CN101816895B

CN101816895B - Reverse osmosis membrane tube system

Info

Publication number: CN101816895B
Application number: CN 201010167706
Authority: CN
Inventors: 葛明明
Original assignee: PURIFICATION EQUIPMENT (SUZHOU) CO Ltd
Current assignee: SUZHOU PURIFICATION EQUIPMENT CO., LTD.
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2013-09-04
Anticipated expiration: 2030-05-10
Also published as: CN101816895A

Abstract

The invention relates to a reverse osmosis membrane tube system, which comprises a plurality of branched membrane tubes. Each branched membrane tube comprises a membrane shell and a plurality of reverse osmosis membrane pieces filled in the membrane shell; and the each branched membrane tube also comprises a raw water inlet, a fresh water outlet and a concentrated water outlet. The reverse osmosis membrane tube system is characterized in that raw water flows in from the raw water inlet of one of the plurality of branched membrane tubes, and the concentrated water outlets of the plurality of branched membrane tubes are sequentially communicated in series. A hot water reverse osmosis membrane adopted in the system can tolerate hot water; because the hot water of between 70 and 85 DEG C can sterilize bacteria (namely pasteurization) in the aspect of bacteria control, the hot water reverse osmosis membrane applied in a water treatment system with bacteria control requirement such as treatment technology for bottled water and pharmaceutical water can play a role in disinfection and sterilization; and meanwhile, the anti-mixing design during designing avoids bringing the substances suchas cleaning solution or bacteria and the like into a pipeline to flow out along with the effluent to pollute the effluent quality, and meets the sanitation requirement of bacteria control and the safety requirement of mixing prevention.

Description

A kind of reverse osmosis membrane tube system

Technical field

The present invention relates to a kind of reverse osmosis membrane tube system.

Background technology

Counter-infiltration is to make solvent in the solution with enough pressure, general Chang Zhishui, and by reverse osmosis membrane, i.e. a kind of pellicle, and separating, direction is with to permeate direction opposite, can use that hyperfiltration greater than osmotic pressure separates, purification and concentrated solution.Utilize reverse osmosis technology can effectively remove dissolving salt, colloid in the water, impurity such as bacterium, virus, bacterial endotoxin and most of organic matter.The main separate object of reverse osmosis membrane is the ion range in the solution, need not chemicals and can effectively remove salt in the water, and system's desalination rate is generally more than 98%.So counter-infiltration be state-of-the-art also be a kind of desalination mode of energy-saving and environmental protection, also become the pre-desalinating process of main flow.According to the principle of counter-infiltration, the ion in the water is held back by reverse osmosis membrane, realizes the purpose of desalination, and the fresh water after the desalination passes through, and flows out as water purification, or enters next step treatment process.

Fig. 1 shows reverse osmosis membrane pipe of the prior art, and Fig. 2 shows reverse osmosis membrane plumber of the prior art and makes connected mode schematic diagram under the state.As shown in Figure 1, situation according to the Inlet and outlet water water quality and quantity, a certain number of reverse osmosis membrane spare 1 is assembled in the putamina 2, former water is by the 1 back desalination of reverse osmosis membrane spare, fresh water after the desalination is collected the back by fresh water chamber 4 and is flowed out from water outlet 7, and former water cavity 3 is UNICOMs with dense water cavity 3, has marked the position of four dense water outs 6 among Fig. 1, be illustrated on the reverse osmosis membrane pipe except water outlet 7, but other places all opening as original water inlet 5 or dense water out 6.

Reverse osmosis membrane pipe of the prior art is generally parallel form, Fig. 2 shows the connected mode of three film pipes 8 under in working order that have in parallel, the former water inlet of described three film pipes 8 is connected respectively to branched pipe 9, and described branched pipe 9 is connected to former water inlet 10 through pump; The water outlet of described three film pipes 8 is connected respectively to water outlet 12, and the dense water out of described three film pipes 8 is connected respectively to dense water out 11.

Connected mode schematic diagram when Fig. 3 shows reverse osmosis membrane pipe Chemical cleaning in the prior art, as shown in Figure 3, former water inlet valve is closed, the water outlet valve closing, chemical cleaning solution 13 flows into from the reverse osmosis membrane original water inlet, flows out from dense water out.

There are following shortcoming in reverse osmosis membrane pipe unit of the prior art and system: the type of attachment of former water oral siphon and each film pipe is parallel form, branched pipe is many, in use, because the stopping state difference of every film pipe in the parallel connection, cause the assignment of traffic inequality in the branched pipe, so flow velocity difference wherein, finally causing has bacterium to generate in the pipeline, do not meet hygienic requirements; Film pipe level is installed, and may have hydrops to produce in the film pipe; Because reverse osmosis membrane can be held back all ions, therefore, when the reverse osmosis membrane pipe is cleaned, the active ingredient of cleaning fluid can only enter and clean former water cavity/dense water cavity, can't pass reverse osmosis membrane and enter and clean the fresh water chamber, after long-term the use, the bacterium that grows in the fresh water chamber can't be removed, and finally influences effluent quality; Do not consider anti-mixing, treatment fluid access/exit does not have the anti-design that mixes.

Summary of the invention

The purpose of this invention is to provide a kind of reverse osmosis membrane tube system that reduces bacteria breed in the branched pipe, guarantees described each film Guan Zhongwu hydrops, has control bacterium and anti-mixed ability.

For solving the problems of the technologies described above, the present invention takes following technical scheme: a kind of reverse osmosis membrane tube system, comprise a plurality of film pipes, each described film pipe comprises putamina and a plurality of reverse osmosis membrane spares in the described putamina of packing into, described each film pipe also comprises former water inlet, water outlet and dense water out, it is characterized in that: the former water inlet of from a plurality of described film pipes one film pipe of former water flows into, the connection of connecting successively of the dense water out of described a plurality of film pipes.

Further, the water outlet of described a plurality of film pipes is in parallel.

Further, described reverse osmosis membrane tube system comprises that also anti-loading in mixture put.

Further, described anti-load in mixture put by make the access point blind pipe the shortest, at each cleaning fluid pipeline exhaust-valve is set, at least one anti-butterfly valve that mixes respectively is set before and after the access point on the access point main line realizes.

Further, described each film pipe has 2 ‰ angles of inclination at least to the discharge outlet direction.

Further, but described reverse osmosis membrane spare withstand hot water.

Further, described reverse osmosis membrane tube system also comprises the CIP station.

Further, increase hot water cleaning CIP circulating line at described reverse osmosis membrane tube system water outlet place.

Further, the cleaning fluid in the fresh water chamber of described each film pipe is back to the CIP station.

Further, described reverse osmosis membrane tube system also comprises CIP station heating and cooling system.

Film spare and the putamina of the hot water reverse osmosis membrane that adopts among the present invention are the same with general reverse osmosis membrane from the appearance, but reverse osmosis membrane wherein is except the deionized ability of the desalination with common reverse osmosis membrane, but withstand hot water also; Because aspect the control bacterium, 70-85 ℃ of hot water gets final product dissipation bacterium, i.e. pasteurization, therefore, this hot water reverse osmosis membrane is applied in the desalted water processing system of control bacterium requirement, for example bottled water, pharmacy water demineralizing treatment process can play the effect of disinfection.Simultaneously, when design, prevent mixing design, flow out with water outlet after avoiding bringing into materials such as cleaning fluid or bacterium in the pipeline, pollute effluent quality, more meet hygienic requirements and the anti-mixed safety requirements of controlling bacterium.

Description of drawings

Fig. 1 is reverse osmosis membrane pipe of the prior art.

Fig. 2 is the connected mode schematic diagram under the reverse osmosis membrane tube system duty of the prior art.

Fig. 3 is reverse osmosis membrane tube system of the prior art connected mode schematic diagram when cleaning.

Fig. 4 is the connected mode schematic diagram under the reverse osmosis membrane tube system duty of the present invention.

Fig. 5 is the connected mode schematic diagram of reverse osmosis membrane tube system of the present invention when hot water cleans.

The specific embodiment

Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.

Fig. 4 shows the connected mode schematic diagram under a kind of reverse osmosis membrane tube system duty of the present invention.As shown in Figure 4, propping up

film pipe

1,2,3 is the reverse osmosis membrane pipe, in by a plurality of

film pipes

1,2,3 reverse osmosis membrane tube systems of forming, the dense water out 5 of a film pipe 3 links to each other with the former water inlet 5 of a film pipe 2, and the dense water out 5 that props up film pipe 2 simultaneously links to each other with the former water inlet 5 of a film pipe 1.By the dense water out of each film pipe connect with the former water inlet 5 of an adjacent film pipe, can reduce the branch that former water is intake, this also must reduce the hydrops in the water inlet branched pipe of former water, thereby has also just solved the problem of bacteria breed in the branched pipe.

Preferably, each film pipe has 2 ‰ angles of inclination at least to the discharge outlet direction, guarantees each film Guan Zhongwu hydrops.

Preferably, between the former water inlet 4 of former water inlet 6 and a film pipe 3, be provided with anti-loading in mixture and put 9.Further, can also corresponding anti-loading in mixture also be set respectively at the water outlet 7 of reverse osmosis membrane tube system and dense water out 8 places and put 9, put 9 constituted mode and will in following Fig. 5, prevent automatically being described in detail in the mixed related content that designs about described anti-loading in mixture.

Fig. 5 shows the connected mode schematic diagram of a kind of reverse osmosis membrane tube system of the present invention when hot water cleans.As shown in Figure 5, increase hot water cleaning CIP (Cleaning in Place, online cleaning) circulating line at reverse osmosis membrane tube system water outlet place; Hot water 12 can see through the hot water reverse osmosis membrane, and the former water cavity of reverse osmosis membrane/dense water cavity and fresh water chamber can be cleaned by hot water; The cleaning fluid in fresh water chamber also must be back to the CIP station.

Further, as shown in Figure 5, mix design at the former water water intake end of counter-infiltration, dense water water side, fresh water water side and hot water cleaning fluid access point place by automatically anti-, that is: the access point blind pipe the shortest, at each CIP cleaning fluid pipeline exhaust-valve 11 is set, an anti-butterfly valve 10 that mixes respectively is set before and after the access point on the access point main line; Mix design and also namely formed among the present invention anti-loading in mixture shown in Figure 4 and put 9 by automatically anti-.Only show among Fig. 5 RO water inlet, hot water access point anti-and mix design, the design class of other point seemingly, therefore not shown other point anti-mixes design.

Further, as shown in Figure 5, be that hot water cleans owing to what carry out, therefore, be to guarantee effective utilization of hot water reverse osmosis membrane and the aseptic requirement of system's water outlet, being simultaneously need increase CIP station heating and cooling system by protection hot water reverse osmosis membrane.Its reason is: when doing cleaning with hot water 12, treatment fluid need be warming up to 75-85 ℃, therefore needing increases a temperature elevation system, and this temperature elevation system can be heater, preferably, this heater can be the board-like serial heat exchanger of European brand Alfalaval; Simultaneously, after processing finished, the hot water reverse osmosis membrane will be lowered the temperature with the cooling rate of setting, and therefore also needs to increase a cooling system to meet the demands, if do not carry out this design, system roll-back and life-span was recovered all extremely harmful.

Film spare and the putamina of the hot water reverse osmosis membrane that adopts among the present invention are the same with general reverse osmosis membrane from the appearance, but reverse osmosis membrane wherein is except the deionized ability of the desalination with common reverse osmosis membrane, but withstand hot water also; Because aspect the control bacterium, 70-85 ℃ of hot water gets final product dissipation bacterium, i.e. pasteurization, therefore, this hot water reverse osmosis membrane is applied in the desalted water processing system of control bacterium requirement, for example bottled water, pharmacy water demineralizing treatment process can play the effect of disinfection.Simultaneously, prevent mixing design when design, flow out with water outlet after avoiding bringing into materials such as cleaning fluid or bacterium in the pipeline, pollute effluent quality, the reverse osmosis membrane tube system among the present invention more meets hygienic requirements and the anti-mixed safety requirements of controlling bacterium.

Claims

1. reverse osmosis membrane tube system, comprise a plurality of film pipes, each described film pipe comprises putamina and a plurality of reverse osmosis membrane spares in the described putamina of packing into, described each film pipe also comprises former water inlet, water outlet and dense water out, it is characterized in that: the former water inlet of one the film pipe of former water from a plurality of described film pipes flows into, the connection of connecting successively of the dense water out of described a plurality of film pipes, described reverse osmosis membrane tube system comprise that also anti-loading in mixture put.

2. a kind of reverse osmosis membrane tube system as claimed in claim 1, it is characterized in that: the water outlet of described a plurality of film pipes is in parallel.

3. as each described a kind of reverse osmosis membrane tube system of claim 1-2, it is characterized in that: described anti-load in mixture put by make the access point blind pipe the shortest, at each cleaning fluid pipeline exhaust-valve is set, at least one anti-butterfly valve that mixes respectively is set before and after the access point on the access point main line realizes.

4. a kind of reverse osmosis membrane tube system as claimed in claim 3, it is characterized in that: described each film pipe has 2 ‰ angles of inclination at least to the discharge outlet direction.

5. a kind of reverse osmosis membrane tube system as claimed in claim 4 is characterized in that: but described reverse osmosis membrane spare withstand hot water.

6. a kind of reverse osmosis membrane tube system as claimed in claim 5 is characterized in that: described reverse osmosis membrane tube system also comprises the CIP station, i.e. online cleaning station.

7. a kind of reverse osmosis membrane tube system as claimed in claim 6 is characterized in that: increase hot water cleaning CIP circulating line at described reverse osmosis membrane tube system water outlet place, i.e. online clean cycle pipeline.

8. a kind of reverse osmosis membrane tube system as claimed in claim 7 is characterized in that: the cleaning fluid in the fresh water chamber of described each film pipe is back to the CIP station, i.e. online cleaning station.

9. as each described a kind of reverse osmosis membrane tube system of claim 5-8, it is characterized in that: described reverse osmosis membrane tube system also comprises CIP station heating and cooling system, i.e. online cleaning station heating and cooling system.