CN103508515A - Two-stage reverse osmosis purified water production process with single-stage reverse osmosis system formed through partial conversion - Google Patents
Two-stage reverse osmosis purified water production process with single-stage reverse osmosis system formed through partial conversion Download PDFInfo
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- CN103508515A CN103508515A CN201210211548.1A CN201210211548A CN103508515A CN 103508515 A CN103508515 A CN 103508515A CN 201210211548 A CN201210211548 A CN 201210211548A CN 103508515 A CN103508515 A CN 103508515A
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Abstract
The invention relates to a two-stage reverse osmosis purified water production process with a single-stage reverse osmosis system formed through partial conversion. According to the present invention, a set of a two-stage reverse osmosis system is adopted, and a valve is adjusted according to the requirement amount of water for reverse osmosis to reduce water supplied for a second-stage reverse osmosis apparatus, such that the partial first-stage reverse osmosis apparatus becomes a set of a new single-stage reverse osmosis system so as to reduce the total equipment cost, operation cost and occupation area, and provide characteristics of simple operation and easy running.
Description
Technical field
The present invention relates to a kind of double-stage reverse osmosis pure-water producing process of part single-stage, particularly a kind ofly convert part first-stage reverse osmosis device in part two-stage reverse osmosis system to a set of first-stage reverse osmosis system and obtain the pure-water producing process of another set of independently two-stage reverse osmosis system.
Background technology
The pure water of different purity is all widely used in industry such as electronics, pharmacy, food, the energy.The traditional preparation method of reverse osmose pure-water has single-stage reverse osmosis method and double-stage reverse osmosis method.Single-stage instead thoroughly the method for oozing be that Jiang Yuanshui sees through under pressure reverse osmosis membrane and is purified, desalination rate is generally 97%～99%.For further improving desalination rate, adopt first-stage reverse osmosis equipment desalination, the further desalination of former water using its pure water as another reverse osmosis unit again, this technique that two reverse osmosis units are combined to use is called double-stage reverse osmosis technique, two reverse osmosis units are called firsts and seconds reverse osmosis unit, and first-stage reverse osmosis device and second level reverse osmosis apparatus are collectively referred to as two-stage reverse osmosis system.First-stage reverse osmosis pure water and two-pass reverse osmosis pure water purity have obvious difference, and range of application is different, and two-pass reverse osmosis pure water purity is higher than first-stage reverse osmosis pure water purity.
Former water enters from reverse osmosis unit water-in, and a part of water sees through reverse osmosis membrane becomes pure water, and the water that another part does not see through reverse osmosis membrane becomes dense water because of the water that saltiness raises.It can only be pure water by the sub-fraction water filtration of former water that common reverse osmosis membrane list props up.Single membrane element is arranged and just formed unistage type system by certain way, in single hop system, comprise plural membrane element, the arrangement same meaning of the arrangement of single hop system and unit piece system.For obtaining more pure water, can adopt multistratum system.Water inlet using the dense water of first paragraph as second segment, the dense water of second segment is as the water inlet of the 3rd section, by that analogy, until reach the requirement of the rate of recovery.Such method is called multi-stage series method.The water inlet part of every section becomes product water, and the flooding velocity of latter a section can reduce, and saltiness can raise, so the membrane element quantity of back segment is fewer than the membrane element quantity of the preceding paragraph, the pure water purity of every reverse osmosis membrane generation is also declining piecemeal.Conventionally, two sections of systems can accomplish 50%～75% the rate of recovery, and three sections of system recoveries rates accomplish 75%～90%.The pure water saltiness that last reverse osmosis membrane produces may be the more than 3 times of pure water saltiness that first reverse osmosis membrane produces.General single-stage reverse osmosis method becomes first-stage reverse osmosis pure water after the pure water of all reverse osmosis membranes is merged.The fresh water of proceeding another grade of membrane sepn with the product water of single-stage reverse osmosis unit is called two-pass reverse osmosis pure water.
In some cases, more to two-pass reverse osmosis pure water demand in industrial production, to the less or step demand of first-stage reverse osmosis pure water demand.By traditional configuration, production unit need to be equipped with the reverse osmosis produced water system of two covers, be respectively first-stage reverse osmosis water production system and two-pass reverse osmosis water production system, meet the demand to first-stage reverse osmosis pure water and two-pass reverse osmosis pure water in producing, production unit need be after building a set of two-stage reverse osmosis system like this, more a set of first-stage reverse osmosis system is separately built in additional investment.The problem existing is that newly-built a set of first-stage reverse osmosis equipment cost increases, and to first-stage reverse osmosis water consumption, is intermittent mode in producing, so the vacancy rate of first-stage reverse osmosis system is higher.Total appraisal is that cost performance is low.Also increased the running cost of water treatment vehicle Jian space and reverse osmosis simultaneously.
Summary of the invention
The double-stage reverse osmosis pure-water producing process that the object of this invention is to provide a kind of part single-stage, this technological operation is simple, operation is convenient, at equipment total cost and double-stage reverse osmosis, invest equate in the situation that, utilize the first-stage reverse osmosis device of two-stage partially reverse osmose system to be converted to a set of first-stage reverse osmosis system temporarily, just can meet the demand of first-stage reverse osmosis pure water water quality and the water yield, two-pass reverse osmosis water quality and the water yield simultaneously.So only need to build a set of two-stage reverse osmosis system.Both save investment and produced this, also improved the utilization ratio of two-stage reverse osmosis system.
For achieving the above object, the present invention takes following design: a kind of double-stage reverse osmosis pure-water producing process of part single-stage, it is to utilize a set of two-stage reverse osmosis system, this system is divided two-stage, every grade is multi-segment structure, the synthetic first-stage reverse osmosis pure water of pure water that each section of reverse osmosis membrane of this system one stage arrangement produces, first-stage reverse osmosis pure water is done former water and is entered next stage reverse osmosis unit, and producing water is two-pass reverse osmosis pure water.When turning in secondary reverse osmosis systems first-stage reverse osmosis device down with regulated valve to the water-supply quantity of second level reverse osmosis apparatus, the water yield reducing is discharged by first-stage reverse osmosis DI, can be used as a set of first-stage reverse osmosis system and meets the demand of producing first-stage reverse osmosis pure water.
In foregoing reverse osmosis unit, the first-stage reverse osmosis device of part two-stage reverse osmosis system is converted to a set of first-stage reverse osmosis system temporarily, and the hop count of conversion and quantity are looked reverse osmose pure-water water demand amounts at different levels and determined.
A whole set of two-stage reverse osmosis system converts part first-stage reverse osmosis device after first-stage reverse osmosis system to, and former secondary reverse osmosis systems continues to production supply two-pass reverse osmosis pure water, but the water yield reduces relatively.The first-stage reverse osmosis system that in former two-stage reverse osmosis system, first-stage reverse osmosis device converts is to production supply first-stage reverse osmosis pure water.Two portions water yield is adjustable according to the actual requirements.When whole system does not need first-stage reverse osmosis pure water, close and lead to the product water valve that first-stage reverse osmosis produces water tank, the first-stage reverse osmosis device in two-stage reverse osmosis system and the motor-driven control valve between second level reverse osmosis apparatus, whole system is produced water as two-stage reverse osmosis system.
Advantage of the present invention: the present invention is divided into first-stage reverse osmosis device and second level reverse osmosis apparatus by a set of two-stage reverse osmosis system, wherein part first-stage reverse osmosis device can intermittently be converted to another set of first-stage reverse osmosis system.Production is larger to two-pass reverse osmosis pure water water demand amount, less to first-stage reverse osmosis demand, a small amount of first-stage reverse osmosis pure water is separately joined a set of first-stage reverse osmosis system if, so not only on cost, wants additional investment, also increases the floor space of operator's workload and equipment simultaneously.And the present invention is making full use of the former aquatic product two-pass reverse osmosis pure water of original two-stage reverse osmosis system purification, while meeting the water demand of subordinate's reverse osmose pure-water.When system needs first-stage reverse osmosis water requirements, utilize part first-stage reverse osmosis device in two-stage reverse osmosis system to convert another set of first-stage reverse osmosis system to, the first-stage reverse osmosis system after conversion meets the interim demand to first-stage reverse osmosis pure water of producing.Utilize this method can avoid the additional investment of first-stage reverse osmosis system, thereby reduce equipment total cost, running cost, floor space, also reduced pure water cost thereupon, and simple to operate, operation convenience.
Accompanying drawing explanation
In figure: (1) first-stage reverse osmosis high-pressure pump; (2) one section of film device of one-level; (3) one section of film device of one-level; (4) one-level two-segment film device; (5) one section of film device of one-level; (6) one section of film device of one-level; (7) one-level two-segment film device; (8) one section of film device of secondary; (9) one section of film device of secondary; (10) two-stage two-segment film device; (11) motor-driven control valve; (12) add alkali pneumavalve; (13) pneumavalve; (14) floor drain interface; (15) floor drain interface; (16) first-stage reverse osmosis pure water tank; (17) two-pass reverse osmosis pure water tank; (18) two-pass reverse osmosis high-pressure pump;
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Double-stage reverse osmosis supplies water.Motor-driven control valve (11), add alkali pneumavalve (12) in full-gear, pneumavalve (13) is in complete shut-down state, former water is sent into one section of film device of (2) one-level under the effect of first-stage reverse osmosis high-pressure pump (1), (3) one section of film device of one-level, (5) one section of film device of one-level, (6) one section of film device of one-level, fresh water imports level two one stage arrangement DI, dense water enters (4) one-level two-segment film device, (7) one-level two-segment film device, proceed membrane sepn, the fresh water that sees through reverse osmosis membrane imports level two one stage arrangement DI, what do not see through enters floor drain interface (14) for concentrated water drainage.The first-stage reverse osmosis device pure water of level two is under the effect of two-pass reverse osmosis high-pressure pump, enter one section of film device of (8) secondary, one section of film device of (9) secondary, fresh water imports level two secondary device DI, dense water enters (10) two-stage two-segment film device, proceed membrane sepn, the fresh water that sees through reverse osmosis membrane imports level two secondary device DI, and what do not see through enters floor drain interface (16) for concentrated water drainage.Last secondary device DI access (17) two-pass reverse osmosis pure water tank.Obtain system pure water.
Supplying water in different qualities.Pneumavalve (13), add alkali pneumavalve (12) in full-gear, motor-driven control valve (11) aperture is adjustable according to first-stage reverse osmosis water consumption.Former water is sent into one section of film device of (2) one-level, one section of film device of (3) one-level, one section of film device of (5) one-level, one section of film device of (6) one-level under the effect of first-stage reverse osmosis high-pressure pump (1), fresh water imports level two one stage arrangement DI, dense water enters (4) one-level two-segment film device, (7) one-level two-segment film device, proceed membrane sepn, the fresh water that sees through reverse osmosis membrane imports level two one stage arrangement DI, and what do not see through enters floor drain interface (14) for concentrated water drainage.A first-stage reverse osmosis device pure water part for level two is under the effect of two-pass reverse osmosis high-pressure pump, enter one section of film device of (8) secondary, one section of film device of (9) secondary, fresh water imports level two secondary device DI, dense water enters (10) two-stage two-segment film device, proceed membrane sepn, the fresh water that sees through reverse osmosis membrane imports level two secondary device DI, what do not see through enters floor drain interface (16) for concentrated water drainage, last secondary device DI access (17) two-pass reverse osmosis pure water tank, obtains level two pure water.Another part directly enters first-stage reverse osmosis pure water tank by the pipeline of pneumavalve (13), obtains a level system pure water.
Claims (3)
1. the double-stage reverse osmosis pure-water producing process of a part single-stage, it is characterized in that it is to utilize a set of two-stage reverse osmosis system, it is another set of first-stage reverse osmosis system that this system is utilized the first-stage reverse osmosis device fractional conversion of two-stage reverse osmosis system, former two-stage reverse osmosis system continue to purify and two-pass reverse osmosis pure water, conversion and first-stage reverse osmosis system purification produce first-stage reverse osmosis pure water.
2. the double-stage reverse osmosis pure-water producing process of part single-stage according to claim 1, it is characterized in that described two-stage reverse osmosis system first-stage reverse osmosis device fractional conversion becomes another set of first-stage reverse osmosis system, realizes the water demand of first-stage reverse osmosis pure water and two-pass reverse osmosis pure water simultaneously.
3. the double-stage reverse osmosis pure-water producing process of part single-stage according to claim 1, it is characterized in that described two-stage reverse osmosis system part first-stage reverse osmosis device converts to after another set of first-stage reverse osmosis system, when system does not have demand to first-stage reverse osmosis pure water water, conversion and first-stage reverse osmosis system can again be converted to the first-stage reverse osmosis device of two system reverse osmosis system.
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| CN201210211548.1A CN103508515A (en) | 2012-06-26 | 2012-06-26 | Two-stage reverse osmosis purified water production process with single-stage reverse osmosis system formed through partial conversion |
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Citations (7)
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| JPS562883A (en) * | 1979-06-23 | 1981-01-13 | Shinko Fuaudoraa Kk | Treatment of exhaust regeneration liquid of ion exchange apparatus for purifying electrodeposition paint liquid |
| WO2002068338A2 (en) * | 2001-02-26 | 2002-09-06 | I.D.E. Technologies Ltd. | Method of boron removal in presence of magnesium ions |
| CN1417134A (en) * | 2001-11-05 | 2003-05-14 | 孟广祯 | Two-stage partially reverse osmose pure-water producing process |
| US6946081B2 (en) * | 2001-12-31 | 2005-09-20 | Poseidon Resources Corporation | Desalination system |
| CN2782665Y (en) * | 2005-03-03 | 2006-05-24 | 浙江四通环境工程有限公司 | Two-stage reverse osmosis water purifier for prenltrafilter |
| CN202046945U (en) * | 2011-03-02 | 2011-11-23 | 广东汇众环境科技股份有限公司 | Single-stage and two-stage reverse osmosis exchanging system |
| CN202272781U (en) * | 2011-09-07 | 2012-06-13 | 温州海德能环保设备科技有限公司 | Two-stage reverse osmosis water purification equipment |
-
2012
- 2012-06-26 CN CN201210211548.1A patent/CN103508515A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562883A (en) * | 1979-06-23 | 1981-01-13 | Shinko Fuaudoraa Kk | Treatment of exhaust regeneration liquid of ion exchange apparatus for purifying electrodeposition paint liquid |
| WO2002068338A2 (en) * | 2001-02-26 | 2002-09-06 | I.D.E. Technologies Ltd. | Method of boron removal in presence of magnesium ions |
| CN1417134A (en) * | 2001-11-05 | 2003-05-14 | 孟广祯 | Two-stage partially reverse osmose pure-water producing process |
| US6946081B2 (en) * | 2001-12-31 | 2005-09-20 | Poseidon Resources Corporation | Desalination system |
| CN2782665Y (en) * | 2005-03-03 | 2006-05-24 | 浙江四通环境工程有限公司 | Two-stage reverse osmosis water purifier for prenltrafilter |
| CN202046945U (en) * | 2011-03-02 | 2011-11-23 | 广东汇众环境科技股份有限公司 | Single-stage and two-stage reverse osmosis exchanging system |
| CN202272781U (en) * | 2011-09-07 | 2012-06-13 | 温州海德能环保设备科技有限公司 | Two-stage reverse osmosis water purification equipment |
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Application publication date: 20140115 |