CN102452704A - Anti-pollution reverse osmosis device and use method thereof - Google Patents
Anti-pollution reverse osmosis device and use method thereof Download PDFInfo
- Publication number
- CN102452704A CN102452704A CN2010105267275A CN201010526727A CN102452704A CN 102452704 A CN102452704 A CN 102452704A CN 2010105267275 A CN2010105267275 A CN 2010105267275A CN 201010526727 A CN201010526727 A CN 201010526727A CN 102452704 A CN102452704 A CN 102452704A
- Authority
- CN
- China
- Prior art keywords
- reverse osmosis
- water
- cleaning
- pollution
- resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to an anti-pollution reverse osmosis device and a use method thereof. The anti-pollution reverse osmosis device is added with desalinated water circulating pumps in a connection way that a plurality of groups of pumps are in parallel based on the combination and permutation of reverse osmosis membranes, wherein part of desalinated water returns in the front of the entrance to raise the recovery rate and increase the membrane surface flow velocity. The device sequentially cleans the reverse osmosis membranes in groups by reverse osmosis membranes or cleaning fluid. When the reverse osmosis membranes are working, the reverse osmosis high-pressure pump works at a lower frequency intermittently. The water inflow pressure is also lowered, which is helpful for a pollutant layer adsorbed on the membrane surface to be desorbed from the membrane surface and taken away by the water flow. A reducing agent and antisludging agent feeding hole is arranged behind a security filter core, wherein non-oxidizing bactericides are fed through the medicine feeding hole regularly, and varieties of the non-oxidizing bactericides are changed frequently to prevent microorganisms from producing drug resistance. In comparison with the common reverse osmosis devices, the device disclosed by the invention has a higher membrane surface flow speed and an on-line automatic cleaning function. The device also employs the non-oxidizing bactericides to sterilize regularly such that the device has a better anti-pollution performance.
Description
Technical field
The present invention relates to WWT and pure water preparation field, relate in particular to a kind of resistant to pollution reverse osmosis unit and method of use.
Background technology
Reverse osmosis technology is current state-of-the-art membrane separation technique.Its principle is under the effect that is higher than solution osmotic pressure, can not these materials and water sepn be come through the characteristics of reverse osmosis membrane according to other materials.Because the membrane pore size very little (being merely about 1nm) of reverse osmosis membrane, therefore can remove (clearance are up to 97～99%) such as dissolved salts in the water, colloid, mikrobe, organism effectively.The reverse osmosis membrane filtration system has advantages such as water quality is good, power consumption is low, pollution-free, technology is simple, easy and simple to handle.The standard component that present most commercial reverse osmosis membranes all are the rolling forms.
The reverse osmosis membrane arrangement mode that at present most of large-scale reverse osmosis system adopts all is the one-level multi-stage type.Its major cause is to consider the factor of concentration polarization, and the recovery of single reverse osmosis membrane generally should not be higher than 15%, adopts one section r-o-like this, and its recovery receives certain limitation (seeing table 1).In addition, consider the optimization of pressurized vessel manufacturing cost, general pressurized vessel series component number all is by design below 6 or 6.Therefore but in actual application, the required recovery that reaches often higher (75%-90%) has to adopt the reverse osmosis system of one-level multistage for a lot of systems.
Table 1. membrane element series connection quantity and maximum recovery
| The membrane element serial number | 1 | 2 | 3 | 4 | 5 | 6 |
| The recovery, % | 16 | 29 | 38 | 46 | 53 | 59 |
Multistratum system is meant first section dense water as second section water inlet, and second section dense water is as the 3rd section water inlet, by that analogy.A water inlet part of every section becomes product water, and back one section flooding velocity can reduce, and saltiness can raise, thus the membrane element quantity of back segment lack than the membrane element quantity of the preceding paragraph, to guarantee normal flooding velocity.General arrangement mode is 2: 1 or 4: 2: 1.Usually, two sections systems can accomplish 50～75% to the recovery, and three sections system recoveries rates accomplish 75～90%.
Multistratum system can reach the needed recovery, but also has some problems, comprising:
(1). service discharge hour, crossflow velocity is low, is prone to produce film and pollutes;
(2). multistratum system recovery adjustable amplitude is less;
(3). multistratum system needs when cleaning all to shut down, and can't when operation, carry out on-line cleaning to whole system, can't clean part film wherein;
(4). wherein a part of reverse osmosis membrane material producing water deteriorating water quality can cause whole system to produce the water deteriorating water quality, is difficult to this part film is isolated out.
In the reverse osmosis membrane operating process, concentration polarization and film pollute and unavoidably will take place.In use for some time, can form pollution layer.The composition of pollution layer comprises inorganic scale, organic deposition and mikrobe.The reverse osmosis membrane pollution can cause the film operating pressure to increase, and process cost increases, and produces the water deteriorating water quality.Cleaning is polluted for reverse osmosis membrane and concentration polarization is effectively, and the cleaning way of at present general reverse osmosis system mainly comprises following two kinds:
(1). in operation for some time, the concentrated water discharge valve is opened fully, with swiftly flowing former water reverse osmosis membrane is carried out square impact, its frequency is generally by one day several times once a day.
(2). after the operation long period, matting is completely carried out in r-o-at reverse osmosis membrane, be about to clean after reverse osmosis membrane shifts out from system.
Adopt the mode of former water square impact can reduce the film pollution to a certain extent, but its frequency is limited, and each the cleaning can influence normally be produced water; Simultaneously relatively poor at raw water quality, particularly relatively poor under the situation of supersalinity for the removal effect of film surface pollution.Adopt the method for matting can recover film properties preferably, but matting need expend the long period, influences the operation of whole system; Frequent matting also can influence the life-span of reverse osmosis membrane simultaneously.
Summary of the invention
To the defective that exists in the prior art; The object of the present invention is to provide a kind of resistant to pollution reverse osmosis unit and method of use thereof, be prone to pollute to overcome the reverse osmosis unit that existing reverse osmosis membrane apparatus exists, can not online grouping cleaning, little, the system of the recovery amplitude of accommodation produces water water quality and receives shortcomings such as indivedual film defective effects easily.
Product technology scheme of the present invention is:
A kind of resistant to pollution reverse osmosis unit is characterized in that comprising:
Raw water box 1 is provided with suction culvert and outlet pipeline;
Topping-up pump 2, water-in is connected with the raw water box outlet pipeline, and water outlet is connected with security personnel's strainer;
Security personnel's strainer 3 is provided with suction culvert and outlet pipeline, and suction culvert is connected with the topping-up pump outlet, and outlet is connected with the HPP suction culvert;
Dosing mouth 4 is arranged on security personnel's filter outlet pipe road;
HPP 5, water-in is connected with security personnel's filter outlet pipe road, and water outlet is connected with the reverse osmosis module pressure vessel inlet;
Reverse osmosis units 6; Be equally divided into the n group, each organizes pressurized vessel and the membrane module number is identical, and group is confirmed n according to the scale of water treatment project; Each group has identical pressurized vessel number, and reverse osmosis membrane assembly (8040 assemblies or 4040 assemblies) number is identical in the reverse osmotic pressure force container.
The reverse osmosis produced water out of reverse osmosis membrane unit 6 directly connects product water tank 10 through pipeline, and the backwash water outlet of reverse osmosis membrane unit 6 is connected to through branch line and cleans water tank 11,12 or discharging.
Reverse osmosis concentrated water-circulating pump 8, water-in is connected with reverse osmosis module 6 dense water outs, and the dense water of a water outlet part is through dense water regulating valve 9 dischargings, and a part is mixed with the water outlet of HPP 5 before being back to the reverse osmosis membrane assembly inlet.
Scavenging pump 13, water inlet connects product water tank 10 respectively and cleans water tank 11,12 by pipeline, and delivery port cleans the filter inlet of ensuring public security by the pipeline connection.
Clean security personnel's strainer water-in and be connected with the scavenging pump outlet, outlet is connected with the backwash water-in of reverse osmosis membrane unit 6 through pipeline.
Electric/pneumatic valve 7 is arranged on the import and the outlet of every group of reverse osmosis module, through the automatic switchover of closing and opening control product water and cleaning of valve.
Application method technical scheme of the present invention is:
A kind of application of above-mentioned resistant to pollution reverse osmosis unit is characterized in that comprising following treatment step:
Former water in the raw water box 1 gets into security personnel's strainer 3 through topping-up pump 2 superchargings, after security personnel's strainer 3 filters; Add required medicament at dosing mouth 4; After HPP 5 superchargings, get into reverse osmosis units 6, after reverse osmosis units filtered, reverse osmosis produced water got into and produces water tank 10; A reverse osmosis concentrated water part is back to the water-in of reverse osmosis membrane unit 6 through r-o-circulation line pump 8, and another part emits or gets into other treatment systems and further handles.Add non-oxidizable sterilant termly at dosing mouth 4, and regular replacing sterilant kind.
On the basis of technique scheme, also comprise following on-line cleaning step:
During on-line cleaning, contained membrane module is equally divided into some groups in the reverse osmosis membrane unit 4, each a group of only cleaning in order wherein, and all the other each groups then keep running status;
During reverse osmosis membrane unit 6 on-line cleaning; Used scavenging solution is for producing the reverse osmosis produced water in the water tank 10; Reverse osmosis produced water filters through cleaning security personnel's filter core 15 after scavenging pump 14 aspirates, by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6; Backwash water outlet by reverse osmosis membrane unit 6 is discharged, and enters pretreatment unit (like equalizing tank, biochemistry pool or ultrafiltration membrane cisterna).
When reverse osmosis membrane carries out matting; Used scavenging solution is for cleaning the cleaning agent in the water tank 11 or 12; Scavenging solution filters through cleaning security personnel's filter core 15 after scavenging pump 13 aspirates, by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6; Backwash water outlet by reverse osmosis membrane unit 6 is discharged, and is back to clean water tank 11 or 12.
In the reverse osmosis units; The group number of reverse osmosis units is 2～8 groups; Every group pressurized vessel number is 1～20, and the membrane module number of every pressurized vessel is 1～6, and preferred r-o-group number is 4～6 groups; The pressurized vessel number is 1～8, and preferred every pressurized vessel membrane module number is 4～6.
In the reverse osmosis produced water operation, the reverse osmosis high-pressure pump discharge pressure is 0.5～3.0MPa, and preferred HPP top hole pressure is 0.8～2.0MPa.
In the reverse osmosis produced water operation, the r-o-recovery is controlled between 30%～95%, and the preferred recovery is 50%～80%.
In the reverse osmosis produced water operation, the reverse osmosis concentrated water circular flow is 0～3 times of flooding velocity, and preferred dense water cycle flow is 0.5～2 times of flooding velocity.
In the reverse osmosis produced water operation, the sterilant dosing method replaces sterilization for using two kinds of non-oxidizable sterilant, adds once in per 1～10 day, and add concentration is 10～100mg/L at every turn, and the time of adding is 10～60min at every turn. Preferred sterilant dosing method is used alternatingly for using RH-893 and DBNPA, adds once in per 3～8 days, and add concentration is 40mg/L at every turn, and the time of adding is 15～40min at every turn.
In the operation of r-o-on-line cleaning, when using de-salted water to clean, scavenging period is spaced apart 0.5～24h, and preferred scavenging period is spaced apart 2～6h.
In the operation of r-o-on-line cleaning, cleaning flow is single 1～6 times of organizing the reverse osmosis produced water yield, preferably cleans flow 2～3 times for the reverse osmosis produced water yield of single group.
In the operation of r-o-on-line cleaning, the pH scope of pickling is 2.0～4.0, and the pH scope of alkali cleaning is 10.0～12.0, preferably cleans the pH value and is pickling 2～2.5, alkali cleaning 11.5～12.
Carry out in the cleaning operation in r-o-, the more original frequency of reverse osmosis high-pressure pump reduces by 5%～30%, and preferred HPP frequency reduces by 15%～20% for more original frequency.
When reverse osmosis membrane carried out matting, cleaning flow was single 1～6 times of organizing the reverse osmosis produced water yield, preferably cleaned flow 3～4 times for the reverse osmosis produced water yield of single group.
The valve that need to use in the technique scheme is electronic or air operated ball valve or butterfly valve, electronic degree adjustment valve, sampling valve etc., can realize unlatching and closure or aperture adjusting through manually or automatic control, all can adopt existing techniques in realizing, and this paper no longer details.
The metrical instrument that needs in the technique scheme to use comprises pH meter, conductivity meter, redox potential appearance, flow instrument, pressure transmitter, tensimeter, liquidometer etc., all can adopt existing techniques in realizing, and this paper no longer details.
The available two-position controller of device according to the invention is accomplished and is controlled; The two-position controller that uses can be selected commercially available finished product plc (PLC) for use, can realize the automatic control of entire operation process is set with artificial, can set normal operation of film unit and scavenging period at interval; Can set each valve opening and closing condition and aperture; Can set the operation flow and the pressure of each water pump through frequency transformer, all can adopt existing techniques in realizing, this paper no longer details.
Compare with conventional reverse osmosis unit, the characteristics of a kind of resistant to pollution reverse osmosis unit of the present invention and application thereof are:
(1). on the assembled arrangement of reverse osmosis membrane, no longer adopt the arrangement mode of one-level multistage, and adopt the mode of connection of many group parallel connections, set up dense water-circulating pump, the dense water of part is back to the r-o-inlet before, improve the recovery and increase crossflow velocity with this.Be arranged in parallel, dense water cycle mode compares with one-level multistage technology, its system recoveries rate can in very large range be regulated, can be in operation one or more groups r-o-is wherein cleaned respectively, but also isolated operation one or more groups film wherein.
(2). online grouping is carried out in r-o-cleaned.Through the PLC time variable control, adopt de-salted water or scavenging solution that reverse osmosis membrane is divided into groups to clean successively.Compare with the square impact that adopts on the General System, online grouping is cleaned and adopted the de-salted water flushing, and is better to pollutant removal; Simultaneously can carry out independent cleaning, can not influence the operation of whole system one or more groups film wherein.
(3). when reverse osmosis membrane moves, the intermittent reduction frequency operation of reverse osmosis high-pressure pump.Intake pressure also can reduce, and the layer of contaminants that helps being adsorbed on face is pulled away from the face desorption and with current.
(4). reductive agent and Scale inhibitors add after mouth is arranged on security personnel's filter core, add the regular impact of snack made with traditional Chinese medicines at this and add non-oxidizable sterilant, and the non-oxidizable sterilant kind of regular replacing, to prevent the microorganisms resistance.
The film precision filtering device and the method for use thereof of processing waste water of the present invention have the following advantages:
(1). under the relatively poor situation of raw water quality,, help increasing crossflow velocity, reduce the film pollution level through dense water circulation way;
(2). the part in the reverse osmosis concentrated water directly turns back to the reverse osmosis units ingress after through the pipe circle pump supercharging, has reclaimed the energy that reverse osmosis concentrated water possesses;
(3). can be implemented in whole system in service to each the group reverse osmosis membrane assembly clean respectively;
(4). can isolate or increase the part membrane module, system extension is comparatively convenient, and system defect is searched and dispose comparatively convenient.
A kind of resistant to pollution reverse osmosis unit of the present invention can be fit to the processing of various low pollutions and the former water of high pollution.Process object can be surface water, underground water, seawater, rivers and lakes water, also can be through pretreated sewage.A kind of resistant to pollution reverse osmosis unit system extension property of the present invention is good, realizes easily amplifying, and can adapt to the engineering of water treatment project of various different scales.A kind of resistant to pollution reverse osmosis unit of the present invention can effectively solve conventional reverse osmosis unit and be prone to pollute difficult shortcoming of cleaning; Realize the long-term stability operation of reverse osmosis unit, good application prospects is arranged in the water treatment field of industries such as petrochemical industry, electric power, food, medicine, electronics.
Description of drawings
Fig. 1 is a process flow diagram of the present invention
Embodiment
Below in conjunction with accompanying drawing further explain preferred embodiment of the present invention.
Embodiment 1.
Former water is the sewage that reaches the national secondary emission standard, and the water yield is 80t/h, and after pre-treatment, COD is 80mg/L, and the water inlet electricity is led≤3000 μ S/cm, and hardness is (with CaCO
3Meter) be 500mg/L, basicity is that 200mg/L is (with CaCO
3Meter).
A kind of resistant to pollution reverse osmosis unit, its integral part comprises:
Raw water box 1 is provided with suction culvert and outlet pipeline;
Topping-up pump 2, water-in is connected with the raw water box outlet pipeline, and water outlet is connected with security personnel's strainer;
Security personnel's strainer 3 is provided with suction culvert and outlet pipeline, and suction culvert is connected with the topping-up pump outlet, and outlet is connected with the HPP suction culvert;
Dosing mouth 4 is arranged on security personnel's filter outlet pipe road;
HPP 5, water-in is connected with security personnel's filter outlet pipe road, and water outlet is connected with the reverse osmosis module pressure vessel inlet;
Reverse osmosis units 6, all r-o-is equally divided into 4 groups, and wherein every group has 4 of reverse osmotic pressure force containers, and 4 of 8080 reverse osmosis membranes are arranged in every pressurized vessel, amounts to 64.
Electric/pneumatic valve 7 is arranged on the import and the outlet of every group of reverse osmosis module, through the automatic switchover of closing and opening control product water and cleaning of valve.
Reverse osmosis concentrated water-circulating pump 8, water-in is connected with reverse osmosis module 6 dense water outs, and the dense water of a water outlet part is through dense water regulating valve 9 dischargings, and a part is mixed with the water outlet of HPP 5 before being back to the reverse osmosis membrane assembly inlet.
Scavenging pump 14, water inlet connects product water tank 10 respectively and cleans water tank 11,12 by pipeline, and delivery port cleans the filter inlet of ensuring public security by the pipeline connection.
Clean security personnel's strainer water-in and be connected with the scavenging pump outlet, outlet is connected with the backwash water-in of reverse osmosis membrane unit 6 through pipeline.
On the basis of technique scheme, also comprise:
A kind of application of above-mentioned resistant to pollution reverse osmosis unit is characterized in that comprising following treatment step:
Former water in the raw water box 1 is through topping-up pump 2 superchargings, and flow is 80t/h, and pressure is 0.2MPa, gets into security personnel's strainer 3.After security personnel's strainer 3 filters, add Scale inhibitors and reductive agent at dosing mouth 4, after HPP 5 superchargings, get into reverse osmosis units 6; The HPP top hole pressure is 0.9MPa; After reverse osmosis units filtered, reverse osmosis produced discharge was 60t/h, and reverse osmosis produced water gets into and produces water tank 10; In the reverse osmosis concentrated water, after 8 superchargings of r-o-circulation line pump, the flow that is back to the water-in of reverse osmosis membrane unit 6 is 80t/h, and the concentrated stream amount of discharging is 20t/h.
In the r-o-operational process, added once non-oxidizable sterilant in per 5 days, add concentration is 40mg/L at every turn, and the time of adding is 30min; The sterilant dosing method is used alternatingly for using RH-893 and DBNPA.
On the basis of technique scheme, also comprise following on-line cleaning step:
During on-line cleaning, membrane module contained in the reverse osmosis membrane unit 6 is equally divided into 4 groups, each a group of only cleaning in order wherein, all the other each groups then keep running status.
During reverse osmosis membrane unit 6 on-line cleaning; Used scavenging solution is for producing the reverse osmosis produced water in the water tank 10; Reverse osmosis produced water filters through cleaning security personnel's filter core 15 after scavenging pump 14 aspirates, by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6; Backwash water outlet by reverse osmosis membrane unit 6 is discharged, and enters pretreatment unit (like equalizing tank, biochemistry pool or ultrafiltration membrane cisterna).
In the reverse osmosis units operational process, the 6 normal product water times of reverse osmosis units are 4h, after this clean 4 groups of reverse osmosis membranes successively with the de-salted water in the reverse osmosis produced water tank 6, and every group is cleaned flow is 40t/h, and scavenging period is 2min.After having cleaned 4 groups of reverse osmosis membranes, continue the normal water that produces.
When carrying out the r-o-cleaning, reduce the running frequency 15% of HPP, at this moment each organizes the reverse osmosis membrane operating pressure reduction that is moving, and helps the desorption of surface contaminant, and cleaning performance is better when cleaning to this group film subsequently.
When the reverse osmosis membrane inlet outlet pressure differential rises 15% the time than original state, reverse osmosis membrane is carried out matting.When reverse osmosis membrane carries out matting, also divide into groups to clean.Used scavenging solution is for cleaning the cleaning agent in the water tank 11 or 12.Scavenging solution filters through cleaning security personnel's filter core 15 after scavenging pump 13 aspirates, and by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6, is discharged by the backwash water outlet of reverse osmosis membrane unit 6, is back to and cleans water tank 11 or 12.
This device operation is produced water water quality and is: electricity is led≤50 μ S/cm, and hardness is (with CaCO
3Meter) be 1.2mg/L, COD＜1mg/L can be used as the industrial circulating water moisturizing or further is treated as boiler feedwater.The matting cycle of reverse osmosis membrane is about 3 months.
Embodiment 2.
Former water is the pretreated surface water of process, and the water yield is 200t/h, and the water inlet electricity is led≤800 μ S/cm, and hardness is (with CaCO
3Meter) be 280mg/L, basicity is that 150mg/L is (with CaCO
3Meter).
A kind of resistant to pollution reverse osmosis unit, its integral part comprises:
Raw water box 1 is provided with suction culvert and outlet pipeline;
Topping-up pump 2, water-in is connected with the raw water box outlet pipeline, and water outlet is connected with security personnel's strainer;
Security personnel's strainer 3 is provided with suction culvert and outlet pipeline, and suction culvert is connected with the topping-up pump outlet, and outlet is connected with the HPP suction culvert;
Dosing mouth 4 is arranged on security personnel's filter outlet pipe road;
HPP 5, water-in is connected with security personnel's filter outlet pipe road, and water outlet is connected with the reverse osmosis module pressure vessel inlet;
Reverse osmosis units 6, all r-o-is equally divided into 6 groups, and wherein every group has 6 of reverse osmotic pressure force containers, and 4 of 8080 reverse osmosis membranes are arranged in every pressurized vessel, amounts to 144.
Electric/pneumatic valve 7 is arranged on the import and the outlet of every group of reverse osmosis module, through the automatic switchover of closing and opening control product water and cleaning of valve.
Reverse osmosis concentrated water-circulating pump 8, water-in is connected with reverse osmosis module 6 dense water outs, and the dense water of a water outlet part is through dense water regulating valve 9 dischargings, and a part is mixed with the water outlet of HPP 5 before being back to the reverse osmosis membrane assembly inlet.
Scavenging pump 14, water inlet connects product water tank 10 respectively and cleans water tank 11,12 by pipeline, and delivery port cleans the filter inlet of ensuring public security by the pipeline connection.
Clean security personnel's strainer water-in and be connected with the scavenging pump outlet, outlet is connected with the backwash water-in of reverse osmosis membrane unit 6 through pipeline.
On the basis of technique scheme, also comprise:
A kind of application of above-mentioned resistant to pollution reverse osmosis unit is characterized in that comprising following treatment step:
Former water in the raw water box 1 is through topping-up pump 2 superchargings, and flow is 200t/h, and pressure is 0.2MPa, gets into security personnel's strainer 3.After security personnel's strainer 3 filters, add Scale inhibitors and reductive agent at dosing mouth 4, after HPP 5 superchargings, get into reverse osmosis units 6; The HPP top hole pressure is 0.8MPa; After reverse osmosis units filtered, reverse osmosis produced discharge was 170t/h, and reverse osmosis produced water gets into and produces water tank 10; In the reverse osmosis concentrated water, after 8 superchargings of r-o-circulation line pump, the flow that is back to the water-in of reverse osmosis membrane unit 6 is 160t/h, and the concentrated stream amount of discharging is 30t/h.
On the basis of technique scheme, also comprise following on-line cleaning step:
During on-line cleaning, membrane module contained in the reverse osmosis membrane unit 6 is equally divided into 6 groups, each a group of only cleaning in order wherein, all the other each groups then keep running status.
During reverse osmosis membrane unit 6 on-line cleaning; Used scavenging solution is for producing the reverse osmosis produced water in the water tank 10; Reverse osmosis produced water filters through cleaning security personnel's filter core 15 after scavenging pump 14 aspirates, by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6; Backwash water outlet by reverse osmosis membrane unit 6 is discharged, and enters pretreatment unit (like equalizing tank, biochemistry pool or ultrafiltration membrane cisterna).
In the reverse osmosis units operational process, the 6 normal product water times of reverse osmosis units are 8h, after this clean 4 groups of reverse osmosis membranes successively with the de-salted water in the reverse osmosis produced water tank 6, and every group is cleaned flow is 70t/h, and scavenging period is 2min.After having cleaned 4 groups of reverse osmosis membranes, continue the normal water that produces.
In the r-o-operational process, added once non-oxidizable sterilant in per 8 days, add concentration is 30mg/L at every turn, and the time of adding is 20min; The sterilant dosing method is used alternatingly for using RH-893 and DBNPA.
When carrying out the r-o-cleaning, reduce the running frequency 15% of HPP, at this moment each organizes the reverse osmosis membrane operating pressure reduction that is moving, and helps the desorption of surface contaminant, and cleaning performance is better when cleaning to this group film subsequently.
When the reverse osmosis membrane inlet outlet pressure differential rises 15% the time than original state, reverse osmosis membrane is carried out matting.When reverse osmosis membrane carries out matting, also divide into groups to clean.Used scavenging solution is for cleaning the cleaning agent in the water tank 11 or 12.Scavenging solution filters through cleaning security personnel's filter core 15 after scavenging pump 13 aspirates, and by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6, is discharged by the backwash water outlet of reverse osmosis membrane unit 6, is back to and cleans water tank 11 or 12.
This device operation is produced water water quality and is: electricity is led≤10 μ S/cm, and hardness is (with CaCO
3Meter) be 0.5mg/L, COD＜1mg/L.Can be used as industrial civilian pure water and use, also can further handle as boiler feedwater.The matting cycle of reverse osmosis membrane is about 6 months.
Claims (14)
1. a resistant to pollution reverse osmosis unit is characterized in that comprising the raw water box 1, topping-up pump 2, security personnel's strainer 3, dosing mouth 4, HPP 5, the reverse osmosis units 6 that link to each other successively; The outlet of reverse osmosis membrane unit 6 connects through pipeline produces water tank 10, and the backwash water outlet of reverse osmosis membrane unit 6 is connected to through branch line and cleans water tank 11,12 or discharging; Scavenging pump 13 water-ins connect product water tank 10 respectively and clean water tank 11,12 through pipeline, and water outlet connects cleaning security personnel filter inlet through pipeline; Clean security personnel's strainer water-in and be connected with the scavenging pump outlet, outlet is connected with the backwash water-in of reverse osmosis membrane unit 6 through pipeline; Electric/pneumatic valve 7 is arranged on the import and the outlet of every group of reverse osmosis module; Reverse osmosis membrane in the reverse osmosis membrane unit 6 adopts the mode of connection of many group parallel connections; Reverse osmosis concentrated water-circulating pump 8 water-ins are connected with reverse osmosis module 6 dense water outs; The dense water of a water outlet part is through dense water regulating valve 9 dischargings, and a part is mixed with the water outlet of HPP 5 before being back to the reverse osmosis membrane assembly inlet.
2. a kind of resistant to pollution reverse osmosis unit according to claim 1; It is characterized in that in the reverse osmosis units that the group number of reverse osmosis units is 2～8 groups, every group pressurized vessel number is 1～20; The membrane module number of every pressurized vessel is 1～6; Preferred r-o-group number is 4～6 groups, and the pressurized vessel number is 1～8, and preferred every pressurized vessel membrane module number is 4～6.
3. the method for use of a resistant to pollution reverse osmosis unit; Comprise following steps: the former water in the raw water box 1 gets into security personnel's strainer 3 through topping-up pump 2 superchargings, after security personnel's strainer 3 filters; Add required medicament at dosing mouth 4; After HPP 5 superchargings, get into reverse osmosis units 6, after reverse osmosis units filtered, reverse osmosis produced water got into and produces water tank 10; A reverse osmosis concentrated water part is back to the water-in of reverse osmosis membrane unit 6 through r-o-circulation line pump 8, and another part emits or gets into other treatment systems and further handles.
A kind of resistant to pollution reverse osmosis unit according to claim 3 method of use, it is characterized in that when reverse osmosis membrane moves the intermittent reduction frequencies operation of reverse osmosis high-pressure pump 5.
A kind of resistant to pollution reverse osmosis unit according to claim 3 method of use; It is characterized in that in the reverse osmosis produced water operation; The reverse osmosis concentrated water circular flow is 0～3 times of flooding velocity, and preferred dense water cycle flow is 0.5～2 times of flooding velocity.
A kind of resistant to pollution reverse osmosis unit according to claim 3 method of use; It is characterized in that in the reverse osmosis produced water operation; The sterilant dosing method replaces sterilization for using two kinds of non-oxidizable sterilant; Added once in per 1～10 day, add concentration is 10～100mg/L at every turn, and the time of adding is 10～60min at every turn. Preferred sterilant dosing method is used alternatingly for using RH-893 and DBNPA, adds once in per 3～8 days, and add concentration is 40mg/L at every turn, and the time of adding is 15～40min at every turn.
A kind of resistant to pollution reverse osmosis unit according to claim 3 method of use, it is characterized in that in r-o-on-line cleaning operation when using de-salted water to clean, scavenging period is spaced apart 0.5～24h, preferred scavenging period is spaced apart 2～6h.
A kind of resistant to pollution reverse osmosis unit according to claim 3 method of use; It is characterized in that comprising following on-line cleaning step: during on-line cleaning; Contained membrane module is equally divided into some groups in the reverse osmosis membrane unit 4; Each a group of only cleaning in order wherein, all the other each groups then keep running status; During reverse osmosis membrane unit 6 on-line cleaning; Used scavenging solution is for producing the reverse osmosis produced water in the water tank 10; Reverse osmosis produced water filters through cleaning security personnel's filter core 15 after scavenging pump 14 aspirates, by the backwash water-in entering reverse osmosis membrane unit 6 of reverse osmosis membrane unit 6; Backwash water outlet by reverse osmosis membrane unit 6 is discharged, and enters pretreatment unit (like equalizing tank, biochemistry pool or ultrafiltration membrane cisterna).
A kind of resistant to pollution reverse osmosis unit according to claim 11 method of use; It is characterized in that reductive agent and Scale inhibitors add the mouth be arranged on security personnel filter core after; Add the regular impact of snack made with traditional Chinese medicines at this and add non-oxidizable sterilant, and the non-oxidizable sterilant kind of regular replacing.
A kind of resistant to pollution reverse osmosis unit according to claim 11 method of use; It is characterized in that in the operation of r-o-on-line cleaning; Cleaning flow is single 1～6 times of organizing the reverse osmosis produced water yield, preferably cleans flow 2～3 times for the reverse osmosis produced water yield of single group.
11. a kind of resistant to pollution reverse osmosis unit according to claim 11 method of use; It is characterized in that the pH scope of pickling is 2.0～4.0 in the operation of r-o-on-line cleaning, the pH scope of alkali cleaning is 10.0～12.0; Preferred cleaning pH value is pickling 2～2.5, alkali cleaning 11.5～12.
12. a kind of resistant to pollution reverse osmosis unit according to claim 11 method of use; It is characterized in that carrying out in the cleaning operation in r-o-; The more original frequency of reverse osmosis high-pressure pump reduces by 5%～30%, and preferred HPP frequency reduces by 15%～20% for more original frequency.
13. a kind of resistant to pollution reverse osmosis unit according to claim 3 method of use; When it is characterized in that comprising matting, used scavenging solution is for cleaning the cleaning agent in the water tank 11 or 12, and scavenging solution is after scavenging pump 13 suctions; Filter through cleaning security personnel's filter core 15; Backwash water-in by reverse osmosis membrane unit 6 gets into reverse osmosis membrane unit 6, is discharged by the backwash water outlet of reverse osmosis membrane unit 6, is back to and cleans water tank 11 or 12.
14. a kind of resistant to pollution reverse osmosis unit according to claim 16 method of use; When it is characterized in that reverse osmosis membrane carries out matting; Cleaning flow is single 1～6 times of organizing the reverse osmosis produced water yield, preferably cleans flow 3～4 times for the reverse osmosis produced water yield of single group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105267275A CN102452704A (en) | 2010-11-01 | 2010-11-01 | Anti-pollution reverse osmosis device and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105267275A CN102452704A (en) | 2010-11-01 | 2010-11-01 | Anti-pollution reverse osmosis device and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102452704A true CN102452704A (en) | 2012-05-16 |
Family
ID=46036447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105267275A Pending CN102452704A (en) | 2010-11-01 | 2010-11-01 | Anti-pollution reverse osmosis device and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102452704A (en) |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755078A (en) * | 2014-02-18 | 2014-04-30 | 成都美富特膜科技有限公司 | Washing and cleaning dual-purpose sewage treatment system and control method thereof |
| CN103771627A (en) * | 2014-02-18 | 2014-05-07 | 成都美富特膜科技有限公司 | Container type sewage treatment system |
| CN104355429A (en) * | 2014-11-10 | 2015-02-18 | 珠海格力电器股份有限公司 | Water purification system with antibacterial function |
| CN104402094A (en) * | 2014-12-17 | 2015-03-11 | 北京碧水源膜科技有限公司 | Energy-saving and pollution-resisting water treatment system provided with RO (reverse osmosis) membranes and application of water treatment system |
| CN104841283A (en) * | 2014-11-29 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | On-line cleaning device for reverse osmosis membrane |
| CN104973657A (en) * | 2014-04-01 | 2015-10-14 | 杭州上拓环境科技有限公司 | Novel reverse osmosis membrane treatment system for dyeing wastewater advanced treatment |
| CN105413477A (en) * | 2015-11-12 | 2016-03-23 | 中联重科股份有限公司 | Membrane module performance detection equipment |
| CN105523609A (en) * | 2016-01-04 | 2016-04-27 | 陕西省石油化工研究设计院 | Reverse-flow-free nanofiltration apparatus or reverse osmosis apparatus and shutdown method thereof |
| CN106186195A (en) * | 2016-08-29 | 2016-12-07 | 天津市尚拓环保科技有限公司 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
| CN106348390A (en) * | 2016-08-26 | 2017-01-25 | 中电环保股份有限公司 | Microbial pollution resisting method and microbial pollution resisting device for anti-penetration equipment |
| CN106698719A (en) * | 2016-12-29 | 2017-05-24 | 广州达意隆包装机械股份有限公司 | Water treatment system with synchronous in-situ cleaning function |
| CN107824048A (en) * | 2017-11-21 | 2018-03-23 | 河南师范大学 | A kind of sewage-treatment plant and its operation method for improving membrane filtration system performance |
| CN109133395A (en) * | 2017-06-16 | 2019-01-04 | 江苏立业环境科技有限公司 | A kind of water treatment reverse osmosis device |
| CN109607686A (en) * | 2019-01-22 | 2019-04-12 | 河南省星碟节能科技有限公司 | Reverse osmosis monitoring and intelligent online cleaning system |
| CN110294551A (en) * | 2019-07-31 | 2019-10-01 | 重庆三峰科技有限公司 | A kind of percolate reverse osmosis treatment system and its process flow |
| CN110510767A (en) * | 2019-09-27 | 2019-11-29 | 华电水务工程有限公司 | A kind of multi-section circulation formula rolled film super-pressure counter-infiltration system and control method |
| CN110723784A (en) * | 2019-10-16 | 2020-01-24 | 东莞市鸾江水处理设备工程有限公司 | Wastewater treatment and recovery method |
| CN111484162A (en) * | 2020-04-17 | 2020-08-04 | 莱特莱德（北京）环境技术股份有限公司 | Oil refinery condensed water oil removing system and oil removing method thereof |
| CN113307394A (en) * | 2021-05-19 | 2021-08-27 | 山西太钢不锈钢股份有限公司 | RO online sterilization system and method |
| CN114751540A (en) * | 2021-12-17 | 2022-07-15 | 南京中电环保水务有限公司 | Shale gas fracturing flow-back fluid waste water decrement integrates processing system |
| CN114988597A (en) * | 2022-07-15 | 2022-09-02 | 金科环境股份有限公司 | Anti-pollution reverse osmosis membrane filtering system |
| CN115253681A (en) * | 2022-07-13 | 2022-11-01 | 中国核电工程有限公司 | Operation control method and operation control module of reverse osmosis device |
| CN115350595A (en) * | 2022-08-01 | 2022-11-18 | 北京天玛智控科技股份有限公司 | Underground self-cleaning reverse osmosis device and control method |
| TWI791884B (en) * | 2018-08-23 | 2023-02-11 | 日商栗田工業股份有限公司 | Slime suppression method for reverse osmosis membrane device |
| CN115784379A (en) * | 2022-12-14 | 2023-03-14 | 上海环境卫生工程设计院有限公司 | Membrane circulation system of uniform water distribution |
| CN115920635A (en) * | 2023-01-05 | 2023-04-07 | 寿光北控水务有限公司 | Multi-section semipermeable membrane device with function of internal energy return and backflow in sections and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837068A (en) * | 2005-03-23 | 2006-09-27 | 佛山市美的日用家电集团有限公司 | Water purifying device |
| CN2905777Y (en) * | 2006-05-30 | 2007-05-30 | 国家海洋局天津海水淡化与综合利用研究所 | Agricultural saline water desalination device |
| CN201010557Y (en) * | 2006-10-13 | 2008-01-23 | 天津市正方科技发展有限公司 | Secondary pollution proof direct drinking system with chlorine dioxide generator |
| CN201406355Y (en) * | 2009-05-04 | 2010-02-17 | 安徽天健水处理设备有限公司 | Vehicle-carrying movable reclaimed water treatment device |
-
2010
- 2010-11-01 CN CN2010105267275A patent/CN102452704A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837068A (en) * | 2005-03-23 | 2006-09-27 | 佛山市美的日用家电集团有限公司 | Water purifying device |
| CN2905777Y (en) * | 2006-05-30 | 2007-05-30 | 国家海洋局天津海水淡化与综合利用研究所 | Agricultural saline water desalination device |
| CN201010557Y (en) * | 2006-10-13 | 2008-01-23 | 天津市正方科技发展有限公司 | Secondary pollution proof direct drinking system with chlorine dioxide generator |
| CN201406355Y (en) * | 2009-05-04 | 2010-02-17 | 安徽天健水处理设备有限公司 | Vehicle-carrying movable reclaimed water treatment device |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755078B (en) * | 2014-02-18 | 2016-03-30 | 成都美富特膜科技有限公司 | Rush clear dual-purpose type Sewage treatment systems and control method thereof |
| CN103755078A (en) * | 2014-02-18 | 2014-04-30 | 成都美富特膜科技有限公司 | Washing and cleaning dual-purpose sewage treatment system and control method thereof |
| CN103771627B (en) * | 2014-02-18 | 2015-07-08 | 成都美富特膜科技有限公司 | Container type sewage treatment system |
| CN103771627A (en) * | 2014-02-18 | 2014-05-07 | 成都美富特膜科技有限公司 | Container type sewage treatment system |
| CN104973657A (en) * | 2014-04-01 | 2015-10-14 | 杭州上拓环境科技有限公司 | Novel reverse osmosis membrane treatment system for dyeing wastewater advanced treatment |
| CN104355429A (en) * | 2014-11-10 | 2015-02-18 | 珠海格力电器股份有限公司 | Water purification system with antibacterial function |
| CN104841283A (en) * | 2014-11-29 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | On-line cleaning device for reverse osmosis membrane |
| CN104402094A (en) * | 2014-12-17 | 2015-03-11 | 北京碧水源膜科技有限公司 | Energy-saving and pollution-resisting water treatment system provided with RO (reverse osmosis) membranes and application of water treatment system |
| CN105413477A (en) * | 2015-11-12 | 2016-03-23 | 中联重科股份有限公司 | Membrane module performance detection equipment |
| CN105523609A (en) * | 2016-01-04 | 2016-04-27 | 陕西省石油化工研究设计院 | Reverse-flow-free nanofiltration apparatus or reverse osmosis apparatus and shutdown method thereof |
| CN105523609B (en) * | 2016-01-04 | 2018-06-08 | 陕西省石油化工研究设计院 | A kind of no reverse flow nanofiltration device or reverse osmosis unit and its closing method |
| CN106348390A (en) * | 2016-08-26 | 2017-01-25 | 中电环保股份有限公司 | Microbial pollution resisting method and microbial pollution resisting device for anti-penetration equipment |
| CN106186195A (en) * | 2016-08-29 | 2016-12-07 | 天津市尚拓环保科技有限公司 | Improve reverse osmosis water disposal facility and the method for treating water of the reverse osmosis response rate |
| CN106698719A (en) * | 2016-12-29 | 2017-05-24 | 广州达意隆包装机械股份有限公司 | Water treatment system with synchronous in-situ cleaning function |
| CN109133395A (en) * | 2017-06-16 | 2019-01-04 | 江苏立业环境科技有限公司 | A kind of water treatment reverse osmosis device |
| CN107824048A (en) * | 2017-11-21 | 2018-03-23 | 河南师范大学 | A kind of sewage-treatment plant and its operation method for improving membrane filtration system performance |
| TWI791884B (en) * | 2018-08-23 | 2023-02-11 | 日商栗田工業股份有限公司 | Slime suppression method for reverse osmosis membrane device |
| CN109607686A (en) * | 2019-01-22 | 2019-04-12 | 河南省星碟节能科技有限公司 | Reverse osmosis monitoring and intelligent online cleaning system |
| CN110294551A (en) * | 2019-07-31 | 2019-10-01 | 重庆三峰科技有限公司 | A kind of percolate reverse osmosis treatment system and its process flow |
| CN110294551B (en) * | 2019-07-31 | 2024-02-09 | 重庆三峰科技有限公司 | Reverse osmosis treatment system for percolate and process flow thereof |
| CN110510767A (en) * | 2019-09-27 | 2019-11-29 | 华电水务工程有限公司 | A kind of multi-section circulation formula rolled film super-pressure counter-infiltration system and control method |
| CN110723784A (en) * | 2019-10-16 | 2020-01-24 | 东莞市鸾江水处理设备工程有限公司 | Wastewater treatment and recovery method |
| CN110723784B (en) * | 2019-10-16 | 2022-04-15 | 东莞市鸾江水处理设备工程有限公司 | Wastewater treatment and recovery method |
| CN111484162A (en) * | 2020-04-17 | 2020-08-04 | 莱特莱德（北京）环境技术股份有限公司 | Oil refinery condensed water oil removing system and oil removing method thereof |
| CN113307394A (en) * | 2021-05-19 | 2021-08-27 | 山西太钢不锈钢股份有限公司 | RO online sterilization system and method |
| CN114751540A (en) * | 2021-12-17 | 2022-07-15 | 南京中电环保水务有限公司 | Shale gas fracturing flow-back fluid waste water decrement integrates processing system |
| CN115253681A (en) * | 2022-07-13 | 2022-11-01 | 中国核电工程有限公司 | Operation control method and operation control module of reverse osmosis device |
| CN114988597A (en) * | 2022-07-15 | 2022-09-02 | 金科环境股份有限公司 | Anti-pollution reverse osmosis membrane filtering system |
| CN115350595A (en) * | 2022-08-01 | 2022-11-18 | 北京天玛智控科技股份有限公司 | Underground self-cleaning reverse osmosis device and control method |
| CN115784379A (en) * | 2022-12-14 | 2023-03-14 | 上海环境卫生工程设计院有限公司 | Membrane circulation system of uniform water distribution |
| CN115920635A (en) * | 2023-01-05 | 2023-04-07 | 寿光北控水务有限公司 | Multi-section semipermeable membrane device with function of internal energy return and backflow in sections and method |
| CN115920635B (en) * | 2023-01-05 | 2024-02-20 | 寿光北控水务有限公司 | Multi-section semipermeable membrane device and method with in-section energy return and reflux functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102452704A (en) | Anti-pollution reverse osmosis device and use method thereof | |
| CN102329018B (en) | Device for desalting sea water by low-pressure membrane method | |
| CN103212300B (en) | Cleaning method of ultrafiltration membrane in sea water desalination by whole membrane technology | |
| CN105152399A (en) | Reverse osmosis container-type sea water desalination plant and water producing process thereof | |
| CN101367586B (en) | Desalting method for sewage water from oil production | |
| CN102674590A (en) | Method for treating and recycling heavy metal wastewater by double-membrane process | |
| CN105903355A (en) | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system | |
| CN200958059Y (en) | Reverse osmose water purifier | |
| CN212504258U (en) | Secondary pure water reverse osmosis equipment | |
| CN205222857U (en) | Reverse osmosis container formula sea water desalination device | |
| CN202430070U (en) | Heavy metal wastewater treatment and recycling equipment using two-membrane process | |
| CN204111494U (en) | A kind of device for purifying potable water being applicable to offshore engineering boats and ships | |
| CN202208665U (en) | Circuit board cleaning wastewater recycling system | |
| CN200971324Y (en) | High efficient energy-saving water treatment equipment | |
| CN203768136U (en) | Scale-inhibition and corrosion-inhibition treatment system for gas drainage pump circulating water | |
| CN112694182A (en) | Anti-sedimentation mine water purification treatment system | |
| CN207596632U (en) | A kind of salted egg salting liquid recycling equipment | |
| CN106007040A (en) | Heavy metal wastewater treatment system and method | |
| CN206886868U (en) | Desalting water treatment device for surface water | |
| CN206680224U (en) | Double-circuit counter-infiltration cleaning system | |
| CN213537480U (en) | Water preparation equipment for pipeline direct drinking water | |
| CN201380045Y (en) | Pretreatment device and reverse osmosis desalination apparatus for desalination of mine water | |
| CN211141709U (en) | Water treatment system for purifying water | |
| CN202297261U (en) | Sea water desalination device using low-pressure membrane method | |
| CN209957551U (en) | Reclaimed water treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120516 |