Material membrane device for treating leachate membrane filtration concentrated solution

Abstract

The utility model provides a material membrane device for treating percolate membrane filtration concentrated solution, which comprises a base, a pressure-resistant membrane shell, a roll-type material membrane component for filtration, a nanofiltration concentrated solution tank, a clear solution pool and a concentrated solution pool, the pressure-resistant membrane shell is arranged on the base, the roll-type material membrane component is arranged in the pressure-resistant membrane shell, and the nanofiltration concentrated solution tank is arranged in the clear solution pool. The utility model discloses a material membrane device for treating leachate membrane filtration concentrated solution, which comprises a plurality of spiral-wound material membrane components, the spiral-wound material membrane components are connected, a self-locking mechanism is arranged at the joint of the spiral-wound material membrane components and the spiral-wound material membrane components, and the spiral-wound material membrane components are divided into three sections. According to the spiral-wound material membrane assembly, the collection amount of clear liquid is greatly increased, the production amount of concentrated liquid is reduced, rapid connection of the connecting position of the spiral-wound material membrane assembly can be achieved, and meanwhile the connecting position of the spiral-wound material membrane assembly is prevented from falling off in the filtering process.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a material membrane device for treating leachate membrane filtration concentrate. Background Art

[0002] Landfill leachate treatment is a complex process that aims to remove organic matter in leachate through physical, chemical and biological methods to protect the environment from pollution. The treatment processes mainly include biological treatment, physical and chemical treatment and membrane treatment. The specific process varies according to the treatment process. Among them, biological treatment plus membrane treatment process is widely used in the treatment of landfill leachate.

[0003] The concentrated liquid produced by the membrane unit in the leachate treatment system is a difficult-to-degrade organic wastewater, and is also characterized by high salt content and high calcium and magnesium hardness. It is difficult to treat and has high treatment costs. The structure of the existing material membrane is relatively simple, the filtration effect is poor, and the joints of the rolled material membrane assembly cannot be quickly fixed and locked and are prone to falling off during the filtration process, affecting the filtration effect.

[0004] Therefore, it is urgent to redesign a material membrane device for treating leachate membrane filtration concentrate to solve the above problems. Utility Model Content

[0005] The utility model provides a material membrane device for treating leachate membrane filtration concentrate, so as to solve the technical problems raised in the above background technology.

[0006] The utility model provides a material membrane device for treating leachate membrane filtration concentrate, characterized in that it includes: a base, a pressure-resistant membrane shell, a rolled material membrane assembly for filtration, a nanofiltration concentrate tank, a clear liquid pool and a concentrated liquid pool, the pressure-resistant membrane shell is arranged on the base, one end of the pressure-resistant membrane shell is a water inlet end, and the other end of the pressure-resistant membrane shell is a water outlet end, the interior of the pressure-resistant membrane shell is hollow, the rolled material membrane assembly is arranged inside the pressure-resistant membrane shell, the number of the rolled material membrane assemblies is three, namely the first section rolled material membrane assembly, the second section rolled material membrane assembly and the third section rolled material membrane assembly, the nanofiltration concentrate tank is connected to the water inlet end of the pressure-resistant membrane shell, the clear liquid pool is connected to the third section rolled material membrane assembly, and the concentrated liquid pool is connected to the water outlet end of the pressure-resistant membrane shell.

[0007] Furthermore, the roll-type material membrane components are connected in pairs, and a connecting pipe is provided at the connection point. The roll-type material membrane components include: a clear liquid collection tube, a material membrane and a clear liquid collection tube end cover. The clear liquid collection tube end cover is arranged at one end of the clear liquid collection tube. A plurality of water receiving holes are opened on the clear liquid collection tube. The structure around the water receiving holes is inclined. The material membrane is wrapped around the clear liquid collection tube. The tangential structure of the material membrane is spiral. The material membrane consists of a five-layer structure. The first layer and the fifth layer of the material membrane are water production grids, the second layer and the fourth layer of the material membrane are filter membranes, and the third layer of the material membrane is a water inlet grid. The two ends of the water inlet grid are bonded to the two ends of the filter membrane, and the water production grid can only flow clear liquid.

[0008] Furthermore, a locking rod is fixedly provided on the outer surface of the connecting tube, two fixed plates are fixedly provided on the end cover of the clear liquid collection tube, a rotating locking sleeve is provided between the fixed plates, the rotating locking sleeve is concave-shaped, and a barb structure is provided at the opening of the rotating locking sleeve, and one end of the rotating locking sleeve is fixedly connected to the fixed plate by a bolt.

[0009] Furthermore, a water-stop sealing ring is provided inside the pressure-resistant membrane shell, sealing end covers are provided at both ends of the pressure-resistant membrane shell, and a first water pump is provided at the connection between the water inlet end of the pressure-resistant membrane shell and the nanofiltration concentrated liquid tank.

[0010] Furthermore, a first water pump is provided at the connection between the nanofiltration concentrate tank and the water inlet end of the pressure-resistant membrane shell, the first-section rolled material membrane assembly is connected to the third-section rolled material membrane assembly, and a second water pump and an intermediate water tank are provided at the connection, the second-section rolled material membrane assembly is connected to the nanofiltration concentrate tank, and a third water pump is provided at the connection.

[0011] Beneficial effects

[0012] A material membrane device for treating leachate membrane filtration concentrate includes a base, a pressure-resistant membrane shell, a rolled material membrane assembly for filtration, a nanofiltration concentrate tank, a clear liquid pool and a concentrated liquid pool, the pressure-resistant membrane shell is arranged on the base, a water-stop sealing ring is arranged inside the pressure-resistant membrane shell, the rolled material membrane assembly is arranged inside the pressure-resistant membrane shell, the number of the rolled material membrane assemblies is three, namely the first-section rolled material membrane assembly, the second-section rolled material membrane assembly and the third-section rolled material membrane assembly, the rolled material membrane assemblies are connected in pairs, and a connecting pipe is provided at the connection, the nanofiltration concentrate tank is connected to the water inlet end of the pressure-resistant membrane shell, a first water pump is provided at the connection, the first-section rolled material membrane assembly is connected to the third-section rolled material membrane assembly, a second water pump and an intermediate water tank are provided at the connection, the first The two-stage rolled material membrane assembly is connected to the nanofiltration concentrate tank, and a third water pump is provided at the connection point. A clear liquid collection pipe end cover is provided at one end of the rolled material membrane assembly, and a locking rod is fixedly provided on the outer surface of the connecting pipe. The clear liquid collection pipe end cover is fixedly provided with two fixed plates, and a rotating locking sleeve is provided between the two fixed plates. One end of the rotating locking sleeve is fixedly connected to the fixed plate by a bolt. Among them, a material membrane device for treating leachate membrane filtration concentrate of the utility model ensures the treatment effect of the landfill leachate concentrate after nanofiltration treatment through the mutual cooperation of various structures, greatly improves the clear liquid collection amount, reduces the concentrated liquid production amount, and at the same time, realizes the rapid connection of the connection of the rolled material membrane assembly, and can also prevent the connection of the rolled material membrane assembly from falling off during the filtration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic structural diagram of a material membrane device for treating leachate and concentrate by membrane filtration provided by the present invention;

[0015] Figure 2 yes Figure 1 A schematic cross-sectional view of the internal structure of the pressure-resistant membrane shell is shown;

[0016] Figure 3 This is a schematic diagram of the material membrane structure in a material membrane device for treating leachate and concentrated liquid by membrane filtration provided by the utility model;

[0017] Figure 4This is a schematic diagram of the locking structure of a clear liquid collecting pipe and a connecting pipe in a material membrane device for treating leachate membrane filtration concentrate provided by the utility model;

[0018] Figure 5 yes Figure 4 A local enlarged schematic diagram of point A shown in FIG;

[0019] Figure 6 yes Figure 4 A front view of the rotation locking sleeve shown;

[0020] Figure 7 The utility model provides a schematic structural diagram of a clear liquid collecting pipe in a material membrane device for treating leachate membrane filtration concentrate.

[0021] Reference numerals:

[0022] 100, base; 110, pressure-resistant membrane housing; 120, nanofiltration concentrate tank; 130, clear liquid tank; 140, concentrated liquid tank; 150, water-stop seal ring; 160, intermediate water tank; 170, sealing end cap;

[0023] 200, rolled material membrane assembly; 210, material membrane; 220, clear liquid collection tube; 230, clear liquid collection tube end cap; 240, water receiving hole; 250, first section rolled material membrane assembly; 260, second section rolled material membrane assembly; 270, third section rolled material membrane assembly;

[0024] 300, connecting pipe; 310, locking rod; 320, rotation locking sleeve; 330, fixing plate;

[0025] 400, water production grid; 410, filter membrane; 420, water inlet grid;

[0026] 500, first water pump; 510, second water pump; 520, third water pump. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. It will be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, the drawings only show parts related to the present invention, rather than all structures. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] See also Figures 1 to 7 The utility model is a material membrane device for treating leachate membrane filtration concentrate, comprising: a base 100, a pressure-resistant membrane shell 110, a roll-type material membrane assembly 200 for filtration, a nanofiltration concentrate tank 120, a clear liquid tank 130 and a concentrated liquid tank 140, wherein the pressure-resistant membrane shell 110 is arranged on the base 100, the interior of the pressure-resistant membrane shell 110 is hollow, one end of the pressure-resistant membrane shell 110 is a water outlet end, and the other end of the pressure-resistant membrane shell 110 is a water inlet end, and both ends of the pressure-resistant membrane shell 110 are provided with sealing end covers 170, and the roll-type material membrane assembly 200 is provided with a sealing end cover 170, and the roll-type material membrane assembly 200 is provided with a sealing end cover 170, and the roll-type material membrane assembly 200 is provided with a nanofiltration concentrate tank 120, a clear liquid tank 130 and a concentrated liquid tank 140, and the pressure-resistant membrane shell 1 ... pressure-resistant membrane shell 110 0 is arranged inside the pressure-resistant membrane shell 110, and the number of the rolled material membrane components 200 is three, namely the first-section rolled material membrane component 250, the second-section rolled material membrane component 260 and the third-section rolled material membrane component 270. The rolled material membrane components 200 are connected in pairs, and a connecting pipe 300 is provided at the connection. The nanofiltration concentrate tank 120 is connected to the water inlet end of the pressure-resistant membrane shell 110, the clear liquid tank 130 is connected to the water outlet end of the pressure-resistant membrane shell 110, and the concentrated liquid tank 140 is connected to the water outlet end of the pressure-resistant membrane shell 110.

[0030] The base 100 serves to fix and support the pressure-resistant membrane shell 110 , and the sealing end cover 170 serves to seal the pressure-resistant membrane shell 110 .

[0031] Furthermore, a water-stop sealing ring 150 is provided inside the pressure-resistant membrane shell 110 , and the water-stop sealing ring is provided at the connecting pipe 300 .

[0032] The water-stop seal ring 150 prevents the liquid at the connecting pipe 300 from contaminating and corroding the pressure-resistant membrane housing 110 .

[0033] Furthermore, the roll-type material membrane assembly 200 includes: a clear liquid collection tube 220, a material membrane 210 and a clear liquid collection tube end cover 230, the clear liquid collection tube end cover 230 is arranged at one end of the clear liquid collection tube 220, and a plurality of water receiving holes 240 are opened on the clear liquid collection tube 220, and the structure around the water receiving holes 240 is inclined. The material membrane 210 is wrapped around the clear liquid collection tube 220, and the material membrane 210 has a spiral structure. The material membrane 210 consists of a five-layer structure, the first and fifth layers of the material membrane 210 are water production grids 400, the second and fourth layers of the material membrane 210 are filter membranes 410, and the third layer of the material membrane 210 is a water inlet grid 420, and the two ends of the water inlet grid 420 are bonded to the two ends of the filter membrane 410, and the water production grid 400 can only flow clear liquid.

[0034] Among them, the water inlet grid 420 circulates liquid, and the clear liquid can enter the water production grid 400 through the filter membrane 410. The material membrane 210 is wrapped on the clear liquid collection tube 220, and the tangential structure of the material membrane 210 is spiral. The clear liquid enters the clear liquid collection tube 220 along the spiral water production grid 400. Since the structure around the water receiving hole 240 is inclined, the clear liquid collection speed can be improved. Since the water inlet grid 420 is bonded to the two ends of the filter membrane 410, the concentrated liquid can only flow forward tangentially along the water inlet grid 420.

[0035] Furthermore, a first water pump 500 is provided at the connection between the nanofiltration concentrate tank 120 and the water inlet end of the pressure-resistant membrane shell 110, the first-section rolled material membrane assembly 250 is connected to the third-section rolled material membrane assembly 270, and a second water pump 510 and an intermediate water tank 160 are provided at the connection, the second-section rolled material membrane assembly 260 is connected to the nanofiltration concentrate tank 120, and a third water pump 520 is provided at the connection.

[0036] Among them, the first water pump 500 pressurizes and transports the nanofiltration concentrate to the pressure-resistant membrane shell 110, and the clear liquid filtered by the first-section roll material membrane assembly 250 is pumped into the intermediate water tank 160 by the second water pump 510, and then enters the third-section roll material membrane assembly 270. The clear liquid flows into the clear liquid pool 130 through the clear liquid collection pipe 220, and the concentrated liquid flows into the concentrated liquid pool 140. The clear liquid filtered by the second-section roll material membrane assembly 260 is pumped into the nanofiltration concentrate tank 120 by the third water pump 520 to preliminarily dilute the nanofiltration concentrate and speed up the filtration speed of the roll material membrane assembly 200.

[0037] Furthermore, a locking rod 310 is fixedly provided on the outer side surface of the connecting tube 300, and two fixing plates 330 are fixedly provided on the end cover 230 of the clear liquid collection tube. A rotating locking sleeve 320 is provided between the fixing plates 330, and the rotating locking sleeve 320 is concave in shape. The opening of the rotating locking sleeve 320 is a barb structure, and one end of the rotating locking sleeve 320 is fixedly connected to the fixing plate 330 by bolts.

[0038] Among them, the rotating locking sleeve 320 can rotate between the two fixed plates 330, and the movable locking rod 310 plays a role in rotating the rotating locking sleeve 320. The locking rod 310 enters the internal structure of the rotating locking sleeve 320. The barb can hinder the movement of the locking rod 310, achieve self-locking, and prevent the connection of the rolled material membrane assembly 200 from falling off during the filtration process.

[0039] When the user needs to filter the nanofiltration concentrate through a material membrane device for treating leachate membrane filtration concentrate of the utility model, first, the first water pump 500 pressurizes the nanofiltration concentrate in the nanofiltration concentrate tank 120 and transports it to the pressure-resistant membrane shell 110, and the nanofiltration concentrate enters the first section of the roll material membrane assembly 250, and the filtered clear liquid is pumped into the intermediate water tank 160 by the second water pump 510, and then enters the third section of the roll material membrane assembly 270, and the clear liquid flows into the clear night pool 130 through the clear liquid collection pipe 220, and the concentrated liquid flows into the clear night pool 130. The filter element 520 is used to filter the nanofiltration liquid into the concentrate tank 140, and the clear liquid filtered out in the second stage is pumped into the nanofiltration concentrate tank 120 by the third water pump 520, so as to preliminarily dilute the nanofiltration concentrate in the nanofiltration concentrate tank 120 and increase the filtration speed. The utility model is a material membrane device for treating leachate membrane filtration concentrate, which ensures the treatment effect of the landfill leachate concentrate after nanofiltration treatment through the mutual cooperation of various structures, greatly improves the amount of clear liquid collected, reduces the amount of concentrated liquid generated, and also prevents the connection of the roll material membrane assembly 200 from falling off during the filtration process.

[0040] The above description is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A material membrane device for treating leachate membrane filtration concentrate, characterized in that: include: base; A pressure-resistant membrane shell, wherein the pressure-resistant membrane shell is arranged on the base, one end of the pressure-resistant membrane shell is a water inlet end, the other end of the pressure-resistant membrane shell is a water outlet end, and the interior of the pressure-resistant membrane shell is hollow; A rolled material membrane assembly for filtration, wherein the rolled material membrane assembly is arranged inside the pressure-resistant membrane shell, and the number of the rolled material membrane assembly is three, namely, a first-section rolled material membrane assembly, a second-section rolled material membrane assembly, and a third-section rolled material membrane assembly; a nanofiltration concentrated liquid tank connected to the water inlet end of the pressure-resistant membrane shell; a clear liquid tank connected to the third-section spiral material membrane assembly; A concentrated liquid pool is connected to the water outlet end of the pressure-resistant membrane shell.

2. A material membrane device for treating leachate and concentrate according to claim 1, characterized in that: The rolled material membrane components are connected in pairs, and a connecting pipe is provided at the connection point. The rolled material membrane components include: a clear liquid collection tube, a material membrane and a clear liquid collection tube end cover. The clear liquid collection tube end cover is arranged at one end of the clear liquid collection tube. A plurality of water receiving holes are opened on the clear liquid collection tube. The structure around the water receiving holes is inclined. The material membrane is wrapped around the clear liquid collection tube. The tangential structure of the material membrane is spiral. The material membrane consists of a five-layer structure. The first and fifth layers of the material membrane are water production grids, the second and fourth layers of the material membrane are filter membranes, and the third layer of the material membrane is a water inlet grid. The two ends of the water inlet grid are bonded to the two ends of the filter membrane. The water production grid can only flow clear liquid.

3. A material membrane device for treating leachate membrane filtration concentrate according to claim 2, characterized in that: A locking rod is fixedly provided on the outer surface of the connecting pipe, and two fixing plates are fixedly provided on the end cover of the clear liquid collection pipe. A rotation locking sleeve is provided between the fixing plates, and the rotation locking sleeve is concave-shaped. A barb structure is provided at the opening of the rotation locking sleeve. One end of the rotation locking sleeve is fixedly connected to the fixing plate by a bolt.

4. The material membrane device for treating leachate and concentrate according to claim 1, characterized in that: A water-stop sealing ring is provided inside the pressure-resistant membrane shell, sealing end covers are provided at both ends of the pressure-resistant membrane shell, and a first water pump is provided at the connection between the water inlet end of the pressure-resistant membrane shell and the nanofiltration concentrated liquid tank.

5. The material membrane device for treating leachate and concentrate by membrane filtration according to claim 1, characterized in that: A first water pump is provided at the connection between the nanofiltration concentrate tank and the water inlet end of the pressure-resistant membrane shell. The first-section rolled material membrane assembly is connected to the third-section rolled material membrane assembly, and a second water pump and an intermediate water tank are provided at the connection. The second-section rolled material membrane assembly is connected to the nanofiltration concentrate tank, and a third water pump is provided at the connection.

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