Bondurant Technologies International, Inc. makes the first and only portable all-membrane, nanofiltration-based filtration unit — the CamelTrain™.
Utilizing nanofiltration-based technology, the CamelTrain™ essentially erects a physical barrier of microscopic pores that filter water down to .0002 nanometers. This results in a near pure drinking water that is effectively free of microbials, chemical pollution, heavy metals (including lead and chromium-6), and even radionuclides.
The CamelTrain™ includes membranes that have an organic and inorganic matter rejection rate comparable to reverse osmosis (RO). Considered “loose” RO, nanofiltration will not only produce more purified water, it has less expensive parts, is smaller, and pulls lower electricity than RO.
Additionally, the CamelTrain™’s use of nanofiltration is ideal for water softening, because it removes calcium and magnesium from hard water. While also allowing passage of monovalent ions such as sodium and chloride, it removes ions that are divalent such as calcium, magnesium, and sulfate.
Our technology differs dramatically from traditional portable methods of water purification such as activated charcoal (which absorbs contaminants when they pass over its surface) or UV light (which projects disinfecting rays through passing water, but does not kill or stop harmful biologicals from reproducing). The latter method does not prevent a “living organism” from passing into our bodies, even if it cannot reproduce.
While these methods have been used with varying degrees of effectiveness for decades, they become less effective when the water is cloudier and/or faster moving. They simply lack the sheer stopping power of a physical barrier like nanofiltration.
Technical Specs, Camel Series II
Fouling is a major problem encountered in the membrane process. Fouling (or caking) is sometimes caused by the deposition of suspended or dissolved solids in the feed on the external membrane surface or on/within the membrane pores. Membrane fouling leads to a significant increase in hydraulic resistance and a decrease in permeate flow, and is considered reversible or irreversible based on the attachment strength of particles to the membrane surface.
Membrane fouling includes inorganic fouling/scaling, organic fouling, particulate/colloidal fouling, and microbial/biological fouling. In terms of technology and economics, it is a major factor in determining the practical application of membranes in water treatment.
Traditional methods of cleaning membranes include acidic and alkaline chemicals, which in effect “burn” away the buildup. The use of such chemicals causes the membranes to become less and less effective over time, leaving behind a poisonous soup that is detrimental to the environment.
We use a back-flush and an organic solution that permeates the polysaccharide structure through gas transfer, causing the biological formation holding the organic and inorganic matter to simply fall apart, so that it can then be “flushed” away. This also includes the biofilm that allows bacteria to stick to the membranes, hoses, and connections.