Land-based methods of wastewater treatment have been in use for many years. There are several types of treatment methods.
In this article, I provide a brief overview of the different types of these land-based treatment methods and how they work. For more information about wastewater treatment visit https://byjas.com.au/wastewater-equipment-manufacturers/.
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Different types of land-based methods of wastewater treatment can be identified based on either the rate of infiltration of wastewater through the soil or how it is applied to the land:
- Overland Flow Method – Sloping land grown with grass is used in this method of land treatment of wastewater. Wastewater is sprayed through a sprinkler or pipe at the top of this slope. The wastewater then flows into the collection pipe in a thin film on the grass located below the slope and at the end of the slope.
- Subsurface infiltration method – This method employs soil absorption area or drain fields lying below the surface layer of soil. As the wastewater is released into this drain area, it is acted upon by the soil matrix. The treated wastewater then reaches the water table.
- Slow Rate Method – Wastewater is applied to the land surface with vegetation at a slow rate. The slow rate of application prevents wastewater runoff. The waste that is planted on this land is treated by plants and microorganisms.