Early on in its existence, no one had to think about treating America’s wastewater. Left to nature’s care, the purification process occurred slowly but surely. However, now that the population has grown so quickly and more contaminants are ending up in the water supply, measures need to be taken in order to speed up nature’s cleaning process. The Clean Water Act of 1972 was enacted to provide a basis for maintaining the country’s most valuable resource, clean water. Municipal water treatment has become a part of our daily lives.
Up until the mid 1900s, the nation’s waterways in highly-populated parts of the country were overflowing with pollutants, but no one was really concerned about it. In today’s world, however, we not only understand that clean drinking water is a valuable commodity but also that clean water is critical in maintaining the ecosystems of our world and vital in safeguarding national health. Cities, then, have had to become responsible for taking the steps necessary to disinfect the wastewater generated in their community and eradicating unhealthy pollutants. Municipal water treatment plants were constructed to take care of the process of filtering the water and making it clean enough for drinking again.
An assortment of types of filtration have been used with varying amounts of success. In the year 1892, there were only 27 American cities that provided wastewater treatment for their citizens. Now we have an estimated 16,000 water treatment facilities operating all over the country. Municipal water treatment systems start when wastewater enters the treatment plant where it is filtered through screens of varying densities. Some screens with holes about ?” square filter out large contaminants from the water, while screens with smaller mesh remove even extremely little particles.
Ion-exchange resins are often a part of the water purification process. These are made up of insoluble beads with a surface covered with highly-structured pores where ions are easily trapped and released. Ion-exchange resins are incorporated successfully to take the poisons and heavy metals from water. Sometimes the resins are mixed with an activated-charcoal filter which has the capabilities to remove organic contaminants from water.
The filtration modes used by municipal water treatment plants are complicated. After all, wastewater can be overflowing with microorganisms or pathogens that trigger human diseases. Therefore, the means used to decontaminate the water are all important in the lives of all mankind.
In America, there have been different types of filtration with varying degrees of success stretching back tp 1892. Today, we have high-tech Municipal water treatment systems that let us be free from parasites and other toxic organisms that could pose a threat to our health and well being.