Van de Waarde said other bacterial filters also are under development.
2.
Phreatophyte plants help to purify these waters and their roots fix heavy metals with a bacterial filter.
3.
The Berkefeld is a cheap, portable and efficient bacterial filter in general, though it does not remove viruses like Hepatitis A and some bacteria such as mycoplasma.
4.
But scientists are hopeful bacterial filters will be able to last for months or even years, since they actually thrive by converting the pollution to harmless byproducts.
5.
Aquaria using conventional water purification methods ( e . g . bacterial filters ) generally have nutrient levels in parts per million, while algal scrubbers have maintained parts per billion concentrations [ much lower ], despite heavy biological loading in the Reef Tank.
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