There are two types of water purification devices: reverse osmosis and filtration. Reverse osmosis filters out harmful substances while filtering out impurities such as bacteria, viruses, protozoa and other microorganisms. Filters can be made from natural materials or synthetic materials. Natural filters include rocks, plants, sand, gravel and even animal dung.
Synthetic filters include glass bottles with membranes and metal containers with stainless steel screens.
Filtering systems are usually used to remove certain contaminants. Some filters have a built-in filter cartridge which can be filled with water before use. Other filters require the user to fill up a separate container with purified water after each use. Both methods result in different results depending upon the type of contaminant being removed and how much time is spent filtering it out.
The most common type of water purification device is the one that uses a filter cartridge. These cartridges contain chemicals designed to kill microorganisms and other unwanted organisms in drinking water. They come in various sizes and types, but they all work similarly. When activated, these chemicals break down organic matter into harmless compounds like carbon dioxide and hydrogen ions (H+).
The chemical reaction releases oxygen into the air, allowing it to be breathed or absorbed through your skin.
Another common type of water purification is using a filtering device. These work by forcing water through a filter medium, usually made from activated charcoal. This medium has tiny pores which trap certain impurities and hold them in the filter. Charcoal can also absorb foul smells and tastes from the water, making it more palatable to drink.
Filtration devices can be anything from commercial water bottles to jugs with built-in filters to large carboys and barrels with specialized filters inside of them.
Before you can use any of these purification devices, you need to know which kind of water you are going to treat and what kind of water purifier is best for your situation. If you are in a large group with several people, it might be best to use a large filtering device or a jug with built-in filters. Jugs like these can easily supply several people with fresh drinking water all at the same time. However, if you are traveling alone or as a pair, then a jug may be a bit of overkill.
In this case, it might be best to bring a water bottle with a built-in filter in it. These devices are very simple to use and do not require the work of pumping or shaking the water to get the contaminants out. You simply squeeze the bottle to force the water out of the filter, allowing you to drink safely.
Sources & references used in this article:
Water purifier apparatus by TE Corder – US Patent 4,172,796, 1979 – Google Patents
Gravity water purifier by JH Magnusson – US Patent 5,562,824, 1996 – Google Patents
Ozone/ultraviolet water purifier by AJ Last – US Patent 4,141,830, 1979 – Google Patents
An adsorption water purifier with in situ photocatalytic regeneration by RW Matthews – Journal of Catalysis, 1988 – Elsevier
Water purifier by TE Corder – US Patent 4,107,046, 1978 – Google Patents