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Manganese Greensand Plus

Kami adalah importir distributor agen dan supplier manganese greensand plus terlengkap menyediakan berbagai kebutuhan spare part filter untuk keperluan industri dengan price harga terbaik

The process for the removal of iron, manganese and hydrogen sulfide from groundwaters has been used since the 1950s in the United States. Today there are two distinct treatment processes associated with the use of manganese greensand; specifically, the "IR" (intermittent regeneration) and the "CR" (continuous regeneration), both of which have become industry standards. In addition, manganese greensand can, under certain conditions, remove manganese by catalytic oxidation.

is processed from what is commonly known as New Jersey greensand but more correctly identified as glauconite, an iron, potassium, alumino-silicate material of marine origin. Glauconite occurs along the eastern coast of the United States it was deposited approximately 75- 80 million years ago during the geologic time known as the Cretaceous period. Greensand has been used since the 1920s originally as a natural zeolite for water softening due to its relatively high ion exchange capacity of approximately 3,000 grains/cu. ft. Until the development of synthetic gel- type ion exchange resins following World War II, which had a capacity of about six to seven times that of glauconite, the greensand zeolites were an efficient and reliable part of the softening industry.

For iron and manganese removal the naturally occurring singular nodular grains of glauconite are washed and classified to produce a filtration media having a sieve analysis of 18 x 60 mesh with a resulting effective size of 0.3-0.35 mm and a uniformity coefficient of 1.60 or less, giving the media excellent filtration characteristics. The glauconite is stabilized, then coated with manganese oxide in various valence states. It is this coating that provides the glauconite with its special chemical oxidation-reduction properties for the removal of iron and manganese as well as small quantities of hydrogen sulfide.

The advantages of the manganese greensand process over aeration and filtration are single pumping (as the process generally employs pressure filtration), reliability, flexibility, and a high quality effluent coupled with ease of operation. Both the CR and IR processes are relatively uncomplicated in both their design and operation and result in an efficient, reliable method for iron and manganese removal.

The mechanism for iron and manganese removal by manganese greensand in the CR method is oxidation followed by physical removal of the resulting precipitates by filtration using a manganese greensand or manganese greensand-anthracite bed. In the IR method, the manganese is removed by contact oxidation. Generally, the CR method is used iron predominates with only small amounts of manganese, while the IR or catalytic oxidation process is used for water manganese removal, with or without the presence of iron, is d.

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