About 11 percent of the world’s population — 783 million people — still doesn’t have access to potable water, according to a 2012 United Nations study . As with so many of these statistics it is easy to believe that the people affected are in third world countries that lack the benefits of modern technology. The reality is that many areas in developed countries lack safe drinking water. The very industry which improved citizens’ standard of living, damaged the environment and now threatens the health and safety of its drinking water. A recent report stated that forty of the fifty states failed to provide safe drinking water, and estimates are that 110 million Americans cannot depend on the safety of their drinking water. While cities such as Flint, Michigan, and Newark, New Jersey make headlines, communities across the nation are not assured that their water is safe to drink.
As new contaminants are discovered in drinking water, technologies have advanced to respond. The most basic of these are various forms of filtration that range from draining the water through substances such as sand that remove contaminants that attach to the material and allow the water to pass through. This process is enhanced with the addition of chemicals to bind the contaminants so that they form clots which can then be removed. Another operation allows gravity to pull the heavier contaminants from the water and sink to the bottom of a tank where they can be removed. Bag and cartridge filtration systems can be used to physically strain water and capture microbes and sediment. As testing is able to identify more precisely the dangerous elements, processes are developed to remove them. The combination of physical and chemical processing is complex and requires expert design and operation.
For water contaminated with larger particles, diatomaceous earth filtration is used as a strainer to capture particles in the filters. This method is also effective at removing some bacteria and viruses. It works by forcing water through a filtration system with pressure or vacuum so that the material remains in the filter, and cleaner water is produced. It is not effective in removing inorganic contaminants and is applicable to situations where the initial water to be processed is relatively high quality. Simpler versions of this use beds of sand to filter and clean water through slow acting processes.
Recently, the limitations of these technologies have become apparent as their failure to identify and remove hazardous chemicals has become evident. This has spurred newer, higher tech solutions. These technologies approach the purification of water by ways other than physical or chemical processing. Technologies such as membrane filtration, ion exchange, UV irradiation, and biological filtration have become part of the design for industrial and community wastewater treatment. The challenge of pure water at an affordable cost requires the expertise of companies applying the most current research supported technologies to the unique problems of each situation.
Companies such as CJI Processing , bring a full ra nge of water treatment system design, and installation.
- Media filtration
- Ion exchange systems
- Clarification systems
- Pump stations
- Disinfection systems
- Oil/water separation systems
- Electrolytic systems
- Reverse osmosis systems