Wastewater, popularly known as sewage water, carries all sorts of physical and chemical health threatening materials. Many people tend to think that sewage water has nothing to do with the life of human beings since it is in the sewage, away from the houses. No matter how clean a house is if it has a dirty environment, there will always be an outbreak of diseases. Wastewater treatment systems, therefore, play the critical role of ensuring that wastewater is safe. Wastewater contains different kinds of contaminants depending on the area it has been generated. This calls for efficient treatment systems that would make the water safe regardless of where it has been generated from.
Types of Contaminants Found in the Sewage Waters
Sewage water carries all sorts of contaminants. Funny enough, some of these contaminants are very crucial to the agricultural sector, but they need to be separated from the harmful ones. The phosphates are part of the contaminants contained in sewage water. However, they increase the rate of growth of algae in the water which is very poisonous. The sewage water treatment system removes all phosphates and nitrates from the water, making the poisonous algae die and the water safe.
Wastewater treatment systems decontaminate the water completely by removing all the pathogenic micro-organisms that are contained in water. The organisms are the ones responsible for water-borne diseases like cholera and typhoid flies. Mostly, they are bacteria that dwell in the water and multiply at an alarming rate. Wastewater treatment systems have gone an extra mile to ensure that all the bacteria and viruses contained in the sewage water are efficiently removed, making the water safe in the environment. Water in the sewage carries all sorts of vectors that carry diseases to the households; it is, therefore, good to ensure that it is purely decontaminated.
Physical floating objects are other dangerous materials that float on the sewage. Wastewater treatment removes all these things to avoid blockage of the sewage and rivers. They can be made to settle down or removed completely. Through mechanical treatment, they are completely removed making work easier for the microscopic treatment.
The waste water is harmful to people’s health. You should assume that it is harmful until tested for purity. Most diseases occur due to coming into contact with dirty and contaminated water. It should, therefore, be taken seriously and efficient measures must be initiated.
Types of Treatment
Before going further, the physical objects need to be removed from the water first. This is called mechanical treatment and it is meant to evacuate both floating and sinking objects, making the water physically pure. From there, there is the secondary treatment, where there is the removing of dissolved organic substances. This is achieved by putting organic matter consuming organisms. It is then followed by sedimentation tanks where all the materials are made to settle down for easy removal. Tertiary treatment then follows. It involves the addition of chemicals to completely get rid of the stubborn organisms. It is popularly known as the disinfection stage where chlorine performs its magic to make the water clean.
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