It is well known that magnesium hydroxide can be used as a flame retardant, but many people do not know, in fact, magnesium hydroxide can still treat sewage, especially in the treatment of dyeing wastewater, played a crucial role.
In textile industry, printing and dyeing waste water pollution is serious, not only contains significant amounts of organic pollutants and some toxic substances, have color contains certain dyes and at the same time, how to remove the color and organic pollutants is the key of the governance in printing and dyeing wastewater decolorizing treatment in recent years, magnesium salt law shows excellent decolorizing effect its decoloring principle is the use of magnesium salt alkaline generate positively charged magnesium hydroxide precipitation, strong adsorption of anionic dye negatively charged and make the dye wastewater decolorizing, think in the in-depth research, magnesium salts adsorption placed time shoulds not be more than otherwise would occur after desorption influence decoloring effect, therefore, carries on the solid-liquid separation for as soon as possible Decolorization has an important effect.
Magnesium hydroxide adsorption has a better decolorization effect, when the combination of the two decolorization effect is better combined with magnesium hydroxide adsorption by the microfiltration treatment, the permeate is colorless, clear and transparent, is very likely to be used as printing and dyeing water recovery, which is simple magnesium hydroxide adsorption can not achieve;
Look from the technological process, magnesium hydroxide adsorption process often involves the process of flocculation, sedimentation, process complex, covers an area of big and may have the possibility of dye molecules desorption, and by combining microfiltration process of adsorption, can add pretreatment agent in microfiltration device, direct cycle filtering, realized the integration of the rapid separation, the process is simple. Using magnesium hydroxide adsorption pretreatment of ceramic membrane microfiltration technology of printing and dyeing wastewater containing reactive dyes decolorizing treatment is completely feasible, has the advantage that the decolorization rate is high, the operation is simple, has a great feasibility and economic value.
Meishen is the world's leading producer of magnesium oxide, Magnesium oxide is an oxide of magnesium, an ionic compound. It is a white solid at room temperature. Magnesium oxide exists in the form of periclase in nature and is a raw material for magnesium smelting. Magnesium oxide is white or light yellow powder, odorless, tasteless, this product is insoluble in water and ethanol, melting point 2852 ° C, boiling point 3600 ° C, magnesium oxide has high refractory insulation properties. It can be converted into crystal by burning at a temperature above 1000 ° C. If it rises above 1500 ° C, it will form a burnt magnesia or sintered magnesia.
Magnesium oxide can be used in the manufacture of metallurgy, smelting, advanced magnesia bricks, refractory materials and moisturizing materials. It is also widely used in rubber, rubber sheet, rubber products, pharmaceutical industry, food industry, plastic sheet accelerator, glass fiber reinforced plastics and Surface coating of silicon steel sheet, paper production, steel ball polishing, leather treatment, insulation materials, grease, dyes, ceramics, desiccant, resin, flame retardant, etc.
Hebei Meishen Chemical Technology Group is the main magnesium oxide producer in the world. It is also the largest magnesium salt producer in China and has won the ISO9002 quality system certification. It also has GMP-Certification.
With rich experience in the research, development, production, management and operation of magnesium oxide products, Meishen Group has always attached great importance to the research and development of new products and strict requirements on product quality. Meishen has a high-level sales team. The business covers more than 20 countries and regions around the world. It is widely welcomed by new and old customers.
Meishen has a high-level sales team. The business covers more than 20 countries and regions around the world. It is widely welcomed by new and old customers.