With the daily ever growing urbanization, you will agree with me that the impact on the environment is very adverse due to sewage disposal. Sewage can be from the households or the industries in towns. You will not be comfortable to observe dirty water released into you area of locality if it has not been properly treated or purified. Those that contains pollutants needs to be treated so that its quality can be improved. This means that its negative impact on the environment is so much reduced. By so doing we will be promoting biodiversity and preventing health hazards. To be precise, we ought to have a waste water purification system that is very efficient.
There are several steps in the process of treating those that is already contaminated. This is so that the contaminants are removed. Physical, biological and chemical approaches are utilized in all these steps.
The beginning stage is pretreatment. This is actually before the actually treatment process begins. The liquid is prepared for purification by getting rid of the pollutants that can be collected in this step through sieving. Barriers and mesh that traps these big objects along the path of the fluid are used. The objects are then destroyed through exposure to very high temperatures in the incinerator. Sand, marbles or even mirrors can be collected. The system can be put at risk of failing if these objects are not removed at this earlier stage. This is because they will cause blocking of pipes.
The next one is called primary treatment. Here, it involves sedimentation and floatation. I mean, the light objects float and are collected and those that are heavy, settle at the bottom. This usually happens in the primary sedimentation tanks. Primary clarifiers can also be used. The grease and oil harvested is used to make soap.
Besides, is the secondary treatment stage. Majorly, those contaminants that are cleared in this stage are those from living organisms such as fecal matter. Most of them are already dissolved but only a few can be in suspended. Living organisms are reared in water and are made to eat up the matter thus promoting decomposition. It saves on space.
Tertiary stage of treatment aims at improving the quality of the outcome. The liquid is made to be clean. This is through microfiltration depending on the system type. Before the effluent is let into the locality, harmful gases are removed. Toxins are not left to remain in water at this stage.
In the final part of this step, this liquid is taken into ponds and dams. Here, the biological agents assist in removing the remaining pollutant matter. Then this water can be used for irrigation purposes. Recharging the ground water sources can be another use.
Lastly, is the fourth treatment stage. It is under trials and has already been incorporated in the systems of some purification plants. It involves removal of chemicals that decompose very slowly thus stays for very long time in the polluted water. This part should include the control of odor into the environment.
There are several steps in the process of treating those that is already contaminated. This is so that the contaminants are removed. Physical, biological and chemical approaches are utilized in all these steps.
The beginning stage is pretreatment. This is actually before the actually treatment process begins. The liquid is prepared for purification by getting rid of the pollutants that can be collected in this step through sieving. Barriers and mesh that traps these big objects along the path of the fluid are used. The objects are then destroyed through exposure to very high temperatures in the incinerator. Sand, marbles or even mirrors can be collected. The system can be put at risk of failing if these objects are not removed at this earlier stage. This is because they will cause blocking of pipes.
The next one is called primary treatment. Here, it involves sedimentation and floatation. I mean, the light objects float and are collected and those that are heavy, settle at the bottom. This usually happens in the primary sedimentation tanks. Primary clarifiers can also be used. The grease and oil harvested is used to make soap.
Besides, is the secondary treatment stage. Majorly, those contaminants that are cleared in this stage are those from living organisms such as fecal matter. Most of them are already dissolved but only a few can be in suspended. Living organisms are reared in water and are made to eat up the matter thus promoting decomposition. It saves on space.
Tertiary stage of treatment aims at improving the quality of the outcome. The liquid is made to be clean. This is through microfiltration depending on the system type. Before the effluent is let into the locality, harmful gases are removed. Toxins are not left to remain in water at this stage.
In the final part of this step, this liquid is taken into ponds and dams. Here, the biological agents assist in removing the remaining pollutant matter. Then this water can be used for irrigation purposes. Recharging the ground water sources can be another use.
Lastly, is the fourth treatment stage. It is under trials and has already been incorporated in the systems of some purification plants. It involves removal of chemicals that decompose very slowly thus stays for very long time in the polluted water. This part should include the control of odor into the environment.
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