CN210419546U

CN210419546U - Seawater desalination pretreatment device

Info

Publication number: CN210419546U
Application number: CN201921149215.4U
Authority: CN
Inventors: 陈春跃
Original assignee: Suzhou Friends Of Blue Energy Purification Technology Co ltd
Current assignee: Suzhou Friends Of Blue Energy Purification Technology Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-28
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a seawater desalination pre treatment facility, including the intake pump, silt filter equipment, the flocculation device, first filter equipment and second filter equipment, silt filter equipment includes first barrel and the silt filter screen of setting in first barrel, first barrel internal part is into the district of intaking, the silt settling zone, the drainage area, the silt filter screen sets up between drainage area and the district of intaking, separate through the separate layer between silt settling zone and the drainage area, the flocculation device is connected with silt filter equipment, the flocculation device is connected with first filter equipment, second filter equipment is connected with first filter equipment, first filter equipment includes first filter core, second filter equipment includes the second filter core. The utility model provides a seawater desalination pre treatment facility, it has lightened first filter equipment's pressure through silt filter equipment to reduced the number of times that first filter core washed and changed, the cost is reduced, the maintenance of being convenient for simultaneously.

Description

Seawater desalination pretreatment device

Technical Field

The utility model relates to a sea water desalination field especially relates to a sea water desalination pre treatment facility.

Background

As the natural supply of fresh water is limited, shortage of fresh water resources is becoming a very urgent problem in many parts of the world. The seawater desalination technology for producing fresh water by seawater desalination is an important means for relieving the lack of fresh water. Common seawater desalination methods include distillation, freezing, and reverse osmosis. The reverse osmosis method is also called an excess rate method, and is a method of separating fresh water from salt by preventing the salt from permeating through a multilayer film module. The method realizes functions through the high-pressure pump and the membrane module, has small occupied area, simple and convenient operation, no need of personnel for nursing, low manufacturing cost, is the most excellent seawater desalination method recognized at present, and is widely applied to various production and living fields. Seawater is a complex system, especially in the sea area near the land, and contains a large amount of colloids, suspended particles, microorganisms, bacteria, dissolved organic matter and inorganic matter. In the reverse osmosis seawater desalination process, a large amount of colloid and suspended particles can block pipelines to cause pollution of membrane elements, the membrane elements are corroded by microorganisms and bacteria, and residues of the membrane elements can be deposited on the surface of the membrane to cause the pollution of the membrane. Therefore, pretreatment before seawater desalination is particularly important. However, since the components in seawater are complex, the seawater near the land contains a large amount of silt, and the pressure of a filter element is high during pretreatment before seawater desalination, and the filter element is easily blocked by the silt, frequent back washing or filter element replacement is required, so that the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a seawater desalination pre treatment equipment, it has lightened first filter equipment's pressure through silt filter equipment to reduce the number of times that first filter core washed and changed, solved the higher problem of cost.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a seawater desalination pretreatment device comprises a water inlet pump, a sediment filtering device, a flocculation device, a first filtering device and a second filtering device, wherein the sediment filtering device comprises a first barrel and a sediment filter screen arranged in the first barrel, the water inlet pump is connected with the top of the first barrel through a water inlet pipe, the inner part of the first barrel is a water inlet area, a sediment settling area and a water drainage area, the water inlet area is arranged above the sediment settling area and the water drainage area, the sediment filter screen is arranged between the water drainage area and the water inlet area, the sediment settling area and the water drainage area are separated by a separation layer, the flocculation device is connected with the sediment filtering device through a pipeline and communicated with the water drainage area, the flocculation device is connected with the first filtering device through a pipeline, the second filtering device is connected with the first filtering device through a pipeline, the first filter device includes a first filter element and the second filter device includes a second filter element.

Preferably, the silt filter screen sets up just the silt filter screen is close to one side downward sloping in silt settling zone.

Preferably, a supporting piece for supporting the sediment filter screen is arranged below the sediment filter screen.

Preferably, the bottom of the first cylinder is provided with a sewage draining outlet which is communicated with the sediment settling zone.

Preferably, the flocculation device comprises a second cylinder and a flocculant adding tank arranged outside the second cylinder, and the flocculant adding tank is connected with the second cylinder through a pipeline.

Preferably, the pore size of the first filter element is 5 microns, and the pore size of the second filter element is 1 micron.

Preferably, the first filtering device further comprises a third cylinder, a first partition plate is arranged in the third cylinder, the third cylinder is divided into an upper area and a lower area by the first partition plate, the first filter element is arranged in the upper area of the third cylinder, and the first filter element is communicated with the lower area of the third cylinder.

Preferably, the second filtering device further comprises a fourth cylinder, a second partition plate is arranged in the fourth cylinder, the fourth cylinder is divided into an upper area and a lower area by the second partition plate, the second filter element is arranged in the upper area of the fourth cylinder, and the second filter element is communicated with the lower area of the fourth cylinder.

Preferably, the lower area of the third cylinder is connected with the lower area of the fourth cylinder through a pipeline, and the fourth cylinder is provided with a water outlet communicated with the lower area of the fourth cylinder.

As preferred, the one end setting of inlet tube is in just be located in the district of intaking the top of silt filter screen, the inlet tube is located the one end in district of intaking is connected with the horn mouth.

The utility model has the advantages that: the utility model provides a seawater desalination pre treatment facility, it has lightened first filter equipment's pressure through silt filter equipment to reduced the number of times that first filter core washed and changed, the cost is reduced, the maintenance of being convenient for simultaneously.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the silt filtering apparatus of the present invention;

FIG. 3 is a schematic structural view of the flocculation device of the present invention;

fig. 4 is a schematic structural diagram of a first filtering device of the present invention;

fig. 5 is a schematic structural view of a second filtering device according to the present invention;

wherein: 1. the water inlet pump comprises a water inlet pump, 2, a sediment filtering device, 201, a first cylinder, 202, a sediment filtering screen, 3, a flocculating device, 301, a second cylinder, 302, a flocculating agent adding groove, 4, a first filtering device, 401, a third cylinder, 402, a first filter core, 5, a second filtering device, 501, a fourth cylinder, 502, a second filter core, 6, a water inlet pipe, 7, a horn mouth, 8, a water inlet area, 9, a sediment settling area, 10, a water discharging area, 11, a separating layer, 12, a supporting piece, 13, a sewage outlet, 14, a first separating plate, 15, a second separating plate and 16, and a water outlet.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the embodiment provides a seawater desalination pretreatment apparatus, which includes a water inlet pump 1, a silt filtering apparatus 2, a flocculation apparatus 3, a first filtering apparatus 4, and a second filtering apparatus 5, which are sequentially arranged from left to right. The water inlet pump 1, the sediment filtering device 2, the flocculation device 3, the first filtering device 4 and the second filtering device 5 are sequentially connected in series.

Referring to fig. 2, the silt filter 2 filters silt particles having a large particle size in the seawater. Silt filter apparatus 2 includes first barrel 201 and silt filter screen 202 arranged in first barrel 201. The first cylinder 201 is internally divided into a water inlet area 8, a sediment settling area 9 and a water drainage area 10. The district 8 sets up in the top of sediment sedimentation district 9 and water drainage district 10, and sediment filter screen 202 sets up between water drainage district 10 and the district 8 of intaking, separates through separate layer 11 between sediment sedimentation district 9 and the water drainage district 10. The water inlet pump 1 is connected with the top of the first cylinder 201 through a water inlet pipe 6. The right end of the water inlet pipe 6 is arranged in the water inlet area 8 and is positioned above the sediment filter screen 202. The one end that inlet tube 6 is located intake zone 8 is connected with horn mouth 7, so in order to reduce the sea water velocity of flow, avoids the sea water impact silt filter screen 202 that carries with impurity to make the silt filter screen damage. In order to facilitate the silt to fall into a silt settling zone. The silt filter screen 202 is arranged obliquely and one side of the silt filter screen 202 close to the silt settling zone 9 is inclined downwards. The bottom of the first barrel 201 is provided with a sewage outlet 13, and the sewage outlet 13 is communicated with the sediment settling zone 9, so that sediment settled in the sediment filtering device 2 can be conveniently removed. The support piece 12 that supports sediment filter screen 202 is provided with to the below of sediment filter screen 202, and support piece 12's effect is support sediment filter screen 202, prevents that sediment filter screen 202 from being damaged by the punching press of sediment. The support member 12 includes a connection bearing ring connected to the inner wall of the first cylinder 201 and the separation layer 11, and a cross support rod disposed in the connection bearing ring.

Referring to fig. 3, the flocculation apparatus 3 is used to remove suspended particles, bacteria and large organic substances from seawater. The flocculation device 3 is connected with the sediment filtering device 2 through a pipeline, and the flocculation device 3 is communicated with the drainage area 10. The flocculation apparatus 3 includes a second cylinder 301 and a flocculant addition tank 302 provided outside the second cylinder 301. The flocculant addition tank 302 is connected to the second cylinder 301 through a pipe. Wherein the end of the pipe for connection to the silt filter apparatus 2 is lower than the end of the pipe for connection to the first filter apparatus 4. An iron salt flocculant is stored in the flocculant addition tank 302.

Referring to fig. 4 and 5, the first filter device 4 includes a third cylinder 401 and a first filter cartridge 402. A first partition plate 14 is arranged in the third cylinder 401, and the third cylinder 401 is divided into an upper area and a lower area by the first partition plate 14. A first filter element 402 is disposed within the upper region of the third cylinder 401. The bottom of the first cartridge 402 is connected to the first partition 14. A water passage is formed in the first filter element 402, and the interior of the first filter element 402 communicates with the lower region of the third cylinder 401. The flocculation device 3 is connected with the upper area of the third cylinder 401 in the first filtering device 4 through a pipeline.

The second filter device 5 comprises a fourth cylinder 501 and a second filter cartridge 502. A second partition 15 is provided in the fourth cylinder 501, and the second partition 15 divides the fourth cylinder 501 into an upper area and a lower area. A second cartridge 502 is disposed within the upper region of the fourth cylinder 501. Second cartridge 502 is connected to second separator 15. A water passage is arranged in the second filter element 502, and the inside of the second filter element 502 is communicated with the lower area of the fourth cylinder 501. The lower region of the third cylinder 401 is connected with the lower region of the fourth cylinder 501 through a pipe, and the fourth cylinder 501 is provided with a water outlet 16 communicated with the lower region of the fourth cylinder 501. The first filter element 402 has a pore size of 5 microns and the second filter element 502 has a pore size of 1 micron.

The working process of the seawater desalination pretreatment equipment comprises the following steps:

(1) the seawater is introduced into the silt filtering device 2 under the suction action of the water inlet pump 1.

(2) Under the action of the silt filter screen 202, large-particle silt in seawater is separated, the separated silt enters the silt settling zone 9, and the seawater enters the flocculation device 3 through the drainage zone 10.

(3) The seawater in the flocculation device 3 is subjected to the action of a flocculant to deposit part of suspended particles and bacteria, and then enters the first filtration device 4.

(4) Seawater enters the first filter element 402 from the upper region of the third cylinder 401, particulate impurities are blocked under the filtering action of the filter screen of the first filter element 402, and the seawater flows to the lower region of the third cylinder 401 from the first filter element 402 and then enters the third filtering device 5.

(5) Seawater enters the second filter element 502 from the upper area of the fourth cylinder 501, fine particle impurities are blocked under the filtering action of the filter screen of the second filter element 502, and the seawater flows to the lower area of the fourth cylinder 501 from the second filter element 502, so that all seawater desalination pretreatment steps are completed. The pretreated seawater is discharged from the water outlet 16.

Because silt filter equipment 2 and flocculation device 3's prefilter, bigger granule is got rid of in the sea water, and the sea water that gets into in first filter equipment 4 only has less granule to reduced first filter equipment 4's filtration pressure, thereby reduced first filter core 402 and washed and the number of times of changing. Due to the two filtrations of the first and

second filtration devices

4 and 5, the particles in the seawater are completely removed.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The seawater desalination pretreatment equipment is characterized by comprising a water inlet pump (1), a sediment filtering device (2), a flocculation device (3), a first filtering device (4) and a second filtering device (5), wherein the sediment filtering device (2) comprises a first barrel (201) and a sediment filter screen (202) arranged in the first barrel (201), the water inlet pump (1) is connected with the top of the first barrel (201) through a water inlet pipe (6), the first barrel (201) is internally divided into a water inlet area (8), a sediment settling area (9) and a water drainage area (10), the water inlet area (8) is arranged above the sediment settling area (9) and the water drainage area (10), the sediment filter screen (202) is arranged between the water drainage area (10) and the water inlet area (8), the sediment settling area (9) and the water drainage area (10) are separated by a separation layer (11), flocculation device (3) with silt filter equipment (2) pass through the pipe connection just flocculation device (3) with drainage area (10) communicate with each other, flocculation device (3) with first filter equipment (4) pass through the pipe connection, second filter equipment (5) with first filter equipment (4) pass through the pipe connection, first filter equipment (4) include first filter core (402), second filter equipment (5) include second filter core (502).

2. The seawater desalination pretreatment apparatus of claim 1, wherein the silt filter (202) is disposed in an inclined manner and one side of the silt filter (202) close to the silt settling zone (9) is inclined downward.

3. The seawater desalination pretreatment apparatus of claim 1 or 2, wherein a support member (12) for supporting the silt filter screen (202) is disposed below the silt filter screen (202).

4. The seawater desalination pretreatment equipment of claim 1, wherein a sewage outlet (13) is arranged at the bottom of the first cylinder (201), and the sewage outlet (13) is communicated with the sediment settling zone (9).

5. The seawater desalination pretreatment apparatus according to claim 1, wherein the flocculation device (3) comprises a second cylinder (301) and a flocculant addition tank (302) disposed outside the second cylinder (301), and the flocculant addition tank (302) is connected to the second cylinder (301) through a pipe.

6. The seawater desalination pretreatment apparatus of claim 1, wherein the first filter element (402) has a pore size of 5 microns and the second filter element (502) has a pore size of 1 micron.

7. The seawater desalination pretreatment apparatus according to claim 1, wherein the first filtering device (4) further comprises a third cylinder (401), a first partition plate (14) is disposed in the third cylinder (401), the third cylinder (401) is divided into an upper region and a lower region by the first partition plate (14), the first filter element (402) is disposed in the upper region of the third cylinder (401), and the first filter element (402) is communicated with the lower region of the third cylinder (401).

8. The seawater desalination pretreatment apparatus according to claim 7, wherein the second filtering device (5) further comprises a fourth cylinder (501), a second partition plate (15) is disposed in the fourth cylinder (501), the fourth cylinder (501) is divided into an upper region and a lower region by the second partition plate (15), the second filter element (502) is disposed in the upper region of the fourth cylinder (501), and the second filter element (502) is communicated with the lower region of the fourth cylinder (501).

9. The seawater desalination pretreatment apparatus according to claim 8, wherein a lower region of the third cylinder (401) is connected with a lower region of the fourth cylinder (501) through a pipeline, and a water outlet (16) communicated with the lower region of the fourth cylinder (501) is arranged on the fourth cylinder (501).

10. The seawater desalination pretreatment apparatus of claim 1, wherein one end of the water inlet pipe (6) is disposed in the water inlet area (8) and above the sediment filter screen (202), and one end of the water inlet pipe (6) located in the water inlet area (8) is connected with a bell mouth (7).