CN109381998A - A kind of reverse osmosis nanofiltration processing technique - Google Patents
A kind of reverse osmosis nanofiltration processing technique Download PDFInfo
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- CN109381998A CN109381998A CN201710677450.8A CN201710677450A CN109381998A CN 109381998 A CN109381998 A CN 109381998A CN 201710677450 A CN201710677450 A CN 201710677450A CN 109381998 A CN109381998 A CN 109381998A
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 29
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012545 processing Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 220
- 239000012267 brine Substances 0.000 claims abstract description 17
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 230000010287 polarization Effects 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims description 20
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000012528 membrane Substances 0.000 description 19
- 238000004140 cleaning Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 239000002455 scale inhibitor Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of reverse osmosis nanofiltration processing technique, including high-pressure pump, water inlet automatic valve 1, water inlet automatic valve 2, automatic valve 2 between automatic valve 1, section between section, concentrated water automatic valve 1,2, one sections of RO/NF putaminas of concentrated water automatic valve, one section of RO/NF film, two sections of RO/NF putaminas, two sections of RO/NF films, RO/NF film brine seal circle, produce water valve, produce water ga(u)ge, concentrated water valve, concentrated water flowmeter.RO/NF film brine seal circle is respectively mounted in each RO/NF film grooves on two sides.By automatically switching water flow water inlet direction, so that the heavier concentrated water side of putamina internal incrustation trend is become influent side, reduce the degree of concentration polarization, so that scaling tendency is eased, the fouling time is extended.By automatic switchover water flow water inlet direction, two sections of RO/NF system arrangements are not limited to, it can also one, three, four, five ... N sections of practical RO/NF system processing.The technology can improve the rate of recovery of RO/NF system operation to save reach water conservation, reduce the adding of antisludging agent, unit produces water energy saving, unit produces that water saves inflow, unit produces water and reduces concentrated water amount.
Description
Technical field
The invention patent belongs to reverse osmosis and nanofiltration membrane treatment technical field more particularly to high-recovery, high pollution reverse osmosis
Saturating and nanofiltration membrane treatment field.
Background technique
With country promulgate " water prevention and cure of pollution action plan " (ten, water), for respond government's energy-saving and emission-reduction call,
" zero-emission " or " near-zero release " is accomplished in many industries, the numerous and confused requirement in area.
Reverse osmosis and nanofiltration reaches its maturity by development in recent years, technology, but returns in some zero-emissions, middle water
With, fields such as wastewater treatment, high rigidity, high-recovery, high yield water rate, the application of reverse osmosis and Nanofiltration-membrane technique usually faces
The problem of operation stability, such as system are easy to produce the dirt of organic matter, microorganism, suspended matter, calcium ions and magnesium ions, silicon pollutant
It is stifled.
Reverse osmosis and nanofiltration membrane dirt is stifled to be generally required to restore its runnability by stop cleaning etc., is frequently cleaned past
The water time is effectively produced toward reverse osmosis membrane is influenced, it is influenced and produces aqueous energy such as salt rejection rate and producing water ratio, reverse osmosis and nanofiltration membrane is clear
It washes and often influences its service life, need to add a large amount of chemicals such as acid, alkali in reverse osmosis and nanofiltration membrane cleaning process,
Reverse osmosis and nanofiltration membrane etc. can generate cleaning waste water in the process of cleaning, and processing needs to increase cost.Part is reverse osmosis and nanofiltration
Film processing system because cleaning not in time or miss optimal clean opportunity cause its cleaning performance that cannot restore and must not be without
The case where replacing film device also happens occasionally.
Since part is reverse osmosis and nanofiltration membrane water inlet comparison of ingredients complexity is easy to produce dirty stifled, many designing units or use
Unit is to improve reverse osmosis and nanofiltration membrane stability and reduce its cleaning frequency, often leads to reverse osmosis and nanofiltration membrane production water
Amount and the rate of recovery are designed very low, and permeant flux and the relatively low reverse osmosis and nanofiltration membrane system of the rate of recovery often have unit
It is high to produce water consumption, scale inhibitor dosing amount is big in operational process, and unit production water raw water consumption is more, and unit production water concentrated water yield is big,
Unit produce moisture film quantity it is more etc. many insufficient or there are the problem of.
Summary of the invention
The present invention aiming at the shortcomings of the prior art, to overcome current technology above shortcomings, proposes a kind of novel trans
Infiltration and nanofiltration membrane treatment technology, it is therefore an objective to improve reverse osmosis and nanofiltration membrane treatment producing water ratio, reduce raw water consumption, drop significantly
Low concentrated water amount, the usage amount for reducing processing cost, decreasing or even eliminating antisludging agent.It can reduce, reduce or eliminate the operation of RO system
Rinse in the process, in traditional industries, zero-emission field, in terms of feasibility it is strong, either new projects or change
Making project can be used, and the device construction and installation are convenient and efficient, strong operability, processing capacity are strong.
To achieve the above object, the present invention is achieved through the following technical solutions:
Automatic valve 1, section between a kind of reverse osmosis nanofiltration processing technique, including high-pressure pump, water inlet automatic valve 1, water inlet automatic valve 2, section
Between automatic valve 2, concentrated water automatic valve 1,2, one sections of RO/NF putaminas of concentrated water automatic valve, one section of RO/NF film, two sections of RO/NF putaminas, two
Section RO/NF film, produces water valve, produces water ga(u)ge, concentrated water valve, concentrated water flowmeter RO/NF film brine seal circle.The high-pressure pump into
The mouth of a river is connected by pipeline and water inlet, and the water inlet automatic valve 1, water inlet and pass through with high-pressure pump water outlet automatic valve 2 respectively
Pipeline is connected in parallel, and one section of RO film both ends intake-outlet passes through pipeline with water inlet automatic valve 1, water inlet automatic valve 2 respectively
It connects, automatic valve 1 is connected in parallel with one section of RO/NF putamina, water inlet automatic valve 1 by pipeline respectively between the section, described
Automatic valve 2 is connected in parallel with one section of RO/NF putamina, water inlet automatic valve 2 by pipeline respectively between section, the concentrated water automatic valve 1
Automatic valve 1 is connected in parallel by pipeline between two sections of RO/NF putaminas, sections respectively, the concentrated water automatic valve 2 respectively with two sections
Automatic valve 2 is connected in parallel by pipeline between RO/NF putamina, section, one section of RO/NF putamina one end port respectively with water inlet from
Automatic valve 1 is connected in parallel by pipeline between dynamic valve 1, section, and one section of RO/NF putamina other end port is automatic with water inlet respectively
Automatic valve 2 is connected in parallel by pipeline between valve 2, section, the RO/ that one section of RO/NF film can be contained according to one section of RO/NF putamina
NF film number, which is sequentially connected, to be contained in one section of RO/NF putamina, and two sections of RO/NF putamina one end port is automatic between section respectively
Valve 1, concentrated water automatic valve 1 are connected in parallel by pipeline, two sections of RO/NF putamina other end ports automatic valve between section respectively
2, concentrated water automatic valve 2 is connected in parallel by pipeline, the RO/NF that two sections of RO/NF films can be contained according to two sections of RO/NF putaminas
Film number, which is sequentially connected, to be contained in two sections of RO/NF putaminas, and the RO/NF film brine seal circle is mounted on each RO/NF film
In grooves on two sides, RO/NF film brine seal circle concave side towards the two sides of RO/NF film, the production water valve respectively with one section of RO/NF
Putamina, two sections of RO/NF putaminas the production mouth of a river be connected in parallel by pipeline, the production water ga(u)ge and produce water valve by pipeline company
It connects, the production water ga(u)ge is connected with pipeline to water spot is produced, and the concentrated water valve is automatic with concentrated water automatic valve 1, concentrated water respectively
Valve 2 is connected in parallel by pipeline, and the concentrated water flowmeter and concentrated water valve pass through piping connection, the concentrated water flowmeter connection
Have at pipeline to concentrated water discharge point or NF concentrated water reuse.
The present invention carries out automation control using PLC or DCS etc., realizes unattended continuous and steady operation, reduces operation
Maintenance and personal management.
Detailed description of the invention
Below according to attached drawing, invention is further described in detail.
Fig. 1 is that the present invention is applied to reverse osmosis and nanofiltration membrane treatment technical field process flow diagram.
In attached drawing:
1, high-pressure pump；2, water inlet automatic valve 1；3, water inlet automatic valve 2；4, automatic valve 1 between section；5, automatic valve 2 between section；6, concentrated water from
Dynamic valve 1；7, concentrated water automatic valve 2；8, one section of RO/NF putamina；9, one section of RO/NF film；10, two sections of RO/NF putaminas；11, two sections of RO/
NF film；12, RO/NF film brine seal circle；13, water valve is produced；14, water ga(u)ge is produced；15, concentrated water valve；16, concentrated water flowmeter.
Specific embodiment
To illustrate that the present invention, implementation column of the present invention are as follows in more detail:
As shown in the picture, one kind described in present example is reverse osmosis and nanofiltration membrane treatment technology, including high-pressure pump (1), water inlet from
Automatic valve 2 (5), concentrated water automatic valve 1 (6), concentrated water are automatic between automatic valve 1 (4), section between dynamic valve 1 (2), water inlet automatic valve 2 (3), section
Valve 2 (7), one section of RO/NF putamina (8), one section of RO/NF film (9), two sections of RO/NF putaminas (10), two sections of RO/NF films (11), RO/
NF film brine seal circle (12) produces water valve (13), produces water ga(u)ge (14), concentrated water valve (15), concentrated water flowmeter (16).The height
Press pump (1) water inlet by pipeline and water inlet connect, the water inlet automatic valve 1 (2), water inlet automatic valve 2 (3) with respectively with height
Press pump (1) water outlet is connected in parallel by pipeline, one section of RO film both ends intake-outlet respectively with water inlet automatic valve 1 (2),
Automatic valve 2 (3) are intake by piping connection, between the section automatic valve 1 (4) respectively with one section of RO/NF putamina (8), water inlet from
Dynamic valve 1 (2) is connected in parallel by pipeline, and automatic valve 2 (5) is automatic with one section of RO/NF putamina (8), water inlet respectively between the section
Valve 2 (3) is connected in parallel by pipeline, the concentrated water automatic valve 1 (6) automatic valve between two sections of RO/NF putaminas (10), sections respectively
1 (4) are connected in parallel by pipeline, the concentrated water automatic valve 2 (7) automatic valve 2 between two sections of RO/NF putaminas (10), sections respectively
(5) be connected in parallel by pipeline, one section of RO/NF putamina (8) one end port respectively water inlet automatic valve 1 (2), between section from
Dynamic valve 1 (4) is connected in parallel by pipeline, one section of RO/NF putamina (8) other end port respectively with water inlet automatic valve 2
(3), automatic valve 2 (5) is connected in parallel by pipeline between section, and one section of RO/NF film (9) can according to one section of RO/NF putamina (8)
The RO/NF film number of splendid attire, which is sequentially connected, to be contained in one section of RO/NF putamina (8), two sections of RO/NF putamina (10) one end ends
Automatic valve 1 (4), concentrated water automatic valve 1 (6) are connected in parallel mouth by pipeline between section respectively, two sections of RO/NF putaminas (10)
Automatic valve 2 (5), concentrated water automatic valve 2 (7) are connected in parallel by pipeline between section respectively for other end port, two sections of RO/NF
The RO/NF film number that film (11) can be contained according to two sections of RO/NF putaminas (10), which is sequentially connected, is contained in two sections of RO/NF putaminas (10)
Interior, the RO/NF film brine seal circle (12) is mounted in each RO/NF film grooves on two sides, RO/NF film brine seal circle
(12) concave side is towards the two sides of RO/NF film, the production water valve (13) respectively with one section of RO/NF putamina (8), two sections of RO/NF films
The production mouth of a river of shell (10) is connected in parallel by pipeline, and the production water ga(u)ge (14) and production water valve (13) pass through piping connection,
The production water ga(u)ge (14) is connected with pipeline to producing water spot, the concentrated water valve (15) respectively with concentrated water automatic valve 1 (6),
Concentrated water automatic valve 2 (7) is connected in parallel by pipeline, and the concentrated water flowmeter (16) and concentrated water valve (15) pass through piping connection,
The concentrated water flowmeter (16) is connected at pipeline to concentrated water discharge point or NF concentrated water reuse.
When specifically used:
The first step remains that producing water valve (13) opens, and concentrated water valve (15) is half-open.
Second step, it is specified or when producing water and being assigned to wait be switched on, first open automatic valve 2 (5) between water inlet automatic valve 1 (2), section,
Concentrated water automatic valve 1 (6), automatic valve 1 (4), concentrated water automatic valve 2 (7) are in close state between water inlet automatic valve 2 (3), section, required
Water access high-pressure pump (1) handled by RO/NF membranous system, starts high-pressure pump (1), will by high-pressure pump (1) power transmission
Water enters one section of RO/NF putamina (8) from one section of RO/NF putamina (8) Single port by automatic valve 1, and water passes through RO/NF film runner
First RO/NF film successively flow to last RO/NF film out of section, passes through one section of RO/NF by the water of RO/NF film along runner
Putamina (8) other end port flow out one section of RO/NF putamina (8), by section between automatic valve 2 (5) enter two sections of RO/NF putaminas (10)
Single port enters two sections of RO/NF putaminas (10), and water is successively flow to most by RO/NF film runner first RO/NF film out of section
Latter RO/NF film flows out two sections of RO/ by two sections of RO/NF putamina (10) other end ports by the water of RO/NF film along runner
NF putamina (10) successively passes through concentrated water automatic valve 1 (6), concentrated water valve (15), concentrated water flowmeter (16) to concentrated water discharge point by the road
Or at NF concentrated water reuse, pass through one section of RO/ through one section of RO/NF film (9) of RO/NF film, the water of two sections of RO/NF films (11) along runner
NF film (9), two sections of RO/NF films (11) production mouths of a river are connected in parallel by pipeline and are sent by producing water valve (13), producing water ga(u)ge (14)
To using water spot.
Frequency control can be used in high-pressure pump (1) or high-pressure pump (1) outlet increases flow adjustment type valve, by adjusting high pressure
RO/NF is produced water flow, RO/NF concentrated water flow by the aperture for pumping (1) frequency or rate of discharge modulability valve and concentrated water valve (15)
It is adjusted to required flow.
After RO/NF produces water flow, RO/NF concentrated water flow is adjusted for the first time by [0019], high-pressure pump (1) frequency, high pressure
Pump (1) outlet increases flow adjustment type valve opening and the aperture etc. of concentrated water valve (15) remains unchanged, if operating condition changes, phase
That answers is finely adjusted.
The runing time of RO/NF system is set by automatic control programs such as PLC or DCS, being normally set up 120 minutes (can
It is set according to actual conditions).
Third step arrives when [0021] setting time or produces water halt instruction then when RO/NF system, first stops high-pressure pump (1)
With high-pressure pump (1) front end power drive, then successively automatic valve 2 between closing (can also simultaneously close off) water inlet automatic valve 1 (2), section
(5), concentrated water automatic valve 1 (6).
4th step, it is specified or when producing water and being assigned to wait be switched on, be then turned on into automatic valve 1 (4) between water automatic valve 2 (3), section,
Concentrated water automatic valve 2 (7), automatic valve 2 (5), concentrated water automatic valve 1 (6) are in close state between water inlet automatic valve 1 (2), section, required
Water access high-pressure pump (1) handled by RO/NF membranous system, starts high-pressure pump (1), will by high-pressure pump (1) power transmission
Water enters one section of RO/NF putamina (8) from one section of RO/NF putamina (8) Single port by automatic valve 2, and water passes through RO/NF film runner
First RO/NF film successively flow to last RO/NF film out of section, passes through one section of RO/NF by the water of RO/NF film along runner
Putamina (8) other end port flow out one section of RO/NF putamina (8), by section between automatic valve 1 (4) enter two sections of RO/NF putaminas (10)
Single port enters two sections of RO/NF putaminas (10), and water is successively flow to most by RO/NF film runner first RO/NF film out of section
Latter RO/NF film flows out two sections of RO/ by two sections of RO/NF putamina (10) other end ports by the water of RO/NF film along runner
NF putamina (10) successively passes through concentrated water automatic valve 2 (7), concentrated water valve (15), concentrated water flowmeter (16) to concentrated water discharge point by the road
Or at NF concentrated water reuse, pass through one section of RO/ through one section of RO/NF film (9) of RO/NF film, the water of two sections of RO/NF films (11) along runner
NF film (9), two sections of RO/NF films (11) production mouths of a river are connected in parallel by pipeline and are sent by producing water valve (13), producing water ga(u)ge (14)
To using water spot.
5th step, arrived to [0021] setting time or RO/NF system produce water halt instruction then, first stop high-pressure pump (1) and
High-pressure pump (1) front end power drive, then successively close (can also simultaneously close off) water inlet automatic valve 2 (3), automatic valve 1 (4) between section,
Concentrated water automatic valve 2 (7).
Be iteratively repeated [0018] into [0024] second step to the 5th step.
All bootings, shutdown, production water, stopping, time setting etc. are specified complete by automatic control programs such as PLC or DCS
At.
The present invention is used for Suzhou beverage plant, Shandong oil field recycle-water project RO system, with conventional RO/NF system pair
Than after the practical inventive technique, the system rate of recovery improves 10 ~ 20%, and concentrated water drainage reduces about 30 ~ 67%, scale inhibitor dosing amount
25 ~ 55% or so can be reduced, the reverse osmosis membrane service life extends 20 ~ 50%.
Following some economic benefits are brought after having used the technology of the present invention:
A, raw water water is reduced, raw water high pressure pump power is also therefore reduced, reduces power consumption；
B, it improves the rate of recovery simultaneously, reduces the dosage of antisludging agent, reduce reagent consumption expense；
C, the system rate of recovery is improved, raw water water is reduced, reduces raw water buying expenses, directly reduction expense；
D, the system rate of recovery is improved, concentrated water water substantially reduces, and can save the secondary desalting processing system of strong brine, can reduce and is
The operating cost of system directly reduces the discharge fee of strong brine simultaneously；
E, the system rate of recovery is improved, raw water water is reduced, reduces the processing load of RO pre-treatment system, extend pre- place
The service life for managing equipment reduces the discharge of pretreatment backwash water.
Though the present invention economically or from the discussion of engineering construction angle, all with greater advantage and feasibility:
A, operating cost can be saved；
B, equipment land occupation can be saved；
C, cost of labor can be saved；
D, reagent consumption can be reduced；
F, the investment of concentrated water reverse osmosis equipment can be saved；
G, either new projects or transformation project can be used；
H, it reduces RO/NF cleaning frequency membrane and extends the RO/NF Membrane cleaning period.
The present invention is specific to a technology of high saliferous desalting processing institute developmental research, and purport is improving desalination system
The rate of recovery, improve the utilization rate of water.The rate of recovery can be improved and scale formation can be prevented.
The technology of the present invention application so that RO/NF film can switch in the process of running water flow water inlet direction, make in putamina
Scaling tendency heavier concentrated water side in portion's becomes influent side, reduces the degree of concentration polarization, so that scaling tendency is eased,
The fouling time is extended；So when being applied to the higher positions such as strong brine reason difficulty waste water.
Specific embodiments of the present invention are described above, it is more specific and detailed, but should not be understood as to this hair
The limitation of bright the scope of the patents.It should be pointed out that not departing from structure of the invention for the general technical staff of this field
Under the premise of think of, various modifications and improvements can be made, these belong to the scope of protection of the patent of the present invention, therefore, this hair
The protection scope of bright patent is determined by the appended claims.
Claims (6)
1. a kind of reverse osmosis nanofiltration processing technique, including high-pressure pump (1), water inlet automatic valve 1 (2), water inlet automatic valve 2 (3), Duan Jian
Automatic valve 2 (5), concentrated water automatic valve 1 (6), concentrated water automatic valve 2 (7), one section of RO/NF putamina (8), one section between automatic valve 1 (4), section
RO/NF film (9), two sections of RO/NF films (11), RO/NF film brine seal circle (12), produces water valve at two sections of RO/NF putaminas (10)
(13), produce water ga(u)ge (14), concentrated water valve (15), concentrated water flowmeter (16), high-pressure pump (1) water inlet by pipeline with into
Water connection, the water inlet automatic valve 1 (2), water inlet automatic valve 2 (3) with respectively with high-pressure pump (1) water outlet pass through pipeline it is in parallel
Connection, one section of RO film both ends intake-outlet are connected with water inlet automatic valve 1 (2), water inlet automatic valve 2 (3) by pipeline respectively
It connecing, automatic valve 1 (4) is connected in parallel with one section of RO/NF putamina (8), water inlet automatic valve 1 (2) by pipeline respectively between the section,
Automatic valve 2 (5) is connected in parallel with one section of RO/NF putamina (8), water inlet automatic valve 2 (3) by pipeline respectively between the section, institute
Automatic valve 1 (4) is connected in parallel the concentrated water automatic valve 1 (6) stated by pipeline between two sections of RO/NF putaminas (10), sections respectively, described
Concentrated water automatic valve 2 (7) automatic valve 2 (5) is connected in parallel by pipeline between two sections of RO/NF putaminas (10), sections respectively, it is described
Automatic valve 1 (4) is connected in parallel by pipeline between water inlet automatic valve 1 (2), section respectively for one section of RO/NF putamina (8) one end port,
Automatic valve 2 (5) passes through pipeline simultaneously between water inlet automatic valve 2 (3), section respectively for one section of RO/NF putamina (8) other end port
Connection connection, the RO/NF film number that one section of RO/NF film (9) can contain according to one section of RO/NF putamina (8) are sequentially connected splendid attire
In one section of RO/NF putamina (8), two sections of RO/NF putamina (10) one end ports automatic valve 1 (4), concentrated water between section respectively
Automatic valve 1 (6) is connected in parallel by pipeline, two sections of RO/NF putamina (10) other end ports automatic valve 2 between section respectively
(5), concentrated water automatic valve 2 (7) is connected in parallel by pipeline, and two sections of RO/NF films (11) are according to two sections of RO/NF putaminas (10)
The RO/NF film number that can be contained, which is sequentially connected, to be contained in two sections of RO/NF putaminas (10), the RO/NF film brine seal circle
(12) be mounted in each RO/NF film grooves on two sides, RO/NF film brine seal circle (12) concave side towards the two sides of RO/NF film,
The production water valve (13) is in parallel by pipeline with the production mouth of a river of one section of RO/NF putamina (8), two sections of RO/NF putaminas (10) respectively
By piping connection, the production water ga(u)ge (14) is connected with for connection, the production water ga(u)ge (14) and production water valve (13)
For pipeline to water spot is produced, the concentrated water valve (15) is in parallel by pipeline with concentrated water automatic valve 1 (6), concentrated water automatic valve 2 (7) respectively
Connection, by piping connection, the concentrated water flowmeter (16) is connected with for the concentrated water flowmeter (16) and concentrated water valve (15)
At pipeline to concentrated water discharge point or NF concentrated water reuse.
2. a kind of reverse osmosis nanofiltration processing technique according to claim 1, it is characterised in that: flowed by automatically switching water
Water direction makes the heavier concentrated water side of putamina internal incrustation trend become influent side, reduces the degree of concentration polarization, so that knot
Dirty trend is eased, and the fouling time is extended.
3. a kind of reverse osmosis nanofiltration processing technique according to claim 1, it is characterised in that: each RO/NF film two sides
It is respectively mounted RO/NF film brine seal circle (12) in groove, RO/NF film brine seal circle (12) concave side is towards the two sides of RO/NF film.
4. a kind of reverse osmosis nanofiltration processing technique according to claim 1, it is characterised in that: flowed by automatically switching water
Water direction is not limited to two sections of RO/NF system arrangements, can also one, three, four, five ... N sections of practical RO/NF system processing.
5. a kind of reverse osmosis nanofiltration processing technique according to claim 1, it is characterised in that: switching is automatically controlled, it is unlimited
In automatic switchover, manual switching can also be passed through.
6. a kind of reverse osmosis nanofiltration processing technique according to claim 1, it is characterised in that: improve the operation of RO/NF system
The rate of recovery to save reach water conservation, reduce the adding of antisludging agent, unit produces water energy saving, unit produce water save into
Water, unit produce water and reduce concentrated water amount.
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Application publication date: 20190226 |