Wastewater Treatment

Wastewater Treatment and Sewage and Waste Water Disposal Systems in East Africa

Every day, water is wasted in humongous quantities by households. Commercial and industrial spaces across the globe in the form of toilet flushes, washing clothes, dishes, and much more. Have you ever wondered what happens to all this water? Where does it go? How does it get disposed of into the nearby water bodies?

We are already aware of the fact that the world is entering a water crisis. In many parts of the globe, including some parts of Africa, access to clean drinking water is getting harder. In this condition, we have coupled modern-day technology with basic level science to create wastewater treatment plants.

General International is a leading company, dealing with equipment and parts used in sewage and waste water disposal systems in East Africa. We have earned a prominent name in being one of the top-rated suppliers and service providers in all of Africa. Keeping the current water crisis in mind, we deal with waste and sewage water management systems and water treatment. We understand and prioritize the environmental crisis. Hence, we have built high-quality products and services that have earned massive trust among the residents of Africa.

Let us look into how a water treatment plant works!

How Sewage and Waste Water Disposal System Works

A water treatment plant follows a tested procedure to convert sewage water into clean water. Looking at all the components that form a sewage treatment plant, we see:

  • Screening

The screening marks the initial process of wastewater treatment. When the water enters the treatment plant, it contains lots of macroparticles like wood, rocks, discarded plastics or kitchenware, and even the dead bodies of some animals or birds. If these materials were to enter the treatment plant, the procedure might get disrupted. That is why the wastewater goes through the initial stage of "screening" wherein such macroparticles are screened for and removed.

  • Pumping

Pumping is the second stage of wastewater treatment. Sewage and waste water disposal systems are carried from all buildings through a connected sewer system into the treatment plant. Most of these sewer plants are located at a lower level, very close to the natural water resources. It enables the clean water from the treatment plant to be directly released into the river. If the plant is at a higher altitude, a pumping system pumps up the wastewater into the plant.

  • Aerating

Aerating is another crucial step of water treatment. In this step, the sewage water is centrifuged and exposed to the air. Due to this, some gases like hydrogen sulfide get released from the water. After the aeration process, the entire thing is transferred to a tank where they are separated into two divisions.

In the first division, air will be passed through the water to make it properly aerated. Replenishment of oxygen into the water helps to keep the heavier dirt particles suspended. These suspended particles are known as 'grit'. The grit is then slowly and carefully thrown out of the tank.

  • Removing sludge and scum

After the debris gets removed, the wastewater moves to the second chamber. Here, the organic part of the waste also known as the "sludge" is removed by pumping it out of the tank.

The next step involves removing the lighter immiscible substances present in the wastewater like grease, oil, foam, or soap. These materials are known as "scum." Once the sludge and scum are eliminated, the water is sent to the digesters to get processed and repurposed!

  • Killing Bacteria

Eventually, the wastewater is free from debris, and other particles go to a "chlorine contact chamber." In this region, the water is treated with chlorine to eliminate any harmful bacteria or other microorganisms present in the water. Once the procedure completes, the chlorine gets neutralized by adding chemicals so that the marine life remains unharmed.

Finally, the chemically treated, clean water known as "effluent" is released into nature.