CN202007173U - Reverse-osmosis concentrated water treatment system - Google Patents
Reverse-osmosis concentrated water treatment system Download PDFInfo
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- CN202007173U CN202007173U CN2011200971873U CN201120097187U CN202007173U CN 202007173 U CN202007173 U CN 202007173U CN 2011200971873 U CN2011200971873 U CN 2011200971873U CN 201120097187 U CN201120097187 U CN 201120097187U CN 202007173 U CN202007173 U CN 202007173U
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- osmosis concentrated
- water
- reverse osmosis
- concentrated water
- electrodeionization
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Abstract
The utility model discloses a reverse-osmosis concentrated water treatment system. The reverse-osmosis concentrated water treatment system comprises a membrane distillation subsystem and an electrodeionization subsystem, wherein the membrane distillation subsystem particularly comprises a heating system which is used for heating reverse-osmosis concentrated water, a membrane distillation assembly which is connected with the heating system and is used for performing membrane distillation on the heated reverse-osmosis concentrated water to obtain water steam, a gas-liquid separator which is connected with the membrane distillation assembly and is used for separating water drops from the water steam, and a heat exchanger which is connected with the gas-liquid separator and is used for condensing the water steam to obtain primarily-purified water; and the electrodeionization subsystem comprises an electrodeionization membrane stack which is connected with the heat exchanger and is used for performing electrodeionization on the primarily-purified water to obtain highly-purified water. The reverse-osmosis concentrated water treatment system can treat the reverse-osmosis concentrated water fundamentally and improve the reverse-osmosis concentrated water treatment efficiency.
Description
Technical field
The utility model embodiment relates to technology for treating industrial waste water, relates in particular to a kind of reverse osmosis concentrated water treatment system.
Background technology
The water resources critical shortage has become the important factor of restriction China water-deficient area Economic development, and how to economize on water and open up new " water source ", reduce water withdrawal, be a problem that must face in the Sustainable development process.
Reverse osmosis (Reverse Osmosis, be called for short RO) be nearly two membrane separation techniques that grow up during the last ten years, can remove most of solubility salt and partial organic substances in the former water, former water is divided into two portions: primary pure water and reverse osmosis concentrated water after handling through reverse osmosis technology.Adopt reverse osmosis technology to handle former water, the recovery utilization rate of former water, generally the highest can only reaching about 70% still has the reverse osmosis concentrated water discharging about 30%.Present most of enterprise all with a large amount of reverse osmosis concentrated water dischargings or as the flushing ground of low side, the water etc. of watering flowers, causes the serious wasting of resources.
In the existing reverse osmosis concentrated water technology, the patent No. is ZL200820168798.0, ZL200920105399.4, and application number is that 200810224666.X, 201010192131.6 file have all disclosed some reverse osmosis concentrated water treatment systems, handle earlier as prime as dosing scale inhibition, ozone or other oxygenant oxidation degradeds etc., use reverse osmosis technology advanced treatment reverse osmosis concentrated water at last.
There is following problem in prior art: all adopt traditional water technology, handle reverse osmosis concentrated water with reverse osmosis technology, processing efficiency is low, does not fundamentally solve the difficult problem of reverse osmosis concentrated water treatment.
The utility model content
The utility model embodiment provides a kind of reverse osmosis concentrated water treatment system, in order to fundamentally to handle reverse osmosis concentrated water, improves the processing efficiency of reverse osmosis concentrated water.
The utility model embodiment provides a kind of reverse osmosis concentrated water treatment system, wherein, comprising:
The membrane distillation subsystem, it comprises
Heating system is used for reverse osmosis concentrated water is carried out heat treated;
The membrane distillation assembly links to each other with described heating system, is used for the reverse osmosis concentrated water after the heating is carried out the membrane distillation treatment process, obtains water vapor;
Vapour liquid separator links to each other with described membrane distillation assembly, is used for the adulterated water droplet of described water vapor is separated;
Interchanger links to each other with described vapour liquid separator, is used for the described water vapour of condensation, obtains primary pure water;
The electrodeionization subsystem, it comprises
The electrodeionization membrane stack is used for described primary pure water is carried out the electrodeionization treatment process, obtains high purity water.
Aforesaid reverse osmosis concentrated water treatment system, preferably, described heating system comprises:
The heating cycle case is connected with interchanger, is used for carrying out heat treated with carrying out pre-warmed reverse osmosis concentrated water by described interchanger;
The membrane distillation recycle pump is connected between described heating cycle case and the membrane distillation assembly, is used for the described reverse osmosis concentrated water after the heat treated is pumped into the membrane distillation assembly.
Aforesaid reverse osmosis concentrated water treatment system, preferably:
Described interchanger comprises and adds heat passage, hot working fluid path and condensation pass;
Described hot working fluid path is communicated with the hot working fluid source, is used to feed hot working fluid;
The described heat passage that adds is connected with described heating cycle case, is used for the described reverse osmosis concentrated water that feeds is carried out preheating;
Described condensation pass links to each other with described vapour liquid separator, is used for the water vapor that feeds is carried out condensation.
Aforesaid reverse osmosis concentrated water treatment system, preferably, described electrodeionization subsystem also comprises:
Direct supply is connected with described electrodeionization membrane stack, is used for to described electrodeionization membrane stack power supply.
The reverse osmosis concentrated water treatment system that the utility model embodiment provides, owing to adopt the integrated system of membrane distillation subsystem and electrodeionization subsystem, with traditional reverse osmosis concentrated water treatment system the different of essence are arranged, can fundamentally solve a difficult problem of handling reverse osmosis concentrated water, with the reverse osmosis concentrated water advanced treatment and reclamation, improved reverse osmosis concentrated water treatment efficiency, and have the following advantages: at first, the service temperature of membrane distillation treatment process is low, need not solution is heated to boiling, secondly, evaporation area is big; And working pressure is low, and ratio of desalinization height, film pollute few, the effluent quality height, and be subjected to the influence of raw water quality hardly; Once more, membrane distillation process operations parameter is moderate, does not need high-pressure machinery and pressure-resistance structure, and has good water flux; At last, the desalination continuously of electrodeionization treatment process, and can advanced desalination, the pure water water quality that obtains through the electrodeionization treatment process is good, the processing efficiency height.
Description of drawings
The synoptic diagram of the reverse osmosis concentrated water treatment system that Fig. 1 provides for the utility model embodiment one.
The synoptic diagram of the reverse osmosis concentrated water treatment system that Fig. 2 provides for the utility model embodiment two.
The schema one of the reverse osmosis concentrated water treatment system working method that Fig. 3 provides for the utility model embodiment.
The flowchart 2 of the reverse osmosis concentrated water treatment system working method that Fig. 4 provides for the utility model embodiment.
Reference numeral:
1-membrane distillation subsystem; 2-electrodeionization subsystem;
The 11-heating system; 12-membrane distillation assembly;
The 13-vapour liquid separator; The 14-interchanger;
The 15-membrane distillation produces water tank; 21-electrodeionization membrane stack;
The 22-direct supply; The 23-electrodeionization produces water tank;
111-heating cycle case; 112-membrane distillation recycle pump.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one
The synoptic diagram of the reverse osmosis concentrated water treatment system that Fig. 1 provides for the utility model embodiment one describes the utility model embodiment one in detail below in conjunction with Fig. 1.The utility model embodiment one provides a kind of reverse osmosis concentrated water treatment system, and it comprises membrane distillation subsystem 1 and electrodeionization subsystem 2; Membrane distillation subsystem 1 specifically comprises heating system 11, is used for reverse osmosis concentrated water is carried out heat treated; Membrane distillation assembly 12 links to each other with heating system 11, is used for the reverse osmosis concentrated water after the heating is carried out the membrane distillation treatment process, obtains water vapor; Vapour liquid separator 13 links to each other with membrane distillation assembly 12, is used for the adulterated water droplet of water vapor is separated; Interchanger 14 links to each other with vapour liquid separator 13, is used for condensed steam, obtains primary pure water; Electrodeionization subsystem 2 specifically comprises electrodeionization membrane stack 21, is used for primary pure water is carried out the electrodeionization treatment process, obtains high purity water.
The utility model embodiment one adopts membrane distillation subsystem and two kinds of systems of electrodeionization subsystem in addition integrated, can fundamentally solve the inefficient problem of reverse osmosis concentrated water of handling, and the pure water that obtains after handling can directly use as high purity water, break present Industrial Wastewater Treatment and only satisfied the routine that low side uses, improved the processing efficiency of reverse osmosis concentrated water.
Embodiment two
The utility model embodiment two is on the technical scheme basis of embodiment one, and preferably, the membrane distillation subsystem also comprises: membrane distillation produces water tank 15, is connected between interchanger 14 and the electrodeionization membrane stack 21, is used for the storage primary pure water.As shown in Figure 2.
The processing efficiency of membrane distillation processing subsystem and electrodeionization processing subsystem is not necessarily synchronous, increasing membrane distillation product water tank and can effectively store the primary pure water that the membrane distillation treatment process obtains on the one hand between two subsystems, also is in order to coordinate the processing efficiency of two subsystems on the other hand.
The preferred implementation of heating system 11 is: comprising: heating cycle case 111, be connected with interchanger 14, and be used for carrying out heat treated with carrying out pre-warmed reverse osmosis concentrated water by interchanger 14; Membrane distillation recycle pump 112 is connected between heating cycle case 111 and the membrane distillation assembly 12, is used for the reverse osmosis concentrated water after the heat treated is pumped into membrane distillation assembly 12.
Interchanger 14 comprises and adds heat passage, hot working fluid path and condensation pass; The hot working fluid path is communicated with the hot working fluid source, is used to feed hot working fluid; Add heat passage and be connected, be used for the reverse osmosis concentrated water that feeds is carried out preheating with heating cycle case 111; Condensation pass links to each other with vapour liquid separator 13, is used for the water vapor that feeds is carried out condensation.
In the practical application, optionally, electrodeionization subsystem 1 also comprises: electrodeionization produces water tank 23, connects after the electrodeionization membrane stack 21, is used to store high purity water.
On the technique scheme basis, preferably, electrodeionization subsystem 2 also comprises: direct supply 22, be connected with electrodeionization membrane stack 21, and be used for to 21 power supplies of electrodeionization membrane stack.As shown in Figure 4.
The reverse osmosis concentrated water treatment system that the utility model embodiment two provides, adopt membrane distillation subsystem and electrodeionization subsystem to constitute whole reverse osmosis concentrated water treatment system, can fundamentally solve the handling problem of reverse osmosis concentrated water, treatment system advanced person, the efficient height, and can realize circular treatment to reverse osmosis concentrated water.
The schema one of the reverse osmosis concentrated water treatment system working method that Fig. 3 provides for the utility model embodiment, the reverse osmosis concentrated water treatment system that this method can adopt the utility model any embodiment to provide, its method may further comprise the steps:
Steps A 01, reverse osmosis concentrated water is heated;
Steps A 02, the reverse osmosis concentrated water after will heating feed the membrane distillation assembly to carry out the membrane distillation treatment process, obtain water vapor;
Steps A 03, water vapor is fed vapour liquid separator, so that adulterated water droplet in the water vapor is separated;
Steps A 04, water vapor is fed interchanger, to be condensed into primary pure water;
Steps A 05, primary pure water is fed the electrodeionization membrane stack carry out the electrodeionization treatment process, obtain high purity water.
The flowchart 2 of the reverse osmosis concentrated water treatment system working method that Fig. 4 provides for the utility model embodiment, the preferred implementation that reverse osmosis concentrated water is carried out heat treated is shown in following steps:
Step 101, reverse osmosis concentrated water is fed interchanger carry out preheating, this interchanger can be same interchanger with the employed interchanger of condensation, and interchanger generally has the multi-path structure;
Step 102, the reverse osmosis concentrated water after the preheating is fed the heating cycle case heat;
Step 103, after the temperature that monitors reverse osmosis concentrated water is increased to set(ting)value, adopt the membrane distillation recycle pump with reverse osmosis concentrated water to the membrane distillation component transfer.
Reverse osmosis concentrated water generally produces in industrial production, there are a large amount of industrial waste heats in the industrial production, is that a kind of effective used heat utilizes mode with industrial waste heat as the supply energy source of interchanger, reverse osmosis concentrated water is carried out preheating earlier, carry out heat treated subsequently again, can reduce the energy consumption of heating cycle case, save energy.In the practical application, the water vapour that obtains by the membrane distillation treatment process is mixed with little water droplet unavoidably, need handle to remove wherein adulterated little water droplet water vapour, water vapour can be obtained the liquid that little water droplet is condensed into by after the vapour liquid separator, after adulterated water droplet is separated in water vapor, can also comprise steps A 06, the liquid that water droplet is condensed into is back to the heating cycle case and heats, as shown in Figure 4.
Primary pure water is fed preferred implementation that the electrodeionization membrane stack carries out the electrodeionization treatment process shown in step 105, adopt the electrodeionization topping-up pump that primary pure water is delivered to the electrodeionization membrane stack and carry out the electrodeionization treatment process.In actual the use, do not use the electrodeionization topping-up pump also can finish the conveying of primary pure water to the electrodeionization membrane stack, but after using the electrodeionization topping-up pump, carry more stablely, transport efficiency also can improve.
The high purity water that electrodeionization obtains after handling often can not be used immediately, need to adopt water storage device that pure water is stored, so, primary pure water is being fed after the electrodeionization membrane stack carries out the electrodeionization treatment process, also comprising steps A 07: high purity water is being delivered to electrodeionization produces water tank and store.
Optionally, water vapor is being fed interchanger,, also comprising step 104: primary pure water is being delivered to membrane distillation produces water tank and store to be condensed into after the primary pure water.
The dense water that produces after the electrodeionization treatment process, can handle once more, so, carry out the electrodeionization treatment process primary pure water being fed the electrodeionization membrane stack, obtain after the high purity water, also comprise steps A 08: will carry out the dense water that the electrodeionization treatment process obtains and re-execute reverse osmosis concentrated water treatment method as reverse osmosis concentrated water.
In the practical application, preferably: the service temperature of carrying out the membrane distillation treatment process is 50 ℃～95 ℃, and vacuum tightness is 0.05MPa～0.09MPa, feed liquid linear velocity 10cm/min～50cm/min; Actuating current 0.1A～the 3A of electrodeionization membrane stack, waterline speed 2cm/s～8cm/s.Under this operational condition, the specific conductivity of the primary pure water that obtains via the membrane distillation treatment process is about 6.0 μ S/cm, total organic carbon (TOC) content is about 600 μ g/L, the high-purity resistivity of water that obtains through the electrodeionization treatment process reaches more than the 15.5M Ω cm, TOC content is about 100 μ g/L, the ER for emission rate of utmost point water is about 1%, promptly, the pure water that the reverse osmosis concentrated water treatment system of using the utility model embodiment to provide obtains can reach the degree of high purity water, and the processing efficiency height, the ER for emission rate of utmost point water is low.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (4)
1. a reverse osmosis concentrated water treatment system is characterized in that, comprising:
The membrane distillation subsystem, it comprises:
Heating system is used for reverse osmosis concentrated water is carried out heat treated;
The membrane distillation assembly links to each other with described heating system, is used for the reverse osmosis concentrated water after the heating is carried out the membrane distillation treatment process, obtains water vapor;
Vapour liquid separator links to each other with described membrane distillation assembly, is used for the adulterated water droplet of described water vapor is separated;
Interchanger links to each other with described vapour liquid separator, is used for the described water vapour of condensation, obtains primary pure water;
The electrodeionization subsystem, it comprises:
The electrodeionization membrane stack links to each other with described interchanger, is used for described primary pure water is carried out the electrodeionization treatment process, obtains high purity water.
2. reverse osmosis concentrated water treatment system according to claim 1 is characterized in that, described heating system comprises:
The heating cycle case is connected with interchanger, is used for carrying out heat treated with carrying out pre-warmed reverse osmosis concentrated water by described interchanger;
The membrane distillation recycle pump is connected between described heating cycle case and the membrane distillation assembly, is used for the described reverse osmosis concentrated water after the heat treated is pumped into the membrane distillation assembly.
3. reverse osmosis concentrated water treatment system according to claim 1 is characterized in that:
Described interchanger comprises and adds heat passage, hot working fluid path and condensation pass;
Described hot working fluid path is communicated with the hot working fluid source, is used to feed hot working fluid;
The described heat passage that adds is connected with described heating cycle case, is used for the described reverse osmosis concentrated water that feeds is carried out preheating;
Described condensation pass links to each other with described vapour liquid separator, is used for the water vapor that feeds is carried out condensation.
4. reverse osmosis concentrated water treatment system according to claim 1 is characterized in that, described electrodeionization subsystem also comprises:
Direct supply is connected with described electrodeionization membrane stack, is used for to described electrodeionization membrane stack power supply.
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| CN2011200971873U CN202007173U (en) | 2011-04-02 | 2011-04-02 | Reverse-osmosis concentrated water treatment system |
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| CN2011200971873U CN202007173U (en) | 2011-04-02 | 2011-04-02 | Reverse-osmosis concentrated water treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139984A (en) * | 2011-04-02 | 2011-08-03 | 中国人民解放军军事医学科学院卫生装备研究所 | Reverse osmosis thick water treatment method and reverse osmosis thick water treatment system |
| CN105084445A (en) * | 2015-08-13 | 2015-11-25 | 大唐环境产业集团股份有限公司 | Efficient membrane distillation method and device |
-
2011
- 2011-04-02 CN CN2011200971873U patent/CN202007173U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139984A (en) * | 2011-04-02 | 2011-08-03 | 中国人民解放军军事医学科学院卫生装备研究所 | Reverse osmosis thick water treatment method and reverse osmosis thick water treatment system |
| CN105084445A (en) * | 2015-08-13 | 2015-11-25 | 大唐环境产业集团股份有限公司 | Efficient membrane distillation method and device |
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Granted publication date: 20111012 Termination date: 20140402 |