CN202729914U - Low-yield dual-pump two-stage reverse osmosis system - Google Patents
Low-yield dual-pump two-stage reverse osmosis system Download PDFInfo
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- CN202729914U CN202729914U CN201220423498.9U CN201220423498U CN202729914U CN 202729914 U CN202729914 U CN 202729914U CN 201220423498 U CN201220423498 U CN 201220423498U CN 202729914 U CN202729914 U CN 202729914U
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- reverse osmosis
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Abstract
The utility model relates to a low-yield dual-pump two-stage reverse osmosis system. Pretreated running water is connected with a first-stage reverse osmosis membrane set through a first-stage booster pump. A concentrated water collecting outlet pipeline of the first-stage reverse osmosis membrane set is sequentially and serially connected with a first-stage pressure gauge and a first-stage waste water proportional valve. The first-stage waste proportional valve is in parallel connection with a washing electromagnetic valve and then connected with a concentrated water outlet. A first-stage pure water collecting outlet pipeline of the first-stage reverse osmosis membrane set is connected with a water inlet of a second-stage reverse osmosis membrane set through a second-stage booster pump. Collected waste water of the second-stage reverse osmosis membrane set flows back to a water inlet of the first-stage booster pump through a second-stage proportional valve. A second-stage pure water collecting outlet pipeline of the second-stage reverse osmosis membrane set is sequentially and serially connected with a water quality monitoring instrument and a producing water quality control valve. Qualified producing water and unqualified producing water after quality control flows out through two outlets of the producing water quality control valve respectively. By the low-yield dual-pump two-stage reverse osmosis system, producing water quality can reach standards fast, long-term stability of the producing water quality is achieved, recovery reaches at least 30%, complex pretreating processes are not needed, salt removing rate can stably reach more than 99%, and double reduction of water producing cost is achieved.
Description
Technical field
The utility model relates to the miniature water purification system, refers in particular to a kind of small-sized (12-40LPM) water purification system.
Background technology
Existing miniature water purification system extensively adopts reverse osmosis technology in elementary purification phase, structure space and cost and design difficulty consideration based on mini-system, extensively adopt at present single-stage reverse osmosis (single-stage RO) technique, although and this technology is used the purpose that can reach equally removal 90% above mineral ion, organism and particulate, has following disadvantage:
1) when tackling than the supersalinity water source, single-stage RO system ratio of desalinization can't guarantee enough ratio of desalinization---based on the desalination characteristic of reverse osmosis membrane self take clearance as standard, the saltiness that its saltiness of producing water also can be followed entry improves and corresponding the raising, when fixing certain index, can't reach both fixed output quota water conductivity standards; Because it is also higher to produce water water quality saltiness (ionic concn), if back segment also need carry out degree of depth purifying, such as using ion-exchange techniques, also can directly reduce treatment capacity and the use effect phase of ion exchange resin;
2) produce water quality stabilizing not good---many impacts such as the product water water quality of single-stage reverse osmosis system is stressed simultaneously, temperature, PH in case conditional fluctuation produces water water quality with rapid fluctuations, and need the longer time again stable;
In addition, also have the technology of similar small-sized double-stage reverse osmosis (twin-stage RO) design to be applied in the miniature water purification system, but they there are the following problems usually:
1) rate of recovery is not high---because being product water (common single the film rate of recovery between 15-30%) with the first-stage reverse osmosis film, double-stage reverse osmosis designs as the entry of two-pass reverse osmosis film, the method certainly will cause the recovery utilization rate of entire system extremely low, for compact simplified double-stage reverse osmosis system, the entire system rate of recovery is no more than 15-20% usually;
2) wearing quality and reliability are not high---because mini-system is different from industrial system, principle based on economy and practicality, the preprocessing process of its former water is simple, the controllability of system operational parameters is lower, and usually former water is not softened, cause membrane filtration system may be in for a long time imperfect (even abominable) state work, easily bring out the problem of fouling, dirty stifled, degradation, therefore often the life-span is not high, producing water water quality equally can not be steady in a long-term;
3) system design is complicated---and some small-sized twin-stage reverse osmosis system designs with reference to industrial system, cause system very complicated, cost significantly improves, and the economic benefit that therefore produces is not obvious, simultaneously, the complicacy of system has been brought a lot of inconvenience to the operation and maintenance of unprofessional user.
The utility model content
For the weak point that prior art exists, the utility model provides abortion amount double pump type double-stage reverse osmosis system a kind of simple in structure, with low cost.This system can guarantee to produce the water water quality reaching standard fast and long-term stability in the face of supersalinity and various complicated water source; The rate of recovery 〉=30%; Pretreatment technology that need not be complicated, the most general 5um Filament-wound Machine+gac filtration can be as system's entry; Equipment with high desalinization can be stabilized in more than 99%; (make such as the laboratory ultrapure water) in the special applications, significantly reduce the working load of back segment deep layer purifying filtrate (ion-exchange), in the prolongs life cycle, reduce at double water producing cost.
For achieving the above object, technical solutions of the utility model are:
Abortion amount double pump type double-stage reverse osmosis system, it is characterized in that: this system comprises first-stage reverse osmosis film group and the two-pass reverse osmosis film group that communicates, and described first-stage reverse osmosis film group and two-pass reverse osmosis film group are propped up reverse osmosis membrane by the list that communicates continuously more than two and formed; Pretreated tap water connects first-stage reverse osmosis film group through one-level booster pump, the dense water of this first-stage reverse osmosis film group compiles outlet conduit and sequentially is in series with first class pressure table and one-level waste water proportional valve, connects the concentrated water discharge mouth behind this one-level waste water proportional valve scouring electromagnetic valve in parallel; The one-level pure water of this first-stage reverse osmosis film compiles outlet conduit connects two-pass reverse osmosis film group behind 1 two stage supercharging pump water inlet; The waste water of two-pass reverse osmosis film group compiles by 1 secondary waste water proportional valve and is back to the one-level booster pump water inlet; The secondary pure water of two-pass reverse osmosis film group compiles the outlet conduit water quality measurement instrument and of sequentially connecting and produces water quality control valve, defective product water through the Quality Control of water quality measurement instrument is gone to the concentrated water discharge mouth from an outlet of producing water quality control valve, and qualified product water flows out via another outlet of producing water quality control valve.
Further, be provided with a check valve A between secondary waste water proportional valve and the one-level booster pump, be provided with the secondary pressure table between secondary waste water proportional valve and the two-pass reverse osmosis film.
Further, be provided with a check valve B between two-pass reverse osmosis film group and the water quality measurement instrument.
Further, be provided with a check valve C between product water quality control valve and the concentrated water discharge mouth.
The usefulness that the utility model is compared with currently available products is:
Relative single-stage reverse osmosis system---
1) increases by one group of membrane element, and the model specification of pump, film has been done definition and requirement, increased simultaneously an adjustable waste water proportional valve;
2) use 2 groups of (rather than traditional one group) waste water controlling elementss, to realize the pressure-controlling to secondary film system;
3) has the bypass design that the dense water of secondary is recycled;
4) inlet pressure that increases the two-pass reverse osmosis film is indicated;
5) do not need special former water pre-treatment means (or filtrate).
Relatively traditional double-stage reverse osmosis system---
1) two topping-up pump designs are fit to output 12-40L/H system;
2) there be not middle water tank and the tank level control system thereof of producing;
3) the film assembly is closed simple for process;
4) easy flow regulating control system;
5) there is not middle water quality meter;
6) regulate or degas system (peer machine) without PH;
7) do not need special former water pre-treatment means (or filtrate).
Use the utility model abortion amount double pump type double-stage reverse osmosis system, have the following advantages:
1) fully compatible the most general pretreating scheme and universal accessories type;
2) the various former water conditions product water of reply are stable, can under the various tap water conditions more than 99% of surpassing, guarantee to produce water through long-term checking and reach three grades of water quality standards of GB6682-(specific conductivity≤5us/cm), and steady in a long-term, the membrane module life-span is not less than 2-3 (under the normally replacing condition of preprocessing filter element) usually; Solve the conventional reverse osmosis system must change technique when the diversified water condition of reply problem, simultaneously, also solved reverse osmosis produced water only can can't be guaranteed with clearance the water production rate index as index problem;
3) produce water water quality and significantly improve (take specific conductivity as example, its output pure water conductivity is than the low 50-90% of like product), can reduce by this consuming cost of back segment (take ion exchange resin as example) mixed bed even depth purifying filtrate to original 10-50%;
4) the product water quality stabilizing is quick, reaches standard in tens of seconds even several seconds, has significantly reduced the discharging of substandard product water;
5) the small capacity double level system that the rate of recovery is relatively traditional improves 30-50%, has improved utilization ratio, has significantly reduced the waste of water resources.
Description of drawings
Fig. 1 is the utility model reverse osmosis system process flow diagram.
Embodiment
Abortion amount double pump type double-stage reverse osmosis system as shown in Figure 1, this system comprises first-stage reverse osmosis film group and the two-pass reverse osmosis film group that communicates, and described first-stage reverse osmosis film group and two-pass reverse osmosis film group are propped up reverse osmosis membrane by the list that communicates continuously more than two and formed.
Through the tap water (flow 〉=2.5LPM after the pre-treatment (being generally interior 5um polypropylene fibre winded filtering core of effect phase+granulated active carbon filter core); pressure 〉=1bar); sequentially through source water pressure switch, entering water electromagnetic valve; (list of 3 series connection props up reverse osmosis membrane by entering first-stage reverse osmosis film group after one-level booster pump (flow 〉=target output * 3 5bar) supercharging; 25 ℃ of cumulative productions 〉=target output * 1.5@, operating pressure
50-60psi, single reverse osmosis membrane ratio of desalinization 〉=96%).
The dense water of first-stage reverse osmosis film group compiles installs the first class pressure table on the outlet conduit, then be connected to one-level waste water proportional valve (adjustable), connects the concentrated water discharge mouth behind this one-level waste water proportional valve scouring electromagnetic valve in parallel, and final dense water is discharged.This scouring electromagnetic valve is used for the flushing maintenance of start by set date reverse osmosis membrane.
The one-level pure water of this first-stage reverse osmosis film group compiles outlet conduit and connects a two stage supercharging pump (flow ≈ target output * 1.5@5bar), (list of 2 series connection props up reverse osmosis membrane to pure water to two-pass reverse osmosis film group after the supercharging of two stage supercharging pump, 25 ℃ of cumulative productions=target output@, operating pressure
50-60psi, single reverse osmosis membrane ratio of desalinization 〉=96%) water inlet.
Sequentially passing through secondary proportional valve (adjustable or fixing), check valve A after the waste water of two-pass reverse osmosis film compiles is back to the one-level booster pump water inlet and recycles.
The secondary pure water of two-pass reverse osmosis film group compiles sequentially connect a check valve B, water quality measurement instrument (conductivitimeter) of outlet conduit and carries out Quality Control, then is connected to and produces water quality control valve, and producing water quality control valve is a three-way diverter valve.Defective product water through the Quality Control of water quality measurement instrument will be gone to the concentrated water discharge mouth from an outlet of producing water quality control valve, and qualified product water will be according to flowing out via another outlet of producing water quality control valve.
The key of the utility model abortion amount double pump type double-stage reverse osmosis system design is to select the pump, the membrane element that mate.Simultaneously, according to the operating pressure of following policy setting I and II reverse osmosis membrane group, first-stage reverse osmosis film group is set to 5-6bar usually, and two-pass reverse osmosis film group is set as 4-5bar.The setting of two-pass reverse osmosis film group pressure also can realize by selecting suitable fixed waste water proportional valve.GPRS system concentrated water drainage high-volume is not less than system throughput * 2 in the first-stage reverse osmosis film group pressure regulate process, and so the condition overdraft is too high, can consider to use former water reducing valve suitably to reduce former water pressure to 1-2bar.The flushing maintenance shop of system recommendations moves unlatching in 3-4 hour once every being at least lasting energising 12 hours/time or every accumulative total.
Claims (5)
1. abortion amount double pump type double-stage reverse osmosis system, it is characterized in that: this system comprises first-stage reverse osmosis film group and the two-pass reverse osmosis film group that communicates, and described first-stage reverse osmosis film group and two-pass reverse osmosis film group are propped up reverse osmosis membrane by the list that communicates continuously more than two and formed; Pretreated tap water connects first-stage reverse osmosis film group through one-level booster pump, the dense water of this first-stage reverse osmosis film group compiles outlet conduit and sequentially is in series with first class pressure table and one-level waste water proportional valve, connects the concentrated water discharge mouth behind this one-level waste water proportional valve scouring electromagnetic valve in parallel; The one-level pure water of this first-stage reverse osmosis film compiles outlet conduit connects two-pass reverse osmosis film group behind 1 two stage supercharging pump water inlet; The waste water of two-pass reverse osmosis film group compiles by 1 secondary waste water proportional valve and is back to the one-level booster pump water inlet; The secondary pure water of two-pass reverse osmosis film group compiles the outlet conduit water quality measurement instrument and of sequentially connecting and produces water quality control valve, defective product water through the Quality Control of water quality measurement instrument is gone to the concentrated water discharge mouth from an outlet of producing water quality control valve, and qualified product water flows out via another outlet of producing water quality control valve.
2. abortion amount double pump type double-stage reverse osmosis as claimed in claim 1 system is characterized in that: be provided with a check valve A between secondary waste water proportional valve and the one-level booster pump, be provided with the secondary pressure table between secondary waste water proportional valve and the two-pass reverse osmosis film.
3. abortion amount double pump type double-stage reverse osmosis as claimed in claim 1 or 2 system is characterized in that: be provided with a check valve B between two-pass reverse osmosis film group and the water quality measurement instrument.
4. abortion amount double pump type double-stage reverse osmosis as claimed in claim 1 or 2 system is characterized in that: produce between water quality control valve and the concentrated water discharge mouth and be provided with a check valve C.
5. abortion amount double pump type double-stage reverse osmosis as claimed in claim 3 system is characterized in that: produce between water quality control valve and the concentrated water discharge mouth and be provided with a check valve C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220423498.9U CN202729914U (en) | 2012-08-24 | 2012-08-24 | Low-yield dual-pump two-stage reverse osmosis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220423498.9U CN202729914U (en) | 2012-08-24 | 2012-08-24 | Low-yield dual-pump two-stage reverse osmosis system |
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| CN202729914U true CN202729914U (en) | 2013-02-13 |
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| CN201220423498.9U Expired - Lifetime CN202729914U (en) | 2012-08-24 | 2012-08-24 | Low-yield dual-pump two-stage reverse osmosis system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626310A (en) * | 2012-08-24 | 2014-03-12 | 岳勇斌 | Low-yield dual-pump two-stage reverse osmosis system |
| CN111924936A (en) * | 2019-12-31 | 2020-11-13 | 厦门锐思捷水纯化技术有限公司 | Water softening system salt deficiency diagnosis method |
-
2012
- 2012-08-24 CN CN201220423498.9U patent/CN202729914U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626310A (en) * | 2012-08-24 | 2014-03-12 | 岳勇斌 | Low-yield dual-pump two-stage reverse osmosis system |
| CN111924936A (en) * | 2019-12-31 | 2020-11-13 | 厦门锐思捷水纯化技术有限公司 | Water softening system salt deficiency diagnosis method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160720 Address after: 361000, Fujian, Xiamen torch hi tech Zone (Xiangan) Industrial Zone Jianye Building B block 602, 603, 604, 605 room Patentee after: XIAMEN RSJ WATER PURIFICATION TECHNOLOGY CO.,LTD. Address before: Siming District of Jiahe city Xiamen road 361000 Fujian province No. 341 room 2707 Patentee before: Yue Yongbin |
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| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
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| CX01 | Expiry of patent term |