production water is directly entered the second level in same pressure vessel RO membrane components, for effectively removing the various potential pollution ions in feedwater, the second level RO films production water containing low salt concn (There is the SO of 40mg/L in water outlet4 2-Or the total dissolved solidss salt content of 800mg/L)It is discharged by producing the mouth of a river;Correspondingly, contain High salt concentration RO films concentrated water is discharged from concentrated water spout.MF membrane pressure vessels with the arrangement of existing same specification and the three-level RO films after connecting The membrane filtration system device that pressure vessel is formed is compared, and MF membrane elements are in series in single pressure vessel used by the utility model Two different types of filter elements of part and RO membrane components, effective floor space and device quality decline 35% and 22% left side respectively It is right.With the increase of experiment run time, when across UF membrane pressure gap sensor on-line monitoring to MF membrane elements in first pressure vessel During part both ends pressure difference >=0.15MPa, system stops membrane filtration system in first pressure vessel and makes water program, starts the pressure The backwash step of MF membrane components in container, the portion of backwash flow MF membrane components in second and third branch pressure vessel Divide production water.After backwash, it is used for being again started up normally making water step by the directional control valve for being located at pressure vessel inlet end Suddenly, the energy recycle device used in system utilizes in RO concentrated waters 92.4% energy secondary to promote identical membrane component Intake pressure.
The basic principle of the utility model, main feature and advantage has been shown and described above, it is new not departing from this practicality Under the premise of type spirit and scope, the utility model also has various changes and modifications, these changes and improvements both fall within requirement and protect The scope of the utility model of shield.

Claims (5)

1. a kind of sewage-treatment plant for improving membrane filtration system performance, it is characterised in that including multiple parallel with one another or/and string The pressure vessel of connection is equipped at least two different types of membrane components and the different types of membrane component in each pressure vessel Arranged in series, the type in different types of membrane component are MF/UF membrane components, and another type is RO/NF membrane components, pressure Set on force container there are one be used for for different types of membrane component provide intake tunnel water inlet, it is at least one for be difference The membrane component of type provides the production water out of production aquaporin, at least one is used to provide concentrated water channel for different types of membrane component Concentrated water outlet and it is at least one be used for for MF/UF membrane components provide backwash intake backwash water inlet;Water inlet passes through Pipeline and directional control valve are connect with water inlet manifold, the water inlet manifold upper edge water inlet direction successively be equipped with flow of inlet water control valve, Flow of inlet water sensor, regulating valve and intake pressure sensor;Production water out is connect by pipeline with outfall sewer, outfall sewer It is connected with production pond, outfall sewer upper edge water outlet direction is equipped with discharge pressure sensor, regulating valve and production water flow and passes successively Sensor;Concentrated water outlet is connect by pipeline and regulating valve with the water inlet of second segment RO/NF membrane modules, second segment RO/NF film groups The production water out of part is connect by pipeline with outfall sewer, and the concentrated water outlet of second segment RO/NF membrane modules passes through pipeline and concentrated water Flow control valve is connected with concentrated water pond;Backwash water inlet is connect by pipeline and regulating valve with Backwash pipeline, backwash tube The inlet in road is connected with backwash intake pool, and the bypass liquid outlet of directional control valve is connect with Backwash pipeline, backwash The Backwash pipeline upper edge backwash water inlet direction to intake between branch and directional control valve connection branch is equipped with regulating valve successively With pressure measurement branch, the other end of pressure measurement branch is connect with water inlet manifold, and it is poor that pressure measurement branch road is equipped with across the MF/UF membrane pressure of backwash Sensor module, the liquid outlet of Backwash pipeline are connected with backwash discharge bay, the Backwash pipeline of neighbouring backwash discharge bay Upper edge backwash water outlet direction is equipped with backwash flow sensor and backwash flow control valve successively.
2. the sewage-treatment plant according to claim 1 for improving membrane filtration system performance, it is characterised in that:The pressure Different types of membrane component uses the arrangement mode of close contact in container, for effectivelying prevent between membrane component or around membrane component It leaks, pressure vessel both ends set seal assembly respectively, for preventing pressure vessel water outlet, production water out and concentrated water from going out Mouth leaks.
3. the sewage-treatment plant according to claim 1 for improving membrane filtration system performance, it is characterised in that:The membrane element Part surface carries negative electrical charge.
4. the sewage-treatment plant according to claim 1 for improving membrane filtration system performance, it is characterised in that:The pressure Container is hollow funnel-form configuration or Hollow dumb-bell shape configuration, for promoting the flowing and separation of water inlet feed liquid, pressure vessel Material is plastics, fiberglass or alloy material, and the length of pressure vessel is 1-16m.
5. the sewage-treatment plant according to claim 1 for improving membrane filtration system performance, it is characterised in that:The pressure The MF/UF membrane components of series connection and NF/RO membrane components are equipped in container, three pressure vessels are parallel with one another, for improving membrane filtration Efficiency, water inlet feed liquid pre-processed by the MF/UF membrane components of pressure vessel, for remove intake feed liquid in particulate matter and Suspended solid, pretreated production water is directly entered the NF/RO membrane components connected in pressure vessel, for effectively removing into water material Contaminated ion in liquid, treated, and the production water containing low-solubility salt is discharged by producing water out, after the processing of NF/RO membrane components The concentrated water containing high salt concentration and MF/UF film process after concentrated water mixing after from the concentrated water of pressure vessel export discharge.
CN201721564875.XU 2017-11-21 2017-11-21 A kind of sewage-treatment plant for improving membrane filtration system performance Expired - Fee Related CN207546236U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723784A (en) * 2019-10-16 2020-01-24 东莞市鸾江水处理设备工程有限公司 Wastewater treatment and recovery method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110723784A (en) * 2019-10-16 2020-01-24 东莞市鸾江水处理设备工程有限公司 Wastewater treatment and recovery method

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