CN202729915U - Low-yield single-pump two-stage reverse osmosis system - Google Patents
Low-yield single-pump two-stage reverse osmosis system Download PDFInfo
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- CN202729915U CN202729915U CN201220425436.1U CN201220425436U CN202729915U CN 202729915 U CN202729915 U CN 202729915U CN 201220425436 U CN201220425436 U CN 201220425436U CN 202729915 U CN202729915 U CN 202729915U
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Abstract
The utility model relates to a low-yield single-pump two-stage reverse osmosis system. Pretreated running water is connected with a first-stage reverse osmosis membrane through a first-stage booster pump. A concentrated water outlet pipeline of the first-stage reverse osmosis membrane is sequentially and serially connected with a first-stage pressure gauge and a first-stage waste water proportional valve. The first-stage waste water proportional valve is in parallel connection with a washing electromagnetic valve and then connected with a concentrated water outlet. A pure water outlet pipeline of the first-stage reverse osmosis membrane is sequentially and serially connected with a second-stage pressure gauge and a one-way valve A and then connected with a water inlet of a second-stage reverse osmosis membrane. Waste water of the second-stage reverse osmosis membrane flows back to a water inlet of the booster pump through a second-stage proportional valve. A second-stage pure water outlet pipeline of the second-stage reverse osmosis membrane is sequentially and serially connected with a water quality monitoring instrument and a producing water quality control valve. By the low-yield single-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 20%, complex pretreating processes are not needed, salt removing rate can stably reach more than 99%, and double reduction of producing cost of ultrapure water produced by using DI (desorption ionization) (ion exchange) as post-stage purification.
Description
Technical field
The utility model relates to the miniature water purification system, refers in particular to the water purification system of a kind of≤25 ℃ of 10L/H@.
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) it is not good to produce water quality stabilizing---and 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, bring out easily 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, it is a kind of simple in structure that the utility model provides, and volume is little, the single pump type of the abortion amount double-stage reverse osmosis system that cost is low.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 can reach more than 20%; Pretreatment technology that need not be complicated, the most general 5um Filament-wound Machine filter core+granulated active carbon filter element filtering can be as system's entry; Equipment with high desalinization can be steady in a long-term more than 99%; Significantly reduce the working load of back segment deep layer purifying filtrate (such as ion exchange resin), in the prolongs life cycle, reduce at double its water producing cost.
For achieving the above object, technical solutions of the utility model are:
The single pump type of abortion amount double-stage reverse osmosis system, it is characterized in that: this system comprises first-stage reverse osmosis film and the two-pass reverse osmosis film that communicates; Pretreated tap water connects the first-stage reverse osmosis film through a topping-up pump; The dense water out pipeline of this first-stage reverse osmosis film sequentially is in series with 1 first class pressure table and 1 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 pure water outlet conduit of this first-stage reverse osmosis film is sequentially connected and is connected the water inlet of two-pass reverse osmosis film behind 1 secondary pressure table, the check valve A; The waste water of two-pass reverse osmosis film is back to the topping-up pump water inlet through 1 secondary waste water proportional valve; The secondary pure water outlet conduit of the two-pass reverse osmosis film water quality measurement instrument and of sequentially connecting is produced 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 B between secondary waste water proportional valve and the topping-up pump.
Further, be provided with a check valve C between two-pass reverse osmosis film and the water quality measurement instrument.
Further, be provided with a check valve D 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) increased by one group of membrane element, and the model specification of pump, film has been done definition and requirement;
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 and anti-backflow device (check valve);
5) do not need special former water pre-treatment means (or filtrate).
Relatively traditional double-stage reverse osmosis system---
1) only has a topping-up pump, do not have the two stage supercharging pump;
2) there be not middle water tank and the tank level control system thereof of producing;
3) the film group is minimum, the first-stage reverse osmosis film group quantity of traditional way common 1.5 or 2 times to secondary film group;
4) there is not complicated 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 single pump type of abortion amount of the present utility model double-stage reverse osmosis system, have the following advantages:
1) to prop up film single-stage reverse osmosis system suitable with the simplest list of tradition on volume, and hardware cost improves and is no more than 15%, and 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 municipal tap water condition 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) it is quick to produce water quality stabilizing, can reach standard within the several seconds the soonest, 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
The single pump type of abortion amount as shown in Figure 1 double-stage reverse osmosis system, this system comprises first-stage reverse osmosis film and the two-pass reverse osmosis film that communicates.
(flow 〉=1.8LPM, pressure 〉=1bar) sequentially pass through source pressure inductive switch (low-tension switch), entering water electromagnetic valve through the tap water after the pre-treatment (being generally 5um polypropylene fibre winded filtering core in the effect phase+granulated active carbon filter core).Again by entering one by one level reverse osmosis membrane (25 ℃ of output 125GPD, rated operating pressure 50-60psi, ratio of desalinization 〉=96%) after a topping-up pump (flow 〉=1.2LPM 7bar) supercharging.
One first class pressure table is installed on the dense water out pipeline of first-stage reverse osmosis film, then it is (adjustable or fixing to be connected to an one-level waste water proportional valve, kv=0.6LPM), behind this one-level waste water proportional valve scouring electromagnetic valve in parallel, final dense water is discharged through the concentrated water discharge mouth, and this scouring electromagnetic valve is used for the flushing maintenance of start by set date reverse osmosis membrane.
The one-level pure water outlet conduit of first-stage reverse osmosis film connects a secondary pressure table, then is connected to the water inlet of two-pass reverse osmosis film (25 ℃ of output 75GPD@, rated operating pressure 50-60psi, ratio of desalinization 〉=96%) via a check valve A.
The waste water of two-pass reverse osmosis film sequentially through a secondary waste water proportional valve (fixed, kv=0.2LPM), a check valve B is back to the topping-up pump water inlet and recycles.
Sequentially connect a check valve C, water quality measurement instrument (conductivitimeter) of the secondary pure water outlet conduit of two-pass reverse osmosis film 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 single pump type of the utility model abortion amount double-stage reverse osmosis system is to select the pump, the membrane element that mate, set as requested simultaneously the operating pressure of I and II reverse osmosis membrane, usually the operating pressure of first-stage reverse osmosis film is set to 7.5-8bar, and the operating pressure of two-pass reverse osmosis film is set as 3.5-4bar.As select fixed waste water proportional valve, select suitable model to get final product according to above-mentioned KV value condition so.The flushing maintenance shop of system recommendations moves unlatching in 3-4 hour once every being at least energising 12 hours/time or every accumulative total.
Claims (5)
1. the single pump type of abortion amount double-stage reverse osmosis system, it is characterized in that: this system comprises first-stage reverse osmosis film and the two-pass reverse osmosis film that communicates; Pretreated tap water connects the first-stage reverse osmosis film through a topping-up pump; The dense water out pipeline of this first-stage reverse osmosis film sequentially is in series with 1 first class pressure table and 1 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 pure water outlet conduit of this first-stage reverse osmosis film is sequentially connected and is connected the water inlet of two-pass reverse osmosis film behind 1 secondary pressure table, the check valve A; The waste water of two-pass reverse osmosis film is back to the topping-up pump water inlet through 1 secondary waste water proportional valve; The secondary pure water outlet conduit of the two-pass reverse osmosis film water quality measurement instrument and of sequentially connecting is produced 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. the single pump type of abortion amount as claimed in claim 1 double-stage reverse osmosis system is characterized in that: be provided with a check valve B between secondary waste water proportional valve and the topping-up pump.
3. the single pump type of abortion amount as claimed in claim 1 or 2 double-stage reverse osmosis system is characterized in that: be provided with a check valve C between two-pass reverse osmosis film and the water quality measurement instrument.
4. the single pump type of abortion amount as claimed in claim 1 or 2 double-stage reverse osmosis system is characterized in that: produce between water quality control valve and the concentrated water discharge mouth and be provided with a check valve D.
5. the single pump type of abortion amount as claimed in claim 3 double-stage reverse osmosis system is characterized in that: produce between water quality control valve and the concentrated water discharge mouth and be provided with a check valve D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220425436.1U CN202729915U (en) | 2012-08-24 | 2012-08-24 | Low-yield single-pump two-stage reverse osmosis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220425436.1U CN202729915U (en) | 2012-08-24 | 2012-08-24 | Low-yield single-pump two-stage reverse osmosis system |
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| CN202729915U true CN202729915U (en) | 2013-02-13 |
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| CN201220425436.1U Expired - Lifetime CN202729915U (en) | 2012-08-24 | 2012-08-24 | Low-yield single-pump two-stage reverse osmosis system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553233A (en) * | 2013-11-20 | 2014-02-05 | 陈忠林 | Bucket-free water-saving water purifier |
| CN103626311A (en) * | 2012-08-24 | 2014-03-12 | 岳勇斌 | Low-yield single-pump two-stage reverse osmosis system |
| WO2015188776A1 (en) * | 2014-06-06 | 2015-12-17 | 王桂林 | Multi-stage reverse osmosis membrane device applied to sea water desalination |
| CN106428504A (en) * | 2016-10-31 | 2017-02-22 | 河北科技大学 | Small reverse osmosis seawater desalting device |
| CN108689516A (en) * | 2018-08-16 | 2018-10-23 | 杭州老板电器股份有限公司 | Purifier and water purifier |
-
2012
- 2012-08-24 CN CN201220425436.1U patent/CN202729915U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626311A (en) * | 2012-08-24 | 2014-03-12 | 岳勇斌 | Low-yield single-pump two-stage reverse osmosis system |
| CN103553233A (en) * | 2013-11-20 | 2014-02-05 | 陈忠林 | Bucket-free water-saving water purifier |
| WO2015188776A1 (en) * | 2014-06-06 | 2015-12-17 | 王桂林 | Multi-stage reverse osmosis membrane device applied to sea water desalination |
| CN106428504A (en) * | 2016-10-31 | 2017-02-22 | 河北科技大学 | Small reverse osmosis seawater desalting device |
| CN108689516A (en) * | 2018-08-16 | 2018-10-23 | 杭州老板电器股份有限公司 | Purifier and water purifier |
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| 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: 20160906 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 |