Can anyone provide me with a manual of reverse osmosis membrane technology

Reverse osmosis membrane replacement details:

1. Turn off the power of the instrument and close the water inlet switch valve at the tee of the tap first.

2. Unplug the quick-plug water pipes at both ends of the membrane shell - inlet water pipe, outlet water pipe, and waste water pipe, and pay attention to the three water pipes when pulling out and placing them, so as to prevent them from being plugged into the wrong position during installation.

3. Facing the equipment, hold the shell tightly with your left hand, and unscrew one end of the cover with your right hand.

4. Hold the reverse osmosis membrane shell tightly with your left hand, and then clamp the old reverse osmosis membrane with pliers and pull it out vigorously.

5. Plug the new reverse osmosis membrane into the membrane tube until one end of the two small black "O" rings reaches the bottom end of the membrane shell, and then tighten the membrane shell cover.

6. Plug the membrane shell into the base bayonet according to the original direction, and then insert the corresponding water pipe into the plug-in connector and snap on the blue clip.

7. Open the water inlet switch valve at the tee of the original faucet to observe whether there is water leakage, if not, replace it.

Precautions for reverse osmosis membrane replacement:

1. Model: There are many models of the same brand, and the inlet water pressure is different and the desalination rate is different, which will cause the produced water to fail to meet the requirements of reverse osmosis equipment, therefore, before replacing the components, you should consult the manufacturer or reverse osmosis equipment engineering company.

2. Brand: It can be roughly divided into imported reverse osmosis membrane and domestic reverse osmosis membrane. There are differences in the service life and water quality of different brands, so when customers choose, they should not only look at the best but also choose the right components according to their actual situation.

The reverse osmosis membrane replacement operation process is as follows:

1. Prepare the tools

1. Prepare all the tools that may be used in the construction process, such as: wrenches, pliers, buckets, scissors or knives, etc.

2. Clean the upstream inlet pipeline;

3. Carefully evaluate the quality of influent water;

4. Check whether there is leakage in the pipeline;

5. Prepare water-soluble lubricant (chemically pure glycerin);

6. Ensure that the parts and chemicals used are complete;

7. Check the operation of the pretreatment system and the normal water output.

2. Precautions

In the process of installation and replacement, try to avoid pulling to other pipelines to avoid water leakage.

3. RO film replacement steps

Turn off the plating ball valve and wait for about 10 minutes. (Let the system depressurize), unscrew the nut fitting on the right side of the membrane housing with your hand or tool, and pull out the water pipe. Facing the reverse osmosis water purifier, hold the membrane shell tightly with your left hand, and turn the tail end cover with your right hand.

If the rear activated carbon filter above the reverse osmosis membrane tubing prevents this step from operating, it can be slightly shifted or pulled out entirely, or if it is pulled out entirely, additional tubing may need to be disassembled. Close the pressure bucket ball valve, unscrew the nut fitting above it by hand or with a tool, and direct the hose into an empty bucket or sink. Hold the reverse osmosis membrane tube tightly with your left hand, and then clamp the old reverse osmosis membrane with forceps and pull it out of the membrane shell.

Open the envelope of the new reverse osmosis membrane and remove it. Plug the newly opened reverse osmosis membrane into the reverse osmosis membrane tubing until one end of the two small black rings reaches the bottom end of the membrane shell. In the same position as the membrane shell cap, tighten the membrane shell cap.

If necessary, adjust the fitting in a clockwise (locked) direction so that it points to the rear of the machine. Plug into the water pipe and tighten the fitting nut. (Don't forget to put the plug on it).

Open the plating ball valve. Let the water purifier run for more than two hours, so that the system enters the normal state of water production, and then connect the water pipe with the pressure bucket ball valve and open the pressure bucket ball valve.

Reverse osmosis membrane replacement details: first turn off the power of the instrument and close the water inlet switch valve at the tee of the faucet. Hand unplug the quick-plug water pipes at both ends of the membrane shell - water inlet pipes, outlet pipes, and waste pipes. Pay attention to distinguish the three types of water pipes when unplugging and unplugging to prevent misinsertion during installation.

It's to replace the filter element, buy it in advance online, remember to consult the specific model, and the merchant will teach you to replace it, which is very simple.

Cleaning method for reverse osmosis membrane contamination It is recommended to use a special cleaning solution for the membrane when cleaning the reverse osmosis membrane. It is very important to carry out chemical analysis of contaminants before determining the cleaning solution, and the detailed analysis and comparison of the analysis results can ensure the selection of the best cleaning agent and cleaning method, and the cleaning method and cleaning effect obtained during each cleaning should be recorded, so as to provide a basis for finding the best cleaning method under specific feed water conditions.

For inorganic contaminants, it is recommended to use a citric acid cleaning solution; For calcium sulfate and organic matter, it is recommended to use sodium tripolyphosphate and EDTA tetrasodium salt cleaning solution; For serious organic contamination, it is recommended to use sodium tripolyphosphate and sodium dodecylbenzene sulfonate cleaning solution. All cleaning solutions can be washed for up to 60 minutes at a maximum temperature of 104 degrees Fahrenheit (40 degrees Celsius), the amount of supplies required is measured in 100 gallons (379 liters), the cleaning solution is prepared in proportion to the chemicals and cleaning water, and the solution should be prepared and mixed with free chlorine-free reverse osmosis products.

Chemical cleaning and water flushing of reverse osmosis membrane elements During cleaning, the cleaning solution is circulated in the concentrated water channel of the membrane at low pressure and high flow, and the membrane element is still installed in the pressure vessel and a special cleaning device is required to complete the work.

General steps for cleaning reverse osmosis membrane elements:

1.Clean, free chlorine-free reverse osmosis product water is pumped from the cleaning tank (or equivalent water source) into the pressure vessel and discharged for a few minutes.

2.Prepare the cleaning solution in the cleaning chamber with clean product water.

3.Circulate the wash fluid in the pressure vessel for 1 hour or a pre-set time, with a flow rate of 35 to 40 gallons for 8 or 40 gallon minutes (133 to 151 liter minutes), 15 to 20 gallon minutes (57 to 76 liters for 6-inch pressure vessels), and 9 to 10 gallon minutes (34 to 38 liters for 4-inch pressure vessels).

4.After cleaning, drain and rinse the cleaning chamber, then fill the chamber with clean product water for further rinsing.

5.Use a pump to pump clean, chlorine-free product water from the cleaning tank or corresponding water source into the pressure vessel and discharge it for a few minutes.

6.After flushing the reverse osmosis system, run the reverse osmosis system with the product water drain valve open until the product water is clean, foam-free, or detergent-free (typically 15 to 30 minutes).

Three physical cleaning methods for Drammel reverse osmosis membranes!

Citric acid mixed with water. First, the cleaning liquid is backflushed from the permeate end. Forward again, repeat twice. The membrane can also be removed to soak.

Reverse osmosis cleaning needs to determine the cleaning plan according to the pollution source, organic matter fouling, microbial fouling, scaling component analysis, etc.

The focus is on adjusting the operating parameters and reducing the number of cleanings according to the occurrence of fouling.

1.When the reverse osmosis system does not suffer from serious pollution, but only regularly cleans the case, the conventional cleaning method is used immediately, which is also one of the methods to test the RO membrane after contamination, and is generally used first. There are generally two ways of cleaning, physical cleaning and chemical cleaning.

Physical cleaning of reverse osmosis membrane is the use of mechanical scouring to remove the pollutants in the membrane element, restore the performance of the membrane element, and sometimes use various physical methods such as full flow, vibration, gas-water mixing, until ultrasonic and other physical methods to flush out the adsorbed pollutants.

3.Chemical cleaning is the use of corresponding chemicals to react with contaminants to dissolve them in water, and then discharge the membrane element to restore the performance of the membrane element. Particle-like pollutants with low adsorption, such as mechanical impurity particles, sand particles, activated carbon, iron filings, etc., can be washed to achieve a certain effect, and it is difficult to achieve the expected effect by using the method of washing for pollutants with serious pollution or strong adsorption of glue.

When rinsing has made it difficult to remove contaminants, the grate should be stopped and chemically cleaned. In order to improve the effect of chemical cleaning, choosing the right cleaning agent is the key issue for successful cleaning.

Summary. Schematic diagram of how to install reverse osmosis membrane.

<>Hello dear, I am happy to answer for you, how to install the reverse osmosis membrane schematic diagram.

PMW1VXU opens the shell of the machine, finds the water inlet end of the RO membrane shell, disconnects the water inlet pipe interface, unscrews the membrane shell cover, observes whether there are foreign objects and sundries in the membrane shell, opens the new film and packs it, slowly coats Vaseline on the inner end of the RO membrane (embedded with two black sealing rubber rings and a consumption banquet mold end), and then gently feeds it into the membrane shell and pushes the Zhixiang potato to confirm the push to the end, then screws on the membrane shell cover and tightens it.

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Operation of reverse osmosis membrane device and its backwashing operation: In order to ensure the long-term stable operation of the reverse osmosis system, it is necessary to configure the backwashing system, chemical dispersion cleaning system (optional), cleaning system and compressed air system. 1. Backwash systemThe backwash system includes a backwash water tank, a backwash water pump and a sodium hypochlorite dosing device.

The reverse osmosis water for the reverse osmosis water of the backwash tank is generally used for reverse osmosis, so it is possible to use a reverse osmosis water production tank instead of a separate backwash tank. Due to the frequent backwash technology, the reverse osmosis of the backwash pump should be set up separately. The parameters of the backwash pump can be selected as follows:

In order to inhibit the growth of bacteria in the membrane module, the sodium hypochlorite dosing device can be set separately. There are two ways to dosing: one is to add 1 5 pp mnaclo continuously or 10 15 pp mnaclo to the inlet water continuously for 30 to 60 minutes, once a day.

The other is to add 10 to 15 ppm naclo in the backwash water. The sodium hypochlorite dosing device includes the following equipment: hall concealment 2, chemical enhanced backwash system For raw water with poor water quality, it is recommended to increase chemical enhanced backwash during system operation.

Choose one of the acid or alkali washing devices, or both, according to the water quality. The equipment of the chemical dispersion noisy section cleaning system consists of a dosing box and a metering pump. The reverse osmosis inlet water of the chemically strengthened backwash acid dosing device may contain colloids or suspended solids of iron, aluminum and other metals, and may also have scaling tendencies such as hardness rise and reputation, and these impurities may cause inorganic contamination of the reverse osmosis membrane.

In this case, it is recommended to add a certain concentration of acid solution in the backwashing process for chemical enhanced backwashing, and the acid used can be selected according to the specific raw water quality conditions, such as hydrochloric acid, oxalic acid or citric acid.

The operation of the reverse osmosis membrane device and its backwashing operation. Reverse osmosis membrane physical backwashing operation steps: (1) Stop the device slowly reduce the operating pressure and gradually stop the device.

The rapid drop in pressure caused by the rapid shutdown will form water hammer, which will cause impact damage to the pipes, pressure vessels and membrane elements. (2) Adjust the valve firstly, fully open the concentrated water valve; Then close the water inlet valve; Then open the permeate valve fully (e.g., if the permeate valve is closed after the system is closed). If the permeate valve is closed incorrectly, the membrane element at the back end of the pressure vessel may cause mechanical damage to the membrane element due to the back pressure of the permeate water.

3) Start the low-pressure cleaning pump first; Then slowly open the inlet valve while observing the flow rate of the concentrated water flow meter; Adjust the inlet valve until the flow rate and pressure are adjusted to the design value; Finally, after 10-15 minutes, slowly close the inlet valve and stop the inlet pump. Hope it helps. If my answer is helpful to you, please give a thumbs up (in the lower left corner of the whispered banquet line evaluation), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress.

Finally, I wish you good health and a good mood!

Nothing is so absolute, not to mention that reverse osmosis is the use of pressure to force molecules through.

Reverse osmosis (RO) technology.

The raw water enters the membrane shell, is blocked by the sealing ring, passes through the end face of the membrane, passes through the membrane under the action of pressure, flows to the water collection pipe through the water guide network, and the pure water flows out of the pure water port after being collected by the water collection pipe, and the wastewater flows out from the raw water diversion network.

Reverse osmosis: accuracy is microns. Insoluble substances (suspended solids such as rust and sediment), colloidal substances, microorganisms, organic matter and soluble substances in aqueous solutions cannot pass through the reverse osmosis membrane.

How Reverse Osmosis Membranes Work:

1.With the reverse osmosis membrane as the isolation medium, and then the solution of different densities is added on both sides of the membrane, under natural conditions, the low density side will naturally penetrate to the high density side, and at this time, if the pressure is applied to the high density side by external force, the solution will penetrate in the opposite direction, this process is called reverse osmosis, which is the basic principle of reverse osmosis membrane.

2.The tap water is pressurized by the pressurized pump, so that the water molecules in the tap water pass through the reverse osmosis membrane under high pressure, and the dissolved substances in the tap water cannot pass through the membrane pores of the reverse osmosis membrane (only water molecules can pass through) because of the large volume, and are intercepted by the reverse osmosis membrane and discharged with the flushing water, so as to achieve the purpose of separating impurities from water molecules.

Why can reverse osmosis membranes filter impurities?

There are many small membrane pores on the reverse osmosis membrane, the diameter of the pore size is about nanometer to nanometer, converted to micron is between micron and micron, relative to the ions, bacteria, viruses, and other molecules in the water, the general bacteria and viruses are 5000 times larger than the pore size, so these impurities can not pass through the reverse osmosis membrane at all, only water molecules can pass through, so that the impurities and water molecules are separated, which is why the reverse osmosis membrane can filter impurities in the water.

Reverse osmosis membrane separation technology:

The separation process of RO reverse osmosis membrane technology is a membrane process that uses the semi-permeable membrane to allow only water to pass through and intercept the dissolved solids, and uses the osmotic pressure difference on both sides of the membrane as the driving force to make water enter the dilute solution side through the semi-permeable membrane from the concentrated solution side, so as to realize the separation of solute and solvent on the concentrated solution side. Therefore, the separation process of RO membrane technology should meet the following conditions:

First, the semi-permeable membrane used should have the characteristics of high permeability and high selectivity, and second, the net pressure difference between the two sides of the semi-permeable membrane is greater than zero.

RO reverse osmosis membranes are currently mainly used in industrial water treatment and household water, mainly in drinking water filtration and industrial water purification. The water quality treated by RO reverse osmosis technology is generally of high purity, and if the water quality wants to meet the standards of ultrapure water or purified water, it must be treated with RO membrane and then purified by EDI or ultrapure water resin.