CN110563060A - Negative-pressure submerged membrane chemical reactor and wastewater treatment method - Google Patents
Negative-pressure submerged membrane chemical reactor and wastewater treatment method Download PDFInfo
- Publication number
- CN110563060A CN110563060A CN201910961309.XA CN201910961309A CN110563060A CN 110563060 A CN110563060 A CN 110563060A CN 201910961309 A CN201910961309 A CN 201910961309A CN 110563060 A CN110563060 A CN 110563060A
- Authority
- CN
- China
- Prior art keywords
- microfiltration membrane
- water
- tank
- pipeline
- chemical reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 187
- 239000000126 substance Substances 0.000 title claims abstract description 41
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 161
- 238000001471 micro-filtration Methods 0.000 claims abstract description 123
- 239000002351 wastewater Substances 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 12
- 231100000719 pollutant Toxicity 0.000 claims abstract description 12
- 238000011010 flushing procedure Methods 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000011001 backwashing Methods 0.000 claims description 19
- 239000010802 sludge Substances 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 210000005056 cell body Anatomy 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 4
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920001780 ECTFE Polymers 0.000 description 2
- -1 Polytetrafluoroethylene Polymers 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The embodiment of the application provides a negative pressure submerged membrane chemical reactor and a wastewater treatment method, and relates to the field of wastewater treatment. The negative pressure immersed membrane chemical reactor comprises an open type tank body and a plurality of microfiltration membrane components arranged in the tank body in a hanging mode, each microfiltration membrane component is hollow, the bottom of each microfiltration membrane component is closed, the tops of all the microfiltration membrane components are communicated with a water production tank through a first pipeline, a self-sucking pump is arranged on the first pipeline, the water production tank is communicated with the microfiltration membrane components through a second pipeline, and a recoil pump is arranged on the second pipeline. The wastewater treatment method comprises the steps of introducing wastewater into a tank body and immersing a microfiltration membrane component; filtering the wastewater outside the microfiltration membrane component to obtain produced water, and pumping the produced water into a water production tank; when the microfiltration membrane component needs to be cleaned, the back flushing pump is started, and the produced water of the water production tank is pumped into the microfiltration membrane component for flushing. The negative pressure immersed membrane chemical reactor has low manufacturing cost and flexible treatment scale, and can effectively remove pollutants on the filter membrane.
Description
Technical Field
The application relates to the field of wastewater treatment, in particular to a negative pressure submerged membrane chemical reactor and a wastewater treatment method.
background
The industrial wastewater has complex sources, various pollutants and great treatment difficulty, and if a large amount of wastewater which is not fully treated is discharged into water bodies such as rivers, lakes and the like, heavy metals enter the atmosphere, water and soil to cause serious environmental pollution. The membrane chemical reactor combines a chemical reaction technology with a membrane separation technology, the chemical reaction strength is further enhanced through the membrane separation technology, the chemical reaction is more thorough, and the water quality of produced water treated by the membrane chemical reactor is greatly superior to that treated by the traditional precipitation filtration technology.
The existing membrane chemical reactor is mainly of positive pressure type, and is characterized in that a filtering membrane is arranged in a tank body, and water to be treated is filtered by the filtering membrane under certain pressure. However, because the tank body is pressure-bearing and most of the water to be treated is strong acid or strong alkali, the strength and the corrosion resistance of the material of the tank body are required to be high, and the manufacturing cost is higher; and because the tank body needs to bear pressure, the size of the tank body and the water treatment scale are limited to a certain extent. In addition, most of the existing membrane chemical reactors are provided with an aeration device at the bottom of a tank body for removing filter cakes on the surface of a filter membrane, but the mode cannot ensure that pollutants attached to each membrane wire can be flushed by bubbles, so that the treatment effect is not ideal.
Disclosure of Invention
An object of the embodiments of the present application is to provide a negative pressure submerged membrane chemical reactor and a wastewater treatment method, which are low in manufacturing cost, flexible in treatment scale, and capable of effectively removing contaminants on a filtration membrane.
In a first aspect, an embodiment of the present application provides a negative pressure submerged membrane chemical reactor, which includes an open-type tank body, and a plurality of microfiltration membrane components suspended in the tank body, each microfiltration membrane component is hollow, and the bottom is closed, the tops of all microfiltration membrane components are communicated with a water production tank outside the tank body through a first pipeline, a self-priming pump is arranged on the first pipeline, the water production tank is communicated with the top of the microfiltration membrane component through a second pipeline, and a recoil pump is arranged on the second pipeline.
In the implementation process, the suspended microfiltration membrane component is immersed in the wastewater to be treated, a self-priming pump generates certain negative pressure, so that the wastewater outside the microfiltration membrane component is filtered by the microfiltration membrane component, various impurities and microorganisms in the wastewater are intercepted on the surface of membrane filaments by the microfiltration membrane component to form a filter cake, and the filtered produced water is pumped into a water production tank from the top; and (3) periodically pumping the produced water in the water production tank into the microfiltration membrane component through a back flushing pump, and effectively stripping off a filter cake formed on the surface of the membrane filaments of the microfiltration membrane component. The tank body of the negative pressure immersed membrane chemical reactor is of an open structure, and the tank body does not need to bear pressure; moreover, the processing scale is greatly improved compared with the metal tank body, so that the manufacturing cost can be greatly reduced, and the processing scale is flexible; the device does not need an aeration device, has simple process for removing filter cakes, can effectively remove the filter cakes formed on the surface of each membrane wire of the microfiltration membrane component by utilizing the produced water backflushing, reduces the formation of pollutants on the membrane wires, ensures the stable operation of subsequent treatment units, and keeps the stable operation of a system.
in a possible implementation, the tank body is provided with a water inlet for introducing wastewater; a backwashing water outlet for discharging backwashing water is arranged at the position of the tank body below the microfiltration membrane component.
In the implementation process, a water inlet is arranged in the tank body and used for introducing the wastewater to be treated into the tank body; the tank body is provided with a backflushing water outlet for discharging backflushing sewage in the tank body during backflushing.
In one possible implementation mode, the bottom of the tank body is provided with a sludge discharge port; optionally, the bottom of the tank body is of a cone type structure, and the bottom of the cone is provided with a sludge discharge port.
In the implementation process, the filter cake flushed back settles at the bottom, and a sludge discharge port is arranged at the bottom of the tank body and used for discharging the filter cake; the cone-shaped structure is convenient for a filter cake formed after the filtration of the micro-filtration membrane component to settle in the inner part and then pass through the sludge discharge port.
In a possible implementation mode, a liquid level meter is further arranged in the tank body.
In the implementation process, the liquid level meter is arranged inside the pool body and used for controlling the water level in the pool body and preventing the water level from being too high or too low.
In a possible implementation mode, the device further comprises a fixed shell which is fixed in the tank body and is positioned on the microfiltration membrane component, the top of each microfiltration membrane component is fixed on the fixed shell, the hollow part of each microfiltration membrane component is communicated with the inside of the fixed shell, and the fixed shell is communicated with the water production tank through a first pipeline.
in the implementation process, the microfiltration membrane component is directly mounted on the fixed shell, the structure is simple, the microfiltration membrane component can be mounted in the tank body in a suspended mode, the first pipeline is communicated with the inside of the fixed shell, the top of the microfiltration membrane component can be communicated with the first pipeline through the fixed shell, and therefore the top of the microfiltration membrane component is communicated with the water production tank.
In a possible implementation mode, the sewage treatment device further comprises a raw water tank, wherein the raw water tank is provided with a water inlet, a dosing port, a water outlet and a water outlet, the water inlet is used for supplementing wastewater to be treated, the dosing port is used for dosing a medicament, the water outlet is used for discharging the wastewater, the water outlet is communicated with the pool body through a raw water pipeline, and a raw water pump is arranged on the pipeline.
In the above-mentioned realization in-process, supply pending waste water through the water inlet toward former water tank in, add the medicament through adding the waste water of medicine mouth toward former water tank in and carry out chemical reaction, the delivery port passes through former water pipeline and cell body intercommunication, and the raw water pump on the pipeline starts, just can go into the waste water pump through chemical reaction in the former water tank and carry out filtration treatment in the pond for further strengthen chemical reaction intensity, make chemical reaction more thorough.
In one possible implementation mode, the filtering pore diameter of the microfiltration membrane component is 0.1-10 μm, and the material is fluorine-containing material.
In the implementation process, the microfiltration membrane component with the filtering aperture of 0.1-10 mu m has good filtering effect, the surface of the microfiltration membrane component membrane filaments made of fluorine-containing materials is smooth, a fixing device is not arranged at the bottom end of the microfiltration membrane component, and the soft form can quickly and effectively strip the filter cakes formed on the membrane filaments.
In one possible implementation, the microfiltration membrane module is in the form of a bag or a tube, and has an outer diameter of 3 to 30 mm.
In the implementation process, the bag-type or tube-type microfiltration membrane component is hollow, the bottom end of the bag-type or tube-type microfiltration membrane component is closed, so that the wastewater outside the microfiltration membrane component can be filtered through the microfiltration membrane component, and the microfiltration membrane component with the outer diameter of 3-30 mm has proper filtering area and good filtering effect.
In a second aspect, the present application provides a wastewater treatment method based on the negative pressure submerged membrane chemical reactor provided in the first aspect, which includes the following steps:
Introducing wastewater to be treated into the tank body, so that the microfiltration membrane component is immersed in the wastewater;
Starting a self-priming pump to generate negative pressure, filtering the wastewater outside the microfiltration membrane component by using a microfiltration membrane component to obtain produced water, and pumping the produced water into a production water tank;
When the microfiltration membrane component needs to be cleaned, the back flushing pump is started, the produced water of the water production tank is pumped into the microfiltration membrane component, and pollutants on the outer surface of the microfiltration membrane component are washed away.
in the implementation process, the wastewater treatment method adopting the negative-pressure immersed membrane chemical reactor can effectively filter the wastewater and effectively remove pollutants on the filtering membrane.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a negative pressure submerged membrane chemical reactor according to a first embodiment of the present disclosure;
FIG. 2 is a schematic structural view of the stationary housing part of FIG. 1;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
Fig. 4 is a schematic structural diagram of a negative pressure submerged membrane chemical reactor according to a second embodiment of the present application.
Icon: 100-negative pressure immersed membrane chemical reactor; 110-a tank body; 120-a microfiltration membrane module; 121-a first conduit; 122-a self-priming pump; 130-a water production tank; 141-a second line; 142-a back flush pump; 161-drainage pipeline; 162-a drain pump; 163-a water collection sump; 164-a sludge discharge conduit; 165-sludge pump; 166-a mud collection tank; 170-fixing the shell; 171-an upper plate; 172-lower plate; 173-enclosing plate; 174-a through hole; 175-edge; 176-a fastener; 200-negative pressure immersed membrane chemical reactor; 210-raw water tank; 211-a water inlet; 212-a medicine adding port; 213-a water outlet; 214-raw water line; 215-raw water pump; 221-produced water discharge port; 222-bottom slag discharge.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
in order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used only for convenience in describing the present application and for simplification of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
in the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
first embodiment
referring to fig. 1, the present embodiment provides a negative pressure submerged membrane chemical reactor 100, which includes an open tank body 110, and a plurality of microfiltration membrane assemblies 120 suspended in the tank body 110, each microfiltration membrane assembly 120 is hollow and has a closed bottom, the tops of all the microfiltration membrane assemblies 120 are communicated with a water production tank 130 outside the tank body 110 through a first pipeline 121, the first pipeline 121 is provided with a self-priming pump 122, the water production tank 130 is further communicated with the tops of the microfiltration membrane assemblies 120 through a second pipeline 141, and the second pipeline 141 is provided with a back-flushing pump 142. The components and the connection relationship in the present embodiment will be described in detail below.
In this embodiment, the tank body 110 is provided with a water inlet (not shown) for introducing wastewater, the water inlet is generally located at a side of the tank body 110 and below the microfiltration membrane assembly 120, so that the introduced wastewater is filtered by the microfiltration membrane assembly 120 in a bottom-to-top flow manner. A backwashing water outlet for discharging backwashing water is formed in the position, below the microfiltration membrane component 120, of the tank body 110, backwashing water generated after backwashing the microfiltration membrane by using produced water of the water production tank 130 can naturally flow to the backwashing water outlet to be discharged, and in order to quickly discharge the backwashing water, in the embodiment, the backwashing water outlet is further connected with a drainage pipe 161, and the drainage pipe 161 is provided with a drainage pump 162 for automatically pumping the backwashing water into a water collection tank 163 outside the tank body 110. In order to collect and discharge the backflushed filter cakes together, the bottom of the tank body 110 is of a cone-shaped structure, a sludge discharge port is arranged at the bottom of the cone-shaped structure, and in order to discharge the filter cakes quickly, in this embodiment, the sludge discharge port is further connected with a sludge discharge pipeline 164, and a sludge discharge pump 165 is arranged on the sludge discharge pipeline 164 and used for automatically pumping the filter cakes collected in the cone-shaped structure into a sludge collection groove 166 outside the tank body 110. In other embodiments of the present application, a liquid level meter is further disposed in the tank body 110.
in order to realize the suspended installation of all the microfiltration membrane modules 120, the negative pressure submerged membrane chemical reactor 100 further comprises a fixed housing 170 fixed in the tank body 110 and located on the microfiltration membrane modules 120, the top of each microfiltration membrane module 120 is fixed on the fixed housing 170, the hollow part of each microfiltration membrane module 120 is communicated with the inside of the fixed housing 170, and the fixed housing 170 is communicated with the water production tank 130 through a first pipeline 121.
The microfiltration membrane module 120 used in this embodiment is a curtain membrane module, and the microfiltration membrane module 120 is made of filtration membranes, and has a form of upper end water collection, hollow, lower end sealing, and a free and loose structure. Specifically, the microfiltration membrane module 120 is generally in the form of a bag or a tube, and has an outer diameter of Φ 3- Φ 30 mm, optionally Φ 10- Φ 20 mm, and as an alternative embodiment, the outer diameter of the microfiltration membrane module 120 is Φ 3 mm, Φ 7 mm, Φ 10 mm, Φ 15 mm, Φ 20 mm, Φ 25 mm, or Φ 30 mm, or an intermediate value between any two values. Typically, the microfiltration membrane module 120 has a filter pore size of 0.1 to 10 μm, such as 0.1 μm, 0.3 μm, 0.5 μm, 0.7 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm or an intermediate value between any two values, the specific filter pore size being determined by the composition of the wastewater to be filtered; the material of the microfiltration membrane module 120 is generally a fluorine-containing material, and specifically, the material may be Polytetrafluoroethylene (PTFE) or Ethylene-chlorotrifluoroethylene copolymer (ECTFE).
In order to mount the microfiltration membrane assembly 120 in a suspended manner and realize a filtering function, the microfiltration membrane assembly can be realized in a manner disclosed by an authorized publication number CN 207546240U, specifically, the fixed shell 170 comprises a membrane shell, a membrane wire distribution plate and fillers, and the microfiltration membrane assembly 120 corresponds to the hollow fiber membrane wires; but may also be implemented in other ways.
In this embodiment, referring to fig. 2 and 3, in order to communicate the hollow parts of all the microfiltration membrane modules 120 with the inside of the fixed housing 170, the fixed housing 170 includes a hollow structure composed of an upper plate 171, a lower plate 172 and a surrounding plate 173, the upper plate 171 can be detached, and only the bottom (the part immersed in the wastewater) of the fixed housing 170 needs to be closed; the microfiltration membrane assembly 120 is mounted to the lower plate 172, and the upper plate 171 is provided with a water producing port communicating with the first pipe 121.
In order to enable the microfiltration membrane module 120 to be quickly suspended on the fixed housing 170, the lower plate 172 of the fixed housing 170 is provided with through holes 174 corresponding to the microfiltration membrane modules 120 one by one, each through hole 174 protrudes towards the inside of the solid housing to form an edge 175, the top of each microfiltration membrane module 120 passes through the corresponding through hole 174 and is fixedly suspended on the edge 175, the hollow part of the microfiltration membrane module 120 needs to be communicated with the inside of the fixed housing 170, and meanwhile, the filtration membrane of the microfiltration membrane module 120 wraps the edge 175, so that pollutants in the wastewater are prevented from directly entering the through holes 174 and then entering the fixed housing 170 without being filtered. Specifically, the top of the tubular or bag microfiltration membrane module 120 is inserted through the through hole 174, and the edge 175 covering the through hole 174 is folded outward, and then fixed to the edge 175 by a fixing member 176 having a shape matching the edge 175. In this embodiment, the edge 175 is cylindrical, the fixing member 176 is also cylindrical, and a groove is provided on the bottom surface of the circular ring, and the groove can be exactly clamped on the corresponding edge 175, so as to fix the top of the microfiltration membrane module 120 on the edge 175 and seal it relatively (water must pass through the filtration membrane), in order to further ensure the sealing effect of the fixing member 176, a clamping edge is provided in the groove of the fixing member 176, the clamping edge is arranged relatively, and is used for clamping the edge 175 located in the groove, and correspondingly, the edge 175 can also be provided with a recessed edge for positioning the clamping edge; after the fixing members 176 are installed in place, pressing plates can be further arranged on all the fixing members 176 and used for pressing the fixing members 176, so that the fixing members 176 are firmly clamped on the corresponding edges 175 to fix the microfiltration membrane assembly 120, and the fixing members 176 are prevented from being out of order due to the fact that the fixing members 176 float upwards to separate from the corresponding edges 175 due to buoyancy. The installation of the microfiltration membrane assemblies 120 is realized through the structural design of the fixed shell 170 and the fixed part 176, the installation method is simple, the produced water of each microfiltration membrane assembly 120 can be connected with the first pipeline 121 through the water producing port, the operation is simple, and the problem of integral sealing of the fixed shell 170 and the tank body 110 does not need to be considered.
The installation method of the microfiltration membrane module 120 in the embodiment is as follows: the upper plate 171 is removed, the bottom of the microfiltration membrane module 120 passes through the corresponding through hole 174 on the lower plate 172 from the opening of the tank body 110 downwards until the top of the microfiltration membrane module 120 is just positioned on the edge 175, then the filtration membrane on the top of the microfiltration membrane module 120 is turned outwards to wrap the edge 175, and the groove of the fixing piece 176 is clamped on the edge 175 covered with the filtration membrane.
referring to fig. 1 (the arrows on the pipe indicate the flow direction of water), the present embodiment further provides a wastewater treatment method based on the above-mentioned negative pressure submerged membrane chemical reactor 100, which comprises the following steps:
Introducing wastewater to be treated into the tank body 110 through the water inlet so that the wastewater is immersed in the microfiltration membrane assembly 120, wherein the edge 175 is generally required to be immersed;
the self-priming pump 122 is started to generate negative pressure, so that the wastewater inside the tank body 110 and outside the microfiltration membrane component 120 is filtered by the microfiltration membrane component 120 to obtain produced water, and the produced water is pumped into the produced water tank 130 through the first pipeline 121.
When the microfiltration membrane assembly 120 needs to be cleaned, wastewater in the tank body 110 is discharged through the backwashing water outlet firstly, so that the microfiltration membrane assembly 120 is completely exposed out of the water surface, then the backwashing pump 142 is started, produced water of the water production tank 130 is pumped into the microfiltration membrane assembly 120 through the second pipeline 141, pollutants on the outer surface of the microfiltration membrane assembly are washed away, backwashing water is discharged through the backwashing water outlet, and the pollutants are gathered at the bottom of the tank body 110 and discharged through the sludge outlet.
Second embodiment
Referring to fig. 1 and 4, a structure of a negative pressure submerged membrane chemical reactor 200 provided in this embodiment is substantially the same as that of the first embodiment, and specifically, the negative pressure submerged membrane chemical reactor 200 of this embodiment includes a raw water tank 210, a tank body 110, a fixed housing 170, a self-priming pump 122, a back-flushing pump 142, and a plurality of microfiltration membrane assemblies 120 suspended in the fixed housing 170 in the tank body 110. The configuration of the apparatus, the connection relationship of the respective components, and the functions will be described in detail below.
The raw water tank 210 is provided with a water inlet 211, a chemical adding port 212, a water outlet 213 and a water outlet, the water inlet 211 is used for supplementing wastewater to be treated, the chemical adding port 212 is used for adding chemicals, the water outlet 213 is used for discharging wastewater, the water outlet is communicated with the tank body 110 through a raw water pipeline 214, and a raw water pump 215 is arranged on the pipeline.
The tank body 110 is open at the top, a fixed shell 170 is fixedly arranged at the top in the tank body 110, a plurality of microfiltration membrane assemblies 120 are suspended on a lower plate 172 of the fixed shell 170, and a water producing port is arranged on the lower plate 172 of the fixed shell 170 and communicated with the first pipeline 121. A water inlet 211 for introducing waste water is arranged on the side surface of the tank body 110, and the water inlet 211 is communicated with a water outlet of the raw water tank 210 through a pipeline; a backwashing water outlet 213 for discharging backwashing water is arranged at the position of the tank body 110 below the microfiltration membrane component 120; the bottom of the tank body 110 is a cone-shaped structure, and the bottom of the cone is provided with a sludge discharge port.
The top of the microfiltration membrane assembly 120 is fixed on the fixed housing 170, and the hollow part is communicated with the inside, and the fixed housing 170 is communicated with the water production tank 130 through the first pipeline 121. Specifically, the upper plate 171 of the stationary housing 170 is provided with a water producing port for communicating with the first pipe 121.
The top of the microfiltration membrane component 120 is water-producing and hollow, and the bottom is closed, the top of the microfiltration membrane component 120 is communicated with the inside of the fixed shell 170, and the water-producing port of the fixed shell 170 is communicated with the water-producing tank 130 outside the tank body 110 through the first pipeline 121.
produce water tank 130 and be equipped with water inlet 211, this water inlet 211 with produce the water mouth and pass through first pipeline 121 intercommunication, and be provided with self priming pump 122 on first pipeline 121, self priming pump 122 is gone into the water that microfiltration membrane module 120 filters out through the suction and is produced water tank 130. The side bottom of producing water tank 130 is equipped with the backwash water mouth, and the backwash water mouth is through second pipeline 141 and produce water mouth intercommunication, is provided with recoil pump 142 on the second pipeline 141, and the delivery port of recoil pump 142 is connected with the product water pipeline between microfiltration membrane subassembly 120 and the self priming pump 122, and the backwash pump 142 is with producing the water pump income microfiltration membrane subassembly 120 in the water tank 130. The top and bottom of the side of the water production tank 130 are also provided with a water production outlet 221 and a bottom slag outlet 222 for discharging produced water, respectively.
The embodiment provides a wastewater treatment method based on the negative pressure submerged membrane chemical reactor 100, which comprises the following steps:
Starting a raw water pump 215, pumping the wastewater with the medicament added in the raw water tank 210 into the tank body 110, and immersing the microfiltration membrane component 120 in the wastewater;
The self-priming pump 122 is started to generate negative pressure, so that the wastewater outside the microfiltration membrane component 120 is filtered by the microfiltration membrane component 120 to obtain produced water, and the produced water is pumped into the produced water tank 130.
When the microfiltration membrane module 120 needs to be cleaned, the back flushing pump 142 is started, and the produced water of the water production tank 130 is pumped into the microfiltration membrane module 120 to flush away the pollutants on the outer surface of the microfiltration membrane module.
The wastewater treatment method adopting the negative pressure immersed membrane chemical reactor 100 is simple in process, wastewater to be treated is pumped into the tank body 110 through the raw water pump 215, produced water filtered out by the microfiltration membrane component 120 is pumped into the water production tank 130 through the self-priming pump 122 under certain negative pressure, various impurities and microorganisms in the wastewater are intercepted on the surface of membrane filaments by the microfiltration membrane component 120, and the produced water in the water production tank 130 is used for effectively stripping filter cakes formed on the surface of the membrane filaments through the backwashing pump at regular time. The stripped filter cake is discharged through a sludge discharge port in the membrane chemical reactor at regular time. Because the tank body 110 is an open structure, excessive pressure does not need to be borne, metal elements are hardly needed in the tank body 110, the treatment scale can be greatly improved compared with a tank body made of metal, and the manufacturing cost can be greatly reduced.
In summary, the negative pressure submerged membrane chemical reactor and the wastewater treatment method of the embodiment of the present application have the advantages of low manufacturing cost and flexible treatment scale, and can effectively remove pollutants on the filtration membrane.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. The utility model provides a negative pressure submerged membrane chemical reactor, its characterized in that, it includes the open-type cell body to and a plurality of hangs set up in microfiltration membrane subassembly in the cell body, every the microfiltration membrane subassembly cavity, and the bottom is sealed, all the top of microfiltration membrane subassembly through first pipeline with the water tank intercommunication is produced to the cell body outside, just be provided with the self priming pump on the first pipeline, produce the water tank still through the second pipeline with the top intercommunication of microfiltration membrane subassembly, just be provided with the recoil pump on the second pipeline.
2. The negative pressure submerged membrane chemical reactor of claim 1, wherein the tank body is provided with a water inlet for introducing wastewater; and a backwashing water outlet for discharging backwashing water is formed in the position, below the microfiltration membrane component, of the tank body.
3. The negative pressure submerged membrane chemical reactor according to claim 1, wherein a sludge discharge port is formed at the bottom of the tank body; optionally, the bottom of the tank body is of a cone-shaped structure, and the sludge discharge port is arranged at the bottom of the cone-shaped structure.
4. The negative pressure submerged membrane chemical reactor of claim 1, wherein a liquid level gauge is further disposed in the tank.
5. the negative-pressure submerged membrane chemical reactor according to claim 1, further comprising a fixed housing fixed in the tank and located on the microfiltration membrane modules, wherein the top of each microfiltration membrane module is fixed on the fixed housing, and the hollow part of each microfiltration membrane module is communicated with the inside of the fixed housing, and the fixed housing is communicated with the water production tank through the first pipeline.
6. The negative-pressure submerged membrane chemical reactor according to claim 1, further comprising a raw water tank, wherein the raw water tank is provided with a water inlet, a dosing port, a water outlet and a water outlet, the water inlet is used for supplementing wastewater to be treated, the dosing port is used for dosing chemicals, the water outlet is used for discharging wastewater, the water outlet is communicated with the tank body through a raw water pipeline, and a raw water pump is arranged on the pipeline.
7. The negative-pressure submerged membrane chemical reactor according to claim 1, wherein the microfiltration membrane module has a filtration pore size of 0.1 to 10 μm and is made of a fluorine-containing material.
8. The negative pressure submerged membrane chemical reactor according to claim 1, wherein the microfiltration membrane module is a bag or a tube type and has an outer diameter of 3 to 30 mm.
9. A wastewater treatment method based on the negative pressure submerged membrane chemical reactor of claim 1, which comprises the following steps:
Introducing wastewater to be treated into the tank body, so that the wastewater submerges the microfiltration membrane component;
Starting the self-priming pump to generate negative pressure, filtering the wastewater outside the microfiltration membrane component by the microfiltration membrane component to obtain produced water, and pumping the produced water into a water production tank;
When the microfiltration membrane component needs to be cleaned, the back flushing pump is started, the produced water of the water production tank is pumped into the microfiltration membrane component, and pollutants on the outer surface of the microfiltration membrane component are flushed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961309.XA CN110563060A (en) | 2019-10-10 | 2019-10-10 | Negative-pressure submerged membrane chemical reactor and wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961309.XA CN110563060A (en) | 2019-10-10 | 2019-10-10 | Negative-pressure submerged membrane chemical reactor and wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110563060A true CN110563060A (en) | 2019-12-13 |
Family
ID=68784649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910961309.XA Pending CN110563060A (en) | 2019-10-10 | 2019-10-10 | Negative-pressure submerged membrane chemical reactor and wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110563060A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112316735A (en) * | 2020-10-26 | 2021-02-05 | 武汉工程大学 | Microfiltration membrane pipe and backflushing aeration coupling type immersed tube MBR assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7122121B1 (en) * | 2004-05-28 | 2006-10-17 | Jiang Ji | Advanced submerged membrane modules, systems and processes |
| CN101891280A (en) * | 2010-05-14 | 2010-11-24 | 江西金达莱环保研发中心有限公司 | Solid-liquid separation system for heavy metal wastewater treatment after chemical precipitation |
| CN102464385A (en) * | 2010-11-15 | 2012-05-23 | 东丽纤维研究所（中国）有限公司 | Integrated coagulation/immersion type membrane filter system |
| CN105217734A (en) * | 2015-10-28 | 2016-01-06 | 天津大学 | A kind of rotation immersion water treatment ultra filtration method and device |
| CN109052729A (en) * | 2018-09-11 | 2018-12-21 | 博天环境集团股份有限公司 | A kind of processing system and processing method of coal mine drainage water |
| CN109107396A (en) * | 2018-08-20 | 2019-01-01 | 南京工业大学 | A method of mine water is handled using fly ash base microfiltration membranes negative-pressure ward |
| CN210635748U (en) * | 2019-10-10 | 2020-05-29 | 博天环境集团股份有限公司 | Negative pressure immersed membrane chemical reactor |
-
2019
- 2019-10-10 CN CN201910961309.XA patent/CN110563060A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7122121B1 (en) * | 2004-05-28 | 2006-10-17 | Jiang Ji | Advanced submerged membrane modules, systems and processes |
| CN101891280A (en) * | 2010-05-14 | 2010-11-24 | 江西金达莱环保研发中心有限公司 | Solid-liquid separation system for heavy metal wastewater treatment after chemical precipitation |
| CN102464385A (en) * | 2010-11-15 | 2012-05-23 | 东丽纤维研究所（中国）有限公司 | Integrated coagulation/immersion type membrane filter system |
| CN105217734A (en) * | 2015-10-28 | 2016-01-06 | 天津大学 | A kind of rotation immersion water treatment ultra filtration method and device |
| CN109107396A (en) * | 2018-08-20 | 2019-01-01 | 南京工业大学 | A method of mine water is handled using fly ash base microfiltration membranes negative-pressure ward |
| CN109052729A (en) * | 2018-09-11 | 2018-12-21 | 博天环境集团股份有限公司 | A kind of processing system and processing method of coal mine drainage water |
| CN210635748U (en) * | 2019-10-10 | 2020-05-29 | 博天环境集团股份有限公司 | Negative pressure immersed membrane chemical reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112316735A (en) * | 2020-10-26 | 2021-02-05 | 武汉工程大学 | Microfiltration membrane pipe and backflushing aeration coupling type immersed tube MBR assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111135718A (en) | Sewage filtering device and filtering method | |
| JPWO2007083723A1 (en) | Membrane filtration apparatus and method for operating the same | |
| CN210635748U (en) | Negative pressure immersed membrane chemical reactor | |
| JPH09103655A (en) | Hollow fiber membrane filter | |
| CN110563060A (en) | Negative-pressure submerged membrane chemical reactor and wastewater treatment method | |
| CN210613021U (en) | Metal film filter core, metal film filter and sewage treatment depth filtration system | |
| JPH09131517A (en) | Hollow fiber membrane module and method for using the same | |
| CN115770433A (en) | Novel full-automatic tubular milipore filter preliminary treatment filters device | |
| CN211111507U (en) | MCR membrane chemical separation device | |
| JP7213711B2 (en) | Water treatment device and water treatment method | |
| CN219044872U (en) | High-density sedimentation tank device based on novel microfiltration membrane improvement | |
| CN215559431U (en) | Silver-containing waste liquid recycling treatment device | |
| CN212982733U (en) | Facultative MBR membrane municipal sewage treatment equipment | |
| CN213327232U (en) | Vehicle-mounted sewage treatment device | |
| CN210764736U (en) | Electroplating solution filtration equipment | |
| CN212017406U (en) | High-temperature-resistant solid-liquid separation device | |
| CN220845826U (en) | Industrial wastewater treatment equipment | |
| CN211885678U (en) | Spiral precipitation filter device | |
| CN215388749U (en) | Filter system is used in special chemicals production of environment-friendly electron | |
| CN214936575U (en) | Industrial sewage filtering device | |
| CN211035564U (en) | Water purifying device | |
| CN217015593U (en) | Combined full-automatic intelligent filtering device | |
| CN210419546U (en) | Seawater desalination pretreatment device | |
| CN211767765U (en) | Resin tank suitable for amine liquid purification | |
| CN216223819U (en) | Phosphorus-containing wastewater microfiltration membrane tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201208 Address after: 100082, 12A06-08 building, Shougang complex, No. 60 North Main Street, Haidian District, Beijing, Xizhimen Applicant after: POTEN ENVIRONMENT GROUP Co.,Ltd. Applicant after: MEMSINO MEMBRANE TECHNOLOGY (BEIJING) Co.,Ltd. Address before: 100082, 12A06-08 building, Shougang complex, No. 60 North Main Street, Haidian District, Beijing, Xizhimen Applicant before: POTEN ENVIRONMENT GROUP Co.,Ltd. Applicant before: MEMSINO MEMBRANE TECHNOLOGY (BEIJING) Co.,Ltd. Applicant before: ZHONGHUAN FILM MATERIAL TECHNOLOGY (DAYE) Co.,Ltd. |
|
| TA01 | Transfer of patent application right |