Reverse Osmosis System Specific Requirements

Reverse Osmosis System The reverse osmosis system includes pretreatment of raw water, reverse osmosis device and three parts of reprocessing. The reverse osmosis system has its specific requirements for pretreatment of raw water.

Because of the variety of raw water, its composition is very complex, in view of raw water quality and RO system recovery, such as the main process design parameters, Reverse Osmosis System select the appropriate pretreatment process system, reduce the fouling and scaling of ro membrane, prevent ro membrane desalting rate, water production rate, especially for the current scarcity of water, deteriorating water quality, choose a correct pretreatment system, will directly affect the entire water treatment system function. Known。 RO system operation failure, most of the situation is due to the function of the pretreatment system is not perfect. Reverse Osmosis System In order to ensure the normal operation of the reverse osmosis process, the raw water must be treated strictly.

1. Remove suspended solids and reduce turbidity

2. Control microbial growth

3, inhibition and control of the deposition of micro-soluble salts

4. Adjustment of inlet temperature and ph

5. Removal of organic matter

6. Precipitation control of metal oxides and silicon

Chemical oxidation treatment methods are usually used to decompose organic pollutants in water by strong oxidant a chemical treatment method, at the same time, Reverse Osmosis System some oxidants can go out in the water color, taste, odor and iron, enzyme bath and so on. Some oxidants are also good fungicides.

Chemical oxidizer treatment process can be combined with coagulation, filtration, adsorption and other unit processing processes to achieve good treatment results. Industrial water treatment commonly used oxidant mainly include: chlorine, sodium hypochlorite, chlorine dioxide, Reverse Osmosis System potassium permanganate, ozone, hydrogen peroxide and so on.

Medicament softening is the principle of using chemical precipitation, according to the principle of solubility product, the hardness of water contained in the appropriate pharmaceutical action to form insoluble compounds and the removal of the project, the most commonly used in water treatment is the combination of calcium and magnesium ions, followed by the metal ions of the hydroxide precipitation. Reverse Osmosis System The medicament softening is usually combined with the coagulation, settling or clarifying process.

The softening agent used in water treatment plant mainly consists of lime, soda ash, caustic soda, trisodium phosphate and sodium dihydrogen phosphate. Different types of water quality can be treated with different reagents. Generally for high hardness, high alkalinity of water using lime-softening method, high hardness, low alkalinity of water using lime-soda, and for high alkalinity, negative hardness (that is, Reverse Osmosis System the total alkalinity is greater than the total hardness) of the water using lime-gypsum method.

Coagulation is directed to the water to add a certain dose of chemical agents, these chemicals in the water hydrolysis, and water in the colloidal particles collide with each other, the electrical neutralization, resulting in adsorption, bridging and net trapping, Reverse Osmosis System thus forming large floc particles and settling from the water, has played a role in reducing particles suspended solids and colloid.

Sometimes using coagulant alone can not achieve the desired effect, it is possible to add adjuvant drugs to improve the coagulation effect. This adjuvant is called coagulant, the coagulant itself can not produce the same effect as coagulants, can only improve the structure of the floc, Reverse Osmosis System so that the floc particles increased, strong and heavy. Therefore, the use of coagulant alone can not play a very good effect.