How does Dow DOW resin work?

Blue Film:

How Dow ion exchange resins work:

1.How cation exchange resins work:This kind of resin contains a large number of acidic groups, such as sulfonic acid group-SO3H, which is easy to dissociate H+ in solution, so it is strongly acidic.

After the resin is dissociated, the negative charged groups contained in the body, such as SO3-, can adsorb other cations in the binding solution. These two reactions cause the H+ in the resin to be exchanged with the cations in the solution. Strong acidic resins have a strong dissociation ability, and can dissociate and produce ion exchange in both acidic or alkaline solutions.

2.How Anion Exchange Resins Work:This type of resin contains a strong basic group, such as a quaternary amine group (also known as a quaternary amine group)-NR3OH (R is a hydrocarbon group), which can dissociate OH- in water and is strongly alkaline.

The positive electric group of this resin can bind to the adsorption of anions in solution, resulting in anion exchange. This resin is very dissociative and works well at different pH levels. It is regenerated with a strong base such as NaOH.

In the ion exchange process, the charged cations and anions in the solution are replaced by a solid medium.

The medium (ion exchanger) is adsorbed and an equivalent amount of charged ions of the same charge is displaced.

There is no fixed one, foreigners translate Chinese words just like we translate their words, they can't understand how we translate facebook into facebook**. For this, there is no need to delve into this, just know. Nothing special.

It's just a symbol.

dow chemical

n.The Dow Chemical Company. Dow is a diversified chemical company; Using the power of science, technology, and the "human element" to continuously improve the essential elements that drive human progress.

Sales in 2007 amounted to $54 billion. Dow provides a wide range of products and services to customers in 160 countries and territories around the world; and apply the principles of sustainable development to chemistry and innovation; To enable customers to provide better products for the consumer market;

Because it's a company.

It is an American chemical company that was born in 1897.

Abbreviation:

The full name of dowx in Chinese:

The Dow Chemical Company.

Full name of Token: DOW Chemical Company

Dow combines the power of the "human element" with a passion for science and technological innovation that is what is essential to human progress. The company connects with the principles of sustainability, chemistry and innovation to help solve many of the world's most challenging problems such as the need for clean water, renewable energy generation and energy conservation, and increased agricultural productivity. The Dow's diversified portfolio of industry-leading specialty chemicals, advanced materials, agros and plastics businesses provides technology-based products and solutions to customers in a wide range of high-growth industries such as electronics, water, energy, coatings and agriculture in approximately 160 countries.

In 2009, the Dow had annual sales of $45 billion and employed about 52,000 people worldwide. The company manufactures more than 5,000 products in 214 and 37 countries**. "Dow" or "Company" refers to The Dow Chemical Company and its affiliates, unless otherwise expressly stated.

The headquarters is located in Midland, Michigan, USA

Dow ultrafiltration membranes have high filtration accuracy and good water quality, and can be used in various industrial sewage treatment links.

The main methods for the removal of harmful substances by ultrafiltration membranes are:

Dow ultrafiltration membranes mainly filter incoming water according to pore size, which is usually between microns, which means that ultrafiltration membranes can only filter impurities larger than its pore size, but cannot filter impurities smaller than the membrane pore size. Substances filtered by ultrafiltration membranes in various industries:

Ultrafiltration membranes in the food industry can effectively filter proteins, lactose, colored proteins, polysaccharides and other colloidal impurities in milk or whey.

Biochemical fermentation broth separation and refining, enzyme concentration and refining, sugar and xylitol clarification and filtration.

Ultrafiltration membranes can effectively filter most of the bacteria in the water, and can achieve the effect of sterilization and disinfection.

In the field of medicine, ultrafiltration membranes can filter impurities such as enzymes, viruses, nucleic acids, and special proteins.

In biochemical production, drugs (such as alkaloids, hormones, etc.) extracted from animals and plants can be <>

Dow ultrafiltration membrane - water sky blue environmental protection.

Impurities such as colloids, rust, suspended solids, sediment, and macromolecular organic matter can also be removed by ultrafiltration membranes.

Electrophoretic paints in industry can also be retained, and ultrafiltration membranes with excellent anti-fouling properties can also be used for electrophoretic paints**.

Ultrafiltration membrane is a microporous filtration membrane with consistent pore size specifications and a nominal pore size range of microns. Ultrafiltration membrane is one of the earliest polymer separation membranes developed, and ultrafiltration units were industrialized in the 60s. So, how can ultrafiltration membranes effectively remove harmful substances?

1. For the removal of suspended solids and microorganisms.

1) It has a high removal ability for suspended solids that cause turbidity in water quality; Permeate turbidity usually reaches the following.

2) It has the above removal ability for microorganisms such as E. coli. Since microorganisms are usually above microns, micron ultrafiltration membranes are highly effective at removing microorganisms.

3) It has more than 90-95% removal ability for iron, manganese, aluminum and other colloids. However, it does not have the ability to remove dissolved iron ions.

2. For the removal of iron and manganese.

Ultrafiltration can remove iron and manganese in colloidal or suspended solids, but can not remove dissolved ferrous ions and divalent manganese ions in water, and must be oxidized with oxidation treatment to quickly oxidize ferrous iron into ferric iron, form insoluble iron colloids near neutral pH, and oxidize divalent manganese into tetravalent manganese, which is removed by ultrafiltration filtration. In conventional water treatment processes, iron-manganese removal filters are used to remove dissolved iron and manganese from the water.

3. For the removal of fluorine.

The fluoride in the source water exceeds the standard, but ultrafiltration itself cannot remove the dissolved fluoride ions. At present, the fluoride removal process mainly includes activated alumina adsorption filtration, bone charcoal adsorption filtration, aluminum salt coagulation and precipitation, electrocoagulation, electrodialysis, etc., and the alum flower particles formed by aluminum salts Al(OH)3(S) have a certain adsorption capacity for fluoride ions in water, and then the purpose of fluoride removal is achieved with the help of ultrafiltration for the colloids formed by the hydrolysis of aluminum salts.

The Dowfax DF series are all EO PO block polyethers that vary in function depending on the block position and molecular weight.

Dow BW30-400IG is an industrial-grade, brackish water desalination reverse osmosis membrane element used in the field of industrial water treatment. It maintains the same flow and desalination properties as the BW30-400 membrane element. BW30-400IG components can be cleaned over a wide pH range (pH 1-13); In the field of industrial water treatment systems, the BW30-400IG is a direct replacement for the BW30-400.

The difference between the BW30-400IG and the BW30-400 is that the BW30-400IG does not have ANSI Standard 61 certification and Kiwa certification, providing a more cost-effective option for industrial-grade applications. BW30-400IG and Italian Oltremare (BR3-8040) correspond, they can be substituted for each other, the difference is as follows:

The BR3-8040 is NSF certified, which is more compliant with food safety and drinking water safety regulations than the BW30-400IG. Knowledge: NSF is a neutral third-party accreditation of U.S. and international standards, and has been approved and certified by 13 national or industry authorities, including the American National Standards Institute (ANSI), the U.S. Occupational Safety and Health Administration, and the Canadian National Standards Council.

NSF is a designated Collaborating Center for Food Safety and Safe Drinking Water for Food Safety and Handling.

Let me make it clear that the third model is not Dow. The IG is mainly used in the food industry, and the non-IG is mainly used in the industrial field. We also learned about it through Shanghai Baozi.

It is produced by Dow in cooperation with DuPont, and has just entered China, and China's operation headquarters is in Shanghai. With the strong technical strength and brand influence of the head office, I believe that it will make a difference in the Chinese market! At present, it is estimated that there will be no fakes on the market, I don't know how the brand positioning is, if it is the same as Weigu, Opas, and Amber, in the high-end market, we may not get the benefits!

Dow's strength is well known, and I believe that its brands should also be extraordinary!

I'm also going to make this brand now, a friend introduced me, he has been doing it for more than three months, the business is very good, I heard that the support is very strong, and the marketing strategy is also very avant-garde.