Home > News > Content

Reverse Osmosis System Preprocessing

Reverse osmosis system, including raw water pretreatment, Reverse Osmosis System reverse osmosis device, post-processing three parts. The reverse osmosis system has its specific requirements for the pretreatment of raw water.

As the raw water variety, its composition is also very complex, for the raw water quality and RO system recovery rate and other major process design parameters, Reverse Osmosis System select the appropriate pretreatment process system to reduce the RO membrane dirt, scaling, to prevent RO membrane desalination Rate, water production rate, especially for the current lack of water resources, water quality deteriorated, choose a correct pretreatment system, will directly affect the function of the entire water treatment system. As we all know. Reverse Osmosis System RO system operation failed, most of the situation is due to imperfect preprocessing system caused. In order to ensure the normal process of reverse osmosis, raw water must be strictly handled.

Chemical oxidation treatment is usually a strong oxidant decomposition of organic pollutants in water a chemical treatment method, at the same time, some of the oxidant can go out of water color, smell, smell and iron, enzyme bath and so on. Some oxidants are also good fungicides.

Chemical oxidant treatment process can be combined with coagulation, filtration, adsorption and other unit processing technology to achieve a good treatment effect. Reverse Osmosis System Industrial water treatment commonly used oxidants are: chlorine, sodium hypochlorite, chlorine dioxide, potassium permanganate, ozone, hydrogen peroxide and so on.

Pharmacy softening is the principle of chemical precipitation, according to the principle of solubility product to the hardness of the water contained in the appropriate chemical agent under the action of the formation of insoluble compounds were removed works, the longest process of water treatment is calcium and magnesium ions Combined with Shen Ding, followed by metal ions of chlorine oxide compound settling. Reverse Osmosis System Softening of the agent is usually carried out in conjunction with flocculation, sinking or clarification.

Water treatment plant softening agent mainly by lime, soda ash, toxic sodium, trisodium phosphate, disodium hydrogen phosphate and so on. According to the different types of raw water quality can be combined with different agents for processing. Generally high water hardness, high alkalinity of water using lime softening method, high hardness, low alkalinity of water using lime - soda ash method, Reverse Osmosis System and for high alkalinity, negative hardness (ie, the total alkalinity is greater than the total hardness) of water using lime - gypsum method.

Coagulation is to add a certain amount of chemical to the water, these chemicals in the water hydrolysis, and water particles collide with each other, the occurrence of electrical neutralization, Reverse Osmosis System resulting in adsorption, bridging and network capture role, thus forming a large Of the floc particles and sedimentation from the water, played a role in reducing the suspension of particles and colloids.

Sometimes the use of coagulants alone can not achieve the desired effect, you can add auxiliary drugs to improve the effect of coagulation. This auxiliary agent called coagulant, coagulant itself can not produce the same role as coagulants, can only play to improve the floc structure, floc particles increased, Reverse Osmosis System tough and heavy. So the use of coagulant alone can not play a very good effect.

Activated carbon adsorption is the use of activated carbon porous nature, so that one or more harmful substances in water is adsorbed on the solid surface removal method. Activated carbon adsorption for the removal of organic matter in water, colloid, microbial, residual chlorine, smell and so has a good effect. Reverse Osmosis System At the same time because the activated carbon has a certain reduction effect, so for the water oxidants also have a good removal.