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2: Clarification mechanism of coagulant

Chemical coagulation is a process in which chemical agents (coagulants) are added to water treatment to make colloidal dispersion system destabilize and agglomerate. In the coagulation process, small suspended particles and colloidal impurities are aggregated into larger solid particles to separate particulate impurities from water, which is called coagulation clarification.

After adding coagulant into water, colloidal particles and other small particles can be polymerized into larger flocs through the comprehensive action of mixing, coagulation and flocculation. The whole process of coagulation and flocculation is called coagulation.

(1) Destabilization and condensation of colloids

Adding electrolyte to water can compress the electric double layer and destabilize the colloid. The main mechanism is that the electric double layer of colloidal particles in water is compressed or neutralized by adding aluminum salt or iron salt coagulant. The coagulant and raw water are mixed rapidly and evenly, and a series of chemical reactions are produced to destabilize. This process takes a short time, generally about 1 min. Some cationic polymers can also play a role in the destabilization and condensation of colloids in water. These polymers have a long chain structure and positive charge in water. Their destabilization and condensation of colloids in water is due to the interaction of van der Waals force adsorption and electrostatic attraction.

(2) Flocculation and formation of floc (alum)

The particle size of the initial flocculate formed by colloid destabilization and coagulation in water is generally more than 1 m. at this time, Brownian motion can no longer push them to collide and form larger particles. In order to make the initial flocs collide with each other to form large flocs, it is necessary to input additional energy into the water to produce a velocity gradient. Sometimes it is necessary to add organic polymer flocculant into water, and the adsorption bridging effect of long chain molecules of flocculant is used to improve the probability of collision and adhesion. Flocculation efficiency usually increases with the increase of flocculate concentration and flocculation time.

Compared with polyaluminum chloride, polyaluminum chloride has the advantages of high density, fast settling speed and wide pH adaptability; the coagulation effect is less affected by temperature than that of polyaluminum sulfate; however, when adding ferric salt, it should be noted that when the equipment is not in normal operation, the iron ions will make the effluent color, and may pollute the subsequent desalination equipment.

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In conclusion, rutile titanium dioxide is a multifaceted material with a plethora of uses spanning from the cosmetic to the technological sector. Its unique combination of physical characteristics makes it an indispensable component in numerous industrial processes and consumer products. As research continues, new applications for this versatile mineral are likely to emerge, further cementing its status as a cornerstone material in modern industry.

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  • Egyptian cotton is recognised as the finest cotton for bed linen the world over and it’s our favourite! Bed linen made from Egyptian cotton is strong, light and breathable. One of the great benefits of Egyptian cotton is that the feel improves with use and with each wash.

  • 7. Bamboo 

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  • Mattress sheets also play a significant role in creating a cozy ambiance
  • Lyocell is similar to viscose in that it is a regenerated cellulose fabric, but is made with a more eco-friendly process. TheU.S. Federal Trade Commissiondefines lyocell as rayons “composed of cellulose precipitated from an organic solution in which no substitution of the hydroxyl groups takes place and no chemical intermediates are formed” — essentially meaning it does not use the harmful chemical solvents normal viscoses use. Lyocell production also results in little waste product, but it is still relatively energy intensive.

  • These sheets embody a unique blend of strength and suppleness. The 1800 thread count allows for a tighter weave, resulting in sheets that are not only smooth but also resistant to wear and tear. They provide a velvety touch against the skin, enveloping you in a cocoon of lavishness each night.
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  • The primary advantage of waterproof bed sheets is their ability to maintain high levels of hygiene. In a hospital setting, where infection control is paramount, waterproof sheets minimize the risk of bacteria and fungi growth, reducing the chances of cross-contamination. They are easy to clean and disinfect, saving time and effort for healthcare staff who often face the daunting task of frequent linen changes.
  • Polyester, on the other hand, is a synthetic fiber that excels in durability and resistance to wrinkles, shrinking, and fading. It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period50 cotton 50 polyester percale sheets. The blend of polyester with cotton enhances the strength and resilience of the percale sheets, reducing the need for frequent ironing.
  • On the other hand, the duvet cover is the decorative and protective layer that slips over the insert. It serves both aesthetic and functional purposes. A duvet cover can be thought of as the clothing for your bed—easily changeable to suit the season, refresh a room's decor, or simply for cleaning. They come in an array of fabrics, from crisp cotton percales to luxurious silks and cozy flannelettes, each adding a different texture and feel to your sleeping experience.
  • Sheet embroidery, with its origins dating back to the early Chinese dynasties, has evolved through the ages, adapting to various regions and cultures. It is characterized by its use of sheer, translucent fabrics like silk or chiffon, onto which vibrant threads in contrasting colors are skillfully woven. The result is a mesmerizing blend of transparency and texture, creating a visual spectacle that is both subtle and striking.
  • Fabric, a fundamental element in our daily lives, comes in an array of widths, textures, and colors. However, the 150cm width holds a unique position. It offers a perfect balance between coverage and manageability, making it ideal for a multitude of applications. This width allows for efficient use of material, reducing waste and subsequently, production costs.
  • Short on time? Go ahead and check our quick detailed in-depth video breakdown between linen and cotton sheets.