CN209923091U

CN209923091U - A ultrafiltration system for handling low turbid water

Info

Publication number: CN209923091U
Application number: CN201921704638.8U
Authority: CN
Inventors: 黄国强; 朱云荣; 卢志伟; 严彬
Original assignee: China Huadian Engineering Group Co Ltd
Current assignee: China Huadian Engineering Group Co Ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-01-10
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses an ultrafiltration system for handling low turbid water, connect in raw water desalination filtration system, an ultrafiltration system for handling low turbid water includes that the first group one-level strains turbid device, the turbid device is strained to the second group one-level, the first group second grade ultrafiltration device, the second group second grade ultrafiltration device, the turbid device is strained to the first group one-level and the second group one-level is strained turbid device and is connected with raw water desalination filtration system through the delivery pipe, the first group one-level is strained turbid device and is connected with the first group second grade ultrafiltration device through A first clear water pipe, the turbid device is strained to the second group one-level is connected with the second group second grade ultrafiltration device through B first clear water pipe, the first group second grade ultrafiltration device and the second group second grade ultrafiltration device are all connected with cleaning system through the trunk; first group's one-level is strained turbid device and second group's one-level and is strained turbid device and all include one-level inlet tube, one-level outlet pipe and N disc filter, and N ≧ 4, for parallelly connected setting between the N disc filter, and N disc filter connects respectively in the one-level inlet tube, and N disc filter connects respectively in the one-level outlet pipe.

Description

A ultrafiltration system for handling low turbid water

Technical Field

The utility model relates to a water treatment facilities field, especially an ultrafiltration system for handling low turbid water.

Background

In order to remove microorganisms in seawater, conventional seawater desalination is usually performed by pretreatment through an integrated purification device to remove microorganisms in seawater, and the pretreated water is then subjected to reverse osmosis treatment. The conventional seawater desalination method is suitable for seawater with high turbidity and relatively stable conductivity change, and low-turbidity water with unusual conductivity change (the conductivity of raw water is usually 40000us/cm²～

75000us/cm²Irregular variation), the conventional integrated water purification apparatus cannot effectively remove colloidal particles in low-turbidity water.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultrafiltration system for handling low turbid water can effectively get rid of the colloidal particle in the low turbid water.

In order to solve the technical problem, the utility model discloses a following technical scheme: an ultrafiltration system for treating low-turbidity water is connected to a raw water desalination and filtration system, and comprises a first group of primary turbidity filtering devices, a second group of primary turbidity filtering devices, a first group of secondary ultrafiltration devices and a second group of secondary ultrafiltration devices, wherein the first group of primary turbidity filtering devices and the second group of primary turbidity filtering devices are connected with the raw water desalination and filtration system through water supply pipes; first group's one-level is strained turbid device and second group's one-level and is strained turbid device and all include one-level inlet tube, one-level outlet pipe and N disc filter, and N ≧ 4, for parallelly connected setting between the N disc filter, and N disc filter connects respectively in the one-level inlet tube, and N disc filter connects respectively in the one-level outlet pipe.

In the ultrafiltration system for treating low turbidity water, the main pipeline is provided with the first pipe orifice and the second pipe orifice, the first group of secondary ultrafiltration devices are connected with the main pipeline through the first pipe orifice, and the second group of secondary ultrafiltration devices are connected with the main pipeline through the second pipe orifice.

In the ultrafiltration system for treating low turbidity water of the aforementioned kind, the first and second sets of primary turbidimetric devices each include an in situ controller, and the N disc filters are each connected to the in situ controller.

In the foregoing ultrafiltration system for treating low-turbidity water, the first group of secondary ultrafiltration devices and the second group of secondary ultrafiltration devices both include a secondary water inlet pipe, a secondary water outlet pipe and a plurality of ultrafiltration membrane modules, the plurality of ultrafiltration membrane modules are arranged in parallel, the plurality of ultrafiltration membrane modules are respectively connected to the secondary water inlet pipe, and the plurality of ultrafiltration membrane modules are respectively connected to the secondary water outlet pipe.

In the foregoing ultrafiltration system for treating low turbid water, the cleaning system includes one-level reverse osmosis feed pump, chemical cleaning device, ultrafiltration backwash device, product water tank and backwash water pump, chemical cleaning device sets up between one-level reverse osmosis feed pump and ultrafiltration backwash device, ultrafiltration backwash device is connected with the delivery port of producing the water tank, it is connected with first group's second grade ultrafiltration device and second group's second grade ultrafiltration device through the trunk line to produce the water tank, backwash water pump is connected with sea water reverse osmosis processing system, backwash water pump still through first backwash water pipe with produce the water tank and be connected.

In the foregoing ultrafiltration system for treating low turbidity water, the chemical cleaning device includes a sodium hypochlorite dosing device, an alkali dosing device and an acid dosing device, the sodium hypochlorite dosing device is connected to the cleaning pipeline between the first-stage reverse osmosis water feed pump and the ultrafiltration backwashing device, the alkali dosing device is connected to the cleaning pipeline between the first-stage reverse osmosis water feed pump and the ultrafiltration backwashing device, and the acid dosing device is connected to the cleaning pipeline between the first-stage reverse osmosis water feed pump and the ultrafiltration backwashing device.

In the ultrafiltration system for treating low turbidity water, the membrane precision of the ultrafiltration membrane component is 0.0001 micron.

Compared with the prior art, the utility model discloses can effectively reduce the turbidity of low turbid water, strain the large granule impurity in the low turbid water of turbid device preliminary filtration through first group one-level and second group one-level, further get rid of low turbid aquatic colloidal particle through first group second grade ultrafiltration device and second group second grade ultrafiltration device again, obtain the water that the turbidity is less than 0.4NTU, realize basically getting rid of aquatic colloidal particle's purpose.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention without undue limitation of the invention. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a first set of first-stage turbidity filtering devices of the present invention;

fig. 3 is a schematic structural diagram of the first group of two-stage ultrafiltration devices of the present invention.

Reference numerals: 1-a first group of first-stage turbidity filtering devices, 2-a second group of first-stage turbidity filtering devices, 3-a first group of second-stage ultrafiltration devices, 4-a second group of second-stage ultrafiltration devices, 5-a water supply pipe, 6-a primary water purification pipe, 7-B primary water purification pipe, 8-a main pipeline, 9-a raw water desalination filtration system, 10-a cleaning system, 11-a disc filter, 12-a first-stage water inlet pipe, 13-a first-stage water outlet pipe, 14-a second-stage water inlet pipe, 15-an ultrafiltration membrane component, 16-a second-stage water outlet pipe, 17-a water production tank, 18-a backwashing water pump, 19-a first-stage reverse osmosis water supply pump, 20-a chemical cleaning device, 21-a sodium hypochlorite dosing device, 22-an alkali dosing device, 23, 25-ultrafiltration backwashing device and 27-second backwashing water pipe.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Detailed Description

In order to make the technical solution of the present invention better understood, the following description is given with reference to the accompanying drawings in the embodiments of the present invention, and the technical solution in the embodiments of the present invention is clearly and completely described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Embodiment 1 of the utility model: an ultrafiltration system for treating low-turbidity water is connected to a raw water desalination and filtration system 9 and comprises a first group of first-stage turbidity filtering devices 1, a second group of first-stage turbidity filtering devices 2, a first group of second-stage ultrafiltration devices 3 and a second group of second-stage ultrafiltration devices 4, wherein the first group of first-stage turbidity filtering devices 1 and the second group of first-stage turbidity filtering devices 2 are connected with the raw water desalination and filtration system 9 through water supply pipes 5, the first group of first-stage turbidity filtering devices 1 are connected with the first group of second-stage ultrafiltration devices 3 through an A primary water purification pipe 6, the second group of first-stage turbidity filtering devices 2 are connected with the second group of second-stage ultrafiltration devices 4 through a B primary water purification pipe 7, and the first group of second-stage ultrafiltration devices 3 and the second group of second-stage ultrafiltration devices 4 are both connected with; the first group of the first-stage turbidity filtering device 1 and the second group of the first-stage turbidity filtering device 2 comprise a first-stage water inlet pipe 12, a first-stage

water outlet pipe

13 and 6 disc filters 11, the 6 disc filters are arranged in parallel, the 6 disc filters are respectively connected to the first-stage water inlet pipe 12, and the 6 disc filters are respectively connected to the first-stage water outlet pipe 13.

Embodiment 2 of the utility model: an ultrafiltration system for treating low-turbidity water is connected to a raw water desalination and filtration system 9 and comprises a first group of first-stage turbidity filtering devices 1, a second group of first-stage turbidity filtering devices 2, a first group of second-stage ultrafiltration devices 3 and a second group of second-stage ultrafiltration devices 4, wherein the first group of first-stage turbidity filtering devices 1 and the second group of first-stage turbidity filtering devices 2 are connected with the raw water desalination and filtration system 9 through water supply pipes 5, the first group of first-stage turbidity filtering devices 1 are connected with the first group of second-stage ultrafiltration devices 3 through an A primary water purification pipe 6, the second group of first-stage turbidity filtering devices 2 are connected with the second group of second-stage ultrafiltration devices 4 through a B primary water purification pipe 7, and the first group of second-stage ultrafiltration devices 3 and the second group of second-stage ultrafiltration devices 4 are both connected with; the first group of one-stage turbidity filtering device 1 and the second group of one-stage turbidity filtering device 2 comprise a one-stage water inlet pipe 12, a one-stage

water outlet pipe

13 and 8 disc filters 11, the 8 disc filters are arranged in parallel, the 8 disc filters are respectively connected to the one-stage water inlet pipe 12, and the 8 disc filters are respectively connected to the one-stage water outlet pipe 13. Further, be provided with first mouth of pipe and second mouth of pipe on the trunk line 8, first group second grade ultrafiltration device 3 is connected with trunk line 8 through first mouth of pipe, and second group second grade ultrafiltration device 4 is connected with trunk line 8 through the second mouth of pipe. Further, the first group of first-stage turbidity filtering devices 1 and the second group of first-stage turbidity filtering devices 2 respectively comprise an on-site controller, and the N disc filters 11 are connected with the on-site controller. Further, the first group of second-stage ultrafiltration devices 3 and the second group of second-stage ultrafiltration devices 4 both comprise a second-stage water inlet pipe 14, a second-stage water outlet pipe 16 and 30 ultrafiltration membrane components 15, the 30 ultrafiltration membrane components 15 are arranged in parallel, the 30 ultrafiltration membrane components 15 are respectively connected to the second-stage water inlet pipe 14, and the 30 ultrafiltration membrane components 15 are respectively connected to the second-stage water outlet pipe 16.

Embodiment 3 of the utility model: an ultrafiltration system for treating low-turbidity water is connected to a raw water desalination and filtration system 9 and comprises a first group of first-stage turbidity filtering devices 1, a second group of first-stage turbidity filtering devices 2, a first group of second-stage ultrafiltration devices 3 and a second group of second-stage ultrafiltration devices 4, wherein the first group of first-stage turbidity filtering devices 1 and the second group of first-stage turbidity filtering devices 2 are connected with the raw water desalination and filtration system 9 through water supply pipes 5, the first group of first-stage turbidity filtering devices 1 are connected with the first group of second-stage ultrafiltration devices 3 through an A primary water purification pipe 6, the second group of first-stage turbidity filtering devices 2 are connected with the second group of second-stage ultrafiltration devices 4 through a B primary water purification pipe 7, and the first group of second-stage ultrafiltration devices 3 and the second group of second-stage ultrafiltration devices 4 are both connected with; first group's one-level is strained turbid device 1 and second group's one-level and is strained turbid device 2 and all include one-level inlet tube 12, one-

level outlet pipe

13 and 12 disc filter 11, N ≧ 12, for parallelly connected setting between 12 disc filter, and 12 disc filter connect respectively in one-

level inlet tube

12, and 12 disc filter connect respectively in one-level outlet pipe 13. Further, be provided with first mouth of pipe and second mouth of pipe on the trunk line 8, first group second grade ultrafiltration device 3 is connected with trunk line 8 through first mouth of pipe, and second group second grade ultrafiltration device 4 is connected with trunk line 8 through the second mouth of pipe. Further, the first group of first-stage turbidity filtering devices 1 and the second group of first-stage turbidity filtering devices 2 respectively comprise an on-site controller, and the 12 disc filters 11 are connected with the on-site controller. Further, the first group of second-stage ultrafiltration devices 3 and the second group of second-stage ultrafiltration devices 4 both comprise a second-stage water inlet pipe 14, a second-stage water outlet pipe 16 and 60 ultrafiltration membrane components 15, the 60 ultrafiltration membrane components 15 are arranged in parallel, the 60 ultrafiltration membrane components 15 are respectively connected to the second-stage water inlet pipe 14, the 60 ultrafiltration membrane components 15 are respectively connected to the second-stage water outlet pipe 16, the membrane precision of the ultrafiltration membrane components 15 is 0.0001 micron, and colloid particles and/or organic matters can be effectively filtered.

Further, cleaning system 10 includes one-level reverse osmosis feed pump 19, chemical cleaning device 20, ultrafiltration backwash device 25, produce water tank 17 and backwash water pump 18, chemical cleaning device 20 sets up between one-level reverse osmosis feed pump 19 and ultrafiltration backwash device 25, ultrafiltration backwash device 25 is connected with the delivery port of producing water tank 17, it is connected with first group second grade ultrafiltration device 3 and second group second grade ultrafiltration device 4 through trunk line 8 to produce water tank 17, backwash water pump 18 is connected with sea water reverse osmosis treatment system, backwash water pump 18 still is connected with production water tank 17 through first backwash water pipe 26.

Chemical cleaning device 20 includes sodium hypochlorite charge device 21, alkali charge device 22 and sour charge device 23, and sodium hypochlorite charge device 21 is connected on the washing pipeline 24 between one-level reverse osmosis feed pump 19 and ultrafiltration backwash device 25, and alkali charge device 22 is connected on the washing pipeline 24 between one-level reverse osmosis feed pump 19 and ultrafiltration backwash device 25, and sour charge device 23 is connected on the washing pipeline 24 between one-level reverse osmosis feed pump 19 and ultrafiltration backwash device 25.

The utility model discloses a working process:

the low-turbidity water discharged from the raw water desalination filtration system 9 is conveyed to a first group of first-stage turbidity filtering devices 1 and/or a second group of first-stage turbidity filtering devices 2 through a water supply pipe 5, large-particle impurities in the low-turbidity water are primarily filtered through the first group of first-stage turbidity filtering devices 1 and/or the second group of first-stage turbidity filtering devices 2, so that water with the turbidity of less than 2NTU is obtained, the water with the turbidity of less than 2NTU discharged from the first group of first-stage turbidity filtering devices 1 is conveyed to a first group of second-stage ultrafiltration devices 3 through an A primary water purification pipe 6, the water with the turbidity of less than 2NTU discharged from the second group of first-stage turbidity filtering devices 2 is conveyed to a second group of second-stage ultrafiltration devices 4 through a B primary water purification pipe 7, and the water with the turbidity of less than 2U is further filtered through the first group of second-stage ultrafiltration devices 3 and/or the second group of second-stage ultrafiltration. The water with turbidity less than 0.4NTU discharged from the first group of secondary ultrafiltration devices 3 flows back to the water production tank 17 of the cleaning system 10 through the main pipeline 8, the water in the water production tank 17 enters the ultrafiltration backwashing device 25 through the first backwashing water pipe 26, and after the backwashing water pump 18 of the ultrafiltration backwashing device 25 is pressurized, the water is sent into the first group of secondary ultrafiltration devices 3 and/or the second group of secondary ultrafiltration devices 4 through the first-stage reverse osmosis water feed pump 19 and the second backwashing water pipe 27 so as to clean the ultrafiltration membrane component 15. The ultrafiltration membrane assemblies 15 in the first group of secondary ultrafiltration devices 3 and the second group of secondary ultrafiltration devices 4 are used for filtering water with turbidity less than 2NTU, and further obtaining water with turbidity less than 0.4 NTU.

Claims

1. An ultrafiltration system for treating low turbidity water is characterized in that the ultrafiltration system is connected with a raw water desalination and filtration system (9), the ultrafiltration system for treating the low-turbidity water comprises a first group of first-stage turbidity filtering devices (1), a second group of first-stage turbidity filtering devices (2), a first group of second-stage ultrafiltration devices (3) and a second group of second-stage ultrafiltration devices (4), the first group of first-stage turbidity filtering devices (1) and the second group of first-stage turbidity filtering devices (2) are connected with a raw water desalination and filtration system (9) through a water supply pipe (5), the first group of first-stage filtration devices (1) are connected with the first group of second-stage ultrafiltration devices (3) through an A primary water purification pipe (6), the second group of first-stage filtration devices (2) are connected with the second group of second-stage ultrafiltration devices (4) through a B primary water purification pipe (7), the first group of secondary ultrafiltration devices (3) and the second group of secondary ultrafiltration devices (4) are both connected with a cleaning system (10) through a main pipeline (8); turbid device (1) is strained to first group one-level and turbid device (2) is strained to second group one-level all include one-level inlet tube (12), one-level outlet pipe (13) and N disc filter (11), N ≧ 4, be parallelly connected setting between N disc filter, and N disc filter connect respectively in one-level inlet tube (12), and N disc filter connect respectively in one-level outlet pipe (13).

2. An ultrafiltration system for the treatment of low turbidity water according to claim 1, wherein said main conduit (8) is provided with a first orifice through which said first set of secondary ultrafiltration devices (3) is connected to said main conduit (8) and a second orifice through which said second set of secondary ultrafiltration devices (4) is connected to said main conduit (8).

3. An ultrafiltration system for the treatment of low turbidity water according to claim 2, wherein the first set of primary turbidity means (1) and the second set of primary turbidity means (2) each comprise an in-situ controller to which the N disc filters (11) are connected.

4. The ultrafiltration system for treating low turbidity water according to claim 3, wherein each of the first and second sets of secondary ultrafiltration devices (3, 4) comprises a secondary water inlet pipe (14), a secondary water outlet pipe (16) and a plurality of ultrafiltration membrane modules (15), the plurality of ultrafiltration membrane modules (15) are arranged in parallel, the plurality of ultrafiltration membrane modules (15) are respectively connected to the secondary water inlet pipe (14), and the plurality of ultrafiltration membrane modules (15) are respectively connected to the secondary water outlet pipe (16).

5. The ultrafiltration system for treating low turbidity water according to claim 1 or 4, wherein the cleaning system (10) comprises a primary reverse osmosis water feed pump (19), a chemical cleaning device (20), an ultrafiltration backwashing device (25), a water production tank (17) and a backwashing water pump (18), the chemical cleaning device (20) is arranged between the primary reverse osmosis water feed pump (19) and the ultrafiltration backwashing device (25), the ultrafiltration backwashing device (25) is connected with a water outlet of the water production tank (17), the water production tank (17) is connected with a first group of secondary ultrafiltration devices (3) and a second group of secondary ultrafiltration devices (4) through the main pipe (8), the backwashing water pump (18) is connected with a seawater reverse osmosis treatment system, and the backwashing water pump (18) is further connected with the water production tank (17) through a first backwashing water pipe (26).

6. The ultrafiltration system for treating low turbidity water according to claim 5, wherein said chemical cleaning device (20) comprises a sodium hypochlorite dosing device (21), an alkali dosing device (22) and an acid dosing device (23), said sodium hypochlorite dosing device (21) is connected to the cleaning pipe (24) between the primary reverse osmosis water feed pump (19) and the ultrafiltration backwash device (25), said alkali dosing device (22) is connected to the cleaning pipe (24) between the primary reverse osmosis water feed pump (19) and the ultrafiltration backwash device (25), and said acid dosing device (23) is connected to the cleaning pipe (24) between the primary reverse osmosis water feed pump (19) and the ultrafiltration backwash device (25).

7. An ultrafiltration system for the treatment of low turbidity water according to claim 4, wherein the membrane module (15) has a membrane accuracy of 0.0001 micron.