CN107879524A - Can online backwashing reverse osmosis water treatment system - Google Patents
Can online backwashing reverse osmosis water treatment system Download PDFInfo
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- CN107879524A CN107879524A CN201711217974.5A CN201711217974A CN107879524A CN 107879524 A CN107879524 A CN 107879524A CN 201711217974 A CN201711217974 A CN 201711217974A CN 107879524 A CN107879524 A CN 107879524A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 207
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 132
- 238000011001 backwashing Methods 0.000 title claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 108
- 238000010926 purge Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 239000006210 lotion Substances 0.000 claims abstract description 17
- 238000009298 carbon filtering Methods 0.000 claims abstract description 15
- 230000001954 sterilising effect Effects 0.000 claims abstract description 12
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims description 45
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 238000011010 flushing procedure Methods 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 239000013505 freshwater Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses it is a kind of can online backwashing reverse osmosis water treatment system, including raw water high-pressure pump, active carbon filtering device, first-stage reverse osmosis membrane module, two-pass reverse osmosis membrane module and the purging system being sequentially connected along water (flow) direction, raw water high-pressure pump purging system includes concentration of lotion detection means, the water side of concentration of lotion detection means is divided into two-way, export and connect with first-stage reverse osmosis membrane module concentrated water all the way, another way connects with the outlet of two-pass reverse osmosis membrane module concentrated water;Produce and ultraviolet sterilization apparatus is set at the mouth of a river.The present invention realizes and first-stage reverse osmosis membrane module, two-pass reverse osmosis membrane module is rinsed using raw water as rinse water, support progressively to carry out online back flush to reverse osmosis membrane assemblies at different levels by the switching of water pipes at different levels and control valve.
Description
Technical field
The present invention relates to reverse osmosis water treatment system technical field, and counter-infiltration system cleaning dress is utilized more particularly to one kind
Put realize can online backwashing reverse osmosis water treatment system.
Background technology
Reverse osmosis technology is now widely used for water treatment field, and its operation principle is using pressure differential as power, utilizes film
Selective penetrated property reach the separation of solvent and solute.Due to the selective penetrated property of film, solute is on reverse osmosis membrane surface in water inlet
Concentration, form precipitation and be attached to reverse osmosis membrane surface or be jammed in reverse osmosis membrane fenestra, cause reverse osmosis membrane to pollute, under performance
Drop.Due to the difference of influent quality, pollute reverse osmosis membrane material include hydrated metal oxide, carbonate, Sulfates,
Silicic acid class, organic species, microbiology class etc..
Reverse-osmosis membrane element can recover major part or partial properties, then clean no longer after the cleaning by chemistry
It is effective, in the case that function does not reach requirement, it is necessary to change reverse osmosis membrane.Current reverse osmosis membrane typically all carries
The function of forward direction cleaning;In practical operation, if reverse-osmosis membrane element removed from counter-infiltration system, packing is exchanged
Installation site, back flush is carried out to reverse-osmosis membrane element offline, wasted time and energy, installation is also inconvenient.But forward direction cleaning is easy
Cause above membrane component pollution shifts backward, cleaning not thorough so that the cleaning of reverse osmosis membrane becomes frequent, causes running cost
Increase, the increase of cleaning charge, the service life reduction of reverse-osmosis membrane element.
The content of the invention
In order to overcome the shortcomings of above-mentioned existing counter-infiltration system technology, the present invention is provided one kind and cleaned using counter-infiltration system
Device realizes the technical scheme of the counter-infiltration system of online backwashing, and the system supports reverse osmosis membrane assembly to carry out online reversely punching
Wash.To reach above-mentioned purpose, the invention provides a kind of technical scheme:
It is a kind of can online backwashing reverse osmosis water treatment system, including the raw water high pressure being sequentially connected along water (flow) direction
Pump (1), first-stage reverse osmosis membrane module (3), two-pass reverse osmosis membrane module (4) and purging system, raw water high-pressure pump (1) go out
Active carbon filtering device (2), the activated carbon filtering are set between mouth end and the raw water arrival end of first-stage reverse osmosis membrane module (3)
Device (2) port of export connects the raw water arrival end of first-stage reverse osmosis membrane module (3) all the way, and another way backwashes return valve through one-level
(23) purging system is connected;The water outlet of the first-stage reverse osmosis membrane module (3) produces water discharging valve (5,6) even through one-level
Practice midwifery the mouth of a river;The concentrated water of the first-stage reverse osmosis membrane module (3) exports is divided into two-way through one-level backwash valve (7,8), connects all the way
One-level concentrated water discharge valve (10) is connect, connects the two-pass reverse osmosis film by two-pass reverse osmosis original water inlet valve (9) all the way in addition
The raw water entrance of component (4);The water outlet of the two-pass reverse osmosis membrane module (4) produces water discharging valve (11) connection production through two level
The mouth of a river;The concentrated water outlet of the two-pass reverse osmosis membrane module (4) is divided into two-way, connects two level concentrated water discharge valve (13) all the way, separately
Connect the purging system through two level backwash valve (12) all the way outside;The purging system includes concentration of lotion detection means
(20), the water side of the concentration of lotion detection means (20) is divided into two-way, passes through one-level backwash valve (7,8) respectively all the way
Export and connect with first-stage reverse osmosis membrane module (3) concentrated water, another way passes through two level backwash valve (12) and two-pass reverse osmosis film group
Part (4) concentrated water outlet connection;Ultraviolet sterilization apparatus (14) is set at the production mouth of a river.Further, the purging system is also
Including the cleaning water tank (15), flushing water pump (18) and cleaning filter (19) being sequentially connected along water (flow) direction, the rinse water
It is connected between case (15) and flushing water pump (18) and flushing water pump water intaking valve (17) is set, the connection of described cleaning water tank (15) bottom is set
Put clear water water tank drain valve (16).
Further, two level is set between the two-pass reverse osmosis original water inlet valve (9) and two-pass reverse osmosis membrane module (4)
Return valve (25) is backwashed, the two level backwash return valve (25) is connected with the cleaning water tank (15).
Further, the cleaning filter (19) is provided with backwash valve, and the backwash valve upper end offers backwash
Valve body port, described backwash are sequentially arranged with backwash valve element, backwash valve sealing ring, recoil at valve body port
Wash valve body top cover and backwash knob.A backwash valve is added on the fore filter of routine, solves impurity attachment
Can not be rinsed well on filter screen the problem of, the demounting procedure of cleaning filter is reduced, it is user-friendly.
Preferably, the first-stage reverse osmosis membrane module (3) is made up of more than one group of reverse osmosis membrane assembly parallel connection.It is preferred that
Ground, it is 2 that first-stage reverse osmosis membrane module (3) the group number organizes the ratio between number with two-pass reverse osmosis membrane module (4):1.
Further, the water side of the concentration of lotion detection means (20) is divided into two-way, all the way delivery port and one-level
Set one-level to clean water valve (22) between backwash valve (7,8), set between another way delivery port and two level backwash valve (12)
Two level cleaning water valve (21);Set between the active carbon filtering device (2) and first-stage reverse osmosis membrane module (3) raw water entrance high
Press regulating valve (24).
The present invention is beneficial to be had technical effect that:
1. by the switching of water pipes at different levels and control valve, realize using raw water as rinse water to first-stage reverse osmosis membrane module,
Two-pass reverse osmosis membrane module is rinsed, and supports progressively to carry out online back flush to reverse osmosis membrane assemblies at different levels, so as to improve
The adaptability to various water quality of reverse osmosis unit, is carried out so as to reduce systematic running cost with and to reverse osmosis membrane assembly
Cost is backwashed, in actual applications with obvious economic benefit and environmental benefit.
2. the online backwashing of reverse osmosis membrane assemblies at different levels can be realized, it is not necessary to which original system is made with simple economy
Very big variation, cost is also very low, and the online backwashing technology can typically extend the service life 1/ of reverse osmosis membrane
3, while run simple to operate, using automatic valve, realize and shut down automatic backwash.
3. purging system forms circulation flushing, rinse water with first-stage reverse osmosis membrane module and two-pass reverse osmosis membrane module respectively
The cleaning fluid flowed out respectively by first-stage reverse osmosis membrane module and two-pass reverse osmosis membrane module flows back to the rinse water of purging system again
Case;In addition, purging system is entered by setting concentration of lotion detection means to entering the cleaning solution concentration in reverse osmosis membrane assembly
Row measurement, whether so as to control cleaning solution to inject, whether clean water is changed or flushing operation is completed, can be effectively by reverse osmosis membrane
The obstinate thing for being difficult to clear up in component is cleaned, and is ensured the clean-up performance of reverse osmosis membrane assembly, is increased the service life, and improves production
Water.
4. being provided with active carbon filtering device before reverse osmosis membrane assembly device, the larger pollution of particle can be effectively filtered
Thing, effectively extend the service life of film in reverse-osmosis filtering device, reduce the pollution speed of reverse osmosis membrane in reverse-osmosis filtering device
Degree and degree, reduce the frequency backwashed to reverse osmosis membrane assembly and single backwash cost.
5. production is provided with ultraviolet sterilization apparatus at the mouth of a river, make further sterilization to water purification, ensure water purification quality.
Brief description of the drawings
Fig. 1 be the present invention can online backwashing reverse osmosis water treatment system structural representation
In figure:1- raw waters high-pressure pump, 2- active carbon filtering devices, 3- first-stage reverse osmosis membrane module, 4- two level reverse osmosis
Permeable membrane component, 5- one-levels production water discharging valve, 6- one-levels production water discharging valve, 7- one-levels backwash valve, 8- one-levels backwash valve,
9- two-pass reverse osmosis original water inlets valve, 10- one-level concentrated water discharges valve, 11- two levels production water discharging valve, the backwash of 12- two levels
Valve, 13- two level concentrated water discharges valve, 14- ultraviolet sterilization apparatus, 15- cleanings water tank, 16- clear water water tanks drain valve, 17-
Flushing water pump water intaking valve, 18- flushing water pumps, 19- cleanings filter, 20- concentration of lotion detection means, 21- two levels are clear
Wash water valve, 22- one-levels cleaning water valve, 23- one-levels backwash return valve, 24- septum valves, 25- two levels backwash back
Flow valve
Embodiment
Presently in connection with accompanying drawing it is a kind of to embodiment of the present invention can the reverse osmosis water treatment system of online backwashing make into one
The explanation of step, it is as shown in Figure 1 can online backwashing reverse osmosis water treatment system structural representation.
It is a kind of can online backwashing reverse osmosis water treatment system, including the raw water high-pressure pump being sequentially connected along water (flow) direction
1st, first-stage reverse osmosis membrane module 3, two-pass reverse osmosis membrane module 4 and purging system, the port of export and the one-level reverse osmosis of raw water high-pressure pump 1
Active carbon filtering device 2 is set between the raw water arrival end of permeable membrane component 3, and the port of export of active carbon filtering device 2 connects one all the way
The raw water arrival end of level reverse osmosis membrane assembly 3, wherein active carbon filtering device 2 and the raw water entrance of first-stage reverse osmosis membrane module 3 it
Between set septum valve 24, another way through one-level backwash return valve 23 connect purging system;First-stage reverse osmosis membrane module 3
Water outlet produces water discharging valve 5, the one-level production connection production of water discharging valve 6 mouth of a river through one-level;The concentrated water of first-stage reverse osmosis membrane module 3 goes out
Mouthful divide through one-level backwash valve 7, one-level backwash valve 8 for two-way, connect one-level concentrated water discharge valve 10 all the way, pass through all the way in addition
Two-pass reverse osmosis original water inlet valve 9 connects the raw water entrance of two-pass reverse osmosis membrane module 4;The fresh water of two-pass reverse osmosis membrane module 4
Outlet is through the two level production connection production of water discharging valve 11 mouth of a river;The concentrated water outlet of two-pass reverse osmosis membrane module 4 is divided into two-way, connects all the way
Two level concentrated water discharge valve 13, connect purging system through two level backwash valve 12 all the way in addition;Purging system is also included along current side
To cleaning water tank 15, flushing water pump 18, cleaning filter 19 and the concentration of lotion detection means 20 being sequentially connected, water tank is cleaned
Connection sets flushing water pump water intaking valve 17 between 15 and flushing water pump 18, and the connection of cleaning water tank 15 bottom sets the discharge of clear water water tank
Valve 16;Cleaning filter 19 is provided with backwash valve, and backwash valve upper end offers backwash valve body port, backwashes valve body port
Place is sequentially arranged with backwash valve element, backwash valve sealing ring, backwash valve body top cover and backwash knob;Cleaning
The water side of liquid concentration detection apparatus 20 is divided into two-way, passes through one-level backwash valve 7, one-level backwash valve 8 and one respectively all the way
The outlet connection of level reverse osmosis membrane assembly 3 concentrated water, and set between delivery port and one-level backwash valve 7, one-level backwash valve 8
One-level cleans water valve 22, and another way is connected by two level backwash valve 12 and the outlet of the concentrated water of two-pass reverse osmosis membrane module 4, and
Two level is set to clean water valve 21 between delivery port and two level backwash valve 12;Produce and ultraviolet sterilization apparatus 14 is set at the mouth of a river.
First-stage reverse osmosis membrane module 3 is made up of more than one group of reverse osmosis membrane assembly parallel connection, with reference to accompanying drawing 1, the present embodiment
First-stage reverse osmosis membrane module 3 is made up of 2 groups of reverse osmosis membrane assembly parallel connections, or 1 group, 3 groups, 4 groups, 5 groups etc. it is a number of
Reverse osmosis membrane assembly it is in parallel form, selected according to the water quality situation of processing.3 groups of numbers of first-stage reverse osmosis membrane module and two level
The ratio between 4 groups of numbers of reverse osmosis membrane assembly are 2:1, with reference to accompanying drawing 1, the present embodiment two-pass reverse osmosis membrane module quantity is 1 group;Work as one-level
When reverse osmosis membrane assembly 3 is made up of 4 groups of reverse osmosis membrane assembly parallel connections, two-pass reverse osmosis membrane module quantity is 2 groups, by that analogy.
The course of work:During reverse osmosis water treatment system operation production water, open raw water high-pressure pump 1, active carbon filtering device 2,
Septum valve 24, one-level production water discharging valve 5, one-level production water discharging valve 6, one-level backwash valve 7, one-level backwash valve 8, two level
Counter-infiltration original water inlet valve 9, two level production water discharging valve 11, two level concentrated water discharge valve 13, ultraviolet sterilization apparatus 14, close one-level
Other all valves such as concentrated water discharge valve 10, two level backwash valve 12 and one-level backwash return valve 23, operating pressure 1.0MPa
~1.5MPa, carries out positive production production water, and raw water is handled after the filtering of active carbon filtering device 2 by first-stage reverse osmosis membrane module 3
After be divided into water outlet and concentrated water outlet two-way outlet, fresh water from water outlet respectively by one-level production water discharging valve 5, one-level production
Water discharging valve 6 uses after the sterilization processing of ultraviolet sterilization apparatus 14 as final process water quality, concentrated water from concentrated water export into
Enter two-pass reverse osmosis membrane module and be further further divided into water outlet and concentrated water outlet two-way outlet after processing, fresh water is from water outlet
By two level production water discharging valve 11 used after the sterilization processing of ultraviolet sterilization apparatus 14 as final process water quality, concentrated water from
Discharged in two level concentrated water discharge valve 13.
When backwashing the 1st group of reverse osmosis membrane assembly in first-stage reverse osmosis membrane module 3, top counter-infiltration is seen as from accompanying drawing 1
Membrane module, raw water high-pressure pump 1, active carbon filtering device 2, one-level backwash return valve 23 are opened, closes other all valves, it is high
Pressure raw water enters cleaning water tank 15, after waiting cleaning water tank 15 to fill rinse water, closes raw water high-pressure pump 1 and one-level backwashes back
Flow valve 23;Start purging system, start flushing water pump 18, flushing water pump water intaking valve 17, one-level cleaning water valve 22, one-level backwash
Valve 7, septum valve 24 and one-level backwash return valve 23, close other all valves, rinse water is through over cleaning filter 19
With concentration of lotion detection means 20, circulation backwash is carried out to the 1st group of reverse osmosis membrane assembly in first-stage reverse osmosis membrane module 3,
Concentration of lotion detection means 20 measures to cleaning solution concentration, so as to control cleaning solution whether to inject, rinse water whether more
Change or flushing operation is completed, rinse water, which needs to change, then opens the discharge rinse water of clear water water tank drain valve 16, again to rinse water
Case 15 carries out raw water injection.
When backwashing the 2nd group of reverse osmosis membrane assembly in first-stage reverse osmosis membrane module 3, bottom counter-infiltration is seen as from accompanying drawing 1
Membrane module, start flushing water pump 18, flushing water pump water intaking valve 17, one-level cleaning water valve 22, one-level backwash valve 8, high voltage adjusting
Valve 24 and one-level backwash return valve 23, close other all valves, rinse water is through over cleaning filter 19 and concentration of lotion
Detection means 20, circulation backwash, concentration of lotion inspection are carried out to the 2nd group of reverse osmosis membrane assembly in first-stage reverse osmosis membrane module 3
Survey device 20 to measure cleaning solution concentration, whether so as to control cleaning solution to inject, whether rinse water changes or flushing operation
Complete, rinse water, which needs to change, then opens the discharge rinse water of clear water water tank drain valve 16, carries out raw water to cleaning water tank 15 again
Injection.
When backwashing two-pass reverse osmosis membrane module 4, start flushing water pump 18, flushing water pump water intaking valve 17, two level rinse water
Valve 21, two level backwash valve 12 and two level backwash return valve 25, close other all valves, rinse water is through over cleaning filter
19 and concentration of lotion detection means 20, circulation backwash, concentration of lotion detection means are carried out to two-pass reverse osmosis membrane module 4
20 pairs of cleaning solution concentration are measured, and whether so as to control cleaning solution to inject, whether rinse water is changed or flushing operation is completed, clearly
Wash water, which needs to change, then opens the discharge rinse water of clear water water tank drain valve 16, carries out raw water injection to cleaning water tank 15 again.
As the deformation of the present embodiment, rinse water can also be connected with pipeline by fresh water Water filling valve is newly increased at the production mouth of a river
Case 15, the rinse water using treated fresh water as purging system.
The technical concepts and features of embodiment of above only to illustrate the invention, its object is to allow be familiar with technique
People understands present disclosure and is carried out, and it is not intended to limit the scope of the present invention, all according to spirit of the invention
The equivalent change or modification that essence is done, it should all cover within the scope of the present invention.
Claims (7)
1. it is a kind of can online backwashing reverse osmosis water treatment system, including the raw water high-pressure pump being sequentially connected along water (flow) direction
(1), first-stage reverse osmosis membrane module (3), two-pass reverse osmosis membrane module (4) and purging system, it is characterised in that:The raw water high pressure
Active carbon filtering device (2) is set between the port of export of pump (1) and the raw water arrival end of first-stage reverse osmosis membrane module (3), it is described
Active carbon filtering device (2) port of export connects the raw water arrival end of first-stage reverse osmosis membrane module (3) all the way, and another way is anti-through one-level
Rinse return valve (23) and connect the purging system;The water outlet of the first-stage reverse osmosis membrane module (3) is through one-level production water row
Put valve (5,6) the connection production mouth of a river;The concentrated water outlet of the first-stage reverse osmosis membrane module (3) is divided into through one-level backwash valve (7,8)
Two-way, one-level concentrated water discharge valve (10) is connected all the way, in addition all the way by two-pass reverse osmosis original water inlet valve (9) connection described two
The raw water entrance of level reverse osmosis membrane assembly (4);The water outlet of the two-pass reverse osmosis membrane module (4) produces water discharging valve through two level
(11) the connection production mouth of a river;The concentrated water outlet of the two-pass reverse osmosis membrane module (4) is divided into two-way, connects two level concentrated water discharge all the way
Valve (13), connect the purging system through two level backwash valve (12) all the way in addition;The purging system includes concentration of lotion
Detection means (20), the water side of the concentration of lotion detection means (20) are divided into two-way, recoiled respectively by one-level all the way
Wash valve (7,8) to connect with the outlet of first-stage reverse osmosis membrane module (3) concentrated water, another way is anti-by two level backwash valve (12) and two level
Permeable membrane element (4) concentrated water outlet connection;Ultraviolet sterilization apparatus (14) is set at the production mouth of a river.
2. it is according to claim 1 can online backwashing reverse osmosis water treatment system, it is characterised in that:The cleaning system
System also includes the cleaning water tank (15), flushing water pump (18) and cleaning filter (19) being sequentially connected along water (flow) direction, described clear
It is connected between water tank (15) and flushing water pump (18) and flushing water pump water intaking valve (17) is set, described cleaning water tank (15) bottom connects
Connect and clear water water tank drain valve (16) is set.
3. it is according to claim 2 can online backwashing reverse osmosis water treatment system, it is characterised in that:The two level is anti-
Permeating between original water inlet valve (9) and two-pass reverse osmosis membrane module (4) sets two level to backwash return valve (25), and the two level is anti-
Return valve (25) is rinsed to be connected with the cleaning water tank (15).
4. it is according to claim 2 can online backwashing reverse osmosis water treatment system, it is characterised in that:It is described to clean
Filter (19) is provided with backwash valve, and the backwash valve upper end offers backwash valve body port, the backwash valve body port
Place is sequentially arranged with backwash valve element, backwash valve sealing ring, backwash valve body top cover and backwash knob.
5. according to any one in claim 1-4 can online backwashing reverse osmosis water treatment system, its feature exists
In:The first-stage reverse osmosis membrane module (3) is made up of more than one group of reverse osmosis membrane assembly parallel connection.
6. it is according to claim 5 can online backwashing reverse osmosis water treatment system, it is characterised in that:The one-level is anti-
It is 2 that permeable membrane element (3), which organizes number and organizes the ratio between number with two-pass reverse osmosis membrane module (4),:1.
7. according to any one in claim 6 can online backwashing reverse osmosis water treatment system, it is characterised in that:
The water side of the concentration of lotion detection means (20) is divided into two-way, all the way between delivery port and one-level backwash valve (7,8)
Set one-level to clean water valve (22), set two level to clean water valve (21) between another way delivery port and two level backwash valve (12);
Septum valve (24) is set between the active carbon filtering device (2) and first-stage reverse osmosis membrane module (3) raw water entrance.
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CN111453868B (en) * | 2020-04-29 | 2022-02-25 | 曾祥奎 | CIP (cleaning in place) process for deep purification and filtration of drinking water by using membrane core |
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