What are the Three Stages of Wastewater Treatment?


In wastewater treatment, the removal of biodegradable wastes, couple with contaminants and solid wastes, is of paramount importance. Removing them with the help of primary treatment may not be possible. In such cases, the secondary treatment of wastewater serves as a viable option.

Living microbes play a primary role in the removal of organic matter in the treatment process. Wastewater plants provide the right environment for the multiplication of microbes. Such plants produce organic impurities that the microbes absorb to thrive. At the end of the treatment, wastewater plants release energy, water, and carbon dioxide.

Wastewater carries many potential disease-causing microbes. The biological process serves as a reliable treatment procedure to make it fit for drinking.

One of the primary advantages of using microbes for the treatment of wastewater is that they can survive in distinct conditions. These include both aerobic and anaerobic conditions. They may be administered together or individually, depending on the needs for the treatment of wastewater.


Aerobic wastewater treatment takes place in the presence of oxygen. In its availability, microbes remove suspended solids and organic wastes from wastewater. The availability of oxygen in the right amount is of paramount importance for successfully conducting this process.

Apart from oxygen, the right pH balance and optimum temperature are also necessary for this process. The byproducts released after the successful completion of anaerobic wastewater treatment procedure include water and carbon dioxide.


In the anaerobic process of treating wastewater, microbes act to separate contaminants from it without oxygen. The byproducts released as a result of this process include methane, carbon dioxide and other products.

The anaerobic method of purifying wastewater leads to the production of biogas. It is a clean fuel and helps in the conservation of the environment.

The outcomes of this procedure depend on the supply and retention of heat. It is vital for methanogenesis, acetogenesis, acidogenesis, and hydrolysis.

The anaerobic process can be one of the three types: activated sludge, tricking filter, and oxidation pond.

Activated Sludge

When introduced to oxygenated conditions, microbes take the form of activated sludge which are biological solids. In this procedure, some microbes soak the soluble organic matter to reduce its concentration in the wastewater. The supply of the right amount of oxygen makes it possible to separate and release pure water.

Tricking Filter

Tricking filter is a biological treatment system that involves the use of gravels, rocks, and stones. In this procedure, wastewater flows to the bottom of the stone to facilitate the multiplication of microbes.

Upon reaching the right numbers, microbes absorb the contaminants and form a layer of biomass in the presence of air to lower BOD.

Oxidation Pond

Oxygen pond is a shallow basin in a large area. It helps treat wastewater in the presence of sunlight with the help of algae and microbes. The role of algae is to release oxygen through photosynthesis. On the other hand, microbes use the released oxygen for the purification of wastewater.

Cleanmaxx – the best secondary wastewater treatment solution

Adaptable microbes are imperative for the secondary treatment of wastewater. Due to the rising demand for industrialisation, it can be hard to find such microbes to purify wastewater. Organic Biotech’s Cleanmaxx can help you meet this requirement with ease. It is based on a natural and eco-friendly formulation to help you undertake the secondary treatment of wastewater in the best possible manner.


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